organized_contracts/20/200512e1e8ded86b308f847ca8982b3eecf192a8fd02f6f2abf3de08680d5366/contract.json

{
  "language": "Solidity",
  "sources": {
    "contracts/core/PandaPoolCore.sol": {
      "content": "/*\n **                                                                                                                                                              \n **                                                                   dddddddd                                                                                   \n **  PPPPPPPPPPPPPPPPP                                                d::::::d                  DDDDDDDDDDDDD                  AAA                 OOOOOOOOO     \n **  P::::::::::::::::P                                               d::::::d                  D::::::::::::DDD              A:::A              OO:::::::::OO   \n **  P::::::PPPPPP:::::P                                              d::::::d                  D:::::::::::::::DD           A:::::A           OO:::::::::::::OO \n **  PP:::::P     P:::::P                                             d:::::d                   DDD:::::DDDDD:::::D         A:::::::A         O:::::::OOO:::::::O\n **    P::::P     P:::::Paaaaaaaaaaaaa  nnnn  nnnnnnnn        ddddddddd:::::d   aaaaaaaaaaaaa     D:::::D    D:::::D       A:::::::::A        O::::::O   O::::::O\n **    P::::P     P:::::Pa::::::::::::a n:::nn::::::::nn    dd::::::::::::::d   a::::::::::::a    D:::::D     D:::::D     A:::::A:::::A       O:::::O     O:::::O\n **    P::::PPPPPP:::::P aaaaaaaaa:::::an::::::::::::::nn  d::::::::::::::::d   aaaaaaaaa:::::a   D:::::D     D:::::D    A:::::A A:::::A      O:::::O     O:::::O\n **    P:::::::::::::PP           a::::ann:::::::::::::::nd:::::::ddddd:::::d            a::::a   D:::::D     D:::::D   A:::::A   A:::::A     O:::::O     O:::::O\n **    P::::PPPPPPPPP      aaaaaaa:::::a  n:::::nnnn:::::nd::::::d    d:::::d     aaaaaaa:::::a   D:::::D     D:::::D  A:::::A     A:::::A    O:::::O     O:::::O\n **    P::::P            aa::::::::::::a  n::::n    n::::nd:::::d     d:::::d   aa::::::::::::a   D:::::D     D:::::D A:::::AAAAAAAAA:::::A   O:::::O     O:::::O\n **    P::::P           a::::aaaa::::::a  n::::n    n::::nd:::::d     d:::::d  a::::aaaa::::::a   D:::::D     D:::::DA:::::::::::::::::::::A  O:::::O     O:::::O\n **    P::::P          a::::a    a:::::a  n::::n    n::::nd:::::d     d:::::d a::::a    a:::::a   D:::::D    D:::::DA:::::AAAAAAAAAAAAA:::::A O::::::O   O::::::O\n **  PP::::::PP        a::::a    a:::::a  n::::n    n::::nd::::::ddddd::::::dda::::a    a:::::a DDD:::::DDDDD:::::DA:::::A             A:::::AO:::::::OOO:::::::O\n **  P::::::::P        a:::::aaaa::::::a  n::::n    n::::n d:::::::::::::::::da:::::aaaa::::::a D:::::::::::::::DDA:::::A               A:::::AOO:::::::::::::OO \n **  P::::::::P         a::::::::::aa:::a n::::n    n::::n  d:::::::::ddd::::d a::::::::::aa:::aD::::::::::::DDD A:::::A                 A:::::A OO:::::::::OO   \n **  PPPPPPPPPP          aaaaaaaaaa  aaaa nnnnnn    nnnnnn   ddddddddd   ddddd  aaaaaaaaaa  aaaaDDDDDDDDDDDDD   AAAAAAA                   AAAAAAA  OOOOOOOOO     \n **  \n*/\n// SPDX-License-Identifier: MIT\npragma solidity ^0.8.6;\n\nimport \"@openzeppelin/contracts/access/Ownable.sol\";\nimport \"@openzeppelin/contracts/security/ReentrancyGuard.sol\";\nimport \"@openzeppelin/contracts/utils/cryptography/ECDSA.sol\";\nimport \"@openzeppelin/contracts/token/ERC20/IERC20.sol\";\nimport \"@openzeppelin/contracts/token/ERC721/IERC721.sol\";\nimport \"@openzeppelin/contracts/token/ERC721/IERC721Receiver.sol\";\nimport \"@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol\";\n\nimport \"../interfaces/IPandaPool.sol\";\nimport \"../interfaces/IPoolKit.sol\";\n\n/**\n */\n\ncontract PandaPoolCore is Ownable, ReentrancyGuard, IERC721Receiver, IPoolKit, IPandaPool {\n    using SafeERC20 for IERC20;\n\n    struct BuyCommit {\n        bytes32 commit;\n        uint64 block;\n        bool revealed;\n        uint256 amountBuyMax;\n        uint256 deadline;\n    }\n\n    struct RebornCommit {\n        bytes32 commit;\n        uint64 block;\n        bool revealed;\n        uint256 ownerTokenId;\n        uint256 amountFeeMax;\n        uint256 deadline;\n    }\n\n    address immutable public pandaToken;\n    address immutable public pandaNFT;\n    uint256 public minPoolNFTCount = 1000;\n\n    mapping(address => bool) public admins;\n\n    bool public isPoolOpen = true;\n    bool public isCrOpen = true;\n    mapping(uint256 => uint256) public poolNftMap;\n    mapping(address => BuyCommit) public buyCommits;\n    mapping(address => RebornCommit) public rebornCommits;\n    mapping(address => bool) public buyCompensates;\n    mapping(address => bool) public rebornCompensates;\n    uint256 public poolSize = 2000;\n    uint256 public poolIndexBase = 1;\n\n    address public constant ZERO_ADDRESS = address(0);\n    uint256 public constant NFT_TOTAL_SUPPLY = 10000;\n    uint256 public constant FEE_BASE = 10000;\n    uint256 public poolFeeValue = 375;\n    uint256 public treasuryFeeValue = 0;\n\n\n    event Redeem(address indexed recipient, uint256 ownerTokenId, uint256 receiveAmount);\n    event AddLiquidity(address indexed recipient, uint256[] supplyTokens, uint256 amountPayToken, uint256 updateMinPoolNftCount);\n    event RemoveLiquidity(address indexed recipient, uint256[] targetTokens, uint256 amountReceiveToken, uint256 updateMinPoolNftCount);\n    event RemovePoolForUpdate(address indexed recipient, uint256[] targetTokens);\n    event AddPoolForSwap(address indexed recipient, uint256[] supplyTokens);\n    event WithdrawERC20(address recipient, address tokenAddress, uint256 tokenAmount);\n    event WithdrawEther(address recipient, uint256 amount);\n    event CommitOwnerBuy(address indexed sender, bytes32 dataHash, uint64 block);    \n    event CommitOwnerRebron(address indexed sender, bytes32 dataHash, uint64 block,uint256 ownerTokenId);    \n    event OwnerRebornRevealHash(address indexed sender, bytes32 revealHash, uint256 ownerTokenId, uint256 index, uint256 targetIndex);\n    event OwnerBuyRevealHash(address indexed sender, bytes32 revealHash, uint256 index, uint256 targetIndex);\n    event ResetPandaPool(uint256 size, uint256 poolIndexBase);\n    event SwitchEvent(bool poolOpne, bool crOpen);\n    event SetPoolFeeValue(uint256 feeValue);\n    event SetTreasuryFeeValue(uint256 feeValue);\n    event UpdatePandaPool(uint256 updateMinPoolNftCount);\n\n    error OnlyAdminError();\n    error TimeOutError(uint256 deadline, uint256 timestamp);\n    error ZeroAddrError();\n    error PoolCloseError();\n    error NFTOwnerNotMatch(uint tokenId, address expectOwner, address realOwner);\n    error MaxFeeNotMatch(uint256 maxUserFee, uint256 poolNeedFee);\n    error PandaNotEnough(address sender, uint256 balance, uint256 needBalance);\n    error PoolNFTTooMany(uint256 poolNftNum, uint256 upLimit);\n    error MinReceiveNotMatch(uint256 exceptMinReceive, uint256 poolPayFor);\n    error MaxBuyNotMatch(uint256 maxUserPayFor, uint256 poolNeedPayFor);\n    error PoolNotEnoughNFT(uint256 poolBalance, uint256 downLimit);\n    error UserNotEnoughNFT(address user, uint256 userBalance, uint256 needBalance);\n    error PoolIndexNotMatchNFTId(uint256 index, uint256 poolTokeId, uint256 exceptTokenId);\n    error TransferEhterFail(address sender, address receiver, uint256 amount);\n    error AlreadyRevealedError(address sender);\n    error RevealedNotMatchError(bytes32 _hash, bytes32 commit);\n    error RevealHappenEarly(uint256 revealTime, uint256 commitTime);\n    error RevealTooLate(uint256 revealTime, uint256 lateTime);\n    error NotCompensate(address user);\n    error PoolArrayIndexOutOfRange(uint256 index, uint256 size);\n    error CannotWithdrawPanda();\n\n\n    modifier onlyAdmin() {\n        if(!admins[msg.sender] && msg.sender != owner()) {\n            revert OnlyAdminError();\n        }\n        _;\n    }\n\n    modifier ensure(uint deadline) {\n        if(deadline < block.timestamp) {\n            revert TimeOutError(deadline, block.timestamp);\n        }\n        _;\n    }\n\n    modifier notZeroAddr(address addr_) {\n        if(addr_ == ZERO_ADDRESS) {\n            revert ZeroAddrError();\n        }\n        _;\n    }\n\n     modifier poolOpen() {\n        if(!isPoolOpen) {\n            revert PoolCloseError();\n        }\n        _;\n    }\n\n    modifier crOpen() {\n        if(!isCrOpen) {\n            revert PoolCloseError();\n        }\n        _;\n    }\n\n\n    \n\n     /**\n     * @dev Constructor.\n     */\n    constructor(\n        address _pandaToken,\n        address _pandaNft\n    )\n    {\n        pandaToken = _pandaToken;\n        pandaNFT = _pandaNft;\n    }\n\n    function addAdmin(address _admin) external onlyOwner {\n        admins[_admin] = true;\n    }\n\n    function removeAdmin(address _admin) external onlyOwner {\n        admins[_admin] = false;\n    }\n\n    \n//############################ Liquid Functions Start #####################\n\n    /**\n     * @dev redeem NFT, you will receive $PANDA.\n     * @param _ownerTokenId The NFT Id you want to redeem\n     * @param _amountRedeemMin  Less than this value you will not redeem\n     * @param _deadline deadline\n     */\n    function redeem(uint256 _ownerTokenId, uint256 _amountRedeemMin, uint256 _deadline) external override ensure(_deadline) nonReentrant poolOpen {\n        IERC721 _pandaNFT = IERC721(pandaNFT);\n        if (_pandaNFT.ownerOf(_ownerTokenId) != msg.sender) {\n            revert NFTOwnerNotMatch(_ownerTokenId,  msg.sender, _pandaNFT.ownerOf(_ownerTokenId));\n        }\n        \n        uint256 _price = _currentPrice();\n        uint256 feeValue = poolFeeValue + treasuryFeeValue;\n        if (_amountRedeemMin > _price * (FEE_BASE - feeValue) / FEE_BASE) {\n            revert MinReceiveNotMatch(_amountRedeemMin, _price * (FEE_BASE - feeValue) / FEE_BASE);\n        }\n        _pandaNFT.safeTransferFrom(msg.sender, address(this), _ownerTokenId, \"\");\n        \n        IERC20(pandaToken).safeTransfer(msg.sender,  _price * (FEE_BASE - feeValue) / FEE_BASE);\n        _poolPushNft(_ownerTokenId);\n        emit Redeem(msg.sender, _ownerTokenId, _price * (FEE_BASE - feeValue) / FEE_BASE);\n    }\n\n\n    /**\n     * @dev owner addLiquidity.\n     * @param _supplyTokens add these NFTs to pool\n     * @param _amountTokenMax  Above this value owner will not add liquidity\n     * @param _updateMinPoolNftCount update pool min nfts \n     * @param _deadline deadline\n     */\n    function addLiquidity(uint256[] calldata _supplyTokens, uint256 _amountTokenMax, uint256 _updateMinPoolNftCount, uint256 _deadline) external override ensure(_deadline) onlyOwner nonReentrant {\n\n        uint256 _length = _supplyTokens.length;\n        IERC721 _pandaNFT = IERC721(pandaNFT);\n        if(_pandaNFT.balanceOf(msg.sender) < _length) {\n            revert UserNotEnoughNFT(msg.sender, _pandaNFT.balanceOf(msg.sender), _length);\n        }\n\n        IERC20 _pandaToken = IERC20(pandaToken);\n        if (_pandaToken.balanceOf(msg.sender) < _amountTokenMax) {\n            revert PandaNotEnough(msg.sender, _pandaToken.balanceOf(msg.sender), _amountTokenMax);\n        }\n\n        uint256 _price = _currentPrice();\n        uint256 tranTokens;\n        \n        \n        uint256 _iTokenId;\n        for (uint256 i = 0; i < _length; i++) {\n            _iTokenId = _supplyTokens[i];\n            _pandaNFT.safeTransferFrom(msg.sender, address(this), _iTokenId, \"\");\n            tranTokens += _price;\n            _poolPushNft(_iTokenId);\n        }\n        if (_amountTokenMax < tranTokens) {\n            revert MaxBuyNotMatch(_amountTokenMax, tranTokens);\n        }\n        _pandaToken.safeTransferFrom(msg.sender, address(this), tranTokens);\n\n        if (_pandaNFT.balanceOf(address(this)) < _updateMinPoolNftCount) {\n            revert PoolNotEnoughNFT(_pandaNFT.balanceOf(address(this)), _updateMinPoolNftCount);\n        }\n\n        if(minPoolNFTCount != _updateMinPoolNftCount) {\n            minPoolNFTCount = _updateMinPoolNftCount;\n        }\n        emit AddLiquidity(msg.sender, _supplyTokens, tranTokens, _updateMinPoolNftCount);\n    }\n\n    /**\n     * @dev owner removeLiquidity.\n     * @param _targetTokens remove these NFTs from pool\n     * @param _amountTokenMin  Less than this value owner will not remove liquidity\n     * @param _updateMinPoolNftCount update pool min nfts \n     */\n    function removeLiquidity(uint256[] calldata _targetTokens, uint256[] calldata _targetPoolIndexs, uint256 _amountTokenMin, uint256 _updateMinPoolNftCount) external override onlyOwner nonReentrant {\n        uint256 _length = _targetTokens.length;\n        IERC721 _pandaNFT = IERC721(pandaNFT);\n        if (_pandaNFT.balanceOf(address(this)) < _length) {\n            revert PoolNotEnoughNFT(_pandaNFT.balanceOf(address(this)), _length);\n        }\n\n        IERC20 _pandaToken = IERC20(pandaToken);\n        if (_pandaToken.balanceOf(address(this)) < _amountTokenMin) {\n            revert PandaNotEnough(address(this), _pandaToken.balanceOf(address(this)), _amountTokenMin);\n        }\n\n        uint256 _price = _currentPrice();\n        uint256 tranTokens;\n        uint256 _iTargetTokenId;\n        uint256 _iPoolIndex;\n        for (uint256 i = 0; i < _length; i++) {\n            _iTargetTokenId = _targetTokens[i];\n            _iPoolIndex = _targetPoolIndexs[i];\n            _pandaNFT.safeTransferFrom(address(this), msg.sender, _iTargetTokenId, \"\");\n            {\n                if(_getIdByIndex(_iPoolIndex) != _iTargetTokenId) {\n                    revert PoolIndexNotMatchNFTId(_iPoolIndex, _getIdByIndex(_iPoolIndex), _iTargetTokenId);\n                }\n                _poolRemoveNft(_iPoolIndex);\n            }\n            \n            tranTokens += _price;\n        }\n\n        if (_amountTokenMin > tranTokens) {\n            revert MinReceiveNotMatch(_amountTokenMin, tranTokens);\n        }\n        _pandaToken.safeTransfer(msg.sender, tranTokens);\n\n        if(_pandaNFT.balanceOf(address(this)) < _updateMinPoolNftCount) {\n            revert PoolNotEnoughNFT(_pandaNFT.balanceOf(address(this)), _updateMinPoolNftCount);\n        }\n        if(minPoolNFTCount != _updateMinPoolNftCount) {\n            minPoolNFTCount = _updateMinPoolNftCount;\n        }\n\n        emit RemoveLiquidity(msg.sender, _targetTokens, tranTokens, _updateMinPoolNftCount);\n    }\n\n\n    /**\n     * @dev owner removePoolForUpdate.\n     * @param _targetTokens remove these NFTs from pool\n     */\n    function removePoolForUpdate(uint256[] calldata _targetTokens, uint256[] calldata _targetPoolIndexs) external  onlyOwner nonReentrant {\n        uint256 _length = _targetTokens.length;\n        IERC721 _pandaNFT = IERC721(pandaNFT);\n        if (_pandaNFT.balanceOf(address(this)) < _length) {\n            revert PoolNotEnoughNFT(_pandaNFT.balanceOf(address(this)), _length);\n        }\n\n        uint256 _iTargetTokenId;\n        uint256 _iPoolIndex;\n        for (uint256 i = 0; i < _length; i++) {\n            _iTargetTokenId = _targetTokens[i];\n            _iPoolIndex = _targetPoolIndexs[i];\n            _pandaNFT.safeTransferFrom(address(this), msg.sender, _iTargetTokenId, \"\");\n            {\n                if(_getIdByIndex(_iPoolIndex) != _iTargetTokenId) {\n                    revert PoolIndexNotMatchNFTId(_iPoolIndex, _getIdByIndex(_iPoolIndex), _iTargetTokenId);\n                }\n                _poolRemoveNft(_iPoolIndex);\n            }\n        }\n\n        emit RemovePoolForUpdate(msg.sender, _targetTokens);\n    }\n\n\n    /**\n     * @dev owner addPoolforSwap.\n     * @param _supplyTokens add these NFTs to pool\n     */\n    function addPoolForSwap(uint256[] calldata _supplyTokens) external  onlyOwner nonReentrant {\n\n        uint256 _length = _supplyTokens.length;\n        IERC721 _pandaNFT = IERC721(pandaNFT);\n        if(_pandaNFT.balanceOf(msg.sender) < _length) {\n            revert UserNotEnoughNFT(msg.sender, _pandaNFT.balanceOf(msg.sender), _length);\n        }\n      \n        uint256 _iTokenId;\n        for (uint256 i = 0; i < _length; i++) {\n            _iTokenId = _supplyTokens[i];\n            _pandaNFT.safeTransferFrom(msg.sender, address(this), _iTokenId, \"\");\n            _poolPushNft(_iTokenId);\n        }\n       \n        emit AddPoolForSwap(msg.sender, _supplyTokens);\n    }\n\n//########################### Liquid Functions End ####################\n\n\n\n//########################### CR Buy&Reborn Functions Start ####################\n\n    function addCompensate(address user) external onlyOwner {\n        buyCompensates[user] = true;\n    }\n    function removeCompensate(address user) external onlyOwner {\n        buyCompensates[user] = false;\n    }\n\n    function addRebornCompensate(address user) external onlyOwner {\n        rebornCompensates[user] = true;\n    }\n    function removeRebornCompensate(address user) external onlyOwner {\n        rebornCompensates[user] = false;\n    }\n\n    function ownerCBuy(bytes32 _dataHash) external  nonReentrant  {\n        if (!buyCompensates[msg.sender]) {\n            revert NotCompensate(msg.sender);\n        }\n        buyCommits[msg.sender].commit = _dataHash;\n        buyCommits[msg.sender].block = uint64(block.number);\n        buyCommits[msg.sender].revealed = false;\n        emit CommitOwnerBuy(msg.sender, buyCommits[msg.sender].commit, buyCommits[msg.sender].block);\n    }\n\n    function ownerRBuy(bytes32 revealHash) external  nonReentrant crOpen {\n        if (!buyCompensates[msg.sender]) {\n            revert NotCompensate(msg.sender);\n        }\n        buyCompensates[msg.sender] = false;\n        if (buyCommits[msg.sender].revealed) {\n            revert AlreadyRevealedError(msg.sender);\n        }\n        buyCommits[msg.sender].revealed=true;\n        if (getHash(revealHash) != buyCommits[msg.sender].commit) {\n            revert RevealedNotMatchError(getHash(revealHash), buyCommits[msg.sender].commit);\n        }\n\n        if (block.number <= buyCommits[msg.sender].block) {\n            revert RevealHappenEarly(uint64(block.number), buyCommits[msg.sender].block);\n        }\n        \n        if (block.number > buyCommits[msg.sender].block+250) {\n            revert RevealTooLate(block.number, buyCommits[msg.sender].block+250);\n        }\n        //get the hash of the block that happened after they committed\n        bytes32 blockHash = blockhash(buyCommits[msg.sender].block);\n        //hash that with their reveal that so miner shouldn't know and mod it with some max number you want\n        uint256 index = uint256(keccak256(abi.encodePacked(blockHash,revealHash))) % poolSize;\n        uint256 targetIndex = _getIdByIndex(index);\n        IERC721 _pandaNFT = IERC721(pandaNFT);\n        if (_pandaNFT.ownerOf(targetIndex) != address(this)) {\n            revert NFTOwnerNotMatch(targetIndex,  address(this), _pandaNFT.ownerOf(targetIndex));\n        }\n\n        if(_pandaNFT.balanceOf(address(this)) <= minPoolNFTCount) {\n            revert PoolNotEnoughNFT(_pandaNFT.balanceOf(address(this)), minPoolNFTCount);\n        }\n        _pandaNFT.safeTransferFrom(address(this), msg.sender, targetIndex, \"\");\n        _poolRemoveNft(index);\n        emit OwnerBuyRevealHash(msg.sender, revealHash, index, targetIndex);\n    }\n\n    function ownerCReborn(uint256 _ownerTokenId, bytes32 _dataHash) external nonReentrant crOpen {\n        if (!rebornCompensates[msg.sender]) {\n            revert NotCompensate(msg.sender);\n        }\n        rebornCommits[msg.sender].commit = _dataHash;\n        rebornCommits[msg.sender].block = uint64(block.number);\n        rebornCommits[msg.sender].revealed = false;\n        rebornCommits[msg.sender].ownerTokenId = _ownerTokenId;\n        emit CommitOwnerRebron(msg.sender, buyCommits[msg.sender].commit, buyCommits[msg.sender].block, _ownerTokenId);\n    }\n\n\n    function ownerRReborn(bytes32 revealHash) external  nonReentrant crOpen {\n        if (!rebornCompensates[msg.sender]) {\n            revert NotCompensate(msg.sender);\n        }\n        rebornCompensates[msg.sender] = false;\n        if (rebornCommits[msg.sender].revealed) {\n            revert AlreadyRevealedError(msg.sender);\n        }\n        rebornCommits[msg.sender].revealed=true;\n\n        if (getHash(revealHash) != rebornCommits[msg.sender].commit) {\n            revert RevealedNotMatchError(getHash(revealHash), rebornCommits[msg.sender].commit);\n        }\n\n        if (block.number <= rebornCommits[msg.sender].block) {\n            revert RevealHappenEarly(block.number, buyCommits[msg.sender].block);\n        }\n        \n        if (block.number > rebornCommits[msg.sender].block+250) {\n            revert RevealTooLate(block.number, buyCommits[msg.sender].block+250);\n        }\n\n        //get the hash of the block that happened after they committed\n        bytes32 blockHash = blockhash(rebornCommits[msg.sender].block);\n        //hash that with their reveal that so miner shouldn't know and mod it with some max number you want\n        uint256 index = uint256(keccak256(abi.encodePacked(blockHash,revealHash))) % poolSize;\n\n        uint256 targetIndex = _getIdByIndex(index);\n        IERC721 _pandaNFT = IERC721(pandaNFT);\n        if (_pandaNFT.ownerOf(targetIndex) != address(this)) {\n            revert NFTOwnerNotMatch(targetIndex, address(this), _pandaNFT.ownerOf(targetIndex));\n        }\n        \n        _pandaNFT.safeTransferFrom(msg.sender, address(this), rebornCommits[msg.sender].ownerTokenId, \"\");\n        _pandaNFT.safeTransferFrom(address(this), msg.sender, targetIndex, \"\");\n        _poolPushNft(rebornCommits[msg.sender].ownerTokenId);\n        _poolRemoveNft(index);\n        emit OwnerRebornRevealHash(msg.sender, revealHash, rebornCommits[msg.sender].ownerTokenId, index, targetIndex);\n    } \n\n    function getHash(bytes32 data) public view returns(bytes32){\n        return keccak256(abi.encodePacked(address(this), data));\n    }           \n\n//########################### CR Buy&Reborn Functions End ####################\n\n//########################### Pool Utils Functions Start ####################\n\n    function _safeTransferPanda(\n        address to,\n        uint256 value\n    ) external override onlyAdmin {\n        IERC20 _pandaToken = IERC20(pandaToken);\n        _pandaToken.safeTransfer(to, value);\n    }\n\n    function _safeTransferFromPanda(\n        address from,\n        address to,\n        uint256 value\n    ) external override onlyAdmin {\n        IERC20 _pandaToken = IERC20(pandaToken);\n        _pandaToken.safeTransferFrom(from, to, value);\n    }\n\n    function _safeTransferToPanda(\n        address to,\n        uint256 value\n    ) external override onlyAdmin {\n        IERC20 _pandaToken = IERC20(pandaToken);\n        _pandaToken.safeTransfer(to,  value);\n    }\n\n    function _safeTransferFromNFT(\n        address from,\n        address to,\n        uint256 tokenId,\n        bytes calldata data\n    ) external override onlyAdmin {\n        IERC721 _pandaNFT = IERC721(pandaNFT);\n        _pandaNFT.safeTransferFrom(from, to, tokenId, data);\n    }\n\n    function _poolSize() public override view returns(uint256) {\n        return poolSize;\n    }\n\n    function _minPoolNFTCount() public override view returns(uint256) {\n        return minPoolNFTCount;\n    }\n\n    function _poolRemoveNft(uint256 _index) public override onlyAdmin {\n        if (_index >= poolSize) {\n            revert PoolArrayIndexOutOfRange(_index, poolSize);\n        }\n        if (_index == poolSize - 1) {\n            poolNftMap[_index] = 0;\n        } else {\n            poolNftMap[_index] = _getIdByIndex(poolSize - 1);//poolNftMap[poolSize - 1];\n            poolNftMap[poolSize - 1] = 0;\n        }\n        poolSize--;\n    }\n\n    function _poolPushNft(uint256 _value) public override onlyAdmin {\n        poolNftMap[poolSize] = _value;\n        poolSize++;\n    }\n\n    function _getIdByIndex(uint256 _index) public override returns(uint256) {\n        if (_index >= poolSize) {\n            revert PoolArrayIndexOutOfRange(_index, poolSize);\n        }\n        if(poolNftMap[_index] == 0) {\n            poolNftMap[_index] = _index + poolIndexBase;\n            return poolNftMap[_index];\n        } else {\n            return poolNftMap[_index];\n        }\n    }\n\n    /**\n     * @dev calculate current price\n     */\n    function _currentPrice() public view override returns(uint256 _price) {\n        if (IERC721(pandaNFT).balanceOf(address(this)) < NFT_TOTAL_SUPPLY) {\n            _price = IERC20(pandaToken).balanceOf(address(this)) / (NFT_TOTAL_SUPPLY - poolSize);\n        } else {\n            _price = IERC20(pandaToken).balanceOf(address(this));\n        }\n        \n    }   \n\n\n    function _resetPandaPool(uint256 _size, uint256 _poolIndexBase) external onlyOwner {\n        poolSize = _size;\n        poolIndexBase = _poolIndexBase;\n        emit ResetPandaPool(_size, _poolIndexBase);\n    } \n\n    function _updatePandaPoolMin(uint256 _updateMinPoolNftCount) external onlyOwner {\n        minPoolNFTCount = _updateMinPoolNftCount;\n        emit UpdatePandaPool(_updateMinPoolNftCount);\n    } \n\n//########################### Pool Utils Functions End ####################\n\n    /**\n     * @dev setLiquidityClose close or open swap、redeem、buy.\n     * @param _poolOpne true or false\n     * @param _crOpen true or false          \n     */\n    function setSwitchs(bool _poolOpne, bool _crOpen) external onlyOwner {\n        isPoolOpen = _poolOpne;\n        isCrOpen = _crOpen;\n        emit SwitchEvent(_poolOpne, _crOpen);\n    }\n\n    function setPoolFeeValue(uint256 _feeValue) external onlyOwner {\n        poolFeeValue = _feeValue;\n        emit SetPoolFeeValue(_feeValue);\n    }\n\n    function setTreasuryFeeValue(uint256 _feeValue) external onlyOwner {\n        treasuryFeeValue = _feeValue;\n        emit SetTreasuryFeeValue(_feeValue);\n    }\n\n\n    /**\n     * @dev Whenever an {IERC721} `tokenId` token is transferred to this contract via {IERC721-safeTransferFrom}\n     * by `operator` from `from`, this function is called.\n     *\n     * It must return its Solidity selector to confirm the token transfer.\n     * If any other value is returned or the interface is not implemented by the recipient, the transfer will be reverted.\n     *\n     * The selector can be obtained in Solidity with `IERC721Receiver.onERC721Received.selector`.\n     */\n    function onERC721Received(address _operator, address _from, uint256 _tokenId, bytes calldata _data ) pure external override returns (bytes4) {\n        return this.onERC721Received.selector;\n    } \n\n    /**\n     * @dev withdrawERC20  tokens.\n     * @param _recipient recipient\n     * @param _tokenAddress  token\n     * @param _tokenAmount amount\n     */\n    function withdrawERC20(address _recipient, address _tokenAddress, uint256 _tokenAmount) external onlyOwner notZeroAddr(_tokenAddress) {\n        IERC20(_tokenAddress).safeTransfer(_recipient, _tokenAmount);\n        emit WithdrawERC20(_recipient, _tokenAddress, _tokenAmount);\n    }\n    \n\n    /**\n     * @dev withdraw Ether.\n     * @param recipient recipient\n     * @param amount amount\n     */\n    function withdrawEther(address payable recipient, uint256 amount) external onlyOwner {\n        (bool success,) = recipient.call{value:amount}(\"\");\n        if(!success) {\n            revert TransferEhterFail(msg.sender, recipient, amount);\n        }\n        emit WithdrawEther(recipient, amount);\n    }\n\n\n    fallback () external payable {}\n\n    receive () external payable {}\n\n}"
    },
    "@openzeppelin/contracts/access/Ownable.sol": {
      "content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (access/Ownable.sol)\n\npragma solidity ^0.8.0;\n\nimport \"../utils/Context.sol\";\n\n/**\n * @dev Contract module which provides a basic access control mechanism, where\n * there is an account (an owner) that can be granted exclusive access to\n * specific functions.\n *\n * By default, the owner account will be the one that deploys the contract. This\n * can later be changed with {transferOwnership}.\n *\n * This module is used through inheritance. It will make available the modifier\n * `onlyOwner`, which can be applied to your functions to restrict their use to\n * the owner.\n */\nabstract contract Ownable is Context {\n    address private _owner;\n\n    event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);\n\n    /**\n     * @dev Initializes the contract setting the deployer as the initial owner.\n     */\n    constructor() {\n        _transferOwnership(_msgSender());\n    }\n\n    /**\n     * @dev Returns the address of the current owner.\n     */\n    function owner() public view virtual returns (address) {\n        return _owner;\n    }\n\n    /**\n     * @dev Throws if called by any account other than the owner.\n     */\n    modifier onlyOwner() {\n        require(owner() == _msgSender(), \"Ownable: caller is not the owner\");\n        _;\n    }\n\n    /**\n     * @dev Leaves the contract without owner. It will not be possible to call\n     * `onlyOwner` functions anymore. Can only be called by the current owner.\n     *\n     * NOTE: Renouncing ownership will leave the contract without an owner,\n     * thereby removing any functionality that is only available to the owner.\n     */\n    function renounceOwnership() public virtual onlyOwner {\n        _transferOwnership(address(0));\n    }\n\n    /**\n     * @dev Transfers ownership of the contract to a new account (`newOwner`).\n     * Can only be called by the current owner.\n     */\n    function transferOwnership(address newOwner) public virtual onlyOwner {\n        require(newOwner != address(0), \"Ownable: new owner is the zero address\");\n        _transferOwnership(newOwner);\n    }\n\n    /**\n     * @dev Transfers ownership of the contract to a new account (`newOwner`).\n     * Internal function without access restriction.\n     */\n    function _transferOwnership(address newOwner) internal virtual {\n        address oldOwner = _owner;\n        _owner = newOwner;\n        emit OwnershipTransferred(oldOwner, newOwner);\n    }\n}\n"
    },
    "@openzeppelin/contracts/security/ReentrancyGuard.sol": {
      "content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (security/ReentrancyGuard.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev Contract module that helps prevent reentrant calls to a function.\n *\n * Inheriting from `ReentrancyGuard` will make the {nonReentrant} modifier\n * available, which can be applied to functions to make sure there are no nested\n * (reentrant) calls to them.\n *\n * Note that because there is a single `nonReentrant` guard, functions marked as\n * `nonReentrant` may not call one another. This can be worked around by making\n * those functions `private`, and then adding `external` `nonReentrant` entry\n * points to them.\n *\n * TIP: If you would like to learn more about reentrancy and alternative ways\n * to protect against it, check out our blog post\n * https://blog.openzeppelin.com/reentrancy-after-istanbul/[Reentrancy After Istanbul].\n */\nabstract contract ReentrancyGuard {\n    // Booleans are more expensive than uint256 or any type that takes up a full\n    // word because each write operation emits an extra SLOAD to first read the\n    // slot's contents, replace the bits taken up by the boolean, and then write\n    // back. This is the compiler's defense against contract upgrades and\n    // pointer aliasing, and it cannot be disabled.\n\n    // The values being non-zero value makes deployment a bit more expensive,\n    // but in exchange the refund on every call to nonReentrant will be lower in\n    // amount. Since refunds are capped to a percentage of the total\n    // transaction's gas, it is best to keep them low in cases like this one, to\n    // increase the likelihood of the full refund coming into effect.\n    uint256 private constant _NOT_ENTERED = 1;\n    uint256 private constant _ENTERED = 2;\n\n    uint256 private _status;\n\n    constructor() {\n        _status = _NOT_ENTERED;\n    }\n\n    /**\n     * @dev Prevents a contract from calling itself, directly or indirectly.\n     * Calling a `nonReentrant` function from another `nonReentrant`\n     * function is not supported. It is possible to prevent this from happening\n     * by making the `nonReentrant` function external, and making it call a\n     * `private` function that does the actual work.\n     */\n    modifier nonReentrant() {\n        // On the first call to nonReentrant, _notEntered will be true\n        require(_status != _ENTERED, \"ReentrancyGuard: reentrant call\");\n\n        // Any calls to nonReentrant after this point will fail\n        _status = _ENTERED;\n\n        _;\n\n        // By storing the original value once again, a refund is triggered (see\n        // https://eips.ethereum.org/EIPS/eip-2200)\n        _status = _NOT_ENTERED;\n    }\n}\n"
    },
    "@openzeppelin/contracts/utils/cryptography/ECDSA.sol": {
      "content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.5.0) (utils/cryptography/ECDSA.sol)\n\npragma solidity ^0.8.0;\n\nimport \"../Strings.sol\";\n\n/**\n * @dev Elliptic Curve Digital Signature Algorithm (ECDSA) operations.\n *\n * These functions can be used to verify that a message was signed by the holder\n * of the private keys of a given address.\n */\nlibrary ECDSA {\n    enum RecoverError {\n        NoError,\n        InvalidSignature,\n        InvalidSignatureLength,\n        InvalidSignatureS,\n        InvalidSignatureV\n    }\n\n    function _throwError(RecoverError error) private pure {\n        if (error == RecoverError.NoError) {\n            return; // no error: do nothing\n        } else if (error == RecoverError.InvalidSignature) {\n            revert(\"ECDSA: invalid signature\");\n        } else if (error == RecoverError.InvalidSignatureLength) {\n            revert(\"ECDSA: invalid signature length\");\n        } else if (error == RecoverError.InvalidSignatureS) {\n            revert(\"ECDSA: invalid signature 's' value\");\n        } else if (error == RecoverError.InvalidSignatureV) {\n            revert(\"ECDSA: invalid signature 'v' value\");\n        }\n    }\n\n    /**\n     * @dev Returns the address that signed a hashed message (`hash`) with\n     * `signature` or error string. This address can then be used for verification purposes.\n     *\n     * The `ecrecover` EVM opcode allows for malleable (non-unique) signatures:\n     * this function rejects them by requiring the `s` value to be in the lower\n     * half order, and the `v` value to be either 27 or 28.\n     *\n     * IMPORTANT: `hash` _must_ be the result of a hash operation for the\n     * verification to be secure: it is possible to craft signatures that\n     * recover to arbitrary addresses for non-hashed data. A safe way to ensure\n     * this is by receiving a hash of the original message (which may otherwise\n     * be too long), and then calling {toEthSignedMessageHash} on it.\n     *\n     * Documentation for signature generation:\n     * - with https://web3js.readthedocs.io/en/v1.3.4/web3-eth-accounts.html#sign[Web3.js]\n     * - with https://docs.ethers.io/v5/api/signer/#Signer-signMessage[ethers]\n     *\n     * _Available since v4.3._\n     */\n    function tryRecover(bytes32 hash, bytes memory signature) internal pure returns (address, RecoverError) {\n        // Check the signature length\n        // - case 65: r,s,v signature (standard)\n        // - case 64: r,vs signature (cf https://eips.ethereum.org/EIPS/eip-2098) _Available since v4.1._\n        if (signature.length == 65) {\n            bytes32 r;\n            bytes32 s;\n            uint8 v;\n            // ecrecover takes the signature parameters, and the only way to get them\n            // currently is to use assembly.\n            assembly {\n                r := mload(add(signature, 0x20))\n                s := mload(add(signature, 0x40))\n                v := byte(0, mload(add(signature, 0x60)))\n            }\n            return tryRecover(hash, v, r, s);\n        } else if (signature.length == 64) {\n            bytes32 r;\n            bytes32 vs;\n            // ecrecover takes the signature parameters, and the only way to get them\n            // currently is to use assembly.\n            assembly {\n                r := mload(add(signature, 0x20))\n                vs := mload(add(signature, 0x40))\n            }\n            return tryRecover(hash, r, vs);\n        } else {\n            return (address(0), RecoverError.InvalidSignatureLength);\n        }\n    }\n\n    /**\n     * @dev Returns the address that signed a hashed message (`hash`) with\n     * `signature`. This address can then be used for verification purposes.\n     *\n     * The `ecrecover` EVM opcode allows for malleable (non-unique) signatures:\n     * this function rejects them by requiring the `s` value to be in the lower\n     * half order, and the `v` value to be either 27 or 28.\n     *\n     * IMPORTANT: `hash` _must_ be the result of a hash operation for the\n     * verification to be secure: it is possible to craft signatures that\n     * recover to arbitrary addresses for non-hashed data. A safe way to ensure\n     * this is by receiving a hash of the original message (which may otherwise\n     * be too long), and then calling {toEthSignedMessageHash} on it.\n     */\n    function recover(bytes32 hash, bytes memory signature) internal pure returns (address) {\n        (address recovered, RecoverError error) = tryRecover(hash, signature);\n        _throwError(error);\n        return recovered;\n    }\n\n    /**\n     * @dev Overload of {ECDSA-tryRecover} that receives the `r` and `vs` short-signature fields separately.\n     *\n     * See https://eips.ethereum.org/EIPS/eip-2098[EIP-2098 short signatures]\n     *\n     * _Available since v4.3._\n     */\n    function tryRecover(\n        bytes32 hash,\n        bytes32 r,\n        bytes32 vs\n    ) internal pure returns (address, RecoverError) {\n        bytes32 s = vs & bytes32(0x7fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff);\n        uint8 v = uint8((uint256(vs) >> 255) + 27);\n        return tryRecover(hash, v, r, s);\n    }\n\n    /**\n     * @dev Overload of {ECDSA-recover} that receives the `r and `vs` short-signature fields separately.\n     *\n     * _Available since v4.2._\n     */\n    function recover(\n        bytes32 hash,\n        bytes32 r,\n        bytes32 vs\n    ) internal pure returns (address) {\n        (address recovered, RecoverError error) = tryRecover(hash, r, vs);\n        _throwError(error);\n        return recovered;\n    }\n\n    /**\n     * @dev Overload of {ECDSA-tryRecover} that receives the `v`,\n     * `r` and `s` signature fields separately.\n     *\n     * _Available since v4.3._\n     */\n    function tryRecover(\n        bytes32 hash,\n        uint8 v,\n        bytes32 r,\n        bytes32 s\n    ) internal pure returns (address, RecoverError) {\n        // EIP-2 still allows signature malleability for ecrecover(). Remove this possibility and make the signature\n        // unique. Appendix F in the Ethereum Yellow paper (https://ethereum.github.io/yellowpaper/paper.pdf), defines\n        // the valid range for s in (301): 0 < s < secp256k1n ÷ 2 + 1, and for v in (302): v ∈ {27, 28}. Most\n        // signatures from current libraries generate a unique signature with an s-value in the lower half order.\n        //\n        // If your library generates malleable signatures, such as s-values in the upper range, calculate a new s-value\n        // with 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEBAAEDCE6AF48A03BBFD25E8CD0364141 - s1 and flip v from 27 to 28 or\n        // vice versa. If your library also generates signatures with 0/1 for v instead 27/28, add 27 to v to accept\n        // these malleable signatures as well.\n        if (uint256(s) > 0x7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF5D576E7357A4501DDFE92F46681B20A0) {\n            return (address(0), RecoverError.InvalidSignatureS);\n        }\n        if (v != 27 && v != 28) {\n            return (address(0), RecoverError.InvalidSignatureV);\n        }\n\n        // If the signature is valid (and not malleable), return the signer address\n        address signer = ecrecover(hash, v, r, s);\n        if (signer == address(0)) {\n            return (address(0), RecoverError.InvalidSignature);\n        }\n\n        return (signer, RecoverError.NoError);\n    }\n\n    /**\n     * @dev Overload of {ECDSA-recover} that receives the `v`,\n     * `r` and `s` signature fields separately.\n     */\n    function recover(\n        bytes32 hash,\n        uint8 v,\n        bytes32 r,\n        bytes32 s\n    ) internal pure returns (address) {\n        (address recovered, RecoverError error) = tryRecover(hash, v, r, s);\n        _throwError(error);\n        return recovered;\n    }\n\n    /**\n     * @dev Returns an Ethereum Signed Message, created from a `hash`. This\n     * produces hash corresponding to the one signed with the\n     * https://eth.wiki/json-rpc/API#eth_sign[`eth_sign`]\n     * JSON-RPC method as part of EIP-191.\n     *\n     * See {recover}.\n     */\n    function toEthSignedMessageHash(bytes32 hash) internal pure returns (bytes32) {\n        // 32 is the length in bytes of hash,\n        // enforced by the type signature above\n        return keccak256(abi.encodePacked(\"\\x19Ethereum Signed Message:\\n32\", hash));\n    }\n\n    /**\n     * @dev Returns an Ethereum Signed Message, created from `s`. This\n     * produces hash corresponding to the one signed with the\n     * https://eth.wiki/json-rpc/API#eth_sign[`eth_sign`]\n     * JSON-RPC method as part of EIP-191.\n     *\n     * See {recover}.\n     */\n    function toEthSignedMessageHash(bytes memory s) internal pure returns (bytes32) {\n        return keccak256(abi.encodePacked(\"\\x19Ethereum Signed Message:\\n\", Strings.toString(s.length), s));\n    }\n\n    /**\n     * @dev Returns an Ethereum Signed Typed Data, created from a\n     * `domainSeparator` and a `structHash`. This produces hash corresponding\n     * to the one signed with the\n     * https://eips.ethereum.org/EIPS/eip-712[`eth_signTypedData`]\n     * JSON-RPC method as part of EIP-712.\n     *\n     * See {recover}.\n     */\n    function toTypedDataHash(bytes32 domainSeparator, bytes32 structHash) internal pure returns (bytes32) {\n        return keccak256(abi.encodePacked(\"\\x19\\x01\", domainSeparator, structHash));\n    }\n}\n"
    },
    "@openzeppelin/contracts/token/ERC20/IERC20.sol": {
      "content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.6.0) (token/ERC20/IERC20.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev Interface of the ERC20 standard as defined in the EIP.\n */\ninterface IERC20 {\n    /**\n     * @dev Emitted when `value` tokens are moved from one account (`from`) to\n     * another (`to`).\n     *\n     * Note that `value` may be zero.\n     */\n    event Transfer(address indexed from, address indexed to, uint256 value);\n\n    /**\n     * @dev Emitted when the allowance of a `spender` for an `owner` is set by\n     * a call to {approve}. `value` is the new allowance.\n     */\n    event Approval(address indexed owner, address indexed spender, uint256 value);\n\n    /**\n     * @dev Returns the amount of tokens in existence.\n     */\n    function totalSupply() external view returns (uint256);\n\n    /**\n     * @dev Returns the amount of tokens owned by `account`.\n     */\n    function balanceOf(address account) external view returns (uint256);\n\n    /**\n     * @dev Moves `amount` tokens from the caller's account to `to`.\n     *\n     * Returns a boolean value indicating whether the operation succeeded.\n     *\n     * Emits a {Transfer} event.\n     */\n    function transfer(address to, uint256 amount) external returns (bool);\n\n    /**\n     * @dev Returns the remaining number of tokens that `spender` will be\n     * allowed to spend on behalf of `owner` through {transferFrom}. This is\n     * zero by default.\n     *\n     * This value changes when {approve} or {transferFrom} are called.\n     */\n    function allowance(address owner, address spender) external view returns (uint256);\n\n    /**\n     * @dev Sets `amount` as the allowance of `spender` over the caller's tokens.\n     *\n     * Returns a boolean value indicating whether the operation succeeded.\n     *\n     * IMPORTANT: Beware that changing an allowance with this method brings the risk\n     * that someone may use both the old and the new allowance by unfortunate\n     * transaction ordering. One possible solution to mitigate this race\n     * condition is to first reduce the spender's allowance to 0 and set the\n     * desired value afterwards:\n     * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729\n     *\n     * Emits an {Approval} event.\n     */\n    function approve(address spender, uint256 amount) external returns (bool);\n\n    /**\n     * @dev Moves `amount` tokens from `from` to `to` using the\n     * allowance mechanism. `amount` is then deducted from the caller's\n     * allowance.\n     *\n     * Returns a boolean value indicating whether the operation succeeded.\n     *\n     * Emits a {Transfer} event.\n     */\n    function transferFrom(\n        address from,\n        address to,\n        uint256 amount\n    ) external returns (bool);\n}\n"
    },
    "@openzeppelin/contracts/token/ERC721/IERC721.sol": {
      "content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.6.0) (token/ERC721/IERC721.sol)\n\npragma solidity ^0.8.0;\n\nimport \"../../utils/introspection/IERC165.sol\";\n\n/**\n * @dev Required interface of an ERC721 compliant contract.\n */\ninterface IERC721 is IERC165 {\n    /**\n     * @dev Emitted when `tokenId` token is transferred from `from` to `to`.\n     */\n    event Transfer(address indexed from, address indexed to, uint256 indexed tokenId);\n\n    /**\n     * @dev Emitted when `owner` enables `approved` to manage the `tokenId` token.\n     */\n    event Approval(address indexed owner, address indexed approved, uint256 indexed tokenId);\n\n    /**\n     * @dev Emitted when `owner` enables or disables (`approved`) `operator` to manage all of its assets.\n     */\n    event ApprovalForAll(address indexed owner, address indexed operator, bool approved);\n\n    /**\n     * @dev Returns the number of tokens in ``owner``'s account.\n     */\n    function balanceOf(address owner) external view returns (uint256 balance);\n\n    /**\n     * @dev Returns the owner of the `tokenId` token.\n     *\n     * Requirements:\n     *\n     * - `tokenId` must exist.\n     */\n    function ownerOf(uint256 tokenId) external view returns (address owner);\n\n    /**\n     * @dev Safely transfers `tokenId` token from `from` to `to`.\n     *\n     * Requirements:\n     *\n     * - `from` cannot be the zero address.\n     * - `to` cannot be the zero address.\n     * - `tokenId` token must exist and be owned by `from`.\n     * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.\n     * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.\n     *\n     * Emits a {Transfer} event.\n     */\n    function safeTransferFrom(\n        address from,\n        address to,\n        uint256 tokenId,\n        bytes calldata data\n    ) external;\n\n    /**\n     * @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients\n     * are aware of the ERC721 protocol to prevent tokens from being forever locked.\n     *\n     * Requirements:\n     *\n     * - `from` cannot be the zero address.\n     * - `to` cannot be the zero address.\n     * - `tokenId` token must exist and be owned by `from`.\n     * - If the caller is not `from`, it must be have been allowed to move this token by either {approve} or {setApprovalForAll}.\n     * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.\n     *\n     * Emits a {Transfer} event.\n     */\n    function safeTransferFrom(\n        address from,\n        address to,\n        uint256 tokenId\n    ) external;\n\n    /**\n     * @dev Transfers `tokenId` token from `from` to `to`.\n     *\n     * WARNING: Usage of this method is discouraged, use {safeTransferFrom} whenever possible.\n     *\n     * Requirements:\n     *\n     * - `from` cannot be the zero address.\n     * - `to` cannot be the zero address.\n     * - `tokenId` token must be owned by `from`.\n     * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.\n     *\n     * Emits a {Transfer} event.\n     */\n    function transferFrom(\n        address from,\n        address to,\n        uint256 tokenId\n    ) external;\n\n    /**\n     * @dev Gives permission to `to` to transfer `tokenId` token to another account.\n     * The approval is cleared when the token is transferred.\n     *\n     * Only a single account can be approved at a time, so approving the zero address clears previous approvals.\n     *\n     * Requirements:\n     *\n     * - The caller must own the token or be an approved operator.\n     * - `tokenId` must exist.\n     *\n     * Emits an {Approval} event.\n     */\n    function approve(address to, uint256 tokenId) external;\n\n    /**\n     * @dev Approve or remove `operator` as an operator for the caller.\n     * Operators can call {transferFrom} or {safeTransferFrom} for any token owned by the caller.\n     *\n     * Requirements:\n     *\n     * - The `operator` cannot be the caller.\n     *\n     * Emits an {ApprovalForAll} event.\n     */\n    function setApprovalForAll(address operator, bool _approved) external;\n\n    /**\n     * @dev Returns the account approved for `tokenId` token.\n     *\n     * Requirements:\n     *\n     * - `tokenId` must exist.\n     */\n    function getApproved(uint256 tokenId) external view returns (address operator);\n\n    /**\n     * @dev Returns if the `operator` is allowed to manage all of the assets of `owner`.\n     *\n     * See {setApprovalForAll}\n     */\n    function isApprovedForAll(address owner, address operator) external view returns (bool);\n}\n"
    },
    "@openzeppelin/contracts/token/ERC721/IERC721Receiver.sol": {
      "content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.6.0) (token/ERC721/IERC721Receiver.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @title ERC721 token receiver interface\n * @dev Interface for any contract that wants to support safeTransfers\n * from ERC721 asset contracts.\n */\ninterface IERC721Receiver {\n    /**\n     * @dev Whenever an {IERC721} `tokenId` token is transferred to this contract via {IERC721-safeTransferFrom}\n     * by `operator` from `from`, this function is called.\n     *\n     * It must return its Solidity selector to confirm the token transfer.\n     * If any other value is returned or the interface is not implemented by the recipient, the transfer will be reverted.\n     *\n     * The selector can be obtained in Solidity with `IERC721Receiver.onERC721Received.selector`.\n     */\n    function onERC721Received(\n        address operator,\n        address from,\n        uint256 tokenId,\n        bytes calldata data\n    ) external returns (bytes4);\n}\n"
    },
    "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol": {
      "content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (token/ERC20/utils/SafeERC20.sol)\n\npragma solidity ^0.8.0;\n\nimport \"../IERC20.sol\";\nimport \"../../../utils/Address.sol\";\n\n/**\n * @title SafeERC20\n * @dev Wrappers around ERC20 operations that throw on failure (when the token\n * contract returns false). Tokens that return no value (and instead revert or\n * throw on failure) are also supported, non-reverting calls are assumed to be\n * successful.\n * To use this library you can add a `using SafeERC20 for IERC20;` statement to your contract,\n * which allows you to call the safe operations as `token.safeTransfer(...)`, etc.\n */\nlibrary SafeERC20 {\n    using Address for address;\n\n    function safeTransfer(\n        IERC20 token,\n        address to,\n        uint256 value\n    ) internal {\n        _callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value));\n    }\n\n    function safeTransferFrom(\n        IERC20 token,\n        address from,\n        address to,\n        uint256 value\n    ) internal {\n        _callOptionalReturn(token, abi.encodeWithSelector(token.transferFrom.selector, from, to, value));\n    }\n\n    /**\n     * @dev Deprecated. This function has issues similar to the ones found in\n     * {IERC20-approve}, and its usage is discouraged.\n     *\n     * Whenever possible, use {safeIncreaseAllowance} and\n     * {safeDecreaseAllowance} instead.\n     */\n    function safeApprove(\n        IERC20 token,\n        address spender,\n        uint256 value\n    ) internal {\n        // safeApprove should only be called when setting an initial allowance,\n        // or when resetting it to zero. To increase and decrease it, use\n        // 'safeIncreaseAllowance' and 'safeDecreaseAllowance'\n        require(\n            (value == 0) || (token.allowance(address(this), spender) == 0),\n            \"SafeERC20: approve from non-zero to non-zero allowance\"\n        );\n        _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, value));\n    }\n\n    function safeIncreaseAllowance(\n        IERC20 token,\n        address spender,\n        uint256 value\n    ) internal {\n        uint256 newAllowance = token.allowance(address(this), spender) + value;\n        _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));\n    }\n\n    function safeDecreaseAllowance(\n        IERC20 token,\n        address spender,\n        uint256 value\n    ) internal {\n        unchecked {\n            uint256 oldAllowance = token.allowance(address(this), spender);\n            require(oldAllowance >= value, \"SafeERC20: decreased allowance below zero\");\n            uint256 newAllowance = oldAllowance - value;\n            _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));\n        }\n    }\n\n    /**\n     * @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement\n     * on the return value: the return value is optional (but if data is returned, it must not be false).\n     * @param token The token targeted by the call.\n     * @param data The call data (encoded using abi.encode or one of its variants).\n     */\n    function _callOptionalReturn(IERC20 token, bytes memory data) private {\n        // We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since\n        // we're implementing it ourselves. We use {Address.functionCall} to perform this call, which verifies that\n        // the target address contains contract code and also asserts for success in the low-level call.\n\n        bytes memory returndata = address(token).functionCall(data, \"SafeERC20: low-level call failed\");\n        if (returndata.length > 0) {\n            // Return data is optional\n            require(abi.decode(returndata, (bool)), \"SafeERC20: ERC20 operation did not succeed\");\n        }\n    }\n}\n"
    },
    "contracts/interfaces/IPandaPool.sol": {
      "content": "/*\n **                                                                                                                                                              \n **                                                                   dddddddd                                                                                   \n **  PPPPPPPPPPPPPPPPP                                                d::::::d                  DDDDDDDDDDDDD                  AAA                 OOOOOOOOO     \n **  P::::::::::::::::P                                               d::::::d                  D::::::::::::DDD              A:::A              OO:::::::::OO   \n **  P::::::PPPPPP:::::P                                              d::::::d                  D:::::::::::::::DD           A:::::A           OO:::::::::::::OO \n **  PP:::::P     P:::::P                                             d:::::d                   DDD:::::DDDDD:::::D         A:::::::A         O:::::::OOO:::::::O\n **    P::::P     P:::::Paaaaaaaaaaaaa  nnnn  nnnnnnnn        ddddddddd:::::d   aaaaaaaaaaaaa     D:::::D    D:::::D       A:::::::::A        O::::::O   O::::::O\n **    P::::P     P:::::Pa::::::::::::a n:::nn::::::::nn    dd::::::::::::::d   a::::::::::::a    D:::::D     D:::::D     A:::::A:::::A       O:::::O     O:::::O\n **    P::::PPPPPP:::::P aaaaaaaaa:::::an::::::::::::::nn  d::::::::::::::::d   aaaaaaaaa:::::a   D:::::D     D:::::D    A:::::A A:::::A      O:::::O     O:::::O\n **    P:::::::::::::PP           a::::ann:::::::::::::::nd:::::::ddddd:::::d            a::::a   D:::::D     D:::::D   A:::::A   A:::::A     O:::::O     O:::::O\n **    P::::PPPPPPPPP      aaaaaaa:::::a  n:::::nnnn:::::nd::::::d    d:::::d     aaaaaaa:::::a   D:::::D     D:::::D  A:::::A     A:::::A    O:::::O     O:::::O\n **    P::::P            aa::::::::::::a  n::::n    n::::nd:::::d     d:::::d   aa::::::::::::a   D:::::D     D:::::D A:::::AAAAAAAAA:::::A   O:::::O     O:::::O\n **    P::::P           a::::aaaa::::::a  n::::n    n::::nd:::::d     d:::::d  a::::aaaa::::::a   D:::::D     D:::::DA:::::::::::::::::::::A  O:::::O     O:::::O\n **    P::::P          a::::a    a:::::a  n::::n    n::::nd:::::d     d:::::d a::::a    a:::::a   D:::::D    D:::::DA:::::AAAAAAAAAAAAA:::::A O::::::O   O::::::O\n **  PP::::::PP        a::::a    a:::::a  n::::n    n::::nd::::::ddddd::::::dda::::a    a:::::a DDD:::::DDDDD:::::DA:::::A             A:::::AO:::::::OOO:::::::O\n **  P::::::::P        a:::::aaaa::::::a  n::::n    n::::n d:::::::::::::::::da:::::aaaa::::::a D:::::::::::::::DDA:::::A               A:::::AOO:::::::::::::OO \n **  P::::::::P         a::::::::::aa:::a n::::n    n::::n  d:::::::::ddd::::d a::::::::::aa:::aD::::::::::::DDD A:::::A                 A:::::A OO:::::::::OO   \n **  PPPPPPPPPP          aaaaaaaaaa  aaaa nnnnnn    nnnnnn   ddddddddd   ddddd  aaaaaaaaaa  aaaaDDDDDDDDDDDDD   AAAAAAA                   AAAAAAA  OOOOOOOOO     \n **  \n*/\n// SPDX-License-Identifier: MIT\npragma solidity ^0.8.6;\n\ninterface IPandaPool {\n    \n    function redeem(uint256 _ownerTokenId, uint256 _amountRedeemMin, uint256 _deadline) external;\n\n    function addLiquidity(uint256[] calldata _supplyTokens, uint256 _amountTokenMax, uint256 _updateMinPoolNftCount, uint256 _deadline) external;\n\n    function removeLiquidity(uint256[] calldata _targetTokens, uint256[] calldata _targetPoolIndexs, uint256 _amountTokenMin, uint256 _updateMinPoolNftCount) external;\n    \n}\n"
    },
    "contracts/interfaces/IPoolKit.sol": {
      "content": "/*\n **                                                                                                                                                              \n **                                                                   dddddddd                                                                                   \n **  PPPPPPPPPPPPPPPPP                                                d::::::d                  DDDDDDDDDDDDD                  AAA                 OOOOOOOOO     \n **  P::::::::::::::::P                                               d::::::d                  D::::::::::::DDD              A:::A              OO:::::::::OO   \n **  P::::::PPPPPP:::::P                                              d::::::d                  D:::::::::::::::DD           A:::::A           OO:::::::::::::OO \n **  PP:::::P     P:::::P                                             d:::::d                   DDD:::::DDDDD:::::D         A:::::::A         O:::::::OOO:::::::O\n **    P::::P     P:::::Paaaaaaaaaaaaa  nnnn  nnnnnnnn        ddddddddd:::::d   aaaaaaaaaaaaa     D:::::D    D:::::D       A:::::::::A        O::::::O   O::::::O\n **    P::::P     P:::::Pa::::::::::::a n:::nn::::::::nn    dd::::::::::::::d   a::::::::::::a    D:::::D     D:::::D     A:::::A:::::A       O:::::O     O:::::O\n **    P::::PPPPPP:::::P aaaaaaaaa:::::an::::::::::::::nn  d::::::::::::::::d   aaaaaaaaa:::::a   D:::::D     D:::::D    A:::::A A:::::A      O:::::O     O:::::O\n **    P:::::::::::::PP           a::::ann:::::::::::::::nd:::::::ddddd:::::d            a::::a   D:::::D     D:::::D   A:::::A   A:::::A     O:::::O     O:::::O\n **    P::::PPPPPPPPP      aaaaaaa:::::a  n:::::nnnn:::::nd::::::d    d:::::d     aaaaaaa:::::a   D:::::D     D:::::D  A:::::A     A:::::A    O:::::O     O:::::O\n **    P::::P            aa::::::::::::a  n::::n    n::::nd:::::d     d:::::d   aa::::::::::::a   D:::::D     D:::::D A:::::AAAAAAAAA:::::A   O:::::O     O:::::O\n **    P::::P           a::::aaaa::::::a  n::::n    n::::nd:::::d     d:::::d  a::::aaaa::::::a   D:::::D     D:::::DA:::::::::::::::::::::A  O:::::O     O:::::O\n **    P::::P          a::::a    a:::::a  n::::n    n::::nd:::::d     d:::::d a::::a    a:::::a   D:::::D    D:::::DA:::::AAAAAAAAAAAAA:::::A O::::::O   O::::::O\n **  PP::::::PP        a::::a    a:::::a  n::::n    n::::nd::::::ddddd::::::dda::::a    a:::::a DDD:::::DDDDD:::::DA:::::A             A:::::AO:::::::OOO:::::::O\n **  P::::::::P        a:::::aaaa::::::a  n::::n    n::::n d:::::::::::::::::da:::::aaaa::::::a D:::::::::::::::DDA:::::A               A:::::AOO:::::::::::::OO \n **  P::::::::P         a::::::::::aa:::a n::::n    n::::n  d:::::::::ddd::::d a::::::::::aa:::aD::::::::::::DDD A:::::A                 A:::::A OO:::::::::OO   \n **  PPPPPPPPPP          aaaaaaaaaa  aaaa nnnnnn    nnnnnn   ddddddddd   ddddd  aaaaaaaaaa  aaaaDDDDDDDDDDDDD   AAAAAAA                   AAAAAAA  OOOOOOOOO     \n **  \n*/\n// SPDX-License-Identifier: MIT\npragma solidity ^0.8.6;\n\ninterface IPoolKit {\n    function _safeTransferPanda(address to, uint256 value) external;\n    \n    function _safeTransferFromPanda(address from, address to, uint256 value) external;\n\n    function _safeTransferFromNFT(address from, address to, uint256 tokenId, bytes calldata data) external;\n\n    function _poolSize() external view returns(uint256);\n\n    function _poolRemoveNft(uint256 _index) external;\n\n    function _poolPushNft(uint256 _value) external ;\n\n    function _getIdByIndex(uint256 _index) external returns(uint256);\n\n    function _currentPrice() external view returns(uint256 _price);\n\n    function _minPoolNFTCount() external view returns(uint256);\n\n    function _safeTransferToPanda(address to,uint256 value) external ;\n}\n"
    },
    "@openzeppelin/contracts/utils/Context.sol": {
      "content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (utils/Context.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev Provides information about the current execution context, including the\n * sender of the transaction and its data. While these are generally available\n * via msg.sender and msg.data, they should not be accessed in such a direct\n * manner, since when dealing with meta-transactions the account sending and\n * paying for execution may not be the actual sender (as far as an application\n * is concerned).\n *\n * This contract is only required for intermediate, library-like contracts.\n */\nabstract contract Context {\n    function _msgSender() internal view virtual returns (address) {\n        return msg.sender;\n    }\n\n    function _msgData() internal view virtual returns (bytes calldata) {\n        return msg.data;\n    }\n}\n"
    },
    "@openzeppelin/contracts/utils/Strings.sol": {
      "content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (utils/Strings.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev String operations.\n */\nlibrary Strings {\n    bytes16 private constant _HEX_SYMBOLS = \"0123456789abcdef\";\n\n    /**\n     * @dev Converts a `uint256` to its ASCII `string` decimal representation.\n     */\n    function toString(uint256 value) internal pure returns (string memory) {\n        // Inspired by OraclizeAPI's implementation - MIT licence\n        // https://github.com/oraclize/ethereum-api/blob/b42146b063c7d6ee1358846c198246239e9360e8/oraclizeAPI_0.4.25.sol\n\n        if (value == 0) {\n            return \"0\";\n        }\n        uint256 temp = value;\n        uint256 digits;\n        while (temp != 0) {\n            digits++;\n            temp /= 10;\n        }\n        bytes memory buffer = new bytes(digits);\n        while (value != 0) {\n            digits -= 1;\n            buffer[digits] = bytes1(uint8(48 + uint256(value % 10)));\n            value /= 10;\n        }\n        return string(buffer);\n    }\n\n    /**\n     * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation.\n     */\n    function toHexString(uint256 value) internal pure returns (string memory) {\n        if (value == 0) {\n            return \"0x00\";\n        }\n        uint256 temp = value;\n        uint256 length = 0;\n        while (temp != 0) {\n            length++;\n            temp >>= 8;\n        }\n        return toHexString(value, length);\n    }\n\n    /**\n     * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation with fixed length.\n     */\n    function toHexString(uint256 value, uint256 length) internal pure returns (string memory) {\n        bytes memory buffer = new bytes(2 * length + 2);\n        buffer[0] = \"0\";\n        buffer[1] = \"x\";\n        for (uint256 i = 2 * length + 1; i > 1; --i) {\n            buffer[i] = _HEX_SYMBOLS[value & 0xf];\n            value >>= 4;\n        }\n        require(value == 0, \"Strings: hex length insufficient\");\n        return string(buffer);\n    }\n}\n"
    },
    "@openzeppelin/contracts/utils/introspection/IERC165.sol": {
      "content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (utils/introspection/IERC165.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev Interface of the ERC165 standard, as defined in the\n * https://eips.ethereum.org/EIPS/eip-165[EIP].\n *\n * Implementers can declare support of contract interfaces, which can then be\n * queried by others ({ERC165Checker}).\n *\n * For an implementation, see {ERC165}.\n */\ninterface IERC165 {\n    /**\n     * @dev Returns true if this contract implements the interface defined by\n     * `interfaceId`. See the corresponding\n     * https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section]\n     * to learn more about how these ids are created.\n     *\n     * This function call must use less than 30 000 gas.\n     */\n    function supportsInterface(bytes4 interfaceId) external view returns (bool);\n}\n"
    },
    "@openzeppelin/contracts/utils/Address.sol": {
      "content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.5.0) (utils/Address.sol)\n\npragma solidity ^0.8.1;\n\n/**\n * @dev Collection of functions related to the address type\n */\nlibrary Address {\n    /**\n     * @dev Returns true if `account` is a contract.\n     *\n     * [IMPORTANT]\n     * ====\n     * It is unsafe to assume that an address for which this function returns\n     * false is an externally-owned account (EOA) and not a contract.\n     *\n     * Among others, `isContract` will return false for the following\n     * types of addresses:\n     *\n     *  - an externally-owned account\n     *  - a contract in construction\n     *  - an address where a contract will be created\n     *  - an address where a contract lived, but was destroyed\n     * ====\n     *\n     * [IMPORTANT]\n     * ====\n     * You shouldn't rely on `isContract` to protect against flash loan attacks!\n     *\n     * Preventing calls from contracts is highly discouraged. It breaks composability, breaks support for smart wallets\n     * like Gnosis Safe, and does not provide security since it can be circumvented by calling from a contract\n     * constructor.\n     * ====\n     */\n    function isContract(address account) internal view returns (bool) {\n        // This method relies on extcodesize/address.code.length, which returns 0\n        // for contracts in construction, since the code is only stored at the end\n        // of the constructor execution.\n\n        return account.code.length > 0;\n    }\n\n    /**\n     * @dev Replacement for Solidity's `transfer`: sends `amount` wei to\n     * `recipient`, forwarding all available gas and reverting on errors.\n     *\n     * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost\n     * of certain opcodes, possibly making contracts go over the 2300 gas limit\n     * imposed by `transfer`, making them unable to receive funds via\n     * `transfer`. {sendValue} removes this limitation.\n     *\n     * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].\n     *\n     * IMPORTANT: because control is transferred to `recipient`, care must be\n     * taken to not create reentrancy vulnerabilities. Consider using\n     * {ReentrancyGuard} or the\n     * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].\n     */\n    function sendValue(address payable recipient, uint256 amount) internal {\n        require(address(this).balance >= amount, \"Address: insufficient balance\");\n\n        (bool success, ) = recipient.call{value: amount}(\"\");\n        require(success, \"Address: unable to send value, recipient may have reverted\");\n    }\n\n    /**\n     * @dev Performs a Solidity function call using a low level `call`. A\n     * plain `call` is an unsafe replacement for a function call: use this\n     * function instead.\n     *\n     * If `target` reverts with a revert reason, it is bubbled up by this\n     * function (like regular Solidity function calls).\n     *\n     * Returns the raw returned data. To convert to the expected return value,\n     * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].\n     *\n     * Requirements:\n     *\n     * - `target` must be a contract.\n     * - calling `target` with `data` must not revert.\n     *\n     * _Available since v3.1._\n     */\n    function functionCall(address target, bytes memory data) internal returns (bytes memory) {\n        return functionCall(target, data, \"Address: low-level call failed\");\n    }\n\n    /**\n     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with\n     * `errorMessage` as a fallback revert reason when `target` reverts.\n     *\n     * _Available since v3.1._\n     */\n    function functionCall(\n        address target,\n        bytes memory data,\n        string memory errorMessage\n    ) internal returns (bytes memory) {\n        return functionCallWithValue(target, data, 0, errorMessage);\n    }\n\n    /**\n     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],\n     * but also transferring `value` wei to `target`.\n     *\n     * Requirements:\n     *\n     * - the calling contract must have an ETH balance of at least `value`.\n     * - the called Solidity function must be `payable`.\n     *\n     * _Available since v3.1._\n     */\n    function functionCallWithValue(\n        address target,\n        bytes memory data,\n        uint256 value\n    ) internal returns (bytes memory) {\n        return functionCallWithValue(target, data, value, \"Address: low-level call with value failed\");\n    }\n\n    /**\n     * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but\n     * with `errorMessage` as a fallback revert reason when `target` reverts.\n     *\n     * _Available since v3.1._\n     */\n    function functionCallWithValue(\n        address target,\n        bytes memory data,\n        uint256 value,\n        string memory errorMessage\n    ) internal returns (bytes memory) {\n        require(address(this).balance >= value, \"Address: insufficient balance for call\");\n        require(isContract(target), \"Address: call to non-contract\");\n\n        (bool success, bytes memory returndata) = target.call{value: value}(data);\n        return verifyCallResult(success, returndata, errorMessage);\n    }\n\n    /**\n     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],\n     * but performing a static call.\n     *\n     * _Available since v3.3._\n     */\n    function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {\n        return functionStaticCall(target, data, \"Address: low-level static call failed\");\n    }\n\n    /**\n     * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],\n     * but performing a static call.\n     *\n     * _Available since v3.3._\n     */\n    function functionStaticCall(\n        address target,\n        bytes memory data,\n        string memory errorMessage\n    ) internal view returns (bytes memory) {\n        require(isContract(target), \"Address: static call to non-contract\");\n\n        (bool success, bytes memory returndata) = target.staticcall(data);\n        return verifyCallResult(success, returndata, errorMessage);\n    }\n\n    /**\n     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],\n     * but performing a delegate call.\n     *\n     * _Available since v3.4._\n     */\n    function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) {\n        return functionDelegateCall(target, data, \"Address: low-level delegate call failed\");\n    }\n\n    /**\n     * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],\n     * but performing a delegate call.\n     *\n     * _Available since v3.4._\n     */\n    function functionDelegateCall(\n        address target,\n        bytes memory data,\n        string memory errorMessage\n    ) internal returns (bytes memory) {\n        require(isContract(target), \"Address: delegate call to non-contract\");\n\n        (bool success, bytes memory returndata) = target.delegatecall(data);\n        return verifyCallResult(success, returndata, errorMessage);\n    }\n\n    /**\n     * @dev Tool to verifies that a low level call was successful, and revert if it wasn't, either by bubbling the\n     * revert reason using the provided one.\n     *\n     * _Available since v4.3._\n     */\n    function verifyCallResult(\n        bool success,\n        bytes memory returndata,\n        string memory errorMessage\n    ) internal pure returns (bytes memory) {\n        if (success) {\n            return returndata;\n        } else {\n            // Look for revert reason and bubble it up if present\n            if (returndata.length > 0) {\n                // The easiest way to bubble the revert reason is using memory via assembly\n\n                assembly {\n                    let returndata_size := mload(returndata)\n                    revert(add(32, returndata), returndata_size)\n                }\n            } else {\n                revert(errorMessage);\n            }\n        }\n    }\n}\n"
    }
  },
  "settings": {
    "optimizer": {
      "enabled": true,
      "runs": 1000
    },
    "outputSelection": {
      "*": {
        "*": [
          "evm.bytecode",
          "evm.deployedBytecode",
          "devdoc",
          "userdoc",
          "metadata",
          "abi"
        ]
      }
    },
    "libraries": {}
  }
}