VesperAdapter

{{
  "language": "Solidity",
  "sources": {
    "src/strategies/VesperAdapter.sol": {
      "content": "// SPDX-License-Identifier: MIT
pragma solidity ^0.8.23;

import "./BaseAdapter.sol";
import "../interfaces/IVesperPool.sol";
import {IERC20} from "lib/forge-std/src/interfaces/IERC20.sol";
import {IERC20 as IERC20OZ} from "@openzeppelin/contracts/token/ERC20/IERC20.sol";
import {SafeERC20} from "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol";

/**
 * @title VesperAdapter
 * @notice Adapter for integrating with Vesper Finance USDC pool
 * @dev Handles decimal conversions between USDC (6 decimals) and Vesper's internal 18 decimals
 */
contract VesperAdapter is BaseAdapter {
    using SafeERC20 for IERC20OZ;

    // USDC token address on Ethereum mainnet
    IERC20OZ public constant USDC = IERC20OZ(0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48);
    
    // Default Vesper USDC pool address
    address private constant DEFAULT_VESPER_POOL = 0x0C49066C0808Ee8c673553B7cbd99BCC9ABf113d;
    
    // Vesper pool interface
    IVesperPool public immutable vesperPool;
    
    // Decimal conversion constants
    uint256 private constant USDC_DECIMALS = 6;
    uint256 private constant VESPER_DECIMALS = 18;
    uint256 private constant DECIMAL_CONVERSION = 10 ** (VESPER_DECIMALS - USDC_DECIMALS);
    
    // Events
    event Deposit(address indexed user, uint256 amount, uint256 shares);
    event Withdraw(address indexed user, uint256 amount, uint256 shares);

    /**
     * @notice Constructor
     * @param _vesperPool Address of the Vesper pool (optional, defaults to USDC pool)
     */
    constructor(address _vesperPool) {
        vesperPool = _vesperPool == address(0) 
            ? IVesperPool(DEFAULT_VESPER_POOL) 
            : IVesperPool(_vesperPool);
            
        require(vesperPool.token() == address(USDC), "VesperAdapter: must be USDC pool");

        // Approve Vesper pool for unlimited USDC spending
        USDC.forceApprove(address(vesperPool), type(uint256).max);

        // Initialize APY tracking metrics
        _initializeMetrics();
    }

    /**
     * @notice Deposit USDC and receive shares
     * @param amount Amount of USDC to deposit (6 decimals)
     * @return sharesOut Amount of shares minted for depositor
     */
    function deposit(uint256 amount) external override updateMetricsModifier returns (uint256 sharesOut) {
        require(amount > 0, "VesperAdapter: amount must be greater than 0");
        
        // Transfer USDC from depositor
        USDC.safeTransferFrom(msg.sender, address(this), amount);
        
        // Calculate shares to mint based on current total value
        uint256 totalSharesBefore = totalShares;
        uint256 totalValueBefore = _getTotalValue();
        
        if (totalSharesBefore == 0) {
            sharesOut = amount; // First depositor 1:1
        } else {
            require(totalValueBefore > 0, "VesperAdapter: strategy value zero; deposits paused");
            sharesOut = (amount * totalSharesBefore) / totalValueBefore;
            require(sharesOut > 0, "VesperAdapter: deposit too small");
        }

        // Deposit to Vesper pool
        vesperPool.deposit(amount);
        
        // Update internal accounting
        shares[msg.sender] += sharesOut;
        totalShares += sharesOut;
        
        emit Deposit(msg.sender, amount, sharesOut);
    }

    /**
     * @notice Withdraw USDC by burning shares
     * @param amount Amount of USDC to withdraw (6 decimals)
     * @return withdrawn Amount of USDC actually withdrawn
     */
    function withdraw(uint256 amount) external override returns (uint256 withdrawn) {
        require(amount > 0, "VesperAdapter: amount must be greater than 0");
        
        uint256 userShares = shares[msg.sender];
        require(userShares > 0, "VesperAdapter: no shares to withdraw");
        
        // Calculate how many shares needed for the requested USDC amount
        uint256 totalValue = _getTotalValue();
        uint256 sharesNeeded = (amount * totalShares + totalValue - 1) / totalValue; // Round up
        
        // Ensure user has enough shares
        if (sharesNeeded > userShares) {
            sharesNeeded = userShares;
        }
        
        // Calculate actual USDC amount to withdraw
        withdrawn = (sharesNeeded * totalValue) / totalShares;
        
        // Update internal accounting first
        shares[msg.sender] -= sharesNeeded;
        totalShares -= sharesNeeded;
        
        // Calculate Vesper shares to burn
        uint256 vesperSharesNeeded = _calculateVesperSharesNeeded(withdrawn);
        
        // Withdraw from Vesper
        uint256 balanceBefore = USDC.balanceOf(address(this));
        vesperPool.withdraw(vesperSharesNeeded);
        uint256 balanceAfter = USDC.balanceOf(address(this));
        
        // Actual amount received from Vesper
        withdrawn = balanceAfter - balanceBefore;

        // Transfer USDC to user
        USDC.safeTransfer(msg.sender, withdrawn);

        emit Withdraw(msg.sender, withdrawn, sharesNeeded);
    }

    /**
     * @notice Get USDC balance for an account
     * @param account Address to check balance for
     * @return USDC balance (6 decimals)
     */
    function balanceOf(address account) external view override returns (uint256) {
        uint256 userShares = shares[account];
        if (userShares == 0) return 0;
        
        uint256 totalValue = _getTotalValue();
        return (userShares * totalValue) / totalShares;
    }

    /**
     * @notice Get current APY in basis points
     * @return Current APY (e.g., 500 = 5%)
     */
    function getCurrentAPY() external view override returns (uint256) {
        if (isAPYStale()) {
            return 0;
        }
        return calculatedAPY;
    }

    /**
     * @notice Get the total value managed by this adapter
     * @return Total USDC value (6 decimals)
     */
    function getTotalValue() external view returns (uint256) {
        return _getTotalValue();
    }

    /**
     * @notice Get the name of this strategy
     * @return Strategy name
     */
    function strategyName() external pure returns (string memory) {
        return "Vesper";
    }

    /**
     * @notice Get the current share price from Vesper
     * @return Share price in 18 decimals (BaseAdapter expects 18 decimals)
     */
    function _getCurrentSharePrice() internal view override returns (uint256) {
        // Vesper returns price in 6 decimals, convert to 18 decimals for BaseAdapter
        uint256 priceIn6Decimals = vesperPool.getPricePerShare();
        return priceIn6Decimals * DECIMAL_CONVERSION;
    }

    /**
     * @notice Calculate total value of USDC in the adapter
     * @return Total value in USDC (6 decimals)
     */
    function _getTotalValue() private view returns (uint256) {
        uint256 vUSDCBalance = vesperPool.balanceOf(address(this));
        if (vUSDCBalance == 0) return 0;
        
        // Get price per share (6 decimals)
        uint256 pricePerShare = vesperPool.getPricePerShare();
        
        // vUSDC has 18 decimals, price is in 6 decimals
        // Calculate value: (balance * price) / 1e18
        return (vUSDCBalance * pricePerShare) / 1e18;
    }

    /**
     * @notice Calculate Vesper shares needed for a USDC withdrawal amount
     * @param usdcAmount Amount of USDC to withdraw (6 decimals)
     * @return Vesper shares needed
     */
    function _calculateVesperSharesNeeded(uint256 usdcAmount) private view returns (uint256) {
        // Get current price per share (6 decimals)
        uint256 pricePerShare = vesperPool.getPricePerShare();
        
        // vUSDC has 18 decimals, price is in 6 decimals
        // Calculate shares needed: (usdcAmount * 1e18) / pricePerShare
        // Add 1 to round up and ensure we withdraw at least the requested amount
        return (usdcAmount * 1e18 + pricePerShare - 1) / pricePerShare;
    }
}"
    },
    "src/strategies/BaseAdapter.sol": {
      "content": "// SPDX-License-Identifier: MIT
pragma solidity ^0.8.23;

import "../interfaces/IStrategyAdapter.sol";

/**
 * @title BaseAdapter
 * @notice Abstract base contract for strategy adapters with APY tracking
 * @dev All strategy adapters should inherit from this contract
 */
abstract contract BaseAdapter is IStrategyAdapter {
    // APY tracking state
    uint256 internal lastSharePrice;
    uint256 internal lastUpdateTime;
    uint256 internal calculatedAPY;
    uint256 internal constant APY_PRECISION = 10000; // 100.00%
    uint256 internal constant MIN_UPDATE_INTERVAL = 1 hours;
    uint256 internal constant STALE_APY_THRESHOLD = 24 hours;
    
    // Share tracking
    mapping(address => uint256) internal shares;
    uint256 internal totalShares;
    
    // Events
    event MetricsUpdated(address indexed updater, uint256 newAPY, uint256 sharePrice);
    
    /**
     * @dev Must be implemented by each adapter to return current share price
     * @return Current price of 1 share in underlying assets (scaled by 1e18)
     */
    function _getCurrentSharePrice() internal view virtual returns (uint256);
    
    /**
     * @notice Update APY metrics based on share price changes
     * @dev Can be called by anyone after MIN_UPDATE_INTERVAL has passed
     */
    function updateMetrics() external virtual override {
        require(block.timestamp >= lastUpdateTime + MIN_UPDATE_INTERVAL, "BaseAdapter: Too soon to update");
        
        uint256 currentSharePrice = _getCurrentSharePrice();
        
        if (lastUpdateTime > 0 && lastSharePrice > 0 && currentSharePrice > lastSharePrice) {
            // Calculate time-weighted APY
            uint256 timeElapsed = block.timestamp - lastUpdateTime;
            
            // Calculate price change with precision
            // Formula: ((currentPrice - lastPrice) / lastPrice) * APY_PRECISION
            uint256 priceChangeRatio = ((currentSharePrice - lastSharePrice) * APY_PRECISION * 1e18) / lastSharePrice;
            
            // Annualize the return
            // Formula: (priceChangeRatio * SECONDS_PER_YEAR) / (timeElapsed * 1e18)
            calculatedAPY = (priceChangeRatio * 365 days) / (timeElapsed * 1e18);
        }
        
        lastSharePrice = currentSharePrice;
        lastUpdateTime = block.timestamp;
        
        emit MetricsUpdated(msg.sender, calculatedAPY, currentSharePrice);
    }
    
    /**
     * @notice Get the current APY
     * @dev Returns 0 if APY is stale (not updated in 24 hours)
     * @return Current APY in basis points
     */
    function getCurrentAPY() external view virtual override returns (uint256) {
        if (isAPYStale()) {
            return 0; // Return 0 for stale APY
        }
        return calculatedAPY;
    }
    
    /**
     * @notice Get the last time metrics were updated
     * @return Timestamp of last update
     */
    function getLastUpdateTime() external view override returns (uint256) {
        return lastUpdateTime;
    }
    
    /**
     * @notice Check if APY data is stale
     * @return True if last update was more than 24 hours ago
     */
    function isAPYStale() public view override returns (bool) {
        return block.timestamp > lastUpdateTime + STALE_APY_THRESHOLD;
    }
    
    /**
     * @dev Initialize metrics on deployment
     * Should be called in the constructor of inheriting contracts
     */
    function _initializeMetrics() internal {
        uint256 initialPrice = _getCurrentSharePrice();
        if (initialPrice > 0) {
            lastSharePrice = initialPrice;
            lastUpdateTime = block.timestamp;
        }
        calculatedAPY = 0; // Will be set on first update
    }
    
    /**
     * @notice Get shares held by an account
     * @param account Address to check
     * @return Number of shares
     */
    function sharesOf(address account) external view returns (uint256) {
        return shares[account];
    }
    
    /**
     * @notice Get total shares minted
     * @return Total number of shares
     */
    function getTotalShares() external view returns (uint256) {
        return totalShares;
    }
    
    /**
     * @notice Get current share price
     * @return Price of 1 share in underlying assets (scaled by 1e18)
     */
    function sharePrice() external view returns (uint256) {
        return _getCurrentSharePrice();
    }
    
    /**
     * @dev Modifier to update metrics if needed before user interactions
     */
    modifier updateMetricsModifier() {
        if (block.timestamp >= lastUpdateTime + MIN_UPDATE_INTERVAL) {
            uint256 currentSharePrice = _getCurrentSharePrice();
            
            if (lastUpdateTime > 0 && lastSharePrice > 0 && currentSharePrice > lastSharePrice) {
                uint256 timeElapsed = block.timestamp - lastUpdateTime;
                uint256 priceChangeRatio = ((currentSharePrice - lastSharePrice) * APY_PRECISION * 1e18) / lastSharePrice;
                calculatedAPY = (priceChangeRatio * 365 days) / (timeElapsed * 1e18);
            }
            
            lastSharePrice = currentSharePrice;
            lastUpdateTime = block.timestamp;
            
            emit MetricsUpdated(msg.sender, calculatedAPY, currentSharePrice);
        }
        _;
    }
}"
    },
    "src/interfaces/IVesperPool.sol": {
      "content": "// SPDX-License-Identifier: MIT
pragma solidity ^0.8.23;

/**
 * @title IVesperPool
 * @notice Interface for Vesper Finance pool contracts
 * @dev Vesper uses 18 decimals internally for all calculations
 */
interface IVesperPool {
    /**
     * @notice Deposit underlying tokens and receive pool shares
     * @param amount Amount of underlying tokens to deposit
     */
    function deposit(uint256 amount) external;

    /**
     * @notice Withdraw by burning pool shares
     * @param shares Amount of pool shares to burn
     * @dev Note: This takes share amount, not underlying amount
     */
    function withdraw(uint256 shares) external;

    /**
     * @notice Get the current price per share
     * @return Price per share in 18 decimals
     */
    function getPricePerShare() external view returns (uint256);

    /**
     * @notice Get the total value of all assets in the pool
     * @return Total value in underlying token decimals
     */
    function totalValue() external view returns (uint256);

    /**
     * @notice Get the total supply of pool shares
     * @return Total supply of shares
     */
    function totalSupply() external view returns (uint256);

    /**
     * @notice Get the balance of pool shares for an account
     * @param account Address to check balance for
     * @return Balance of pool shares
     */
    function balanceOf(address account) external view returns (uint256);

    /**
     * @notice Convert underlying amount to 18 decimals
     * @param amount Amount in underlying token decimals
     * @return Amount in 18 decimals
     */
    function convertTo18(uint256 amount) external view returns (uint256);

    /**
     * @notice Convert from 18 decimals to underlying decimals
     * @param amount Amount in 18 decimals
     * @return Amount in underlying token decimals
     */
    function convertFrom18(uint256 amount) external view returns (uint256);

    /**
     * @notice Get the underlying token address
     * @return Address of the underlying token
     */
    function token() external view returns (address);
}"
    },
    "lib/forge-std/src/interfaces/IERC20.sol": {
      "content": "// SPDX-License-Identifier: MIT
pragma solidity >=0.6.2;

/// @dev Interface of the ERC20 standard as defined in the EIP.
/// @dev This includes the optional name, symbol, and decimals metadata.
interface IERC20 {
    /// @dev Emitted when `value` tokens are moved from one account (`from`) to another (`to`).
    event Transfer(address indexed from, address indexed to, uint256 value);

    /// @dev Emitted when the allowance of a `spender` for an `owner` is set, where `value`
    /// is the new allowance.
    event Approval(address indexed owner, address indexed spender, uint256 value);

    /// @notice Returns the amount of tokens in existence.
    function totalSupply() external view returns (uint256);

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

    /// @notice Moves `amount` tokens from the caller's account to `to`.
    function transfer(address to, uint256 amount) external returns (bool);

    /// @notice Returns the remaining number of tokens that `spender` is allowed
    /// to spend on behalf of `owner`
    function allowance(address owner, address spender) external view returns (uint256);

    /// @notice Sets `amount` as the allowance of `spender` over the caller's tokens.
    /// @dev Be aware of front-running risks: https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
    function approve(address spender, uint256 amount) external returns (bool);

    /// @notice Moves `amount` tokens from `from` to `to` using the allowance mechanism.
    /// `amount` is then deducted from the caller's allowance.
    function transferFrom(address from, address to, uint256 amount) external returns (bool);

    /// @notice Returns the name of the token.
    function name() external view returns (string memory);

    /// @notice Returns the symbol of the token.
    function symbol() external view returns (string memory);

    /// @notice Returns the decimals places of the token.
    function decimals() external view returns (uint8);
}
"
    },
    "lib/openzeppelin-contracts/contracts/token/ERC20/IERC20.sol": {
      "content": "// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.4.0) (token/ERC20/IERC20.sol)

pragma solidity >=0.4.16;

/**
 * @dev Interface of the ERC-20 standard as defined in the ERC.
 */
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);
}
"
    },
    "lib/openzeppelin-contracts/contracts/token/ERC20/utils/SafeERC20.sol": {
      "content": "// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.3.0) (token/ERC20/utils/SafeERC20.sol)

pragma solidity ^0.8.20;

import {IERC20} from "../IERC20.sol";
import {IERC1363} from "../../../interfaces/IERC1363.sol";

/**
 * @title SafeERC20
 * @dev Wrappers around ERC-20 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 {
    /**
     * @dev An operation with an ERC-20 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 Variant of {safeTransfer} that returns a bool instead of reverting if the operation is not successful.
     */
    function trySafeTransfer(IERC20 token, address to, uint256 value) internal returns (bool) {
        return _callOptionalReturnBool(token, abi.encodeCall(token.transfer, (to, value)));
    }

    /**
     * @dev Variant of {safeTransferFrom} that returns a bool instead of reverting if the operation is not successful.
     */
    function trySafeTransferFrom(IERC20 token, address from, address to, uint256 value) internal returns (bool) {
        return _callOptionalReturnBool(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.
     *
     * IMPORTANT: If the token implements ERC-7674 (ERC-20 with temporary allowance), and if the "client"
     * smart contract uses ERC-7674 to set temporary allowances, then the "client" smart contract should avoid using
     * this function. Performing a {safeIncreaseAllowance} or {safeDecreaseAllowance} operation on a token contract
     * that has a non-zero temporary allowance (for that particular owner-spender) will result in unexpected behavior.
     */
    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.
     *
     * IMPORTANT: If the token implements ERC-7674 (ERC-20 with temporary allowance), and if the "client"
     * smart contract uses ERC-7674 to set temporary allowances, then the "client" smart contract should avoid using
     * this function. Performing a {safeIncreaseAllowance} or {safeDecreaseAllowance} operation on a token contract
     * that has a non-zero temporary allowance (for that particular owner-spender) will result in unexpected behavior.
     */
    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.
     *
     * NOTE: If the token implements ERC-7674, this function will not modify any temporary allowance. This function
     * only sets the "standard" allowance. Any temporary allowance will remain active, in addition to the value being
     * set here.
     */
    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 Performs an {ERC1363} transferAndCall, with a fallback to the simple {ERC20} transfer if the target has no
     * code. This can be used to implement an {ERC721}-like safe transfer that rely on {ERC1363} checks when
     * targeting contracts.
     *
     * Reverts if the returned value is other than `true`.
     */
    function transferAndCallRelaxed(IERC1363 token, address to, uint256 value, bytes memory data) internal {
        if (to.code.length == 0) {
            safeTransfer(token, to, value);
        } else if (!token.transferAndCall(to, value, data)) {
            revert SafeERC20FailedOperation(address(token));
        }
    }

    /**
     * @dev Performs an {ERC1363} transferFromAndCall, with a fallback to the simple {ERC20} transferFrom if the target
     * has no code. This can be used to implement an {ERC721}-like safe transfer that rely on {ERC1363} checks when
     * targeting contracts.
     *
     * Reverts if the returned value is other than `true`.
     */
    function transferFromAndCallRelaxed(
        IERC1363 token,
        address from,
        address to,
        uint256 value,
        bytes memory data
    ) internal {
        if (to.code.length == 0) {
            safeTransferFrom(token, from, to, value);
        } else if (!token.transferFromAndCall(from, to, value, data)) {
            revert SafeERC20FailedOperation(address(token));
        }
    }

    /**
     * @dev Performs an {ERC1363} approveAndCall, with a fallback to the simple {ERC20} approve if the target has no
     * code. This can be used to implement an {ERC721}-like safe transfer that rely on {ERC1363} checks when
     * targeting contracts.
     *
     * NOTE: When the recipient address (`to`) has no code (i.e. is an EOA), this function behaves as {forceApprove}.
     * Opposedly, when the recipient address (`to`) has code, this function only attempts to call {ERC1363-approveAndCall}
     * once without retrying, and relies on the returned value to be true.
     *
     * Reverts if the returned value is other than `true`.
     */
    function approveAndCallRelaxed(IERC1363 token, address to, uint256 value, bytes memory data) internal {
        if (to.code.length == 0) {
            forceApprove(token, to, value);
        } else if (!token.approveAndCall(to, value, data)) {
            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 {_callOptionalReturnBool} that reverts if call fails to meet the requirements.
     */
    function _callOptionalReturn(IERC20 token, bytes memory data) private {
        uint256 returnSize;
        uint256 returnValue;
        assembly ("memory-safe") {
            let success := call(gas(), token, 0, add(data, 0x20), mload(data), 0, 0x20)
            // bubble errors
            if iszero(success) {
                let ptr := mload(0x40)
                returndatacopy(ptr, 0, returndatasize())
                revert(ptr, returndatasize())
            }
            returnSize := returndatasize()
            returnValue := mload(0)
        }

        if (returnSize == 0 ? address(token).code.length == 0 : returnValue != 1) {
            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 silently catches all reverts and returns a bool instead.
     */
    function _callOptionalReturnBool(IERC20 token, bytes memory data) private returns (bool) {
        bool success;
        uint256 returnSize;
        uint256 returnValue;
        assembly ("memory-safe") {
            success := call(gas(), token, 0, add(data, 0x20), mload(data), 0, 0x20)
            returnSize := returndatasize()
            returnValue := mload(0)
        }
        return success && (returnSize == 0 ? address(token).code.length > 0 : returnValue == 1);
    }
}
"
    },
    "src/interfaces/IStrategyAdapter.sol": {
      "content": "// SPDX-License-Identifier: MIT
pragma solidity ^0.8.23;

interface IStrategyAdapter {
    function deposit(uint256 amount) external returns (uint256 shares);
    
    function withdraw(uint256 amount) external returns (uint256 withdrawn);
    
    function balanceOf(address account) external view returns (uint256);
    
    function getCurrentAPY() external view returns (uint256);
    
    // APY tracking functions
    function updateMetrics() external;
    
    function getLastUpdateTime() external view returns (uint256);
    
    function isAPYStale() external view returns (bool);
}"
    },
    "lib/openzeppelin-contracts/contracts/interfaces/IERC1363.sol": {
      "content": "// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.4.0) (interfaces/IERC1363.sol)

pragma solidity >=0.6.2;

import {IERC20} from "./IERC20.sol";
import {IERC165} from "./IERC165.sol";

/**
 * @title IERC1363
 * @dev Interface of the ERC-1363 standard as defined in the https://eips.ethereum.org/EIPS/eip-1363[ERC-1363].
 *
 * Defines an extension interface for ERC-20 tokens that supports executing code on a recipient contract
 * after `transfer` or `transferFrom`, or code on a spender contract after `approve`, in a single transaction.
 */
interface IERC1363 is IERC20, IERC165 {
    /*
     * Note: the ERC-165 identifier for this interface is 0xb0202a11.
     * 0xb0202a11 ===
     *   bytes4(keccak256('transferAndCall(address,uint256)')) ^
     *   bytes4(keccak256('transferAndCall(address,uint256,bytes)')) ^
     *   bytes4(keccak256('transferFromAndCall(address,address,uint256)')) ^
     *   bytes4(keccak256('transferFromAndCall(address,address,uint256,bytes)')) ^
     *   bytes4(keccak256('approveAndCall(address,uint256)')) ^
     *   bytes4(keccak256('approveAndCall(address,uint256,bytes)'))
     */

    /**
     * @dev Moves a `value` amount of tokens from the caller's account to `to`
     * and then calls {IERC1363Receiver-onTransferReceived} on `to`.
     * @param to The address which you want to transfer to.
     * @param value The amount of tokens to be transferred.
     * @return A boolean value indicating whether the operation succeeded unless throwing.
     */
    function transferAndCall(address to, uint256 value) external returns (bool);

    /**
     * @dev Moves a `value` amount of tokens from the caller's account to `to`
     * and then calls {IERC1363Receiver-onTransferReceived} on `to`.
     * @param to The address which you want to transfer to.
     * @param value The amount of tokens to be transferred.
     * @param data Additional data with no specified format, sent in call to `to`.
     * @return A boolean value indicating whether the operation succeeded unless throwing.
     */
    function transferAndCall(address to, uint256 value, bytes calldata data) external returns (bool);

    /**
     * @dev Moves a `value` amount of tokens from `from` to `to` using the allowance mechanism
     * and then calls {IERC1363Receiver-onTransferReceived} on `to`.
     * @param from The address which you want to send tokens from.
     * @param to The address which you want to transfer to.
     * @param value The amount of tokens to be transferred.
     * @return A boolean value indicating whether the operation succeeded unless throwing.
     */
    function transferFromAndCall(address from, address to, uint256 value) external returns (bool);

    /**
     * @dev Moves a `value` amount of tokens from `from` to `to` using the allowance mechanism
     * and then calls {IERC1363Receiver-onTransferReceived} on `to`.
     * @param from The address which you want to send tokens from.
     * @param to The address which you want to transfer to.
     * @param value The amount of tokens to be transferred.
     * @param data Additional data with no specified format, sent in call to `to`.
     * @return A boolean value indicating whether the operation succeeded unless throwing.
     */
    function transferFromAndCall(address from, address to, uint256 value, bytes calldata data) external returns (bool);

    /**
     * @dev Sets a `value` amount of tokens as the allowance of `spender` over the
     * caller's tokens and then calls {IERC1363Spender-onApprovalReceived} on `spender`.
     * @param spender The address which will spend the funds.
     * @param value The amount of tokens to be spent.
     * @return A boolean value indicating whether the operation succeeded unless throwing.
     */
    function approveAndCall(address spender, uint256 value) external returns (bool);

    /**
     * @dev Sets a `value` amount of tokens as the allowance of `spender` over the
     * caller's tokens and then calls {IERC1363Spender-onApprovalReceived} on `spender`.
     * @param spender The address which will spend the funds.
     * @param value The amount of tokens to be spent.
     * @param data Additional data with no specified format, sent in call to `spender`.
     * @return A boolean value indicating whether the operation succeeded unless throwing.
     */
    function approveAndCall(address spender, uint256 value, bytes calldata data) external returns (bool);
}
"
    },
    "lib/openzeppelin-contracts/contracts/interfaces/IERC20.sol": {
      "content": "// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.4.0) (interfaces/IERC20.sol)

pragma solidity >=0.4.16;

import {IERC20} from "../token/ERC20/IERC20.sol";
"
    },
    "lib/openzeppelin-contracts/contracts/interfaces/IERC165.sol": {
      "content": "// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.4.0) (interfaces/IERC165.sol)

pragma solidity >=0.4.16;

import {IERC165} from "../utils/introspection/IERC165.sol";
"
    },
    "lib/openzeppelin-contracts/contracts/utils/introspection/IERC165.sol": {
      "content": "// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.4.0) (utils/introspection/IERC165.sol)

pragma solidity >=0.4.16;

/**
 * @dev Interface of the ERC-165 standard, as defined in the
 * https://eips.ethereum.org/EIPS/eip-165[ERC].
 *
 * Implementers can declare support of contract interfaces, which can then be
 * queried by others ({ERC165Checker}).
 *
 * For an implementation, see {ERC165}.
 */
interface IERC165 {
    /**
     * @dev Returns true if this contract implements the interface defined by
     * `interfaceId`. See the corresponding
     * https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[ERC section]
     * to learn more about how these ids are created.
     *
     * This function call must use less than 30 000 gas.
     */
    function supportsInterface(bytes4 interfaceId) external view returns (bool);
}
"
    }
  },
  "settings": {
    "remappings": [
      "forge-std/=lib/forge-std/src/",
      "@openzeppelin/=lib/openzeppelin-contracts/",
      "@openzeppelin/contracts/=lib/openzeppelin-contracts/contracts/",
      "erc4626-tests/=lib/openzeppelin-contracts/lib/erc4626-tests/",
      "halmos-cheatcodes/=lib/openzeppelin-contracts/lib/halmos-cheatcodes/src/",
      "openzeppelin-contracts/=lib/openzeppelin-contracts/"
    ],
    "optimizer": {
      "enabled": true,
      "runs": 400
    },
    "metadata": {
      "useLiteralContent": false,
      "bytecodeHash": "ipfs",
      "appendCBOR": true
    },
    "outputSelection": {
      "*": {
        "*": [
          "evm.bytecode",
          "evm.deployedBytecode",
          "devdoc",
          "userdoc",
          "metadata",
          "abi"
        ]
      }
    },
    "evmVersion": "cancun",
    "viaIR": true
  }
}}