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// SPDX-License-Identifier: MIT
pragma solidity 0.8.20;

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

import {ILpETH, IERC20} from "./interfaces/ILpETH.sol";
import {ILpETHVault} from "./interfaces/ILpETHVault.sol";
import {IWETH} from "./interfaces/IWETH.sol";

/**
 * @title   PrelaunchPoints
 * @author  Loop
 * @notice  Staking points contract for the prelaunch of Loop Protocol.
 */
contract PrelaunchPoints {
    using Math for uint256;
    using SafeERC20 for IERC20;
    using SafeERC20 for ILpETH;

    /*//////////////////////////////////////////////////////////////
                                STORAGE
    //////////////////////////////////////////////////////////////*/

    ILpETH public lpETH;
    ILpETHVault public lpETHVault;
    IWETH public immutable WETH;
    address public constant ETH = 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE;
    address public immutable exchangeProxy;

    address public owner;
    address public proposedOwner;

    uint256 public totalSupply;
    uint256 public totalLpETH;
    mapping(address => bool) public isTokenAllowed;

    enum Exchange {
        UniswapV3,
        TransformERC20
    }

    bytes4 public constant UNI_SELECTOR = 0x803ba26d;
    bytes4 public constant TRANSFORM_SELECTOR = 0x415565b0;

    uint32 public loopActivation;
    uint32 public startClaimDate;
    uint32 public constant TIMELOCK = 7 days;
    bool public emergencyMode;

    mapping(address => mapping(address => uint256)) public balances; // User -> Token -> Balance

    /*//////////////////////////////////////////////////////////////
                                 EVENTS
    //////////////////////////////////////////////////////////////*/

    event Locked(address indexed user, uint256 amount, address indexed token, bytes32 indexed referral);
    event StakedVault(address indexed user, uint256 amount, uint256 typeIndex);
    event Converted(uint256 amountETH, uint256 amountlpETH);
    event Withdrawn(address indexed user, address indexed token, uint256 amount);
    event Claimed(address indexed user, address indexed token, uint256 reward);
    event Recovered(address token, uint256 amount);
    event OwnerProposed(address newOwner);
    event OwnerUpdated(address newOwner);
    event LoopAddressesUpdated(address loopAddress, address vaultAddress);
    event SwappedTokens(address sellToken, uint256 sellAmount, uint256 buyETHAmount);

    /*//////////////////////////////////////////////////////////////
                                 ERRORS
    //////////////////////////////////////////////////////////////*/

    error InvalidToken();
    error NothingToClaim();
    error TokenNotAllowed();
    error CannotLockZero();
    error CannotClaimZero();
    error CannotWithdrawZero();
    error UseClaimInstead();
    error FailedToSendEther();
    error SellTokenApprovalFailed();
    error SwapCallFailed();
    error WrongSelector(bytes4 selector);
    error WrongDataTokens(address inputToken, address outputToken);
    error WrongDataAmount(uint256 inputTokenAmount);
    error WrongRecipient(address recipient);
    error WrongExchange();
    error LoopNotActivated();
    error NotValidToken();
    error NotAuthorized();
    error NotProposedOwner();
    error CurrentlyNotPossible();
    error NoLongerPossible();
    error ReceiveDisabled();

    /*//////////////////////////////////////////////////////////////
                             INITIALIZATION
    //////////////////////////////////////////////////////////////*/
    /**
     * @param _exchangeProxy address of the 0x protocol exchange proxy
     * @param _allowedTokens list of token addresses to allow for locking
     */
    constructor(address _exchangeProxy, address _wethAddress, address[] memory _allowedTokens) {
        owner = msg.sender;
        exchangeProxy = _exchangeProxy;
        WETH = IWETH(_wethAddress);

        loopActivation = uint32(block.timestamp + 120 days);
        startClaimDate = 4294967295; // Max uint32 ~ year 2107

        // Allow intital list of tokens
        uint256 length = _allowedTokens.length;
        for (uint256 i = 0; i < length;) {
            isTokenAllowed[_allowedTokens[i]] = true;
            unchecked {
                i++;
            }
        }
        isTokenAllowed[_wethAddress] = true;
    }

    /*//////////////////////////////////////////////////////////////
                            STAKE FUNCTIONS
    //////////////////////////////////////////////////////////////*/

    /**
     * @notice Locks ETH
     * @param _referral  info of the referral. This value will be processed in the backend.
     */
    function lockETH(bytes32 _referral) external payable {
        _processLock(ETH, msg.value, msg.sender, _referral);
    }

    /**
     * @notice Locks ETH for a given address
     * @param _for       address for which ETH is locked
     * @param _referral  info of the referral. This value will be processed in the backend.
     */
    function lockETHFor(address _for, bytes32 _referral) external payable {
        _processLock(ETH, msg.value, _for, _referral);
    }

    /**
     * @notice Locks a valid token
     * @param _token     address of token to lock
     * @param _amount    amount of token to lock
     * @param _referral  info of the referral. This value will be processed in the backend.
     */
    function lock(address _token, uint256 _amount, bytes32 _referral) external {
        if (_token == ETH) {
            revert InvalidToken();
        }
        _processLock(_token, _amount, msg.sender, _referral);
    }

    /**
     * @notice Locks a valid token for a given address
     * @param _token     address of token to lock
     * @param _amount    amount of token to lock
     * @param _for       address for which ETH is locked
     * @param _referral  info of the referral. This value will be processed in the backend.
     */
    function lockFor(address _token, uint256 _amount, address _for, bytes32 _referral) external {
        if (_token == ETH) {
            revert InvalidToken();
        }
        _processLock(_token, _amount, _for, _referral);
    }

    /**
     * @dev Generic internal locking function that updates rewards based on
     *      previous balances, then update balances.
     * @param _token       Address of the token to lock
     * @param _amount      Units of ETH or token to add to the users balance
     * @param _receiver    Address of user who will receive the stake
     * @param _referral    Address of the referral user
     */
    function _processLock(address _token, uint256 _amount, address _receiver, bytes32 _referral)
        internal
        onlyBeforeDate(startClaimDate)
    {
        if (_amount == 0) {
            revert CannotLockZero();
        }
        if (_token == ETH) {
            WETH.deposit{value: _amount}();
            totalSupply += _amount;
            balances[_receiver][address(WETH)] += _amount;
        } else {
            if (!isTokenAllowed[_token]) {
                revert TokenNotAllowed();
            }
            IERC20(_token).safeTransferFrom(msg.sender, address(this), _amount);

            if (_token == address(WETH)) {
                totalSupply += _amount;
            } 
            balances[_receiver][_token] += _amount;
        }

        emit Locked(_receiver, _amount, _token, _referral);
    }

    /*//////////////////////////////////////////////////////////////
                        CLAIM AND WITHDRAW FUNCTIONS
    //////////////////////////////////////////////////////////////*/

    /**
     * @dev Called by a user to get their vested lpETH
     * @param _token      Address of the token to convert to lpETH
     * @param _percentage Proportion in % of tokens to withdraw. NOT useful for ETH
     * @param _exchange   Exchange identifier where the swap takes place
     * @param _data       Swap data obtained from 0x API
     */
    function claim(address _token, uint8 _percentage, Exchange _exchange, bytes calldata _data)
        external
        onlyAfterDate(startClaimDate)
    {
        _claim(_token, msg.sender, _percentage, _exchange, _data);
    }

    /**
     * @dev Called by a user to get their vested lpETH and stake them in a
     *      Loop vault for extra rewards
     * @param _token      Address of the token to convert to lpETH
     * @param _percentage Proportion in % of tokens to withdraw. NOT useful for ETH
     * @param _exchange   Exchange identifier where the swap takes place
     * @param _typeIndex  lock type index determining lock period and rewards multiplier.
     * @param _data       Swap data obtained from 0x API
     */
    function claimAndStake(address _token, uint8 _percentage, Exchange _exchange, uint256 _typeIndex, bytes calldata _data)
        external
        onlyAfterDate(startClaimDate)
    {
        uint256 claimedAmount = _claim(_token, address(this), _percentage, _exchange, _data);
        lpETH.approve(address(lpETHVault), claimedAmount);
        lpETHVault.stake(claimedAmount, msg.sender, _typeIndex);

        emit StakedVault(msg.sender, claimedAmount, _typeIndex);
    }

    /**
     * @dev Claim logic. If necessary converts token to ETH before depositing into lpETH contract.
     */
    function _claim(address _token, address _receiver, uint8 _percentage, Exchange _exchange, bytes calldata _data)
        internal
        returns (uint256 claimedAmount)
    {
        if (_percentage == 0) {
            revert CannotClaimZero();
        }
        uint256 userStake = balances[msg.sender][_token];
        if (userStake == 0) {
            revert NothingToClaim();
        }
        if (_token == address(WETH)) {
            claimedAmount = userStake.mulDiv(totalLpETH, totalSupply);
            balances[msg.sender][_token] = 0;
            if (_receiver != address(this)){
                lpETH.safeTransfer(_receiver, claimedAmount);
            }  
        } else {
            uint256 userClaim = userStake * _percentage / 100;
            _validateData(_token, userClaim, _exchange, _data);
            balances[msg.sender][_token] = userStake - userClaim;
            uint256 balanceWethBefore = WETH.balanceOf(address(this));

            // Swap token to ETH
            _fillQuote(IERC20(_token), userClaim, _data);

            // Convert swapped ETH to lpETH (1 to 1 conversion)
            claimedAmount = WETH.balanceOf(address(this)) - balanceWethBefore;
            WETH.approve(address(lpETH), claimedAmount);
            lpETH.deposit(claimedAmount, _receiver);
        }
        emit Claimed(msg.sender, _token, claimedAmount);
    }

    /**
     * @dev Called by a staker to withdraw all their ETH or LRT
     * Note Can only be called before claiming lpETH has started.
     * In emergency mode can be called at any time.
     * @param _token      Address of the token to withdraw
     */
    function withdraw(address _token) external {
        if (!emergencyMode) {
            if (block.timestamp >= startClaimDate) {
                revert NoLongerPossible();
            }
        }

        uint256 lockedAmount = balances[msg.sender][_token];
        balances[msg.sender][_token] = 0;

        if (lockedAmount == 0) {
            revert CannotWithdrawZero();
        }
        if (_token == address(WETH)) {
            if (block.timestamp >= startClaimDate){
                revert UseClaimInstead();
            }
            totalSupply -= lockedAmount;
        }
        IERC20(_token).safeTransfer(msg.sender, lockedAmount);

        emit Withdrawn(msg.sender, _token, lockedAmount);
    }

    /*//////////////////////////////////////////////////////////////
                            PROTECTED FUNCTIONS
    //////////////////////////////////////////////////////////////*/
    /**
     * @dev Called by a owner to convert all the locked ETH to get lpETH
     */
    function convertAllETH() external onlyAuthorized onlyBeforeDate(startClaimDate) {
        if (block.timestamp - loopActivation <= TIMELOCK) {
            revert LoopNotActivated();
        }

        // deposits all the WETH to lpETH contract. Receives lpETH back
        WETH.approve(address(lpETH), totalSupply);
        lpETH.deposit(totalSupply, address(this));

        // If there is extra lpETH (sent by external actor) then it is distributed amoung all users
        totalLpETH = lpETH.balanceOf(address(this));

        // Claims of lpETH can start immediately after conversion.
        startClaimDate = uint32(block.timestamp);

        emit Converted(totalSupply, totalLpETH);
    }

    /**
     * @notice Sets a new proposedOwner
     * @param _owner address of the new owner
     */
    function proposeOwner(address _owner) external onlyAuthorized {
        proposedOwner = _owner;

        emit OwnerProposed(_owner);
    }

    /**
     * @notice Proposed owner accepts the ownership. 
     * Can only be called by current proposed owner.
     */
    function acceptOwnership() external {
        if (msg.sender != proposedOwner) {
            revert NotProposedOwner();
        }
        owner = proposedOwner;
        emit OwnerUpdated(owner);
    }

    /**
     * @notice Sets the lpETH contract address
     * @param _loopAddress address of the lpETH contract
     * @dev Can only be set once before 120 days have passed from deployment.
     *      After that users can only withdraw ETH.
     */
    function setLoopAddresses(address _loopAddress, address _vaultAddress)
        external
        onlyAuthorized
        onlyBeforeDate(loopActivation)
    {
        lpETH = ILpETH(_loopAddress);
        lpETHVault = ILpETHVault(_vaultAddress);
        loopActivation = uint32(block.timestamp);

        emit LoopAddressesUpdated(_loopAddress, _vaultAddress);
    }

    /**
     * @param _token address of a wrapped LRT token
     * @dev ONLY add wrapped LRT tokens. Contract not compatible with rebase tokens.
     */
    function allowToken(address _token) external onlyAuthorized {
        isTokenAllowed[_token] = true;
    }

    /**
     * @param _mode boolean to activate/deactivate the emergency mode
     * @dev On emergency mode all withdrawals are accepted at
     */
    function setEmergencyMode(bool _mode) external onlyAuthorized {
        emergencyMode = _mode;
    }

    /**
     * @dev Allows the owner to recover other ERC20s mistakingly sent to this contract
     */
    function recoverERC20(address tokenAddress, uint256 tokenAmount) external onlyAuthorized {
        if (tokenAddress == address(lpETH) || isTokenAllowed[tokenAddress]) {
            revert NotValidToken();
        }
        IERC20(tokenAddress).safeTransfer(owner, tokenAmount);

        emit Recovered(tokenAddress, tokenAmount);
    }

    /**
     * Disable receive ETH
     */
    receive() external payable {
        revert ReceiveDisabled();
    }

    /*//////////////////////////////////////////////////////////////
                            INTERNAL FUNCTIONS
    //////////////////////////////////////////////////////////////*/
    /**
     * @notice Validates the data sent from 0x API to match desired behaviour
     * @param _token     address of the token to sell
     * @param _amount    amount of token to sell
     * @param _exchange  exchange identifier where the swap takes place
     * @param _data      swap data from 0x API
     */
    function _validateData(address _token, uint256 _amount, Exchange _exchange, bytes calldata _data) internal view {
        address inputToken;
        address outputToken;
        uint256 inputTokenAmount;
        address recipient;
        bytes4 selector;

        if (_exchange == Exchange.UniswapV3) {
            (inputToken, outputToken, inputTokenAmount, recipient, selector) = _decodeUniswapV3Data(_data);
            if (selector != UNI_SELECTOR) {
                revert WrongSelector(selector);
            }
            // UniswapV3Feature.sellTokenForEthToUniswapV3(encodedPath, sellAmount, minBuyAmount, recipient) requires `encodedPath` to be a Uniswap-encoded path, where the last token is WETH
            if (outputToken != address(WETH)) {
                revert WrongDataTokens(inputToken, outputToken);
            }
            if (recipient != address(this)) {
            revert WrongRecipient(recipient);
        }
        } else if (_exchange == Exchange.TransformERC20) {
            (inputToken, outputToken, inputTokenAmount, selector) = _decodeTransformERC20Data(_data);
            if (selector != TRANSFORM_SELECTOR) {
                revert WrongSelector(selector);
            }
            if (outputToken != address(WETH)) {
                revert WrongDataTokens(inputToken, outputToken);
            }
        } else {
            revert WrongExchange();
        }

        if (inputToken != _token) {
            revert WrongDataTokens(inputToken, outputToken);
        }
        if (inputTokenAmount != _amount) {
            revert WrongDataAmount(inputTokenAmount);
        }
        
    }

    /**
     * @notice Decodes the data sent from 0x API when UniswapV3 is used
     * @param _data      swap data from 0x API
     */
    function _decodeUniswapV3Data(bytes calldata _data)
        internal
        pure
        returns (address inputToken, address outputToken, uint256 inputTokenAmount, address recipient, bytes4 selector)
    {
        uint256 encodedPathLength;
        assembly {
            let p := _data.offset
            selector := calldataload(p)
            p := add(p, 36) // Data: selector 4 + lenght data 32
            inputTokenAmount := calldataload(p)
            recipient := calldataload(add(p, 64))
            encodedPathLength := calldataload(add(p, 96)) // Get length of encodedPath (obtained through abi.encodePacked)
            inputToken := shr(96, calldataload(add(p, 128))) // Shift to the Right with 24 zeroes (12 bytes = 96 bits) to get address
            outputToken := shr(96, calldataload(add(p, add(encodedPathLength, 108)))) // Get last address of the hop
        }
    }

    /**
     * @notice Decodes the data sent from 0x API when other exchanges are used via 0x TransformERC20 function
     * @param _data      swap data from 0x API
     */
    function _decodeTransformERC20Data(bytes calldata _data)
        internal
        pure
        returns (address inputToken, address outputToken, uint256 inputTokenAmount, bytes4 selector)
    {
        assembly {
            let p := _data.offset
            selector := calldataload(p)
            inputToken := calldataload(add(p, 4)) // Read slot, selector 4 bytes
            outputToken := calldataload(add(p, 36)) // Read slot
            inputTokenAmount := calldataload(add(p, 68)) // Read slot
        }
    }

    /**
     *
     * @param _sellToken     The `sellTokenAddress` field from the API response.
     * @param _amount       The `sellAmount` field from the API response.
     * @param _swapCallData  The `data` field from the API response.
     */

    function _fillQuote(IERC20 _sellToken, uint256 _amount, bytes calldata _swapCallData) internal {
        // Track our balance of the buyToken to determine how much we've bought.
        uint256 boughtWETHAmount = WETH.balanceOf(address(this));

        if (!_sellToken.approve(exchangeProxy, _amount)) {
            revert SellTokenApprovalFailed();
        }

        (bool success,) = payable(exchangeProxy).call{value: 0}(_swapCallData);

        if (!success) {
            revert SwapCallFailed();
        }

        // Use our current buyToken balance to determine how much we've bought.
        boughtWETHAmount = WETH.balanceOf(address(this)) - boughtWETHAmount;
        emit SwappedTokens(address(_sellToken), _amount, boughtWETHAmount);
    }

    /*//////////////////////////////////////////////////////////////
                                MODIFIERS
    //////////////////////////////////////////////////////////////*/

    modifier onlyAuthorized() {
        if (msg.sender != owner) {
            revert NotAuthorized();
        }
        _;
    }

    modifier onlyAfterDate(uint256 limitDate) {
        if (block.timestamp <= limitDate) {
            revert CurrentlyNotPossible();
        }
        _;
    }

    modifier onlyBeforeDate(uint256 limitDate) {
        if (block.timestamp >= limitDate) {
            revert NoLongerPossible();
        }
        _;
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (token/ERC20/utils/SafeERC20.sol)

pragma solidity ^0.8.20;

import {IERC20} from "../IERC20.sol";
import {IERC20Permit} from "../extensions/IERC20Permit.sol";
import {Address} from "../../../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 Address for address;

    /**
     * @dev An operation with an ERC20 token failed.
     */
    error SafeERC20FailedOperation(address token);

    /**
     * @dev Indicates a failed `decreaseAllowance` request.
     */
    error SafeERC20FailedDecreaseAllowance(address spender, uint256 currentAllowance, uint256 requestedDecrease);

    /**
     * @dev Transfer `value` amount of `token` from the calling contract to `to`. If `token` returns no value,
     * non-reverting calls are assumed to be successful.
     */
    function safeTransfer(IERC20 token, address to, uint256 value) internal {
        _callOptionalReturn(token, abi.encodeCall(token.transfer, (to, value)));
    }

    /**
     * @dev Transfer `value` amount of `token` from `from` to `to`, spending the approval given by `from` to the
     * calling contract. If `token` returns no value, non-reverting calls are assumed to be successful.
     */
    function safeTransferFrom(IERC20 token, address from, address to, uint256 value) internal {
        _callOptionalReturn(token, abi.encodeCall(token.transferFrom, (from, to, value)));
    }

    /**
     * @dev Increase the calling contract's allowance toward `spender` by `value`. If `token` returns no value,
     * non-reverting calls are assumed to be successful.
     */
    function safeIncreaseAllowance(IERC20 token, address spender, uint256 value) internal {
        uint256 oldAllowance = token.allowance(address(this), spender);
        forceApprove(token, spender, oldAllowance + value);
    }

    /**
     * @dev Decrease the calling contract's allowance toward `spender` by `requestedDecrease`. If `token` returns no
     * value, non-reverting calls are assumed to be successful.
     */
    function safeDecreaseAllowance(IERC20 token, address spender, uint256 requestedDecrease) internal {
        unchecked {
            uint256 currentAllowance = token.allowance(address(this), spender);
            if (currentAllowance < requestedDecrease) {
                revert SafeERC20FailedDecreaseAllowance(spender, currentAllowance, requestedDecrease);
            }
            forceApprove(token, spender, currentAllowance - requestedDecrease);
        }
    }

    /**
     * @dev Set the calling contract's allowance toward `spender` to `value`. If `token` returns no value,
     * non-reverting calls are assumed to be successful. Meant to be used with tokens that require the approval
     * to be set to zero before setting it to a non-zero value, such as USDT.
     */
    function forceApprove(IERC20 token, address spender, uint256 value) internal {
        bytes memory approvalCall = abi.encodeCall(token.approve, (spender, value));

        if (!_callOptionalReturnBool(token, approvalCall)) {
            _callOptionalReturn(token, abi.encodeCall(token.approve, (spender, 0)));
            _callOptionalReturn(token, approvalCall);
        }
    }

    /**
     * @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);
        if (returndata.length != 0 && !abi.decode(returndata, (bool))) {
            revert SafeERC20FailedOperation(address(token));
        }
    }

    /**
     * @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).
     *
     * This is a variant of {_callOptionalReturn} that silents catches all reverts and returns a bool instead.
     */
    function _callOptionalReturnBool(IERC20 token, bytes memory data) private returns (bool) {
        // 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 cannot use {Address-functionCall} here since this should return false
        // and not revert is the subcall reverts.

        (bool success, bytes memory returndata) = address(token).call(data);
        return success && (returndata.length == 0 || abi.decode(returndata, (bool))) && address(token).code.length > 0;
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (utils/math/Math.sol)

pragma solidity ^0.8.20;

/**
 * @dev Standard math utilities missing in the Solidity language.
 */
library Math {
    /**
     * @dev Muldiv operation overflow.
     */
    error MathOverflowedMulDiv();

    enum Rounding {
        Floor, // Toward negative infinity
        Ceil, // Toward positive infinity
        Trunc, // Toward zero
        Expand // Away from zero
    }

    /**
     * @dev Returns the addition of two unsigned integers, with an overflow flag.
     */
    function tryAdd(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        unchecked {
            uint256 c = a + b;
            if (c < a) return (false, 0);
            return (true, c);
        }
    }

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

    /**
     * @dev Returns the multiplication of two unsigned integers, with an overflow flag.
     */
    function tryMul(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        unchecked {
            // 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.
     */
    function tryDiv(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        unchecked {
            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.
     */
    function tryMod(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        unchecked {
            if (b == 0) return (false, 0);
            return (true, a % b);
        }
    }

    /**
     * @dev Returns the largest of two numbers.
     */
    function max(uint256 a, uint256 b) internal pure returns (uint256) {
        return a > b ? a : b;
    }

    /**
     * @dev Returns the smallest of two numbers.
     */
    function min(uint256 a, uint256 b) internal pure returns (uint256) {
        return a < b ? a : b;
    }

    /**
     * @dev Returns the average of two numbers. The result is rounded towards
     * zero.
     */
    function average(uint256 a, uint256 b) internal pure returns (uint256) {
        // (a + b) / 2 can overflow.
        return (a & b) + (a ^ b) / 2;
    }

    /**
     * @dev Returns the ceiling of the division of two numbers.
     *
     * This differs from standard division with `/` in that it rounds towards infinity instead
     * of rounding towards zero.
     */
    function ceilDiv(uint256 a, uint256 b) internal pure returns (uint256) {
        if (b == 0) {
            // Guarantee the same behavior as in a regular Solidity division.
            return a / b;
        }

        // (a + b - 1) / b can overflow on addition, so we distribute.
        return a == 0 ? 0 : (a - 1) / b + 1;
    }

    /**
     * @notice Calculates floor(x * y / denominator) with full precision. Throws if result overflows a uint256 or
     * denominator == 0.
     * @dev Original credit to Remco Bloemen under MIT license (https://xn--2-umb.com/21/muldiv) with further edits by
     * Uniswap Labs also under MIT license.
     */
    function mulDiv(uint256 x, uint256 y, uint256 denominator) internal pure returns (uint256 result) {
        unchecked {
            // 512-bit multiply [prod1 prod0] = x * y. Compute the product mod 2^256 and mod 2^256 - 1, then use
            // use the Chinese Remainder Theorem to reconstruct the 512 bit result. The result is stored in two 256
            // variables such that product = prod1 * 2^256 + prod0.
            uint256 prod0 = x * y; // Least significant 256 bits of the product
            uint256 prod1; // Most significant 256 bits of the product
            assembly {
                let mm := mulmod(x, y, not(0))
                prod1 := sub(sub(mm, prod0), lt(mm, prod0))
            }

            // Handle non-overflow cases, 256 by 256 division.
            if (prod1 == 0) {
                // Solidity will revert if denominator == 0, unlike the div opcode on its own.
                // The surrounding unchecked block does not change this fact.
                // See https://docs.soliditylang.org/en/latest/control-structures.html#checked-or-unchecked-arithmetic.
                return prod0 / denominator;
            }

            // Make sure the result is less than 2^256. Also prevents denominator == 0.
            if (denominator <= prod1) {
                revert MathOverflowedMulDiv();
            }

            ///////////////////////////////////////////////
            // 512 by 256 division.
            ///////////////////////////////////////////////

            // Make division exact by subtracting the remainder from [prod1 prod0].
            uint256 remainder;
            assembly {
                // Compute remainder using mulmod.
                remainder := mulmod(x, y, denominator)

                // Subtract 256 bit number from 512 bit number.
                prod1 := sub(prod1, gt(remainder, prod0))
                prod0 := sub(prod0, remainder)
            }

            // Factor powers of two out of denominator and compute largest power of two divisor of denominator.
            // Always >= 1. See https://cs.stackexchange.com/q/138556/92363.

            uint256 twos = denominator & (0 - denominator);
            assembly {
                // Divide denominator by twos.
                denominator := div(denominator, twos)

                // Divide [prod1 prod0] by twos.
                prod0 := div(prod0, twos)

                // Flip twos such that it is 2^256 / twos. If twos is zero, then it becomes one.
                twos := add(div(sub(0, twos), twos), 1)
            }

            // Shift in bits from prod1 into prod0.
            prod0 |= prod1 * twos;

            // Invert denominator mod 2^256. Now that denominator is an odd number, it has an inverse modulo 2^256 such
            // that denominator * inv = 1 mod 2^256. Compute the inverse by starting with a seed that is correct for
            // four bits. That is, denominator * inv = 1 mod 2^4.
            uint256 inverse = (3 * denominator) ^ 2;

            // Use the Newton-Raphson iteration to improve the precision. Thanks to Hensel's lifting lemma, this also
            // works in modular arithmetic, doubling the correct bits in each step.
            inverse *= 2 - denominator * inverse; // inverse mod 2^8
            inverse *= 2 - denominator * inverse; // inverse mod 2^16
            inverse *= 2 - denominator * inverse; // inverse mod 2^32
            inverse *= 2 - denominator * inverse; // inverse mod 2^64
            inverse *= 2 - denominator * inverse; // inverse mod 2^128
            inverse *= 2 - denominator * inverse; // inverse mod 2^256

            // Because the division is now exact we can divide by multiplying with the modular inverse of denominator.
            // This will give us the correct result modulo 2^256. Since the preconditions guarantee that the outcome is
            // less than 2^256, this is the final result. We don't need to compute the high bits of the result and prod1
            // is no longer required.
            result = prod0 * inverse;
            return result;
        }
    }

    /**
     * @notice Calculates x * y / denominator with full precision, following the selected rounding direction.
     */
    function mulDiv(uint256 x, uint256 y, uint256 denominator, Rounding rounding) internal pure returns (uint256) {
        uint256 result = mulDiv(x, y, denominator);
        if (unsignedRoundsUp(rounding) && mulmod(x, y, denominator) > 0) {
            result += 1;
        }
        return result;
    }

    /**
     * @dev Returns the square root of a number. If the number is not a perfect square, the value is rounded
     * towards zero.
     *
     * Inspired by Henry S. Warren, Jr.'s "Hacker's Delight" (Chapter 11).
     */
    function sqrt(uint256 a) internal pure returns (uint256) {
        if (a == 0) {
            return 0;
        }

        // For our first guess, we get the biggest power of 2 which is smaller than the square root of the target.
        //
        // We know that the "msb" (most significant bit) of our target number `a` is a power of 2 such that we have
        // `msb(a) <= a < 2*msb(a)`. This value can be written `msb(a)=2**k` with `k=log2(a)`.
        //
        // This can be rewritten `2**log2(a) <= a < 2**(log2(a) + 1)`
        // → `sqrt(2**k) <= sqrt(a) < sqrt(2**(k+1))`
        // → `2**(k/2) <= sqrt(a) < 2**((k+1)/2) <= 2**(k/2 + 1)`
        //
        // Consequently, `2**(log2(a) / 2)` is a good first approximation of `sqrt(a)` with at least 1 correct bit.
        uint256 result = 1 << (log2(a) >> 1);

        // At this point `result` is an estimation with one bit of precision. We know the true value is a uint128,
        // since it is the square root of a uint256. Newton's method converges quadratically (precision doubles at
        // every iteration). We thus need at most 7 iteration to turn our partial result with one bit of precision
        // into the expected uint128 result.
        unchecked {
            result = (result + a / result) >> 1;
            result = (result + a / result) >> 1;
            result = (result + a / result) >> 1;
            result = (result + a / result) >> 1;
            result = (result + a / result) >> 1;
            result = (result + a / result) >> 1;
            result = (result + a / result) >> 1;
            return min(result, a / result);
        }
    }

    /**
     * @notice Calculates sqrt(a), following the selected rounding direction.
     */
    function sqrt(uint256 a, Rounding rounding) internal pure returns (uint256) {
        unchecked {
            uint256 result = sqrt(a);
            return result + (unsignedRoundsUp(rounding) && result * result < a ? 1 : 0);
        }
    }

    /**
     * @dev Return the log in base 2 of a positive value rounded towards zero.
     * Returns 0 if given 0.
     */
    function log2(uint256 value) internal pure returns (uint256) {
        uint256 result = 0;
        unchecked {
            if (value >> 128 > 0) {
                value >>= 128;
                result += 128;
            }
            if (value >> 64 > 0) {
                value >>= 64;
                result += 64;
            }
            if (value >> 32 > 0) {
                value >>= 32;
                result += 32;
            }
            if (value >> 16 > 0) {
                value >>= 16;
                result += 16;
            }
            if (value >> 8 > 0) {
                value >>= 8;
                result += 8;
            }
            if (value >> 4 > 0) {
                value >>= 4;
                result += 4;
            }
            if (value >> 2 > 0) {
                value >>= 2;
                result += 2;
            }
            if (value >> 1 > 0) {
                result += 1;
            }
        }
        return result;
    }

    /**
     * @dev Return the log in base 2, following the selected rounding direction, of a positive value.
     * Returns 0 if given 0.
     */
    function log2(uint256 value, Rounding rounding) internal pure returns (uint256) {
        unchecked {
            uint256 result = log2(value);
            return result + (unsignedRoundsUp(rounding) && 1 << result < value ? 1 : 0);
        }
    }

    /**
     * @dev Return the log in base 10 of a positive value rounded towards zero.
     * Returns 0 if given 0.
     */
    function log10(uint256 value) internal pure returns (uint256) {
        uint256 result = 0;
        unchecked {
            if (value >= 10 ** 64) {
                value /= 10 ** 64;
                result += 64;
            }
            if (value >= 10 ** 32) {
                value /= 10 ** 32;
                result += 32;
            }
            if (value >= 10 ** 16) {
                value /= 10 ** 16;
                result += 16;
            }
            if (value >= 10 ** 8) {
                value /= 10 ** 8;
                result += 8;
            }
            if (value >= 10 ** 4) {
                value /= 10 ** 4;
                result += 4;
            }
            if (value >= 10 ** 2) {
                value /= 10 ** 2;
                result += 2;
            }
            if (value >= 10 ** 1) {
                result += 1;
            }
        }
        return result;
    }

    /**
     * @dev Return the log in base 10, following the selected rounding direction, of a positive value.
     * Returns 0 if given 0.
     */
    function log10(uint256 value, Rounding rounding) internal pure returns (uint256) {
        unchecked {
            uint256 result = log10(value);
            return result + (unsignedRoundsUp(rounding) && 10 ** result < value ? 1 : 0);
        }
    }

    /**
     * @dev Return the log in base 256 of a positive value rounded towards zero.
     * Returns 0 if given 0.
     *
     * Adding one to the result gives the number of pairs of hex symbols needed to represent `value` as a hex string.
     */
    function log256(uint256 value) internal pure returns (uint256) {
        uint256 result = 0;
        unchecked {
            if (value >> 128 > 0) {
                value >>= 128;
                result += 16;
            }
            if (value >> 64 > 0) {
                value >>= 64;
                result += 8;
            }
            if (value >> 32 > 0) {
                value >>= 32;
                result += 4;
            }
            if (value >> 16 > 0) {
                value >>= 16;
                result += 2;
            }
            if (value >> 8 > 0) {
                result += 1;
            }
        }
        return result;
    }

    /**
     * @dev Return the log in base 256, following the selected rounding direction, of a positive value.
     * Returns 0 if given 0.
     */
    function log256(uint256 value, Rounding rounding) internal pure returns (uint256) {
        unchecked {
            uint256 result = log256(value);
            return result + (unsignedRoundsUp(rounding) && 1 << (result << 3) < value ? 1 : 0);
        }
    }

    /**
     * @dev Returns whether a provided rounding mode is considered rounding up for unsigned integers.
     */
    function unsignedRoundsUp(Rounding rounding) internal pure returns (bool) {
        return uint8(rounding) % 2 == 1;
    }
}

// SPDX-License-Identifier: MIT
pragma solidity 0.8.20;

import "@openzeppelin/contracts/token/ERC20/IERC20.sol";

interface ILpETH is IERC20 {
    /// @notice Deposits given amount of underlying tokens to the pool in exchange for pool shares
    /// @param assets Amount of underlying to deposit
    /// @param receiver Account to mint pool shares to
    /// @return shares Number of shares minted
    function deposit(
        uint256 assets,
        address receiver
    )
    external
        returns (uint256 shares);
}

// SPDX-License-Identifier: MIT
pragma solidity 0.8.20;

import "@openzeppelin/contracts/token/ERC20/IERC20.sol";

interface ILpETHVault is IERC20 {
    /**
	 * @notice Stake tokens to receive rewards.
	 * @dev Locked tokens cannot be withdrawn for defaultLockDuration and are eligible to receive rewards.
	 * @param amount to stake.
	 * @param onBehalfOf address for staking.
	 * @param typeIndex lock type index determining lock period and rewards multiplier.
	 */
	function stake(uint256 amount, address onBehalfOf, uint256 typeIndex) external;
}

// SPDX-License-Identifier: MIT
pragma solidity >=0.5.0;

import "@openzeppelin/contracts/token/ERC20/IERC20.sol";

interface IWETH is IERC20 {
    function deposit() external payable;
    function transfer(address to, uint256 value) external returns (bool);
    function withdraw(uint256) external;
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (token/ERC20/IERC20.sol)

pragma solidity ^0.8.20;

/**
 * @dev Interface of the ERC20 standard as defined in the EIP.
 */
interface IERC20 {
    /**
     * @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);

    /**
     * @dev Returns the value of tokens in existence.
     */
    function totalSupply() external view returns (uint256);

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

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

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

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (token/ERC20/extensions/IERC20Permit.sol)

pragma solidity ^0.8.20;

/**
 * @dev Interface of the ERC20 Permit extension allowing approvals to be made via signatures, as defined in
 * https://eips.ethereum.org/EIPS/eip-2612[EIP-2612].
 *
 * Adds the {permit} method, which can be used to change an account's ERC20 allowance (see {IERC20-allowance}) by
 * presenting a message signed by the account. By not relying on {IERC20-approve}, the token holder account doesn't
 * need to send a transaction, and thus is not required to hold Ether at all.
 *
 * ==== Security Considerations
 *
 * There are two important considerations concerning the use of `permit`. The first is that a valid permit signature
 * expresses an allowance, and it should not be assumed to convey additional meaning. In particular, it should not be
 * considered as an intention to spend the allowance in any specific way. The second is that because permits have
 * built-in replay protection and can be submitted by anyone, they can be frontrun. A protocol that uses permits should
 * take this into consideration and allow a `permit` call to fail. Combining these two aspects, a pattern that may be
 * generally recommended is:
 *
 * ```solidity
 * function doThingWithPermit(..., uint256 value, uint256 deadline, uint8 v, bytes32 r, bytes32 s) public {
 *     try token.permit(msg.sender, address(this), value, deadline, v, r, s) {} catch {}
 *     doThing(..., value);
 * }
 *
 * function doThing(..., uint256 value) public {
 *     token.safeTransferFrom(msg.sender, address(this), value);
 *     ...
 * }
 * ```
 *
 * Observe that: 1) `msg.sender` is used as the owner, leaving no ambiguity as to the signer intent, and 2) the use of
 * `try/catch` allows the permit to fail and makes the code tolerant to frontrunning. (See also
 * {SafeERC20-safeTransferFrom}).
 *
 * Additionally, note that smart contract wallets (such as Argent or Safe) are not able to produce permit signatures, so
 * contracts should have entry points that don't rely on permit.
 */
interface IERC20Permit {
    /**
     * @dev Sets `value` as the allowance of `spender` over ``owner``'s tokens,
     * given ``owner``'s signed approval.
     *
     * IMPORTANT: The same issues {IERC20-approve} has related to transaction
     * ordering also apply here.
     *
     * Emits an {Approval} event.
     *
     * Requirements:
     *
     * - `spender` cannot be the zero address.
     * - `deadline` must be a timestamp in the future.
     * - `v`, `r` and `s` must be a valid `secp256k1` signature from `owner`
     * over the EIP712-formatted function arguments.
     * - the signature must use ``owner``'s current nonce (see {nonces}).
     *
     * For more information on the signature format, see the
     * https://eips.ethereum.org/EIPS/eip-2612#specification[relevant EIP
     * section].
     *
     * CAUTION: See Security Considerations above.
     */
    function permit(
        address owner,
        address spender,
        uint256 value,
        uint256 deadline,
        uint8 v,
        bytes32 r,
        bytes32 s
    ) external;

    /**
     * @dev Returns the current nonce for `owner`. This value must be
     * included whenever a signature is generated for {permit}.
     *
     * Every successful call to {permit} increases ``owner``'s nonce by one. This
     * prevents a signature from being used multiple times.
     */
    function nonces(address owner) external view returns (uint256);

    /**
     * @dev Returns the domain separator used in the encoding of the signature for {permit}, as defined by {EIP712}.
     */
    // solhint-disable-next-line func-name-mixedcase
    function DOMAIN_SEPARATOR() external view returns (bytes32);
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (utils/Address.sol)

pragma solidity ^0.8.20;

/**
 * @dev Collection of functions related to the address type
 */
library Address {
    /**
     * @dev The ETH balance of the account is not enough to perform the operation.
     */
    error AddressInsufficientBalance(address account);

    /**
     * @dev There's no code at `target` (it is not a contract).
     */
    error AddressEmptyCode(address target);

    /**
     * @dev A call to an address target failed. The target may have reverted.
     */
    error FailedInnerCall();

    /**
     * @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://consensys.net/diligence/blog/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/v0.8.20/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
     */
    function sendValue(address payable recipient, uint256 amount) internal {
        if (address(this).balance < amount) {
            revert AddressInsufficientBalance(address(this));
        }

        (bool success, ) = recipient.call{value: amount}("");
        if (!success) {
            revert FailedInnerCall();
        }
    }

    /**
     * @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 or custom error, it is bubbled
     * up by this function (like regular Solidity function calls). However, if
     * the call reverted with no returned reason, this function reverts with a
     * {FailedInnerCall} error.
     *
     * 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.
     */
    function functionCall(address target, bytes memory data) internal returns (bytes memory) {
        return functionCallWithValue(target, data, 0);
    }

    /**
     * @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`.
     */
    function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) {
        if (address(this).balance < value) {
            revert AddressInsufficientBalance(address(this));
        }
        (bool success, bytes memory returndata) = target.call{value: value}(data);
        return verifyCallResultFromTarget(target, success, returndata);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but performing a static call.
     */
    function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {
        (bool success, bytes memory returndata) = target.staticcall(data);
        return verifyCallResultFromTarget(target, success, returndata);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but performing a delegate call.
     */
    function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) {
        (bool success, bytes memory returndata) = target.delegatecall(data);
        return verifyCallResultFromTarget(target, success, returndata);
    }

    /**
     * @dev Tool to verify that a low level call to smart-contract was successful, and reverts if the target
     * was not a contract or bubbling up the revert reason (falling back to {FailedInnerCall}) in case of an
     * unsuccessful call.
     */
    function verifyCallResultFromTarget(
        address target,
        bool success,
        bytes memory returndata
    ) internal view returns (bytes memory) {
        if (!success) {
            _revert(returndata);
        } else {
            // only check if target is a contract if the call was successful and the return data is empty
            // otherwise we already know that it was a contract
            if (returndata.length == 0 && target.code.length == 0) {
                revert AddressEmptyCode(target);
            }
            return returndata;
        }
    }

    /**
     * @dev Tool to verify that a low level call was successful, and reverts if it wasn't, either by bubbling the
     * revert reason or with a default {FailedInnerCall} error.
     */
    function verifyCallResult(bool success, bytes memory returndata) internal pure returns (bytes memory) {
        if (!success) {
            _revert(returndata);
        } else {
            return returndata;
        }
    }

    /**
     * @dev Reverts with returndata if present. Otherwise reverts with {FailedInnerCall}.
     */
    function _revert(bytes memory returndata) private pure {
        // 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
            /// @solidity memory-safe-assembly
            assembly {
                let returndata_size := mload(returndata)
                revert(add(32, returndata), returndata_size)
            }
        } else {
            revert FailedInnerCall();
        }
    }
}

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    "erc4626-tests/=lib/openzeppelin-contracts/lib/erc4626-tests/",
    "openzeppelin-contracts/=lib/openzeppelin-contracts/"
  ],
  "optimizer": {
    "enabled": true,
    "runs": 100
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  "metadata": {
    "useLiteralContent": false,
    "bytecodeHash": "ipfs",
    "appendCBOR": true
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  "outputSelection": {
    "*": {
      "*": [
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  "libraries": {}
}

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000000000000000000000000def1c0ded9bec7f1a1670819833240f027b25eff000000000000000000000000c02aaa39b223fe8d0a0e5c4f27ead9083c756cc200000000000000000000000000000000000000000000000000000000000000600000000000000000000000000000000000000000000000000000000000000000

-----Decoded View---------------
Arg [0] : _exchangeProxy (address): 0xDef1C0ded9bec7F1a1670819833240f027b25EfF
Arg [1] : _wethAddress (address): 0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2
Arg [2] : _allowedTokens (address[]): 

-----Encoded View---------------
4 Constructor Arguments found :
Arg [0] : 000000000000000000000000def1c0ded9bec7f1a1670819833240f027b25eff
Arg [1] : 000000000000000000000000c02aaa39b223fe8d0a0e5c4f27ead9083c756cc2
Arg [2] : 0000000000000000000000000000000000000000000000000000000000000060
Arg [3] : 0000000000000000000000000000000000000000000000000000000000000000