// SPDX-License-Identifier: MIT

pragma solidity 0.8.19;

// OpenZeppelin Contracts (last updated v4.6.0) (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);
}

// OpenZeppelin Contracts (last updated v4.8.0) (token/ERC20/utils/SafeERC20.sol)

// OpenZeppelin Contracts v4.4.1 (token/ERC20/extensions/draft-IERC20Permit.sol)

/**
 * @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.
 */
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].
     */
    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);
}

// OpenZeppelin Contracts (last updated v4.8.0) (utils/Address.sol)

/**
 * @dev Collection of functions related to the address type
 */
library Address {
    /**
     * @dev Returns true if `account` is a contract.
     *
     * [IMPORTANT]
     * ====
     * It is unsafe to assume that an address for which this function returns
     * false is an externally-owned account (EOA) and not a contract.
     *
     * Among others, `isContract` will return false for the following
     * types of addresses:
     *
     *  - an externally-owned account
     *  - a contract in construction
     *  - an address where a contract will be created
     *  - an address where a contract lived, but was destroyed
     * ====
     *
     * [IMPORTANT]
     * ====
     * You shouldn't rely on `isContract` to protect against flash loan attacks!
     *
     * Preventing calls from contracts is highly discouraged. It breaks composability, breaks support for smart wallets
     * like Gnosis Safe, and does not provide security since it can be circumvented by calling from a contract
     * constructor.
     * ====
     */
    function isContract(address account) internal view returns (bool) {
        // This method relies on extcodesize/address.code.length, which returns 0
        // for contracts in construction, since the code is only stored at the end
        // of the constructor execution.

        return account.code.length > 0;
    }

    /**
     * @dev Replacement for Solidity's `transfer`: sends `amount` wei to
     * `recipient`, forwarding all available gas and reverting on errors.
     *
     * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost
     * of certain opcodes, possibly making contracts go over the 2300 gas limit
     * imposed by `transfer`, making them unable to receive funds via
     * `transfer`. {sendValue} removes this limitation.
     *
     * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].
     *
     * IMPORTANT: because control is transferred to `recipient`, care must be
     * taken to not create reentrancy vulnerabilities. Consider using
     * {ReentrancyGuard} or the
     * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
     */
    function sendValue(address payable recipient, uint256 amount) internal {
        require(address(this).balance >= amount, "Address: insufficient balance");

        (bool success, ) = recipient.call{value: amount}("");
        require(success, "Address: unable to send value, recipient may have reverted");
    }

    /**
     * @dev Performs a Solidity function call using a low level `call`. A
     * plain `call` is an unsafe replacement for a function call: use this
     * function instead.
     *
     * If `target` reverts with a revert reason, it is bubbled up by this
     * function (like regular Solidity function calls).
     *
     * Returns the raw returned data. To convert to the expected return value,
     * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].
     *
     * Requirements:
     *
     * - `target` must be a contract.
     * - calling `target` with `data` must not revert.
     *
     * _Available since v3.1._
     */
    function functionCall(address target, bytes memory data) internal returns (bytes memory) {
        return functionCallWithValue(target, data, 0, "Address: low-level call failed");
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with
     * `errorMessage` as a fallback revert reason when `target` reverts.
     *
     * _Available since v3.1._
     */
    function functionCall(
        address target,
        bytes memory data,
        string memory errorMessage
    ) internal returns (bytes memory) {
        return functionCallWithValue(target, data, 0, errorMessage);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but also transferring `value` wei to `target`.
     *
     * Requirements:
     *
     * - the calling contract must have an ETH balance of at least `value`.
     * - the called Solidity function must be `payable`.
     *
     * _Available since v3.1._
     */
    function functionCallWithValue(
        address target,
        bytes memory data,
        uint256 value
    ) internal returns (bytes memory) {
        return functionCallWithValue(target, data, value, "Address: low-level call with value failed");
    }

    /**
     * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but
     * with `errorMessage` as a fallback revert reason when `target` reverts.
     *
     * _Available since v3.1._
     */
    function functionCallWithValue(
        address target,
        bytes memory data,
        uint256 value,
        string memory errorMessage
    ) internal returns (bytes memory) {
        require(address(this).balance >= value, "Address: insufficient balance for call");
        (bool success, bytes memory returndata) = target.call{value: value}(data);
        return verifyCallResultFromTarget(target, success, returndata, errorMessage);
    }

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

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
     * but performing a static call.
     *
     * _Available since v3.3._
     */
    function functionStaticCall(
        address target,
        bytes memory data,
        string memory errorMessage
    ) internal view returns (bytes memory) {
        (bool success, bytes memory returndata) = target.staticcall(data);
        return verifyCallResultFromTarget(target, success, returndata, errorMessage);
    }

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

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
     * but performing a delegate call.
     *
     * _Available since v3.4._
     */
    function functionDelegateCall(
        address target,
        bytes memory data,
        string memory errorMessage
    ) internal returns (bytes memory) {
        (bool success, bytes memory returndata) = target.delegatecall(data);
        return verifyCallResultFromTarget(target, success, returndata, errorMessage);
    }

    /**
     * @dev Tool to verify that a low level call to smart-contract was successful, and revert (either by bubbling
     * the revert reason or using the provided one) in case of unsuccessful call or if target was not a contract.
     *
     * _Available since v4.8._
     */
    function verifyCallResultFromTarget(
        address target,
        bool success,
        bytes memory returndata,
        string memory errorMessage
    ) internal view returns (bytes memory) {
        if (success) {
            if (returndata.length == 0) {
                // only check isContract if the call was successful and the return data is empty
                // otherwise we already know that it was a contract
                require(isContract(target), "Address: call to non-contract");
            }
            return returndata;
        } else {
            _revert(returndata, errorMessage);
        }
    }

    /**
     * @dev Tool to verify that a low level call was successful, and revert if it wasn't, either by bubbling the
     * revert reason or using the provided one.
     *
     * _Available since v4.3._
     */
    function verifyCallResult(
        bool success,
        bytes memory returndata,
        string memory errorMessage
    ) internal pure returns (bytes memory) {
        if (success) {
            return returndata;
        } else {
            _revert(returndata, errorMessage);
        }
    }

    function _revert(bytes memory returndata, string memory errorMessage) 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(errorMessage);
        }
    }
}

/**
 * @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;

    function safeTransfer(
        IERC20 token,
        address to,
        uint256 value
    ) internal {
        _callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value));
    }

    function safeTransferFrom(
        IERC20 token,
        address from,
        address to,
        uint256 value
    ) internal {
        _callOptionalReturn(token, abi.encodeWithSelector(token.transferFrom.selector, from, to, value));
    }

    /**
     * @dev Deprecated. This function has issues similar to the ones found in
     * {IERC20-approve}, and its usage is discouraged.
     *
     * Whenever possible, use {safeIncreaseAllowance} and
     * {safeDecreaseAllowance} instead.
     */
    function safeApprove(
        IERC20 token,
        address spender,
        uint256 value
    ) internal {
        // safeApprove should only be called when setting an initial allowance,
        // or when resetting it to zero. To increase and decrease it, use
        // 'safeIncreaseAllowance' and 'safeDecreaseAllowance'
        require(
            (value == 0) || (token.allowance(address(this), spender) == 0),
            "SafeERC20: approve from non-zero to non-zero allowance"
        );
        _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, value));
    }

    function safeIncreaseAllowance(
        IERC20 token,
        address spender,
        uint256 value
    ) internal {
        uint256 newAllowance = token.allowance(address(this), spender) + value;
        _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));
    }

    function safeDecreaseAllowance(
        IERC20 token,
        address spender,
        uint256 value
    ) internal {
        unchecked {
            uint256 oldAllowance = token.allowance(address(this), spender);
            require(oldAllowance >= value, "SafeERC20: decreased allowance below zero");
            uint256 newAllowance = oldAllowance - value;
            _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));
        }
    }

    function safePermit(
        IERC20Permit token,
        address owner,
        address spender,
        uint256 value,
        uint256 deadline,
        uint8 v,
        bytes32 r,
        bytes32 s
    ) internal {
        uint256 nonceBefore = token.nonces(owner);
        token.permit(owner, spender, value, deadline, v, r, s);
        uint256 nonceAfter = token.nonces(owner);
        require(nonceAfter == nonceBefore + 1, "SafeERC20: permit did not succeed");
    }

    /**
     * @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement
     * on the return value: the return value is optional (but if data is returned, it must not be false).
     * @param token The token targeted by the call.
     * @param data The call data (encoded using abi.encode or one of its variants).
     */
    function _callOptionalReturn(IERC20 token, bytes memory data) private {
        // We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since
        // we're implementing it ourselves. We use {Address-functionCall} to perform this call, which verifies that
        // the target address contains contract code and also asserts for success in the low-level call.

        bytes memory returndata = address(token).functionCall(data, "SafeERC20: low-level call failed");
        if (returndata.length > 0) {
            // Return data is optional
            require(abi.decode(returndata, (bool)), "SafeERC20: ERC20 operation did not succeed");
        }
    }
}

// OpenZeppelin Contracts (last updated v4.7.0) (access/Ownable.sol)

// OpenZeppelin Contracts v4.4.1 (utils/Context.sol)

/**
 * @dev Provides information about the current execution context, including the
 * sender of the transaction and its data. While these are generally available
 * via msg.sender and msg.data, they should not be accessed in such a direct
 * manner, since when dealing with meta-transactions the account sending and
 * paying for execution may not be the actual sender (as far as an application
 * is concerned).
 *
 * This contract is only required for intermediate, library-like contracts.
 */
abstract contract Context {
    function _msgSender() internal view virtual returns (address) {
        return msg.sender;
    }

    function _msgData() internal view virtual returns (bytes calldata) {
        return msg.data;
    }
}

/**
 * @dev Contract module which provides a basic access control mechanism, where
 * there is an account (an owner) that can be granted exclusive access to
 * specific functions.
 *
 * By default, the owner account will be the one that deploys the contract. This
 * can later be changed with {transferOwnership}.
 *
 * This module is used through inheritance. It will make available the modifier
 * `onlyOwner`, which can be applied to your functions to restrict their use to
 * the owner.
 */
abstract contract Ownable is Context {
    address private _owner;

    event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);

    /**
     * @dev Initializes the contract setting the deployer as the initial owner.
     */
    constructor() {
        _transferOwnership(_msgSender());
    }

    /**
     * @dev Throws if called by any account other than the owner.
     */
    modifier onlyOwner() {
        _checkOwner();
        _;
    }

    /**
     * @dev Returns the address of the current owner.
     */
    function owner() public view virtual returns (address) {
        return _owner;
    }

    /**
     * @dev Throws if the sender is not the owner.
     */
    function _checkOwner() internal view virtual {
        require(owner() == _msgSender(), "Ownable: caller is not the owner");
    }

    /**
     * @dev Leaves the contract without owner. It will not be possible to call
     * `onlyOwner` functions anymore. Can only be called by the current owner.
     *
     * NOTE: Renouncing ownership will leave the contract without an owner,
     * thereby removing any functionality that is only available to the owner.
     */
    function renounceOwnership() public virtual onlyOwner {
        _transferOwnership(address(0));
    }

    /**
     * @dev Transfers ownership of the contract to a new account (`newOwner`).
     * Can only be called by the current owner.
     */
    function transferOwnership(address newOwner) public virtual onlyOwner {
        require(newOwner != address(0), "Ownable: new owner is the zero address");
        _transferOwnership(newOwner);
    }

    /**
     * @dev Transfers ownership of the contract to a new account (`newOwner`).
     * Internal function without access restriction.
     */
    function _transferOwnership(address newOwner) internal virtual {
        address oldOwner = _owner;
        _owner = newOwner;
        emit OwnershipTransferred(oldOwner, newOwner);
    }
}

interface ICurvePool {
    // function get_balances() external view returns (uint256[] memory);

    function balances(uint256 i) external view returns (uint256);

    function remove_liquidity_one_coin(
        uint256 burn_amount,
        int128 coin_idx,
        uint256 min_received
    ) external returns (uint256);

    function remove_liquidity(
        uint256 burn_amount,
        uint256[2] memory amounts
    ) external returns (uint256[2] memory);

    function add_liquidity(
        uint256[2] memory amounts,
        uint256 min_mint_amount
    ) external returns (uint256);

    function calc_token_amount(
        uint256[2] memory _amounts,
        bool _is_deposit
    ) external view returns (uint256);

    function exchange(
        int128 i,
        int128 j,
        uint256 dx,
        uint256 min_dy
    ) external returns (uint256);

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

interface ICVXBooster {
    struct PoolInfo {
        address lptoken;
        address token;
        address gauge;
        address crvRewards;
        address stash;
        bool shutdown;
    }

    function poolInfo(uint256 _pid) external view returns (PoolInfo memory);

    function depositAll(uint256 _pid, bool _stake) external returns (bool);

    function withdrawAll(uint256 _pid) external returns (bool);

    function deposit(
        uint256 _pid,
        uint256 _amount,
        bool _stake
    ) external returns (bool);

    function withdraw(uint256 _pid, uint256 _amount) external returns (bool);
}

interface IBaseRewardPool {
    function withdrawAndUnwrap(
        uint256 amount,
        bool claim
    ) external returns (bool);

    function withdrawAll(bool claim) external;

    function withdrawAllAndUnwrap(bool claim) external;

    function withdraw(uint256 amount, bool claim) external;

    function stakeFor(address _for, uint256 _amount) external returns (bool);

    function stakeAll() external returns (bool);

    function stake(uint256 _amount) external returns (bool);

    function earned(address account) external view returns (uint256);

    function getReward(
        address _account,
        bool _claimExtras
    ) external returns (bool);

    function getReward() external returns (bool);

    function balanceOf(address account) external view returns (uint256);

    function rewardToken() external view returns (address);
}

contract CVXStaker is Ownable {
    using SafeERC20 for IERC20;

    address public operator;
    // @notice CLP tokens for curve pool
    IERC20 public immutable clpToken;
    CvxPoolInfo public cvxPoolInfo;
    // @notice Cvx booster
    ICVXBooster public immutable booster;

    address public rewardsRecipient;
    address[] public rewardTokens;

    struct CvxPoolInfo {
        address token;
        address rewards;
        uint32 pId;
    }

    struct Position {
        uint256 staked;
        uint256 earned;
    }

    error NotOperator();
    error NotOperatorOrOwner();

    event SetCvxPoolInfo(uint32 indexed pId, address token, address rewards);
    event SetOperator(address operator);
    event RecoveredToken(address token, address to, uint256 amount);
    event SetRewardsRecipient(address recipient);
    event SetRewardTokens(address[] newTokens);

    constructor(
        address _operator,
        IERC20 _clpToken,
        ICVXBooster _booster,
        address[] memory _rewardTokens
    ) {
        operator = _operator;
        clpToken = _clpToken;
        booster = _booster;
        rewardTokens = _rewardTokens;
    }

    /**
     * @dev Sets the CVX pool information.
     * @param _pId The pool ID of the CVX pool.
     * @param _token The address of the CLP token.
     * @param _rewards The address of the CVX reward pool.
     * Only the contract owner can call this function.
     */
    function setCvxPoolInfo(
        uint32 _pId,
        address _token,
        address _rewards
    ) external onlyOwner {
        cvxPoolInfo.pId = _pId;
        cvxPoolInfo.token = _token;
        cvxPoolInfo.rewards = _rewards;

        emit SetCvxPoolInfo(_pId, _token, _rewards);
    }

    /**
     * @notice Set operator
     * @param _operator New operator
     */
    function setOperator(address _operator) external onlyOwner {
        operator = _operator;

        emit SetOperator(_operator);
    }

    /**
     * @dev Sets the address of the rewards recipient.
     * @param _recipeint The address of the rewards recipient.
     * Only the contract owner can call this function.
     */
    function setRewardsRecipient(address _recipeint) external onlyOwner {
        rewardsRecipient = _recipeint;

        emit SetRewardsRecipient(_recipeint);
    }

    function setRewardTokens(address[] calldata newTokens) external onlyOwner {
      rewardTokens = newTokens;

      emit SetRewardTokens(newTokens);
    }

    /**
     * @notice Recover any token from cvxStaker 
     * @param token Token to recover
     * @param to Recipient address
     * @param amount Amount to recover
     */
    function recoverToken(
        address token,
        address to,
        uint256 amount
    ) external onlyOwner {
        IERC20(token).safeTransfer(to, amount);

        emit RecoveredToken(token, to, amount);
    }

    /**
     * @dev Checks whether the CVX pool is currently shutdown.
     * @return A boolean indicating whether the CVX pool is currently shutdown.
     */
    function isCvxShutdown() public view returns (bool) {
        // It's not necessary to check that the booster itself is shutdown, as that can only
        // be shutdown once all the pools are shutdown - see Cvx BoosterOwner.shutdownSystem()
        return booster.poolInfo(cvxPoolInfo.pId).shutdown;
    }

    /**
     * @dev Deposits a specified amount of CLP tokens into the booster and stakes them in the reward pool.
     * @param amount The amount of CLP tokens to deposit and stake.
     * Only the operator can call this function.
     */
    function depositAndStake(uint256 amount) external onlyOperator {
        // Only deposit if the aura pool is open. Otherwise leave the CLP Token in this contract.
        if (!isCvxShutdown()) {
            clpToken.safeIncreaseAllowance(address(booster), amount);
            booster.deposit(cvxPoolInfo.pId, amount, true);
        }
    }

    /**
     * @dev Withdraws a specified amount of staked tokens from the reward pool and unwraps them to the original tokens.
     * @param amount The amount of tokens to withdraw and unwrap.
     * @param claim A boolean indicating whether to claim rewards before withdrawing.
     * @param to The address to receive the unwrapped tokens.
     * If set to 0x0, the tokens will remain in the contract.
     * Only the contract owner or operator can call this function.
     */
    function withdrawAndUnwrap(
        uint256 amount,
        bool claim,
        address to
    ) external onlyOperatorOrOwner {
        // Optimistically use CLP balance in this contract, and then try and unstake any remaining
        uint256 clpBalance = clpToken.balanceOf(address(this));
        uint256 toUnstake = (amount < clpBalance) ? 0 : amount - clpBalance;
        if (toUnstake > 0) {
            IBaseRewardPool(cvxPoolInfo.rewards).withdrawAndUnwrap(
                toUnstake,
                claim
            );
        }

        if (to != address(0)) {
            // unwrapped amount is 1 to 1
            clpToken.safeTransfer(to, amount);
        }
    }

    /**
     * @dev Withdraws all staked tokens from the reward pool and unwraps them to the original tokens.
     * @param claim A boolean indicating whether to claim rewards before withdrawing.
     * @param sendToOwner A boolean indicating whether to send the unwrapped tokens to the owner.
     * If false, the tokens will remain in the contract.
     * Only the contract owner can call this function.
     */
    function withdrawAllAndUnwrap(
        bool claim,
        bool sendToOwner
    ) external onlyOwner {
        IBaseRewardPool(cvxPoolInfo.rewards).withdrawAllAndUnwrap(claim);
        if (sendToOwner) {
            uint256 totalBalance = clpToken.balanceOf(address(this));
            /// @dev msg.sender is the owner, due to onlyOwner modifier
            clpToken.safeTransfer(msg.sender, totalBalance);
        }
    }

    /**
     * @dev Claims the rewards and transfers them to the rewards recipient, if specified.
     * @param claimExtras A boolean indicating whether to claim extra rewards.
     */
    function getReward(bool claimExtras) external {
        IBaseRewardPool(cvxPoolInfo.rewards).getReward(
            address(this),
            claimExtras
        );
    }

    error OutOfBounds(uint8 check);

    function transferReward(uint256 initialIndex, uint256 lastIndex) external {
      if (initialIndex >= lastIndex) {
        revert OutOfBounds(0);
      }
      if (lastIndex > rewardTokens.length) {
        revert OutOfBounds(1);
      }

      if (rewardsRecipient != address(0)) {
        for (uint i = initialIndex; i < lastIndex; ) {
            uint256 balance = IERC20(rewardTokens[i]).balanceOf(
                address(this)
            );
            if (balance != 0) {
              IERC20(rewardTokens[i]).safeTransfer(rewardsRecipient, balance);
            }
            unchecked {++i;}
        }
      }
    }

    /**
     * @dev Returns the current staked balance of the contract.
     * @return balance The current staked balance.
     */
    function stakedBalance() public view returns (uint256 balance) {
        balance = IBaseRewardPool(cvxPoolInfo.rewards).balanceOf(address(this));
    }

    function getTotalBalance() public view returns(uint256 balance) {
      unchecked {
        balance = stakedBalance() + clpToken.balanceOf(address(this));
      }
    }

    /**
     * @dev Returns the amount of earned rewards by the contract.
     * @return earnedRewards The amount of earned rewards.
     */
    function earned() public view returns (uint256 earnedRewards) {
        earnedRewards = IBaseRewardPool(cvxPoolInfo.rewards).earned(
            address(this)
        );
    }

    /**
     * @notice show staked position and earned rewards
     */
    function showPositions() external view returns (Position memory position) {
        position.staked = stakedBalance();
        position.earned = earned();
    }

    /// @dev Modifier to restrict function execution to only the contract operator.
    /// @notice Throws a custom exception `NotOperator` if the caller is not the operator.
    modifier onlyOperator() {
        if (msg.sender != operator) {
            revert NotOperator();
        }
        _;
    }

    /// @dev Modifier to restrict function execution to only the contract operator or owner.
    /// @notice Throws a custom exception `NotOperatorOrOwner` if the caller is neither the operator nor the owner.
    modifier onlyOperatorOrOwner() {
        if (msg.sender != operator && msg.sender != owner()) {
            revert NotOperatorOrOwner();
        }
        _;
    }
}