CVGCVXStrategyTrigger

// SPDX-License-Identifier: AGPL-3.0
pragma solidity ^0.8.23;

// lib/openzeppelin-contracts/contracts/token/ERC20/IERC20.sol

// OpenZeppelin Contracts (last updated v4.9.0) (token/ERC20/IERC20.sol)

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

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

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

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

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

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

// src/interfaces/ICvgCvxStaking.sol

/**
 * @title ICvgCvxStaking
 * @notice Interface for CVG cvgCVX Staking Position Service
 * @dev Contract: 0x2c1D293c50C6d1a4370ebb442A02c5956bbAb119
 */
interface ICvgCvxStaking {
    // Enums
    enum IN_TOKEN_TYPE {
        cvgCVX,    // 0
        CVX,       // 1
        CVX1,      // 2
        ETH        // 3
    }

    enum OUT_TOKEN_TYPE {
        cvgCVX,    // 0
        CVX1,      // 1
        CVX        // 2
    }

    struct TokenAmount {
        IERC20 token;
        uint256 amount;
    }

    // Events
    event Deposit(address indexed user, uint256 indexed cycleId, uint256 amount);
    event Withdraw(address indexed user, uint256 indexed cycleId, uint256 amount);

    // Core functions
    function deposit(
        uint256 amountIn,
        IN_TOKEN_TYPE inTokenType,
        uint256 minCvgCvxAmountOut,
        uint256 minCvxAmountOut,
        bool isLock
    ) external payable;

    function withdraw(
        uint256 amount,
        OUT_TOKEN_TYPE tokenType,
        uint256 minCvx1AmountOut
    ) external;

    function claimCvgRewards(address account) external;
    function claimCvgCvxRewards(address account, uint256 minCvgCvxAmountOut, bool isConvert) external;
    function claimCvgCvxMultiple(address operator) external returns (uint256, TokenAmount[] memory);
    function getAllClaimableAmounts(address account) external view returns (uint256, TokenAmount[] memory);

    // State views
    function balanceOf(address account) external view returns (uint256);
    function stakingCycle() external view returns (uint256);
    function depositPaused() external view returns (bool);

    // Getters
    function cvgCVX() external view returns (address);
    function cvx1() external view returns (address);
    function CVX() external view returns (address);
}

// src/CVGCVXStrategyTrigger.sol

/**
 * @title Custom Strategy Trigger Base
 * @author Yearn.finance
 */
abstract contract CustomStrategyTriggerBase {
    function reportTrigger(
        address _strategy
    ) external view virtual returns (bool, bytes memory);
}

interface IStrategy {
    function isShutdown() external view returns (bool);
    function totalAssets() external view returns (uint256);
    function lastReport() external view returns (uint256);
    function profitMaxUnlockTime() external view returns (uint256);
}

interface IBaseFee {
    function basefee_global() external view returns (uint256);
}

interface ICommonReportTrigger {
    function baseFeeProvider() external view returns (address);
    function acceptableBaseFee() external view returns (uint256);
}

/**
 * @title CVGCVXStrategyTrigger
 * @notice Custom report trigger for cvgCVX strategy
 * @dev Only triggers harvest when claimable rewards exist
 *      Respects strategy's profitMaxUnlockTime to prevent excessive reporting
 *      Uses CommonReportTrigger's base fee settings to prevent expensive harvests
 */
contract CVGCVXStrategyTrigger is CustomStrategyTriggerBase {
    // CVG staking contract to check claimable rewards
    ICvgCvxStaking public constant STAKING = ICvgCvxStaking(0x2c1D293c50C6d1a4370ebb442A02c5956bbAb119);

    // Yearn's CommonReportTrigger for base fee checks
    ICommonReportTrigger public constant COMMON_TRIGGER = ICommonReportTrigger(0xA045D4dAeA28BA7Bfe234c96eAa03daFae85A147);

    /**
     * @notice Determines if strategy should report based on claimable rewards
     * @param _strategy Address of the cvgCVX strategy
     * @return . True if strategy should report
     * @return . Encoded call data or reason for not reporting
     */
    function reportTrigger(
        address _strategy
    ) external view override returns (bool, bytes memory) {
        IStrategy strategy = IStrategy(_strategy);

        // Don't report if strategy is shutdown
        if (strategy.isShutdown()) {
            return (false, bytes("Strategy is shutdown"));
        }

        // Don't report if no assets deployed
        if (strategy.totalAssets() == 0) {
            return (false, bytes("No assets deployed"));
        }

        // Ensure profit unlock time has passed since last report
        uint256 timeSinceLastReport = block.timestamp - strategy.lastReport();
        if (timeSinceLastReport <= strategy.profitMaxUnlockTime()) {
            return (false, bytes("Profit unlock time not reached"));
        }

        // Check base fee if provider is configured
        address baseFeeProvider = COMMON_TRIGGER.baseFeeProvider();
        if (baseFeeProvider != address(0)) {
            uint256 currentBaseFee = IBaseFee(baseFeeProvider).basefee_global();
            uint256 acceptableBaseFee = COMMON_TRIGGER.acceptableBaseFee();

            if (currentBaseFee > acceptableBaseFee) {
                return (false, bytes("Base fee too high"));
            }
        }

        // Check if there are claimable rewards
        (uint256 cvgAmount, ICvgCvxStaking.TokenAmount[] memory cvxRewards) =
            STAKING.getAllClaimableAmounts(_strategy);

        // Check if cvgCVX rewards exist and are non-zero
        bool hasRewards = false;
        for (uint256 i = 0; i < cvxRewards.length; i++) {
            if (cvxRewards[i].amount > 0) {
                hasRewards = true;
                break;
            }
        }

        if (!hasRewards && cvgAmount == 0) {
            return (false, bytes("No rewards available"));
        }

        // All checks passed - rewards exist, time to report!
        return (true, abi.encodeWithSignature("report()"));
    }
}