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// SPDX-License-Identifier: MIT
pragma solidity ^0.6.2;

import "../strategy-uni-farm-base.sol";

contract StrategyUniEthUsdtLpV4 is StrategyUniFarmBase {
    // Token addresses
    address public uni_rewards = 0x6C3e4cb2E96B01F4b866965A91ed4437839A121a;
    address public uni_eth_usdt_lp = 0x0d4a11d5EEaaC28EC3F61d100daF4d40471f1852;
    address public usdt = 0xdAC17F958D2ee523a2206206994597C13D831ec7;

    constructor(
        address _governance,
        address _strategist,
        address _controller,
        address _timelock
    )
        public
        StrategyUniFarmBase(
            usdt,
            uni_rewards,
            uni_eth_usdt_lp,
            _governance,
            _strategist,
            _controller,
            _timelock
        )
    {}

    // **** Views ****

    function getName() external override pure returns (string memory) {
        return "StrategyUniEthUsdtLpV4";
    }
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.6.7;

import "./lib/erc20.sol";

import "./interfaces/uniswapv2.sol";

contract PickleSwap {
    using SafeERC20 for IERC20;

    UniswapRouterV2 router = UniswapRouterV2(
        0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D
    );

    address public constant weth = 0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2;

    function convertWETHPair(
        address fromLP,
        address toLP,
        uint256 value
    ) public {
        IUniswapV2Pair fromPair = IUniswapV2Pair(fromLP);
        IUniswapV2Pair toPair = IUniswapV2Pair(toLP);

        // Only for WETH/<TOKEN> pairs
        if (!(fromPair.token0() == weth || fromPair.token1() == weth)) {
            revert("!eth-from");
        }
        if (!(toPair.token0() == weth || toPair.token1() == weth)) {
            revert("!eth-to");
        }

        // Get non-eth token from pairs
        address _from = fromPair.token0() != weth
            ? fromPair.token0()
            : fromPair.token1();

        address _to = toPair.token0() != weth
            ? toPair.token0()
            : toPair.token1();

        // Transfer
        IERC20(fromLP).safeTransferFrom(msg.sender, address(this), value);

        // Remove liquidity
        IERC20(fromLP).safeApprove(address(router), 0);
        IERC20(fromLP).safeApprove(address(router), value);
        router.removeLiquidity(
            fromPair.token0(),
            fromPair.token1(),
            value,
            0,
            0,
            address(this),
            now + 60
        );

        // Convert to target token
        address[] memory path = new address[](3);
        path[0] = _from;
        path[1] = weth;
        path[2] = _to;

        IERC20(_from).safeApprove(address(router), 0);
        IERC20(_from).safeApprove(address(router), uint256(-1));
        router.swapExactTokensForTokens(
            IERC20(_from).balanceOf(address(this)),
            0,
            path,
            address(this),
            now + 60
        );

        // Supply liquidity
        IERC20(weth).safeApprove(address(router), 0);
        IERC20(weth).safeApprove(address(router), uint256(-1));

        IERC20(_to).safeApprove(address(router), 0);
        IERC20(_to).safeApprove(address(router), uint256(-1));
        router.addLiquidity(
            weth,
            _to,
            IERC20(weth).balanceOf(address(this)),
            IERC20(_to).balanceOf(address(this)),
            0,
            0,
            msg.sender,
            now + 60
        );

        // Refund sender any remaining tokens
        IERC20(weth).safeTransfer(
            msg.sender,
            IERC20(weth).balanceOf(address(this))
        );
        IERC20(_to).safeTransfer(msg.sender, IERC20(_to).balanceOf(address(this)));
    }
}

pragma solidity ^0.6.0;

import "./careful-math.sol";

/**
 * @title Exponential module for storing fixed-precision decimals
 * @author Compound
 * @notice Exp is a struct which stores decimals with a fixed precision of 18 decimal places.
 *         Thus, if we wanted to store the 5.1, mantissa would store 5.1e18. That is:
 *         `Exp({mantissa: 5100000000000000000})`.
 */
contract Exponential is CarefulMath {
    uint constant expScale = 1e18;
    uint constant doubleScale = 1e36;
    uint constant halfExpScale = expScale/2;
    uint constant mantissaOne = expScale;

    struct Exp {
        uint mantissa;
    }

    struct Double {
        uint mantissa;
    }

    /**
     * @dev Creates an exponential from numerator and denominator values.
     *      Note: Returns an error if (`num` * 10e18) > MAX_INT,
     *            or if `denom` is zero.
     */
    function getExp(uint num, uint denom) pure internal returns (MathError, Exp memory) {
        (MathError err0, uint scaledNumerator) = mulUInt(num, expScale);
        if (err0 != MathError.NO_ERROR) {
            return (err0, Exp({mantissa: 0}));
        }

        (MathError err1, uint rational) = divUInt(scaledNumerator, denom);
        if (err1 != MathError.NO_ERROR) {
            return (err1, Exp({mantissa: 0}));
        }

        return (MathError.NO_ERROR, Exp({mantissa: rational}));
    }

    /**
     * @dev Adds two exponentials, returning a new exponential.
     */
    function addExp(Exp memory a, Exp memory b) pure internal returns (MathError, Exp memory) {
        (MathError error, uint result) = addUInt(a.mantissa, b.mantissa);

        return (error, Exp({mantissa: result}));
    }

    /**
     * @dev Subtracts two exponentials, returning a new exponential.
     */
    function subExp(Exp memory a, Exp memory b) pure internal returns (MathError, Exp memory) {
        (MathError error, uint result) = subUInt(a.mantissa, b.mantissa);

        return (error, Exp({mantissa: result}));
    }

    /**
     * @dev Multiply an Exp by a scalar, returning a new Exp.
     */
    function mulScalar(Exp memory a, uint scalar) pure internal returns (MathError, Exp memory) {
        (MathError err0, uint scaledMantissa) = mulUInt(a.mantissa, scalar);
        if (err0 != MathError.NO_ERROR) {
            return (err0, Exp({mantissa: 0}));
        }

        return (MathError.NO_ERROR, Exp({mantissa: scaledMantissa}));
    }

    /**
     * @dev Multiply an Exp by a scalar, then truncate to return an unsigned integer.
     */
    function mulScalarTruncate(Exp memory a, uint scalar) pure internal returns (MathError, uint) {
        (MathError err, Exp memory product) = mulScalar(a, scalar);
        if (err != MathError.NO_ERROR) {
            return (err, 0);
        }

        return (MathError.NO_ERROR, truncate(product));
    }

    /**
     * @dev Multiply an Exp by a scalar, truncate, then add an to an unsigned integer, returning an unsigned integer.
     */
    function mulScalarTruncateAddUInt(Exp memory a, uint scalar, uint addend) pure internal returns (MathError, uint) {
        (MathError err, Exp memory product) = mulScalar(a, scalar);
        if (err != MathError.NO_ERROR) {
            return (err, 0);
        }

        return addUInt(truncate(product), addend);
    }

    /**
     * @dev Divide an Exp by a scalar, returning a new Exp.
     */
    function divScalar(Exp memory a, uint scalar) pure internal returns (MathError, Exp memory) {
        (MathError err0, uint descaledMantissa) = divUInt(a.mantissa, scalar);
        if (err0 != MathError.NO_ERROR) {
            return (err0, Exp({mantissa: 0}));
        }

        return (MathError.NO_ERROR, Exp({mantissa: descaledMantissa}));
    }

    /**
     * @dev Divide a scalar by an Exp, returning a new Exp.
     */
    function divScalarByExp(uint scalar, Exp memory divisor) pure internal returns (MathError, Exp memory) {
        /*
          We are doing this as:
          getExp(mulUInt(expScale, scalar), divisor.mantissa)
          How it works:
          Exp = a / b;
          Scalar = s;
          `s / (a / b)` = `b * s / a` and since for an Exp `a = mantissa, b = expScale`
        */
        (MathError err0, uint numerator) = mulUInt(expScale, scalar);
        if (err0 != MathError.NO_ERROR) {
            return (err0, Exp({mantissa: 0}));
        }
        return getExp(numerator, divisor.mantissa);
    }

    /**
     * @dev Divide a scalar by an Exp, then truncate to return an unsigned integer.
     */
    function divScalarByExpTruncate(uint scalar, Exp memory divisor) pure internal returns (MathError, uint) {
        (MathError err, Exp memory fraction) = divScalarByExp(scalar, divisor);
        if (err != MathError.NO_ERROR) {
            return (err, 0);
        }

        return (MathError.NO_ERROR, truncate(fraction));
    }

    /**
     * @dev Multiplies two exponentials, returning a new exponential.
     */
    function mulExp(Exp memory a, Exp memory b) pure internal returns (MathError, Exp memory) {

        (MathError err0, uint doubleScaledProduct) = mulUInt(a.mantissa, b.mantissa);
        if (err0 != MathError.NO_ERROR) {
            return (err0, Exp({mantissa: 0}));
        }

        // We add half the scale before dividing so that we get rounding instead of truncation.
        //  See "Listing 6" and text above it at https://accu.org/index.php/journals/1717
        // Without this change, a result like 6.6...e-19 will be truncated to 0 instead of being rounded to 1e-18.
        (MathError err1, uint doubleScaledProductWithHalfScale) = addUInt(halfExpScale, doubleScaledProduct);
        if (err1 != MathError.NO_ERROR) {
            return (err1, Exp({mantissa: 0}));
        }

        (MathError err2, uint product) = divUInt(doubleScaledProductWithHalfScale, expScale);
        // The only error `div` can return is MathError.DIVISION_BY_ZERO but we control `expScale` and it is not zero.
        assert(err2 == MathError.NO_ERROR);

        return (MathError.NO_ERROR, Exp({mantissa: product}));
    }

    /**
     * @dev Multiplies two exponentials given their mantissas, returning a new exponential.
     */
    function mulExp(uint a, uint b) pure internal returns (MathError, Exp memory) {
        return mulExp(Exp({mantissa: a}), Exp({mantissa: b}));
    }

    /**
     * @dev Multiplies three exponentials, returning a new exponential.
     */
    function mulExp3(Exp memory a, Exp memory b, Exp memory c) pure internal returns (MathError, Exp memory) {
        (MathError err, Exp memory ab) = mulExp(a, b);
        if (err != MathError.NO_ERROR) {
            return (err, ab);
        }
        return mulExp(ab, c);
    }

    /**
     * @dev Divides two exponentials, returning a new exponential.
     *     (a/scale) / (b/scale) = (a/scale) * (scale/b) = a/b,
     *  which we can scale as an Exp by calling getExp(a.mantissa, b.mantissa)
     */
    function divExp(Exp memory a, Exp memory b) pure internal returns (MathError, Exp memory) {
        return getExp(a.mantissa, b.mantissa);
    }

    /**
     * @dev Truncates the given exp to a whole number value.
     *      For example, truncate(Exp{mantissa: 15 * expScale}) = 15
     */
    function truncate(Exp memory exp) pure internal returns (uint) {
        // Note: We are not using careful math here as we're performing a division that cannot fail
        return exp.mantissa / expScale;
    }

    /**
     * @dev Checks if first Exp is less than second Exp.
     */
    function lessThanExp(Exp memory left, Exp memory right) pure internal returns (bool) {
        return left.mantissa < right.mantissa;
    }

    /**
     * @dev Checks if left Exp <= right Exp.
     */
    function lessThanOrEqualExp(Exp memory left, Exp memory right) pure internal returns (bool) {
        return left.mantissa <= right.mantissa;
    }

    /**
     * @dev Checks if left Exp > right Exp.
     */
    function greaterThanExp(Exp memory left, Exp memory right) pure internal returns (bool) {
        return left.mantissa > right.mantissa;
    }

    /**
     * @dev returns true if Exp is exactly zero
     */
    function isZeroExp(Exp memory value) pure internal returns (bool) {
        return value.mantissa == 0;
    }

    function safe224(uint n, string memory errorMessage) pure internal returns (uint224) {
        require(n < 2**224, errorMessage);
        return uint224(n);
    }

    function safe32(uint n, string memory errorMessage) pure internal returns (uint32) {
        require(n < 2**32, errorMessage);
        return uint32(n);
    }

    function add_(Exp memory a, Exp memory b) pure internal returns (Exp memory) {
        return Exp({mantissa: add_(a.mantissa, b.mantissa)});
    }

    function add_(Double memory a, Double memory b) pure internal returns (Double memory) {
        return Double({mantissa: add_(a.mantissa, b.mantissa)});
    }

    function add_(uint a, uint b) pure internal returns (uint) {
        return add_(a, b, "addition overflow");
    }

    function add_(uint a, uint b, string memory errorMessage) pure internal returns (uint) {
        uint c = a + b;
        require(c >= a, errorMessage);
        return c;
    }

    function sub_(Exp memory a, Exp memory b) pure internal returns (Exp memory) {
        return Exp({mantissa: sub_(a.mantissa, b.mantissa)});
    }

    function sub_(Double memory a, Double memory b) pure internal returns (Double memory) {
        return Double({mantissa: sub_(a.mantissa, b.mantissa)});
    }

    function sub_(uint a, uint b) pure internal returns (uint) {
        return sub_(a, b, "subtraction underflow");
    }

    function sub_(uint a, uint b, string memory errorMessage) pure internal returns (uint) {
        require(b <= a, errorMessage);
        return a - b;
    }

    function mul_(Exp memory a, Exp memory b) pure internal returns (Exp memory) {
        return Exp({mantissa: mul_(a.mantissa, b.mantissa) / expScale});
    }

    function mul_(Exp memory a, uint b) pure internal returns (Exp memory) {
        return Exp({mantissa: mul_(a.mantissa, b)});
    }

    function mul_(uint a, Exp memory b) pure internal returns (uint) {
        return mul_(a, b.mantissa) / expScale;
    }

    function mul_(Double memory a, Double memory b) pure internal returns (Double memory) {
        return Double({mantissa: mul_(a.mantissa, b.mantissa) / doubleScale});
    }

    function mul_(Double memory a, uint b) pure internal returns (Double memory) {
        return Double({mantissa: mul_(a.mantissa, b)});
    }

    function mul_(uint a, Double memory b) pure internal returns (uint) {
        return mul_(a, b.mantissa) / doubleScale;
    }

    function mul_(uint a, uint b) pure internal returns (uint) {
        return mul_(a, b, "multiplication overflow");
    }

    function mul_(uint a, uint b, string memory errorMessage) pure internal returns (uint) {
        if (a == 0 || b == 0) {
            return 0;
        }
        uint c = a * b;
        require(c / a == b, errorMessage);
        return c;
    }

    function div_(Exp memory a, Exp memory b) pure internal returns (Exp memory) {
        return Exp({mantissa: div_(mul_(a.mantissa, expScale), b.mantissa)});
    }

    function div_(Exp memory a, uint b) pure internal returns (Exp memory) {
        return Exp({mantissa: div_(a.mantissa, b)});
    }

    function div_(uint a, Exp memory b) pure internal returns (uint) {
        return div_(mul_(a, expScale), b.mantissa);
    }

    function div_(Double memory a, Double memory b) pure internal returns (Double memory) {
        return Double({mantissa: div_(mul_(a.mantissa, doubleScale), b.mantissa)});
    }

    function div_(Double memory a, uint b) pure internal returns (Double memory) {
        return Double({mantissa: div_(a.mantissa, b)});
    }

    function div_(uint a, Double memory b) pure internal returns (uint) {
        return div_(mul_(a, doubleScale), b.mantissa);
    }

    function div_(uint a, uint b) pure internal returns (uint) {
        return div_(a, b, "divide by zero");
    }

    function div_(uint a, uint b, string memory errorMessage) pure internal returns (uint) {
        require(b > 0, errorMessage);
        return a / b;
    }

    function fraction(uint a, uint b) pure internal returns (Double memory) {
        return Double({mantissa: div_(mul_(a, doubleScale), b)});
    }
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.6.0;

/*
 * @dev Provides information about the current execution context, including the
 * sender of the transaction and its data. While these are generally available
 * via msg.sender and msg.data, they should not be accessed in such a direct
 * manner, since when dealing with GSN meta-transactions the account sending and
 * paying for execution may not be the actual sender (as far as an application
 * is concerned).
 *
 * This contract is only required for intermediate, library-like contracts.
 */
abstract contract Context {
    function _msgSender() internal view virtual returns (address payable) {
        return msg.sender;
    }

    function _msgData() internal view virtual returns (bytes memory) {
        this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691
        return msg.data;
    }
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.6.0;

/**
 * @dev Library for managing
 * https://en.wikipedia.org/wiki/Set_(abstract_data_type)[sets] of primitive
 * types.
 *
 * Sets have the following properties:
 *
 * - Elements are added, removed, and checked for existence in constant time
 * (O(1)).
 * - Elements are enumerated in O(n). No guarantees are made on the ordering.
 *
 * ```
 * contract Example {
 *     // Add the library methods
 *     using EnumerableSet for EnumerableSet.AddressSet;
 *
 *     // Declare a set state variable
 *     EnumerableSet.AddressSet private mySet;
 * }
 * ```
 *
 * As of v3.0.0, only sets of type `address` (`AddressSet`) and `uint256`
 * (`UintSet`) are supported.
 */
library EnumerableSet {
    // To implement this library for multiple types with as little code
    // repetition as possible, we write it in terms of a generic Set type with
    // bytes32 values.
    // The Set implementation uses private functions, and user-facing
    // implementations (such as AddressSet) are just wrappers around the
    // underlying Set.
    // This means that we can only create new EnumerableSets for types that fit
    // in bytes32.

    struct Set {
        // Storage of set values
        bytes32[] _values;

        // Position of the value in the `values` array, plus 1 because index 0
        // means a value is not in the set.
        mapping (bytes32 => uint256) _indexes;
    }

    /**
     * @dev Add a value to a set. O(1).
     *
     * Returns true if the value was added to the set, that is if it was not
     * already present.
     */
    function _add(Set storage set, bytes32 value) private returns (bool) {
        if (!_contains(set, value)) {
            set._values.push(value);
            // The value is stored at length-1, but we add 1 to all indexes
            // and use 0 as a sentinel value
            set._indexes[value] = set._values.length;
            return true;
        } else {
            return false;
        }
    }

    /**
     * @dev Removes a value from a set. O(1).
     *
     * Returns true if the value was removed from the set, that is if it was
     * present.
     */
    function _remove(Set storage set, bytes32 value) private returns (bool) {
        // We read and store the value's index to prevent multiple reads from the same storage slot
        uint256 valueIndex = set._indexes[value];

        if (valueIndex != 0) { // Equivalent to contains(set, value)
            // To delete an element from the _values array in O(1), we swap the element to delete with the last one in
            // the array, and then remove the last element (sometimes called as 'swap and pop').
            // This modifies the order of the array, as noted in {at}.

            uint256 toDeleteIndex = valueIndex - 1;
            uint256 lastIndex = set._values.length - 1;

            // When the value to delete is the last one, the swap operation is unnecessary. However, since this occurs
            // so rarely, we still do the swap anyway to avoid the gas cost of adding an 'if' statement.

            bytes32 lastvalue = set._values[lastIndex];

            // Move the last value to the index where the value to delete is
            set._values[toDeleteIndex] = lastvalue;
            // Update the index for the moved value
            set._indexes[lastvalue] = toDeleteIndex + 1; // All indexes are 1-based

            // Delete the slot where the moved value was stored
            set._values.pop();

            // Delete the index for the deleted slot
            delete set._indexes[value];

            return true;
        } else {
            return false;
        }
    }

    /**
     * @dev Returns true if the value is in the set. O(1).
     */
    function _contains(Set storage set, bytes32 value) private view returns (bool) {
        return set._indexes[value] != 0;
    }

    /**
     * @dev Returns the number of values on the set. O(1).
     */
    function _length(Set storage set) private view returns (uint256) {
        return set._values.length;
    }

   /**
    * @dev Returns the value stored at position `index` in the set. O(1).
    *
    * Note that there are no guarantees on the ordering of values inside the
    * array, and it may change when more values are added or removed.
    *
    * Requirements:
    *
    * - `index` must be strictly less than {length}.
    */
    function _at(Set storage set, uint256 index) private view returns (bytes32) {
        require(set._values.length > index, "EnumerableSet: index out of bounds");
        return set._values[index];
    }

    // AddressSet

    struct AddressSet {
        Set _inner;
    }

    /**
     * @dev Add a value to a set. O(1).
     *
     * Returns true if the value was added to the set, that is if it was not
     * already present.
     */
    function add(AddressSet storage set, address value) internal returns (bool) {
        return _add(set._inner, bytes32(uint256(value)));
    }

    /**
     * @dev Removes a value from a set. O(1).
     *
     * Returns true if the value was removed from the set, that is if it was
     * present.
     */
    function remove(AddressSet storage set, address value) internal returns (bool) {
        return _remove(set._inner, bytes32(uint256(value)));
    }

    /**
     * @dev Returns true if the value is in the set. O(1).
     */
    function contains(AddressSet storage set, address value) internal view returns (bool) {
        return _contains(set._inner, bytes32(uint256(value)));
    }

    /**
     * @dev Returns the number of values in the set. O(1).
     */
    function length(AddressSet storage set) internal view returns (uint256) {
        return _length(set._inner);
    }

   /**
    * @dev Returns the value stored at position `index` in the set. O(1).
    *
    * Note that there are no guarantees on the ordering of values inside the
    * array, and it may change when more values are added or removed.
    *
    * Requirements:
    *
    * - `index` must be strictly less than {length}.
    */
    function at(AddressSet storage set, uint256 index) internal view returns (address) {
        return address(uint256(_at(set._inner, index)));
    }


    // UintSet

    struct UintSet {
        Set _inner;
    }

    /**
     * @dev Add a value to a set. O(1).
     *
     * Returns true if the value was added to the set, that is if it was not
     * already present.
     */
    function add(UintSet storage set, uint256 value) internal returns (bool) {
        return _add(set._inner, bytes32(value));
    }

    /**
     * @dev Removes a value from a set. O(1).
     *
     * Returns true if the value was removed from the set, that is if it was
     * present.
     */
    function remove(UintSet storage set, uint256 value) internal returns (bool) {
        return _remove(set._inner, bytes32(value));
    }

    /**
     * @dev Returns true if the value is in the set. O(1).
     */
    function contains(UintSet storage set, uint256 value) internal view returns (bool) {
        return _contains(set._inner, bytes32(value));
    }

    /**
     * @dev Returns the number of values on the set. O(1).
     */
    function length(UintSet storage set) internal view returns (uint256) {
        return _length(set._inner);
    }

   /**
    * @dev Returns the value stored at position `index` in the set. O(1).
    *
    * Note that there are no guarantees on the ordering of values inside the
    * array, and it may change when more values are added or removed.
    *
    * Requirements:
    *
    * - `index` must be strictly less than {length}.
    */
    function at(UintSet storage set, uint256 index) internal view returns (uint256) {
        return uint256(_at(set._inner, index));
    }
}

pragma solidity ^0.6.7;

// https://docs.synthetix.io/contracts/Owned
contract Owned {
    address public owner;
    address public nominatedOwner;

    constructor(address _owner) public {
        require(_owner != address(0), "Owner address cannot be 0");
        owner = _owner;
        emit OwnerChanged(address(0), _owner);
    }

    function nominateNewOwner(address _owner) external onlyOwner {
        nominatedOwner = _owner;
        emit OwnerNominated(_owner);
    }

    function acceptOwnership() external {
        require(
            msg.sender == nominatedOwner,
            "You must be nominated before you can accept ownership"
        );
        emit OwnerChanged(owner, nominatedOwner);
        owner = nominatedOwner;
        nominatedOwner = address(0);
    }

    modifier onlyOwner {
        _onlyOwner();
        _;
    }

    function _onlyOwner() private view {
        require(
            msg.sender == owner,
            "Only the contract owner may perform this action"
        );
    }

    event OwnerNominated(address newOwner);
    event OwnerChanged(address oldOwner, address newOwner);
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.6.0;

import "./context.sol";
/**
 * @dev Contract module which provides a basic access control mechanism, where
 * there is an account (an owner) that can be granted exclusive access to
 * specific functions.
 *
 * By default, the owner account will be the one that deploys the contract. This
 * can later be changed with {transferOwnership}.
 *
 * This module is used through inheritance. It will make available the modifier
 * `onlyOwner`, which can be applied to your functions to restrict their use to
 * the owner.
 */
contract Ownable is Context {
    address private _owner;

    event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);

    /**
     * @dev Initializes the contract setting the deployer as the initial owner.
     */
    constructor () internal {
        address msgSender = _msgSender();
        _owner = msgSender;
        emit OwnershipTransferred(address(0), msgSender);
    }

    /**
     * @dev Returns the address of the current owner.
     */
    function owner() public view returns (address) {
        return _owner;
    }

    /**
     * @dev Throws if called by any account other than the owner.
     */
    modifier onlyOwner() {
        require(_owner == _msgSender(), "Ownable: caller is not the owner");
        _;
    }

    /**
     * @dev Leaves the contract without owner. It will not be possible to call
     * `onlyOwner` functions anymore. Can only be called by the current owner.
     *
     * NOTE: Renouncing ownership will leave the contract without an owner,
     * thereby removing any functionality that is only available to the owner.
     */
    function renounceOwnership() public virtual onlyOwner {
        emit OwnershipTransferred(_owner, address(0));
        _owner = address(0);
    }

    /**
     * @dev Transfers ownership of the contract to a new account (`newOwner`).
     * Can only be called by the current owner.
     */
    function transferOwnership(address newOwner) public virtual onlyOwner {
        require(newOwner != address(0), "Ownable: new owner is the zero address");
        emit OwnershipTransferred(_owner, newOwner);
        _owner = newOwner;
    }
}

// File: contracts/GSN/Context.sol

// SPDX-License-Identifier: MIT

pragma solidity ^0.6.0;

import "./safe-math.sol";
import "./context.sol";

// File: contracts/token/ERC20/IERC20.sol


/**
 * @dev Interface of the ERC20 standard as defined in the EIP.
 */
interface IERC20 {
    /**
     * @dev Returns the amount of tokens in existence.
     */
    function totalSupply() external view returns (uint256);

    /**
     * @dev Returns the amount of tokens owned by `account`.
     */
    function balanceOf(address account) external view returns (uint256);

    /**
     * @dev Moves `amount` tokens from the caller's account to `recipient`.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * Emits a {Transfer} event.
     */
    function transfer(address recipient, uint256 amount) external returns (bool);

    /**
     * @dev Returns the remaining number of tokens that `spender` will be
     * allowed to spend on behalf of `owner` through {transferFrom}. This is
     * zero by default.
     *
     * This value changes when {approve} or {transferFrom} are called.
     */
    function allowance(address owner, address spender) external view returns (uint256);

    /**
     * @dev Sets `amount` as the allowance of `spender` over the caller's tokens.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * IMPORTANT: Beware that changing an allowance with this method brings the risk
     * that someone may use both the old and the new allowance by unfortunate
     * transaction ordering. One possible solution to mitigate this race
     * condition is to first reduce the spender's allowance to 0 and set the
     * desired value afterwards:
     * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
     *
     * Emits an {Approval} event.
     */
    function approve(address spender, uint256 amount) external returns (bool);

    /**
     * @dev Moves `amount` tokens from `sender` to `recipient` using the
     * allowance mechanism. `amount` is then deducted from the caller's
     * allowance.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * Emits a {Transfer} event.
     */
    function transferFrom(address sender, address recipient, uint256 amount) external returns (bool);

    /**
     * @dev Emitted when `value` tokens are moved from one account (`from`) to
     * another (`to`).
     *
     * Note that `value` may be zero.
     */
    event Transfer(address indexed from, address indexed to, uint256 value);

    /**
     * @dev Emitted when the allowance of a `spender` for an `owner` is set by
     * a call to {approve}. `value` is the new allowance.
     */
    event Approval(address indexed owner, address indexed spender, uint256 value);
}

// File: contracts/utils/Address.sol


/**
 * @dev Collection of functions related to the address type
 */
library Address {
    /**
     * @dev Returns true if `account` is a contract.
     *
     * [IMPORTANT]
     * ====
     * It is unsafe to assume that an address for which this function returns
     * false is an externally-owned account (EOA) and not a contract.
     *
     * Among others, `isContract` will return false for the following
     * types of addresses:
     *
     *  - an externally-owned account
     *  - a contract in construction
     *  - an address where a contract will be created
     *  - an address where a contract lived, but was destroyed
     * ====
     */
    function isContract(address account) internal view returns (bool) {
        // This method relies on extcodesize, which returns 0 for contracts in
        // construction, since the code is only stored at the end of the
        // constructor execution.

        uint256 size;
        // solhint-disable-next-line no-inline-assembly
        assembly { size := extcodesize(account) }
        return size > 0;
    }

    /**
     * @dev Replacement for Solidity's `transfer`: sends `amount` wei to
     * `recipient`, forwarding all available gas and reverting on errors.
     *
     * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost
     * of certain opcodes, possibly making contracts go over the 2300 gas limit
     * imposed by `transfer`, making them unable to receive funds via
     * `transfer`. {sendValue} removes this limitation.
     *
     * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].
     *
     * IMPORTANT: because control is transferred to `recipient`, care must be
     * taken to not create reentrancy vulnerabilities. Consider using
     * {ReentrancyGuard} or the
     * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
     */
    function sendValue(address payable recipient, uint256 amount) internal {
        require(address(this).balance >= amount, "Address: insufficient balance");

        // solhint-disable-next-line avoid-low-level-calls, avoid-call-value
        (bool success, ) = recipient.call{ value: amount }("");
        require(success, "Address: unable to send value, recipient may have reverted");
    }

    /**
     * @dev Performs a Solidity function call using a low level `call`. A
     * plain`call` is an unsafe replacement for a function call: use this
     * function instead.
     *
     * If `target` reverts with a revert reason, it is bubbled up by this
     * function (like regular Solidity function calls).
     *
     * Returns the raw returned data. To convert to the expected return value,
     * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].
     *
     * Requirements:
     *
     * - `target` must be a contract.
     * - calling `target` with `data` must not revert.
     *
     * _Available since v3.1._
     */
    function functionCall(address target, bytes memory data) internal returns (bytes memory) {
      return functionCall(target, data, "Address: low-level call failed");
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with
     * `errorMessage` as a fallback revert reason when `target` reverts.
     *
     * _Available since v3.1._
     */
    function functionCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) {
        return _functionCallWithValue(target, data, 0, errorMessage);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but also transferring `value` wei to `target`.
     *
     * Requirements:
     *
     * - the calling contract must have an ETH balance of at least `value`.
     * - the called Solidity function must be `payable`.
     *
     * _Available since v3.1._
     */
    function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) {
        return functionCallWithValue(target, data, value, "Address: low-level call with value failed");
    }

    /**
     * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but
     * with `errorMessage` as a fallback revert reason when `target` reverts.
     *
     * _Available since v3.1._
     */
    function functionCallWithValue(address target, bytes memory data, uint256 value, string memory errorMessage) internal returns (bytes memory) {
        require(address(this).balance >= value, "Address: insufficient balance for call");
        return _functionCallWithValue(target, data, value, errorMessage);
    }

    function _functionCallWithValue(address target, bytes memory data, uint256 weiValue, string memory errorMessage) private returns (bytes memory) {
        require(isContract(target), "Address: call to non-contract");

        // solhint-disable-next-line avoid-low-level-calls
        (bool success, bytes memory returndata) = target.call{ value: weiValue }(data);
        if (success) {
            return returndata;
        } else {
            // Look for revert reason and bubble it up if present
            if (returndata.length > 0) {
                // The easiest way to bubble the revert reason is using memory via assembly

                // solhint-disable-next-line no-inline-assembly
                assembly {
                    let returndata_size := mload(returndata)
                    revert(add(32, returndata), returndata_size)
                }
            } else {
                revert(errorMessage);
            }
        }
    }
}

// File: contracts/token/ERC20/ERC20.sol

/**
 * @dev Implementation of the {IERC20} interface.
 *
 * This implementation is agnostic to the way tokens are created. This means
 * that a supply mechanism has to be added in a derived contract using {_mint}.
 * For a generic mechanism see {ERC20PresetMinterPauser}.
 *
 * TIP: For a detailed writeup see our guide
 * https://forum.zeppelin.solutions/t/how-to-implement-erc20-supply-mechanisms/226[How
 * to implement supply mechanisms].
 *
 * We have followed general OpenZeppelin guidelines: functions revert instead
 * of returning `false` on failure. This behavior is nonetheless conventional
 * and does not conflict with the expectations of ERC20 applications.
 *
 * Additionally, an {Approval} event is emitted on calls to {transferFrom}.
 * This allows applications to reconstruct the allowance for all accounts just
 * by listening to said events. Other implementations of the EIP may not emit
 * these events, as it isn't required by the specification.
 *
 * Finally, the non-standard {decreaseAllowance} and {increaseAllowance}
 * functions have been added to mitigate the well-known issues around setting
 * allowances. See {IERC20-approve}.
 */
contract ERC20 is Context, IERC20 {
    using SafeMath for uint256;
    using Address for address;

    mapping (address => uint256) private _balances;

    mapping (address => mapping (address => uint256)) private _allowances;

    uint256 private _totalSupply;

    string private _name;
    string private _symbol;
    uint8 private _decimals;

    /**
     * @dev Sets the values for {name} and {symbol}, initializes {decimals} with
     * a default value of 18.
     *
     * To select a different value for {decimals}, use {_setupDecimals}.
     *
     * All three of these values are immutable: they can only be set once during
     * construction.
     */
    constructor (string memory name, string memory symbol) public {
        _name = name;
        _symbol = symbol;
        _decimals = 18;
    }

    /**
     * @dev Returns the name of the token.
     */
    function name() public view returns (string memory) {
        return _name;
    }

    /**
     * @dev Returns the symbol of the token, usually a shorter version of the
     * name.
     */
    function symbol() public view returns (string memory) {
        return _symbol;
    }

    /**
     * @dev Returns the number of decimals used to get its user representation.
     * For example, if `decimals` equals `2`, a balance of `505` tokens should
     * be displayed to a user as `5,05` (`505 / 10 ** 2`).
     *
     * Tokens usually opt for a value of 18, imitating the relationship between
     * Ether and Wei. This is the value {ERC20} uses, unless {_setupDecimals} is
     * called.
     *
     * NOTE: This information is only used for _display_ purposes: it in
     * no way affects any of the arithmetic of the contract, including
     * {IERC20-balanceOf} and {IERC20-transfer}.
     */
    function decimals() public view returns (uint8) {
        return _decimals;
    }

    /**
     * @dev See {IERC20-totalSupply}.
     */
    function totalSupply() public view override returns (uint256) {
        return _totalSupply;
    }

    /**
     * @dev See {IERC20-balanceOf}.
     */
    function balanceOf(address account) public view override returns (uint256) {
        return _balances[account];
    }

    /**
     * @dev See {IERC20-transfer}.
     *
     * Requirements:
     *
     * - `recipient` cannot be the zero address.
     * - the caller must have a balance of at least `amount`.
     */
    function transfer(address recipient, uint256 amount) public virtual override returns (bool) {
        _transfer(_msgSender(), recipient, amount);
        return true;
    }

    /**
     * @dev See {IERC20-allowance}.
     */
    function allowance(address owner, address spender) public view virtual override returns (uint256) {
        return _allowances[owner][spender];
    }

    /**
     * @dev See {IERC20-approve}.
     *
     * Requirements:
     *
     * - `spender` cannot be the zero address.
     */
    function approve(address spender, uint256 amount) public virtual override returns (bool) {
        _approve(_msgSender(), spender, amount);
        return true;
    }

    /**
     * @dev See {IERC20-transferFrom}.
     *
     * Emits an {Approval} event indicating the updated allowance. This is not
     * required by the EIP. See the note at the beginning of {ERC20};
     *
     * Requirements:
     * - `sender` and `recipient` cannot be the zero address.
     * - `sender` must have a balance of at least `amount`.
     * - the caller must have allowance for ``sender``'s tokens of at least
     * `amount`.
     */
    function transferFrom(address sender, address recipient, uint256 amount) public virtual override returns (bool) {
        _transfer(sender, recipient, amount);
        _approve(sender, _msgSender(), _allowances[sender][_msgSender()].sub(amount, "ERC20: transfer amount exceeds allowance"));
        return true;
    }

    /**
     * @dev Atomically increases the allowance granted to `spender` by the caller.
     *
     * This is an alternative to {approve} that can be used as a mitigation for
     * problems described in {IERC20-approve}.
     *
     * Emits an {Approval} event indicating the updated allowance.
     *
     * Requirements:
     *
     * - `spender` cannot be the zero address.
     */
    function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) {
        _approve(_msgSender(), spender, _allowances[_msgSender()][spender].add(addedValue));
        return true;
    }

    /**
     * @dev Atomically decreases the allowance granted to `spender` by the caller.
     *
     * This is an alternative to {approve} that can be used as a mitigation for
     * problems described in {IERC20-approve}.
     *
     * Emits an {Approval} event indicating the updated allowance.
     *
     * Requirements:
     *
     * - `spender` cannot be the zero address.
     * - `spender` must have allowance for the caller of at least
     * `subtractedValue`.
     */
    function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) {
        _approve(_msgSender(), spender, _allowances[_msgSender()][spender].sub(subtractedValue, "ERC20: decreased allowance below zero"));
        return true;
    }

    /**
     * @dev Moves tokens `amount` from `sender` to `recipient`.
     *
     * This is internal function is equivalent to {transfer}, and can be used to
     * e.g. implement automatic token fees, slashing mechanisms, etc.
     *
     * Emits a {Transfer} event.
     *
     * Requirements:
     *
     * - `sender` cannot be the zero address.
     * - `recipient` cannot be the zero address.
     * - `sender` must have a balance of at least `amount`.
     */
    function _transfer(address sender, address recipient, uint256 amount) internal virtual {
        require(sender != address(0), "ERC20: transfer from the zero address");
        require(recipient != address(0), "ERC20: transfer to the zero address");

        _beforeTokenTransfer(sender, recipient, amount);

        _balances[sender] = _balances[sender].sub(amount, "ERC20: transfer amount exceeds balance");
        _balances[recipient] = _balances[recipient].add(amount);
        emit Transfer(sender, recipient, amount);
    }

    /** @dev Creates `amount` tokens and assigns them to `account`, increasing
     * the total supply.
     *
     * Emits a {Transfer} event with `from` set to the zero address.
     *
     * Requirements
     *
     * - `to` cannot be the zero address.
     */
    function _mint(address account, uint256 amount) internal virtual {
        require(account != address(0), "ERC20: mint to the zero address");

        _beforeTokenTransfer(address(0), account, amount);

        _totalSupply = _totalSupply.add(amount);
        _balances[account] = _balances[account].add(amount);
        emit Transfer(address(0), account, amount);
    }

    /**
     * @dev Destroys `amount` tokens from `account`, reducing the
     * total supply.
     *
     * Emits a {Transfer} event with `to` set to the zero address.
     *
     * Requirements
     *
     * - `account` cannot be the zero address.
     * - `account` must have at least `amount` tokens.
     */
    function _burn(address account, uint256 amount) internal virtual {
        require(account != address(0), "ERC20: burn from the zero address");

        _beforeTokenTransfer(account, address(0), amount);

        _balances[account] = _balances[account].sub(amount, "ERC20: burn amount exceeds balance");
        _totalSupply = _totalSupply.sub(amount);
        emit Transfer(account, address(0), amount);
    }

    /**
     * @dev Sets `amount` as the allowance of `spender` over the `owner` s tokens.
     *
     * This internal function is equivalent to `approve`, and can be used to
     * e.g. set automatic allowances for certain subsystems, etc.
     *
     * Emits an {Approval} event.
     *
     * Requirements:
     *
     * - `owner` cannot be the zero address.
     * - `spender` cannot be the zero address.
     */
    function _approve(address owner, address spender, uint256 amount) internal virtual {
        require(owner != address(0), "ERC20: approve from the zero address");
        require(spender != address(0), "ERC20: approve to the zero address");

        _allowances[owner][spender] = amount;
        emit Approval(owner, spender, amount);
    }

    /**
     * @dev Sets {decimals} to a value other than the default one of 18.
     *
     * WARNING: This function should only be called from the constructor. Most
     * applications that interact with token contracts will not expect
     * {decimals} to ever change, and may work incorrectly if it does.
     */
    function _setupDecimals(uint8 decimals_) internal {
        _decimals = decimals_;
    }

    /**
     * @dev Hook that is called before any transfer of tokens. This includes
     * minting and burning.
     *
     * Calling conditions:
     *
     * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens
     * will be to transferred to `to`.
     * - when `from` is zero, `amount` tokens will be minted for `to`.
     * - when `to` is zero, `amount` of ``from``'s tokens will be burned.
     * - `from` and `to` are never both zero.
     *
     * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
     */
    function _beforeTokenTransfer(address from, address to, uint256 amount) internal virtual { }
}

/**
 * @title SafeERC20
 * @dev Wrappers around ERC20 operations that throw on failure (when the token
 * contract returns false). Tokens that return no value (and instead revert or
 * throw on failure) are also supported, non-reverting calls are assumed to be
 * successful.
 * To use this library you can add a `using SafeERC20 for IERC20;` statement to your contract,
 * which allows you to call the safe operations as `token.safeTransfer(...)`, etc.
 */
library SafeERC20 {
    using SafeMath for uint256;
    using Address for address;

    function safeTransfer(IERC20 token, address to, uint256 value) internal {
        _callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value));
    }

    function safeTransferFrom(IERC20 token, address from, address to, uint256 value) internal {
        _callOptionalReturn(token, abi.encodeWithSelector(token.transferFrom.selector, from, to, value));
    }

    /**
     * @dev Deprecated. This function has issues similar to the ones found in
     * {IERC20-approve}, and its usage is discouraged.
     *
     * Whenever possible, use {safeIncreaseAllowance} and
     * {safeDecreaseAllowance} instead.
     */
    function safeApprove(IERC20 token, address spender, uint256 value) internal {
        // safeApprove should only be called when setting an initial allowance,
        // or when resetting it to zero. To increase and decrease it, use
        // 'safeIncreaseAllowance' and 'safeDecreaseAllowance'
        // solhint-disable-next-line max-line-length
        require((value == 0) || (token.allowance(address(this), spender) == 0),
            "SafeERC20: approve from non-zero to non-zero allowance"
        );
        _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, value));
    }

    function safeIncreaseAllowance(IERC20 token, address spender, uint256 value) internal {
        uint256 newAllowance = token.allowance(address(this), spender).add(value);
        _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));
    }

    function safeDecreaseAllowance(IERC20 token, address spender, uint256 value) internal {
        uint256 newAllowance = token.allowance(address(this), spender).sub(value, "SafeERC20: decreased allowance below zero");
        _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));
    }

    /**
     * @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement
     * on the return value: the return value is optional (but if data is returned, it must not be false).
     * @param token The token targeted by the call.
     * @param data The call data (encoded using abi.encode or one of its variants).
     */
    function _callOptionalReturn(IERC20 token, bytes memory data) private {
        // We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since
        // we're implementing it ourselves. We use {Address.functionCall} to perform this call, which verifies that
        // the target address contains contract code and also asserts for success in the low-level call.

        bytes memory returndata = address(token).functionCall(data, "SafeERC20: low-level call failed");
        if (returndata.length > 0) { // Return data is optional
            // solhint-disable-next-line max-line-length
            require(abi.decode(returndata, (bool)), "SafeERC20: ERC20 operation did not succeed");
        }
    }
}

pragma solidity ^0.6.7;

// Inheritance
import "./owned.sol";

// https://docs.synthetix.io/contracts/Pausable
abstract contract Pausable is Owned {
    uint256 public lastPauseTime;
    bool public paused;

    constructor() internal {
        // This contract is abstract, and thus cannot be instantiated directly
        require(owner != address(0), "Owner must be set");
        // Paused will be false, and lastPauseTime will be 0 upon initialisation
    }

    /**
     * @notice Change the paused state of the contract
     * @dev Only the contract owner may call this.
     */
    function setPaused(bool _paused) external onlyOwner {
        // Ensure we're actually changing the state before we do anything
        if (_paused == paused) {
            return;
        }

        // Set our paused state.
        paused = _paused;

        // If applicable, set the last pause time.
        if (paused) {
            lastPauseTime = now;
        }

        // Let everyone know that our pause state has changed.
        emit PauseChanged(paused);
    }

    event PauseChanged(bool isPaused);

    modifier notPaused {
        require(
            !paused,
            "This action cannot be performed while the contract is paused"
        );
        _;
    }
}

pragma solidity ^0.6.0;

/**
  * @title Careful Math
  * @author Compound
  * @notice Derived from OpenZeppelin's SafeMath library
  *         https://github.com/OpenZeppelin/openzeppelin-solidity/blob/master/contracts/math/SafeMath.sol
  */
contract CarefulMath {

    /**
     * @dev Possible error codes that we can return
     */
    enum MathError {
        NO_ERROR,
        DIVISION_BY_ZERO,
        INTEGER_OVERFLOW,
        INTEGER_UNDERFLOW
    }

    /**
    * @dev Multiplies two numbers, returns an error on overflow.
    */
    function mulUInt(uint a, uint b) internal pure returns (MathError, uint) {
        if (a == 0) {
            return (MathError.NO_ERROR, 0);
        }

        uint c = a * b;

        if (c / a != b) {
            return (MathError.INTEGER_OVERFLOW, 0);
        } else {
            return (MathError.NO_ERROR, c);
        }
    }

    /**
    * @dev Integer division of two numbers, truncating the quotient.
    */
    function divUInt(uint a, uint b) internal pure returns (MathError, uint) {
        if (b == 0) {
            return (MathError.DIVISION_BY_ZERO, 0);
        }

        return (MathError.NO_ERROR, a / b);
    }

    /**
    * @dev Subtracts two numbers, returns an error on overflow (i.e. if subtrahend is greater than minuend).
    */
    function subUInt(uint a, uint b) internal pure returns (MathError, uint) {
        if (b <= a) {
            return (MathError.NO_ERROR, a - b);
        } else {
            return (MathError.INTEGER_UNDERFLOW, 0);
        }
    }

    /**
    * @dev Adds two numbers, returns an error on overflow.
    */
    function addUInt(uint a, uint b) internal pure returns (MathError, uint) {
        uint c = a + b;

        if (c >= a) {
            return (MathError.NO_ERROR, c);
        } else {
            return (MathError.INTEGER_OVERFLOW, 0);
        }
    }

    /**
    * @dev add a and b and then subtract c
    */
    function addThenSubUInt(uint a, uint b, uint c) internal pure returns (MathError, uint) {
        (MathError err0, uint sum) = addUInt(a, b);

        if (err0 != MathError.NO_ERROR) {
            return (err0, 0);
        }

        return subUInt(sum, c);
    }
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.6.0;

/**
 * @dev Wrappers over Solidity's arithmetic operations with added overflow
 * checks.
 *
 * Arithmetic operations in Solidity wrap on overflow. This can easily result
 * in bugs, because programmers usually assume that an overflow raises an
 * error, which is the standard behavior in high level programming languages.
 * `SafeMath` restores this intuition by reverting the transaction when an
 * operation overflows.
 *
 * Using this library instead of the unchecked operations eliminates an entire
 * class of bugs, so it's recommended to use it always.
 */
library SafeMath {
    /**
     * @dev Returns the addition of two unsigned integers, reverting on
     * overflow.
     *
     * Counterpart to Solidity's `+` operator.
     *
     * Requirements:
     *
     * - Addition cannot overflow.
     */
    function add(uint256 a, uint256 b) internal pure returns (uint256) {
        uint256 c = a + b;
        require(c >= a, "SafeMath: addition overflow");

        return c;
    }

    /**
     * @dev Returns the subtraction of two unsigned integers, reverting on
     * overflow (when the result is negative).
     *
     * Counterpart to Solidity's `-` operator.
     *
     * Requirements:
     *
     * - Subtraction cannot overflow.
     */
    function sub(uint256 a, uint256 b) internal pure returns (uint256) {
        return sub(a, b, "SafeMath: subtraction overflow");
    }

    /**
     * @dev Returns the subtraction of two unsigned integers, reverting with custom message on
     * overflow (when the result is negative).
     *
     * Counterpart to Solidity's `-` operator.
     *
     * Requirements:
     *
     * - Subtraction cannot overflow.
     */
    function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
        require(b <= a, errorMessage);
        uint256 c = a - b;

        return c;
    }

    /**
     * @dev Returns the multiplication of two unsigned integers, reverting on
     * overflow.
     *
     * Counterpart to Solidity's `*` operator.
     *
     * Requirements:
     *
     * - Multiplication cannot overflow.
     */
    function mul(uint256 a, uint256 b) internal pure returns (uint256) {
        // Gas optimization: this is cheaper than requiring 'a' not being zero, but the
        // benefit is lost if 'b' is also tested.
        // See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522
        if (a == 0) {
            return 0;
        }

        uint256 c = a * b;
        require(c / a == b, "SafeMath: multiplication overflow");

        return c;
    }

    /**
     * @dev Returns the integer division of two unsigned integers. Reverts on
     * division by zero. The result is rounded towards zero.
     *
     * Counterpart to Solidity's `/` operator. Note: this function uses a
     * `revert` opcode (which leaves remaining gas untouched) while Solidity
     * uses an invalid opcode to revert (consuming all remaining gas).
     *
     * Requirements:
     *
     * - The divisor cannot be zero.
     */
    function div(uint256 a, uint256 b) internal pure returns (uint256) {
        return div(a, b, "SafeMath: division by zero");
    }

    /**
     * @dev Returns the integer division of two unsigned integers. Reverts with custom message on
     * division by zero. The result is rounded towards zero.
     *
     * Counterpart to Solidity's `/` operator. Note: this function uses a
     * `revert` opcode (which leaves remaining gas untouched) while Solidity
     * uses an invalid opcode to revert (consuming all remaining gas).
     *
     * Requirements:
     *
     * - The divisor cannot be zero.
     */
    function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
        require(b > 0, errorMessage);
        uint256 c = a / b;
        // assert(a == b * c + a % b); // There is no case in which this doesn't hold

        return c;
    }

    /**
     * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
     * Reverts when dividing by zero.
     *
     * Counterpart to Solidity's `%` operator. This function uses a `revert`
     * opcode (which leaves remaining gas untouched) while Solidity uses an
     * invalid opcode to revert (consuming all remaining gas).
     *
     * Requirements:
     *
     * - The divisor cannot be zero.
     */
    function mod(uint256 a, uint256 b) internal pure returns (uint256) {
        return mod(a, b, "SafeMath: modulo by zero");
    }

    /**
     * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
     * Reverts with custom message when dividing by zero.
     *
     * Counterpart to Solidity's `%` operator. This function uses a `revert`
     * opcode (which leaves remaining gas untouched) while Solidity uses an
     * invalid opcode to revert (consuming all remaining gas).
     *
     * Requirements:
     *
     * - The divisor cannot be zero.
     */
    function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
        require(b != 0, errorMessage);
        return a % b;
    }
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.6.0;

/**
 * @dev Contract module that helps prevent reentrant calls to a function.
 *
 * Inheriting from `ReentrancyGuard` will make the {nonReentrant} modifier
 * available, which can be applied to functions to make sure there are no nested
 * (reentrant) calls to them.
 *
 * Note that because there is a single `nonReentrant` guard, functions marked as
 * `nonReentrant` may not call one another. This can be worked around by making
 * those functions `private`, and then adding `external` `nonReentrant` entry
 * points to them.
 *
 * TIP: If you would like to learn more about reentrancy and alternative ways
 * to protect against it, check out our blog post
 * https://blog.openzeppelin.com/reentrancy-after-istanbul/[Reentrancy After Istanbul].
 */
contract ReentrancyGuard {
    // Booleans are more expensive than uint256 or any type that takes up a full
    // word because each write operation emits an extra SLOAD to first read the
    // slot's contents, replace the bits taken up by the boolean, and then write
    // back. This is the compiler's defense against contract upgrades and
    // pointer aliasing, and it cannot be disabled.

    // The values being non-zero value makes deployment a bit more expensive,
    // but in exchange the refund on every call to nonReentrant will be lower in
    // amount. Since refunds are capped to a percentage of the total
    // transaction's gas, it is best to keep them low in cases like this one, to
    // increase the likelihood of the full refund coming into effect.
    uint256 private constant _NOT_ENTERED = 1;
    uint256 private constant _ENTERED = 2;

    uint256 private _status;

    constructor () internal {
        _status = _NOT_ENTERED;
    }

    /**
     * @dev Prevents a contract from calling itself, directly or indirectly.
     * Calling a `nonReentrant` function from another `nonReentrant`
     * function is not supported. It is possible to prevent this from happening
     * by making the `nonReentrant` function external, and make it call a
     * `private` function that does the actual work.
     */
    modifier nonReentrant() {
        // On the first call to nonReentrant, _notEntered will be true
        require(_status != _ENTERED, "ReentrancyGuard: reentrant call");

        // Any calls to nonReentrant after this point will fail
        _status = _ENTERED;

        _;

        // By storing the original value once again, a refund is triggered (see
        // https://eips.ethereum.org/EIPS/eip-2200)
        _status = _NOT_ENTERED;
    }
}

// SPDX-License-Identifier: MIT
// https://forum.openzeppelin.com/t/can-not-call-the-function-approve-of-the-usdt-contract/2130/2
// USDT is gay and should be ashamed

pragma solidity ^0.6.0;

interface USDT {
    function approve(address guy, uint256 wad) external;

    function transfer(address _to, uint256 _value) external;
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.6.2;

import "../lib/erc20.sol";

interface IJar is IERC20 {
    function token() external view returns (address);

    function claimInsurance() external; // NOTE: Only yDelegatedVault implements this

    function getRatio() external view returns (uint256);

    function deposit(uint256) external;

    function withdraw(uint256) external;

    function earn() external;

    function decimals() external view returns (uint8);
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.6.2;

interface Converter {
    function convert(address) external returns (uint256);
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.6.0;

interface ICToken {
    function totalSupply() external view returns (uint256);

    function totalBorrows() external returns (uint256);

    function borrowIndex() external returns (uint256);

    function repayBorrow(uint256 repayAmount) external returns (uint256);

    function redeemUnderlying(uint256 redeemAmount) external returns (uint256);

    function borrow(uint256 borrowAmount) external returns (uint256);

    function mint(uint256 mintAmount) external returns (uint256);

    function transfer(address dst, uint256 amount) external returns (bool);

    function transferFrom(
        address src,
        address dst,
        uint256 amount
    ) external returns (bool);

    function approve(address spender, uint256 amount) external returns (bool);

    function allowance(address owner, address spender)
        external
        view
        returns (uint256);

    function balanceOf(address owner) external view returns (uint256);

    function balanceOfUnderlying(address owner) external returns (uint256);

    function getAccountSnapshot(address account)
        external
        view
        returns (
            uint256,
            uint256,
            uint256,
            uint256
        );

    function borrowRatePerBlock() external view returns (uint256);

    function supplyRatePerBlock() external view returns (uint256);

    function totalBorrowsCurrent() external returns (uint256);

    function borrowBalanceCurrent(address account) external returns (uint256);

    function borrowBalanceStored(address account)
        external
        view
        returns (uint256);

    function exchangeRateCurrent() external returns (uint256);

    function exchangeRateStored() external view returns (uint256);

    function getCash() external view returns (uint256);

    function accrueInterest() external returns (uint256);

    function seize(
        address liquidator,
        address borrower,
        uint256 seizeTokens
    ) external returns (uint256);
}

interface ICEther {
    function mint() external payable;

    /**
     * @notice Sender redeems cTokens in exchange for the underlying asset
     * @dev Accrues interest whether or not the operation succeeds, unless reverted
     * @param redeemTokens The number of cTokens to redeem into underlying
     * @return uint 0=success, otherwise a failure (see ErrorReporter.sol for details)
     */
    function redeem(uint256 redeemTokens) external returns (uint256);

    /**
     * @notice Sender redeems cTokens in exchange for a specified amount of underlying asset
     * @dev Accrues interest whether or not the operation succeeds, unless reverted
     * @param redeemAmount The amount of underlying to redeem
     * @return uint 0=success, otherwise a failure (see ErrorReporter.sol for details)
     */
    function redeemUnderlying(uint256 redeemAmount) external returns (uint256);

    /**
     * @notice Sender borrows assets from the protocol to their own address
     * @param borrowAmount The amount of the underlying asset to borrow
     * @return uint 0=success, otherwise a failure (see ErrorReporter.sol for details)
     */
    function borrow(uint256 borrowAmount) external returns (uint256);

    /**
     * @notice Sender repays their own borrow
     * @dev Reverts upon any failure
     */
    function repayBorrow() external payable;

    /**
     * @notice Sender repays a borrow belonging to borrower
     * @dev Reverts upon any failure
     * @param borrower the account with the debt being payed off
     */
    function repayBorrowBehalf(address borrower) external payable;

    /**
     * @notice The sender liquidates the borrowers collateral.
     *  The collateral seized is transferred to the liquidator.
     * @dev Reverts upon any failure
     * @param borrower The borrower of this cToken to be liquidated
     * @param cTokenCollateral The market in which to seize collateral from the borrower
     */
    function liquidateBorrow(address borrower, address cTokenCollateral)
        external
        payable;
}

interface IComptroller {
    function compAccrued(address) external view returns (uint256);

    function compSupplierIndex(address, address)
        external
        view
        returns (uint256);

    function compBorrowerIndex(address, address)
        external
        view
        returns (uint256);

    function compSpeeds(address) external view returns (uint256);

    function compBorrowState(address) external view returns (uint224, uint32);

    function compSupplyState(address) external view returns (uint224, uint32);

    /*** Assets You Are In ***/

    function enterMarkets(address[] calldata cTokens)
        external
        returns (uint256[] memory);

    function exitMarket(address cToken) external returns (uint256);

    /*** Policy Hooks ***/

    function mintAllowed(
        address cToken,
        address minter,
        uint256 mintAmount
    ) external returns (uint256);

    function mintVerify(
        address cToken,
        address minter,
        uint256 mintAmount,
        uint256 mintTokens
    ) external;

    function redeemAllowed(
        address cToken,
        address redeemer,
        uint256 redeemTokens
    ) external returns (uint256);

    function redeemVerify(
        address cToken,
        address redeemer,
        uint256 redeemAmount,
        uint256 redeemTokens
    ) external;

    function borrowAllowed(
        address cToken,
        address borrower,
        uint256 borrowAmount
    ) external returns (uint256);

    function borrowVerify(
        address cToken,
        address borrower,
        uint256 borrowAmount
    ) external;

    function repayBorrowAllowed(
        address cToken,
        address payer,
        address borrower,
        uint256 repayAmount
    ) external returns (uint256);

    function repayBorrowVerify(
        address cToken,
        address payer,
        address borrower,
        uint256 repayAmount,
        uint256 borrowerIndex
    ) external;

    function liquidateBorrowAllowed(
        address cTokenBorrowed,
        address cTokenCollateral,
        address liquidator,
        address borrower,
        uint256 repayAmount
    ) external returns (uint256);

    function liquidateBorrowVerify(
        address cTokenBorrowed,
        address cTokenCollateral,
        address liquidator,
        address borrower,
        uint256 repayAmount,
        uint256 seizeTokens
    ) external;

    function seizeAllowed(
        address cTokenCollateral,
        address cTokenBorrowed,
        address liquidator,
        address borrower,
        uint256 seizeTokens
    ) external returns (uint256);

    function seizeVerify(
        address cTokenCollateral,
        address cTokenBorrowed,
        address liquidator,
        address borrower,
        uint256 seizeTokens
    ) external;

    function transferAllowed(
        address cToken,
        address src,
        address dst,
        uint256 transferTokens
    ) external returns (uint256);

    function transferVerify(
        address cToken,
        address src,
        address dst,
        uint256 transferTokens
    ) external;

    /*** Liquidity/Liquidation Calculations ***/

    function liquidateCalculateSeizeTokens(
        address cTokenBorrowed,
        address cTokenCollateral,
        uint256 repayAmount
    ) external view returns (uint256, uint256);

    // Claim all the COMP accrued by holder in all markets
    function claimComp(address holder) external;

    // Claim all the COMP accrued by holder in specific markets
    function claimComp(address holder, address[] calldata cTokens) external;

    // Claim all the COMP accrued by specific holders in specific markets for their supplies and/or borrows
    function claimComp(
        address[] calldata holders,
        address[] calldata cTokens,
        bool borrowers,
        bool suppliers
    ) external;

    function markets(address cTokenAddress)
        external
        view
        returns (bool, uint256);
}

interface ICompoundLens {
    function getCompBalanceMetadataExt(
        address comp,
        address comptroller,
        address account
    )
        external
        returns (
            uint256 balance,
            uint256 votes,
            address delegate,
            uint256 allocated
        );
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.6.7;

interface Proxy {
    function execute(
        address to,
        uint256 value,
        bytes calldata data
    ) external returns (bool, bytes memory);

    function increaseAmount(uint256) external;
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.6.7;

interface ICurveFi_2 {
    function get_virtual_price() external view returns (uint256);

    function add_liquidity(uint256[2] calldata amounts, uint256 min_mint_amount)
        external;

    function remove_liquidity_imbalance(
        uint256[2] calldata amounts,
        uint256 max_burn_amount
    ) external;

    function remove_liquidity(uint256 _amount, uint256[2] calldata amounts)
        external;

    function exchange(
        int128 from,
        int128 to,
        uint256 _from_amount,
        uint256 _min_to_amount
    ) external;

    function balances(int128) external view returns (uint256);
}

interface ICurveFi_3 {
    function get_virtual_price() external view returns (uint256);

    function add_liquidity(uint256[3] calldata amounts, uint256 min_mint_amount)
        external;

    function remove_liquidity_imbalance(
        uint256[3] calldata amounts,
        uint256 max_burn_amount
    ) external;

    function remove_liquidity(uint256 _amount, uint256[3] calldata amounts)
        external;

    function exchange(
        int128 from,
        int128 to,
        uint256 _from_amount,
        uint256 _min_to_amount
    ) external;

    function balances(uint256) external view returns (uint256);
}

interface ICurveFi_4 {
    function get_virtual_price() external view returns (uint256);

    function add_liquidity(uint256[4] calldata amounts, uint256 min_mint_amount)
        external;

    function remove_liquidity_imbalance(
        uint256[4] calldata amounts,
        uint256 max_burn_amount
    ) external;

    function remove_liquidity(uint256 _amount, uint256[4] calldata amounts)
        external;

    function exchange(
        int128 from,
        int128 to,
        uint256 _from_amount,
        uint256 _min_to_amount
    ) external;

    function balances(int128) external view returns (uint256);
}

interface ICurveZap_4 {
    function add_liquidity(
        uint256[4] calldata uamounts,
        uint256 min_mint_amount
    ) external;

    function remove_liquidity(uint256 _amount, uint256[4] calldata min_uamounts)
        external;

    function remove_liquidity_imbalance(
        uint256[4] calldata uamounts,
        uint256 max_burn_amount
    ) external;

    function calc_withdraw_one_coin(uint256 _token_amount, int128 i)
        external
        returns (uint256);

    function remove_liquidity_one_coin(
        uint256 _token_amount,
        int128 i,
        uint256 min_uamount
    ) external;

    function remove_liquidity_one_coin(
        uint256 _token_amount,
        int128 i,
        uint256 min_uamount,
        bool donate_dust
    ) external;

    function withdraw_donated_dust() external;

    function coins(int128 arg0) external returns (address);

    function underlying_coins(int128 arg0) external returns (address);

    function curve() external returns (address);

    function token() external returns (address);
}

interface ICurveZap {
    function remove_liquidity_one_coin(
        uint256 _token_amount,
        int128 i,
        uint256 min_uamount
    ) external;
}

interface ICurveGauge {
    function deposit(uint256 _value) external;

    function deposit(uint256 _value, address addr) external;

    function balanceOf(address arg0) external view returns (uint256);

    function withdraw(uint256 _value) external;

    function withdraw(uint256 _value, bool claim_rewards) external;

    function claim_rewards() external;

    function claim_rewards(address addr) external;

    function claimable_tokens(address addr) external returns (uint256);

    function claimable_reward(address addr) external view returns (uint256);

    function integrate_fraction(address arg0) external view returns (uint256);
}

interface ICurveMintr {
    function mint(address) external;

    function minted(address arg0, address arg1) external view returns (uint256);
}

interface ICurveVotingEscrow {
    function locked(address arg0)
        external
        view
        returns (int128 amount, uint256 end);

    function locked__end(address _addr) external view returns (uint256);

    function create_lock(uint256, uint256) external;

    function increase_amount(uint256) external;

    function increase_unlock_time(uint256 _unlock_time) external;

    function withdraw() external;

    function smart_wallet_checker() external returns (address);
}

interface ICurveSmartContractChecker {
    function wallets(address) external returns (bool);

    function approveWallet(address _wallet) external;
}

// SPDX-License-Identifier: MIT

// SPDX-License-Identifier: MIT
pragma solidity ^0.6.2;

interface UniswapRouterV2 {
    function swapExactTokensForTokens(
        uint256 amountIn,
        uint256 amountOutMin,
        address[] calldata path,
        address to,
        uint256 deadline
    ) external returns (uint256[] memory amounts);

    function addLiquidity(
        address tokenA,
        address tokenB,
        uint256 amountADesired,
        uint256 amountBDesired,
        uint256 amountAMin,
        uint256 amountBMin,
        address to,
        uint256 deadline
    )
        external
        returns (
            uint256 amountA,
            uint256 amountB,
            uint256 liquidity
        );

    function addLiquidityETH(
        address token,
        uint256 amountTokenDesired,
        uint256 amountTokenMin,
        uint256 amountETHMin,
        address to,
        uint256 deadline
    )
        external
        payable
        returns (
            uint256 amountToken,
            uint256 amountETH,
            uint256 liquidity
        );

    function removeLiquidity(
        address tokenA,
        address tokenB,
        uint256 liquidity,
        uint256 amountAMin,
        uint256 amountBMin,
        address to,
        uint256 deadline
    ) external returns (uint256 amountA, uint256 amountB);

    function getAmountsOut(uint256 amountIn, address[] calldata path)
        external
        view
        returns (uint256[] memory amounts);

    function getAmountsIn(uint256 amountOut, address[] calldata path)
        external
        view
        returns (uint256[] memory amounts);

    function swapETHForExactTokens(
        uint256 amountOut,
        address[] calldata path,
        address to,
        uint256 deadline
    ) external payable returns (uint256[] memory amounts);

    function swapExactETHForTokens(
        uint256 amountOutMin,
        address[] calldata path,
        address to,
        uint256 deadline
    ) external payable returns (uint256[] memory amounts);
}

interface IUniswapV2Pair {
    event Approval(
        address indexed owner,
        address indexed spender,
        uint256 value
    );
    event Transfer(address indexed from, address indexed to, uint256 value);

    function name() external pure returns (string memory);

    function symbol() external pure returns (string memory);

    function decimals() external pure returns (uint8);

    function totalSupply() external view returns (uint256);

    function balanceOf(address owner) external view returns (uint256);

    function allowance(address owner, address spender)
        external
        view
        returns (uint256);

    function approve(address spender, uint256 value) external returns (bool);

    function transfer(address to, uint256 value) external returns (bool);

    function transferFrom(
        address from,
        address to,
        uint256 value
    ) external returns (bool);

    function DOMAIN_SEPARATOR() external view returns (bytes32);

    function PERMIT_TYPEHASH() external pure returns (bytes32);

    function nonces(address owner) external view returns (uint256);

    function permit(
        address owner,
        address spender,
        uint256 value,
        uint256 deadline,
        uint8 v,
        bytes32 r,
        bytes32 s
    ) external;

    event Mint(address indexed sender, uint256 amount0, uint256 amount1);
    event Burn(
        address indexed sender,
        uint256 amount0,
        uint256 amount1,
        address indexed to
    );
    event Swap(
        address indexed sender,
        uint256 amount0In,
        uint256 amount1In,
        uint256 amount0Out,
        uint256 amount1Out,
        address indexed to
    );
    event Sync(uint112 reserve0, uint112 reserve1);

    function MINIMUM_LIQUIDITY() external pure returns (uint256);

    function factory() external view returns (address);

    function token0() external view returns (address);

    function token1() external view returns (address);

    function getReserves()
        external
        view
        returns (
            uint112 reserve0,
            uint112 reserve1,
            uint32 blockTimestampLast
        );

    function price0CumulativeLast() external view returns (uint256);

    function price1CumulativeLast() external view returns (uint256);

    function kLast() external view returns (uint256);

    function mint(address to) external returns (uint256 liquidity);

    function burn(address to)
        external
        returns (uint256 amount0, uint256 amount1);

    function swap(
        uint256 amount0Out,
        uint256 amount1Out,
        address to,
        bytes calldata data
    ) external;

    function skim(address to) external;

    function sync() external;
}

interface IUniswapV2Factory {
    event PairCreated(
        address indexed token0,
        address indexed token1,
        address pair,
        uint256
    );

    function getPair(address tokenA, address tokenB)
        external
        view
        returns (address pair);

    function allPairs(uint256) external view returns (address pair);

    function allPairsLength() external view returns (uint256);

    function feeTo() external view returns (address);

    function feeToSetter() external view returns (address);

    function createPair(address tokenA, address tokenB)
        external
        returns (address pair);
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.6.2;

interface IJarConverter {
    function convert(
        address _refundExcess, // address to send the excess amount when adding liquidity
        uint256 _amount, // UNI LP Amount
        bytes calldata _data
    ) external returns (uint256);
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.6.0;

interface IController {
    function jars(address) external view returns (address);

    function rewards() external view returns (address);

    function devfund() external view returns (address);

    function treasury() external view returns (address);

    function balanceOf(address) external view returns (uint256);

    function withdraw(address, uint256) external;

    function earn(address, uint256) external;
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.6.7;

interface IMasterchef {
    function BONUS_MULTIPLIER() external view returns (uint256);

    function add(
        uint256 _allocPoint,
        address _lpToken,
        bool _withUpdate
    ) external;

    function bonusEndBlock() external view returns (uint256);

    function deposit(uint256 _pid, uint256 _amount) external;

    function dev(address _devaddr) external;

    function devFundDivRate() external view returns (uint256);

    function devaddr() external view returns (address);

    function emergencyWithdraw(uint256 _pid) external;

    function getMultiplier(uint256 _from, uint256 _to)
        external
        view
        returns (uint256);

    function massUpdatePools() external;

    function owner() external view returns (address);

    function pendingPickle(uint256 _pid, address _user)
        external
        view
        returns (uint256);

    function pickle() external view returns (address);

    function picklePerBlock() external view returns (uint256);

    function poolInfo(uint256)
        external
        view
        returns (
            address lpToken,
            uint256 allocPoint,
            uint256 lastRewardBlock,
            uint256 accPicklePerShare
        );

    function poolLength() external view returns (uint256);

    function renounceOwnership() external;

    function set(
        uint256 _pid,
        uint256 _allocPoint,
        bool _withUpdate
    ) external;

    function setBonusEndBlock(uint256 _bonusEndBlock) external;

    function setDevFundDivRate(uint256 _devFundDivRate) external;

    function setPicklePerBlock(uint256 _picklePerBlock) external;

    function startBlock() external view returns (uint256);

    function totalAllocPoint() external view returns (uint256);

    function transferOwnership(address newOwner) external;

    function updatePool(uint256 _pid) external;

    function userInfo(uint256, address)
        external
        view
        returns (uint256 amount, uint256 rewardDebt);

    function withdraw(uint256 _pid, uint256 _amount) external;
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.6.2;

interface IStakingRewards {
    function balanceOf(address account) external view returns (uint256);

    function earned(address account) external view returns (uint256);

    function exit() external;

    function getReward() external;

    function getRewardForDuration() external view returns (uint256);

    function lastTimeRewardApplicable() external view returns (uint256);

    function lastUpdateTime() external view returns (uint256);

    function notifyRewardAmount(uint256 reward) external;

    function periodFinish() external view returns (uint256);

    function rewardPerToken() external view returns (uint256);

    function rewardPerTokenStored() external view returns (uint256);

    function rewardRate() external view returns (uint256);

    function rewards(address) external view returns (uint256);

    function rewardsDistribution() external view returns (address);

    function rewardsDuration() external view returns (uint256);

    function rewardsToken() external view returns (address);

    function stake(uint256 amount) external;

    function stakeWithPermit(
        uint256 amount,
        uint256 deadline,
        uint8 v,
        bytes32 r,
        bytes32 s
    ) external;

    function stakingToken() external view returns (address);

    function totalSupply() external view returns (uint256);

    function userRewardPerTokenPaid(address) external view returns (uint256);

    function withdraw(uint256 amount) external;
}

interface IStakingRewardsFactory {
    function deploy(address stakingToken, uint256 rewardAmount) external;

    function isOwner() external view returns (bool);

    function notifyRewardAmount(address stakingToken) external;

    function notifyRewardAmounts() external;

    function owner() external view returns (address);

    function renounceOwnership() external;

    function rewardsToken() external view returns (address);

    function stakingRewardsGenesis() external view returns (uint256);

    function stakingRewardsInfoByStakingToken(address)
        external
        view
        returns (address stakingRewards, uint256 rewardAmount);

    function stakingTokens(uint256) external view returns (address);

    function transferOwnership(address newOwner) external;
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.6.0;

interface WETH {
    function name() external view returns (string memory);

    function approve(address guy, uint256 wad) external returns (bool);

    function totalSupply() external view returns (uint256);

    function transferFrom(
        address src,
        address dst,
        uint256 wad
    ) external returns (bool);

    function withdraw(uint256 wad) external;

    function decimals() external view returns (uint8);

    function balanceOf(address) external view returns (uint256);

    function symbol() external view returns (string memory);

    function transfer(address dst, uint256 wad) external returns (bool);

    function deposit() external payable;

    function allowance(address, address) external view returns (uint256);
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.6.2;

interface IStrategy {
    function rewards() external view returns (address);

    function gauge() external view returns (address);

    function want() external view returns (address);

    function timelock() external view returns (address);

    function deposit() external;

    function withdrawForSwap(uint256) external returns (uint256);

    function withdraw(address) external;

    function withdraw(uint256) external;

    function skim() external;

    function withdrawAll() external returns (uint256);

    function balanceOf() external view returns (uint256);

    function harvest() external;

    function setTimelock(address) external;

    function setController(address _controller) external;

    function execute(address _target, bytes calldata _data)
        external
        payable
        returns (bytes memory response);

    function execute(bytes calldata _data)
        external
        payable
        returns (bytes memory response);
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.6.2;

interface OneSplitAudit {
    function getExpectedReturn(
        address fromToken,
        address toToken,
        uint256 amount,
        uint256 parts,
        uint256 featureFlags
    )
        external
        view
        returns (uint256 returnAmount, uint256[] memory distribution);

    function swap(
        address fromToken,
        address toToken,
        uint256 amount,
        uint256 minReturn,
        uint256[] calldata distribution,
        uint256 featureFlags
    ) external payable;
}

// https://github.com/iearn-finance/jars/blob/master/contracts/controllers/StrategyControllerV1.sol

pragma solidity ^0.6.7;
pragma experimental ABIEncoderV2;

import "./interfaces/controller.sol";

import "./lib/erc20.sol";
import "./lib/safe-math.sol";

import "./interfaces/jar.sol";
import "./interfaces/jar-converter.sol";
import "./interfaces/onesplit.sol";
import "./interfaces/strategy.sol";
import "./interfaces/converter.sol";

contract ControllerV4 {
    using SafeERC20 for IERC20;
    using Address for address;
    using SafeMath for uint256;

    address public constant burn = 0x000000000000000000000000000000000000dEaD;
    address public onesplit = 0xC586BeF4a0992C495Cf22e1aeEE4E446CECDee0E;

    address public governance;
    address public strategist;
    address public devfund;
    address public treasury;
    address public timelock;

    // Convenience fee 0.1%
    uint256 public convenienceFee = 100;
    uint256 public constant convenienceFeeMax = 100000;

    mapping(address => address) public jars;
    mapping(address => address) public strategies;
    mapping(address => mapping(address => address)) public converters;
    mapping(address => mapping(address => bool)) public approvedStrategies;
    mapping(address => bool) public approvedJarConverters;

    uint256 public split = 500;
    uint256 public constant max = 10000;

    constructor(
        address _governance,
        address _strategist,
        address _timelock,
        address _devfund,
        address _treasury
    ) public {
        governance = _governance;
        strategist = _strategist;
        timelock = _timelock;
        devfund = _devfund;
        treasury = _treasury;
    }

    function setDevFund(address _devfund) public {
        require(msg.sender == governance, "!governance");
        devfund = _devfund;
    }

    function setTreasury(address _treasury) public {
        require(msg.sender == governance, "!governance");
        treasury = _treasury;
    }

    function setStrategist(address _strategist) public {
        require(msg.sender == governance, "!governance");
        strategist = _strategist;
    }

    function setSplit(uint256 _split) public {
        require(msg.sender == governance, "!governance");
        split = _split;
    }

    function setOneSplit(address _onesplit) public {
        require(msg.sender == governance, "!governance");
        onesplit = _onesplit;
    }

    function setGovernance(address _governance) public {
        require(msg.sender == governance, "!governance");
        governance = _governance;
    }

    function setTimelock(address _timelock) public {
        require(msg.sender == timelock, "!timelock");
        timelock = _timelock;
    }

    function setJar(address _token, address _jar) public {
        require(
            msg.sender == strategist || msg.sender == governance,
            "!strategist"
        );
        require(jars[_token] == address(0), "jar");
        jars[_token] = _jar;
    }

    function approveJarConverter(address _converter) public {
        require(msg.sender == governance, "!governance");
        approvedJarConverters[_converter] = true;
    }

    function revokeJarConverter(address _converter) public {
        require(msg.sender == governance, "!governance");
        approvedJarConverters[_converter] = false;
    }

    function approveStrategy(address _token, address _strategy) public {
        require(msg.sender == timelock, "!timelock");
        approvedStrategies[_token][_strategy] = true;
    }

    function revokeStrategy(address _token, address _strategy) public {
        require(msg.sender == governance, "!governance");
        approvedStrategies[_token][_strategy] = false;
    }

    function setConvenienceFee(uint256 _convenienceFee) external {
        require(msg.sender == timelock, "!timelock");
        convenienceFee = _convenienceFee;
    }

    function setStrategy(address _token, address _strategy) public {
        require(
            msg.sender == strategist || msg.sender == governance,
            "!strategist"
        );
        require(approvedStrategies[_token][_strategy] == true, "!approved");

        address _current = strategies[_token];
        if (_current != address(0)) {
            IStrategy(_current).withdrawAll();
        }
        strategies[_token] = _strategy;
    }

    function earn(address _token, uint256 _amount) public {
        address _strategy = strategies[_token];
        address _want = IStrategy(_strategy).want();
        if (_want != _token) {
            address converter = converters[_token][_want];
            IERC20(_token).safeTransfer(converter, _amount);
            _amount = Converter(converter).convert(_strategy);
            IERC20(_want).safeTransfer(_strategy, _amount);
        } else {
            IERC20(_token).safeTransfer(_strategy, _amount);
        }
        IStrategy(_strategy).deposit();
    }

    function balanceOf(address _token) external view returns (uint256) {
        return IStrategy(strategies[_token]).balanceOf();
    }

    function withdrawAll(address _token) public {
        require(
            msg.sender == strategist || msg.sender == governance,
            "!strategist"
        );
        IStrategy(strategies[_token]).withdrawAll();
    }

    function inCaseTokensGetStuck(address _token, uint256 _amount) public {
        require(
            msg.sender == strategist || msg.sender == governance,
            "!governance"
        );
        IERC20(_token).safeTransfer(msg.sender, _amount);
    }

    function inCaseStrategyTokenGetStuck(address _strategy, address _token)
        public
    {
        require(
            msg.sender == strategist || msg.sender == governance,
            "!governance"
        );
        IStrategy(_strategy).withdraw(_token);
    }

    function getExpectedReturn(
        address _strategy,
        address _token,
        uint256 parts
    ) public view returns (uint256 expected) {
        uint256 _balance = IERC20(_token).balanceOf(_strategy);
        address _want = IStrategy(_strategy).want();
        (expected, ) = OneSplitAudit(onesplit).getExpectedReturn(
            _token,
            _want,
            _balance,
            parts,
            0
        );
    }

    // Only allows to withdraw non-core strategy tokens ~ this is over and above normal yield
    function yearn(
        address _strategy,
        address _token,
        uint256 parts
    ) public {
        require(
            msg.sender == strategist || msg.sender == governance,
            "!governance"
        );
        // This contract should never have value in it, but just incase since this is a public call
        uint256 _before = IERC20(_token).balanceOf(address(this));
        IStrategy(_strategy).withdraw(_token);
        uint256 _after = IERC20(_token).balanceOf(address(this));
        if (_after > _before) {
            uint256 _amount = _after.sub(_before);
            address _want = IStrategy(_strategy).want();
            uint256[] memory _distribution;
            uint256 _expected;
            _before = IERC20(_want).balanceOf(address(this));
            IERC20(_token).safeApprove(onesplit, 0);
            IERC20(_token).safeApprove(onesplit, _amount);
            (_expected, _distribution) = OneSplitAudit(onesplit)
                .getExpectedReturn(_token, _want, _amount, parts, 0);
            OneSplitAudit(onesplit).swap(
                _token,
                _want,
                _amount,
                _expected,
                _distribution,
                0
            );
            _after = IERC20(_want).balanceOf(address(this));
            if (_after > _before) {
                _amount = _after.sub(_before);
                uint256 _treasury = _amount.mul(split).div(max);
                earn(_want, _amount.sub(_treasury));
                IERC20(_want).safeTransfer(treasury, _treasury);
            }
        }
    }

    function withdraw(address _token, uint256 _amount) public {
        require(msg.sender == jars[_token], "!jar");
        IStrategy(strategies[_token]).withdraw(_amount);
    }

    // Function to swap between jars
    function swapExactJarForJar(
        address _fromJar, // From which Jar
        address _toJar, // To which Jar
        uint256 _fromJarAmount, // How much jar tokens to swap
        uint256 _toJarMinAmount, // How much jar tokens you'd like at a minimum
        address payable[] calldata _targets,
        bytes[] calldata _data
    ) external returns (uint256) {
        require(_targets.length == _data.length, "!length");

        // Only return last response
        for (uint256 i = 0; i < _targets.length; i++) {
            require(_targets[i] != address(0), "!converter");
            require(approvedJarConverters[_targets[i]], "!converter");
        }

        address _fromJarToken = IJar(_fromJar).token();
        address _toJarToken = IJar(_toJar).token();

        // Get pTokens from msg.sender
        IERC20(_fromJar).safeTransferFrom(
            msg.sender,
            address(this),
            _fromJarAmount
        );

        // Calculate how much underlying
        // is the amount of pTokens worth
        uint256 _fromJarUnderlyingAmount = _fromJarAmount
            .mul(IJar(_fromJar).getRatio())
            .div(10**uint256(IJar(_fromJar).decimals()));

        // Call 'withdrawForSwap' on Jar's current strategy if Jar
        // doesn't have enough initial capital.
        // This has moves the funds from the strategy to the Jar's
        // 'earnable' amount. Enabling 'free' withdrawals
        uint256 _fromJarAvailUnderlying = IERC20(_fromJarToken).balanceOf(
            _fromJar
        );
        if (_fromJarAvailUnderlying < _fromJarUnderlyingAmount) {
            IStrategy(strategies[_fromJarToken]).withdrawForSwap(
                _fromJarUnderlyingAmount.sub(_fromJarAvailUnderlying)
            );
        }

        // Withdraw from Jar
        // Note: this is free since its still within the "earnable" amount
        //       as we transferred the access
        IERC20(_fromJar).safeApprove(_fromJar, 0);
        IERC20(_fromJar).safeApprove(_fromJar, _fromJarAmount);
        IJar(_fromJar).withdraw(_fromJarAmount);

        // Calculate fee
        uint256 _fromUnderlyingBalance = IERC20(_fromJarToken).balanceOf(
            address(this)
        );
        uint256 _convenienceFee = _fromUnderlyingBalance.mul(convenienceFee).div(
            convenienceFeeMax
        );

        if (_convenienceFee > 1) {
            IERC20(_fromJarToken).safeTransfer(devfund, _convenienceFee.div(2));
            IERC20(_fromJarToken).safeTransfer(treasury, _convenienceFee.div(2));
        }

        // Executes sequence of logic
        for (uint256 i = 0; i < _targets.length; i++) {
            _execute(_targets[i], _data[i]);
        }

        // Deposit into new Jar
        uint256 _toBal = IERC20(_toJarToken).balanceOf(address(this));
        IERC20(_toJarToken).safeApprove(_toJar, 0);
        IERC20(_toJarToken).safeApprove(_toJar, _toBal);
        IJar(_toJar).deposit(_toBal);

        // Send Jar Tokens to user
        uint256 _toJarBal = IJar(_toJar).balanceOf(address(this));
        if (_toJarBal < _toJarMinAmount) {
            revert("!min-jar-amount");
        }

        IJar(_toJar).transfer(msg.sender, _toJarBal);

        return _toJarBal;
    }

    function _execute(address _target, bytes memory _data)
        internal
        returns (bytes memory response)
    {
        require(_target != address(0), "!target");

        // call contract in current context
        assembly {
            let succeeded := delegatecall(
                sub(gas(), 5000),
                _target,
                add(_data, 0x20),
                mload(_data),
                0,
                0
            )
            let size := returndatasize()

            response := mload(0x40)
            mstore(
                0x40,
                add(response, and(add(add(size, 0x20), 0x1f), not(0x1f)))
            )
            mstore(response, size)
            returndatacopy(add(response, 0x20), 0, size)

            switch iszero(succeeded)
                case 1 {
                    // throw if delegatecall failed
                    revert(add(response, 0x20), size)
                }
        }
    }
}

pragma solidity ^0.6.7;

interface IERC20 {
    function totalSupply() external view returns (uint256);

    function balanceOf(address account) external view returns (uint256);

    function transfer(address recipient, uint256 amount)
        external
        returns (bool);

    function allowance(address owner, address spender)
        external
        view
        returns (uint256);

    function approve(address spender, uint256 amount) external returns (bool);

    function transferFrom(
        address sender,
        address recipient,
        uint256 amount
    ) external returns (bool);

    event Transfer(address indexed from, address indexed to, uint256 value);
    event Approval(
        address indexed owner,
        address indexed spender,
        uint256 value
    );
}

interface MasterChef {
    function userInfo(uint256, address)
        external
        view
        returns (uint256, uint256);
}

contract PickleVoteProxy {
    // ETH/PICKLE token
    IERC20 public constant votes = IERC20(
        0xdc98556Ce24f007A5eF6dC1CE96322d65832A819
    );

    // Pickle's masterchef contract
    MasterChef public constant chef = MasterChef(
        0xbD17B1ce622d73bD438b9E658acA5996dc394b0d
    );

    // Pool 0 is the ETH/PICKLE pool
    uint256 public constant pool = uint256(0);

    // Using 9 decimals as we're square rooting the votes
    function decimals() external pure returns (uint8) {
        return uint8(9);
    }

    function name() external pure returns (string memory) {
        return "PICKLEs In The Citadel";
    }

    function symbol() external pure returns (string memory) {
        return "PICKLE C";
    }

    function totalSupply() external view returns (uint256) {
        return sqrt(votes.totalSupply());
    }

    function balanceOf(address _voter) external view returns (uint256) {
        (uint256 _votes, ) = chef.userInfo(pool, _voter);
        return sqrt(_votes);
    }

    function sqrt(uint256 x) public pure returns (uint256 y) {
        uint256 z = (x + 1) / 2;
        y = x;
        while (z < y) {
            y = z;
            z = (x / z + z) / 2;
        }
    }

    constructor() public {}
}

pragma solidity ^0.6.7;

import "../lib/safe-math.sol";
import "../lib/erc20.sol";

import "../interfaces/uniswapv2.sol";
import "../interfaces/curve.sol";

// Converts Curve LP Tokens to UNI LP Tokens
contract CurveProxyLogic {
    using SafeMath for uint256;
    using SafeERC20 for IERC20;

    function remove_liquidity_one_coin(
        address curve,
        address curveLp,
        int128 index
    ) public {
        uint256 lpAmount = IERC20(curveLp).balanceOf(address(this));

        IERC20(curveLp).safeApprove(curve, 0);
        IERC20(curveLp).safeApprove(curve, lpAmount);

        ICurveZap(curve).remove_liquidity_one_coin(lpAmount, index, 0);
    }

    function add_liquidity(
        address curve,
        bytes4 curveFunctionSig,
        uint256 curvePoolSize,
        uint256 curveUnderlyingIndex,
        address underlying
    ) public {
        uint256 underlyingAmount = IERC20(underlying).balanceOf(address(this));

        // curveFunctionSig should be the abi.encodedFormat of
        // add_liquidity(uint256[N_COINS],uint256)
        // The reason why its here is because different curve pools
        // have a different function signature

        uint256[] memory liquidity = new uint256[](curvePoolSize);
        liquidity[curveUnderlyingIndex] = underlyingAmount;

        bytes memory callData = abi.encodePacked(
            curveFunctionSig,
            liquidity,
            uint256(0)
        );

        IERC20(underlying).safeApprove(curve, 0);
        IERC20(underlying).safeApprove(curve, underlyingAmount);
        (bool success, ) = curve.call(callData);
        require(success, "!success");
    }
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.6.7;
pragma experimental ABIEncoderV2;

import "../lib/safe-math.sol";
import "../lib/erc20.sol";

import "../interfaces/uniswapv2.sol";
import "../interfaces/curve.sol";

// Converts Curve LP Tokens to UNI LP Tokens
contract UniswapV2ProxyLogic {
    using SafeMath for uint256;
    using SafeERC20 for IERC20;

    IUniswapV2Factory public constant factory = IUniswapV2Factory(
        0x5C69bEe701ef814a2B6a3EDD4B1652CB9cc5aA6f
    );
    UniswapRouterV2 public constant router = UniswapRouterV2(
        0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D
    );

    address public constant weth = 0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2;

    // babylonian method (https://en.wikipedia.org/wiki/Methods_of_computing_square_roots#Babylonian_method)
    function sqrt(uint256 y) internal pure returns (uint256 z) {
        if (y > 3) {
            z = y;
            uint256 x = y / 2 + 1;
            while (x < z) {
                z = x;
                x = (y / x + x) / 2;
            }
        } else if (y != 0) {
            z = 1;
        }
    }

    function getSwapAmt(uint256 amtA, uint256 resA)
        internal
        pure
        returns (uint256)
    {
        return
            sqrt(amtA.mul(resA.mul(3988000).add(amtA.mul(3988009))))
                .sub(amtA.mul(1997))
                .div(1994);
    }

    // https://blog.alphafinance.io/onesideduniswap/
    // https://github.com/AlphaFinanceLab/alphahomora/blob/88a8dfe4d4fa62b13b40f7983ee2c646f83e63b5/contracts/StrategyAddETHOnly.sol#L39
    // AlphaFinance is gripbook licensed
    function optimalOneSideSupply(
        IUniswapV2Pair pair,
        address from,
        address to
    ) public {
        address[] memory path = new address[](2);

        // 1. Compute optimal amount of WETH to be converted
        (uint256 r0, uint256 r1, ) = pair.getReserves();
        uint256 rIn = pair.token0() == from ? r0 : r1;
        uint256 aIn = getSwapAmt(rIn, IERC20(from).balanceOf(address(this)));

        // 2. Convert that from -> to
        path[0] = from;
        path[1] = to;

        IERC20(from).safeApprove(address(router), 0);
        IERC20(from).safeApprove(address(router), aIn);

        router.swapExactTokensForTokens(aIn, 0, path, address(this), now + 60);
    }

    function swapUniswap(address from, address to) public {
        require(to != address(0));

        address[] memory path;

        if (from == weth || to == weth) {
            path = new address[](2);
            path[0] = from;
            path[1] = to;
        } else {
            path = new address[](3);
            path[0] = from;
            path[1] = weth;
            path[2] = to;
        }

        uint256 amount = IERC20(from).balanceOf(address(this));

        IERC20(from).safeApprove(address(router), 0);
        IERC20(from).safeApprove(address(router), amount);
        router.swapExactTokensForTokens(
            amount,
            0,
            path,
            address(this),
            now + 60
        );
    }

    function removeLiquidity(IUniswapV2Pair pair) public {
        uint256 _balance = pair.balanceOf(address(this));
        pair.approve(address(router), _balance);

        router.removeLiquidity(
            pair.token0(),
            pair.token1(),
            _balance,
            0,
            0,
            address(this),
            now + 60
        );
    }

    function supplyLiquidity(
        address token0,
        address token1
    ) public returns (uint256) {
        // Add liquidity to uniswap
        IERC20(token0).safeApprove(address(router), 0);
        IERC20(token0).safeApprove(
            address(router),
            IERC20(token0).balanceOf(address(this))
        );

        IERC20(token1).safeApprove(address(router), 0);
        IERC20(token1).safeApprove(
            address(router),
            IERC20(token1).balanceOf(address(this))
        );

        (, , uint256 _to) = router.addLiquidity(
            token0,
            token1,
            IERC20(token0).balanceOf(address(this)),
            IERC20(token1).balanceOf(address(this)),
            0,
            0,
            address(this),
            now + 60
        );

        return _to;
    }

    function refundDust(IUniswapV2Pair pair, address recipient) public {
        address token0 = pair.token0();
        address token1 = pair.token1();

        IERC20(token0).safeTransfer(
            recipient,
            IERC20(token0).balanceOf(address(this))
        );
        IERC20(token1).safeTransfer(
            recipient,
            IERC20(token1).balanceOf(address(this))
        );
    }

    function lpTokensToPrimitive(
        IUniswapV2Pair from,
        address to
    ) public {
        if (from.token0() != weth && from.token1() != weth) {
            revert("!from-weth-pair");
        }

        address fromOther = from.token0() == weth ? from.token1() : from.token0();

        // Removes liquidity
        removeLiquidity(from);

        // Swap from WETH to other
        swapUniswap(weth, to);

        // If from is not to, we swap them too
        if (fromOther != to) {
            swapUniswap(fromOther, to);
        }
    }

    function primitiveToLpTokens(
        address from,
        IUniswapV2Pair to,
        address dustRecipient
    ) public {
        if (to.token0() != weth && to.token1() != weth) {
            revert("!to-weth-pair");
        }

        address toOther = to.token0() == weth ? to.token1() : to.token0();

        // Swap to WETH
        swapUniswap(from, weth);

        // Optimal supply from WETH to
        optimalOneSideSupply(to, weth, toOther);

        // Supply tokens
        supplyLiquidity(weth, toOther);

        // Dust
        refundDust(to, dustRecipient);
    }

    function swapUniLPTokens(
        IUniswapV2Pair from,
        IUniswapV2Pair to,
        address dustRecipient
    ) public {
        if (from.token0() != weth && from.token1() != weth) {
            revert("!from-weth-pair");
        }

        if (to.token0() != weth && to.token1() != weth) {
            revert("!to-weth-pair");
        }

        address fromOther = from.token0() == weth
            ? from.token1()
            : from.token0();

        address toOther = to.token0() == weth ? to.token1() : to.token0();

        // Remove weth-<token> pair
        removeLiquidity(from);

        // Swap <token> to WETH
        swapUniswap(fromOther, weth);

        // Optimal supply from WETH to <other-token>
        optimalOneSideSupply(to, weth, toOther);

        // Supply weth-<other-token> pair
        supplyLiquidity(weth, toOther);

        // Refund dust
        refundDust(to, dustRecipient);
    }
}

pragma solidity ^0.6.0;

interface Hevm {
    function warp(uint256) external;
    function roll(uint x) external;
    function store(address c, bytes32 loc, bytes32 val) external;
}

pragma solidity ^0.6.7;

import "../../lib/safe-math.sol";
import "../../lib/erc20.sol";

import "./hevm.sol";
import "./user.sol";
import "./test-approx.sol";

import "../../interfaces/usdt.sol";
import "../../interfaces/weth.sol";
import "../../interfaces/strategy.sol";
import "../../interfaces/curve.sol";
import "../../interfaces/uniswapv2.sol";

contract DSTestDefiBase is DSTestApprox {
    using SafeERC20 for IERC20;
    using SafeMath for uint256;

    address pickle = 0x429881672B9AE42b8EbA0E26cD9C73711b891Ca5;
    address burn = 0x000000000000000000000000000000000000dEaD;

    address susdv2_deposit = 0xFCBa3E75865d2d561BE8D220616520c171F12851;

    address susdv2_pool = 0xA5407eAE9Ba41422680e2e00537571bcC53efBfD;
    address three_pool = 0xbEbc44782C7dB0a1A60Cb6fe97d0b483032FF1C7;
    address ren_pool = 0x93054188d876f558f4a66B2EF1d97d16eDf0895B;

    address scrv = 0xC25a3A3b969415c80451098fa907EC722572917F;
    address three_crv = 0x6c3F90f043a72FA612cbac8115EE7e52BDe6E490;
    address ren_crv = 0x49849C98ae39Fff122806C06791Fa73784FB3675;

    address eth = 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE;
    address weth = 0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2;
    address crv = 0xD533a949740bb3306d119CC777fa900bA034cd52;
    address snx = 0xC011a73ee8576Fb46F5E1c5751cA3B9Fe0af2a6F;
    address dai = 0x6B175474E89094C44Da98b954EedeAC495271d0F;
    address usdc = 0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48;
    address usdt = 0xdAC17F958D2ee523a2206206994597C13D831ec7;
    address susd = 0x57Ab1ec28D129707052df4dF418D58a2D46d5f51;
    address uni = 0x1f9840a85d5aF5bf1D1762F925BDADdC4201F984;

    address wbtc = 0x2260FAC5E5542a773Aa44fBCfeDf7C193bc2C599;
    address renbtc = 0xEB4C2781e4ebA804CE9a9803C67d0893436bB27D;

    Hevm hevm = Hevm(0x7109709ECfa91a80626fF3989D68f67F5b1DD12D);

    UniswapRouterV2 univ2 = UniswapRouterV2(
        0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D
    );

    IUniswapV2Factory univ2Factory = IUniswapV2Factory(
        0x5C69bEe701ef814a2B6a3EDD4B1652CB9cc5aA6f
    );

    ICurveFi_4 curveSusdV2 = ICurveFi_4(
        0xA5407eAE9Ba41422680e2e00537571bcC53efBfD
    );

    uint256 startTime = block.timestamp;

    receive() external payable {}
    fallback () external payable {}

    function _swap(
        address _from,
        address _to,
        uint256 _amount
    ) internal {
        address[] memory path;

        if (_from == eth || _from == weth) {
            path = new address[](2);
            path[0] = weth;
            path[1] = _to;

            univ2.swapExactETHForTokens{value: _amount}(
                0,
                path,
                address(this),
                now + 60
            );
        } else {
            path = new address[](3);
            path[0] = _from;
            path[1] = weth;
            path[2] = _to;

            IERC20(_from).safeApprove(address(univ2), 0);
            IERC20(_from).safeApprove(address(univ2), _amount);

            univ2.swapExactTokensForTokens(
                _amount,
                0,
                path,
                address(this),
                now + 60
            );
        }
    }

    function _getERC20(address token, uint256 _amount) internal {
        address[] memory path = new address[](2);
        path[0] = weth;
        path[1] = token;

        uint256[] memory ins = univ2.getAmountsIn(_amount, path);
        uint256 ethAmount = ins[0];

        univ2.swapETHForExactTokens{value: ethAmount}(
            _amount,
            path,
            address(this),
            now + 60
        );
    }

    function _getERC20WithETH(address token, uint256 _ethAmount) internal {
        address[] memory path = new address[](2);
        path[0] = weth;
        path[1] = token;

        univ2.swapExactETHForTokens{value: _ethAmount}(
            0,
            path,
            address(this),
            now + 60
        );
    }

    function _getUniV2LPToken(address lpToken, uint256 _ethAmount) internal {
        address token0 = IUniswapV2Pair(lpToken).token0();
        address token1 = IUniswapV2Pair(lpToken).token1();

        if (token0 != weth) {
            _getERC20WithETH(token0, _ethAmount.div(2));
        } else {
            WETH(weth).deposit{value: _ethAmount.div(2)}();
        }

        if (token1 != weth) {
            _getERC20WithETH(token1, _ethAmount.div(2));
        } else {
            WETH(weth).deposit{value: _ethAmount.div(2)}();
        }

        IERC20(token0).safeApprove(address(univ2), uint256(0));
        IERC20(token0).safeApprove(address(univ2), uint256(-1));

        IERC20(token1).safeApprove(address(univ2), uint256(0));
        IERC20(token1).safeApprove(address(univ2), uint256(-1));
        univ2.addLiquidity(
            token0,
            token1,
            IERC20(token0).balanceOf(address(this)),
            IERC20(token1).balanceOf(address(this)),
            0,
            0,
            address(this),
            now + 60
        );
    }

    function _getUniV2LPToken(
        address token0,
        address token1,
        uint256 _ethAmount
    ) internal {
        _getUniV2LPToken(univ2Factory.getPair(token0, token1), _ethAmount);
    }

    function _getFunctionSig(string memory sig) internal pure returns (bytes4) {
        return bytes4(keccak256(bytes(sig)));
    }

    function _getDynamicArray(address payable one)
        internal
        pure
        returns (address payable[] memory)
    {
        address payable[] memory targets = new address payable[](1);
        targets[0] = one;

        return targets;
    }

    function _getDynamicArray(bytes memory one)
        internal
        pure
        returns (bytes[] memory)
    {
        bytes[] memory data = new bytes[](1);
        data[0] = one;

        return data;
    }

    function _getDynamicArray(address payable one, address payable two)
        internal
        pure
        returns (address payable[] memory)
    {
        address payable[] memory targets = new address payable[](2);
        targets[0] = one;
        targets[1] = two;

        return targets;
    }

    function _getDynamicArray(bytes memory one, bytes memory two)
        internal
        pure
        returns (bytes[] memory)
    {
        bytes[] memory data = new bytes[](2);
        data[0] = one;
        data[1] = two;

        return data;
    }

    function _getDynamicArray(
        address payable one,
        address payable two,
        address payable three
    ) internal pure returns (address payable[] memory) {
        address payable[] memory targets = new address payable[](3);
        targets[0] = one;
        targets[1] = two;
        targets[2] = three;

        return targets;
    }

    function _getDynamicArray(
        bytes memory one,
        bytes memory two,
        bytes memory three
    ) internal pure returns (bytes[] memory) {
        bytes[] memory data = new bytes[](3);
        data[0] = one;
        data[1] = two;
        data[2] = three;

        return data;
    }
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.6.7;

import "../lib/hevm.sol";
import "../lib/user.sol";
import "../lib/test-approx.sol";
import "../lib/test-defi-base.sol";

import "../../interfaces/strategy.sol";
import "../../interfaces/curve.sol";
import "../../interfaces/uniswapv2.sol";

import "../../pickle-jar.sol";
import "../../controller-v4.sol";

contract StrategyCurveFarmTestBase is DSTestDefiBase {
    address governance;
    address strategist;
    address timelock;

    address devfund;
    address treasury;

    address want;

    PickleJar pickleJar;
    ControllerV4 controller;
    IStrategy strategy;

    // **** Tests ****

    function _test_withdraw() internal {
        uint256 _want = IERC20(want).balanceOf(address(this));
        IERC20(want).approve(address(pickleJar), _want);
        pickleJar.deposit(_want);

        // Deposits to strategy
        pickleJar.earn();

        // Fast forwards
        hevm.warp(block.timestamp + 1 weeks);

        strategy.harvest();

        // Withdraws back to pickleJar
        uint256 _before = IERC20(want).balanceOf(address(pickleJar));
        controller.withdrawAll(want);
        uint256 _after = IERC20(want).balanceOf(address(pickleJar));

        assertTrue(_after > _before);

        _before = IERC20(want).balanceOf(address(this));
        pickleJar.withdrawAll();
        _after = IERC20(want).balanceOf(address(this));

        assertTrue(_after > _before);

        // Gained some interest
        assertTrue(_after > _want);
    }

    function _test_get_earn_harvest_rewards() internal {
        uint256 _want = IERC20(want).balanceOf(address(this));
        IERC20(want).approve(address(pickleJar), _want);
        pickleJar.deposit(_want);
        pickleJar.earn();

        // Fast forward one week
        hevm.warp(block.timestamp + 1 weeks);

        // Call the harvest function
        uint256 _before = pickleJar.balance();
        uint256 _treasuryBefore = IERC20(want).balanceOf(treasury);
        strategy.harvest();
        uint256 _after = pickleJar.balance();
        uint256 _treasuryAfter = IERC20(want).balanceOf(treasury);

        uint256 earned = _after.sub(_before).mul(1000).div(955);
        uint256 earnedRewards = earned.mul(45).div(1000); // 4.5%
        uint256 actualRewardsEarned = _treasuryAfter.sub(_treasuryBefore);

        // 4.5% performance fee is given
        assertEqApprox(earnedRewards, actualRewardsEarned);

        // Withdraw
        uint256 _devBefore = IERC20(want).balanceOf(devfund);
        _treasuryBefore = IERC20(want).balanceOf(treasury);
        uint256 _stratBal = strategy.balanceOf();
        pickleJar.withdrawAll();
        uint256 _devAfter = IERC20(want).balanceOf(devfund);
        _treasuryAfter = IERC20(want).balanceOf(treasury);

        // 0.175% goes to dev
        uint256 _devFund = _devAfter.sub(_devBefore);
        assertEq(_devFund, _stratBal.mul(175).div(100000));

        // 0.325% goes to treasury
        uint256 _treasuryFund = _treasuryAfter.sub(_treasuryBefore);
        assertEq(_treasuryFund, _stratBal.mul(325).div(100000));
    }
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.6.0;

// Contract account to simulate another user
contract User {
    function execute(
        address target,
        uint256 value,
        string memory signature,
        bytes memory data
    ) public payable returns (bytes memory) {
        bytes memory callData;

        if (bytes(signature).length == 0) {
            callData = data;
        } else {
            callData = abi.encodePacked(
                bytes4(keccak256(bytes(signature))),
                data
            );
        }

        (bool success, bytes memory returnData) = target.call{value: value}(
            callData
        );
        require(success, "!user-execute");

        return returnData;
    }
}

pragma solidity ^0.6.7;

import "./test.sol";

contract DSTestApprox is DSTest {
    function assertEqApprox(uint256 a, uint256 b) internal {
        if (a == 0 && b == 0) {
            return;
        }

        // +/- 5%
        uint256 bMax = (b * 105) / 100;
        uint256 bMin = (b * 95) / 100;

        if (!(a > bMin && a < bMax)) {
            emit log_bytes32("Error: Wrong `a-uint` value!");
            emit log_named_uint("  Expected", b);
            emit log_named_uint("    Actual", a);
            fail();
        }
    }

    function assertEqVerbose(bool a, bytes memory b) internal {
        if (!a) {
            emit log_bytes32("Error: assertion error!");
            emit logs(b);
            fail();
        }
    }
}

pragma solidity ^0.6.7;

import "../lib/hevm.sol";
import "../lib/user.sol";
import "../lib/test-approx.sol";
import "../lib/test-defi-base.sol";

import "../../interfaces/strategy.sol";
import "../../interfaces/curve.sol";
import "../../interfaces/uniswapv2.sol";

import "../../pickle-jar.sol";
import "../../controller-v4.sol";

contract StrategyUniFarmTestBase is DSTestDefiBase {
    address want;
    address token1;

    address governance;
    address strategist;
    address timelock;

    address devfund;
    address treasury;

    PickleJar pickleJar;
    ControllerV4 controller;
    IStrategy strategy;

    function _getWant(uint256 ethAmount, uint256 amount) internal {
        _getERC20(token1, amount);

        uint256 _token1 = IERC20(token1).balanceOf(address(this));

        IERC20(token1).safeApprove(address(univ2), 0);
        IERC20(token1).safeApprove(address(univ2), _token1);

        univ2.addLiquidityETH{value: ethAmount}(
            token1,
            _token1,
            0,
            0,
            address(this),
            now + 60
        );
    }

    // **** Tests ****

    function _test_timelock() internal {
        assertTrue(strategy.timelock() == timelock);
        strategy.setTimelock(address(1));
        assertTrue(strategy.timelock() == address(1));
    }

    function _test_withdraw_release() internal {
        uint256 decimals = ERC20(token1).decimals();
        _getWant(10 ether, 4000 * (10**decimals));
        uint256 _want = IERC20(want).balanceOf(address(this));
        IERC20(want).safeApprove(address(pickleJar), 0);
        IERC20(want).safeApprove(address(pickleJar), _want);
        pickleJar.deposit(_want);
        pickleJar.earn();
        hevm.warp(block.timestamp + 1 weeks);
        strategy.harvest();

        // Checking withdraw
        uint256 _before = IERC20(want).balanceOf(address(pickleJar));
        controller.withdrawAll(want);
        uint256 _after = IERC20(want).balanceOf(address(pickleJar));
        assertTrue(_after > _before);
        _before = IERC20(want).balanceOf(address(this));
        pickleJar.withdrawAll();
        _after = IERC20(want).balanceOf(address(this));
        assertTrue(_after > _before);

        // Check if we gained interest
        assertTrue(_after > _want);
    }

    function _test_get_earn_harvest_rewards() internal {
        uint256 decimals = ERC20(token1).decimals();
        _getWant(10 ether, 4000 * (10**decimals));
        uint256 _want = IERC20(want).balanceOf(address(this));
        IERC20(want).safeApprove(address(pickleJar), 0);
        IERC20(want).safeApprove(address(pickleJar), _want);
        pickleJar.deposit(_want);
        pickleJar.earn();
        hevm.warp(block.timestamp + 1 weeks);

        // Call the harvest function
        uint256 _before = pickleJar.balance();
        uint256 _treasuryBefore = IERC20(want).balanceOf(treasury);
        strategy.harvest();
        uint256 _after = pickleJar.balance();
        uint256 _treasuryAfter = IERC20(want).balanceOf(treasury);

        uint256 earned = _after.sub(_before).mul(1000).div(955);
        uint256 earnedRewards = earned.mul(45).div(1000); // 4.5%
        uint256 actualRewardsEarned = _treasuryAfter.sub(_treasuryBefore);

        // 4.5% performance fee is given
        assertEqApprox(earnedRewards, actualRewardsEarned);

        // Withdraw
        uint256 _devBefore = IERC20(want).balanceOf(devfund);
        _treasuryBefore = IERC20(want).balanceOf(treasury);
        uint256 _stratBal = strategy.balanceOf();
        pickleJar.withdrawAll();
        uint256 _devAfter = IERC20(want).balanceOf(devfund);
        _treasuryAfter = IERC20(want).balanceOf(treasury);

        // 0.175% goes to dev
        uint256 _devFund = _devAfter.sub(_devBefore);
        assertEq(_devFund, _stratBal.mul(175).div(100000));

        // 0.325% goes to treasury
        uint256 _treasuryFund = _treasuryAfter.sub(_treasuryBefore);
        assertEq(_treasuryFund, _stratBal.mul(325).div(100000));
    }
}

// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.

// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.

// You should have received a copy of the GNU General Public License
// along with this program.  If not, see <http://www.gnu.org/licenses/>.

pragma solidity >=0.4.23;

contract DSTest {
    event eventListener          (address target, bool exact);
    event logs                   (bytes);
    event log_bytes32            (bytes32);
    event log_named_address      (bytes32 key, address val);
    event log_named_bytes32      (bytes32 key, bytes32 val);
    event log_named_decimal_int  (bytes32 key, int val, uint decimals);
    event log_named_decimal_uint (bytes32 key, uint val, uint decimals);
    event log_named_int          (bytes32 key, int val);
    event log_named_uint         (bytes32 key, uint val);
    event log_named_string       (bytes32 key, string val);

    bool public IS_TEST;
    bool public failed;

    constructor() internal {
        IS_TEST = true;
    }

    function fail() internal {
        failed = true;
    }

    function expectEventsExact(address target) internal {
        emit eventListener(target, true);
    }

    modifier logs_gas() {
        uint startGas = gasleft();
        _;
        uint endGas = gasleft();
        emit log_named_uint("gas", startGas - endGas);
    }

    function assertTrue(bool condition) internal {
        if (!condition) {
            emit log_bytes32("Assertion failed");
            fail();
        }
    }

    function assertEq(address a, address b) internal {
        if (a != b) {
            emit log_bytes32("Error: Wrong `address' value");
            emit log_named_address("  Expected", b);
            emit log_named_address("    Actual", a);
            fail();
        }
    }

    function assertEq32(bytes32 a, bytes32 b) internal {
        assertEq(a, b);
    }

    function assertEq(bytes32 a, bytes32 b) internal {
        if (a != b) {
            emit log_bytes32("Error: Wrong `bytes32' value");
            emit log_named_bytes32("  Expected", b);
            emit log_named_bytes32("    Actual", a);
            fail();
        }
    }

    function assertEqDecimal(int a, int b, uint decimals) internal {
        if (a != b) {
            emit log_bytes32("Error: Wrong fixed-point decimal");
            emit log_named_decimal_int("  Expected", b, decimals);
            emit log_named_decimal_int("    Actual", a, decimals);
            fail();
        }
    }

    function assertEqDecimal(uint a, uint b, uint decimals) internal {
        if (a != b) {
            emit log_bytes32("Error: Wrong fixed-point decimal");
            emit log_named_decimal_uint("  Expected", b, decimals);
            emit log_named_decimal_uint("    Actual", a, decimals);
            fail();
        }
    }

    function assertEq(int a, int b) internal {
        if (a != b) {
            emit log_bytes32("Error: Wrong `int' value");
            emit log_named_int("  Expected", b);
            emit log_named_int("    Actual", a);
            fail();
        }
    }

    function assertEq(uint a, uint b) internal {
        if (a != b) {
            emit log_bytes32("Error: Wrong `uint' value");
            emit log_named_uint("  Expected", b);
            emit log_named_uint("    Actual", a);
            fail();
        }
    }

    function assertEq(string memory a, string memory b) internal {
        if (keccak256(abi.encodePacked(a)) != keccak256(abi.encodePacked(b))) {
            emit log_bytes32("Error: Wrong `string' value");
            emit log_named_string("  Expected", b);
            emit log_named_string("    Actual", a);
            fail();
        }
    }

    function assertEq0(bytes memory a, bytes memory b) internal {
        bool ok = true;

        if (a.length == b.length) {
            for (uint i = 0; i < a.length; i++) {
                if (a[i] != b[i]) {
                    ok = false;
                }
            }
        } else {
            ok = false;
        }

        if (!ok) {
            emit log_bytes32("Error: Wrong `bytes' value");
            emit log_named_bytes32("  Expected", "[cannot show `bytes' value]");
            emit log_named_bytes32("  Actual", "[cannot show `bytes' value]");
            fail();
        }
    }
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.6.0;

import "../../lib/erc20.sol";

contract MockERC20 is ERC20 {
    constructor(string memory name, string memory symbol)
        public
        ERC20(name, symbol)
    {}

    function mint(address recipient, uint256 amount) public {
        _mint(recipient, amount);
    }
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.6.7;

import "./lib/test-defi-base.sol";
import "../lib/safe-math.sol";

import "../pickle-swap.sol";

contract PickleSwapTest is DSTestDefiBase {
    PickleSwap pickleSwap;

    function setUp() public {
        pickleSwap = new PickleSwap();
    }

    function _test_uni_lp_swap(address lp1, address lp2) internal {
        _getUniV2LPToken(lp1, 20 ether);
        uint256 _balance = IERC20(lp1).balanceOf(address(this));

        uint256 _before = IERC20(lp2).balanceOf(address(this));
        IERC20(lp1).safeIncreaseAllowance(address(pickleSwap), _balance);
        pickleSwap.convertWETHPair(lp1, lp2, _balance);
        uint256 _after = IERC20(lp2).balanceOf(address(this));

        assertTrue(_after > _before);
        assertTrue(_after > 0);
    }

    function test_pickleswap_dai_usdc() public {
        _test_uni_lp_swap(
            univ2Factory.getPair(weth, dai),
            univ2Factory.getPair(weth, usdc)
        );
    }

    function test_pickleswap_dai_usdt() public {
        _test_uni_lp_swap(
            univ2Factory.getPair(weth, dai),
            univ2Factory.getPair(weth, usdt)
        );
    }

    function test_pickleswap_usdt_susd() public {
        _test_uni_lp_swap(
            univ2Factory.getPair(weth, usdt),
            univ2Factory.getPair(weth, susd)
        );
    }
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.6.7;

import "./lib/test-defi-base.sol";
import "../lib/safe-math.sol";

import "../uni-curve-converter.sol";

contract UniCurveConverterTest is DSTestDefiBase {
    UniCurveConverter uniCurveConverter;

    function setUp() public {
        uniCurveConverter = new UniCurveConverter();
    }

    function _test_uni_curve_converter(address token0, address token1)
        internal
    {
        address lp = univ2Factory.getPair(token0, token1);
        _getUniV2LPToken(lp, 100 ether);

        uint256 _balance = IERC20(lp).balanceOf(address(this));

        IERC20(lp).safeApprove(address(uniCurveConverter), 0);
        IERC20(lp).safeApprove(address(uniCurveConverter), uint256(-1));

        uint256 _before = IERC20(scrv).balanceOf(address(this));
        uniCurveConverter.convert(lp, _balance);
        uint256 _after = IERC20(scrv).balanceOf(address(this));

        // Gets scrv
        assertTrue(_after > _before);
        assertTrue(_after > 0);

        // No token left behind in router
        assertEq(IERC20(token0).balanceOf(address(uniCurveConverter)), 0);
        assertEq(IERC20(token1).balanceOf(address(uniCurveConverter)), 0);
        assertEq(IERC20(weth).balanceOf(address(uniCurveConverter)), 0);

        assertEq(IERC20(dai).balanceOf(address(uniCurveConverter)), 0);
        assertEq(IERC20(usdc).balanceOf(address(uniCurveConverter)), 0);
        assertEq(IERC20(usdt).balanceOf(address(uniCurveConverter)), 0);
        assertEq(IERC20(susd).balanceOf(address(uniCurveConverter)), 0);
    }

    function test_uni_curve_convert_dai_weth() public {
        _test_uni_curve_converter(dai, weth);
    }

    function test_uni_curve_convert_usdt_weth() public {
        _test_uni_curve_converter(usdt, weth);
    }

    function test_uni_curve_convert_wbtc_weth() public {
        _test_uni_curve_converter(wbtc, weth);
    }
}

pragma solidity ^0.6.7;



import "../../lib/hevm.sol";
import "../../lib/user.sol";
import "../../lib/test-approx.sol";
import "../../lib/test-defi-base.sol";

import "../../../interfaces/strategy.sol";
import "../../../interfaces/curve.sol";
import "../../../interfaces/uniswapv2.sol";

import "../../../pickle-jar.sol";
import "../../../controller-v4.sol";

import "../../../strategies/curve/strategy-curve-scrv-v4_1.sol";
import "../../../strategies/curve/scrv-voter.sol";
import "../../../strategies/curve/crv-locker.sol";

contract StrategyCurveSCRVv4Test is DSTestDefiBase {
    address escrow = 0x5f3b5DfEb7B28CDbD7FAba78963EE202a494e2A2;
    address curveSmartContractChecker = 0xca719728Ef172d0961768581fdF35CB116e0B7a4;

    address governance;
    address strategist;
    address timelock;
    address devfund;
    address treasury;

    PickleJar pickleJar;
    ControllerV4 controller;
    StrategyCurveSCRVv4_1 strategy;
    SCRVVoter scrvVoter;
    CRVLocker crvLocker;

    function setUp() public {
        governance = address(this);
        strategist = address(new User());
        timelock = address(this);
        devfund = address(new User());
        treasury = address(new User());

        controller = new ControllerV4(
            governance,
            strategist,
            timelock,
            devfund,
            treasury
        );

        crvLocker = new CRVLocker(governance);

        scrvVoter = new SCRVVoter(governance, address(crvLocker));

        strategy = new StrategyCurveSCRVv4_1(
            address(scrvVoter),
            address(crvLocker),
            governance,
            strategist,
            address(controller),
            timelock
        );

        pickleJar = new PickleJar(
            strategy.want(),
            governance,
            timelock,
            address(controller)
        );

        controller.setJar(strategy.want(), address(pickleJar));
        controller.approveStrategy(strategy.want(), address(strategy));
        controller.setStrategy(strategy.want(), address(strategy));

        scrvVoter.approveStrategy(address(strategy));
        scrvVoter.approveStrategy(governance);
        crvLocker.addVoter(address(scrvVoter));

        hevm.warp(startTime);

        // Approve our strategy on smartContractWhitelist
        // Modify storage value so we are approved by the smart-wallet-white-list
        // storage in solidity - https://ethereum.stackexchange.com/a/41304
        bytes32 key = bytes32(uint256(address(crvLocker)));
        bytes32 pos = bytes32(0); // pos 0 as its the first state variable
        bytes32 loc = keccak256(abi.encodePacked(key, pos));
        hevm.store(curveSmartContractChecker, loc, bytes32(uint256(1)));

        // Make sure our crvLocker is whitelisted
        assertTrue(
            ICurveSmartContractChecker(curveSmartContractChecker).wallets(
                address(crvLocker)
            )
        );
    }

    function _getSCRV(uint256 daiAmount) internal {
        _getERC20(dai, daiAmount);
        uint256[4] memory liquidity;
        liquidity[0] = IERC20(dai).balanceOf(address(this));
        IERC20(dai).approve(susdv2_pool, liquidity[0]);
        ICurveFi_4(susdv2_pool).add_liquidity(liquidity, 0);
    }

    // **** Tests ****

    function test_scrv_v4_1_withdraw() public {
        _getSCRV(10000000 ether); // 1 million DAI
        uint256 _scrv = IERC20(scrv).balanceOf(address(this));
        IERC20(scrv).approve(address(pickleJar), _scrv);
        pickleJar.deposit(_scrv);

        // Deposits to strategy
        pickleJar.earn();

        // Fast forwards
        hevm.warp(block.timestamp + 1 weeks);

        strategy.harvest();

        // Withdraws back to pickleJar
        uint256 _before = IERC20(scrv).balanceOf(address(pickleJar));
        controller.withdrawAll(scrv);
        uint256 _after = IERC20(scrv).balanceOf(address(pickleJar));

        assertTrue(_after > _before);

        _before = IERC20(scrv).balanceOf(address(this));
        pickleJar.withdrawAll();
        _after = IERC20(scrv).balanceOf(address(this));

        assertTrue(_after > _before);

        // Gained some interest
        assertTrue(_after > _scrv);
    }

    function test_scrv_v4_1_get_earn_harvest_rewards() public {
        address dev = controller.devfund();

        // Deposit sCRV, and earn
        _getSCRV(10000000 ether); // 1 million DAI
        uint256 _scrv = IERC20(scrv).balanceOf(address(this));
        IERC20(scrv).approve(address(pickleJar), _scrv);
        pickleJar.deposit(_scrv);
        pickleJar.earn();

        // Fast forward one week
        hevm.warp(block.timestamp + 1 weeks);

        // Call the harvest function
        uint256 _before = pickleJar.balance();
        uint256 _rewardsBefore = IERC20(scrv).balanceOf(treasury);
        User(strategist).execute(address(strategy), 0, "harvest()", "");
        uint256 _after = pickleJar.balance();
        uint256 _rewardsAfter = IERC20(scrv).balanceOf(treasury);

        uint256 earned = _after.sub(_before).mul(1000).div(955);
        uint256 earnedRewards = earned.mul(45).div(1000); // 4.5%
        uint256 actualRewardsEarned = _rewardsAfter.sub(_rewardsBefore);

        // 4.5% performance fee is given
        assertEqApprox(earnedRewards, actualRewardsEarned);

        // Withdraw
        uint256 _devBefore = IERC20(scrv).balanceOf(dev);
        uint256 _stratBal = strategy.balanceOf();
        pickleJar.withdrawAll();
        uint256 _devAfter = IERC20(scrv).balanceOf(dev);

        // 0.175% goes to dev
        uint256 _devFund = _devAfter.sub(_devBefore);
        assertEq(_devFund, _stratBal.mul(175).div(100000));
    }

    function test_scrv_v4_1_lock() public {
        // Deposit sCRV, and earn
        _getSCRV(10000000 ether); // 1 million DAI
        uint256 _scrv = IERC20(scrv).balanceOf(address(this));
        IERC20(scrv).approve(address(pickleJar), _scrv);
        pickleJar.deposit(_scrv);
        pickleJar.earn();

        // Fast forward one week
        hevm.warp(block.timestamp + 1 weeks);

        uint256 _before = IERC20(crv).balanceOf(address(crvLocker));
        // Call the harvest function
        strategy.harvest();
        // Make sure we can open lock
        uint256 _after = IERC20(crv).balanceOf(address(crvLocker));
        assertTrue(_after > _before);

        // Create a lock
        crvLocker.createLock(_after, block.timestamp + 5 weeks);

        // Harvest etc
        hevm.warp(block.timestamp + 1 weeks);
        strategy.harvest();

        // Increase amount
        crvLocker.increaseAmount(IERC20(crv).balanceOf(address(crvLocker)));

        // Increase unlockTime
        crvLocker.increaseUnlockTime(block.timestamp + 5 weeks);

        // Fast forward
        hevm.warp(block.timestamp + 5 weeks + 1 hours);

        // Withdraw
        _before = IERC20(crv).balanceOf(address(crvLocker));
        crvLocker.release();
        _after = IERC20(crv).balanceOf(address(crvLocker));
        assertTrue(_after > _before);
    }
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.6.7;



import "../../lib/hevm.sol";
import "../../lib/user.sol";
import "../../lib/test-approx.sol";
import "../../lib/test-defi-base.sol";
import "../../lib/test-strategy-curve-farm-base.sol";

import "../../../interfaces/strategy.sol";
import "../../../interfaces/curve.sol";
import "../../../interfaces/uniswapv2.sol";

import "../../../pickle-jar.sol";
import "../../../controller-v4.sol";

import "../../../strategies/curve/strategy-curve-scrv-v3_2.sol";

contract StrategyCurveSCRVv3_2Test is StrategyCurveFarmTestBase {
    function setUp() public {
        governance = address(this);
        strategist = address(this);
        devfund = address(new User());
        treasury = address(new User());
        timelock = address(this);

        want = scrv;

        controller = new ControllerV4(
            governance,
            strategist,
            timelock,
            devfund,
            treasury
        );

        strategy = IStrategy(
            address(
                new StrategyCurveSCRVv3_2(
                    governance,
                    strategist,
                    address(controller),
                    timelock
                )
            )
        );

        pickleJar = new PickleJar(
            strategy.want(),
            governance,
            timelock,
            address(controller)
        );

        controller.setJar(strategy.want(), address(pickleJar));
        controller.approveStrategy(strategy.want(), address(strategy));
        controller.setStrategy(strategy.want(), address(strategy));

        hevm.warp(startTime);

        _getWant(10000000 ether);
    }

    function _getWant(uint256 daiAmount) internal {
        _getERC20(dai, daiAmount);
        uint256[4] memory liquidity;
        liquidity[0] = IERC20(dai).balanceOf(address(this));
        IERC20(dai).approve(susdv2_pool, liquidity[0]);
        ICurveFi_4(susdv2_pool).add_liquidity(liquidity, 0);
    }

    // **** Tests **** //

    function test_scrv_v3_1_withdraw() public {
        _test_withdraw();
    }

    function test_scrv_v3_1_earn_harvest_rewards() public {
        _test_get_earn_harvest_rewards();
    }
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.6.7;



import "../../lib/hevm.sol";
import "../../lib/user.sol";
import "../../lib/test-approx.sol";
import "../../lib/test-defi-base.sol";
import "../../lib/test-strategy-curve-farm-base.sol";

import "../../../interfaces/strategy.sol";
import "../../../interfaces/curve.sol";
import "../../../interfaces/uniswapv2.sol";

import "../../../pickle-jar.sol";
import "../../../controller-v4.sol";

import "../../../strategies/curve/strategy-curve-3crv-v2.sol";

contract StrategyCurve3CRVv2Test is StrategyCurveFarmTestBase {
    function setUp() public {
        governance = address(this);
        strategist = address(this);
        devfund = address(new User());
        treasury = address(new User());
        timelock = address(this);

        want = three_crv;

        controller = new ControllerV4(
            governance,
            strategist,
            timelock,
            devfund,
            treasury
        );

        strategy = IStrategy(
            address(
                new StrategyCurve3CRVv2(
                    governance,
                    strategist,
                    address(controller),
                    timelock
                )
            )
        );

        pickleJar = new PickleJar(
            strategy.want(),
            governance,
            timelock,
            address(controller)
        );

        controller.setJar(strategy.want(), address(pickleJar));
        controller.approveStrategy(strategy.want(), address(strategy));
        controller.setStrategy(strategy.want(), address(strategy));

        hevm.warp(startTime);

        _getWant(10000000 ether);
    }

    function _getWant(uint256 daiAmount) internal {
        _getERC20(dai, daiAmount);
        uint256[3] memory liquidity;
        liquidity[0] = IERC20(dai).balanceOf(address(this));
        IERC20(dai).approve(three_pool, liquidity[0]);
        ICurveFi_3(three_pool).add_liquidity(liquidity, 0);
    }

    // **** Tests **** //

    function test_3crv_v1_withdraw() public {
        _test_withdraw();
    }

    function test_3crv_v1_earn_harvest_rewards() public {
        _test_get_earn_harvest_rewards();
    }
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.6.7;



import "../../lib/hevm.sol";
import "../../lib/user.sol";
import "../../lib/test-approx.sol";
import "../../lib/test-defi-base.sol";
import "../../lib/test-strategy-curve-farm-base.sol";

import "../../../interfaces/strategy.sol";
import "../../../interfaces/curve.sol";
import "../../../interfaces/uniswapv2.sol";

import "../../../pickle-jar.sol";
import "../../../controller-v4.sol";

import "../../../strategies/curve/strategy-curve-rencrv-v2.sol";

contract StrategyCurveRenCRVv2Test is StrategyCurveFarmTestBase {
    function setUp() public {
        governance = address(this);
        strategist = address(this);
        devfund = address(new User());
        treasury = address(new User());
        timelock = address(this);

        want = ren_crv;

        controller = new ControllerV4(
            governance,
            strategist,
            timelock,
            devfund,
            treasury
        );

        strategy = IStrategy(
            address(
                new StrategyCurveRenCRVv2(
                    governance,
                    strategist,
                    address(controller),
                    timelock
                )
            )
        );

        pickleJar = new PickleJar(
            strategy.want(),
            governance,
            timelock,
            address(controller)
        );

        controller.setJar(strategy.want(), address(pickleJar));
        controller.approveStrategy(strategy.want(), address(strategy));
        controller.setStrategy(strategy.want(), address(strategy));

        hevm.warp(startTime);

        _getWant(10e8); // 10 wbtc
    }

    function _getWant(uint256 btcAmount) internal {
        _getERC20(wbtc, btcAmount);
        uint256[2] memory liquidity;
        liquidity[1] = IERC20(wbtc).balanceOf(address(this));
        IERC20(wbtc).approve(ren_pool, liquidity[1]);
        ICurveFi_2(ren_pool).add_liquidity(liquidity, 0);
    }

    // **** Tests **** //

    function test_rencrv_v1_withdraw() public {
        _test_withdraw();
    }

    function test_rencrv_v1_earn_harvest_rewards() public {
        _test_get_earn_harvest_rewards();
    }
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.6.7;


import "../../lib/hevm.sol";
import "../../lib/user.sol";
import "../../lib/test-approx.sol";
import "../../lib/test-defi-base.sol";

import "../../../interfaces/compound.sol";

import "../../../pickle-jar.sol";
import "../../../controller-v4.sol";

import "../../../strategies/compound/strategy-cmpd-dai-v2.sol";

contract StrategyCmpndDaiV1 is DSTestDefiBase {
    StrategyCmpdDaiV2 strategy;
    ControllerV4 controller;
    PickleJar pickleJar;

    address governance;
    address strategist;
    address timelock;
    address devfund;
    address treasury;

    address want;

    function setUp() public {
        want = dai;

        governance = address(this);
        strategist = address(new User());
        timelock = address(this);
        devfund = address(new User());
        treasury = address(new User());

        controller = new ControllerV4(
            governance,
            strategist,
            timelock,
            devfund,
            treasury
        );

        strategy = new StrategyCmpdDaiV2(
            governance,
            strategist,
            address(controller),
            timelock
        );

        pickleJar = new PickleJar(
            strategy.want(),
            governance,
            timelock,
            address(controller)
        );

        controller.setJar(strategy.want(), address(pickleJar));
        controller.approveStrategy(strategy.want(), address(strategy));
        controller.setStrategy(strategy.want(), address(strategy));
    }

    function testFail_cmpnd_dai_v1_onlyKeeper_leverage() public {
        _getERC20(want, 100e18);
        uint256 _want = IERC20(want).balanceOf(address(this));
        IERC20(want).approve(address(pickleJar), _want);
        pickleJar.deposit(_want);

        User randomUser = new User();
        randomUser.execute(address(strategy), 0, "leverageToMax()", "");
    }

    function testFail_cmpnd_dai_v1_onlyKeeper_deleverage() public {
        _getERC20(want, 100e18);
        uint256 _want = IERC20(want).balanceOf(address(this));
        IERC20(want).approve(address(pickleJar), _want);
        pickleJar.deposit(_want);
        strategy.leverageToMax();

        User randomUser = new User();
        randomUser.execute(address(strategy), 0, "deleverageToMin()", "");
    }

    function test_cmpnd_dai_v1_comp_accrued() public {
        _getERC20(want, 1000000e18);
        uint256 _want = IERC20(want).balanceOf(address(this));
        IERC20(want).approve(address(pickleJar), _want);
        pickleJar.deposit(_want);
        pickleJar.earn();

        strategy.leverageToMax();

        uint256 compAccrued = strategy.getCompAccrued();

        assertEq(compAccrued, 0);

        hevm.warp(block.timestamp + 1 days);
        hevm.roll(block.number + 6171); // Roughly number of blocks per day

        compAccrued = strategy.getCompAccrued();
        assertTrue(compAccrued > 0);
    }

    function test_cmpnd_dai_v1_comp_sync() public {
        _getERC20(want, 1000000e18);
        uint256 _want = IERC20(want).balanceOf(address(this));
        IERC20(want).approve(address(pickleJar), _want);
        pickleJar.deposit(_want);
        pickleJar.earn();

        // Sets colFactor Buffer to be 3% (safeSync is 5%)
        strategy.setColFactorLeverageBuffer(30);
        strategy.leverageToMax();
        // Back to 10%
        strategy.setColFactorLeverageBuffer(100);

        uint256 colFactor = strategy.getColFactor();
        uint256 safeColFactor = strategy.getSafeLeverageColFactor();
        assertTrue(colFactor > safeColFactor);

        // Sync automatically fixes the colFactor for us
        bool shouldSync = strategy.sync();
        assertTrue(shouldSync);

        colFactor = strategy.getColFactor();
        assertEqApprox(colFactor, safeColFactor);

        shouldSync = strategy.sync();
        assertTrue(!shouldSync);
    }

    function test_cmpnd_dai_v1_leverage() public {
        _getERC20(want, 100e18);
        uint256 _want = IERC20(want).balanceOf(address(this));
        IERC20(want).approve(address(pickleJar), _want);
        pickleJar.deposit(_want);
        pickleJar.earn();

        uint256 _stratInitialBal = strategy.balanceOf();

        uint256 _beforeCR = strategy.getColFactor();
        uint256 _beforeLev = strategy.getCurrentLeverage();
        strategy.leverageToMax();
        uint256 _afterCR = strategy.getColFactor();
        uint256 _afterLev = strategy.getCurrentLeverage();
        uint256 _safeLeverageColFactor = strategy.getSafeLeverageColFactor();

        assertTrue(_afterCR > _beforeCR);
        assertTrue(_afterLev > _beforeLev);
        assertEqApprox(_safeLeverageColFactor, _afterCR);

        uint256 _maxLeverage = strategy.getMaxLeverage();
        assertTrue(_maxLeverage > 2e18); // Should be ~2.6, depending on colFactorLeverageBuffer

        uint256 leverageTarget = strategy.getLeveragedSupplyTarget(
            _stratInitialBal
        );
        uint256 leverageSupplied = strategy.getSupplied();
        assertEqApprox(
            leverageSupplied,
            _stratInitialBal.mul(_maxLeverage).div(1e18)
        );
        assertEqApprox(leverageSupplied, leverageTarget);

        uint256 unleveragedSupplied = strategy.getSuppliedUnleveraged();
        assertEqApprox(unleveragedSupplied, _stratInitialBal);
    }

    function test_cmpnd_dai_v1_deleverage() public {
        _getERC20(want, 100e18);
        uint256 _want = IERC20(want).balanceOf(address(this));
        IERC20(want).approve(address(pickleJar), _want);
        pickleJar.deposit(_want);
        pickleJar.earn();
        strategy.leverageToMax();

        uint256 _beforeCR = strategy.getColFactor();
        uint256 _beforeLev = strategy.getCurrentLeverage();
        strategy.deleverageToMin();
        uint256 _afterCR = strategy.getColFactor();
        uint256 _afterLev = strategy.getCurrentLeverage();

        assertTrue(_afterCR < _beforeCR);
        assertTrue(_afterLev < _beforeLev);
        assertEq(0, _afterCR); // 0 since we're not borrowing anything

        uint256 unleveragedSupplied = strategy.getSuppliedUnleveraged();
        uint256 supplied = strategy.getSupplied();
        assertEqApprox(unleveragedSupplied, supplied);
    }

    function test_cmpnd_dai_v1_withdrawSome() public {
        _getERC20(want, 100e18);
        uint256 _want = IERC20(want).balanceOf(address(this));
        IERC20(want).approve(address(pickleJar), _want);
        pickleJar.deposit(_want);
        pickleJar.earn();
        strategy.leverageToMax();

        uint256 _before = IERC20(want).balanceOf(address(this));
        pickleJar.withdraw(25e18);
        uint256 _after = IERC20(want).balanceOf(address(this));

        assertTrue(_after > _before);
        assertEqApprox(_after.sub(_before), 25e18);

        _before = IERC20(want).balanceOf(address(this));
        pickleJar.withdraw(10e18);
        _after = IERC20(want).balanceOf(address(this));

        assertTrue(_after > _before);
        assertEqApprox(_after.sub(_before), 10e18);

        _before = IERC20(want).balanceOf(address(this));
        pickleJar.withdraw(30e18);
        _after = IERC20(want).balanceOf(address(this));

        assertTrue(_after > _before);
        assertEqApprox(_after.sub(_before), 30e18);

        // Make sure we're still leveraging
        uint256 _leverage = strategy.getCurrentLeverage();
        assertTrue(_leverage > 1e18);
    }

    function test_cmpnd_dai_v1_withdrawAll() public {
        _getERC20(want, 100e18);

        uint256 _want = IERC20(want).balanceOf(address(this));
        IERC20(want).approve(address(pickleJar), _want);
        pickleJar.deposit(_want);
        pickleJar.earn();

        strategy.leverageToMax();

        hevm.warp(block.timestamp + 1 days);
        hevm.roll(block.number + 6171); // Roughly number of blocks per day

        strategy.harvest();

        // Withdraws back to pickleJar
        uint256 _before = IERC20(want).balanceOf(address(pickleJar));
        controller.withdrawAll(want);
        uint256 _after = IERC20(want).balanceOf(address(pickleJar));

        assertTrue(_after > _before);

        _before = IERC20(want).balanceOf(address(this));
        pickleJar.withdrawAll();
        _after = IERC20(want).balanceOf(address(this));

        assertTrue(_after > _before);

        // Gained some interest
        assertTrue(_after > _want);
    }

    function test_cmpnd_dai_v1_earn_harvest_rewards() public {
        _getERC20(want, 100e18);

        uint256 _want = IERC20(want).balanceOf(address(this));
        IERC20(want).approve(address(pickleJar), _want);
        pickleJar.deposit(_want);
        pickleJar.earn();

        // Fast forward one week
        hevm.warp(block.timestamp + 1 days);
        hevm.roll(block.number + 6171); // Roughly number of blocks per day

        // Call the harvest function
        uint256 _before = strategy.getSupplied();
        uint256 _treasuryBefore = IERC20(want).balanceOf(treasury);
        strategy.harvest();
        uint256 _after = strategy.getSupplied();
        uint256 _treasuryAfter = IERC20(want).balanceOf(treasury);

        uint256 earned = _after.sub(_before).mul(1000).div(955);
        uint256 earnedRewards = earned.mul(45).div(1000); // 4.5%
        uint256 actualRewardsEarned = _treasuryAfter.sub(_treasuryBefore);

        // 4.5% performance fee is given
        assertEqApprox(earnedRewards, actualRewardsEarned);

        // Withdraw
        uint256 _devBefore = IERC20(want).balanceOf(devfund);
        _treasuryBefore = IERC20(want).balanceOf(treasury);
        uint256 _stratBal = strategy.balanceOf();
        pickleJar.withdrawAll();
        uint256 _devAfter = IERC20(want).balanceOf(devfund);
        _treasuryAfter = IERC20(want).balanceOf(treasury);

        // 0.175% goes to dev
        uint256 _devFund = _devAfter.sub(_devBefore);
        assertEq(_devFund, _stratBal.mul(175).div(100000));

        // 0.325% goes to treasury
        uint256 _treasuryFund = _treasuryAfter.sub(_treasuryBefore);
        assertEq(_treasuryFund, _stratBal.mul(325).div(100000));
    }

    function test_cmpnd_dai_v1_functions() public {
        _getERC20(want, 100e18);

        uint256 _want = IERC20(want).balanceOf(address(this));
        IERC20(want).approve(address(pickleJar), _want);
        pickleJar.deposit(_want);
        pickleJar.earn();

        uint256 initialSupplied = strategy.getSupplied();
        uint256 initialBorrowed = strategy.getBorrowed();
        uint256 initialBorrowable = strategy.getBorrowable();
        uint256 marketColFactor = strategy.getMarketColFactor();
        uint256 maxLeverage = strategy.getMaxLeverage();

        // Earn deposits 95% into strategy
        assertEqApprox(initialSupplied, 95e18);
        assertEqApprox(
            initialBorrowable,
            initialSupplied.mul(marketColFactor).div(1e18)
        );
        assertEqApprox(initialBorrowed, 0);

        // Leverage to Max
        strategy.leverageToMax();

        uint256 supplied = strategy.getSupplied();
        uint256 borrowed = strategy.getBorrowed();
        uint256 borrowable = strategy.getBorrowable();
        uint256 currentColFactor = strategy.getColFactor();
        uint256 safeLeverageColFactor = strategy.getSafeLeverageColFactor();

        assertEqApprox(supplied, initialSupplied.mul(maxLeverage).div(1e18));
        assertEqApprox(borrowed, supplied.mul(safeLeverageColFactor).div(1e18));
        assertEqApprox(
            borrowable,
            supplied.mul(marketColFactor.sub(currentColFactor)).div(1e18)
        );
        assertEqApprox(currentColFactor, safeLeverageColFactor);
        assertTrue(marketColFactor > currentColFactor);
        assertTrue(marketColFactor > safeLeverageColFactor);

        // Deleverage
        strategy.deleverageToMin();

        uint256 deleverageSupplied = strategy.getSupplied();
        uint256 deleverageBorrowed = strategy.getBorrowed();
        uint256 deleverageBorrowable = strategy.getBorrowable();

        assertEqApprox(deleverageSupplied, initialSupplied);
        assertEqApprox(deleverageBorrowed, initialBorrowed);
        assertEqApprox(deleverageBorrowable, initialBorrowable);
    }

    function test_cmpnd_dai_v1_deleverage_stepping() public {
        _getERC20(want, 100e18);
        uint256 _want = IERC20(want).balanceOf(address(this));
        IERC20(want).approve(address(pickleJar), _want);
        pickleJar.deposit(_want);
        pickleJar.earn();
        strategy.leverageToMax();

        strategy.deleverageUntil(200e18);
        uint256 supplied = strategy.getSupplied();
        assertEqApprox(supplied, 200e18);

        strategy.deleverageUntil(180e18);
        supplied = strategy.getSupplied();
        assertEqApprox(supplied, 180e18);

        strategy.deleverageUntil(120e18);
        supplied = strategy.getSupplied();
        assertEqApprox(supplied, 120e18);
    }
}

pragma solidity ^0.6.7;



import "../../lib/test-strategy-uni-farm-base.sol";

import "../../../interfaces/strategy.sol";
import "../../../interfaces/curve.sol";
import "../../../interfaces/uniswapv2.sol";

import "../../../pickle-jar.sol";
import "../../../controller-v4.sol";
import "../../../strategies/uniswapv2/strategy-uni-eth-usdc-lp-v4.sol";

contract StrategyUniEthUsdcLpV4Test is StrategyUniFarmTestBase {
    function setUp() public {
        want = 0xB4e16d0168e52d35CaCD2c6185b44281Ec28C9Dc;
        token1 = usdc;

        governance = address(this);
        strategist = address(this);
        devfund = address(new User());
        treasury = address(new User());
        timelock = address(this);

        controller = new ControllerV4(
            governance,
            strategist,
            timelock,
            devfund,
            treasury
        );

        strategy = IStrategy(
            address(
                new StrategyUniEthUsdcLpV4(
                    governance,
                    strategist,
                    address(controller),
                    timelock
                )
            )
        );

        pickleJar = new PickleJar(
            strategy.want(),
            governance,
            timelock,
            address(controller)
        );

        controller.setJar(strategy.want(), address(pickleJar));
        controller.approveStrategy(strategy.want(), address(strategy));
        controller.setStrategy(strategy.want(), address(strategy));

        // Set time
        hevm.warp(startTime);
    }

    // **** Tests ****

    function test_ethusdcv3_1_timelock() public {
        _test_timelock();
    }

    function test_ethusdcv3_1_withdraw_release() public {
        _test_withdraw_release();
    }

    function test_ethusdcv3_1_get_earn_harvest_rewards() public {
        _test_get_earn_harvest_rewards();
    }
}

pragma solidity ^0.6.7;



import "../../lib/test-strategy-uni-farm-base.sol";

import "../../../interfaces/strategy.sol";
import "../../../interfaces/curve.sol";
import "../../../interfaces/uniswapv2.sol";

import "../../../pickle-jar.sol";
import "../../../controller-v4.sol";
import "../../../strategies/uniswapv2/strategy-uni-eth-dai-lp-v4.sol";

contract StrategyUniEthDaiLpV4Test is StrategyUniFarmTestBase {
    function setUp() public {
        want = 0xA478c2975Ab1Ea89e8196811F51A7B7Ade33eB11;
        token1 = dai;

        governance = address(this);
        strategist = address(this);
        devfund = address(new User());
        treasury = address(new User());
        timelock = address(this);

        controller = new ControllerV4(
            governance,
            strategist,
            timelock,
            devfund,
            treasury
        );

        strategy = IStrategy(
            address(
                new StrategyUniEthDaiLpV4(
                    governance,
                    strategist,
                    address(controller),
                    timelock
                )
            )
        );

        pickleJar = new PickleJar(
            strategy.want(),
            governance,
            timelock,
            address(controller)
        );

        controller.setJar(strategy.want(), address(pickleJar));
        controller.approveStrategy(strategy.want(), address(strategy));
        controller.setStrategy(strategy.want(), address(strategy));

        // Set time
        hevm.warp(startTime);
    }

    // **** Tests ****

    function test_ethdaiv3_1_timelock() public {
        _test_timelock();
    }

    function test_ethdaiv3_1_withdraw_release() public {
        _test_withdraw_release();
    }

    function test_ethdaiv3_1_get_earn_harvest_rewards() public {
        _test_get_earn_harvest_rewards();
    }
}

pragma solidity ^0.6.7;



import "../../lib/test-strategy-uni-farm-base.sol";

import "../../../interfaces/strategy.sol";
import "../../../interfaces/curve.sol";
import "../../../interfaces/uniswapv2.sol";

import "../../../pickle-jar.sol";
import "../../../controller-v4.sol";
import "../../../strategies/uniswapv2/strategy-uni-eth-usdt-lp-v4.sol";

contract StrategyUniEthUsdtLpV4Test is StrategyUniFarmTestBase {
    function setUp() public {
        want = 0x0d4a11d5EEaaC28EC3F61d100daF4d40471f1852;
        token1 = usdt;

        governance = address(this);
        strategist = address(this);
        devfund = address(new User());
        treasury = address(new User());
        timelock = address(this);

        controller = new ControllerV4(
            governance,
            strategist,
            timelock,
            devfund,
            treasury
        );

        strategy = IStrategy(
            address(
                new StrategyUniEthUsdtLpV4(
                    governance,
                    strategist,
                    address(controller),
                    timelock
                )
            )
        );

        pickleJar = new PickleJar(
            strategy.want(),
            governance,
            timelock,
            address(controller)
        );

        controller.setJar(strategy.want(), address(pickleJar));
        controller.approveStrategy(strategy.want(), address(strategy));
        controller.setStrategy(strategy.want(), address(strategy));

        // Set time
        hevm.warp(startTime);
    }

    // **** Tests ****

    function test_ethusdtv3_1_timelock() public {
        _test_timelock();
    }

    function test_ethusdtv3_1_withdraw_release() public {
        _test_withdraw_release();
    }

    function test_ethusdtv3_1_get_earn_harvest_rewards() public {
        _test_get_earn_harvest_rewards();
    }
}

pragma solidity ^0.6.7;



import "../../lib/test-strategy-uni-farm-base.sol";

import "../../../interfaces/strategy.sol";
import "../../../interfaces/curve.sol";
import "../../../interfaces/uniswapv2.sol";

import "../../../pickle-jar.sol";
import "../../../controller-v4.sol";
import "../../../strategies/uniswapv2/strategy-uni-eth-wbtc-lp-v2.sol";

contract StrategyUniEthWBtcLpV2Test is StrategyUniFarmTestBase {
    function setUp() public {
        want = 0xBb2b8038a1640196FbE3e38816F3e67Cba72D940;
        token1 = wbtc;

        governance = address(this);
        strategist = address(this);
        devfund = address(new User());
        treasury = address(new User());
        timelock = address(this);

        controller = new ControllerV4(
            governance,
            strategist,
            timelock,
            devfund,
            treasury
        );

        strategy = IStrategy(
            address(
                new StrategyUniEthWBtcLpV2(
                    governance,
                    strategist,
                    address(controller),
                    timelock
                )
            )
        );

        pickleJar = new PickleJar(
            strategy.want(),
            governance,
            timelock,
            address(controller)
        );

        controller.setJar(strategy.want(), address(pickleJar));
        controller.approveStrategy(strategy.want(), address(strategy));
        controller.setStrategy(strategy.want(), address(strategy));

        // Set time
        hevm.warp(startTime);
    }

    // **** Tests ****

    function test_ethwbtcv1_timelock() public {
        _test_timelock();
    }

    function test_ethwbtcv1_withdraw_release() public {
        _test_withdraw_release();
    }

    function test_ethwbtcv1_get_earn_harvest_rewards() public {
        _test_get_earn_harvest_rewards();
    }
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.6.7;

import "../lib/safe-math.sol";

import "../staking-rewards.sol";

import "./lib/test.sol";
import "./lib/mock-erc20.sol";
import "./lib/hevm.sol";

contract StakngRewardsTest is DSTest {
    using SafeMath for uint256;

    MockERC20 stakingToken;
    MockERC20 rewardsToken;

    StakingRewards stakingRewards;

    address owner;

    Hevm hevm = Hevm(0x7109709ECfa91a80626fF3989D68f67F5b1DD12D);

    function setUp() public {
        owner = address(this);

        stakingToken = new MockERC20("staking", "STAKE");
        rewardsToken = new MockERC20("rewards", "RWD");

        stakingRewards = new StakingRewards(
            owner,
            address(rewardsToken),
            address(stakingToken)
        );
    }

    function test_staking() public {
        uint256 stakeAmount = 100 ether;
        uint256 rewardAmount = 100 ether;

        stakingToken.mint(owner, stakeAmount);
        rewardsToken.mint(owner, rewardAmount);

        stakingToken.approve(address(stakingRewards), stakeAmount);
        stakingRewards.stake(stakeAmount);

        // // Make sure nothing is earned
        uint256 _before = stakingRewards.earned(owner);
        assertEq(_before, 0);

        // Fast forward
        hevm.warp(block.timestamp + 1 days);

        // No funds until we actually supply funds
        uint256 _after = stakingRewards.earned(owner);
        assertEq(_after, _before);

        // Give rewards
        rewardsToken.transfer(address(stakingRewards), rewardAmount);
        stakingRewards.notifyRewardAmount(rewardAmount);

        uint256 _rateBefore = stakingRewards.getRewardForDuration();
        assertTrue(_rateBefore > 0);

        // Fast forward
        _before = stakingRewards.earned(owner);
        hevm.warp(block.timestamp + 1 days);
        _after = stakingRewards.earned(owner);
        assertTrue(_after > _before);
        assertTrue(_after > 0);

        // Add more rewards, rate should increase
        rewardsToken.mint(owner, rewardAmount);
        rewardsToken.transfer(address(stakingRewards), rewardAmount);
        stakingRewards.notifyRewardAmount(rewardAmount);

        uint256 _rateAfter = stakingRewards.getRewardForDuration();
        assertTrue(_rateAfter > _rateBefore);

        // Warp to period finish
        hevm.warp(stakingRewards.periodFinish() + 1 days);

        // Retrieve tokens
        stakingRewards.getReward();

        _before = stakingRewards.earned(owner);
        hevm.warp(block.timestamp + 1 days);
        _after = stakingRewards.earned(owner);

        // Earn 0 after period finished
        assertEq(_before, 0);
        assertEq(_after, 0);
    }
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.6.7;
pragma experimental ABIEncoderV2;

import "../lib/hevm.sol";
import "../lib/user.sol";
import "../lib/test-approx.sol";
import "../lib/test-defi-base.sol";

import "../../interfaces/strategy.sol";
import "../../interfaces/curve.sol";
import "../../interfaces/uniswapv2.sol";

import "../../pickle-jar.sol";
import "../../controller-v4.sol";

import "../../proxy-logic/curve.sol";
import "../../proxy-logic/uniswapv2.sol";

import "../../strategies/uniswapv2/strategy-uni-eth-dai-lp-v4.sol";
import "../../strategies/uniswapv2/strategy-uni-eth-usdt-lp-v4.sol";
import "../../strategies/uniswapv2/strategy-uni-eth-usdc-lp-v4.sol";
import "../../strategies/uniswapv2/strategy-uni-eth-wbtc-lp-v2.sol";

import "../../strategies/curve/strategy-curve-scrv-v3_2.sol";
import "../../strategies/curve/strategy-curve-rencrv-v2.sol";
import "../../strategies/curve/strategy-curve-3crv-v2.sol";

contract StrategyCurveUniJarSwapTest is DSTestDefiBase {
    address governance;
    address strategist;
    address devfund;
    address treasury;
    address timelock;

    IStrategy[] curveStrategies;
    IStrategy[] uniStrategies;

    PickleJar[] curvePickleJars;
    PickleJar[] uniPickleJars;

    ControllerV4 controller;

    CurveProxyLogic curveProxyLogic;
    UniswapV2ProxyLogic uniswapV2ProxyLogic;

    address[] curvePools;
    address[] curveLps;

    address[] uniUnderlying;

    // Contract wide variable to avoid stack too deep errors
    uint256 temp;

    function setUp() public {
        governance = address(this);
        strategist = address(this);
        devfund = address(new User());
        treasury = address(new User());
        timelock = address(this);

        controller = new ControllerV4(
            governance,
            strategist,
            timelock,
            devfund,
            treasury
        );

        // Curve Strategies
        curveStrategies = new IStrategy[](3);
        curvePickleJars = new PickleJar[](curveStrategies.length);
        curveLps = new address[](curveStrategies.length);
        curvePools = new address[](curveStrategies.length);

        curveLps[0] = three_crv;
        curvePools[0] = three_pool;
        curveStrategies[0] = IStrategy(
            address(
                new StrategyCurve3CRVv2(
                    governance,
                    strategist,
                    address(controller),
                    timelock
                )
            )
        );

        curveLps[1] = scrv;
        curvePools[1] = susdv2_pool;
        curveStrategies[1] = IStrategy(
            address(
                new StrategyCurveSCRVv3_2(
                    governance,
                    strategist,
                    address(controller),
                    timelock
                )
            )
        );

        curveLps[2] = ren_crv;
        curvePools[2] = ren_pool;
        curveStrategies[2] = IStrategy(
            address(
                new StrategyCurveRenCRVv2(
                    governance,
                    strategist,
                    address(controller),
                    timelock
                )
            )
        );

        // Create PICKLE Jars
        for (uint256 i = 0; i < curvePickleJars.length; i++) {
            curvePickleJars[i] = new PickleJar(
                curveStrategies[i].want(),
                governance,
                timelock,
                address(controller)
            );

            controller.setJar(
                curveStrategies[i].want(),
                address(curvePickleJars[i])
            );
            controller.approveStrategy(
                curveStrategies[i].want(),
                address(curveStrategies[i])
            );
            controller.setStrategy(
                curveStrategies[i].want(),
                address(curveStrategies[i])
            );
        }

        // Uni strategies
        uniStrategies = new IStrategy[](4);
        uniUnderlying = new address[](uniStrategies.length);
        uniPickleJars = new PickleJar[](uniStrategies.length);

        uniUnderlying[0] = dai;
        uniStrategies[0] = IStrategy(
            address(
                new StrategyUniEthDaiLpV4(
                    governance,
                    strategist,
                    address(controller),
                    timelock
                )
            )
        );

        uniUnderlying[1] = usdc;
        uniStrategies[1] = IStrategy(
            address(
                new StrategyUniEthUsdcLpV4(
                    governance,
                    strategist,
                    address(controller),
                    timelock
                )
            )
        );

        uniUnderlying[2] = usdt;
        uniStrategies[2] = IStrategy(
            address(
                new StrategyUniEthUsdtLpV4(
                    governance,
                    strategist,
                    address(controller),
                    timelock
                )
            )
        );

        uniUnderlying[3] = wbtc;
        uniStrategies[3] = IStrategy(
            address(
                new StrategyUniEthWBtcLpV2(
                    governance,
                    strategist,
                    address(controller),
                    timelock
                )
            )
        );

        for (uint256 i = 0; i < uniStrategies.length; i++) {
            uniPickleJars[i] = new PickleJar(
                uniStrategies[i].want(),
                governance,
                timelock,
                address(controller)
            );

            controller.setJar(
                uniStrategies[i].want(),
                address(uniPickleJars[i])
            );
            controller.approveStrategy(
                uniStrategies[i].want(),
                address(uniStrategies[i])
            );
            controller.setStrategy(
                uniStrategies[i].want(),
                address(uniStrategies[i])
            );
        }

        curveProxyLogic = new CurveProxyLogic();
        uniswapV2ProxyLogic = new UniswapV2ProxyLogic();

        controller.approveJarConverter(address(curveProxyLogic));
        controller.approveJarConverter(address(uniswapV2ProxyLogic));

        hevm.warp(startTime);
    }

    function _getCurveLP(address curve, uint256 amount) internal {
        if (curve == ren_pool) {
            _getERC20(wbtc, amount);
            uint256 _wbtc = IERC20(wbtc).balanceOf(address(this));
            IERC20(wbtc).approve(curve, _wbtc);

            uint256[2] memory liquidity;
            liquidity[1] = _wbtc;
            ICurveFi_2(curve).add_liquidity(liquidity, 0);
        } else {
            _getERC20(dai, amount);
            uint256 _dai = IERC20(dai).balanceOf(address(this));
            IERC20(dai).approve(curve, _dai);

            if (curve == three_pool) {
                uint256[3] memory liquidity;
                liquidity[0] = _dai;
                ICurveFi_3(curve).add_liquidity(liquidity, 0);
            } else {
                uint256[4] memory liquidity;
                liquidity[0] = _dai;
                ICurveFi_4(curve).add_liquidity(liquidity, 0);
            }
        }
    }

    function _get_primitive_to_lp_data(
        address from,
        address to,
        address dustRecipient
    ) internal pure returns (bytes memory) {
        return
            abi.encodeWithSignature(
                "primitiveToLpTokens(address,address,address)",
                from,
                to,
                dustRecipient
            );
    }

    function _get_curve_remove_liquidity_data(
        address curve,
        address curveLP,
        int128 index
    ) internal pure returns (bytes memory) {
        return
            abi.encodeWithSignature(
                "remove_liquidity_one_coin(address,address,int128)",
                curve,
                curveLP,
                index
            );
    }

    // Some post swap checks
    // Checks if there's any leftover funds in the converter contract
    function _post_swap_check(uint256 fromIndex, uint256 toIndex) internal {
        IERC20 token0 = curvePickleJars[fromIndex].token();
        IUniswapV2Pair token1 = IUniswapV2Pair(
            address(uniPickleJars[toIndex].token())
        );

        uint256 MAX_DUST = 1000;

        // No funds left behind
        assertEq(curvePickleJars[fromIndex].balanceOf(address(controller)), 0);
        assertEq(uniPickleJars[toIndex].balanceOf(address(controller)), 0);
        assertTrue(token0.balanceOf(address(controller)) < MAX_DUST);
        assertTrue(token1.balanceOf(address(controller)) < MAX_DUST);

        // Curve -> UNI LP should be optimal supply
        // Note: We refund the access, which is why its checking this balance
        assertTrue(IERC20(token1.token0()).balanceOf(address(this)) < MAX_DUST);
        assertTrue(IERC20(token1.token1()).balanceOf(address(this)) < MAX_DUST);

        // Make sure only controller can call 'withdrawForSwap'
        try curveStrategies[fromIndex].withdrawForSwap(0)  {
            revert("!withdraw-for-swap-only-controller");
        } catch {}
    }

    function _test_check_treasury_fee(uint256 _amount, uint256 earned)
        internal
    {
        assertEqApprox(
            _amount.mul(controller.convenienceFee()).div(
                controller.convenienceFeeMax()
            ),
            earned.mul(2)
        );
    }

    function _test_swap_and_check_balances(
        address fromPickleJar,
        address toPickleJar,
        address fromPickleJarUnderlying,
        uint256 fromPickleJarUnderlyingAmount,
        address payable[] memory targets,
        bytes[] memory data
    ) internal {
        uint256 _beforeTo = IERC20(toPickleJar).balanceOf(address(this));
        uint256 _beforeFrom = IERC20(fromPickleJar).balanceOf(address(this));

        uint256 _beforeDev = IERC20(fromPickleJarUnderlying).balanceOf(devfund);
        uint256 _beforeTreasury = IERC20(fromPickleJarUnderlying).balanceOf(
            treasury
        );

        uint256 _ret = controller.swapExactJarForJar(
            fromPickleJar,
            toPickleJar,
            fromPickleJarUnderlyingAmount,
            0, // Min receive amount
            targets,
            data
        );

        uint256 _afterTo = IERC20(toPickleJar).balanceOf(address(this));
        uint256 _afterFrom = IERC20(fromPickleJar).balanceOf(address(this));

        uint256 _afterDev = IERC20(fromPickleJarUnderlying).balanceOf(devfund);
        uint256 _afterTreasury = IERC20(fromPickleJarUnderlying).balanceOf(
            treasury
        );

        uint256 treasuryEarned = _afterTreasury.sub(_beforeTreasury);

        assertEq(treasuryEarned, _afterDev.sub(_beforeDev));
        assertTrue(treasuryEarned > 0);
        _test_check_treasury_fee(fromPickleJarUnderlyingAmount, treasuryEarned);
        assertTrue(_afterFrom < _beforeFrom);
        assertTrue(_afterTo > _beforeTo);
        assertTrue(_afterTo.sub(_beforeTo) > 0);
        assertEq(_afterTo.sub(_beforeTo), _ret);
        assertEq(_afterFrom, 0);
    }

    function _test_curve_uni_swap(
        uint256 fromIndex,
        uint256 toIndex,
        uint256 amount,
        address payable[] memory targets,
        bytes[] memory data
    ) internal {
        // Deposit into PickleJars
        address from = address(curvePickleJars[fromIndex].token());

        _getCurveLP(curvePools[fromIndex], amount);

        uint256 _from = IERC20(from).balanceOf(address(this));
        IERC20(from).approve(address(curvePickleJars[fromIndex]), _from);
        curvePickleJars[fromIndex].deposit(_from);
        curvePickleJars[fromIndex].earn();

        // Swap!
        uint256 _fromPickleJar = IERC20(address(curvePickleJars[fromIndex]))
            .balanceOf(address(this));
        IERC20(address(curvePickleJars[fromIndex])).approve(
            address(controller),
            _fromPickleJar
        );

        // Check minimum amount
        try
            controller.swapExactJarForJar(
                address(curvePickleJars[fromIndex]),
                address(uniPickleJars[toIndex]),
                _fromPickleJar,
                uint256(-1), // Min receive amount
                targets,
                data
            )
         {
            revert("min-amount-should-fail");
        } catch {}

        _test_swap_and_check_balances(
            address(curvePickleJars[fromIndex]),
            address(uniPickleJars[toIndex]),
            from,
            _fromPickleJar,
            targets,
            data
        );

        _post_swap_check(fromIndex, toIndex);
    }

    // **** Tests **** //

    function test_jar_converter_curve_uni_0_0() public {
        uint256 fromIndex = 0;
        uint256 toIndex = 0;
        uint256 amount = 400e18;

        address fromUnderlying = dai;
        int128 fromUnderlyingIndex = 0;

        address curvePool = curvePools[fromIndex];
        address toUnderlying = uniUnderlying[toIndex];
        address toWant = univ2Factory.getPair(weth, toUnderlying);

        bytes memory data0 = _get_curve_remove_liquidity_data(
            curvePool,
            curveLps[fromIndex],
            fromUnderlyingIndex
        );

        bytes memory data1 = _get_primitive_to_lp_data(
            fromUnderlying,
            toWant,
            treasury
        );

        _test_curve_uni_swap(
            fromIndex,
            toIndex,
            amount,
            _getDynamicArray(
                payable(address(curveProxyLogic)),
                payable(address(uniswapV2ProxyLogic))
            ),
            _getDynamicArray(data0, data1)
        );
    }

    function test_jar_converter_curve_uni_0_1() public {
        uint256 fromIndex = 0;
        uint256 toIndex = 1;
        uint256 amount = 400e18;

        address fromUnderlying = usdc;
        int128 fromUnderlyingIndex = 1;

        address curvePool = curvePools[fromIndex];
        address toUnderlying = uniUnderlying[toIndex];
        address toWant = univ2Factory.getPair(weth, toUnderlying);

        bytes memory data0 = _get_curve_remove_liquidity_data(
            curvePool,
            curveLps[fromIndex],
            fromUnderlyingIndex
        );

        bytes memory data1 = _get_primitive_to_lp_data(
            fromUnderlying,
            toWant,
            treasury
        );

        _test_curve_uni_swap(
            fromIndex,
            toIndex,
            amount,
            _getDynamicArray(
                payable(address(curveProxyLogic)),
                payable(address(uniswapV2ProxyLogic))
            ),
            _getDynamicArray(data0, data1)
        );
    }

    function test_jar_converter_curve_uni_0_2() public {
        uint256 fromIndex = 0;
        uint256 toIndex = 2;
        uint256 amount = 400e18;

        address fromUnderlying = usdt;
        int128 fromUnderlyingIndex = 2;

        address curvePool = curvePools[fromIndex];
        address toUnderlying = uniUnderlying[toIndex];
        address toWant = univ2Factory.getPair(weth, toUnderlying);

        bytes memory data0 = _get_curve_remove_liquidity_data(
            curvePool,
            curveLps[fromIndex],
            fromUnderlyingIndex
        );

        bytes memory data1 = _get_primitive_to_lp_data(
            fromUnderlying,
            toWant,
            treasury
        );

        _test_curve_uni_swap(
            fromIndex,
            toIndex,
            amount,
            _getDynamicArray(
                payable(address(curveProxyLogic)),
                payable(address(uniswapV2ProxyLogic))
            ),
            _getDynamicArray(data0, data1)
        );
    }

    function test_jar_converter_curve_uni_0_3() public {
        uint256 fromIndex = 0;
        uint256 toIndex = 3;
        uint256 amount = 400e18;

        address fromUnderlying = usdt;
        int128 fromUnderlyingIndex = 2;

        address curvePool = curvePools[fromIndex];
        address toUnderlying = uniUnderlying[toIndex];
        address toWant = univ2Factory.getPair(weth, toUnderlying);

        bytes memory data0 = _get_curve_remove_liquidity_data(
            curvePool,
            curveLps[fromIndex],
            fromUnderlyingIndex
        );

        bytes memory data1 = _get_primitive_to_lp_data(
            fromUnderlying,
            toWant,
            treasury
        );

        _test_curve_uni_swap(
            fromIndex,
            toIndex,
            amount,
            _getDynamicArray(
                payable(address(curveProxyLogic)),
                payable(address(uniswapV2ProxyLogic))
            ),
            _getDynamicArray(data0, data1)
        );
    }

    function test_jar_converter_curve_uni_1_0() public {
        uint256 fromIndex = 1;
        uint256 toIndex = 0;
        uint256 amount = 400e18;

        address fromUnderlying = usdt;
        int128 fromUnderlyingIndex = 2;

        address curvePool = susdv2_deposit; // curvePools[fromIndex];
        address toUnderlying = uniUnderlying[toIndex];
        address toWant = univ2Factory.getPair(weth, toUnderlying);

        bytes memory data0 = _get_curve_remove_liquidity_data(
            curvePool,
            curveLps[fromIndex],
            fromUnderlyingIndex
        );

        bytes memory data1 = _get_primitive_to_lp_data(
            fromUnderlying,
            toWant,
            treasury
        );

        _test_curve_uni_swap(
            fromIndex,
            toIndex,
            amount,
            _getDynamicArray(
                payable(address(curveProxyLogic)),
                payable(address(uniswapV2ProxyLogic))
            ),
            _getDynamicArray(data0, data1)
        );
    }

    function test_jar_converter_curve_uni_1_1() public {
        uint256 fromIndex = 1;
        uint256 toIndex = 1;
        uint256 amount = 400e18;

        address fromUnderlying = dai;
        int128 fromUnderlyingIndex = 0;

        address curvePool = susdv2_deposit; // curvePools[fromIndex];
        address toUnderlying = uniUnderlying[toIndex];
        address toWant = univ2Factory.getPair(weth, toUnderlying);

        bytes memory data0 = _get_curve_remove_liquidity_data(
            curvePool,
            curveLps[fromIndex],
            fromUnderlyingIndex
        );

        bytes memory data1 = _get_primitive_to_lp_data(
            fromUnderlying,
            toWant,
            treasury
        );

        _test_curve_uni_swap(
            fromIndex,
            toIndex,
            amount,
            _getDynamicArray(
                payable(address(curveProxyLogic)),
                payable(address(uniswapV2ProxyLogic))
            ),
            _getDynamicArray(data0, data1)
        );
    }

    function test_jar_converter_curve_uni_1_2() public {
        uint256 fromIndex = 1;
        uint256 toIndex = 2;
        uint256 amount = 400e18;

        address fromUnderlying = dai;
        int128 fromUnderlyingIndex = 0;

        address curvePool = susdv2_deposit; // curvePools[fromIndex];
        address toUnderlying = uniUnderlying[toIndex];
        address toWant = univ2Factory.getPair(weth, toUnderlying);

        bytes memory data0 = _get_curve_remove_liquidity_data(
            curvePool,
            curveLps[fromIndex],
            fromUnderlyingIndex
        );

        bytes memory data1 = _get_primitive_to_lp_data(
            fromUnderlying,
            toWant,
            treasury
        );

        _test_curve_uni_swap(
            fromIndex,
            toIndex,
            amount,
            _getDynamicArray(
                payable(address(curveProxyLogic)),
                payable(address(uniswapV2ProxyLogic))
            ),
            _getDynamicArray(data0, data1)
        );
    }

    function test_jar_converter_curve_uni_1_3() public {
        uint256 fromIndex = 1;
        uint256 toIndex = 3;
        uint256 amount = 400e18;

        address fromUnderlying = dai;
        int128 fromUnderlyingIndex = 0;

        address curvePool = susdv2_deposit; // curvePools[fromIndex];
        address toUnderlying = uniUnderlying[toIndex];
        address toWant = univ2Factory.getPair(weth, toUnderlying);

        bytes memory data0 = _get_curve_remove_liquidity_data(
            curvePool,
            curveLps[fromIndex],
            fromUnderlyingIndex
        );

        bytes memory data1 = _get_primitive_to_lp_data(
            fromUnderlying,
            toWant,
            treasury
        );

        _test_curve_uni_swap(
            fromIndex,
            toIndex,
            amount,
            _getDynamicArray(
                payable(address(curveProxyLogic)),
                payable(address(uniswapV2ProxyLogic))
            ),
            _getDynamicArray(data0, data1)
        );
    }

    function test_jar_converter_curve_uni_2_3() public {
        uint256 fromIndex = 2;
        uint256 toIndex = 3;
        uint256 amount = 4e6;

        address fromUnderlying = wbtc;
        int128 fromUnderlyingIndex = 1;

        address curvePool = curvePools[fromIndex];
        address toUnderlying = uniUnderlying[toIndex];
        address toWant = univ2Factory.getPair(weth, toUnderlying);

        bytes memory data0 = _get_curve_remove_liquidity_data(
            curvePool,
            curveLps[fromIndex],
            fromUnderlyingIndex
        );

        bytes memory data1 = _get_primitive_to_lp_data(
            fromUnderlying,
            toWant,
            treasury
        );

        _test_curve_uni_swap(
            fromIndex,
            toIndex,
            amount,
            _getDynamicArray(
                payable(address(curveProxyLogic)),
                payable(address(uniswapV2ProxyLogic))
            ),
            _getDynamicArray(data0, data1)
        );
    }
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.6.7;
pragma experimental ABIEncoderV2;

import "../lib/hevm.sol";
import "../lib/user.sol";
import "../lib/test-approx.sol";
import "../lib/test-defi-base.sol";

import "../../interfaces/strategy.sol";
import "../../interfaces/curve.sol";
import "../../interfaces/uniswapv2.sol";

import "../../pickle-jar.sol";
import "../../controller-v4.sol";

import "../../proxy-logic/curve.sol";
import "../../proxy-logic/uniswapv2.sol";

import "../../strategies/curve/strategy-curve-scrv-v3_2.sol";
import "../../strategies/curve/strategy-curve-rencrv-v2.sol";
import "../../strategies/curve/strategy-curve-3crv-v2.sol";

contract StrategyCurveCurveJarSwapTest is DSTestDefiBase {
    address governance;
    address strategist;
    address devfund;
    address treasury;
    address timelock;

    IStrategy[] curveStrategies;

    PickleJar[] curvePickleJars;

    ControllerV4 controller;

    CurveProxyLogic curveProxyLogic;
    UniswapV2ProxyLogic uniswapV2ProxyLogic;

    address[] curvePools;
    address[] curveLps;

    function setUp() public {
        governance = address(this);
        strategist = address(this);
        devfund = address(new User());
        treasury = address(new User());
        timelock = address(this);

        controller = new ControllerV4(
            governance,
            strategist,
            timelock,
            devfund,
            treasury
        );

        // Curve Strategies
        curveStrategies = new IStrategy[](3);
        curvePickleJars = new PickleJar[](curveStrategies.length);
        curveLps = new address[](curveStrategies.length);
        curvePools = new address[](curveStrategies.length);

        curveLps[0] = three_crv;
        curvePools[0] = three_pool;
        curveStrategies[0] = IStrategy(
            address(
                new StrategyCurve3CRVv2(
                    governance,
                    strategist,
                    address(controller),
                    timelock
                )
            )
        );
        curveLps[1] = scrv;
        curvePools[1] = susdv2_pool;
        curveStrategies[1] = IStrategy(
            address(
                new StrategyCurveSCRVv3_2(
                    governance,
                    strategist,
                    address(controller),
                    timelock
                )
            )
        );
        curveLps[2] = ren_crv;
        curvePools[2] = ren_pool;
        curveStrategies[2] = IStrategy(
            address(
                new StrategyCurveRenCRVv2(
                    governance,
                    strategist,
                    address(controller),
                    timelock
                )
            )
        );

        // Create PICKLE Jars
        for (uint256 i = 0; i < curvePickleJars.length; i++) {
            curvePickleJars[i] = new PickleJar(
                curveStrategies[i].want(),
                governance,
                timelock,
                address(controller)
            );

            controller.setJar(
                curveStrategies[i].want(),
                address(curvePickleJars[i])
            );
            controller.approveStrategy(
                curveStrategies[i].want(),
                address(curveStrategies[i])
            );
            controller.setStrategy(
                curveStrategies[i].want(),
                address(curveStrategies[i])
            );
        }

        curveProxyLogic = new CurveProxyLogic();
        uniswapV2ProxyLogic = new UniswapV2ProxyLogic();

        controller.approveJarConverter(address(curveProxyLogic));
        controller.approveJarConverter(address(uniswapV2ProxyLogic));

        hevm.warp(startTime);
    }

    function _getCurveLP(address curve, uint256 amount) internal {
        if (curve == ren_pool) {
            _getERC20(wbtc, amount);
            uint256 _wbtc = IERC20(wbtc).balanceOf(address(this));
            IERC20(wbtc).approve(curve, _wbtc);

            uint256[2] memory liquidity;
            liquidity[1] = _wbtc;
            ICurveFi_2(curve).add_liquidity(liquidity, 0);
        } else {
            _getERC20(dai, amount);
            uint256 _dai = IERC20(dai).balanceOf(address(this));
            IERC20(dai).approve(curve, _dai);

            if (curve == three_pool) {
                uint256[3] memory liquidity;
                liquidity[0] = _dai;
                ICurveFi_3(curve).add_liquidity(liquidity, 0);
            } else {
                uint256[4] memory liquidity;
                liquidity[0] = _dai;
                ICurveFi_4(curve).add_liquidity(liquidity, 0);
            }
        }
    }

    // **** Internal functions **** //
    // Theres so many internal functions due to stack blowing up

    // Some post swap checks
    // Checks if there's any leftover funds in the converter contract
    function _post_swap_check(uint256 fromIndex, uint256 toIndex) internal {
        IERC20 token0 = curvePickleJars[fromIndex].token();
        IERC20 token1 = curvePickleJars[toIndex].token();

        uint256 MAX_DUST = 10;

        // No funds left behind
        assertEq(curvePickleJars[fromIndex].balanceOf(address(controller)), 0);
        assertEq(curvePickleJars[toIndex].balanceOf(address(controller)), 0);
        assertTrue(token0.balanceOf(address(controller)) < MAX_DUST);
        assertTrue(token1.balanceOf(address(controller)) < MAX_DUST);

        // Make sure only controller can call 'withdrawForSwap'
        try curveStrategies[fromIndex].withdrawForSwap(0)  {
            revert("!withdraw-for-swap-only-controller");
        } catch {}
    }

    function _test_check_treasury_fee(uint256 _amount, uint256 earned)
        internal
    {
        assertEqApprox(
            _amount.mul(controller.convenienceFee()).div(
                controller.convenienceFeeMax()
            ),
            earned.mul(2)
        );
    }

    function _test_swap_and_check_balances(
        address fromPickleJar,
        address toPickleJar,
        address fromPickleJarUnderlying,
        uint256 fromPickleJarUnderlyingAmount,
        address payable[] memory targets,
        bytes[] memory data
    ) internal {
        uint256 _beforeTo = IERC20(toPickleJar).balanceOf(address(this));
        uint256 _beforeFrom = IERC20(fromPickleJar).balanceOf(address(this));

        uint256 _beforeDev = IERC20(fromPickleJarUnderlying).balanceOf(devfund);
        uint256 _beforeTreasury = IERC20(fromPickleJarUnderlying).balanceOf(
            treasury
        );

        uint256 _ret = controller.swapExactJarForJar(
            fromPickleJar,
            toPickleJar,
            fromPickleJarUnderlyingAmount,
            0, // Min receive amount
            targets,
            data
        );

        uint256 _afterTo = IERC20(toPickleJar).balanceOf(address(this));
        uint256 _afterFrom = IERC20(fromPickleJar).balanceOf(address(this));

        uint256 _afterDev = IERC20(fromPickleJarUnderlying).balanceOf(devfund);
        uint256 _afterTreasury = IERC20(fromPickleJarUnderlying).balanceOf(
            treasury
        );

        uint256 treasuryEarned = _afterTreasury.sub(_beforeTreasury);

        assertEq(treasuryEarned, _afterDev.sub(_beforeDev));
        assertTrue(treasuryEarned > 0);
        _test_check_treasury_fee(fromPickleJarUnderlyingAmount, treasuryEarned);
        assertTrue(_afterFrom < _beforeFrom);
        assertTrue(_afterTo > _beforeTo);
        assertTrue(_afterTo.sub(_beforeTo) > 0);
        assertEq(_afterTo.sub(_beforeTo), _ret);
        assertEq(_afterFrom, 0);
    }

    function _get_uniswap_pl_swap_data(address from, address to)
        internal pure
        returns (bytes memory)
    {
        return
            abi.encodeWithSignature("swapUniswap(address,address)", from, to);
    }

    function _test_curve_curve(
        uint256 fromIndex,
        uint256 toIndex,
        uint256 amount,
        address payable[] memory targets,
        bytes[] memory data
    ) public {
        // Get LP
        _getCurveLP(curvePools[fromIndex], amount);

        // Deposit into pickle jars
        address from = address(curvePickleJars[fromIndex].token());
        uint256 _from = IERC20(from).balanceOf(address(this));
        IERC20(from).approve(address(curvePickleJars[fromIndex]), _from);
        curvePickleJars[fromIndex].deposit(_from);
        curvePickleJars[fromIndex].earn();

        // Approve controller
        uint256 _fromPickleJar = IERC20(address(curvePickleJars[fromIndex]))
            .balanceOf(address(this));
        IERC20(address(curvePickleJars[fromIndex])).approve(
            address(controller),
            _fromPickleJar
        );

        // Swap
        try
            controller.swapExactJarForJar(
                address(curvePickleJars[fromIndex]),
                address(curvePickleJars[toIndex]),
                _fromPickleJar,
                uint256(-1), // Min receive amount
                targets,
                data
            )
         {
            revert("min-receive-amount");
        } catch {}

        _test_swap_and_check_balances(
            address(curvePickleJars[fromIndex]),
            address(curvePickleJars[toIndex]),
            from,
            _fromPickleJar,
            targets,
            data
        );

        _post_swap_check(fromIndex, toIndex);
    }

    // **** Tests ****

    function test_jar_converter_curve_curve_0() public {
        uint256 fromIndex = 0;
        uint256 toIndex = 1;
        uint256 amount = 400e18;

        int128 fromCurveUnderlyingIndex = 0;

        bytes4 toCurveFunctionSig = _getFunctionSig(
            "add_liquidity(uint256[4],uint256)"
        );
        uint256 toCurvePoolSize = 4;
        uint256 toCurveUnderlyingIndex = 0;
        address toCurveUnderlying = dai;

        // Remove liquidity
        address fromCurve = curvePools[fromIndex];
        address fromCurveLp = curveLps[fromIndex];

        address payable target0 = payable(address(curveProxyLogic));
        bytes memory data0 = abi.encodeWithSignature(
            "remove_liquidity_one_coin(address,address,int128)",
            fromCurve,
            fromCurveLp,
            fromCurveUnderlyingIndex
        );

        // Add liquidity
        address toCurve = curvePools[toIndex];

        address payable target1 = payable(address(curveProxyLogic));
        bytes memory data1 = abi.encodeWithSignature(
            "add_liquidity(address,bytes4,uint256,uint256,address)",
            toCurve,
            toCurveFunctionSig,
            toCurvePoolSize,
            toCurveUnderlyingIndex,
            toCurveUnderlying
        );

        // Swap
        _test_curve_curve(
            fromIndex,
            toIndex,
            amount,
            _getDynamicArray(target0, target1),
            _getDynamicArray(data0, data1)
        );
    }

    function test_jar_converter_curve_curve_1() public {
        uint256 fromIndex = 0;
        uint256 toIndex = 2;
        uint256 amount = 400e18;

        int128 fromCurveUnderlyingIndex = 0;

        bytes4 toCurveFunctionSig = _getFunctionSig(
            "add_liquidity(uint256[2],uint256)"
        );
        uint256 toCurvePoolSize = 2;
        uint256 toCurveUnderlyingIndex = 1;
        address toCurveUnderlying = wbtc;

        // Remove liquidity
        address fromCurve = curvePools[fromIndex];
        address fromCurveLp = curveLps[fromIndex];

        bytes memory data0 = abi.encodeWithSignature(
            "remove_liquidity_one_coin(address,address,int128)",
            fromCurve,
            fromCurveLp,
            fromCurveUnderlyingIndex
        );

        // Swap
        bytes memory data1 = _get_uniswap_pl_swap_data(dai, toCurveUnderlying);

        // Add liquidity
        address toCurve = curvePools[toIndex];

        bytes memory data2 = abi.encodeWithSignature(
            "add_liquidity(address,bytes4,uint256,uint256,address)",
            toCurve,
            toCurveFunctionSig,
            toCurvePoolSize,
            toCurveUnderlyingIndex,
            toCurveUnderlying
        );

        _test_curve_curve(
            fromIndex,
            toIndex,
            amount,
            _getDynamicArray(
                payable(address(curveProxyLogic)),
                payable(address(uniswapV2ProxyLogic)),
                payable(address(curveProxyLogic))
            ),
            _getDynamicArray(data0, data1, data2)
        );
    }

    function test_jar_converter_curve_curve_2() public {
        uint256 fromIndex = 1;
        uint256 toIndex = 0;
        uint256 amount = 400e18;

        int128 fromCurveUnderlyingIndex = 1;

        bytes4 toCurveFunctionSig = _getFunctionSig(
            "add_liquidity(uint256[3],uint256)"
        );
        uint256 toCurvePoolSize = 3;
        uint256 toCurveUnderlyingIndex = 2;
        address toCurveUnderlying = usdt;

        // Remove liquidity
        address fromCurve = susdv2_deposit; // curvePools[fromIndex];
        address fromCurveLp = curveLps[fromIndex];

        bytes memory data0 = abi.encodeWithSignature(
            "remove_liquidity_one_coin(address,address,int128)",
            fromCurve,
            fromCurveLp,
            fromCurveUnderlyingIndex
        );

        // Swap
        bytes memory data1 = _get_uniswap_pl_swap_data(usdc, usdt);

        // Add liquidity
        address toCurve = curvePools[toIndex];

        bytes memory data2 = abi.encodeWithSignature(
            "add_liquidity(address,bytes4,uint256,uint256,address)",
            toCurve,
            toCurveFunctionSig,
            toCurvePoolSize,
            toCurveUnderlyingIndex,
            toCurveUnderlying
        );

        _test_curve_curve(
            fromIndex,
            toIndex,
            amount,
            _getDynamicArray(
                payable(address(curveProxyLogic)),
                payable(address(uniswapV2ProxyLogic)),
                payable(address(curveProxyLogic))
            ),
            _getDynamicArray(data0, data1, data2)
        );
    }

    function test_jar_converter_curve_curve_3() public {
        uint256 fromIndex = 2;
        uint256 toIndex = 0;
        uint256 amount = 4e6;

        int128 fromCurveUnderlyingIndex = 1;

        bytes4 toCurveFunctionSig = _getFunctionSig(
            "add_liquidity(uint256[3],uint256)"
        );
        uint256 toCurvePoolSize = 3;
        uint256 toCurveUnderlyingIndex = 1;
        address toCurveUnderlying = usdc;

        // Remove liquidity
        address fromCurve = curvePools[fromIndex];
        address fromCurveLp = curveLps[fromIndex];

        bytes memory data0 = abi.encodeWithSignature(
            "remove_liquidity_one_coin(address,address,int128)",
            fromCurve,
            fromCurveLp,
            fromCurveUnderlyingIndex
        );

        // Swap
        bytes memory data1 = _get_uniswap_pl_swap_data(wbtc, usdc);

        // Add liquidity
        address toCurve = curvePools[toIndex];

        bytes memory data2 = abi.encodeWithSignature(
            "add_liquidity(address,bytes4,uint256,uint256,address)",
            toCurve,
            toCurveFunctionSig,
            toCurvePoolSize,
            toCurveUnderlyingIndex,
            toCurveUnderlying
        );

        _test_curve_curve(
            fromIndex,
            toIndex,
            amount,
            _getDynamicArray(
                payable(address(curveProxyLogic)),
                payable(address(uniswapV2ProxyLogic)),
                payable(address(curveProxyLogic))
            ),
            _getDynamicArray(data0, data1, data2)
        );
    }

    function test_jar_converter_curve_curve_4() public {
        uint256 fromIndex = 1;
        uint256 toIndex = 0;
        uint256 amount = 400e18;

        int128 fromCurveUnderlyingIndex = 2;

        bytes4 toCurveFunctionSig = _getFunctionSig(
            "add_liquidity(uint256[3],uint256)"
        );
        uint256 toCurvePoolSize = 3;
        uint256 toCurveUnderlyingIndex = 1;
        address toCurveUnderlying = usdc;

        // Remove liquidity
        address fromCurve = susdv2_deposit;
        address fromCurveLp = curveLps[fromIndex];

        bytes memory data0 = abi.encodeWithSignature(
            "remove_liquidity_one_coin(address,address,int128)",
            fromCurve,
            fromCurveLp,
            fromCurveUnderlyingIndex
        );

        // Swap
        bytes memory data1 = _get_uniswap_pl_swap_data(usdt, usdc);

        // Add liquidity
        address toCurve = curvePools[toIndex];

        bytes memory data2 = abi.encodeWithSignature(
            "add_liquidity(address,bytes4,uint256,uint256,address)",
            toCurve,
            toCurveFunctionSig,
            toCurvePoolSize,
            toCurveUnderlyingIndex,
            toCurveUnderlying
        );

        _test_curve_curve(
            fromIndex,
            toIndex,
            amount,
            _getDynamicArray(
                payable(address(curveProxyLogic)),
                payable(address(uniswapV2ProxyLogic)),
                payable(address(curveProxyLogic))
            ),
            _getDynamicArray(data0, data1, data2)
        );
    }
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.6.7;
pragma experimental ABIEncoderV2;

import "../lib/hevm.sol";
import "../lib/user.sol";
import "../lib/test-approx.sol";
import "../lib/test-defi-base.sol";

import "../../interfaces/strategy.sol";
import "../../interfaces/curve.sol";
import "../../interfaces/uniswapv2.sol";

import "../../pickle-jar.sol";
import "../../controller-v4.sol";

import "../../proxy-logic/curve.sol";
import "../../proxy-logic/uniswapv2.sol";

import "../../strategies/uniswapv2/strategy-uni-eth-dai-lp-v4.sol";
import "../../strategies/uniswapv2/strategy-uni-eth-usdt-lp-v4.sol";
import "../../strategies/uniswapv2/strategy-uni-eth-usdc-lp-v4.sol";
import "../../strategies/uniswapv2/strategy-uni-eth-wbtc-lp-v2.sol";

contract StrategyUniUniJarSwapTest is DSTestDefiBase {
    address governance;
    address strategist;
    address devfund;
    address treasury;
    address timelock;

    IStrategy[] uniStrategies;
    PickleJar[] uniPickleJars;

    ControllerV4 controller;

    CurveProxyLogic curveProxyLogic;
    UniswapV2ProxyLogic uniswapV2ProxyLogic;

    address[] uniUnderlying;

    function setUp() public {
        governance = address(this);
        strategist = address(this);
        devfund = address(new User());
        treasury = address(new User());
        timelock = address(this);

        controller = new ControllerV4(
            governance,
            strategist,
            timelock,
            devfund,
            treasury
        );

        // Uni strategies
        uniStrategies = new IStrategy[](4);
        uniUnderlying = new address[](uniStrategies.length);
        uniPickleJars = new PickleJar[](uniStrategies.length);

        uniUnderlying[0] = dai;
        uniStrategies[0] = IStrategy(
            address(
                new StrategyUniEthDaiLpV4(
                    governance,
                    strategist,
                    address(controller),
                    timelock
                )
            )
        );

        uniUnderlying[1] = usdc;
        uniStrategies[1] = IStrategy(
            address(
                new StrategyUniEthUsdcLpV4(
                    governance,
                    strategist,
                    address(controller),
                    timelock
                )
            )
        );

        uniUnderlying[2] = usdt;
        uniStrategies[2] = IStrategy(
            address(
                new StrategyUniEthUsdtLpV4(
                    governance,
                    strategist,
                    address(controller),
                    timelock
                )
            )
        );

        uniUnderlying[3] = wbtc;
        uniStrategies[3] = IStrategy(
            address(
                new StrategyUniEthWBtcLpV2(
                    governance,
                    strategist,
                    address(controller),
                    timelock
                )
            )
        );

        for (uint256 i = 0; i < uniStrategies.length; i++) {
            uniPickleJars[i] = new PickleJar(
                uniStrategies[i].want(),
                governance,
                timelock,
                address(controller)
            );

            controller.setJar(
                uniStrategies[i].want(),
                address(uniPickleJars[i])
            );
            controller.approveStrategy(
                uniStrategies[i].want(),
                address(uniStrategies[i])
            );
            controller.setStrategy(
                uniStrategies[i].want(),
                address(uniStrategies[i])
            );
        }

        curveProxyLogic = new CurveProxyLogic();
        uniswapV2ProxyLogic = new UniswapV2ProxyLogic();

        controller.approveJarConverter(address(curveProxyLogic));
        controller.approveJarConverter(address(uniswapV2ProxyLogic));

        hevm.warp(startTime);
    }

    function _getUniLP(
        address lp,
        uint256 ethAmount,
        uint256 otherAmount
    ) internal {
        IUniswapV2Pair fromPair = IUniswapV2Pair(lp);

        address other = fromPair.token0() != weth
            ? fromPair.token0()
            : fromPair.token1();

        _getERC20(other, otherAmount);

        uint256 _other = IERC20(other).balanceOf(address(this));

        IERC20(other).safeApprove(address(univ2), 0);
        IERC20(other).safeApprove(address(univ2), _other);

        univ2.addLiquidityETH{value: ethAmount}(
            other,
            _other,
            0,
            0,
            address(this),
            now + 60
        );
    }

    function _get_swap_lp_data(
        address from,
        address to,
        address dustRecipient
    ) internal pure returns (bytes memory) {
        return
            abi.encodeWithSignature(
                "swapUniLPTokens(address,address,address)",
                from,
                to,
                dustRecipient
            );
    }

    function _post_swap_check(uint256 fromIndex, uint256 toIndex) internal {
        IERC20 token0 = uniPickleJars[fromIndex].token();
        IERC20 token1 = uniPickleJars[toIndex].token();

        uint256 MAX_DUST = 10;

        // No funds left behind
        assertEq(uniPickleJars[fromIndex].balanceOf(address(controller)), 0);
        assertEq(uniPickleJars[toIndex].balanceOf(address(controller)), 0);
        assertTrue(token0.balanceOf(address(controller)) < MAX_DUST);
        assertTrue(token1.balanceOf(address(controller)) < MAX_DUST);

        // Make sure only controller can call 'withdrawForSwap'
        try uniStrategies[fromIndex].withdrawForSwap(0)  {
            revert("!withdraw-for-swap-only-controller");
        } catch {}
    }

    function _test_check_treasury_fee(uint256 _amount, uint256 earned)
        internal
    {
        assertEqApprox(
            _amount.mul(controller.convenienceFee()).div(
                controller.convenienceFeeMax()
            ),
            earned.mul(2)
        );
    }

    function _test_swap_and_check_balances(
        address fromPickleJar,
        address toPickleJar,
        address fromPickleJarUnderlying,
        uint256 fromPickleJarUnderlyingAmount,
        address payable[] memory targets,
        bytes[] memory data
    ) internal {
        uint256 _beforeTo = IERC20(toPickleJar).balanceOf(address(this));
        uint256 _beforeFrom = IERC20(fromPickleJar).balanceOf(address(this));

        uint256 _beforeDev = IERC20(fromPickleJarUnderlying).balanceOf(devfund);
        uint256 _beforeTreasury = IERC20(fromPickleJarUnderlying).balanceOf(
            treasury
        );

        uint256 _ret = controller.swapExactJarForJar(
            fromPickleJar,
            toPickleJar,
            fromPickleJarUnderlyingAmount,
            0, // Min receive amount
            targets,
            data
        );

        uint256 _afterTo = IERC20(toPickleJar).balanceOf(address(this));
        uint256 _afterFrom = IERC20(fromPickleJar).balanceOf(address(this));

        uint256 _afterDev = IERC20(fromPickleJarUnderlying).balanceOf(devfund);
        uint256 _afterTreasury = IERC20(fromPickleJarUnderlying).balanceOf(
            treasury
        );

        uint256 treasuryEarned = _afterTreasury.sub(_beforeTreasury);

        assertEq(treasuryEarned, _afterDev.sub(_beforeDev));
        assertTrue(treasuryEarned > 0);
        _test_check_treasury_fee(fromPickleJarUnderlyingAmount, treasuryEarned);
        assertTrue(_afterFrom < _beforeFrom);
        assertTrue(_afterTo > _beforeTo);
        assertTrue(_afterTo.sub(_beforeTo) > 0);
        assertEq(_afterTo.sub(_beforeTo), _ret);
        assertEq(_afterFrom, 0);
    }

    function _test_uni_uni(
        uint256 fromIndex,
        uint256 toIndex,
        uint256 amount,
        address payable[] memory targets,
        bytes[] memory data
    ) internal {
        address from = address(uniPickleJars[fromIndex].token());

        _getUniLP(from, 1e18, amount);

        uint256 _from = IERC20(from).balanceOf(address(this));
        IERC20(from).approve(address(uniPickleJars[fromIndex]), _from);
        uniPickleJars[fromIndex].deposit(_from);
        uniPickleJars[fromIndex].earn();

        // Swap!
        uint256 _fromPickleJar = IERC20(address(uniPickleJars[fromIndex]))
            .balanceOf(address(this));
        IERC20(address(uniPickleJars[fromIndex])).approve(
            address(controller),
            _fromPickleJar
        );

        // Check minimum amount
        try
            controller.swapExactJarForJar(
                address(uniPickleJars[fromIndex]),
                address(uniPickleJars[toIndex]),
                _fromPickleJar,
                uint256(-1), // Min receive amount
                targets,
                data
            )
         {
            revert("min-amount-should-fail");
        } catch {}

        _test_swap_and_check_balances(
            address(uniPickleJars[fromIndex]),
            address(uniPickleJars[toIndex]),
            from,
            _fromPickleJar,
            targets,
            data
        );

        _post_swap_check(fromIndex, toIndex);
    }

    // **** Tests ****

    function test_jar_converter_uni_uni_0() public {
        uint256 fromIndex = 0;
        uint256 toIndex = 1;
        uint256 amount = 400e18;

        address fromUnderlying = uniUnderlying[fromIndex];
        address from = univ2Factory.getPair(weth, fromUnderlying);

        address toUnderlying = uniUnderlying[toIndex];
        address to = univ2Factory.getPair(weth, toUnderlying);

        _test_uni_uni(
            fromIndex,
            toIndex,
            amount,
            _getDynamicArray(payable(address(uniswapV2ProxyLogic))),
            _getDynamicArray(_get_swap_lp_data(from, to, treasury))
        );
    }

    function test_jar_converter_uni_uni_1() public {
        uint256 fromIndex = 0;
        uint256 toIndex = 2;
        uint256 amount = 400e18;

        address fromUnderlying = uniUnderlying[fromIndex];
        address from = univ2Factory.getPair(weth, fromUnderlying);

        address toUnderlying = uniUnderlying[toIndex];
        address to = univ2Factory.getPair(weth, toUnderlying);

        _test_uni_uni(
            fromIndex,
            toIndex,
            amount,
            _getDynamicArray(payable(address(uniswapV2ProxyLogic))),
            _getDynamicArray(_get_swap_lp_data(from, to, treasury))
        );
    }

    function test_jar_converter_uni_uni_2() public {
        uint256 fromIndex = 2;
        uint256 toIndex = 3;
        uint256 amount = 400e6;

        address fromUnderlying = uniUnderlying[fromIndex];
        address from = univ2Factory.getPair(weth, fromUnderlying);

        address toUnderlying = uniUnderlying[toIndex];
        address to = univ2Factory.getPair(weth, toUnderlying);

        _test_uni_uni(
            fromIndex,
            toIndex,
            amount,
            _getDynamicArray(payable(address(uniswapV2ProxyLogic))),
            _getDynamicArray(_get_swap_lp_data(from, to, treasury))
        );
    }

    function test_jar_converter_uni_uni_3() public {
        uint256 fromIndex = 3;
        uint256 toIndex = 2;
        uint256 amount = 4e6;

        address fromUnderlying = uniUnderlying[fromIndex];
        address from = univ2Factory.getPair(weth, fromUnderlying);

        address toUnderlying = uniUnderlying[toIndex];
        address to = univ2Factory.getPair(weth, toUnderlying);

        _test_uni_uni(
            fromIndex,
            toIndex,
            amount,
            _getDynamicArray(payable(address(uniswapV2ProxyLogic))),
            _getDynamicArray(_get_swap_lp_data(from, to, treasury))
        );
    }
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.6.7;
pragma experimental ABIEncoderV2;

import "../lib/hevm.sol";
import "../lib/user.sol";
import "../lib/test-approx.sol";
import "../lib/test-defi-base.sol";

import "../../interfaces/strategy.sol";
import "../../interfaces/curve.sol";
import "../../interfaces/uniswapv2.sol";

import "../../pickle-jar.sol";
import "../../controller-v4.sol";

import "../../proxy-logic/curve.sol";
import "../../proxy-logic/uniswapv2.sol";

import "../../strategies/uniswapv2/strategy-uni-eth-dai-lp-v4.sol";
import "../../strategies/uniswapv2/strategy-uni-eth-usdt-lp-v4.sol";
import "../../strategies/uniswapv2/strategy-uni-eth-usdc-lp-v4.sol";
import "../../strategies/uniswapv2/strategy-uni-eth-wbtc-lp-v2.sol";

import "../../strategies/curve/strategy-curve-scrv-v3_2.sol";
import "../../strategies/curve/strategy-curve-rencrv-v2.sol";
import "../../strategies/curve/strategy-curve-3crv-v2.sol";

contract StrategyUniCurveJarSwapTest is DSTestDefiBase {
    address governance;
    address strategist;
    address devfund;
    address treasury;
    address timelock;

    IStrategy[] curveStrategies;
    IStrategy[] uniStrategies;

    PickleJar[] curvePickleJars;
    PickleJar[] uniPickleJars;

    ControllerV4 controller;

    CurveProxyLogic curveProxyLogic;
    UniswapV2ProxyLogic uniswapV2ProxyLogic;

    address[] curvePools;
    address[] curveLps;

    address[] uniUnderlying;

    // Contract wide variable to avoid stack too deep errors
    uint256 temp;

    function setUp() public {
        governance = address(this);
        strategist = address(this);
        devfund = address(new User());
        treasury = address(new User());
        timelock = address(this);

        controller = new ControllerV4(
            governance,
            strategist,
            timelock,
            devfund,
            treasury
        );

        // Curve Strategies
        curveStrategies = new IStrategy[](3);
        curvePickleJars = new PickleJar[](curveStrategies.length);
        curveLps = new address[](curveStrategies.length);
        curvePools = new address[](curveStrategies.length);

        curveLps[0] = three_crv;
        curvePools[0] = three_pool;
        curveStrategies[0] = IStrategy(
            address(
                new StrategyCurve3CRVv2(
                    governance,
                    strategist,
                    address(controller),
                    timelock
                )
            )
        );

        curveLps[1] = scrv;
        curvePools[1] = susdv2_pool;
        curveStrategies[1] = IStrategy(
            address(
                new StrategyCurveSCRVv3_2(
                    governance,
                    strategist,
                    address(controller),
                    timelock
                )
            )
        );

        curveLps[2] = ren_crv;
        curvePools[2] = ren_pool;
        curveStrategies[2] = IStrategy(
            address(
                new StrategyCurveRenCRVv2(
                    governance,
                    strategist,
                    address(controller),
                    timelock
                )
            )
        );

        // Create PICKLE Jars
        for (uint256 i = 0; i < curvePickleJars.length; i++) {
            curvePickleJars[i] = new PickleJar(
                curveStrategies[i].want(),
                governance,
                timelock,
                address(controller)
            );

            controller.setJar(
                curveStrategies[i].want(),
                address(curvePickleJars[i])
            );
            controller.approveStrategy(
                curveStrategies[i].want(),
                address(curveStrategies[i])
            );
            controller.setStrategy(
                curveStrategies[i].want(),
                address(curveStrategies[i])
            );
        }

        // Uni strategies
        uniStrategies = new IStrategy[](4);
        uniUnderlying = new address[](uniStrategies.length);
        uniPickleJars = new PickleJar[](uniStrategies.length);

        uniUnderlying[0] = dai;
        uniStrategies[0] = IStrategy(
            address(
                new StrategyUniEthDaiLpV4(
                    governance,
                    strategist,
                    address(controller),
                    timelock
                )
            )
        );

        uniUnderlying[1] = usdc;
        uniStrategies[1] = IStrategy(
            address(
                new StrategyUniEthUsdcLpV4(
                    governance,
                    strategist,
                    address(controller),
                    timelock
                )
            )
        );

        uniUnderlying[2] = usdt;
        uniStrategies[2] = IStrategy(
            address(
                new StrategyUniEthUsdtLpV4(
                    governance,
                    strategist,
                    address(controller),
                    timelock
                )
            )
        );

        uniUnderlying[3] = wbtc;
        uniStrategies[3] = IStrategy(
            address(
                new StrategyUniEthWBtcLpV2(
                    governance,
                    strategist,
                    address(controller),
                    timelock
                )
            )
        );

        for (uint256 i = 0; i < uniStrategies.length; i++) {
            uniPickleJars[i] = new PickleJar(
                uniStrategies[i].want(),
                governance,
                timelock,
                address(controller)
            );

            controller.setJar(
                uniStrategies[i].want(),
                address(uniPickleJars[i])
            );
            controller.approveStrategy(
                uniStrategies[i].want(),
                address(uniStrategies[i])
            );
            controller.setStrategy(
                uniStrategies[i].want(),
                address(uniStrategies[i])
            );
        }

        curveProxyLogic = new CurveProxyLogic();
        uniswapV2ProxyLogic = new UniswapV2ProxyLogic();

        controller.approveJarConverter(address(curveProxyLogic));
        controller.approveJarConverter(address(uniswapV2ProxyLogic));

        hevm.warp(startTime);
    }

    function _getUniLP(
        address lp,
        uint256 ethAmount,
        uint256 otherAmount
    ) internal {
        IUniswapV2Pair fromPair = IUniswapV2Pair(lp);

        address other = fromPair.token0() != weth
            ? fromPair.token0()
            : fromPair.token1();

        _getERC20(other, otherAmount);

        uint256 _other = IERC20(other).balanceOf(address(this));

        IERC20(other).safeApprove(address(univ2), 0);
        IERC20(other).safeApprove(address(univ2), _other);

        univ2.addLiquidityETH{value: ethAmount}(
            other,
            _other,
            0,
            0,
            address(this),
            now + 60
        );
    }

    function _get_uniswap_remove_liquidity_data(address pair)
        internal
        pure
        returns (bytes memory)
    {
        return abi.encodeWithSignature("removeLiquidity(address)", pair);
    }

    function _get_uniswap_lp_tokens_to_primitive(address from, address to)
        internal
        pure
        returns (bytes memory)
    {
        return
            abi.encodeWithSignature(
                "lpTokensToPrimitive(address,address)",
                from,
                to
            );
    }

    function _get_curve_add_liquidity_data(
        address curve,
        bytes4 curveFunctionSig,
        uint256 curvePoolSize,
        uint256 curveUnderlyingIndex,
        address underlying
    ) internal pure returns (bytes memory) {
        return
            abi.encodeWithSignature(
                "add_liquidity(address,bytes4,uint256,uint256,address)",
                curve,
                curveFunctionSig,
                curvePoolSize,
                curveUnderlyingIndex,
                underlying
            );
    }

    // Some post swap checks
    // Checks if there's any leftover funds in the converter contract
    function _post_swap_check(uint256 fromIndex, uint256 toIndex) internal {
        IERC20 token0 = uniPickleJars[fromIndex].token();
        IERC20 token1 = curvePickleJars[toIndex].token();

        // No funds left behind
        assertEq(uniPickleJars[fromIndex].balanceOf(address(controller)), 0);
        assertEq(curvePickleJars[toIndex].balanceOf(address(controller)), 0);
        assertEq(token0.balanceOf(address(controller)), 0);
        assertEq(token1.balanceOf(address(controller)), 0);
        assertEq(IERC20(wbtc).balanceOf(address(controller)), 0);
        // assertEq(IERC20(usdt).balanceOf(address(controller)), 0);
        // assertEq(IERC20(usdc).balanceOf(address(controller)), 0);
        // assertEq(IERC20(susd).balanceOf(address(controller)), 0);
        // assertEq(IERC20(dai).balanceOf(address(controller)), 0);

        // No balance left behind!
        assertEq(token1.balanceOf(address(this)), 0);

        // Make sure only controller can call 'withdrawForSwap'
        try uniStrategies[fromIndex].withdrawForSwap(0)  {
            revert("!withdraw-for-swap-only-controller");
        } catch {}
    }

    function _test_check_treasury_fee(uint256 _amount, uint256 earned)
        internal
    {
        assertEqApprox(
            _amount.mul(controller.convenienceFee()).div(
                controller.convenienceFeeMax()
            ),
            earned.mul(2)
        );
    }

    function _test_swap_and_check_balances(
        address fromPickleJar,
        address toPickleJar,
        address fromPickleJarUnderlying,
        uint256 fromPickleJarUnderlyingAmount,
        address payable[] memory targets,
        bytes[] memory data
    ) internal {
        uint256 _beforeTo = IERC20(toPickleJar).balanceOf(address(this));
        uint256 _beforeFrom = IERC20(fromPickleJar).balanceOf(address(this));

        uint256 _beforeDev = IERC20(fromPickleJarUnderlying).balanceOf(devfund);
        uint256 _beforeTreasury = IERC20(fromPickleJarUnderlying).balanceOf(
            treasury
        );

        uint256 _ret = controller.swapExactJarForJar(
            fromPickleJar,
            toPickleJar,
            fromPickleJarUnderlyingAmount,
            0, // Min receive amount
            targets,
            data
        );

        uint256 _afterTo = IERC20(toPickleJar).balanceOf(address(this));
        uint256 _afterFrom = IERC20(fromPickleJar).balanceOf(address(this));

        uint256 _afterDev = IERC20(fromPickleJarUnderlying).balanceOf(devfund);
        uint256 _afterTreasury = IERC20(fromPickleJarUnderlying).balanceOf(
            treasury
        );

        uint256 treasuryEarned = _afterTreasury.sub(_beforeTreasury);

        assertEq(treasuryEarned, _afterDev.sub(_beforeDev));
        assertTrue(treasuryEarned > 0);
        _test_check_treasury_fee(fromPickleJarUnderlyingAmount, treasuryEarned);
        assertTrue(_afterFrom < _beforeFrom);
        assertTrue(_afterTo > _beforeTo);
        assertTrue(_afterTo.sub(_beforeTo) > 0);
        assertEq(_afterTo.sub(_beforeTo), _ret);
        assertEq(_afterFrom, 0);
    }

    function _test_uni_curve_swap(
        uint256 fromIndex,
        uint256 toIndex,
        uint256 amount,
        address payable[] memory targets,
        bytes[] memory data
    ) internal {
        // Deposit into PickleJars
        address from = address(uniPickleJars[fromIndex].token());

        _getUniLP(from, 1e18, amount);

        uint256 _from = IERC20(from).balanceOf(address(this));
        IERC20(from).approve(address(uniPickleJars[fromIndex]), _from);
        uniPickleJars[fromIndex].deposit(_from);
        uniPickleJars[fromIndex].earn();

        // Swap!
        uint256 _fromPickleJar = IERC20(address(uniPickleJars[fromIndex]))
            .balanceOf(address(this));
        IERC20(address(uniPickleJars[fromIndex])).approve(
            address(controller),
            _fromPickleJar
        );

        // Check minimum amount
        try
            controller.swapExactJarForJar(
                address(uniPickleJars[fromIndex]),
                address(curvePickleJars[toIndex]),
                _fromPickleJar,
                uint256(-1), // Min receive amount
                targets,
                data
            )
         {
            revert("min-amount-should-fail");
        } catch {}

        _test_swap_and_check_balances(
            address(uniPickleJars[fromIndex]),
            address(curvePickleJars[toIndex]),
            from,
            _fromPickleJar,
            targets,
            data
        );

        _post_swap_check(fromIndex, toIndex);
    }

    // **** Tests **** //

    function test_jar_converter_uni_curve_0_0() public {
        uint256 fromIndex = 0;
        uint256 toIndex = 0;
        uint256 amount = 400e18;

        address fromUnderlying = uniUnderlying[fromIndex];

        address curvePool = curvePools[toIndex];
        uint256 curvePoolSize = 3;
        address curveUnderlying = dai;
        uint256 curveUnderlyingIndex = 0;
        bytes4 curveFunctionSig = _getFunctionSig(
            "add_liquidity(uint256[3],uint256)"
        );

        bytes memory data0 = _get_uniswap_lp_tokens_to_primitive(
            univ2Factory.getPair(weth, fromUnderlying),
            curveUnderlying
        );

        bytes memory data1 = _get_curve_add_liquidity_data(
            curvePool,
            curveFunctionSig,
            curvePoolSize,
            curveUnderlyingIndex,
            curveUnderlying
        );

        _test_uni_curve_swap(
            fromIndex,
            toIndex,
            amount,
            _getDynamicArray(
                payable(address(uniswapV2ProxyLogic)),
                payable(address(curveProxyLogic))
            ),
            _getDynamicArray(data0, data1)
        );
    }

    function test_jar_converter_uni_curve_1_0() public {
        uint256 fromIndex = 1;
        uint256 toIndex = 0;
        uint256 amount = 400e6;

        address fromUnderlying = uniUnderlying[fromIndex];

        address curvePool = curvePools[toIndex];
        uint256 curvePoolSize = 3;
        address curveUnderlying = dai;
        uint256 curveUnderlyingIndex = 0;
        bytes4 curveFunctionSig = _getFunctionSig(
            "add_liquidity(uint256[3],uint256)"
        );

        bytes memory data0 = _get_uniswap_lp_tokens_to_primitive(
            univ2Factory.getPair(weth, fromUnderlying),
            curveUnderlying
        );

        bytes memory data1 = _get_curve_add_liquidity_data(
            curvePool,
            curveFunctionSig,
            curvePoolSize,
            curveUnderlyingIndex,
            curveUnderlying
        );

        _test_uni_curve_swap(
            fromIndex,
            toIndex,
            amount,
            _getDynamicArray(
                payable(address(uniswapV2ProxyLogic)),
                payable(address(curveProxyLogic))
            ),
            _getDynamicArray(data0, data1)
        );
    }

    function test_jar_converter_uni_curve_2_0() public {
        uint256 fromIndex = 2;
        uint256 toIndex = 0;
        uint256 amount = 400e6;

        address fromUnderlying = uniUnderlying[fromIndex];

        address curvePool = curvePools[toIndex];
        uint256 curvePoolSize = 3;
        address curveUnderlying = dai;
        uint256 curveUnderlyingIndex = 0;
        bytes4 curveFunctionSig = _getFunctionSig(
            "add_liquidity(uint256[3],uint256)"
        );

        bytes memory data0 = _get_uniswap_lp_tokens_to_primitive(
            univ2Factory.getPair(weth, fromUnderlying),
            curveUnderlying
        );

        bytes memory data1 = _get_curve_add_liquidity_data(
            curvePool,
            curveFunctionSig,
            curvePoolSize,
            curveUnderlyingIndex,
            curveUnderlying
        );

        _test_uni_curve_swap(
            fromIndex,
            toIndex,
            amount,
            _getDynamicArray(
                payable(address(uniswapV2ProxyLogic)),
                payable(address(curveProxyLogic))
            ),
            _getDynamicArray(data0, data1)
        );
    }

    function test_jar_converter_uni_curve_3_0() public {
        uint256 fromIndex = 3;
        uint256 toIndex = 0;
        uint256 amount = 4e6;

        address fromUnderlying = uniUnderlying[fromIndex];

        address curvePool = curvePools[toIndex];
        uint256 curvePoolSize = 3;
        address curveUnderlying = dai;
        uint256 curveUnderlyingIndex = 0;
        bytes4 curveFunctionSig = _getFunctionSig(
            "add_liquidity(uint256[3],uint256)"
        );

        bytes memory data0 = _get_uniswap_lp_tokens_to_primitive(
            univ2Factory.getPair(weth, fromUnderlying),
            curveUnderlying
        );

        bytes memory data1 = _get_curve_add_liquidity_data(
            curvePool,
            curveFunctionSig,
            curvePoolSize,
            curveUnderlyingIndex,
            curveUnderlying
        );

        _test_uni_curve_swap(
            fromIndex,
            toIndex,
            amount,
            _getDynamicArray(
                payable(address(uniswapV2ProxyLogic)),
                payable(address(curveProxyLogic))
            ),
            _getDynamicArray(data0, data1)
        );
    }

    function test_jar_converter_uni_curve_0_1() public {
        uint256 fromIndex = 0;
        uint256 toIndex = 1;
        uint256 amount = 400e18;

        address fromUnderlying = uniUnderlying[fromIndex];

        address curvePool = curvePools[toIndex];
        uint256 curvePoolSize = 4;
        address curveUnderlying = usdt;
        uint256 curveUnderlyingIndex = 2;
        bytes4 curveFunctionSig = _getFunctionSig(
            "add_liquidity(uint256[4],uint256)"
        );

        bytes memory data0 = _get_uniswap_lp_tokens_to_primitive(
            univ2Factory.getPair(weth, fromUnderlying),
            curveUnderlying
        );

        bytes memory data1 = _get_curve_add_liquidity_data(
            curvePool,
            curveFunctionSig,
            curvePoolSize,
            curveUnderlyingIndex,
            curveUnderlying
        );

        _test_uni_curve_swap(
            fromIndex,
            toIndex,
            amount,
            _getDynamicArray(
                payable(address(uniswapV2ProxyLogic)),
                payable(address(curveProxyLogic))
            ),
            _getDynamicArray(data0, data1)
        );
    }

    function test_jar_converter_uni_curve_1_1() public {
        uint256 fromIndex = 1;
        uint256 toIndex = 1;
        uint256 amount = 400e6;

        address fromUnderlying = uniUnderlying[fromIndex];

        address curvePool = curvePools[toIndex];
        uint256 curvePoolSize = 4;
        address curveUnderlying = usdt;
        uint256 curveUnderlyingIndex = 2;
        bytes4 curveFunctionSig = _getFunctionSig(
            "add_liquidity(uint256[4],uint256)"
        );

        bytes memory data0 = _get_uniswap_lp_tokens_to_primitive(
            univ2Factory.getPair(weth, fromUnderlying),
            curveUnderlying
        );

        bytes memory data1 = _get_curve_add_liquidity_data(
            curvePool,
            curveFunctionSig,
            curvePoolSize,
            curveUnderlyingIndex,
            curveUnderlying
        );

        _test_uni_curve_swap(
            fromIndex,
            toIndex,
            amount,
            _getDynamicArray(
                payable(address(uniswapV2ProxyLogic)),
                payable(address(curveProxyLogic))
            ),
            _getDynamicArray(data0, data1)
        );
    }

    function test_jar_converter_uni_curve_2_1() public {
        uint256 fromIndex = 2;
        uint256 toIndex = 1;
        uint256 amount = 400e6;

        address fromUnderlying = uniUnderlying[fromIndex];

        address curvePool = curvePools[toIndex];
        uint256 curvePoolSize = 4;
        address curveUnderlying = usdt;
        uint256 curveUnderlyingIndex = 2;
        bytes4 curveFunctionSig = _getFunctionSig(
            "add_liquidity(uint256[4],uint256)"
        );

        bytes memory data0 = _get_uniswap_lp_tokens_to_primitive(
            univ2Factory.getPair(weth, fromUnderlying),
            curveUnderlying
        );

        bytes memory data1 = _get_curve_add_liquidity_data(
            curvePool,
            curveFunctionSig,
            curvePoolSize,
            curveUnderlyingIndex,
            curveUnderlying
        );

        _test_uni_curve_swap(
            fromIndex,
            toIndex,
            amount,
            _getDynamicArray(
                payable(address(uniswapV2ProxyLogic)),
                payable(address(curveProxyLogic))
            ),
            _getDynamicArray(data0, data1)
        );
    }

    function test_jar_converter_uni_curve_3_1() public {
        uint256 fromIndex = 3;
        uint256 toIndex = 1;
        uint256 amount = 4e6;

        address fromUnderlying = uniUnderlying[fromIndex];

        address curvePool = curvePools[toIndex];
        uint256 curvePoolSize = 4;
        address curveUnderlying = usdt;
        uint256 curveUnderlyingIndex = 2;
        bytes4 curveFunctionSig = _getFunctionSig(
            "add_liquidity(uint256[4],uint256)"
        );

        bytes memory data0 = _get_uniswap_lp_tokens_to_primitive(
            univ2Factory.getPair(weth, fromUnderlying),
            curveUnderlying
        );

        bytes memory data1 = _get_curve_add_liquidity_data(
            curvePool,
            curveFunctionSig,
            curvePoolSize,
            curveUnderlyingIndex,
            curveUnderlying
        );

        _test_uni_curve_swap(
            fromIndex,
            toIndex,
            amount,
            _getDynamicArray(
                payable(address(uniswapV2ProxyLogic)),
                payable(address(curveProxyLogic))
            ),
            _getDynamicArray(data0, data1)
        );
    }

    function test_jar_converter_uni_curve_4_1() public {
        uint256 fromIndex = 3;
        uint256 toIndex = 1;
        uint256 amount = 4e6;

        address fromUnderlying = uniUnderlying[fromIndex];

        address curvePool = curvePools[toIndex];
        uint256 curvePoolSize = 4;
        address curveUnderlying = usdt;
        uint256 curveUnderlyingIndex = 2;
        bytes4 curveFunctionSig = _getFunctionSig(
            "add_liquidity(uint256[4],uint256)"
        );

        bytes memory data0 = _get_uniswap_lp_tokens_to_primitive(
            univ2Factory.getPair(weth, fromUnderlying),
            curveUnderlying
        );

        bytes memory data1 = _get_curve_add_liquidity_data(
            curvePool,
            curveFunctionSig,
            curvePoolSize,
            curveUnderlyingIndex,
            curveUnderlying
        );

        _test_uni_curve_swap(
            fromIndex,
            toIndex,
            amount,
            _getDynamicArray(
                payable(address(uniswapV2ProxyLogic)),
                payable(address(curveProxyLogic))
            ),
            _getDynamicArray(data0, data1)
        );
    }

    function test_jar_converter_uni_curve_0_2() public {
        uint256 fromIndex = 0;
        uint256 toIndex = 2;
        uint256 amount = 400e18;

        address fromUnderlying = uniUnderlying[fromIndex];

        address curvePool = curvePools[toIndex];
        uint256 curvePoolSize = 2;
        address curveUnderlying = wbtc;
        uint256 curveUnderlyingIndex = 1;
        bytes4 curveFunctionSig = _getFunctionSig(
            "add_liquidity(uint256[2],uint256)"
        );

        bytes memory data0 = _get_uniswap_lp_tokens_to_primitive(
            univ2Factory.getPair(weth, fromUnderlying),
            curveUnderlying
        );

        bytes memory data1 = _get_curve_add_liquidity_data(
            curvePool,
            curveFunctionSig,
            curvePoolSize,
            curveUnderlyingIndex,
            curveUnderlying
        );

        _test_uni_curve_swap(
            fromIndex,
            toIndex,
            amount,
            _getDynamicArray(
                payable(address(uniswapV2ProxyLogic)),
                payable(address(curveProxyLogic))
            ),
            _getDynamicArray(data0, data1)
        );
    }

    function test_jar_converter_uni_curve_1_2() public {
        uint256 fromIndex = 1;
        uint256 toIndex = 2;
        uint256 amount = 400e6;

        address fromUnderlying = uniUnderlying[fromIndex];

        address curvePool = curvePools[toIndex];
        uint256 curvePoolSize = 2;
        address curveUnderlying = wbtc;
        uint256 curveUnderlyingIndex = 1;
        bytes4 curveFunctionSig = _getFunctionSig(
            "add_liquidity(uint256[2],uint256)"
        );

        bytes memory data0 = _get_uniswap_lp_tokens_to_primitive(
            univ2Factory.getPair(weth, fromUnderlying),
            curveUnderlying
        );

        bytes memory data1 = _get_curve_add_liquidity_data(
            curvePool,
            curveFunctionSig,
            curvePoolSize,
            curveUnderlyingIndex,
            curveUnderlying
        );

        _test_uni_curve_swap(
            fromIndex,
            toIndex,
            amount,
            _getDynamicArray(
                payable(address(uniswapV2ProxyLogic)),
                payable(address(curveProxyLogic))
            ),
            _getDynamicArray(data0, data1)
        );
    }

    function test_jar_converter_uni_curve_2_2() public {
        uint256 fromIndex = 2;
        uint256 toIndex = 2;
        uint256 amount = 400e6;

        address fromUnderlying = uniUnderlying[fromIndex];

        address curvePool = curvePools[toIndex];
        uint256 curvePoolSize = 2;
        address curveUnderlying = wbtc;
        uint256 curveUnderlyingIndex = 1;
        bytes4 curveFunctionSig = _getFunctionSig(
            "add_liquidity(uint256[2],uint256)"
        );

        bytes memory data0 = _get_uniswap_lp_tokens_to_primitive(
            univ2Factory.getPair(weth, fromUnderlying),
            curveUnderlying
        );

        bytes memory data1 = _get_curve_add_liquidity_data(
            curvePool,
            curveFunctionSig,
            curvePoolSize,
            curveUnderlyingIndex,
            curveUnderlying
        );

        _test_uni_curve_swap(
            fromIndex,
            toIndex,
            amount,
            _getDynamicArray(
                payable(address(uniswapV2ProxyLogic)),
                payable(address(curveProxyLogic))
            ),
            _getDynamicArray(data0, data1)
        );
    }

    function test_jar_converter_uni_curve_3_2() public {
        uint256 fromIndex = 3;
        uint256 toIndex = 2;
        uint256 amount = 4e6;

        address fromUnderlying = uniUnderlying[fromIndex];

        address curvePool = curvePools[toIndex];
        uint256 curvePoolSize = 2;
        address curveUnderlying = wbtc;
        uint256 curveUnderlyingIndex = 1;
        bytes4 curveFunctionSig = _getFunctionSig(
            "add_liquidity(uint256[2],uint256)"
        );

        bytes memory data0 = _get_uniswap_lp_tokens_to_primitive(
            univ2Factory.getPair(weth, fromUnderlying),
            curveUnderlying
        );

        bytes memory data1 = _get_curve_add_liquidity_data(
            curvePool,
            curveFunctionSig,
            curvePoolSize,
            curveUnderlyingIndex,
            curveUnderlying
        );

        _test_uni_curve_swap(
            fromIndex,
            toIndex,
            amount,
            _getDynamicArray(
                payable(address(uniswapV2ProxyLogic)),
                payable(address(curveProxyLogic))
            ),
            _getDynamicArray(data0, data1)
        );
    }

}

// SPDX-License-Identifier: MIT

pragma solidity ^0.6.7;

import "./lib/safe-math.sol";
import "./lib/erc20.sol";

import "./interfaces/uniswapv2.sol";
import "./interfaces/curve.sol";

// Converts UNI LP Tokens to Curve LP Tokens
// Mainly for treasury
contract UniCurveConverter {
    using SafeMath for uint256;
    using SafeERC20 for IERC20;

    UniswapRouterV2 public router = UniswapRouterV2(
        0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D
    );

    // Stablecoins
    address public constant dai = 0x6B175474E89094C44Da98b954EedeAC495271d0F;
    address public constant usdc = 0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48;
    address public constant usdt = 0xdAC17F958D2ee523a2206206994597C13D831ec7;
    address public constant susd = 0x57Ab1ec28D129707052df4dF418D58a2D46d5f51;

    // Wrapped stablecoins
    address public constant scrv = 0xC25a3A3b969415c80451098fa907EC722572917F;

    // Weth
    address public constant weth = 0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2;

    // susd v2 pool
    ICurveFi_4 public curve = ICurveFi_4(
        0xA5407eAE9Ba41422680e2e00537571bcC53efBfD
    );

    // UNI LP -> Curve LP
    // Assume th
    function convert(address _lp, uint256 _amount) public {
        // Get LP Tokens
        IERC20(_lp).safeTransferFrom(msg.sender, address(this), _amount);

        // Get Uniswap pair
        IUniswapV2Pair fromPair = IUniswapV2Pair(_lp);

        // Only for WETH/<TOKEN> pairs
        if (!(fromPair.token0() == weth || fromPair.token1() == weth)) {
            revert("!eth-from");
        }

        // Remove liquidity
        IERC20(_lp).safeApprove(address(router), 0);
        IERC20(_lp).safeApprove(address(router), _amount);
        router.removeLiquidity(
            fromPair.token0(),
            fromPair.token1(),
            _amount,
            0,
            0,
            address(this),
            now + 60
        );

        // Most premium stablecoin
        (address premiumStablecoin, ) = getMostPremium();

        // Convert weth -> most premium stablecoin
        address[] memory path = new address[](2);
        path[0] = weth;
        path[1] = premiumStablecoin;

        IERC20(weth).safeApprove(address(router), 0);
        IERC20(weth).safeApprove(address(router), uint256(-1));
        router.swapExactTokensForTokens(
            IERC20(weth).balanceOf(address(this)),
            0,
            path,
            address(this),
            now + 60
        );

        // Convert the other asset into stablecoin if its not a stablecoin
        address _from = fromPair.token0() != weth
            ? fromPair.token0()
            : fromPair.token1();

        if (_from != dai && _from != usdc && _from != usdt && _from != susd) {
            path = new address[](3);
            path[0] = _from;
            path[1] = weth;
            path[2] = premiumStablecoin;

            IERC20(_from).safeApprove(address(router), 0);
            IERC20(_from).safeApprove(address(router), uint256(-1));
            router.swapExactTokensForTokens(
                IERC20(_from).balanceOf(address(this)),
                0,
                path,
                address(this),
                now + 60
            );
        }

        // Add liquidity to curve
        IERC20(dai).safeApprove(address(curve), 0);
        IERC20(dai).safeApprove(address(curve), uint256(-1));

        IERC20(usdc).safeApprove(address(curve), 0);
        IERC20(usdc).safeApprove(address(curve), uint256(-1));

        IERC20(usdt).safeApprove(address(curve), 0);
        IERC20(usdt).safeApprove(address(curve), uint256(-1));

        IERC20(susd).safeApprove(address(curve), 0);
        IERC20(susd).safeApprove(address(curve), uint256(-1));

        curve.add_liquidity(
            [
                IERC20(dai).balanceOf(address(this)),
                IERC20(usdc).balanceOf(address(this)),
                IERC20(usdt).balanceOf(address(this)),
                IERC20(susd).balanceOf(address(this))
            ],
            0
        );

        // Sends token back to user
        IERC20(scrv).transfer(
            msg.sender,
            IERC20(scrv).balanceOf(address(this))
        );
    }

    function getMostPremium() public view returns (address, uint256) {
        uint256[] memory balances = new uint256[](4);
        balances[0] = ICurveFi_4(curve).balances(0); // DAI
        balances[1] = ICurveFi_4(curve).balances(1).mul(10**12); // USDC
        balances[2] = ICurveFi_4(curve).balances(2).mul(10**12); // USDT
        balances[3] = ICurveFi_4(curve).balances(3); // sUSD

        // DAI
        if (
            balances[0] < balances[1] &&
            balances[0] < balances[2] &&
            balances[0] < balances[3]
        ) {
            return (dai, 0);
        }

        // USDC
        if (
            balances[1] < balances[0] &&
            balances[1] < balances[2] &&
            balances[1] < balances[3]
        ) {
            return (usdc, 1);
        }

        // USDT
        if (
            balances[2] < balances[0] &&
            balances[2] < balances[1] &&
            balances[2] < balances[3]
        ) {
            return (usdt, 2);
        }

        // SUSD
        if (
            balances[3] < balances[0] &&
            balances[3] < balances[1] &&
            balances[3] < balances[2]
        ) {
            return (susd, 3);
        }

        // If they're somehow equal, we just want DAI
        return (dai, 0);
    }
}

// CurveYCRVVoter: https://etherscan.io/address/0xF147b8125d2ef93FB6965Db97D6746952a133934#code

// SPDX-License-Identifier: MIT
pragma solidity ^0.6.2;

import "../../lib/erc20.sol";
import "../../lib/safe-math.sol";

import "../../interfaces/curve.sol";

contract CRVLocker {
    using SafeERC20 for IERC20;
    using Address for address;
    using SafeMath for uint256;

    address public constant mintr = 0xd061D61a4d941c39E5453435B6345Dc261C2fcE0;
    address public constant crv = 0xD533a949740bb3306d119CC777fa900bA034cd52;

    address public constant escrow = 0x5f3b5DfEb7B28CDbD7FAba78963EE202a494e2A2;

    address public governance;
    mapping(address => bool) public voters;

    constructor(address _governance) public {
        governance = _governance;
    }

    function getName() external pure returns (string memory) {
        return "CRVLocker";
    }

    function addVoter(address _voter) external {
        require(msg.sender == governance, "!governance");
        voters[_voter] = true;
    }

    function removeVoter(address _voter) external {
        require(msg.sender == governance, "!governance");
        voters[_voter] = false;
    }

    function withdraw(address _asset) external returns (uint256 balance) {
        require(voters[msg.sender], "!voter");
        balance = IERC20(_asset).balanceOf(address(this));
        IERC20(_asset).safeTransfer(msg.sender, balance);
    }

    function createLock(uint256 _value, uint256 _unlockTime) external {
        require(voters[msg.sender] || msg.sender == governance, "!authorized");
        IERC20(crv).safeApprove(escrow, 0);
        IERC20(crv).safeApprove(escrow, _value);
        ICurveVotingEscrow(escrow).create_lock(_value, _unlockTime);
    }

    function increaseAmount(uint256 _value) external {
        require(voters[msg.sender] || msg.sender == governance, "!authorized");
        IERC20(crv).safeApprove(escrow, 0);
        IERC20(crv).safeApprove(escrow, _value);
        ICurveVotingEscrow(escrow).increase_amount(_value);
    }

    function increaseUnlockTime(uint256 _unlockTime) external {
        require(voters[msg.sender] || msg.sender == governance, "!authorized");
        ICurveVotingEscrow(escrow).increase_unlock_time(_unlockTime);
    }

    function release() external {
        require(voters[msg.sender] || msg.sender == governance, "!authorized");
        ICurveVotingEscrow(escrow).withdraw();
    }

    function setGovernance(address _governance) external {
        require(msg.sender == governance, "!governance");
        governance = _governance;
    }

    function execute(
        address to,
        uint256 value,
        bytes calldata data
    ) external returns (bool, bytes memory) {
        require(voters[msg.sender] || msg.sender == governance, "!governance");

        (bool success, bytes memory result) = to.call{value: value}(data);
        require(success, "!execute-success");

        return (success, result);
    }
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.6.2;

import "../../lib/erc20.sol";
import "../../lib/safe-math.sol";

import "../../interfaces/jar.sol";
import "../../interfaces/curve.sol";
import "../../interfaces/uniswapv2.sol";
import "../../interfaces/controller.sol";

import "../strategy-curve-base.sol";

contract StrategyCurveRenCRVv2 is StrategyCurveBase {
    // https://www.curve.fi/ren
    // Curve stuff
    address public ren_pool = 0x93054188d876f558f4a66B2EF1d97d16eDf0895B;
    address public ren_gauge = 0xB1F2cdeC61db658F091671F5f199635aEF202CAC;
    address public ren_crv = 0x49849C98ae39Fff122806C06791Fa73784FB3675;

    constructor(
        address _governance,
        address _strategist,
        address _controller,
        address _timelock
    )
        public
        StrategyCurveBase(
            ren_pool,
            ren_gauge,
            ren_crv,
            _governance,
            _strategist,
            _controller,
            _timelock
        )
    {}

    // **** Views ****

    function getMostPremium() public override view returns (address, uint256) {
        // Both 8 decimals, so doesn't matter
        uint256[] memory balances = new uint256[](3);
        balances[0] = ICurveFi_2(curve).balances(0); // RENBTC
        balances[1] = ICurveFi_2(curve).balances(1); // WBTC

        // renbtc
        if (balances[0] < balances[1]) {
            return (renbtc, 0);
        }

        // WBTC
        if (balances[1] < balances[0]) {
            return (wbtc, 1);
        }

        // If they're somehow equal, we just want RENBTC
        return (renbtc, 0);
    }

    function getName() external override pure returns (string memory) {
        return "StrategyCurveRenCRVv2";
    }

    // **** State Mutations ****

    function harvest() public override onlyBenevolent {
        // Anyone can harvest it at any given time.
        // I understand the possibility of being frontrun
        // But ETH is a dark forest, and I wanna see how this plays out
        // i.e. will be be heavily frontrunned?
        //      if so, a new strategy will be deployed.

        // stablecoin we want to convert to
        (address to, uint256 toIndex) = getMostPremium();

        // Collects crv tokens
        // Don't bother voting in v1
        ICurveMintr(mintr).mint(gauge);
        uint256 _crv = IERC20(crv).balanceOf(address(this));
        if (_crv > 0) {
            // x% is sent back to the rewards holder
            // to be used to lock up in as veCRV in a future date
            uint256 _keepCRV = _crv.mul(keepCRV).div(keepCRVMax);
            if (_keepCRV > 0) {
                IERC20(crv).safeTransfer(
                    IController(controller).treasury(),
                    _keepCRV
                );
            }
            _crv = _crv.sub(_keepCRV);
            _swapUniswap(crv, to, _crv);
        }

        // Adds liquidity to curve.fi's pool
        // to get back want (scrv)
        uint256 _to = IERC20(to).balanceOf(address(this));
        if (_to > 0) {
            IERC20(to).safeApprove(curve, 0);
            IERC20(to).safeApprove(curve, _to);
            uint256[2] memory liquidity;
            liquidity[toIndex] = _to;
            ICurveFi_2(curve).add_liquidity(liquidity, 0);
        }

        _distributePerformanceFeesAndDeposit();
    }
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.6.2;

import "../../lib/erc20.sol";
import "../../lib/safe-math.sol";

import "../../interfaces/jar.sol";
import "../../interfaces/curve.sol";
import "../../interfaces/uniswapv2.sol";
import "../../interfaces/controller.sol";

import "../strategy-curve-base.sol";

contract StrategyCurve3CRVv2 is StrategyCurveBase {
    // Curve stuff
    address public three_pool = 0xbEbc44782C7dB0a1A60Cb6fe97d0b483032FF1C7;
    address public three_gauge = 0xbFcF63294aD7105dEa65aA58F8AE5BE2D9d0952A;
    address public three_crv = 0x6c3F90f043a72FA612cbac8115EE7e52BDe6E490;

    constructor(
        address _governance,
        address _strategist,
        address _controller,
        address _timelock
    )
        public
        StrategyCurveBase(
            three_pool,
            three_gauge,
            three_crv,
            _governance,
            _strategist,
            _controller,
            _timelock
        )
    {}

    // **** Views ****

    function getMostPremium()
        public
        override
        view
        returns (address, uint256)
    {
        uint256[] memory balances = new uint256[](3);
        balances[0] = ICurveFi_3(curve).balances(0); // DAI
        balances[1] = ICurveFi_3(curve).balances(1).mul(10**12); // USDC
        balances[2] = ICurveFi_3(curve).balances(2).mul(10**12); // USDT

        // DAI
        if (
            balances[0] < balances[1] &&
            balances[0] < balances[2]
        ) {
            return (dai, 0);
        }

        // USDC
        if (
            balances[1] < balances[0] &&
            balances[1] < balances[2]
        ) {
            return (usdc, 1);
        }

        // USDT
        if (
            balances[2] < balances[0] &&
            balances[2] < balances[1]
        ) {
            return (usdt, 2);
        }

        // If they're somehow equal, we just want DAI
        return (dai, 0);
    }

    function getName() external override pure returns (string memory) {
        return "StrategyCurve3CRVv2";
    }

    // **** State Mutations ****

    function harvest() public onlyBenevolent override {
        // Anyone can harvest it at any given time.
        // I understand the possibility of being frontrun
        // But ETH is a dark forest, and I wanna see how this plays out
        // i.e. will be be heavily frontrunned?
        //      if so, a new strategy will be deployed.

        // stablecoin we want to convert to
        (address to, uint256 toIndex) = getMostPremium();

        // Collects crv tokens
        // Don't bother voting in v1
        ICurveMintr(mintr).mint(gauge);
        uint256 _crv = IERC20(crv).balanceOf(address(this));
        if (_crv > 0) {
            // x% is sent back to the rewards holder
            // to be used to lock up in as veCRV in a future date
            uint256 _keepCRV = _crv.mul(keepCRV).div(keepCRVMax);
            if (_keepCRV > 0) {
                IERC20(crv).safeTransfer(
                    IController(controller).treasury(),
                    _keepCRV
                );
            }
            _crv = _crv.sub(_keepCRV);
            _swapUniswap(crv, to, _crv);
        }

        // Adds liquidity to curve.fi's pool
        // to get back want (scrv)
        uint256 _to = IERC20(to).balanceOf(address(this));
        if (_to > 0) {
            IERC20(to).safeApprove(curve, 0);
            IERC20(to).safeApprove(curve, _to);
            uint256[3] memory liquidity;
            liquidity[toIndex] = _to;
            ICurveFi_3(curve).add_liquidity(liquidity, 0);
        }

        _distributePerformanceFeesAndDeposit();
    }
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.6.2;

import "../../lib/erc20.sol";
import "../../lib/safe-math.sol";

import "./scrv-voter.sol";
import "./crv-locker.sol";

import "../../interfaces/jar.sol";
import "../../interfaces/curve.sol";
import "../../interfaces/uniswapv2.sol";
import "../../interfaces/controller.sol";

import "../strategy-curve-base.sol";

contract StrategyCurveSCRVv3_2 is StrategyCurveBase {
    // Curve stuff
    address public susdv2_pool = 0xA5407eAE9Ba41422680e2e00537571bcC53efBfD;
    address public susdv2_gauge = 0xA90996896660DEcC6E997655E065b23788857849;
    address public scrv = 0xC25a3A3b969415c80451098fa907EC722572917F;

    // Harvesting
    address public snx = 0xC011a73ee8576Fb46F5E1c5751cA3B9Fe0af2a6F;

    constructor(
        address _governance,
        address _strategist,
        address _controller,
        address _timelock
    )
        public
        StrategyCurveBase(
            susdv2_pool,
            susdv2_gauge,
            scrv,
            _governance,
            _strategist,
            _controller,
            _timelock
        )
    {}

    // **** Views ****

    function getMostPremium()
        public
        override
        view
        returns (address, uint256)
    {
        uint256[] memory balances = new uint256[](4);
        balances[0] = ICurveFi_4(curve).balances(0); // DAI
        balances[1] = ICurveFi_4(curve).balances(1).mul(10**12); // USDC
        balances[2] = ICurveFi_4(curve).balances(2).mul(10**12); // USDT
        balances[3] = ICurveFi_4(curve).balances(3); // sUSD

        // DAI
        if (
            balances[0] < balances[1] &&
            balances[0] < balances[2] &&
            balances[0] < balances[3]
        ) {
            return (dai, 0);
        }

        // USDC
        if (
            balances[1] < balances[0] &&
            balances[1] < balances[2] &&
            balances[1] < balances[3]
        ) {
            return (usdc, 1);
        }

        // USDT
        if (
            balances[2] < balances[0] &&
            balances[2] < balances[1] &&
            balances[2] < balances[3]
        ) {
            return (usdt, 2);
        }

        // SUSD
        if (
            balances[3] < balances[0] &&
            balances[3] < balances[1] &&
            balances[3] < balances[2]
        ) {
            return (susd, 3);
        }

        // If they're somehow equal, we just want DAI
        return (dai, 0);
    }

    function getName() external override pure returns (string memory) {
        return "StrategyCurveSCRVv3_2";
    }

    // **** State Mutations ****

    function harvest() public onlyBenevolent override {
        // Anyone can harvest it at any given time.
        // I understand the possibility of being frontrun
        // But ETH is a dark forest, and I wanna see how this plays out
        // i.e. will be be heavily frontrunned?
        //      if so, a new strategy will be deployed.

        // stablecoin we want to convert to
        (address to, uint256 toIndex) = getMostPremium();

        // Collects crv tokens
        // Don't bother voting in v1
        ICurveMintr(mintr).mint(gauge);
        uint256 _crv = IERC20(crv).balanceOf(address(this));
        if (_crv > 0) {
            // x% is sent back to the rewards holder
            // to be used to lock up in as veCRV in a future date
            uint256 _keepCRV = _crv.mul(keepCRV).div(keepCRVMax);
            if (_keepCRV > 0) {
                IERC20(crv).safeTransfer(
                    IController(controller).treasury(),
                    _keepCRV
                );
            }
            _crv = _crv.sub(_keepCRV);
            _swapUniswap(crv, to, _crv);
        }

        // Collects SNX tokens
        ICurveGauge(gauge).claim_rewards(address(this));
        uint256 _snx = IERC20(snx).balanceOf(address(this));
        if (_snx > 0) {
            _swapUniswap(snx, to, _snx);
        }

        // Adds liquidity to curve.fi's susd pool
        // to get back want (scrv)
        uint256 _to = IERC20(to).balanceOf(address(this));
        if (_to > 0) {
            IERC20(to).safeApprove(curve, 0);
            IERC20(to).safeApprove(curve, _to);
            uint256[4] memory liquidity;
            liquidity[toIndex] = _to;
            ICurveFi_4(curve).add_liquidity(liquidity, 0);
        }

        // We want to get back sCRV
        _distributePerformanceFeesAndDeposit();
    }
}

// StrategyProxy: https://etherscan.io/address/0x5886e475e163f78cf63d6683abc7fe8516d12081#code
pragma solidity ^0.6.7;

import "../../lib/erc20.sol";
import "../../lib/safe-math.sol";

import "./crv-locker.sol";

import "../../interfaces/curve.sol";

contract SCRVVoter {
    using SafeERC20 for IERC20;
    using Address for address;
    using SafeMath for uint256;

    CRVLocker public crvLocker;

    address public constant want = 0xC25a3A3b969415c80451098fa907EC722572917F;
    address public constant mintr = 0xd061D61a4d941c39E5453435B6345Dc261C2fcE0;
    address public constant crv = 0xD533a949740bb3306d119CC777fa900bA034cd52;
    address public constant snx = 0xC011a73ee8576Fb46F5E1c5751cA3B9Fe0af2a6F;
    address
        public constant gaugeController = 0x2F50D538606Fa9EDD2B11E2446BEb18C9D5846bB;
    address
        public constant scrvGauge = 0xA90996896660DEcC6E997655E065b23788857849;

    mapping(address => bool) public strategies;
    address public governance;

    constructor(address _governance, address _crvLocker) public {
        governance = _governance;
        crvLocker = CRVLocker(_crvLocker);
    }

    function setGovernance(address _governance) external {
        require(msg.sender == governance, "!governance");
        governance = _governance;
    }

    function approveStrategy(address _strategy) external {
        require(msg.sender == governance, "!governance");
        strategies[_strategy] = true;
    }

    function revokeStrategy(address _strategy) external {
        require(msg.sender == governance, "!governance");
        strategies[_strategy] = false;
    }

    function lock() external {
        crvLocker.increaseAmount(IERC20(crv).balanceOf(address(crvLocker)));
    }

    function vote(address _gauge, uint256 _amount) public {
        require(strategies[msg.sender], "!strategy");
        crvLocker.execute(
            gaugeController,
            0,
            abi.encodeWithSignature(
                "vote_for_gauge_weights(address,uint256)",
                _gauge,
                _amount
            )
        );
    }

    function max() external {
        require(strategies[msg.sender], "!strategy");
        vote(scrvGauge, 10000);
    }

    function withdraw(
        address _gauge,
        address _token,
        uint256 _amount
    ) public returns (uint256) {
        require(strategies[msg.sender], "!strategy");
        uint256 _before = IERC20(_token).balanceOf(address(crvLocker));
        crvLocker.execute(
            _gauge,
            0,
            abi.encodeWithSignature("withdraw(uint256)", _amount)
        );
        uint256 _after = IERC20(_token).balanceOf(address(crvLocker));
        uint256 _net = _after.sub(_before);
        crvLocker.execute(
            _token,
            0,
            abi.encodeWithSignature(
                "transfer(address,uint256)",
                msg.sender,
                _net
            )
        );
        return _net;
    }

    function balanceOf(address _gauge) public view returns (uint256) {
        return IERC20(_gauge).balanceOf(address(crvLocker));
    }

    function withdrawAll(address _gauge, address _token)
        external
        returns (uint256)
    {
        require(strategies[msg.sender], "!strategy");
        return withdraw(_gauge, _token, balanceOf(_gauge));
    }

    function deposit(address _gauge, address _token) external {
        uint256 _balance = IERC20(_token).balanceOf(address(this));
        IERC20(_token).safeTransfer(address(crvLocker), _balance);

        _balance = IERC20(_token).balanceOf(address(crvLocker));
        crvLocker.execute(
            _token,
            0,
            abi.encodeWithSignature("approve(address,uint256)", _gauge, 0)
        );
        crvLocker.execute(
            _token,
            0,
            abi.encodeWithSignature(
                "approve(address,uint256)",
                _gauge,
                _balance
            )
        );
        crvLocker.execute(
            _gauge,
            0,
            abi.encodeWithSignature("deposit(uint256)", _balance)
        );
    }

    function harvest(address _gauge) external {
        require(strategies[msg.sender], "!strategy");
        uint256 _before = IERC20(crv).balanceOf(address(crvLocker));
        crvLocker.execute(
            mintr,
            0,
            abi.encodeWithSignature("mint(address)", _gauge)
        );
        uint256 _after = IERC20(crv).balanceOf(address(crvLocker));
        uint256 _balance = _after.sub(_before);
        crvLocker.execute(
            crv,
            0,
            abi.encodeWithSignature(
                "transfer(address,uint256)",
                msg.sender,
                _balance
            )
        );
    }

    function claimRewards() external {
        require(strategies[msg.sender], "!strategy");

        uint256 _before = IERC20(snx).balanceOf(address(crvLocker));
        crvLocker.execute(scrvGauge, 0, abi.encodeWithSignature("claim_rewards()"));
        uint256 _after = IERC20(snx).balanceOf(address(crvLocker));
        uint256 _balance = _after.sub(_before);

        crvLocker.execute(
            snx,
            0,
            abi.encodeWithSignature(
                "transfer(address,uint256)",
                msg.sender,
                _balance
            )
        );
    }
}

// https://etherscan.io/address/0x594a198048501a304267e63b3bad0f0638da7628#code

// SPDX-License-Identifier: MIT
pragma solidity ^0.6.2;

import "../../lib/erc20.sol";
import "../../lib/safe-math.sol";

import "./scrv-voter.sol";
import "./crv-locker.sol";

import "../../interfaces/jar.sol";
import "../../interfaces/curve.sol";
import "../../interfaces/uniswapv2.sol";
import "../../interfaces/controller.sol";

import "../strategy-base.sol";

contract StrategyCurveSCRVv4_1 is StrategyBase {
    // Curve
    address public scrv = 0xC25a3A3b969415c80451098fa907EC722572917F;
    address public susdv2_gauge = 0xA90996896660DEcC6E997655E065b23788857849;
    address public susdv2_pool = 0xA5407eAE9Ba41422680e2e00537571bcC53efBfD;
    address public escrow = 0x5f3b5DfEb7B28CDbD7FAba78963EE202a494e2A2;

    // curve dao
    address public gauge;
    address public curve;
    address public mintr = 0xd061D61a4d941c39E5453435B6345Dc261C2fcE0;

    // tokens we're farming
    address public constant crv = 0xD533a949740bb3306d119CC777fa900bA034cd52;
    address public constant snx = 0xC011a73ee8576Fb46F5E1c5751cA3B9Fe0af2a6F;

    // stablecoins
    address public dai = 0x6B175474E89094C44Da98b954EedeAC495271d0F;
    address public usdc = 0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48;
    address public usdt = 0xdAC17F958D2ee523a2206206994597C13D831ec7;
    address public susd = 0x57Ab1ec28D129707052df4dF418D58a2D46d5f51;

    // How much CRV tokens to keep
    uint256 public keepCRV = 500;
    uint256 public keepCRVMax = 10000;

    // crv-locker and voter
    address public scrvVoter;
    address public crvLocker;

    constructor(
        address _scrvVoter,
        address _crvLocker,
        address _governance,
        address _strategist,
        address _controller,
        address _timelock
    )
        public
        StrategyBase(scrv, _governance, _strategist, _controller, _timelock)
    {
        curve = susdv2_pool;
        gauge = susdv2_gauge;

        scrvVoter = _scrvVoter;
        crvLocker = _crvLocker;
    }

    // **** Getters ****

    function balanceOfPool() public override view returns (uint256) {
        return SCRVVoter(scrvVoter).balanceOf(gauge);
    }

    function getName() external override pure returns (string memory) {
        return "StrategyCurveSCRVv4_1";
    }

    function getHarvestable() external returns (uint256) {
        return ICurveGauge(gauge).claimable_tokens(crvLocker);
    }

    function getMostPremium() public view returns (address, uint8) {
        uint256[] memory balances = new uint256[](4);
        balances[0] = ICurveFi_4(curve).balances(0); // DAI
        balances[1] = ICurveFi_4(curve).balances(1).mul(10**12); // USDC
        balances[2] = ICurveFi_4(curve).balances(2).mul(10**12); // USDT
        balances[3] = ICurveFi_4(curve).balances(3); // sUSD

        // DAI
        if (
            balances[0] < balances[1] &&
            balances[0] < balances[2] &&
            balances[0] < balances[3]
        ) {
            return (dai, 0);
        }

        // USDC
        if (
            balances[1] < balances[0] &&
            balances[1] < balances[2] &&
            balances[1] < balances[3]
        ) {
            return (usdc, 1);
        }

        // USDT
        if (
            balances[2] < balances[0] &&
            balances[2] < balances[1] &&
            balances[2] < balances[3]
        ) {
            return (usdt, 2);
        }

        // SUSD
        if (
            balances[3] < balances[0] &&
            balances[3] < balances[1] &&
            balances[3] < balances[2]
        ) {
            return (susd, 3);
        }

        // If they're somehow equal, we just want DAI
        return (dai, 0);
    }

    // **** Setters ****

    function setKeepCRV(uint256 _keepCRV) external {
        require(msg.sender == governance, "!governance");
        keepCRV = _keepCRV;
    }

    // **** State Mutations ****

    function deposit() public override {
        uint256 _want = IERC20(want).balanceOf(address(this));
        if (_want > 0) {
            IERC20(want).safeTransfer(scrvVoter, _want);
            SCRVVoter(scrvVoter).deposit(gauge, want);
        }
    }

    function _withdrawSome(uint256 _amount)
        internal
        override
        returns (uint256)
    {
        return SCRVVoter(scrvVoter).withdraw(gauge, want, _amount);
    }

    function harvest() public override onlyBenevolent {
        // Anyone can harvest it at any given time.
        // I understand the possibility of being frontrun / sandwiched
        // But ETH is a dark forest, and I wanna see how this plays out
        // i.e. will be be heavily frontrunned/sandwiched?
        //      if so, a new strategy will be deployed.

        // stablecoin we want to convert to
        (address to, uint256 toIndex) = getMostPremium();

        // Collects crv tokens
        // Don't bother voting in v1
        SCRVVoter(scrvVoter).harvest(gauge);
        uint256 _crv = IERC20(crv).balanceOf(address(this));
        if (_crv > 0) {
            // How much CRV to keep to restake?
            uint256 _keepCRV = _crv.mul(keepCRV).div(keepCRVMax);
            IERC20(crv).safeTransfer(address(crvLocker), _keepCRV);

            // How much CRV to swap?
            _crv = _crv.sub(_keepCRV);
            _swapUniswap(crv, to, _crv);
        }

        // Collects SNX tokens
        SCRVVoter(scrvVoter).claimRewards();
        uint256 _snx = IERC20(snx).balanceOf(address(this));
        if (_snx > 0) {
            _swapUniswap(snx, to, _snx);
        }

        // Adds liquidity to curve.fi's susd pool
        // to get back want (scrv)
        uint256 _to = IERC20(to).balanceOf(address(this));
        if (_to > 0) {
            IERC20(to).safeApprove(curve, 0);
            IERC20(to).safeApprove(curve, _to);
            uint256[4] memory liquidity;
            liquidity[toIndex] = _to;
            ICurveFi_4(curve).add_liquidity(liquidity, 0);
        }

        // We want to get back sCRV
        _distributePerformanceFeesAndDeposit();
    }
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.6.7;

import "./strategy-base.sol";

import "../interfaces/curve.sol";

// Base contract for Curve based staking contract interfaces

abstract contract StrategyCurveBase is StrategyBase {
    // curve dao
    address public gauge;
    address public curve;
    address public mintr = 0xd061D61a4d941c39E5453435B6345Dc261C2fcE0;

    // stablecoins
    address public dai = 0x6B175474E89094C44Da98b954EedeAC495271d0F;
    address public usdc = 0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48;
    address public usdt = 0xdAC17F958D2ee523a2206206994597C13D831ec7;
    address public susd = 0x57Ab1ec28D129707052df4dF418D58a2D46d5f51;

    // bitcoins
    address public wbtc = 0x2260FAC5E5542a773Aa44fBCfeDf7C193bc2C599;
    address public renbtc = 0xEB4C2781e4ebA804CE9a9803C67d0893436bB27D;

    // rewards
    address public crv = 0xD533a949740bb3306d119CC777fa900bA034cd52;

    // How much CRV tokens to keep
    uint256 public keepCRV = 0;
    uint256 public keepCRVMax = 10000;

    constructor(
        address _curve,
        address _gauge,
        address _want,
        address _governance,
        address _strategist,
        address _controller,
        address _timelock
    )
        public
        StrategyBase(_want, _governance, _strategist, _controller, _timelock)
    {
        curve = _curve;
        gauge = _gauge;
    }

    // **** Getters ****

    function balanceOfPool() public override view returns (uint256) {
        return ICurveGauge(gauge).balanceOf(address(this));
    }

    function getHarvestable() external returns (uint256) {
        return ICurveGauge(gauge).claimable_tokens(address(this));
    }

    function getMostPremium() public virtual view returns (address, uint256);

    // **** Setters ****

    function setKeepCRV(uint256 _keepCRV) external {
        require(msg.sender == governance, "!governance");
        keepCRV = _keepCRV;
    }

    // **** State Mutation functions ****

    function deposit() public override {
        uint256 _want = IERC20(want).balanceOf(address(this));
        if (_want > 0) {
            IERC20(want).safeApprove(gauge, 0);
            IERC20(want).safeApprove(gauge, _want);
            ICurveGauge(gauge).deposit(_want);
        }
    }

    function _withdrawSome(uint256 _amount)
        internal
        override
        returns (uint256)
    {
        ICurveGauge(gauge).withdraw(_amount);
        return _amount;
    }
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.6.2;

import "../../lib/erc20.sol";
import "../../lib/safe-math.sol";
import "../../lib/exponential.sol";

import "../strategy-base.sol";

import "../../interfaces/jar.sol";
import "../../interfaces/uniswapv2.sol";
import "../../interfaces/controller.sol";
import "../../interfaces/compound.sol";

contract StrategyCmpdDaiV2 is StrategyBase, Exponential {
    address
        public constant comptroller = 0x3d9819210A31b4961b30EF54bE2aeD79B9c9Cd3B;
    address public constant lens = 0xd513d22422a3062Bd342Ae374b4b9c20E0a9a074;
    address public constant dai = 0x6B175474E89094C44Da98b954EedeAC495271d0F;
    address public constant comp = 0xc00e94Cb662C3520282E6f5717214004A7f26888;
    address public constant cdai = 0x5d3a536E4D6DbD6114cc1Ead35777bAB948E3643;
    address public constant cether = 0x4Ddc2D193948926D02f9B1fE9e1daa0718270ED5;

    // Require a 0.1 buffer between
    // market collateral factor and strategy's collateral factor
    // when leveraging
    uint256 colFactorLeverageBuffer = 100;
    uint256 colFactorLeverageBufferMax = 1000;

    // Allow a 0.05 buffer
    // between market collateral factor and strategy's collateral factor
    // until we have to deleverage
    // This is so we can hit max leverage and keep accruing interest
    uint256 colFactorSyncBuffer = 50;
    uint256 colFactorSyncBufferMax = 1000;

    // Keeper bots
    // Maintain leverage within buffer
    mapping(address => bool) keepers;

    constructor(
        address _governance,
        address _strategist,
        address _controller,
        address _timelock
    )
        public
        StrategyBase(dai, _governance, _strategist, _controller, _timelock)
    {
        // Enter cDAI Market
        address[] memory ctokens = new address[](1);
        ctokens[0] = cdai;
        IComptroller(comptroller).enterMarkets(ctokens);
    }

    // **** Modifiers **** //

    modifier onlyKeepers {
        require(
            keepers[msg.sender] ||
                msg.sender == address(this) ||
                msg.sender == strategist ||
                msg.sender == governance,
            "!keepers"
        );
        _;
    }

    // **** Views **** //

    function getName() external override pure returns (string memory) {
        return "StrategyCmpdDaiV2";
    }

    function getSuppliedView() public view returns (uint256) {
        (, uint256 cTokenBal, , uint256 exchangeRate) = ICToken(cdai)
            .getAccountSnapshot(address(this));

        (, uint256 bal) = mulScalarTruncate(
            Exp({mantissa: exchangeRate}),
            cTokenBal
        );

        return bal;
    }

    function getBorrowedView() public view returns (uint256) {
        return ICToken(cdai).borrowBalanceStored(address(this));
    }

    function balanceOfPool() public override view returns (uint256) {
        uint256 supplied = getSuppliedView();
        uint256 borrowed = getBorrowedView();
        return supplied.sub(borrowed);
    }

    // Given an unleveraged supply balance, return the target
    // leveraged supply balance which is still within the safety buffer
    function getLeveragedSupplyTarget(uint256 supplyBalance)
        public
        view
        returns (uint256)
    {
        uint256 leverage = getMaxLeverage();
        return supplyBalance.mul(leverage).div(1e18);
    }

    function getSafeLeverageColFactor() public view returns (uint256) {
        uint256 colFactor = getMarketColFactor();

        // Collateral factor within the buffer
        uint256 safeColFactor = colFactor.sub(
            colFactorLeverageBuffer.mul(1e18).div(colFactorLeverageBufferMax)
        );

        return safeColFactor;
    }

    function getSafeSyncColFactor() public view returns (uint256) {
        uint256 colFactor = getMarketColFactor();

        // Collateral factor within the buffer
        uint256 safeColFactor = colFactor.sub(
            colFactorSyncBuffer.mul(1e18).div(colFactorSyncBufferMax)
        );

        return safeColFactor;
    }

    function getMarketColFactor() public view returns (uint256) {
        (, uint256 colFactor) = IComptroller(comptroller).markets(cdai);

        return colFactor;
    }

    // Max leverage we can go up to, w.r.t safe buffer
    function getMaxLeverage() public view returns (uint256) {
        uint256 safeLeverageColFactor = getSafeLeverageColFactor();

        // Infinite geometric series
        uint256 leverage = uint256(1e36).div(1e18 - safeLeverageColFactor);
        return leverage;
    }

    // **** Pseudo-view functions (use `callStatic` on these) **** //
    /* The reason why these exists is because of the nature of the
       interest accruing supply + borrow balance. The "view" methods
       are technically snapshots and don't represent the real value.
       As such there are pseudo view methods where you can retrieve the
       results by calling `callStatic`.
    */

    function getCompAccrued() public returns (uint256) {
        (, , , uint256 accrued) = ICompoundLens(lens).getCompBalanceMetadataExt(
            comp,
            comptroller,
            address(this)
        );

        return accrued;
    }

    function getColFactor() public returns (uint256) {
        uint256 supplied = getSupplied();
        uint256 borrowed = getBorrowed();

        return borrowed.mul(1e18).div(supplied);
    }

    function getSuppliedUnleveraged() public returns (uint256) {
        uint256 supplied = getSupplied();
        uint256 borrowed = getBorrowed();

        return supplied.sub(borrowed);
    }

    function getSupplied() public returns (uint256) {
        return ICToken(cdai).balanceOfUnderlying(address(this));
    }

    function getBorrowed() public returns (uint256) {
        return ICToken(cdai).borrowBalanceCurrent(address(this));
    }

    function getBorrowable() public returns (uint256) {
        uint256 supplied = getSupplied();
        uint256 borrowed = getBorrowed();

        (, uint256 colFactor) = IComptroller(comptroller).markets(cdai);

        // 99.99% just in case some dust accumulates
        return
            supplied.mul(colFactor).div(1e18).sub(borrowed).mul(9999).div(
                10000
            );
    }

    function getCurrentLeverage() public returns (uint256) {
        uint256 supplied = getSupplied();
        uint256 borrowed = getBorrowed();

        return supplied.mul(1e18).div(supplied.sub(borrowed));
    }

    // **** Setters **** //

    function addKeeper(address _keeper) public {
        require(
            msg.sender == governance || msg.sender == strategist,
            "!governance"
        );
        keepers[_keeper] = true;
    }

    function removeKeeper(address _keeper) public {
        require(
            msg.sender == governance || msg.sender == strategist,
            "!governance"
        );
        keepers[_keeper] = false;
    }

    function setColFactorLeverageBuffer(uint256 _colFactorLeverageBuffer)
        public
    {
        require(
            msg.sender == governance || msg.sender == strategist,
            "!governance"
        );
        colFactorLeverageBuffer = _colFactorLeverageBuffer;
    }

    function setColFactorSyncBuffer(uint256 _colFactorSyncBuffer) public {
        require(
            msg.sender == governance || msg.sender == strategist,
            "!governance"
        );
        colFactorSyncBuffer = _colFactorSyncBuffer;
    }

    // **** State mutations **** //

    // Do a `callStatic` on this.
    // If it returns true then run it for realz. (i.e. eth_signedTx, not eth_call)
    function sync() public returns (bool) {
        uint256 colFactor = getColFactor();
        uint256 safeSyncColFactor = getSafeSyncColFactor();

        // If we're not safe
        if (colFactor > safeSyncColFactor) {
            uint256 unleveragedSupply = getSuppliedUnleveraged();
            uint256 idealSupply = getLeveragedSupplyTarget(unleveragedSupply);

            deleverageUntil(idealSupply);

            return true;
        }

        return false;
    }

    function leverageToMax() public {
        uint256 unleveragedSupply = getSuppliedUnleveraged();
        uint256 idealSupply = getLeveragedSupplyTarget(unleveragedSupply);
        leverageUntil(idealSupply);
    }

    // Leverages until we're supplying <x> amount
    // 1. Redeem <x> DAI
    // 2. Repay <x> DAI
    function leverageUntil(uint256 _supplyAmount) public onlyKeepers {
        // 1. Borrow out <X> DAI
        // 2. Supply <X> DAI

        uint256 leverage = getMaxLeverage();
        uint256 unleveragedSupply = getSuppliedUnleveraged();
        require(
            _supplyAmount >= unleveragedSupply &&
                _supplyAmount <= unleveragedSupply.mul(leverage).div(1e18),
            "!leverage"
        );

        // Since we're only leveraging one asset
        // Supplied = borrowed
        uint256 _borrowAndSupply;
        uint256 supplied = getSupplied();
        while (supplied < _supplyAmount) {
            _borrowAndSupply = getBorrowable();

            if (supplied.add(_borrowAndSupply) > _supplyAmount) {
                _borrowAndSupply = _supplyAmount.sub(supplied);
            }

            ICToken(cdai).borrow(_borrowAndSupply);
            deposit();

            supplied = supplied.add(_borrowAndSupply);
        }
    }

    function deleverageToMin() public {
        uint256 unleveragedSupply = getSuppliedUnleveraged();
        deleverageUntil(unleveragedSupply);
    }

    // Deleverages until we're supplying <x> amount
    // 1. Redeem <x> DAI
    // 2. Repay <x> DAI
    function deleverageUntil(uint256 _supplyAmount) public onlyKeepers {
        uint256 unleveragedSupply = getSuppliedUnleveraged();
        uint256 supplied = getSupplied();
        require(
            _supplyAmount >= unleveragedSupply && _supplyAmount <= supplied,
            "!deleverage"
        );

        // Since we're only leveraging on 1 asset
        // redeemable = borrowable
        uint256 _redeemAndRepay = getBorrowable();
        do {
            if (supplied.sub(_redeemAndRepay) < _supplyAmount) {
                _redeemAndRepay = supplied.sub(_supplyAmount);
            }

            require(
                ICToken(cdai).redeemUnderlying(_redeemAndRepay) == 0,
                "!redeem"
            );
            IERC20(dai).safeApprove(cdai, 0);
            IERC20(dai).safeApprove(cdai, _redeemAndRepay);
            require(ICToken(cdai).repayBorrow(_redeemAndRepay) == 0, "!repay");

            supplied = supplied.sub(_redeemAndRepay);
        } while (supplied > _supplyAmount);
    }

    function harvest() public override onlyBenevolent {
        address[] memory ctokens = new address[](1);
        ctokens[0] = cdai;

        IComptroller(comptroller).claimComp(address(this), ctokens);
        uint256 _comp = IERC20(comp).balanceOf(address(this));
        if (_comp > 0) {
            _swapUniswap(comp, want, _comp);
        }

        _distributePerformanceFeesAndDeposit();
    }

    function deposit() public override {
        uint256 _want = IERC20(want).balanceOf(address(this));
        if (_want > 0) {
            IERC20(want).safeApprove(cdai, 0);
            IERC20(want).safeApprove(cdai, _want);
            require(ICToken(cdai).mint(_want) == 0, "!deposit");
        }
    }

    function _withdrawSome(uint256 _amount)
        internal
        override
        returns (uint256)
    {
        uint256 _want = balanceOfWant();
        if (_want < _amount) {
            uint256 _redeem = _amount.sub(_want);

            // Make sure market can cover liquidity
            require(ICToken(cdai).getCash() >= _redeem, "!cash-liquidity");

            // How much borrowed amount do we need to free?
            uint256 borrowed = getBorrowed();
            uint256 supplied = getSupplied();
            uint256 curLeverage = getCurrentLeverage();
            uint256 borrowedToBeFree = _redeem.mul(curLeverage).div(1e18);

            // If the amount we need to free is > borrowed
            // Just free up all the borrowed amount
            if (borrowedToBeFree > borrowed) {
                this.deleverageToMin();
            } else {
                // Otherwise just keep freeing up borrowed amounts until
                // we hit a safe number to redeem our underlying
                this.deleverageUntil(supplied.sub(borrowedToBeFree));
            }

            // Redeems underlying
            require(ICToken(cdai).redeemUnderlying(_redeem) == 0, "!redeem");
        }

        return _amount;
    }
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.6.2;

import "../strategy-uni-farm-base.sol";

contract StrategyUniEthWBtcLpV2 is StrategyUniFarmBase {
    // Token addresses
    address public uni_rewards = 0xCA35e32e7926b96A9988f61d510E038108d8068e;
    address public uni_eth_wbtc_lp = 0xBb2b8038a1640196FbE3e38816F3e67Cba72D940;
    address public wbtc = 0x2260FAC5E5542a773Aa44fBCfeDf7C193bc2C599;

    constructor(
        address _governance,
        address _strategist,
        address _controller,
        address _timelock
    )
        public
        StrategyUniFarmBase(
            wbtc,
            uni_rewards,
            uni_eth_wbtc_lp,
            _governance,
            _strategist,
            _controller,
            _timelock
        )
    {}

    // **** Views ****

    function getName() external override pure returns (string memory) {
        return "StrategyUniEthWBtcLpV2";
    }
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.6.2;

import "../strategy-uni-farm-base.sol";

contract StrategyUniEthUsdcLpV4 is StrategyUniFarmBase {
    // Token addresses
    address public uni_rewards = 0x7FBa4B8Dc5E7616e59622806932DBea72537A56b;
    address public uni_eth_usdc_lp = 0xB4e16d0168e52d35CaCD2c6185b44281Ec28C9Dc;
    address public usdc = 0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48;

    constructor(
        address _governance,
        address _strategist,
        address _controller,
        address _timelock
    )
        public
        StrategyUniFarmBase(
            usdc,
            uni_rewards,
            uni_eth_usdc_lp,
            _governance,
            _strategist,
            _controller,
            _timelock
        )
    {}

    // **** Views ****

    function getName() external override pure returns (string memory) {
        return "StrategyUniEthUsdcLpV4";
    }
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.6.7;

import "../strategy-uni-farm-base.sol";

contract StrategyUniEthDaiLpV4 is StrategyUniFarmBase {
    // Token addresses
    address public uni_rewards = 0xa1484C3aa22a66C62b77E0AE78E15258bd0cB711;
    address public uni_eth_dai_lp = 0xA478c2975Ab1Ea89e8196811F51A7B7Ade33eB11;
    address public dai = 0x6B175474E89094C44Da98b954EedeAC495271d0F;

    constructor(
        address _governance,
        address _strategist,
        address _controller,
        address _timelock
    )
        public
        StrategyUniFarmBase(
            dai,
            uni_rewards,
            uni_eth_dai_lp,
            _governance,
            _strategist,
            _controller,
            _timelock
        )
    {}

    // **** Views ****

    function getName() external override pure returns (string memory) {
        return "StrategyUniEthDaiLpV4";
    }
}

pragma solidity ^0.6.7;

import "../lib/erc20.sol";
import "../lib/safe-math.sol";

import "../interfaces/jar.sol";
import "../interfaces/staking-rewards.sol";
import "../interfaces/uniswapv2.sol";
import "../interfaces/controller.sol";

// Strategy Contract Basics

abstract contract StrategyBase {
    using SafeERC20 for IERC20;
    using Address for address;
    using SafeMath for uint256;

    // Perfomance fees - start with 4.5%
    uint256 public performanceTreasuryFee = 450;
    uint256 public constant performanceTreasuryMax = 10000;

    uint256 public performanceDevFee = 0;
    uint256 public constant performanceDevMax = 10000;

    // Withdrawal fee 0.5%
    // - 0.325% to treasury
    // - 0.175% to dev fund
    uint256 public withdrawalTreasuryFee = 325;
    uint256 public constant withdrawalTreasuryMax = 100000;

    uint256 public withdrawalDevFundFee = 175;
    uint256 public constant withdrawalDevFundMax = 100000;

    // Tokens
    address public want;
    address public constant weth = 0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2;

    // User accounts
    address public governance;
    address public controller;
    address public strategist;
    address public timelock;

    // Dex
    address public univ2Router2 = 0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D;

    constructor(
        address _want,
        address _governance,
        address _strategist,
        address _controller,
        address _timelock
    ) public {
        require(_want != address(0));
        require(_governance != address(0));
        require(_strategist != address(0));
        require(_controller != address(0));
        require(_timelock != address(0));

        want = _want;
        governance = _governance;
        strategist = _strategist;
        controller = _controller;
        timelock = _timelock;
    }

    // **** Modifiers **** //

    modifier onlyBenevolent {
        require(
            msg.sender == tx.origin ||
                msg.sender == governance ||
                msg.sender == strategist
        );
        _;
    }

    // **** Views **** //

    function balanceOfWant() public view returns (uint256) {
        return IERC20(want).balanceOf(address(this));
    }

    function balanceOfPool() public virtual view returns (uint256);

    function balanceOf() public view returns (uint256) {
        return balanceOfWant().add(balanceOfPool());
    }

    function getName() external virtual pure returns (string memory);

    // **** Setters **** //

    function setWithdrawalDevFundFee(uint256 _withdrawalDevFundFee) external {
        require(msg.sender == timelock, "!timelock");
        withdrawalDevFundFee = _withdrawalDevFundFee;
    }

    function setWithdrawalTreasuryFee(uint256 _withdrawalTreasuryFee) external {
        require(msg.sender == timelock, "!timelock");
        withdrawalTreasuryFee = _withdrawalTreasuryFee;
    }

    function setPerformanceDevFee(uint256 _performanceDevFee) external {
        require(msg.sender == timelock, "!timelock");
        performanceDevFee = _performanceDevFee;
    }

    function setPerformanceTreasuryFee(uint256 _performanceTreasuryFee)
        external
    {
        require(msg.sender == timelock, "!timelock");
        performanceTreasuryFee = _performanceTreasuryFee;
    }

    function setStrategist(address _strategist) external {
        require(msg.sender == governance, "!governance");
        strategist = _strategist;
    }

    function setGovernance(address _governance) external {
        require(msg.sender == governance, "!governance");
        governance = _governance;
    }

    function setTimelock(address _timelock) external {
        require(msg.sender == timelock, "!timelock");
        timelock = _timelock;
    }

    function setController(address _controller) external {
        require(msg.sender == timelock, "!timelock");
        controller = _controller;
    }

    // **** State mutations **** //
    function deposit() public virtual;

    // Controller only function for creating additional rewards from dust
    function withdraw(IERC20 _asset) external returns (uint256 balance) {
        require(msg.sender == controller, "!controller");
        require(want != address(_asset), "want");
        balance = _asset.balanceOf(address(this));
        _asset.safeTransfer(controller, balance);
    }

    // Withdraw partial funds, normally used with a jar withdrawal
    function withdraw(uint256 _amount) external {
        require(msg.sender == controller, "!controller");
        uint256 _balance = IERC20(want).balanceOf(address(this));
        if (_balance < _amount) {
            _amount = _withdrawSome(_amount.sub(_balance));
            _amount = _amount.add(_balance);
        }

        uint256 _feeDev = _amount.mul(withdrawalDevFundFee).div(
            withdrawalDevFundMax
        );
        IERC20(want).safeTransfer(IController(controller).devfund(), _feeDev);

        uint256 _feeTreasury = _amount.mul(withdrawalTreasuryFee).div(
            withdrawalTreasuryMax
        );
        IERC20(want).safeTransfer(
            IController(controller).treasury(),
            _feeTreasury
        );

        address _jar = IController(controller).jars(address(want));
        require(_jar != address(0), "!jar"); // additional protection so we don't burn the funds

        IERC20(want).safeTransfer(_jar, _amount.sub(_feeDev).sub(_feeTreasury));
    }

    // Withdraw funds, used to swap between strategies
    function withdrawForSwap(uint256 _amount)
        external
        returns (uint256 balance)
    {
        require(msg.sender == controller, "!controller");
        _withdrawSome(_amount);

        balance = IERC20(want).balanceOf(address(this));

        address _jar = IController(controller).jars(address(want));
        require(_jar != address(0), "!jar");
        IERC20(want).safeTransfer(_jar, balance);
    }

    // Withdraw all funds, normally used when migrating strategies
    function withdrawAll() external returns (uint256 balance) {
        require(msg.sender == controller, "!controller");
        _withdrawAll();

        balance = IERC20(want).balanceOf(address(this));

        address _jar = IController(controller).jars(address(want));
        require(_jar != address(0), "!jar"); // additional protection so we don't burn the funds
        IERC20(want).safeTransfer(_jar, balance);
    }

    function _withdrawAll() internal {
        _withdrawSome(balanceOfPool());
    }

    function _withdrawSome(uint256 _amount) internal virtual returns (uint256);

    function harvest() public virtual;

    // **** Emergency functions ****

    function execute(address _target, bytes memory _data)
        public
        payable
        returns (bytes memory response)
    {
        require(msg.sender == timelock, "!timelock");
        require(_target != address(0), "!target");

        // call contract in current context
        assembly {
            let succeeded := delegatecall(
                sub(gas(), 5000),
                _target,
                add(_data, 0x20),
                mload(_data),
                0,
                0
            )
            let size := returndatasize()

            response := mload(0x40)
            mstore(
                0x40,
                add(response, and(add(add(size, 0x20), 0x1f), not(0x1f)))
            )
            mstore(response, size)
            returndatacopy(add(response, 0x20), 0, size)

            switch iszero(succeeded)
                case 1 {
                    // throw if delegatecall failed
                    revert(add(response, 0x20), size)
                }
        }
    }

    // **** Internal functions ****
    function _swapUniswap(
        address _from,
        address _to,
        uint256 _amount
    ) internal {
        require(_to != address(0));

        // Swap with uniswap
        IERC20(_from).safeApprove(univ2Router2, 0);
        IERC20(_from).safeApprove(univ2Router2, _amount);

        address[] memory path;

        if (_from == weth || _to == weth) {
            path = new address[](2);
            path[0] = _from;
            path[1] = _to;
        } else {
            path = new address[](3);
            path[0] = _from;
            path[1] = weth;
            path[2] = _to;
        }

        UniswapRouterV2(univ2Router2).swapExactTokensForTokens(
            _amount,
            0,
            path,
            address(this),
            now.add(60)
        );
    }

    function _distributePerformanceFeesAndDeposit() internal {
        uint256 _want = IERC20(want).balanceOf(address(this));

        if (_want > 0) {
            // Treasury fees
            IERC20(want).safeTransfer(
                IController(controller).treasury(),
                _want.mul(performanceTreasuryFee).div(performanceTreasuryMax)
            );

            // Performance fee
            IERC20(want).safeTransfer(
                IController(controller).devfund(),
                _want.mul(performanceDevFee).div(performanceDevMax)
            );

            deposit();
        }
    }
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.6.7;

import "./strategy-staking-rewards-base.sol";

abstract contract StrategyUniFarmBase is StrategyStakingRewardsBase {
    // Token addresses
    address public uni = 0x1f9840a85d5aF5bf1D1762F925BDADdC4201F984;

    // WETH/<token1> pair
    address public token1;

    // How much UNI tokens to keep?
    uint256 public keepUNI = 0;
    uint256 public constant keepUNIMax = 10000;

    constructor(
        address _token1,
        address _rewards,
        address _lp,
        address _governance,
        address _strategist,
        address _controller,
        address _timelock
    )
        public
        StrategyStakingRewardsBase(
            _rewards,
            _lp,
            _governance,
            _strategist,
            _controller,
            _timelock
        )
    {
        token1 = _token1;
    }

    // **** Setters ****

    function setKeepUNI(uint256 _keepUNI) external {
        require(msg.sender == timelock, "!timelock");
        keepUNI = _keepUNI;
    }

    // **** State Mutations ****

    function harvest() public override onlyBenevolent {
        // Anyone can harvest it at any given time.
        // I understand the possibility of being frontrun
        // But ETH is a dark forest, and I wanna see how this plays out
        // i.e. will be be heavily frontrunned?
        //      if so, a new strategy will be deployed.

        // Collects UNI tokens
        IStakingRewards(rewards).getReward();
        uint256 _uni = IERC20(uni).balanceOf(address(this));
        if (_uni > 0) {
            // 10% is locked up for future gov
            uint256 _keepUNI = _uni.mul(keepUNI).div(keepUNIMax);
            IERC20(uni).safeTransfer(
                IController(controller).treasury(),
                _keepUNI
            );
            _swapUniswap(uni, weth, _uni.sub(_keepUNI));
        }

        // Swap half WETH for DAI
        uint256 _weth = IERC20(weth).balanceOf(address(this));
        if (_weth > 0) {
            _swapUniswap(weth, token1, _weth.div(2));
        }

        // Adds in liquidity for ETH/DAI
        _weth = IERC20(weth).balanceOf(address(this));
        uint256 _token1 = IERC20(token1).balanceOf(address(this));
        if (_weth > 0 && _token1 > 0) {
            IERC20(weth).safeApprove(univ2Router2, 0);
            IERC20(weth).safeApprove(univ2Router2, _weth);

            IERC20(token1).safeApprove(univ2Router2, 0);
            IERC20(token1).safeApprove(univ2Router2, _token1);

            UniswapRouterV2(univ2Router2).addLiquidity(
                weth,
                token1,
                _weth,
                _token1,
                0,
                0,
                address(this),
                now + 60
            );

            // Donates DUST
            IERC20(weth).transfer(
                IController(controller).treasury(),
                IERC20(weth).balanceOf(address(this))
            );
            IERC20(token1).safeTransfer(
                IController(controller).treasury(),
                IERC20(token1).balanceOf(address(this))
            );
        }

        // We want to get back UNI LP tokens
        _distributePerformanceFeesAndDeposit();
    }
}

pragma solidity ^0.6.7;

import "./strategy-base.sol";

// Base contract for SNX Staking rewards contract interfaces

abstract contract StrategyStakingRewardsBase is StrategyBase {
    address public rewards;

    // **** Getters ****
    constructor(
        address _rewards,
        address _want,
        address _governance,
        address _strategist,
        address _controller,
        address _timelock
    )
        public
        StrategyBase(_want, _governance, _strategist, _controller, _timelock)
    {
        rewards = _rewards;
    }

    function balanceOfPool() public override view returns (uint256) {
        return IStakingRewards(rewards).balanceOf(address(this));
    }

    function getHarvestable() external view returns (uint256) {
        return IStakingRewards(rewards).earned(address(this));
    }

    // **** Setters ****

    function deposit() public override {
        uint256 _want = IERC20(want).balanceOf(address(this));
        if (_want > 0) {
            IERC20(want).safeApprove(rewards, 0);
            IERC20(want).safeApprove(rewards, _want);
            IStakingRewards(rewards).stake(_want);
        }
    }

    function _withdrawSome(uint256 _amount)
        internal
        override
        returns (uint256)
    {
        IStakingRewards(rewards).withdraw(_amount);
        return _amount;
    }
}

pragma solidity 0.6.7;

import "../lib/enumerableSet.sol";
import "../lib/safe-math.sol";
import "../lib/erc20.sol";
import "../lib/ownable.sol";
import "./pickle-token.sol";

// MasterChef was the master of pickle. He now governs over PICKLES. He can make Pickles and he is a fair guy.
//
// Note that it's ownable and the owner wields tremendous power. The ownership
// will be transferred to a governance smart contract once PICKLES is sufficiently
// distributed and the community can show to govern itself.
//
// Have fun reading it. Hopefully it's bug-free. God bless.
contract MasterChef is Ownable {
    using SafeMath for uint256;
    using SafeERC20 for IERC20;

    // Info of each user.
    struct UserInfo {
        uint256 amount; // How many LP tokens the user has provided.
        uint256 rewardDebt; // Reward debt. See explanation below.
        //
        // We do some fancy math here. Basically, any point in time, the amount of PICKLEs
        // entitled to a user but is pending to be distributed is:
        //
        //   pending reward = (user.amount * pool.accPicklePerShare) - user.rewardDebt
        //
        // Whenever a user deposits or withdraws LP tokens to a pool. Here's what happens:
        //   1. The pool's `accPicklePerShare` (and `lastRewardBlock`) gets updated.
        //   2. User receives the pending reward sent to his/her address.
        //   3. User's `amount` gets updated.
        //   4. User's `rewardDebt` gets updated.
    }

    // Info of each pool.
    struct PoolInfo {
        IERC20 lpToken; // Address of LP token contract.
        uint256 allocPoint; // How many allocation points assigned to this pool. PICKLEs to distribute per block.
        uint256 lastRewardBlock; // Last block number that PICKLEs distribution occurs.
        uint256 accPicklePerShare; // Accumulated PICKLEs per share, times 1e12. See below.
    }

    // The PICKLE TOKEN!
    PickleToken public pickle;
    // Dev fund (2%, initially)
    uint256 public devFundDivRate = 50;
    // Dev address.
    address public devaddr;
    // Block number when bonus PICKLE period ends.
    uint256 public bonusEndBlock;
    // PICKLE tokens created per block.
    uint256 public picklePerBlock;
    // Bonus muliplier for early pickle makers.
    uint256 public constant BONUS_MULTIPLIER = 10;

    // Info of each pool.
    PoolInfo[] public poolInfo;
    // Info of each user that stakes LP tokens.
    mapping(uint256 => mapping(address => UserInfo)) public userInfo;
    // Total allocation points. Must be the sum of all allocation points in all pools.
    uint256 public totalAllocPoint = 0;
    // The block number when PICKLE mining starts.
    uint256 public startBlock;

    // Events
    event Recovered(address token, uint256 amount);
    event Deposit(address indexed user, uint256 indexed pid, uint256 amount);
    event Withdraw(address indexed user, uint256 indexed pid, uint256 amount);
    event EmergencyWithdraw(
        address indexed user,
        uint256 indexed pid,
        uint256 amount
    );

    constructor(
        PickleToken _pickle,
        address _devaddr,
        uint256 _picklePerBlock,
        uint256 _startBlock,
        uint256 _bonusEndBlock
    ) public {
        pickle = _pickle;
        devaddr = _devaddr;
        picklePerBlock = _picklePerBlock;
        bonusEndBlock = _bonusEndBlock;
        startBlock = _startBlock;
    }

    function poolLength() external view returns (uint256) {
        return poolInfo.length;
    }

    // Add a new lp to the pool. Can only be called by the owner.
    // XXX DO NOT add the same LP token more than once. Rewards will be messed up if you do.
    function add(
        uint256 _allocPoint,
        IERC20 _lpToken,
        bool _withUpdate
    ) public onlyOwner {
        if (_withUpdate) {
            massUpdatePools();
        }
        uint256 lastRewardBlock = block.number > startBlock
            ? block.number
            : startBlock;
        totalAllocPoint = totalAllocPoint.add(_allocPoint);
        poolInfo.push(
            PoolInfo({
                lpToken: _lpToken,
                allocPoint: _allocPoint,
                lastRewardBlock: lastRewardBlock,
                accPicklePerShare: 0
            })
        );
    }

    // Update the given pool's PICKLE allocation point. Can only be called by the owner.
    function set(
        uint256 _pid,
        uint256 _allocPoint,
        bool _withUpdate
    ) public onlyOwner {
        if (_withUpdate) {
            massUpdatePools();
        }
        totalAllocPoint = totalAllocPoint.sub(poolInfo[_pid].allocPoint).add(
            _allocPoint
        );
        poolInfo[_pid].allocPoint = _allocPoint;
    }

    // Return reward multiplier over the given _from to _to block.
    function getMultiplier(uint256 _from, uint256 _to)
        public
        view
        returns (uint256)
    {
        if (_to <= bonusEndBlock) {
            return _to.sub(_from).mul(BONUS_MULTIPLIER);
        } else if (_from >= bonusEndBlock) {
            return _to.sub(_from);
        } else {
            return
                bonusEndBlock.sub(_from).mul(BONUS_MULTIPLIER).add(
                    _to.sub(bonusEndBlock)
                );
        }
    }

    // View function to see pending PICKLEs on frontend.
    function pendingPickle(uint256 _pid, address _user)
        external
        view
        returns (uint256)
    {
        PoolInfo storage pool = poolInfo[_pid];
        UserInfo storage user = userInfo[_pid][_user];
        uint256 accPicklePerShare = pool.accPicklePerShare;
        uint256 lpSupply = pool.lpToken.balanceOf(address(this));
        if (block.number > pool.lastRewardBlock && lpSupply != 0) {
            uint256 multiplier = getMultiplier(
                pool.lastRewardBlock,
                block.number
            );
            uint256 pickleReward = multiplier
                .mul(picklePerBlock)
                .mul(pool.allocPoint)
                .div(totalAllocPoint);
            accPicklePerShare = accPicklePerShare.add(
                pickleReward.mul(1e12).div(lpSupply)
            );
        }
        return
            user.amount.mul(accPicklePerShare).div(1e12).sub(user.rewardDebt);
    }

    // Update reward vairables for all pools. Be careful of gas spending!
    function massUpdatePools() public {
        uint256 length = poolInfo.length;
        for (uint256 pid = 0; pid < length; ++pid) {
            updatePool(pid);
        }
    }

    // Update reward variables of the given pool to be up-to-date.
    function updatePool(uint256 _pid) public {
        PoolInfo storage pool = poolInfo[_pid];
        if (block.number <= pool.lastRewardBlock) {
            return;
        }
        uint256 lpSupply = pool.lpToken.balanceOf(address(this));
        if (lpSupply == 0) {
            pool.lastRewardBlock = block.number;
            return;
        }
        uint256 multiplier = getMultiplier(pool.lastRewardBlock, block.number);
        uint256 pickleReward = multiplier
            .mul(picklePerBlock)
            .mul(pool.allocPoint)
            .div(totalAllocPoint);
        pickle.mint(devaddr, pickleReward.div(devFundDivRate));
        pickle.mint(address(this), pickleReward);
        pool.accPicklePerShare = pool.accPicklePerShare.add(
            pickleReward.mul(1e12).div(lpSupply)
        );
        pool.lastRewardBlock = block.number;
    }

    // Deposit LP tokens to MasterChef for PICKLE allocation.
    function deposit(uint256 _pid, uint256 _amount) public {
        PoolInfo storage pool = poolInfo[_pid];
        UserInfo storage user = userInfo[_pid][msg.sender];
        updatePool(_pid);
        if (user.amount > 0) {
            uint256 pending = user
                .amount
                .mul(pool.accPicklePerShare)
                .div(1e12)
                .sub(user.rewardDebt);
            safePickleTransfer(msg.sender, pending);
        }
        pool.lpToken.safeTransferFrom(
            address(msg.sender),
            address(this),
            _amount
        );
        user.amount = user.amount.add(_amount);
        user.rewardDebt = user.amount.mul(pool.accPicklePerShare).div(1e12);
        emit Deposit(msg.sender, _pid, _amount);
    }

    // Withdraw LP tokens from MasterChef.
    function withdraw(uint256 _pid, uint256 _amount) public {
        PoolInfo storage pool = poolInfo[_pid];
        UserInfo storage user = userInfo[_pid][msg.sender];
        require(user.amount >= _amount, "withdraw: not good");
        updatePool(_pid);
        uint256 pending = user.amount.mul(pool.accPicklePerShare).div(1e12).sub(
            user.rewardDebt
        );
        safePickleTransfer(msg.sender, pending);
        user.amount = user.amount.sub(_amount);
        user.rewardDebt = user.amount.mul(pool.accPicklePerShare).div(1e12);
        pool.lpToken.safeTransfer(address(msg.sender), _amount);
        emit Withdraw(msg.sender, _pid, _amount);
    }

    // Withdraw without caring about rewards. EMERGENCY ONLY.
    function emergencyWithdraw(uint256 _pid) public {
        PoolInfo storage pool = poolInfo[_pid];
        UserInfo storage user = userInfo[_pid][msg.sender];
        pool.lpToken.safeTransfer(address(msg.sender), user.amount);
        emit EmergencyWithdraw(msg.sender, _pid, user.amount);
        user.amount = 0;
        user.rewardDebt = 0;
    }

    // Safe pickle transfer function, just in case if rounding error causes pool to not have enough PICKLEs.
    function safePickleTransfer(address _to, uint256 _amount) internal {
        uint256 pickleBal = pickle.balanceOf(address(this));
        if (_amount > pickleBal) {
            pickle.transfer(_to, pickleBal);
        } else {
            pickle.transfer(_to, _amount);
        }
    }

    // Update dev address by the previous dev.
    function dev(address _devaddr) public {
        require(msg.sender == devaddr, "dev: wut?");
        devaddr = _devaddr;
    }

    // **** Additional functions separate from the original masterchef contract ****

    function setPicklePerBlock(uint256 _picklePerBlock) public onlyOwner {
        require(_picklePerBlock > 0, "!picklePerBlock-0");

        picklePerBlock = _picklePerBlock;
    }

    function setBonusEndBlock(uint256 _bonusEndBlock) public onlyOwner {
        bonusEndBlock = _bonusEndBlock;
    }

    function setDevFundDivRate(uint256 _devFundDivRate) public onlyOwner {
        require(_devFundDivRate > 0, "!devFundDivRate-0");
        devFundDivRate = _devFundDivRate;
    }
}

pragma solidity 0.6.7;

import "../lib/erc20.sol";
import "../lib/ownable.sol";

// PickleToken with Governance.
contract PickleToken is ERC20("PickleToken", "PICKLE"), Ownable {
    /// @notice Creates `_amount` token to `_to`. Must only be called by the owner (MasterChef).
    function mint(address _to, uint256 _amount) public onlyOwner {
        _mint(_to, _amount);
    }
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.6.7;

import "./lib/reentrancy-guard.sol";
import "./lib/pausable.sol";
import "./lib/erc20.sol";
import "./lib/safe-math.sol";

contract StakingRewards is ReentrancyGuard, Pausable {
    using SafeMath for uint256;
    using SafeERC20 for IERC20;

    /* ========== STATE VARIABLES ========== */

    IERC20 public rewardsToken;
    IERC20 public stakingToken;
    uint256 public periodFinish = 0;
    uint256 public rewardRate = 0;
    uint256 public rewardsDuration = 7 days;
    uint256 public lastUpdateTime;
    uint256 public rewardPerTokenStored;

    mapping(address => uint256) public userRewardPerTokenPaid;
    mapping(address => uint256) public rewards;

    uint256 private _totalSupply;
    mapping(address => uint256) private _balances;

    /* ========== CONSTRUCTOR ========== */

    constructor(
        address _owner,
        address _rewardsToken,
        address _stakingToken
    ) public Owned(_owner) {
        rewardsToken = IERC20(_rewardsToken);
        stakingToken = IERC20(_stakingToken);
    }

    /* ========== VIEWS ========== */

    function totalSupply() external view returns (uint256) {
        return _totalSupply;
    }

    function balanceOf(address account) external view returns (uint256) {
        return _balances[account];
    }

    function lastTimeRewardApplicable() public view returns (uint256) {
        return min(block.timestamp, periodFinish);
    }

    function rewardPerToken() public view returns (uint256) {
        if (_totalSupply == 0) {
            return rewardPerTokenStored;
        }
        return
            rewardPerTokenStored.add(
                lastTimeRewardApplicable()
                    .sub(lastUpdateTime)
                    .mul(rewardRate)
                    .mul(1e18)
                    .div(_totalSupply)
            );
    }

    function earned(address account) public view returns (uint256) {
        return
            _balances[account]
                .mul(rewardPerToken().sub(userRewardPerTokenPaid[account]))
                .div(1e18)
                .add(rewards[account]);
    }

    function getRewardForDuration() external view returns (uint256) {
        return rewardRate.mul(rewardsDuration);
    }

    function min(uint256 a, uint256 b) public pure returns (uint256) {
        return a < b ? a : b;
    }

    /* ========== MUTATIVE FUNCTIONS ========== */

    function stake(uint256 amount)
        external
        nonReentrant
        notPaused
        updateReward(msg.sender)
    {
        require(amount > 0, "Cannot stake 0");
        _totalSupply = _totalSupply.add(amount);
        _balances[msg.sender] = _balances[msg.sender].add(amount);
        stakingToken.safeTransferFrom(msg.sender, address(this), amount);
        emit Staked(msg.sender, amount);
    }

    function withdraw(uint256 amount)
        public
        nonReentrant
        updateReward(msg.sender)
    {
        require(amount > 0, "Cannot withdraw 0");
        _totalSupply = _totalSupply.sub(amount);
        _balances[msg.sender] = _balances[msg.sender].sub(amount);
        stakingToken.safeTransfer(msg.sender, amount);
        emit Withdrawn(msg.sender, amount);
    }

    function getReward() public nonReentrant updateReward(msg.sender) {
        uint256 reward = rewards[msg.sender];
        if (reward > 0) {
            rewards[msg.sender] = 0;
            rewardsToken.safeTransfer(msg.sender, reward);
            emit RewardPaid(msg.sender, reward);
        }
    }

    function exit() external {
        withdraw(_balances[msg.sender]);
        getReward();
    }

    /* ========== RESTRICTED FUNCTIONS ========== */

    function notifyRewardAmount(uint256 reward)
        external
        onlyOwner
        updateReward(address(0))
    {
        if (block.timestamp >= periodFinish) {
            rewardRate = reward.div(rewardsDuration);
        } else {
            uint256 remaining = periodFinish.sub(block.timestamp);
            uint256 leftover = remaining.mul(rewardRate);
            rewardRate = reward.add(leftover).div(rewardsDuration);
        }

        // Ensure the provided reward amount is not more than the balance in the contract.
        // This keeps the reward rate in the right range, preventing overflows due to
        // very high values of rewardRate in the earned and rewardsPerToken functions;
        // Reward + leftover must be less than 2^256 / 10^18 to avoid overflow.
        uint256 balance = rewardsToken.balanceOf(address(this));
        require(
            rewardRate <= balance.div(rewardsDuration),
            "Provided reward too high"
        );

        lastUpdateTime = block.timestamp;
        periodFinish = block.timestamp.add(rewardsDuration);
        emit RewardAdded(reward);
    }

    // Added to support recovering LP Rewards from other systems such as BAL to be distributed to holders
    function recoverERC20(address tokenAddress, uint256 tokenAmount)
        external
        onlyOwner
    {
        // Cannot recover the staking token or the rewards token
        require(
            tokenAddress != address(stakingToken) &&
                tokenAddress != address(rewardsToken),
            "Cannot withdraw the staking or rewards tokens"
        );
        IERC20(tokenAddress).safeTransfer(owner, tokenAmount);
        emit Recovered(tokenAddress, tokenAmount);
    }

    function setRewardsDuration(uint256 _rewardsDuration) external onlyOwner {
        require(
            block.timestamp > periodFinish,
            "Previous rewards period must be complete before changing the duration for the new period"
        );
        rewardsDuration = _rewardsDuration;
        emit RewardsDurationUpdated(rewardsDuration);
    }

    /* ========== MODIFIERS ========== */

    modifier updateReward(address account) {
        rewardPerTokenStored = rewardPerToken();
        lastUpdateTime = lastTimeRewardApplicable();
        if (account != address(0)) {
            rewards[account] = earned(account);
            userRewardPerTokenPaid[account] = rewardPerTokenStored;
        }
        _;
    }

    /* ========== EVENTS ========== */

    event RewardAdded(uint256 reward);
    event Staked(address indexed user, uint256 amount);
    event Withdrawn(address indexed user, uint256 amount);
    event RewardPaid(address indexed user, uint256 reward);
    event RewardsDurationUpdated(uint256 newDuration);
    event Recovered(address token, uint256 amount);
}

// https://github.com/iearn-finance/vaults/blob/master/contracts/vaults/yVault.sol

pragma solidity ^0.6.7;

import "./interfaces/controller.sol";

import "./lib/erc20.sol";
import "./lib/safe-math.sol";

contract PickleJar is ERC20 {
    using SafeERC20 for IERC20;
    using Address for address;
    using SafeMath for uint256;

    IERC20 public token;

    uint256 public min = 9500;
    uint256 public constant max = 10000;

    address public governance;
    address public timelock;
    address public controller;

    constructor(address _token, address _governance, address _timelock, address _controller)
        public
        ERC20(
            string(abi.encodePacked("pickling ", ERC20(_token).name())),
            string(abi.encodePacked("p", ERC20(_token).symbol()))
        )
    {
        _setupDecimals(ERC20(_token).decimals());
        token = IERC20(_token);
        governance = _governance;
        timelock = _timelock;
        controller = _controller;
    }

    function balance() public view returns (uint256) {
        return
            token.balanceOf(address(this)).add(
                IController(controller).balanceOf(address(token))
            );
    }

    function setMin(uint256 _min) external {
        require(msg.sender == governance, "!governance");
        min = _min;
    }

    function setGovernance(address _governance) public {
        require(msg.sender == governance, "!governance");
        governance = _governance;
    }

    function setTimelock(address _timelock) public {
        require(msg.sender == timelock, "!timelock");
        timelock = _timelock;
    }

    function setController(address _controller) public {
        require(msg.sender == timelock, "!timelock");
        controller = _controller;
    }

    // Custom logic in here for how much the jars allows to be borrowed
    // Sets minimum required on-hand to keep small withdrawals cheap
    function available() public view returns (uint256) {
        return token.balanceOf(address(this)).mul(min).div(max);
    }

    function earn() public {
        uint256 _bal = available();
        token.safeTransfer(controller, _bal);
        IController(controller).earn(address(token), _bal);
    }

    function depositAll() external {
        deposit(token.balanceOf(msg.sender));
    }

    function deposit(uint256 _amount) public {
        uint256 _pool = balance();
        uint256 _before = token.balanceOf(address(this));
        token.safeTransferFrom(msg.sender, address(this), _amount);
        uint256 _after = token.balanceOf(address(this));
        _amount = _after.sub(_before); // Additional check for deflationary tokens
        uint256 shares = 0;
        if (totalSupply() == 0) {
            shares = _amount;
        } else {
            shares = (_amount.mul(totalSupply())).div(_pool);
        }
        _mint(msg.sender, shares);
    }

    function withdrawAll() external {
        withdraw(balanceOf(msg.sender));
    }

    // Used to swap any borrowed reserve over the debt limit to liquidate to 'token'
    function harvest(address reserve, uint256 amount) external {
        require(msg.sender == controller, "!controller");
        require(reserve != address(token), "token");
        IERC20(reserve).safeTransfer(controller, amount);
    }

    // No rebalance implementation for lower fees and faster swaps
    function withdraw(uint256 _shares) public {
        uint256 r = (balance().mul(_shares)).div(totalSupply());
        _burn(msg.sender, _shares);

        // Check balance
        uint256 b = token.balanceOf(address(this));
        if (b < r) {
            uint256 _withdraw = r.sub(b);
            IController(controller).withdraw(address(token), _withdraw);
            uint256 _after = token.balanceOf(address(this));
            uint256 _diff = _after.sub(b);
            if (_diff < _withdraw) {
                r = b.add(_diff);
            }
        }

        token.safeTransfer(msg.sender, r);
    }

    function getRatio() public view returns (uint256) {
        return balance().mul(1e18).div(totalSupply());
    }
}

// SPDX-License-Identifier: MIT

pragma solidity 0.6.7;

import "../lib/safe-math.sol";

contract Timelock {
    using SafeMath for uint;

    event NewAdmin(address indexed newAdmin);
    event NewPendingAdmin(address indexed newPendingAdmin);
    event NewDelay(uint indexed newDelay);
    event CancelTransaction(bytes32 indexed txHash, address indexed target, uint value, string signature,  bytes data, uint eta);
    event ExecuteTransaction(bytes32 indexed txHash, address indexed target, uint value, string signature,  bytes data, uint eta);
    event QueueTransaction(bytes32 indexed txHash, address indexed target, uint value, string signature, bytes data, uint eta);

    uint public constant GRACE_PERIOD = 14 days;
    uint public constant MINIMUM_DELAY = 2 days;
    uint public constant MAXIMUM_DELAY = 30 days;

    address public admin;
    address public pendingAdmin;
    uint public delay;
    bool public admin_initialized;

    mapping (bytes32 => bool) public queuedTransactions;


    constructor(address admin_, uint delay_) public {
        require(delay_ >= MINIMUM_DELAY, "Timelock::constructor: Delay must exceed minimum delay.");
        require(delay_ <= MAXIMUM_DELAY, "Timelock::constructor: Delay must not exceed maximum delay.");

        admin = admin_;
        delay = delay_;
        admin_initialized = false;
    }

    // XXX: function() external payable { }
    receive() external payable { }

    function setDelay(uint delay_) public {
        require(msg.sender == address(this), "Timelock::setDelay: Call must come from Timelock.");
        require(delay_ >= MINIMUM_DELAY, "Timelock::setDelay: Delay must exceed minimum delay.");
        require(delay_ <= MAXIMUM_DELAY, "Timelock::setDelay: Delay must not exceed maximum delay.");
        delay = delay_;

        emit NewDelay(delay);
    }

    function acceptAdmin() public {
        require(msg.sender == pendingAdmin, "Timelock::acceptAdmin: Call must come from pendingAdmin.");
        admin = msg.sender;
        pendingAdmin = address(0);

        emit NewAdmin(admin);
    }

    function setPendingAdmin(address pendingAdmin_) public {
        // allows one time setting of admin for deployment purposes
        if (admin_initialized) {
            require(msg.sender == address(this), "Timelock::setPendingAdmin: Call must come from Timelock.");
        } else {
            require(msg.sender == admin, "Timelock::setPendingAdmin: First call must come from admin.");
            admin_initialized = true;
        }
        pendingAdmin = pendingAdmin_;

        emit NewPendingAdmin(pendingAdmin);
    }

    function queueTransaction(address target, uint value, string memory signature, bytes memory data, uint eta) public returns (bytes32) {
        require(msg.sender == admin, "Timelock::queueTransaction: Call must come from admin.");
        require(eta >= getBlockTimestamp().add(delay), "Timelock::queueTransaction: Estimated execution block must satisfy delay.");

        bytes32 txHash = keccak256(abi.encode(target, value, signature, data, eta));
        queuedTransactions[txHash] = true;

        emit QueueTransaction(txHash, target, value, signature, data, eta);
        return txHash;
    }

    function cancelTransaction(address target, uint value, string memory signature, bytes memory data, uint eta) public {
        require(msg.sender == admin, "Timelock::cancelTransaction: Call must come from admin.");

        bytes32 txHash = keccak256(abi.encode(target, value, signature, data, eta));
        queuedTransactions[txHash] = false;

        emit CancelTransaction(txHash, target, value, signature, data, eta);
    }

    function executeTransaction(address target, uint value, string memory signature, bytes memory data, uint eta) public payable returns (bytes memory) {
        require(msg.sender == admin, "Timelock::executeTransaction: Call must come from admin.");

        bytes32 txHash = keccak256(abi.encode(target, value, signature, data, eta));
        require(queuedTransactions[txHash], "Timelock::executeTransaction: Transaction hasn't been queued.");
        require(getBlockTimestamp() >= eta, "Timelock::executeTransaction: Transaction hasn't surpassed time lock.");
        require(getBlockTimestamp() <= eta.add(GRACE_PERIOD), "Timelock::executeTransaction: Transaction is stale.");

        queuedTransactions[txHash] = false;

        bytes memory callData;

        if (bytes(signature).length == 0) {
            callData = data;
        } else {
            callData = abi.encodePacked(bytes4(keccak256(bytes(signature))), data);
        }

        // solium-disable-next-line security/no-call-value
        (bool success, bytes memory returnData) = target.call.value(value)(callData);
        require(success, "Timelock::executeTransaction: Transaction execution reverted.");

        emit ExecuteTransaction(txHash, target, value, signature, data, eta);

        return returnData;
    }

    function getBlockTimestamp() internal view returns (uint) {
        // solium-disable-next-line security/no-block-members
        return block.timestamp;
    }
}

{
  "metadata": {
    "useLiteralContent": true
  },
  "optimizer": {
    "enabled": true,
    "runs": 200
  },
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "abi"
      ]
    }
  }
}

• No Contract Security Audit Submitted- Submit Audit Here

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ddress"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"uni_rewards","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"univ2Router2","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"usdt","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"want","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"weth","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"_amount","type":"uint256"}],"name":"withdraw","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"contract 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-----Decoded View---------------
Arg [0] : _governance (address): 0x9d074E37d408542FD38be78848e8814AFB38db17
Arg [1] : _strategist (address): 0x907D9B32654B8D43e8737E0291Ad9bfcce01DAD6
Arg [2] : _controller (address): 0x6847259b2B3A4c17e7c43C54409810aF48bA5210
Arg [3] : _timelock (address): 0xD92c7fAa0Ca0e6AE4918f3a83d9832d9CAEAA0d3

-----Encoded View---------------
4 Constructor Arguments found :
Arg [0] : 0000000000000000000000009d074e37d408542fd38be78848e8814afb38db17
Arg [1] : 000000000000000000000000907d9b32654b8d43e8737e0291ad9bfcce01dad6
Arg [2] : 0000000000000000000000006847259b2b3a4c17e7c43c54409810af48ba5210
Arg [3] : 000000000000000000000000d92c7faa0ca0e6ae4918f3a83d9832d9caeaa0d3