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/**
 * Copyright 2017-2022, OokiDao. All Rights Reserved.
 * Licensed under the Apache License, Version 2.0.
 */

pragma solidity 0.5.17;
pragma experimental ABIEncoderV2;

import "StakingStateV2.sol";


contract StakingModularProxy is StakingStateV2 {

    function()
        external
        payable
    {
        if (gasleft() <= 2300) {
            return;
        }

        address target = logicTargets[msg.sig];
        require(target != address(0), "target not active");

        bytes memory data = msg.data;
        assembly {
            let result := delegatecall(gas, target, add(data, 0x20), mload(data), 0, 0)
            let size := returndatasize
            let ptr := mload(0x40)
            returndatacopy(ptr, 0, size)
            switch result
            case 0 { revert(ptr, size) }
            default { return(ptr, size) }
        }
    }

    function replaceContract(
        address target)
        external
        onlyOwner
    {
        (bool success,) = target.delegatecall(abi.encodeWithSignature("initialize(address)", target));
        require(success, "setup failed");
    }

    function setTargets(
        string[] calldata sigsArr,
        address[] calldata targetsArr)
        external
        onlyOwner
    {
        require(sigsArr.length == targetsArr.length, "count mismatch");

        for (uint256 i = 0; i < sigsArr.length; i++) {
            _setTarget(bytes4(keccak256(abi.encodePacked(sigsArr[i]))), targetsArr[i]);
        }
    }

    function getTarget(
        string calldata sig)
        external
        view
        returns (address)
    {
        return logicTargets[bytes4(keccak256(abi.encodePacked(sig)))];
    }
}

/**
 * Copyright 2017-2022, OokiDao. All Rights Reserved.
 * Licensed under the Apache License, Version 2.0.
 */

pragma solidity 0.5.17;

import "SafeMath.sol";
import "SafeERC20.sol";
import "EnumerableBytes32Set.sol";
import "IStakingV2.sol";
import "Ownable.sol";
import "StakingConstantsV2.sol";

contract StakingStateV2 is StakingConstantsV2, Ownable {
    using SafeMath for uint256;
    using SafeERC20 for IERC20;
    using EnumerableBytes32Set for EnumerableBytes32Set.Bytes32Set;

    mapping(bytes4 => address) public logicTargets;
    EnumerableBytes32Set.Bytes32Set internal logicTargetsSet;

    mapping(address => uint256) public _totalSupplyPerToken; // token => value
    mapping(address => mapping(address => uint256)) internal _balancesPerToken; // token => account => value

    uint256 public ookiPerTokenStored;
    mapping(address => uint256) public ookiRewardsPerTokenPaid; // user => value
    mapping(address => uint256) public ookiRewards; // user => value
    mapping(address => uint256) public bzrxVesting; // user => value

    uint256 public stableCoinPerTokenStored;
    mapping(address => uint256) public stableCoinRewardsPerTokenPaid; // user => value
    mapping(address => uint256) public stableCoinRewards; // user => value
    mapping(address => uint256) public stableCoinVesting; // user => value

    uint256 public vBZRXWeightStored;
    uint256 public iOOKIWeightStored;
    uint256 public LPTokenWeightStored;

    uint256 public lastRewardsAddTime;
    mapping(address => uint256) public vestingLastSync;

    struct ProposalState {
        uint256 proposalTime;
        uint256 iOOKIWeight;
        uint256 lpOOKIBalance;
        uint256 lpTotalSupply;
    }
    address public governor;
    mapping(uint256 => ProposalState) internal _proposalState;

    mapping(address => uint256[]) public altRewardsRounds; // depreciated
    mapping(address => uint256) public altRewardsPerShare; // token => value

    // Token => (User => Info)
    mapping(address => mapping(address => IStakingV2.AltRewardsUserInfo)) public userAltRewardsPerShare;

    address public voteDelegator;

    function _setTarget(bytes4 sig, address target) internal {
        logicTargets[sig] = target;

        if (target != address(0)) {
            logicTargetsSet.addBytes32(bytes32(sig));
        } else {
            logicTargetsSet.removeBytes32(bytes32(sig));
        }
    }
}

pragma solidity ^0.5.0;

/**
 * @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.
     *
     * _Available since v2.4.0._
     */
    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.
     *
     * _Available since v2.4.0._
     */
    function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
        // Solidity only automatically asserts when dividing by 0
        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.
     *
     * _Available since v2.4.0._
     */
    function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
        require(b != 0, errorMessage);
        return a % b;
    }
}

pragma solidity ^0.5.0;

import "IERC20.sol";
import "SafeMath.sol";
import "Address.sol";

/**
 * @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 ERC20;` 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));
    }

    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.

        // A Solidity high level call has three parts:
        //  1. The target address is checked to verify it contains contract code
        //  2. The call itself is made, and success asserted
        //  3. The return value is decoded, which in turn checks the size of the returned data.
        // solhint-disable-next-line max-line-length
        require(address(token).isContract(), "SafeERC20: call to non-contract");

        // solhint-disable-next-line avoid-low-level-calls
        (bool success, bytes memory returndata) = address(token).call(data);
        require(success, "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 ^0.5.0;

/**
 * @dev Interface of the ERC20 standard as defined in the EIP. Does not include
 * the optional functions; to access them see {ERC20Detailed}.
 */
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);
}

pragma solidity ^0.5.5;

/**
 * @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) {
        // According to EIP-1052, 0x0 is the value returned for not-yet created accounts
        // and 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470 is returned
        // for accounts without code, i.e. `keccak256('')`
        bytes32 codehash;
        bytes32 accountHash = 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470;
        // solhint-disable-next-line no-inline-assembly
        assembly { codehash := extcodehash(account) }
        return (codehash != accountHash && codehash != 0x0);
    }

    /**
     * @dev Converts an `address` into `address payable`. Note that this is
     * simply a type cast: the actual underlying value is not changed.
     *
     * _Available since v2.4.0._
     */
    function toPayable(address account) internal pure returns (address payable) {
        return address(uint160(account));
    }

    /**
     * @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].
     *
     * _Available since v2.4.0._
     */
    function sendValue(address payable recipient, uint256 amount) internal {
        require(address(this).balance >= amount, "Address: insufficient balance");

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

/**
 * Copyright 2017-2022, OokiDao. All Rights Reserved.
 * Licensed under the Apache License, Version 2.0.
 */

pragma solidity 0.5.17;

/**
 * @dev Library for managing loan sets
 *
 * 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.
 *
 * Include with `using EnumerableBytes32Set for EnumerableBytes32Set.Bytes32Set;`.
 *
 */
library EnumerableBytes32Set {

    struct Bytes32Set {
        // Position of the value in the `values` array, plus 1 because index 0
        // means a value is not in the set.
        mapping (bytes32 => uint256) index;
        bytes32[] values;
    }

    /**
     * @dev Add an address value to a set. O(1).
     * Returns false if the value was already in the set.
     */
    function addAddress(Bytes32Set storage set, address addrvalue)
        internal
        returns (bool)
    {
        bytes32 value;
        assembly {
            value := addrvalue
        }
        return addBytes32(set, value);
    }

    /**
     * @dev Add a value to a set. O(1).
     * Returns false if the value was already in the set.
     */
    function addBytes32(Bytes32Set storage set, bytes32 value)
        internal
        returns (bool)
    {
        if (!contains(set, value)){
            set.index[value] = set.values.push(value);
            return true;
        } else {
            return false;
        }
    }

    /**
     * @dev Removes an address value from a set. O(1).
     * Returns false if the value was not present in the set.
     */
    function removeAddress(Bytes32Set storage set, address addrvalue)
        internal
        returns (bool)
    {
        bytes32 value;
        assembly {
            value := addrvalue
        }
        return removeBytes32(set, value);
    }

    /**
     * @dev Removes a value from a set. O(1).
     * Returns false if the value was not present in the set.
     */
    function removeBytes32(Bytes32Set storage set, bytes32 value)
        internal
        returns (bool)
    {
        if (contains(set, value)){
            uint256 toDeleteIndex = set.index[value] - 1;
            uint256 lastIndex = set.values.length - 1;

            // If the element we're deleting is the last one, we can just remove it without doing a swap
            if (lastIndex != toDeleteIndex) {
                bytes32 lastValue = set.values[lastIndex];

                // Move the last value to the index where the deleted value is
                set.values[toDeleteIndex] = lastValue;
                // Update the index for the moved value
                set.index[lastValue] = toDeleteIndex + 1; // All indexes are 1-based
            }

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

            // Delete the old entry for the moved value
            set.values.pop();

            return true;
        } else {
            return false;
        }
    }

    /**
     * @dev Returns true if the value is in the set. O(1).
     */
    function contains(Bytes32Set storage set, bytes32 value)
        internal
        view
        returns (bool)
    {
        return set.index[value] != 0;
    }

    /**
     * @dev Returns true if the value is in the set. O(1).
     */
    function containsAddress(Bytes32Set storage set, address addrvalue)
        internal
        view
        returns (bool)
    {
        bytes32 value;
        assembly {
            value := addrvalue
        }
        return set.index[value] != 0;
    }

    /**
     * @dev Returns an array with all values in the set. O(N).
     * 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.

     * WARNING: This function may run out of gas on large sets: use {length} and
     * {get} instead in these cases.
     */
    function enumerate(Bytes32Set storage set, uint256 start, uint256 count)
        internal
        view
        returns (bytes32[] memory output)
    {
        uint256 end = start + count;
        require(end >= start, "addition overflow");
        end = set.values.length < end ? set.values.length : end;
        if (end == 0 || start >= end) {
            return output;
        }

        output = new bytes32[](end-start);
        for (uint256 i = start; i < end; i++) {
            output[i-start] = set.values[i];
        }
        return output;
    }

    /**
     * @dev Returns the number of elements on the set. O(1).
     */
    function length(Bytes32Set storage set)
        internal
        view
        returns (uint256)
    {
        return set.values.length;
    }

   /** @dev Returns the element 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 get(Bytes32Set storage set, uint256 index)
        internal
        view
        returns (bytes32)
    {
        return set.values[index];
    }

   /** @dev Returns the element 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 getAddress(Bytes32Set storage set, uint256 index)
        internal
        view
        returns (address)
    {
        bytes32 value = set.values[index];
        address addrvalue;
        assembly {
            addrvalue := value
        }
        return addrvalue;
    }
}

/**
 * Copyright 2017-2022, OokiDao. All Rights Reserved.
 * Licensed under the Apache License, Version 2.0.
 */

pragma solidity >=0.5.0 <=0.8.4;
pragma experimental ABIEncoderV2;

interface IStakingV2 {
    struct ProposalState {
        uint256 proposalTime;
        uint256 iOOKIWeight;
        uint256 lpOOKIBalance;
        uint256 lpTotalSupply;
    }

    struct AltRewardsUserInfo {
        uint256 rewardsPerShare;
        uint256 pendingRewards;
    }

    function getCurrentFeeTokens() external view returns (address[] memory);

    function maxUniswapDisagreement() external view returns (uint256);

    function fundsWallet() external view returns (address);

    function callerRewardDivisor() external view returns (uint256);

    function maxCurveDisagreement() external view returns (uint256);

    function rewardPercent() external view returns (uint256);

    function addRewards(uint256 newOOKI, uint256 newStableCoin) external;

    function stake(address[] calldata tokens, uint256[] calldata values) external;

    function unstake(address[] calldata tokens, uint256[] calldata values) external;

    function earned(address account)
        external
        view
        returns (
            uint256 bzrxRewardsEarned,
            uint256 stableCoinRewardsEarned,
            uint256 bzrxRewardsVesting,
            uint256 stableCoinRewardsVesting,
            uint256 sushiRewardsEarned
        );

    function pendingCrvRewards(address account)
        external
        view
        returns (
            uint256 bzrxRewardsEarned,
            uint256 stableCoinRewardsEarned,
            uint256 bzrxRewardsVesting,
            uint256 stableCoinRewardsVesting,
            uint256 sushiRewardsEarned
        );

    function getVariableWeights()
        external
        view
        returns (
            uint256 vBZRXWeight,
            uint256 iOOKIWeight,
            uint256 LPTokenWeight
        );

    function balanceOfByAsset(address token, address account) external view returns (uint256 balance);

    function balanceOfByAssets(address account)
        external
        view
        returns (
            uint256 bzrxBalance,
            uint256 iOOKIBalance,
            uint256 vBZRXBalance,
            uint256 LPTokenBalance
        );

    function balanceOfStored(address account) external view returns (uint256 vestedBalance, uint256 vestingBalance);

    function totalSupplyStored() external view returns (uint256 supply);

    function vestedBalanceForAmount(
        uint256 tokenBalance,
        uint256 lastUpdate,
        uint256 vestingEndTime
    ) external view returns (uint256 vested);

    function votingBalanceOf(address account, uint256 proposalId) external view returns (uint256 totalVotes);

    function votingBalanceOfNow(address account) external view returns (uint256 totalVotes);

    function votingFromStakedBalanceOf(address account) external view returns (uint256 totalVotes);

    function _setProposalVals(address account, uint256 proposalId) external returns (uint256);

    function exit() external;

    function addAltRewards(address token, uint256 amount) external;

    function governor() external view returns (address);

    function owner() external view returns (address);

    function transferOwnership(address newOwner) external;

    function claim(bool restake) external;

    function claimAltRewards() external;

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

    /// Guardian Interface

    function _isPaused(bytes4 sig) external view returns (bool isPaused);

    function toggleFunctionPause(bytes4 sig) external;

    function toggleFunctionUnPause(bytes4 sig) external;

    function changeGuardian(address newGuardian) external;

    function getGuardian() external view returns (address guardian);

    // Admin functions

    // Withdraw all from sushi masterchef
    function exitSushi() external;

    function setGovernor(address _governor) external;

    function setApprovals(
        address _token,
        address _spender,
        uint256 _value
    ) external;

    function setVoteDelegator(address stakingGovernance) external;

    function updateSettings(address settingsTarget, bytes calldata callData) external;

    function claimSushi() external returns (uint256 sushiRewardsEarned);

    function totalSupplyByAsset(address token)
        external
        view
        returns (uint256);
}

pragma solidity ^0.5.0;

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.
 *
 * 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(isOwner(), "Ownable: caller is not the owner");
        _;
    }

    /**
     * @dev Returns true if the caller is the current owner.
     */
    function isOwner() public view returns (bool) {
        return _msgSender() == _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 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 onlyOwner {
        _transferOwnership(newOwner);
    }

    /**
     * @dev Transfers ownership of the contract to a new account (`newOwner`).
     */
    function _transferOwnership(address newOwner) internal {
        require(newOwner != address(0), "Ownable: new owner is the zero address");
        emit OwnershipTransferred(_owner, newOwner);
        _owner = newOwner;
    }
}

pragma solidity ^0.5.0;

/*
 * @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.
 */
contract Context {
    // Empty internal constructor, to prevent people from mistakenly deploying
    // an instance of this contract, which should be used via inheritance.
    constructor () internal { }
    // solhint-disable-previous-line no-empty-blocks

    function _msgSender() internal view returns (address payable) {
        return msg.sender;
    }

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

/**
 * Copyright 2017-2022, OokiDao. All Rights Reserved.
 * Licensed under the Apache License, Version 2.0.
 */

pragma solidity 0.5.17;

import "SafeERC20.sol";
import "IUniswapV2Router.sol";
import "ICurve3Pool.sol";
import "ICurveMinter.sol";
import "ICurve3PoolGauge.sol";
import "IBZx.sol";
import "IBZRXv2Converter.sol";

contract StakingConstantsV2 {
    address internal constant ZERO_ADDRESS = address(0);

    address public constant BZRX = 0x56d811088235F11C8920698a204A5010a788f4b3;
    address public constant OOKI = 0x0De05F6447ab4D22c8827449EE4bA2D5C288379B;
    address public constant vBZRX = 0xB72B31907C1C95F3650b64b2469e08EdACeE5e8F;
    address public constant iOOKI = 0x05d5160cbc6714533ef44CEd6dd32112d56Ad7da;
    address public constant OOKI_ETH_LP = 0xEaaddE1E14C587a7Fb4Ba78eA78109BB32975f1e; // sushiswap

    uint256 internal constant cliffDuration = 15768000; // 86400 * 365 * 0.5
    uint256 internal constant vestingDuration = 126144000; // 86400 * 365 * 4
    uint256 internal constant vestingDurationAfterCliff = 110376000; // 86400 * 365 * 3.5
    uint256 internal constant vestingStartTimestamp = 1594648800; // start_time
    uint256 internal constant vestingCliffTimestamp = vestingStartTimestamp + cliffDuration;
    uint256 internal constant vestingEndTimestamp = vestingStartTimestamp + vestingDuration;

    // these are 10x original balances for BZRX because of OOKI split
    uint256 internal constant _startingVBZRXBalance = 8893899330e18;
    // uint256 public constant initialCirculatingSupply = 10300000000e18 - _startingVBZRXBalance;

    address internal constant SUSHI_MASTERCHEF = 0xc2EdaD668740f1aA35E4D8f227fB8E17dcA888Cd;
    uint256 internal constant OOKI_ETH_SUSHI_MASTERCHEF_PID = 335;
    address public constant SUSHI = 0x6B3595068778DD592e39A122f4f5a5cF09C90fE2;

    ICurve3Pool public constant curve3pool = ICurve3Pool(0xbEbc44782C7dB0a1A60Cb6fe97d0b483032FF1C7);
    IERC20 public constant curve3Crv = IERC20(0x6c3F90f043a72FA612cbac8115EE7e52BDe6E490);

    ICurveMinter public constant curveMinter = ICurveMinter(0xd061D61a4d941c39E5453435B6345Dc261C2fcE0);

    IBZRXv2Converter public constant CONVERTER = IBZRXv2Converter(0x6BE9B7406260B6B6db79a1D4997e7f8f5c9D7400);

    event Stake(address indexed user, address indexed token, address indexed delegate, uint256 amount);

    event Unstake(address indexed user, address indexed token, address indexed delegate, uint256 amount);

    event Claim(address indexed user, uint256 ookiAmount, uint256 stableCoinAmount);

    event AddAltRewards(address indexed sender, address indexed token, uint256 amount);

    event ClaimAltRewards(address indexed user, address indexed token, uint256 amount);

    event AddRewards(address indexed sender, uint256 ookiAmount, uint256 stableCoinAmount);
}

/**
 * Copyright 2017-2022, OokiDao. All Rights Reserved.
 * Licensed under the Apache License, Version 2.0.
 */

pragma solidity 0.5.17;


interface IUniswapV2Router {
    // 0x38ed1739
    function swapExactTokensForTokens(
        uint256 amountIn,
        uint256 amountOutMin,
        address[] calldata path,
        address to,
        uint256 deadline)
        external
        returns (uint256[] memory amounts);

    // 0x8803dbee
    function swapTokensForExactTokens(
        uint256 amountOut,
        uint256 amountInMax,
        address[] calldata path,
        address to,
        uint256 deadline)
        external
        returns (uint256[] memory amounts);

    // 0x1f00ca74
    function getAmountsIn(
        uint256 amountOut,
        address[] calldata path)
        external
        view
        returns (uint256[] memory amounts);

    // 0xd06ca61f
    function getAmountsOut(
        uint256 amountIn,
        address[] calldata path)
        external
        view
        returns (uint256[] memory amounts);
}

/**
 * Copyright 2017-2022, OokiDao. All Rights Reserved.
 * Licensed under the Apache License, Version 2.0.
 */

pragma solidity >=0.5.0 <=0.8.4;

interface ICurve3Pool {
    function add_liquidity(
        uint256[3] calldata amounts,
        uint256 min_mint_amount)
        external;

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

/**
 * Copyright 2017-2022, OokiDao. All Rights Reserved.
 * Licensed under the Apache License, Version 2.0.
 */

pragma solidity >=0.5.0 <=0.8.4;
pragma experimental ABIEncoderV2;

//0xd061D61a4d941c39E5453435B6345Dc261C2fcE0 eth mainnet
interface ICurveMinter {

    function mint(
        address _addr
    )
    external;
}

/**
 * Copyright 2017-2022, OokiDao. All Rights Reserved.
 * Licensed under the Apache License, Version 2.0.
 */

pragma solidity >=0.5.0 <=0.8.4;
pragma experimental ABIEncoderV2;

//0xbFcF63294aD7105dEa65aA58F8AE5BE2D9d0952A eth mainnet
interface ICurve3PoolGauge {
    function balanceOf(
        address _addr
    )
        external
        view
        returns (uint256);

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

    function claimable_tokens(address)
        external
        returns (uint256);

    function deposit(
        uint256 _amount
    )
        external;

    function deposit(
        uint256 _amount,
        address _addr
    )
    external;

    function withdraw(
        uint256 _amount
    )
        external;

    function set_approve_deposit(
        address _addr,
        bool can_deposit
    )
        external;
}

/**
 * Copyright 2017-2022, OokiDao. All Rights Reserved.
 * Licensed under the Apache-2.0
 */
// SPDX-License-Identifier: Apache-2.0
pragma solidity >=0.5.0 <=0.8.4;
pragma experimental ABIEncoderV2;

/// @title A proxy interface for The Protocol
/// @author bZeroX
/// @notice This is just an interface, not to be deployed itself.
/// @dev This interface is to be used for the protocol interactions.
interface IBZx {
    ////// Protocol //////

    /// @dev adds or replaces existing proxy module
    /// @param target target proxy module address
    function replaceContract(address target) external;

    /// @dev updates all proxy modules addreses and function signatures.
    /// sigsArr and targetsArr should be of equal length
    /// @param sigsArr array of function signatures
    /// @param targetsArr array of target proxy module addresses
    function setTargets(
        string[] calldata sigsArr,
        address[] calldata targetsArr
    ) external;

    /// @dev returns protocol module address given a function signature
    /// @return module address
    function getTarget(string calldata sig) external view returns (address);

    ////// Protocol Settings //////

    /// @dev sets price feed contract address. The contract on the addres should implement IPriceFeeds interface
    /// @param newContract module address for the IPriceFeeds implementation
    function setPriceFeedContract(address newContract) external;

    /// @dev sets swaps contract address. The contract on the addres should implement ISwapsImpl interface
    /// @param newContract module address for the ISwapsImpl implementation
    function setSwapsImplContract(address newContract) external;

    /// @dev sets loan pool with assets. Accepts two arrays of equal length
    /// @param pools array of address of pools
    /// @param assets array of addresses of assets
    function setLoanPool(address[] calldata pools, address[] calldata assets)
        external;

    /// @dev updates list of supported tokens, it can be use also to disable or enable particualr token
    /// @param addrs array of address of pools
    /// @param toggles array of addresses of assets
    /// @param withApprovals resets tokens to unlimited approval with the swaps integration (kyber, etc.)
    function setSupportedTokens(
        address[] calldata addrs,
        bool[] calldata toggles,
        bool withApprovals
    ) external;

    /// @dev sets lending fee with WEI_PERCENT_PRECISION
    /// @param newValue lending fee percent
    function setLendingFeePercent(uint256 newValue) external;

    /// @dev sets trading fee with WEI_PERCENT_PRECISION
    /// @param newValue trading fee percent
    function setTradingFeePercent(uint256 newValue) external;

    /// @dev sets borrowing fee with WEI_PERCENT_PRECISION
    /// @param newValue borrowing fee percent
    function setBorrowingFeePercent(uint256 newValue) external;

    /// @dev sets affiliate fee with WEI_PERCENT_PRECISION
    /// @param newValue affiliate fee percent
    function setAffiliateFeePercent(uint256 newValue) external;

    /// @dev sets liquidation inncetive percent per loan per token. This is the profit percent
    /// that liquidator gets in the process of liquidating.
    /// @param loanTokens array list of loan tokens
    /// @param collateralTokens array list of collateral tokens
    /// @param amounts array list of liquidation inncetive amount
    function setLiquidationIncentivePercent(
        address[] calldata loanTokens,
        address[] calldata collateralTokens,
        uint256[] calldata amounts
    ) external;

    /// @dev sets max swap rate slippage percent.
    /// @param newAmount max swap rate slippage percent.
    function setMaxDisagreement(uint256 newAmount) external;

    /// TODO
    function setSourceBufferPercent(uint256 newAmount) external;

    /// @dev sets maximum supported swap size in ETH
    /// @param newAmount max swap size in ETH.
    function setMaxSwapSize(uint256 newAmount) external;

    /// @dev sets fee controller address
    /// @param newController address of the new fees controller
    function setFeesController(address newController) external;

    /// @dev withdraws lending fees to receiver. Only can be called by feesController address
    /// @param tokens array of token addresses.
    /// @param receiver fees receiver address
    /// @return amounts array of amounts withdrawn
    function withdrawFees(
        address[] calldata tokens,
        address receiver,
        FeeClaimType feeType
    ) external returns (uint256[] memory amounts);

    /// @dev withdraw protocol token (BZRX) from vesting contract vBZRX
    /// @param receiver address of BZRX tokens claimed
    /// @param amount of BZRX token to be claimed. max is claimed if amount is greater than balance.
    /// @return rewardToken reward token address
    /// @return withdrawAmount amount
    function withdrawProtocolToken(address receiver, uint256 amount)
        external
        returns (address rewardToken, uint256 withdrawAmount);

    /// @dev depozit protocol token (BZRX)
    /// @param amount address of BZRX tokens to deposit
    function depositProtocolToken(uint256 amount) external;

    function grantRewards(address[] calldata users, uint256[] calldata amounts)
        external
        returns (uint256 totalAmount);

    // NOTE: this doesn't sanitize inputs -> inaccurate values may be returned if there are duplicates tokens input
    function queryFees(address[] calldata tokens, FeeClaimType feeType)
        external
        view
        returns (uint256[] memory amountsHeld, uint256[] memory amountsPaid);

    function priceFeeds() external view returns (address);

    function swapsImpl() external view returns (address);

    function logicTargets(bytes4) external view returns (address);

    function loans(bytes32) external view returns (Loan memory);

    function loanParams(bytes32) external view returns (LoanParams memory);

    // we don't use this yet
    // function lenderOrders(address, bytes32) external returns (Order memory);
    // function borrowerOrders(address, bytes32) external returns (Order memory);

    function delegatedManagers(bytes32, address) external view returns (bool);

    function lenderInterest(address, address)
        external
        view
        returns (LenderInterest memory);

    function loanInterest(bytes32) external view returns (LoanInterest memory);

    function feesController() external view returns (address);

    function lendingFeePercent() external view returns (uint256);

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

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

    function borrowingFeePercent() external view returns (uint256);

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

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

    function protocolTokenHeld() external view returns (uint256);

    function protocolTokenPaid() external view returns (uint256);

    function affiliateFeePercent() external view returns (uint256);

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

    function loanPoolToUnderlying(address) external view returns (address);

    function underlyingToLoanPool(address) external view returns (address);

    function supportedTokens(address) external view returns (bool);

    function maxDisagreement() external view returns (uint256);

    function sourceBufferPercent() external view returns (uint256);

    function maxSwapSize() external view returns (uint256);

    /// @dev get list of loan pools in the system. Ordering is not guaranteed
    /// @param start start index
    /// @param count number of pools to return
    /// @return loanPoolsList array of loan pools
    function getLoanPoolsList(uint256 start, uint256 count)
        external
        view
        returns (address[] memory loanPoolsList);

    /// @dev checks whether addreess is a loan pool address
    /// @return boolean
    function isLoanPool(address loanPool) external view returns (bool);

    ////// Loan Settings //////

    /// @dev creates new loan param settings
    /// @param loanParamsList array of LoanParams
    /// @return loanParamsIdList array of loan ids created
    function setupLoanParams(LoanParams[] calldata loanParamsList)
        external
        returns (bytes32[] memory loanParamsIdList);

    /// @dev Deactivates LoanParams for future loans. Active loans using it are unaffected.
    /// @param loanParamsIdList array of loan ids
    function disableLoanParams(bytes32[] calldata loanParamsIdList) external;

    /// @dev gets array of LoanParams by given ids
    /// @param loanParamsIdList array of loan ids
    /// @return loanParamsList array of LoanParams
    function getLoanParams(bytes32[] calldata loanParamsIdList)
        external
        view
        returns (LoanParams[] memory loanParamsList);

    /// @dev Enumerates LoanParams in the system by owner
    /// @param owner of the loan params
    /// @param start number of loans to return
    /// @param count total number of the items
    /// @return loanParamsList array of LoanParams
    function getLoanParamsList(
        address owner,
        uint256 start,
        uint256 count
    ) external view returns (bytes32[] memory loanParamsList);

    /// @dev returns total loan principal for token address
    /// @param lender address
    /// @param loanToken address
    /// @return total principal of the loan
    function getTotalPrincipal(address lender, address loanToken)
        external
        view
        returns (uint256);

    ////// Loan Openings //////

    /// @dev This is THE function that borrows or trades on the protocol
    /// @param loanParamsId id of the LoanParam created beforehand by setupLoanParams function
    /// @param loanId id of existing loan, if 0, start a new loan
    /// @param isTorqueLoan boolean whether it is toreque or non torque loan
    /// @param initialMargin in WEI_PERCENT_PRECISION
    /// @param sentAddresses array of size 4:
    ///         lender: must match loan if loanId provided
    ///         borrower: must match loan if loanId provided
    ///         receiver: receiver of funds (address(0) assumes borrower address)
    ///         manager: delegated manager of loan unless address(0)
    /// @param sentValues array of size 5:
    ///         newRate: new loan interest rate
    ///         newPrincipal: new loan size (borrowAmount + any borrowed interest)
    ///         torqueInterest: new amount of interest to escrow for Torque loan (determines initial loan length)
    ///         loanTokenReceived: total loanToken deposit (amount not sent to borrower in the case of Torque loans)
    ///         collateralTokenReceived: total collateralToken deposit
    /// @param loanDataBytes required when sending ether
    /// @return principal of the loan and collateral amount
    function borrowOrTradeFromPool(
        bytes32 loanParamsId,
        bytes32 loanId,
        bool isTorqueLoan,
        uint256 initialMargin,
        address[4] calldata sentAddresses,
        uint256[5] calldata sentValues,
        bytes calldata loanDataBytes
    ) external payable returns (LoanOpenData memory);

    /// @dev sets/disables/enables the delegated manager for the loan
    /// @param loanId id of the loan
    /// @param delegated delegated manager address
    /// @param toggle boolean set enabled or disabled
    function setDelegatedManager(
        bytes32 loanId,
        address delegated,
        bool toggle
    ) external;

    /// @dev estimates margin exposure for simulated position
    /// @param loanToken address of the loan token
    /// @param collateralToken address of collateral token
    /// @param loanTokenSent amout of loan token sent
    /// @param collateralTokenSent amount of collateral token sent
    /// @param interestRate yearly interest rate
    /// @param newPrincipal principal amount of the loan
    /// @return estimated margin exposure amount
    function getEstimatedMarginExposure(
        address loanToken,
        address collateralToken,
        uint256 loanTokenSent,
        uint256 collateralTokenSent,
        uint256 interestRate,
        uint256 newPrincipal
    ) external view returns (uint256);

    /// @dev calculates required collateral for simulated position
    /// @param loanToken address of loan token
    /// @param collateralToken address of collateral token
    /// @param newPrincipal principal amount of the loan
    /// @param marginAmount margin amount of the loan
    /// @param isTorqueLoan boolean torque or non torque loan
    /// @return collateralAmountRequired amount required
    function getRequiredCollateral(
        address loanToken,
        address collateralToken,
        uint256 newPrincipal,
        uint256 marginAmount,
        bool isTorqueLoan
    ) external view returns (uint256 collateralAmountRequired);

    function getRequiredCollateralByParams(
        bytes32 loanParamsId,
        uint256 newPrincipal
    ) external view returns (uint256 collateralAmountRequired);

    /// @dev calculates borrow amount for simulated position
    /// @param loanToken address of loan token
    /// @param collateralToken address of collateral token
    /// @param collateralTokenAmount amount of collateral token sent
    /// @param marginAmount margin amount
    /// @param isTorqueLoan boolean torque or non torque loan
    /// @return borrowAmount possible borrow amount
    function getBorrowAmount(
        address loanToken,
        address collateralToken,
        uint256 collateralTokenAmount,
        uint256 marginAmount,
        bool isTorqueLoan
    ) external view returns (uint256 borrowAmount);

    function getBorrowAmountByParams(
        bytes32 loanParamsId,
        uint256 collateralTokenAmount
    ) external view returns (uint256 borrowAmount);

    ////// Loan Closings //////

    /// @dev liquidates unhealty loans
    /// @param loanId id of the loan
    /// @param receiver address receiving liquidated loan collateral
    /// @param closeAmount amount to close denominated in loanToken
    /// @return loanCloseAmount amount of the collateral token of the loan
    /// @return seizedAmount sezied amount in the collateral token
    /// @return seizedToken loan token address
    function liquidate(
        bytes32 loanId,
        address receiver,
        uint256 closeAmount
    )
        external
        payable
        returns (
            uint256 loanCloseAmount,
            uint256 seizedAmount,
            address seizedToken
        );

    /// @dev rollover loan
    /// @param loanId id of the loan
    /// @param loanDataBytes reserved for future use.
    function rollover(bytes32 loanId, bytes calldata loanDataBytes)
        external
        returns (address rebateToken, uint256 gasRebate);

    /// @dev close position with loan token deposit
    /// @param loanId id of the loan
    /// @param receiver collateral token reciever address
    /// @param depositAmount amount of loan token to deposit
    /// @return loanCloseAmount loan close amount
    /// @return withdrawAmount loan token withdraw amount
    /// @return withdrawToken loan token address
    function closeWithDeposit(
        bytes32 loanId,
        address receiver,
        uint256 depositAmount // denominated in loanToken
    )
        external
        payable
        returns (
            uint256 loanCloseAmount,
            uint256 withdrawAmount,
            address withdrawToken
        );

    /// @dev close position with swap
    /// @param loanId id of the loan
    /// @param receiver collateral token reciever address
    /// @param swapAmount amount of loan token to swap
    /// @param returnTokenIsCollateral boolean whether to return tokens is collateral
    /// @param loanDataBytes reserved for future use
    /// @return loanCloseAmount loan close amount
    /// @return withdrawAmount loan token withdraw amount
    /// @return withdrawToken loan token address
    function closeWithSwap(
        bytes32 loanId,
        address receiver,
        uint256 swapAmount, // denominated in collateralToken
        bool returnTokenIsCollateral, // true: withdraws collateralToken, false: withdraws loanToken
        bytes calldata loanDataBytes
    )
        external
        returns (
            uint256 loanCloseAmount,
            uint256 withdrawAmount,
            address withdrawToken
        );

    ////// Loan Closings With Gas Token //////

    /// @dev liquidates unhealty loans by using Gas token
    /// @param loanId id of the loan
    /// @param receiver address receiving liquidated loan collateral
    /// @param gasTokenUser user address of the GAS token
    /// @param closeAmount amount to close denominated in loanToken
    /// @return loanCloseAmount loan close amount
    /// @return seizedAmount loan token withdraw amount
    /// @return seizedToken loan token address
    function liquidateWithGasToken(
        bytes32 loanId,
        address receiver,
        address gasTokenUser,
        uint256 closeAmount // denominated in loanToken
    )
        external
        payable
        returns (
            uint256 loanCloseAmount,
            uint256 seizedAmount,
            address seizedToken
        );

    /// @dev rollover loan
    /// @param loanId id of the loan
    /// @param gasTokenUser user address of the GAS token
    function rolloverWithGasToken(
        bytes32 loanId,
        address gasTokenUser,
        bytes calldata /*loanDataBytes*/
    ) external returns (address rebateToken, uint256 gasRebate);

    /// @dev close position with loan token deposit
    /// @param loanId id of the loan
    /// @param receiver collateral token reciever address
    /// @param gasTokenUser user address of the GAS token
    /// @param depositAmount amount of loan token to deposit denominated in loanToken
    /// @return loanCloseAmount loan close amount
    /// @return withdrawAmount loan token withdraw amount
    /// @return withdrawToken loan token address
    function closeWithDepositWithGasToken(
        bytes32 loanId,
        address receiver,
        address gasTokenUser,
        uint256 depositAmount
    )
        external
        payable
        returns (
            uint256 loanCloseAmount,
            uint256 withdrawAmount,
            address withdrawToken
        );

    /// @dev close position with swap
    /// @param loanId id of the loan
    /// @param receiver collateral token reciever address
    /// @param gasTokenUser user address of the GAS token
    /// @param swapAmount amount of loan token to swap denominated in collateralToken
    /// @param returnTokenIsCollateral  true: withdraws collateralToken, false: withdraws loanToken
    /// @return loanCloseAmount loan close amount
    /// @return withdrawAmount loan token withdraw amount
    /// @return withdrawToken loan token address
    function closeWithSwapWithGasToken(
        bytes32 loanId,
        address receiver,
        address gasTokenUser,
        uint256 swapAmount,
        bool returnTokenIsCollateral,
        bytes calldata loanDataBytes
    )
        external
        returns (
            uint256 loanCloseAmount,
            uint256 withdrawAmount,
            address withdrawToken
        );

    ////// Loan Maintenance //////

    /// @dev deposit collateral to existing loan
    /// @param loanId existing loan id
    /// @param depositAmount amount to deposit which must match msg.value if ether is sent
    function depositCollateral(bytes32 loanId, uint256 depositAmount)
        external
        payable;

    /// @dev withdraw collateral from existing loan
    /// @param loanId existing lona id
    /// @param receiver address of withdrawn tokens
    /// @param withdrawAmount amount to withdraw
    /// @return actualWithdrawAmount actual amount withdrawn
    function withdrawCollateral(
        bytes32 loanId,
        address receiver,
        uint256 withdrawAmount
    ) external returns (uint256 actualWithdrawAmount);

    /// @dev withdraw accrued interest rate for a loan given token address
    /// @param loanToken loan token address
    function withdrawAccruedInterest(address loanToken) external;

    /// @dev extends loan duration by depositing more collateral
    /// @param loanId id of the existing loan
    /// @param depositAmount amount to deposit
    /// @param useCollateral boolean whether to extend using collateral or deposit amount
    /// @return secondsExtended by that number of seconds loan duration was extended
    function extendLoanDuration(
        bytes32 loanId,
        uint256 depositAmount,
        bool useCollateral,
        bytes calldata // for future use /*loanDataBytes*/
    ) external payable returns (uint256 secondsExtended);

    /// @dev reduces loan duration by withdrawing collateral
    /// @param loanId id of the existing loan
    /// @param receiver address to receive tokens
    /// @param withdrawAmount amount to withdraw
    /// @return secondsReduced by that number of seconds loan duration was extended
    function reduceLoanDuration(
        bytes32 loanId,
        address receiver,
        uint256 withdrawAmount
    ) external returns (uint256 secondsReduced);

    function setDepositAmount(
        bytes32 loanId,
        uint256 depositValueAsLoanToken,
        uint256 depositValueAsCollateralToken
    ) external;

    function claimRewards(address receiver)
        external
        returns (uint256 claimAmount);

    function transferLoan(bytes32 loanId, address newOwner) external;

    function rewardsBalanceOf(address user)
        external
        view
        returns (uint256 rewardsBalance);

    /// @dev Gets current lender interest data totals for all loans with a specific oracle and interest token
    /// @param lender The lender address
    /// @param loanToken The loan token address
    /// @return interestPaid The total amount of interest that has been paid to a lender so far
    /// @return interestPaidDate The date of the last interest pay out, or 0 if no interest has been withdrawn yet
    /// @return interestOwedPerDay The amount of interest the lender is earning per day
    /// @return interestUnPaid The total amount of interest the lender is owned and not yet withdrawn
    /// @return interestFeePercent The fee retained by the protocol before interest is paid to the lender
    /// @return principalTotal The total amount of outstading principal the lender has loaned
    function getLenderInterestData(address lender, address loanToken)
        external
        view
        returns (
            uint256 interestPaid,
            uint256 interestPaidDate,
            uint256 interestOwedPerDay,
            uint256 interestUnPaid,
            uint256 interestFeePercent,
            uint256 principalTotal
        );

    /// @dev Gets current interest data for a loan
    /// @param loanId A unique id representing the loan
    /// @return loanToken The loan token that interest is paid in
    /// @return interestOwedPerDay The amount of interest the borrower is paying per day
    /// @return interestDepositTotal The total amount of interest the borrower has deposited
    /// @return interestDepositRemaining The amount of deposited interest that is not yet owed to a lender
    function getLoanInterestData(bytes32 loanId)
        external
        view
        returns (
            address loanToken,
            uint256 interestOwedPerDay,
            uint256 interestDepositTotal,
            uint256 interestDepositRemaining
        );

    /// @dev gets list of loans of particular user address
    /// @param user address of the loans
    /// @param start of the index
    /// @param count number of loans to return
    /// @param loanType type of the loan: All(0), Margin(1), NonMargin(2)
    /// @param isLender whether to list lender loans or borrower loans
    /// @param unsafeOnly booleat if true return only unsafe loans that are open for liquidation
    /// @return loansData LoanReturnData array of loans
    function getUserLoans(
        address user,
        uint256 start,
        uint256 count,
        LoanType loanType,
        bool isLender,
        bool unsafeOnly
    ) external view returns (LoanReturnData[] memory loansData);

    function getUserLoansCount(address user, bool isLender)
        external
        view
        returns (uint256);

    /// @dev gets existing loan
    /// @param loanId id of existing loan
    /// @return loanData array of loans
    function getLoan(bytes32 loanId)
        external
        view
        returns (LoanReturnData memory loanData);

    /// @dev get current active loans in the system
    /// @param start of the index
    /// @param count number of loans to return
    /// @param unsafeOnly boolean if true return unsafe loan only (open for liquidation)
    function getActiveLoans(
        uint256 start,
        uint256 count,
        bool unsafeOnly
    ) external view returns (LoanReturnData[] memory loansData);

    /// @dev get current active loans in the system
    /// @param start of the index
    /// @param count number of loans to return
    /// @param unsafeOnly boolean if true return unsafe loan only (open for liquidation)
    /// @param isLiquidatable boolean if true return liquidatable loans only
    function getActiveLoansAdvanced(
        uint256 start,
        uint256 count,
        bool unsafeOnly,
        bool isLiquidatable
    ) external view returns (LoanReturnData[] memory loansData);

    function getActiveLoansCount() external view returns (uint256);

    ////// Swap External //////

    /// @dev swap thru external integration
    /// @param sourceToken source token address
    /// @param destToken destintaion token address
    /// @param receiver address to receive tokens
    /// @param returnToSender TODO
    /// @param sourceTokenAmount source token amount
    /// @param requiredDestTokenAmount destination token amount
    /// @param swapData TODO
    /// @return destTokenAmountReceived destination token received
    /// @return sourceTokenAmountUsed source token amount used
    function swapExternal(
        address sourceToken,
        address destToken,
        address receiver,
        address returnToSender,
        uint256 sourceTokenAmount,
        uint256 requiredDestTokenAmount,
        bytes calldata swapData
    )
        external
        payable
        returns (
            uint256 destTokenAmountReceived,
            uint256 sourceTokenAmountUsed
        );

    /// @dev swap thru external integration using GAS
    /// @param sourceToken source token address
    /// @param destToken destintaion token address
    /// @param receiver address to receive tokens
    /// @param returnToSender TODO
    /// @param gasTokenUser user address of the GAS token
    /// @param sourceTokenAmount source token amount
    /// @param requiredDestTokenAmount destination token amount
    /// @param swapData TODO
    /// @return destTokenAmountReceived destination token received
    /// @return sourceTokenAmountUsed source token amount used
    function swapExternalWithGasToken(
        address sourceToken,
        address destToken,
        address receiver,
        address returnToSender,
        address gasTokenUser,
        uint256 sourceTokenAmount,
        uint256 requiredDestTokenAmount,
        bytes calldata swapData
    )
        external
        payable
        returns (
            uint256 destTokenAmountReceived,
            uint256 sourceTokenAmountUsed
        );

    /// @dev calculate simulated return of swap
    /// @param sourceToken source token address
    /// @param destToken destination token address
    /// @param sourceTokenAmount source token amount
    /// @return amoun denominated in destination token
    function getSwapExpectedReturn(
        address sourceToken,
        address destToken,
        uint256 sourceTokenAmount
    ) external view returns (uint256);

    function owner() external view returns (address);

    function transferOwnership(address newOwner) external;


    /// Guardian Interface

    function _isPaused(bytes4 sig) external view returns (bool isPaused);

    function toggleFunctionPause(bytes4 sig) external;

    function toggleFunctionUnPause(bytes4 sig) external;

    function changeGuardian(address newGuardian) external;

    function getGuardian() external view returns (address guardian);

    /// Loan Cleanup Interface

    function cleanupLoans(
        address loanToken,
        bytes32[] calldata loanIds)
        external
        payable
        returns (uint256 totalPrincipalIn);

    struct LoanParams {
        bytes32 id;
        bool active;
        address owner;
        address loanToken;
        address collateralToken;
        uint256 minInitialMargin;
        uint256 maintenanceMargin;
        uint256 maxLoanTerm;
    }

    struct LoanOpenData {
        bytes32 loanId;
        uint256 principal;
        uint256 collateral;
    }

    enum LoanType {
        All,
        Margin,
        NonMargin
    }

    struct LoanReturnData {
        bytes32 loanId;
        uint96 endTimestamp;
        address loanToken;
        address collateralToken;
        uint256 principal;
        uint256 collateral;
        uint256 interestOwedPerDay;
        uint256 interestDepositRemaining;
        uint256 startRate;
        uint256 startMargin;
        uint256 maintenanceMargin;
        uint256 currentMargin;
        uint256 maxLoanTerm;
        uint256 maxLiquidatable;
        uint256 maxSeizable;
        uint256 depositValueAsLoanToken;
        uint256 depositValueAsCollateralToken;
    }

    enum FeeClaimType {
        All,
        Lending,
        Trading,
        Borrowing
    }

    struct Loan {
        bytes32 id; // id of the loan
        bytes32 loanParamsId; // the linked loan params id
        bytes32 pendingTradesId; // the linked pending trades id
        uint256 principal; // total borrowed amount outstanding
        uint256 collateral; // total collateral escrowed for the loan
        uint256 startTimestamp; // loan start time
        uint256 endTimestamp; // for active loans, this is the expected loan end time, for in-active loans, is the actual (past) end time
        uint256 startMargin; // initial margin when the loan opened
        uint256 startRate; // reference rate when the loan opened for converting collateralToken to loanToken
        address borrower; // borrower of this loan
        address lender; // lender of this loan
        bool active; // if false, the loan has been fully closed
    }

    struct LenderInterest {
        uint256 principalTotal; // total borrowed amount outstanding of asset
        uint256 owedPerDay; // interest owed per day for all loans of asset
        uint256 owedTotal; // total interest owed for all loans of asset (assuming they go to full term)
        uint256 paidTotal; // total interest paid so far for asset
        uint256 updatedTimestamp; // last update
    }

    struct LoanInterest {
        uint256 owedPerDay; // interest owed per day for loan
        uint256 depositTotal; // total escrowed interest for loan
        uint256 updatedTimestamp; // last update
    }
}

/**
 * Copyright 2017-2022, OokiDao. All Rights Reserved.
 * Licensed under the Apache-2.0
 */
// SPDX-License-Identifier: Apache-2.0
pragma solidity >=0.5.0 <=0.8.4;
pragma experimental ABIEncoderV2;

interface IBZRXv2Converter {
    function convert(address receiver, uint256 _tokenAmount) external;
}

{
  "evmVersion": "istanbul",
  "optimizer": {
    "enabled": true,
    "runs": 200
  },
  "libraries": {
    "StakingModularProxy.sol": {}
  },
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "devdoc",
        "userdoc",
        "metadata",
        "abi"
      ]
    }
  }
}

• No Contract Security Audit Submitted- Submit Audit Here

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