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// SPDX-License-Identifier: GPL-3.0

/*
    This file is part of the Enzyme Protocol.

    (c) Enzyme Council <[email protected]>

    For the full license information, please view the LICENSE
    file that was distributed with this source code.
*/

pragma solidity 0.6.12;
pragma experimental ABIEncoderV2;

import "../utils/actions/ParaSwapV4ActionsMixin.sol";
import "../utils/AdapterBase2.sol";

/// @title ParaSwapV4Adapter Contract
/// @author Enzyme Council <[email protected]>
/// @notice Adapter for interacting with ParaSwap (v4)
/// @dev Does not allow any protocol that collects protocol fees in ETH, e.g., 0x v3
contract ParaSwapV4Adapter is AdapterBase2, ParaSwapV4ActionsMixin {
    using SafeMath for uint256;

    constructor(
        address _integrationManager,
        address _augustusSwapper,
        address _tokenTransferProxy
    )
        public
        AdapterBase2(_integrationManager)
        ParaSwapV4ActionsMixin(_augustusSwapper, _tokenTransferProxy)
    {}

    // EXTERNAL FUNCTIONS

    /// @notice Provides a constant string identifier for an adapter
    /// @return identifier_ An identifier string
    function identifier() external pure override returns (string memory identifier_) {
        return "PARA_SWAP_V4";
    }

    /// @notice Parses the expected assets to receive from a call on integration
    /// @param _selector The function selector for the callOnIntegration
    /// @param _encodedCallArgs The encoded parameters for the callOnIntegration
    /// @return spendAssetsHandleType_ A type that dictates how to handle granting
    /// the adapter access to spend assets (`None` by default)
    /// @return spendAssets_ The assets to spend in the call
    /// @return spendAssetAmounts_ The max asset amounts to spend in the call
    /// @return incomingAssets_ The assets to receive in the call
    /// @return minIncomingAssetAmounts_ The min asset amounts to receive in the call
    function parseAssetsForMethod(bytes4 _selector, bytes calldata _encodedCallArgs)
        external
        view
        override
        returns (
            IIntegrationManager.SpendAssetsHandleType spendAssetsHandleType_,
            address[] memory spendAssets_,
            uint256[] memory spendAssetAmounts_,
            address[] memory incomingAssets_,
            uint256[] memory minIncomingAssetAmounts_
        )
    {
        require(_selector == TAKE_ORDER_SELECTOR, "parseAssetsForMethod: _selector invalid");

        (
            uint256 minIncomingAssetAmount,
            ,
            address outgoingAsset,
            uint256 outgoingAssetAmount,
            IParaSwapV4AugustusSwapper.Path[] memory paths
        ) = __decodeCallArgs(_encodedCallArgs);

        spendAssets_ = new address[](1);
        spendAssets_[0] = outgoingAsset;

        spendAssetAmounts_ = new uint256[](1);
        spendAssetAmounts_[0] = outgoingAssetAmount;

        incomingAssets_ = new address[](1);
        incomingAssets_[0] = paths[paths.length - 1].to;

        minIncomingAssetAmounts_ = new uint256[](1);
        minIncomingAssetAmounts_[0] = minIncomingAssetAmount;

        return (
            IIntegrationManager.SpendAssetsHandleType.Transfer,
            spendAssets_,
            spendAssetAmounts_,
            incomingAssets_,
            minIncomingAssetAmounts_
        );
    }

    /// @notice Trades assets on ParaSwap
    /// @param _vaultProxy The VaultProxy of the calling fund
    /// @param _encodedCallArgs Encoded order parameters
    /// @dev ParaSwap v4 completely uses entire outgoing asset balance and incoming asset
    /// is sent directly to the beneficiary (the _vaultProxy)
    function takeOrder(
        address _vaultProxy,
        bytes calldata _encodedCallArgs,
        bytes calldata
    ) external onlyIntegrationManager {
        (
            uint256 minIncomingAssetAmount,
            uint256 expectedIncomingAssetAmount,
            address outgoingAsset,
            uint256 outgoingAssetAmount,
            IParaSwapV4AugustusSwapper.Path[] memory paths
        ) = __decodeCallArgs(_encodedCallArgs);

        __paraSwapV4MultiSwap(
            outgoingAsset,
            outgoingAssetAmount,
            minIncomingAssetAmount,
            expectedIncomingAssetAmount,
            payable(_vaultProxy),
            paths
        );
    }

    /// @dev Helper to decode the encoded callOnIntegration call arguments
    function __decodeCallArgs(bytes memory _encodedCallArgs)
        private
        pure
        returns (
            uint256 minIncomingAssetAmount_,
            uint256 expectedIncomingAssetAmount_, // Passed as a courtesy to ParaSwap for analytics
            address outgoingAsset_,
            uint256 outgoingAssetAmount_,
            IParaSwapV4AugustusSwapper.Path[] memory paths_
        )
    {
        return
            abi.decode(
                _encodedCallArgs,
                (uint256, uint256, address, uint256, IParaSwapV4AugustusSwapper.Path[])
            );
    }
}

// SPDX-License-Identifier: MIT

pragma solidity >=0.6.0 <0.8.0;

/**
 * @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, with an overflow flag.
     *
     * _Available since v3.4._
     */
    function tryAdd(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        uint256 c = a + b;
        if (c < a) return (false, 0);
        return (true, c);
    }

    /**
     * @dev Returns the substraction of two unsigned integers, with an overflow flag.
     *
     * _Available since v3.4._
     */
    function trySub(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        if (b > a) return (false, 0);
        return (true, a - b);
    }

    /**
     * @dev Returns the multiplication of two unsigned integers, with an overflow flag.
     *
     * _Available since v3.4._
     */
    function tryMul(uint256 a, uint256 b) internal pure returns (bool, 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 (true, 0);
        uint256 c = a * b;
        if (c / a != b) return (false, 0);
        return (true, c);
    }

    /**
     * @dev Returns the division of two unsigned integers, with a division by zero flag.
     *
     * _Available since v3.4._
     */
    function tryDiv(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        if (b == 0) return (false, 0);
        return (true, a / b);
    }

    /**
     * @dev Returns the remainder of dividing two unsigned integers, with a division by zero flag.
     *
     * _Available since v3.4._
     */
    function tryMod(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        if (b == 0) return (false, 0);
        return (true, a % b);
    }

    /**
     * @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) {
        require(b <= a, "SafeMath: subtraction overflow");
        return a - b;
    }

    /**
     * @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) {
        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, reverting 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) {
        require(b > 0, "SafeMath: division by zero");
        return a / b;
    }

    /**
     * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
     * reverting 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) {
        require(b > 0, "SafeMath: modulo by zero");
        return a % b;
    }

    /**
     * @dev Returns the subtraction of two unsigned integers, reverting with custom message on
     * overflow (when the result is negative).
     *
     * CAUTION: This function is deprecated because it requires allocating memory for the error
     * message unnecessarily. For custom revert reasons use {trySub}.
     *
     * 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);
        return a - b;
    }

    /**
     * @dev Returns the integer division of two unsigned integers, reverting with custom message on
     * division by zero. The result is rounded towards zero.
     *
     * CAUTION: This function is deprecated because it requires allocating memory for the error
     * message unnecessarily. For custom revert reasons use {tryDiv}.
     *
     * 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);
        return a / b;
    }

    /**
     * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
     * reverting with custom message when dividing by zero.
     *
     * CAUTION: This function is deprecated because it requires allocating memory for the error
     * message unnecessarily. For custom revert reasons use {tryMod}.
     *
     * 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 <0.8.0;

import "../../utils/Context.sol";
import "./IERC20.sol";
import "../../math/SafeMath.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;

    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 virtual returns (string memory) {
        return _name;
    }

    /**
     * @dev Returns the symbol of the token, usually a shorter version of the
     * name.
     */
    function symbol() public view virtual 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 virtual returns (uint8) {
        return _decimals;
    }

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

    /**
     * @dev See {IERC20-balanceOf}.
     */
    function balanceOf(address account) public view virtual 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 virtual {
        _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 { }
}

// SPDX-License-Identifier: MIT

pragma solidity >=0.6.0 <0.8.0;

/**
 * @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);
}

// SPDX-License-Identifier: MIT

pragma solidity >=0.6.0 <0.8.0;

import "./IERC20.sol";
import "../../math/SafeMath.sol";
import "../../utils/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 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");
        }
    }
}

// SPDX-License-Identifier: MIT

pragma solidity >=0.6.2 <0.8.0;

/**
 * @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");
        require(isContract(target), "Address: call to non-contract");

        // solhint-disable-next-line avoid-low-level-calls
        (bool success, bytes memory returndata) = target.call{ value: value }(data);
        return _verifyCallResult(success, returndata, errorMessage);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but performing a static call.
     *
     * _Available since v3.3._
     */
    function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {
        return functionStaticCall(target, data, "Address: low-level static call failed");
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
     * but performing a static call.
     *
     * _Available since v3.3._
     */
    function functionStaticCall(address target, bytes memory data, string memory errorMessage) internal view returns (bytes memory) {
        require(isContract(target), "Address: static call to non-contract");

        // solhint-disable-next-line avoid-low-level-calls
        (bool success, bytes memory returndata) = target.staticcall(data);
        return _verifyCallResult(success, returndata, errorMessage);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but performing a delegate call.
     *
     * _Available since v3.4._
     */
    function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) {
        return functionDelegateCall(target, data, "Address: low-level delegate call failed");
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
     * but performing a delegate call.
     *
     * _Available since v3.4._
     */
    function functionDelegateCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) {
        require(isContract(target), "Address: delegate call to non-contract");

        // solhint-disable-next-line avoid-low-level-calls
        (bool success, bytes memory returndata) = target.delegatecall(data);
        return _verifyCallResult(success, returndata, errorMessage);
    }

    function _verifyCallResult(bool success, bytes memory returndata, string memory errorMessage) private pure returns(bytes memory) {
        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);
            }
        }
    }
}

// SPDX-License-Identifier: MIT

pragma solidity >=0.6.0 <0.8.0;

/*
 * @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: GPL-3.0

/*
    This file is part of the Enzyme Protocol.

    (c) Enzyme Council <[email protected]>

    For the full license information, please view the LICENSE
    file that was distributed with this source code.
*/

pragma solidity 0.6.12;

/// @title IIntegrationManager interface
/// @author Enzyme Council <[email protected]>
/// @notice Interface for the IntegrationManager
interface IIntegrationManager {
    enum SpendAssetsHandleType {None, Approve, Transfer, Remove}
}

// SPDX-License-Identifier: GPL-3.0

/*
    This file is part of the Enzyme Protocol.

    (c) Enzyme Council <[email protected]>

    For the full license information, please view the LICENSE
    file that was distributed with this source code.
*/

pragma solidity 0.6.12;

import "../IIntegrationManager.sol";

/// @title Integration Adapter interface
/// @author Enzyme Council <[email protected]>
/// @notice Interface for all integration adapters
interface IIntegrationAdapter {
    function identifier() external pure returns (string memory identifier_);

    function parseAssetsForMethod(bytes4 _selector, bytes calldata _encodedCallArgs)
        external
        view
        returns (
            IIntegrationManager.SpendAssetsHandleType spendAssetsHandleType_,
            address[] memory spendAssets_,
            uint256[] memory spendAssetAmounts_,
            address[] memory incomingAssets_,
            uint256[] memory minIncomingAssetAmounts_
        );
}

// SPDX-License-Identifier: GPL-3.0

/*
    This file is part of the Enzyme Protocol.

    (c) Enzyme Council <[email protected]>

    For the full license information, please view the LICENSE
    file that was distributed with this source code.
*/

pragma solidity 0.6.12;

import "@openzeppelin/contracts/token/ERC20/SafeERC20.sol";
import "@openzeppelin/contracts/token/ERC20/ERC20.sol";
import "../IIntegrationAdapter.sol";
import "./IntegrationSelectors.sol";

/// @title AdapterBase Contract
/// @author Enzyme Council <[email protected]>
/// @notice A base contract for integration adapters
abstract contract AdapterBase is IIntegrationAdapter, IntegrationSelectors {
    using SafeERC20 for ERC20;

    address internal immutable INTEGRATION_MANAGER;

    /// @dev Provides a standard implementation for transferring assets between
    /// the fund's VaultProxy and the adapter, by wrapping the adapter action.
    /// This modifier should be implemented in almost all adapter actions, unless they
    /// do not move assets or can spend and receive assets directly with the VaultProxy
    modifier fundAssetsTransferHandler(
        address _vaultProxy,
        bytes memory _encodedAssetTransferArgs
    ) {
        (
            IIntegrationManager.SpendAssetsHandleType spendAssetsHandleType,
            address[] memory spendAssets,
            uint256[] memory spendAssetAmounts,
            address[] memory incomingAssets
        ) = __decodeEncodedAssetTransferArgs(_encodedAssetTransferArgs);

        // Take custody of spend assets (if necessary)
        if (spendAssetsHandleType == IIntegrationManager.SpendAssetsHandleType.Approve) {
            for (uint256 i = 0; i < spendAssets.length; i++) {
                ERC20(spendAssets[i]).safeTransferFrom(
                    _vaultProxy,
                    address(this),
                    spendAssetAmounts[i]
                );
            }
        }

        // Execute call
        _;

        // Transfer remaining assets back to the fund's VaultProxy
        __transferContractAssetBalancesToFund(_vaultProxy, incomingAssets);
        __transferContractAssetBalancesToFund(_vaultProxy, spendAssets);
    }

    modifier onlyIntegrationManager {
        require(
            msg.sender == INTEGRATION_MANAGER,
            "Only the IntegrationManager can call this function"
        );
        _;
    }

    constructor(address _integrationManager) public {
        INTEGRATION_MANAGER = _integrationManager;
    }

    // INTERNAL FUNCTIONS

    /// @dev Helper for adapters to approve their integratees with the max amount of an asset.
    /// Since everything is done atomically, and only the balances to-be-used are sent to adapters,
    /// there is no need to approve exact amounts on every call.
    function __approveMaxAsNeeded(
        address _asset,
        address _target,
        uint256 _neededAmount
    ) internal {
        if (ERC20(_asset).allowance(address(this), _target) < _neededAmount) {
            ERC20(_asset).safeApprove(_target, type(uint256).max);
        }
    }

    /// @dev Helper to decode the _encodedAssetTransferArgs param passed to adapter call
    function __decodeEncodedAssetTransferArgs(bytes memory _encodedAssetTransferArgs)
        internal
        pure
        returns (
            IIntegrationManager.SpendAssetsHandleType spendAssetsHandleType_,
            address[] memory spendAssets_,
            uint256[] memory spendAssetAmounts_,
            address[] memory incomingAssets_
        )
    {
        return
            abi.decode(
                _encodedAssetTransferArgs,
                (IIntegrationManager.SpendAssetsHandleType, address[], uint256[], address[])
            );
    }

    /// @dev Helper to transfer full contract balances of assets to the specified VaultProxy
    function __transferContractAssetBalancesToFund(address _vaultProxy, address[] memory _assets)
        private
    {
        for (uint256 i = 0; i < _assets.length; i++) {
            uint256 postCallAmount = ERC20(_assets[i]).balanceOf(address(this));
            if (postCallAmount > 0) {
                ERC20(_assets[i]).safeTransfer(_vaultProxy, postCallAmount);
            }
        }
    }

    ///////////////////
    // STATE GETTERS //
    ///////////////////

    /// @notice Gets the `INTEGRATION_MANAGER` variable
    /// @return integrationManager_ The `INTEGRATION_MANAGER` variable value
    function getIntegrationManager() external view returns (address integrationManager_) {
        return INTEGRATION_MANAGER;
    }
}

// SPDX-License-Identifier: GPL-3.0

/*
    This file is part of the Enzyme Protocol.

    (c) Enzyme Council <[email protected]>

    For the full license information, please view the LICENSE
    file that was distributed with this source code.
*/

pragma solidity 0.6.12;

import "./AdapterBase.sol";

/// @title AdapterBase2 Contract
/// @author Enzyme Council <[email protected]>
/// @notice A base contract for integration adapters that extends AdapterBase
/// @dev This is a temporary contract that will be merged into AdapterBase with the next release
abstract contract AdapterBase2 is AdapterBase {
    /// @dev Provides a standard implementation for transferring incoming assets and
    /// unspent spend assets from an adapter to a VaultProxy at the end of an adapter action
    modifier postActionAssetsTransferHandler(
        address _vaultProxy,
        bytes memory _encodedAssetTransferArgs
    ) {
        _;

        (
            ,
            address[] memory spendAssets,
            ,
            address[] memory incomingAssets
        ) = __decodeEncodedAssetTransferArgs(_encodedAssetTransferArgs);

        __transferFullAssetBalances(_vaultProxy, incomingAssets);
        __transferFullAssetBalances(_vaultProxy, spendAssets);
    }

    /// @dev Provides a standard implementation for transferring incoming assets
    /// from an adapter to a VaultProxy at the end of an adapter action
    modifier postActionIncomingAssetsTransferHandler(
        address _vaultProxy,
        bytes memory _encodedAssetTransferArgs
    ) {
        _;

        (, , , address[] memory incomingAssets) = __decodeEncodedAssetTransferArgs(
            _encodedAssetTransferArgs
        );

        __transferFullAssetBalances(_vaultProxy, incomingAssets);
    }

    /// @dev Provides a standard implementation for transferring unspent spend assets
    /// from an adapter to a VaultProxy at the end of an adapter action
    modifier postActionSpendAssetsTransferHandler(
        address _vaultProxy,
        bytes memory _encodedAssetTransferArgs
    ) {
        _;

        (, address[] memory spendAssets, , ) = __decodeEncodedAssetTransferArgs(
            _encodedAssetTransferArgs
        );

        __transferFullAssetBalances(_vaultProxy, spendAssets);
    }

    constructor(address _integrationManager) public AdapterBase(_integrationManager) {}

    /// @dev Helper to transfer full asset balances of current contract to the specified target
    function __transferFullAssetBalances(address _target, address[] memory _assets) internal {
        for (uint256 i = 0; i < _assets.length; i++) {
            uint256 balance = ERC20(_assets[i]).balanceOf(address(this));
            if (balance > 0) {
                ERC20(_assets[i]).safeTransfer(_target, balance);
            }
        }
    }
}

// SPDX-License-Identifier: GPL-3.0

/*
    This file is part of the Enzyme Protocol.

    (c) Enzyme Council <[email protected]>

    For the full license information, please view the LICENSE
    file that was distributed with this source code.
*/

pragma solidity 0.6.12;

/// @title IntegrationSelectors Contract
/// @author Enzyme Council <[email protected]>
/// @notice Selectors for integration actions
/// @dev Selectors are created from their signatures rather than hardcoded for easy verification
abstract contract IntegrationSelectors {
    bytes4 public constant ADD_TRACKED_ASSETS_SELECTOR = bytes4(
        keccak256("addTrackedAssets(address,bytes,bytes)")
    );

    // Asset approval
    bytes4 public constant APPROVE_ASSETS_SELECTOR = bytes4(
        keccak256("approveAssets(address,bytes,bytes)")
    );

    // Trading
    bytes4 public constant TAKE_ORDER_SELECTOR = bytes4(
        keccak256("takeOrder(address,bytes,bytes)")
    );

    // Lending
    bytes4 public constant LEND_SELECTOR = bytes4(keccak256("lend(address,bytes,bytes)"));
    bytes4 public constant REDEEM_SELECTOR = bytes4(keccak256("redeem(address,bytes,bytes)"));

    // Staking
    bytes4 public constant STAKE_SELECTOR = bytes4(keccak256("stake(address,bytes,bytes)"));
    bytes4 public constant UNSTAKE_SELECTOR = bytes4(keccak256("unstake(address,bytes,bytes)"));

    // Rewards
    bytes4 public constant CLAIM_REWARDS_SELECTOR = bytes4(
        keccak256("claimRewards(address,bytes,bytes)")
    );

    // Combined
    bytes4 public constant CLAIM_REWARDS_AND_REINVEST_SELECTOR = bytes4(
        keccak256("claimRewardsAndReinvest(address,bytes,bytes)")
    );
    bytes4 public constant CLAIM_REWARDS_AND_SWAP_SELECTOR = bytes4(
        keccak256("claimRewardsAndSwap(address,bytes,bytes)")
    );
    bytes4 public constant LEND_AND_STAKE_SELECTOR = bytes4(
        keccak256("lendAndStake(address,bytes,bytes)")
    );
    bytes4 public constant UNSTAKE_AND_REDEEM_SELECTOR = bytes4(
        keccak256("unstakeAndRedeem(address,bytes,bytes)")
    );
}

// SPDX-License-Identifier: GPL-3.0

/*
    This file is part of the Enzyme Protocol.

    (c) Enzyme Council <[email protected]>

    For the full license information, please view the LICENSE
    file that was distributed with this source code.
*/

pragma solidity 0.6.12;

import "../../../../../interfaces/IParaSwapV4AugustusSwapper.sol";
import "../../../../../utils/AssetHelpers.sol";

/// @title ParaSwapV4ActionsMixin Contract
/// @author Enzyme Council <[email protected]>
/// @notice Mixin contract for interacting with ParaSwap (v4)
abstract contract ParaSwapV4ActionsMixin is AssetHelpers {
    string private constant REFERRER = "enzyme";

    address private immutable PARA_SWAP_V4_AUGUSTUS_SWAPPER;
    address private immutable PARA_SWAP_V4_TOKEN_TRANSFER_PROXY;

    constructor(address _augustusSwapper, address _tokenTransferProxy) public {
        PARA_SWAP_V4_AUGUSTUS_SWAPPER = _augustusSwapper;
        PARA_SWAP_V4_TOKEN_TRANSFER_PROXY = _tokenTransferProxy;
    }

    /// @dev Helper to execute a multiSwap() order
    function __paraSwapV4MultiSwap(
        address _fromToken,
        uint256 _fromAmount,
        uint256 _toAmount,
        uint256 _expectedAmount,
        address payable _beneficiary,
        IParaSwapV4AugustusSwapper.Path[] memory _path
    ) internal {
        __approveAssetMaxAsNeeded(_fromToken, PARA_SWAP_V4_TOKEN_TRANSFER_PROXY, _fromAmount);

        IParaSwapV4AugustusSwapper.SellData memory sellData = IParaSwapV4AugustusSwapper.SellData({
            fromToken: _fromToken,
            fromAmount: _fromAmount,
            toAmount: _toAmount,
            expectedAmount: _expectedAmount,
            beneficiary: _beneficiary,
            referrer: REFERRER,
            useReduxToken: false,
            path: _path
        });

        IParaSwapV4AugustusSwapper(PARA_SWAP_V4_AUGUSTUS_SWAPPER).multiSwap(sellData);
    }

    ///////////////////
    // STATE GETTERS //
    ///////////////////

    /// @notice Gets the `PARA_SWAP_V4_AUGUSTUS_SWAPPER` variable
    /// @return augustusSwapper_ The `PARA_SWAP_V4_AUGUSTUS_SWAPPER` variable value
    function getParaSwapV4AugustusSwapper() public view returns (address augustusSwapper_) {
        return PARA_SWAP_V4_AUGUSTUS_SWAPPER;
    }

    /// @notice Gets the `PARA_SWAP_V4_TOKEN_TRANSFER_PROXY` variable
    /// @return tokenTransferProxy_ The `PARA_SWAP_V4_TOKEN_TRANSFER_PROXY` variable value
    function getParaSwapV4TokenTransferProxy() public view returns (address tokenTransferProxy_) {
        return PARA_SWAP_V4_TOKEN_TRANSFER_PROXY;
    }
}

// SPDX-License-Identifier: GPL-3.0

/*
    This file is part of the Enzyme Protocol.

    (c) Enzyme Council <[email protected]>

    For the full license information, please view the LICENSE
    file that was distributed with this source code.
*/

pragma solidity 0.6.12;
pragma experimental ABIEncoderV2;

/// @title ParaSwap V4 IAugustusSwapper interface
interface IParaSwapV4AugustusSwapper {
    struct Route {
        address payable exchange;
        address targetExchange;
        uint256 percent;
        bytes payload;
        uint256 networkFee;
    }

    struct Path {
        address to;
        uint256 totalNetworkFee;
        Route[] routes;
    }

    struct SellData {
        address fromToken;
        uint256 fromAmount;
        uint256 toAmount;
        uint256 expectedAmount;
        address payable beneficiary;
        string referrer;
        bool useReduxToken;
        Path[] path;
    }

    function multiSwap(SellData calldata) external payable returns (uint256);
}

// SPDX-License-Identifier: GPL-3.0

/*
    This file is part of the Enzyme Protocol.

    (c) Enzyme Council <[email protected]>

    For the full license information, please view the LICENSE
    file that was distributed with this source code.
*/

pragma solidity 0.6.12;

import "@openzeppelin/contracts/math/SafeMath.sol";
import "@openzeppelin/contracts/token/ERC20/ERC20.sol";
import "@openzeppelin/contracts/token/ERC20/SafeERC20.sol";

/// @title AssetHelpers Contract
/// @author Enzyme Council <[email protected]>
/// @notice A util contract for common token actions
abstract contract AssetHelpers {
    using SafeERC20 for ERC20;
    using SafeMath for uint256;

    /// @dev Helper to approve a target account with the max amount of an asset.
    /// This is helpful for fully trusted contracts, such as adapters that
    /// interact with external protocol like Uniswap, Compound, etc.
    function __approveAssetMaxAsNeeded(
        address _asset,
        address _target,
        uint256 _neededAmount
    ) internal {
        if (ERC20(_asset).allowance(address(this), _target) < _neededAmount) {
            ERC20(_asset).safeApprove(_target, type(uint256).max);
        }
    }

    /// @dev Helper to get the balances of specified assets for a target
    function __getAssetBalances(address _target, address[] memory _assets)
        internal
        view
        returns (uint256[] memory balances_)
    {
        balances_ = new uint256[](_assets.length);
        for (uint256 i; i < _assets.length; i++) {
            balances_[i] = ERC20(_assets[i]).balanceOf(_target);
        }

        return balances_;
    }

    /// @dev Helper to transfer full asset balances from a target to the current contract.
    /// Requires an adequate allowance for each asset granted to the current contract for the target.
    function __pullFullAssetBalances(address _target, address[] memory _assets)
        internal
        returns (uint256[] memory amountsTransferred_)
    {
        amountsTransferred_ = new uint256[](_assets.length);
        for (uint256 i; i < _assets.length; i++) {
            ERC20 assetContract = ERC20(_assets[i]);
            amountsTransferred_[i] = assetContract.balanceOf(_target);
            if (amountsTransferred_[i] > 0) {
                assetContract.safeTransferFrom(_target, address(this), amountsTransferred_[i]);
            }
        }

        return amountsTransferred_;
    }

    /// @dev Helper to transfer partial asset balances from a target to the current contract.
    /// Requires an adequate allowance for each asset granted to the current contract for the target.
    function __pullPartialAssetBalances(
        address _target,
        address[] memory _assets,
        uint256[] memory _amountsToExclude
    ) internal returns (uint256[] memory amountsTransferred_) {
        amountsTransferred_ = new uint256[](_assets.length);
        for (uint256 i; i < _assets.length; i++) {
            ERC20 assetContract = ERC20(_assets[i]);
            amountsTransferred_[i] = assetContract.balanceOf(_target).sub(_amountsToExclude[i]);
            if (amountsTransferred_[i] > 0) {
                assetContract.safeTransferFrom(_target, address(this), amountsTransferred_[i]);
            }
        }

        return amountsTransferred_;
    }

    /// @dev Helper to transfer full asset balances from the current contract to a target
    function __pushFullAssetBalances(address _target, address[] memory _assets)
        internal
        returns (uint256[] memory amountsTransferred_)
    {
        amountsTransferred_ = new uint256[](_assets.length);
        for (uint256 i; i < _assets.length; i++) {
            ERC20 assetContract = ERC20(_assets[i]);
            amountsTransferred_[i] = assetContract.balanceOf(address(this));
            if (amountsTransferred_[i] > 0) {
                assetContract.safeTransfer(_target, amountsTransferred_[i]);
            }
        }

        return amountsTransferred_;
    }
}

{
  "evmVersion": "istanbul",
  "libraries": {},
  "metadata": {
    "bytecodeHash": "ipfs",
    "useLiteralContent": true
  },
  "optimizer": {
    "details": {
      "constantOptimizer": true,
      "cse": true,
      "deduplicate": true,
      "jumpdestRemover": true,
      "orderLiterals": true,
      "peephole": true,
      "yul": false
    },
    "runs": 200
  },
  "remappings": [],
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "abi"
      ]
    }
  }
}

• No Contract Security Audit Submitted- Submit Audit Here

[{"inputs":[{"internalType":"address","name":"_integrationManager","type":"address"},{"internalType":"address","name":"_augustusSwapper","type":"address"},{"internalType":"address","name":"_tokenTransferProxy","type":"address"}],"stateMutability":"nonpayable","type":"constructor"},{"inputs":[],"name":"ADD_TRACKED_ASSETS_SELECTOR","outputs":[{"internalType":"bytes4","name":"","type":"bytes4"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"APPROVE_ASSETS_SELECTOR","outputs":[{"internalType":"bytes4","name":"","type":"bytes4"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"CLAIM_REWARDS_AND_REINVEST_SELECTOR","outputs":[{"internalType":"bytes4","name":"","type":"bytes4"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"CLAIM_REWARDS_AND_SWAP_SELECTOR","outputs":[{"internalType":"bytes4","name":"","type":"bytes4"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"CLAIM_REWARDS_SELECTOR","outputs":[{"internalType":"bytes4","name":"","type":"bytes4"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"LEND_AND_STAKE_SELECTOR","outputs":[{"internalType":"bytes4","name":"","type":"bytes4"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"LEND_SELECTOR","outputs":[{"internalType":"bytes4","name":"","type":"bytes4"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"REDEEM_SELECTOR","outputs":[{"internalType":"bytes4","name":"","type":"bytes4"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"STAKE_SELECTOR","outputs":[{"internalType":"bytes4","name":"","type":"bytes4"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"TAKE_ORDER_SELECTOR","outputs":[{"internalType":"bytes4","name":"","type":"bytes4"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"UNSTAKE_AND_REDEEM_SELECTOR","outputs":[{"internalType":"bytes4","name":"","type":"bytes4"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"UNSTAKE_SELECTOR","outputs":[{"internalType":"bytes4","name":"","type":"bytes4"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"getIntegrationManager","outputs":[{"internalType":"address","name":"integrationManager_","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"getParaSwapV4AugustusSwapper","outputs":[{"internalType":"address","name":"augustusSwapper_","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"getParaSwapV4TokenTransferProxy","outputs":[{"internalType":"address","name":"tokenTransferProxy_","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"identifier","outputs":[{"internalType":"string","name":"identifier_","type":"string"}],"stateMutability":"pure","type":"function"},{"inputs":[{"internalType":"bytes4","name":"_selector","type":"bytes4"},{"internalType":"bytes","name":"_encodedCallArgs","type":"bytes"}],"name":"parseAssetsForMethod","outputs":[{"internalType":"enum IIntegrationManager.SpendAssetsHandleType","name":"spendAssetsHandleType_","type":"uint8"},{"internalType":"address[]","name":"spendAssets_","type":"address[]"},{"internalType":"uint256[]","name":"spendAssetAmounts_","type":"uint256[]"},{"internalType":"address[]","name":"incomingAssets_","type":"address[]"},{"internalType":"uint256[]","name":"minIncomingAssetAmounts_","type":"uint256[]"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"_vaultProxy","type":"address"},{"internalType":"bytes","name":"_encodedCallArgs","type":"bytes"},{"internalType":"bytes","name":"","type":"bytes"}],"name":"takeOrder","outputs":[],"stateMutability":"nonpayable","type":"function"}]

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000000000000000000000000965ca477106476b4600562a2ebe13536581883a60000000000000000000000001bd435f3c054b6e901b7b108a0ab7617c808677b000000000000000000000000b70bc06d2c9bf03b3373799606dc7d39346c06b3

-----Decoded View---------------
Arg [0] : _integrationManager (address): 0x965ca477106476B4600562a2eBe13536581883A6
Arg [1] : _augustusSwapper (address): 0x1bD435F3C054b6e901B7b108a0ab7617C808677b
Arg [2] : _tokenTransferProxy (address): 0xb70Bc06D2c9Bf03b3373799606dc7d39346c06B3

-----Encoded View---------------
3 Constructor Arguments found :
Arg [0] : 000000000000000000000000965ca477106476b4600562a2ebe13536581883a6
Arg [1] : 0000000000000000000000001bd435f3c054b6e901b7b108a0ab7617c808677b
Arg [2] : 000000000000000000000000b70bc06d2c9bf03b3373799606dc7d39346c06b3