// File: contracts\interfaces\IBooster.sol

// SPDX-License-Identifier: MIT
pragma solidity 0.8.10;

interface IBooster {
   function isShutdown() external view returns(bool);
   function withdrawTo(uint256,uint256,address) external;
   function claimCrv(uint256 _pid, address _gauge) external;
   function setGaugeRedirect(uint256 _pid) external returns(bool);
   function owner() external view returns(address);
   function rewardManager() external view returns(address);
   function feeDeposit() external view returns(address);
   function factoryCrv(address _factory) external view returns(address _crv);
   function calculatePlatformFees(uint256 _amount) external view returns(uint256);
   function addPool(address _lptoken, address _gauge, address _factory) external returns(bool);
   function shutdownPool(uint256 _pid) external returns(bool);
   function poolInfo(uint256) external view returns(address _lptoken, address _gauge, address _rewards,bool _shutdown, address _factory);
   function poolLength() external view returns (uint256);
   function activeMap(address) external view returns(bool);
   function setPoolManager(address _poolM) external;
}

// File: contracts\interfaces\IGauge.sol

pragma solidity 0.8.10;

interface IGauge {
    function deposit(uint256) external;
    function balanceOf(address) external view returns (uint256);
    function working_balances(address) external view returns (uint256);
    function totalSupply() external view returns (uint256);
    function working_supply() external view returns (uint256);
    function withdraw(uint256) external;
    function claim_rewards() external;
    function claim_rewards(address _account) external;
    function lp_token() external view returns(address);
    function set_rewards_receiver(address _receiver) external;
    function reward_count() external view returns(uint256);
    function reward_tokens(uint256 _rid) external view returns(address _rewardToken);
    function reward_data(address _reward) external view returns(address distributor, uint256 period_finish, uint256 rate, uint256 last_update, uint256 integral);
    function claimed_reward(address _account, address _token) external view returns(uint256);
    function claimable_reward(address _account, address _token) external view returns(uint256);
    function claimable_tokens(address _account) external returns(uint256);
    function inflation_rate(uint256 _week) external view returns(uint256);
    function period() external view returns(uint256);
    function period_timestamp(uint256 _period) external view returns(uint256);
    // function claimable_reward_write(address _account, address _token) external returns(uint256);
}

// File: contracts\interfaces\ICrvMinter.sol

pragma solidity 0.8.10;

interface ICrvMinter {
    function mint(address) external;
}

// File: @openzeppelin\contracts\token\ERC20\IERC20.sol


pragma solidity ^0.8.0;

/**
 * @dev Interface of the ERC20 standard as defined in the EIP.
 */
interface IERC20 {
    /**
     * @dev Returns the amount of tokens in existence.
     */
    function totalSupply() external view returns (uint256);

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

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

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

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

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

    /**
     * @dev Emitted when `value` tokens are moved from one account (`from`) to
     * another (`to`).
     *
     * Note that `value` may be zero.
     */
    event Transfer(address indexed from, address indexed to, uint256 value);

    /**
     * @dev Emitted when the allowance of a `spender` for an `owner` is set by
     * a call to {approve}. `value` is the new allowance.
     */
    event Approval(address indexed owner, address indexed spender, uint256 value);
}

// File: @openzeppelin\contracts\utils\Address.sol

pragma solidity ^0.8.0;

/**
 * @dev Collection of functions related to the address type
 */
library Address {
    /**
     * @dev Returns true if `account` is a contract.
     *
     * [IMPORTANT]
     * ====
     * It is unsafe to assume that an address for which this function returns
     * false is an externally-owned account (EOA) and not a contract.
     *
     * Among others, `isContract` will return false for the following
     * types of addresses:
     *
     *  - an externally-owned account
     *  - a contract in construction
     *  - an address where a contract will be created
     *  - an address where a contract lived, but was destroyed
     * ====
     */
    function isContract(address account) internal view returns (bool) {
        // This method relies on extcodesize, which returns 0 for contracts in
        // construction, since the code is only stored at the end of the
        // constructor execution.

        uint256 size;
        assembly {
            size := extcodesize(account)
        }
        return size > 0;
    }

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

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

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

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

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

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

        (bool success, bytes memory returndata) = target.call{value: value}(data);
        return verifyCallResult(success, returndata, errorMessage);
    }

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

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

        (bool success, bytes memory returndata) = target.staticcall(data);
        return verifyCallResult(success, returndata, errorMessage);
    }

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

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

        (bool success, bytes memory returndata) = target.delegatecall(data);
        return verifyCallResult(success, returndata, errorMessage);
    }

    /**
     * @dev Tool to verifies that a low level call was successful, and revert if it wasn't, either by bubbling the
     * revert reason 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 {
            // 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

                assembly {
                    let returndata_size := mload(returndata)
                    revert(add(32, returndata), returndata_size)
                }
            } else {
                revert(errorMessage);
            }
        }
    }
}

// File: @openzeppelin\contracts\token\ERC20\utils\SafeERC20.sol

pragma solidity ^0.8.0;


/**
 * @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));
        }
    }

    /**
     * @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");
        }
    }
}

// File: contracts\VoterProxy.sol

pragma solidity 0.8.10;
contract VoterProxy {
    using SafeERC20 for IERC20;
    
    address public owner;
    address public pendingOwner;
    address public operator;
    
    mapping (address => bool) public protectedTokens;

    event SetPendingOwner(address indexed _address);
    event OwnerChanged(address indexed _address);

    constructor(){
        owner = msg.sender;
    }

    function getName() external pure returns (string memory) {
        return "ConvexProxy";
    }

    //set next owner
    function setPendingOwner(address _po) external {
        require(msg.sender == owner, "!auth");
        pendingOwner = _po;
        emit SetPendingOwner(_po);
    }

    //claim ownership
    function acceptPendingOwner() external {
        require(msg.sender == pendingOwner, "!p_owner");

        owner = pendingOwner;
        pendingOwner = address(0);
        emit OwnerChanged(owner);
    }

    function setOperator(address _operator) external {
        require(msg.sender == owner, "!auth");
        require(operator == address(0) || IBooster(operator).isShutdown() == true, "needs shutdown");
        
        //require isshutdown interface
        require(IBooster(_operator).isShutdown() == false, "no shutdown interface");
        
        operator = _operator;
    }

    function deposit(address _token, address _gauge, uint256 _amount) external returns(bool){
        require(msg.sender == operator, "!auth");
        if(protectedTokens[_token] == false){
            protectedTokens[_token] = true;
        }
        if(protectedTokens[_gauge] == false){
            protectedTokens[_gauge] = true;
        }

        if (_amount > 0) {
            IERC20(_token).safeApprove(_gauge, 0);
            IERC20(_token).safeApprove(_gauge, _amount);
            IGauge(_gauge).deposit(_amount);
        }
        return true;
    }

    //function for rescuing tokens that are NOT lp or gauge tokens
    function rescue(IERC20 _asset, address _to) external returns (uint256 balance) {
        require(msg.sender == operator, "!auth");

        //check protection
        if(protectedTokens[address(_asset)] == true){
            return 0;
        }

        balance = _asset.balanceOf(address(this));
        _asset.safeTransfer(_to, balance);
        return balance;
    }

    // Withdraw partial funds from a gauge
    function withdraw(address _token, address _gauge, uint256 _amount) public returns(bool){
        require(msg.sender == operator, "!auth");

        //withdraw from the given gauge and return given tokens
        //because this is withdrawing protectedTokens,
        //legitimacy of request must be enforced on operator side
        IGauge(_gauge).withdraw(_amount);
        IERC20(_token).safeTransfer(msg.sender, _amount);
        return true;
    }

    //withdraw all funds from a gauge
    function withdrawAll(address _token, address _gauge) external returns(bool){
        require(msg.sender == operator, "!auth");
        uint256 amount = balanceOfPool(_gauge);
        withdraw(_token, _gauge, amount);
        return true;
    }

    function claimCrv(address _crv, address _minter, address _gauge, address _to) external returns(uint256){
        require(msg.sender == operator, "!auth");
        
        //get current balance
        uint256 _balance = IERC20(_crv).balanceOf(address(this));
        //try mint
        try ICrvMinter(_minter).mint(_gauge){
            //get difference
            _balance = IERC20(_crv).balanceOf(address(this)) - _balance;

            //only transfer balance that was minted(difference)
            //because difference is checked, lp/gauge tokens can not be affected
            IERC20(_crv).safeTransfer(_to, _balance);

            return _balance;
        }catch{}

        return 0;
    }

    function claimRewards(address _gauge) external returns(bool){
        require(msg.sender == operator, "!auth");
        IGauge(_gauge).claim_rewards();
        return true;
    }

    function balanceOfPool(address _gauge) public view returns (uint256) {
        return IGauge(_gauge).balanceOf(address(this));
    }

    function execute(
        address _to,
        uint256 _value,
        bytes calldata _data
    ) external returns (bool, bytes memory) {
        require(msg.sender == operator,"!auth");

        (bool success, bytes memory result) = _to.call{value:_value}(_data);

        return (success, result);
    }

}

{
  "compilationTarget": {
    "VoterProxy.sol": "VoterProxy"
  },
  "evmVersion": "london",
  "libraries": {},
  "metadata": {
    "bytecodeHash": "ipfs"
  },
  "optimizer": {
    "enabled": true,
    "runs": 200
  },
  "remappings": []
}