{
  "language": "Solidity",
  "sources": {
    "contracts/TestPara.sol": {
      "content": "//SPDX-License-Identifier: None\npragma solidity ^0.8.7;\n\nimport \"@openzeppelin/contracts-upgradeable/access/OwnableUpgradeable.sol\";\nimport \"@openzeppelin/contracts-upgradeable/security/ReentrancyGuardUpgradeable.sol\";\nimport \"@openzeppelin/contracts-upgradeable/security/PausableUpgradeable.sol\";\nimport \"./utils/ERC721AUpgradeable.sol\";\nimport \"./utils/parallabsWhitelist.sol\";\n\ncontract TestPara is\n    ERC721AUpgradeable, \n    OwnableUpgradeable,\n    PausableUpgradeable, \n    Whitelist, \n    ReentrancyGuardUpgradeable\n{\n    struct list {\n        uint startTime;\n        uint endTime;\n        uint remainingTokens;\n        uint purchaseLimit;\n        uint price;\n    }\n\n    string public baseURI;\n    address public designatedSigner;\n    address payable public treasury;\n\n    uint public maxSupply;\n    uint public ownerRemainingTokens;\n\n    list public ogList1;\n    list public ogList2;\n    list public wlList;\n    list public pbList;\n\n    mapping(address => uint) public ogList1MintTracker;\n    mapping(address => uint) public ogList2MintTracker;\n    mapping(address => uint) public wlListMintTracker;\n    mapping(address => uint) public pbListMintTracker;\n\n    modifier checkSupply(uint256 _amount) {\n        require(\n            _amount > 0,\n            \"Invalid amount\"\n        );\n        require(\n            totalSupply() + _amount <= maxSupply - ownerRemainingTokens,\n            \"Exceeding max supply\"\n        );\n        _;\n    }\n\n    /**\n    @notice This is initializer function is used to initialize values of contracts  \n    @param _name Collection name  \n    @param _symbol Collection Symbol  \n    @param _designatedSigner Whitelist signer address of presale buyers  \n    */\n\n    function initialize (string memory _name, string memory _symbol, address _designatedSigner) \n        public \n        initializer \n    {\n        __Ownable_init();\n        __Pausable_init();\n        __ReentrancyGuard_init();\n        __ERC721A_init(_name, _symbol); \n        __ParallabsSigner_init();\n\n        designatedSigner = _designatedSigner;\n        treasury = payable(0xb9c470a28b7500a32f604B365155539153a0f57b);\n        \n        maxSupply = 100;\n        ownerRemainingTokens = 10;\n\n        ogList1.startTime = 1661520600; // August 26, 2022 7 PM IST\n        ogList1.endTime = ogList1.startTime + 600;\n        ogList1.purchaseLimit = 2;\n        ogList1.remainingTokens = 20;\n        ogList1.price = 0.001 ether;\n\n        ogList2.startTime = ogList1.endTime;\n        ogList2.endTime = ogList2.startTime + 600;\n        ogList2.purchaseLimit = 20;\n        ogList2.remainingTokens = ogList1.remainingTokens;\n        ogList2.price = 0.001 ether;\n\n        wlList.startTime = 1661522400; // August 26, 2022 7:30 PM IST\n        wlList.endTime = wlList.startTime + 600;\n        wlList.purchaseLimit = 1;\n        wlList.remainingTokens = 40;\n        wlList.price = 0.002 ether;\n\n        pbList.startTime = wlList.endTime;\n        pbList.endTime = pbList.startTime + 600;\n        pbList.purchaseLimit = 2;\n        pbList.remainingTokens = 90;\n        pbList.price = 0.001 ether;\n    }\n\n    function ownerMint(uint _amount) \n        external \n        onlyOwner\n    {\n        require(_amount + totalSupply() <= maxSupply, \"Exceeding Max Supply\");\n        require(_amount <= ownerRemainingTokens, \"Exceeding Owner Limit\");\n        \n        ownerRemainingTokens -= _amount;\n        _mint(msg.sender, _amount);\n    }\n\n    /**\n    @notice This is function is used to mint tokens for OG Presale  \n    @param _whitelist whitelisted object which contains user address and backend signature for verification  \n    @param _amount amount of tokens to mint in one transaction  \n    */\n\n    function ogList1Mint(whitelist memory _whitelist, uint _amount) \n        external\n        payable\n        nonReentrant\n        whenNotPaused\n        checkSupply(_amount) \n    {\n        require(getSigner(_whitelist) == designatedSigner, \"!Signer\");\n        require(_whitelist.userAddress == msg.sender, \"!Sender\");\n        require(_whitelist.listType == 1, \"!List\");\n        require(\n                block.timestamp > ogList1.startTime && block.timestamp <= ogList1.endTime,\n                \"OG1 Sale Closed\"\n            );\n        require(\n                _amount + ogList1MintTracker[_whitelist.userAddress] <= ogList1.purchaseLimit,\n                \"OG1 Indv. Quota Depleted\"\n            );\n        require(_amount <= ogList1.remainingTokens, \"OG1 Sold Out\");\n        require(msg.value == _amount * ogList1.price, \"OG1 !(Exact Fee)\");\n\n        ogList1MintTracker[_whitelist.userAddress] += _amount;\n        ogList1.remainingTokens -= _amount;\n        ogList2.remainingTokens -= _amount;\n        pbList.remainingTokens -= _amount;\n\n        _mint(_whitelist.userAddress, _amount);\n    } \n\n    /**\n    @notice This function is used to mint tokens for OG Open Sale  \n    @param _whitelist whitelisted object which contains user address and backend signature for verification  \n    @param _amount amount of tokens to mint in one transaction  \n    */\n\n    function ogList2Mint(whitelist memory _whitelist, uint _amount) \n        external\n        payable\n        nonReentrant \n        whenNotPaused\n        checkSupply(_amount) \n    {\n        require(getSigner(_whitelist) == designatedSigner, \"!Signer\");\n        require(_whitelist.userAddress == msg.sender, \"!Sender\");\n        require(_whitelist.listType == 1, \"!List\");\n        require(\n                block.timestamp > ogList2.startTime && block.timestamp <= ogList2.endTime, \n                \"OG2 Sale Closed\"\n            );\n        require(\n                _amount + ogList2MintTracker[_whitelist.userAddress] <= ogList2.purchaseLimit,\n                \"OG2 Indv. Quota Depleted\"\n            );\n        require(_amount <= ogList2.remainingTokens, \"OG2 Sold Out\");\n        require(msg.value == _amount * ogList2.price, \"OG2 !(Exact Fee)\");\n\n        ogList2MintTracker[_whitelist.userAddress] += _amount;\n        ogList2.remainingTokens -= _amount;\n        pbList.remainingTokens -= _amount;\n        \n        _mint(_whitelist.userAddress, _amount);\n    } \n\n    /**\n    @notice This is function is used to mint tokens for WL Presale \n    @param _whitelist whitelisting object which contains user address and backend signature for verification  \n    @param _amount amount of tokens to mint in one transaction  \n    */\n    function wlListMint(whitelist memory _whitelist, uint256 _amount)\n        external\n        payable\n        nonReentrant\n        whenNotPaused\n        checkSupply(_amount)\n    {\n        require(getSigner(_whitelist) == designatedSigner, \"!Signer\");\n        require(_whitelist.userAddress == msg.sender, \"!Sender\");\n        require(_whitelist.listType == 2, \"!List\");\n        require(\n                block.timestamp > wlList.startTime && block.timestamp <= wlList.endTime,\n                \"WL Sale Closed\"\n        );\n        require(\n                _amount + wlListMintTracker[_whitelist.userAddress] <= wlList.purchaseLimit,\n                \"WL Indv. Quota Depleted\"\n        );\n        require(_amount <= wlList.remainingTokens, \"WL Sold Out\");\n        require(msg.value == _amount * wlList.price, \"WL !(Exact Fee)\");\n            \n        wlListMintTracker[_whitelist.userAddress] += _amount;\n        wlList.remainingTokens -= _amount;\n        pbList.remainingTokens -= _amount;\n        \n        _mint(_whitelist.userAddress, _amount);\n    }\n\n    /**\n    @notice This is function is used to mint tokens in public sale    \n    @param _amount amount of tokens to mint in one transaction   \n    */\n    function publicMint(uint256 _amount) \n        external \n        payable \n        nonReentrant \n        whenNotPaused\n        checkSupply(_amount) \n    {\n        require(msg.sender == tx.origin, \"PB !Wallet\");\n        require(\n            block.timestamp > pbList.startTime && block.timestamp <= pbList.endTime,\n            \"PB Sale Closed\"\n        );\n        require(\n            _amount + pbListMintTracker[msg.sender] <= pbList.purchaseLimit,\n            \"PB Indv. Quota Depleted\"\n        );\n        require(_amount <= pbList.remainingTokens, \"PB Sold Out\");\n        require(msg.value == _amount * pbList.price, \"PB !(Exact Fee)\");\n\n        pbListMintTracker[msg.sender] += _amount;\n        pbList.remainingTokens -= _amount;\n        \n        _mint(msg.sender, _amount);\n    }\n    \n    /**\n    @notice The function allows owner to withdraw accumulated funds   \n    */\n    function withdraw() external onlyOwner {\n        require(treasury != address(0), \"Treasury address not set\");\n        treasury.transfer(address(this).balance);\n    }\n\n    /**\n    @notice The function is used to pause/ unpause all mint functions   \n    */\n    function togglePause() external onlyOwner {\n        if (paused()) {\n            _unpause();\n        } else {\n            _pause();\n        }\n    }\n\n    ////////////////\n    ////Setters////\n    //////////////\n    \n    /**\n    @notice This function is used to set base URI  \n    @param baseURI_ New Base URI  \n    */\n    function setBaseURI(string memory baseURI_) public onlyOwner {\n        require(bytes(baseURI_).length > 0, \"Invalid Base URI Provided\");\n        baseURI = baseURI_;\n    }\n\n    function setDesignatedSigner(address _signer) external onlyOwner {\n        require(_signer != address(0), \"Invalid Address Provided\");\n        designatedSigner = _signer;\n    }\n    \n    function setMaxSupply(uint _supply) external onlyOwner {\n        require(totalSupply() < _supply, \"Total Supply Exceeding\");\n        maxSupply = _supply;\n    }\n    \n    function setOwnerCap(uint _cap) external onlyOwner {\n        require(_cap <= maxSupply - totalSupply(), \"Exceeding Max Supply\");\n        ownerRemainingTokens = _cap;\n    }\n    \n    function setTreasury(address _treasury) external onlyOwner {\n        require(_treasury != address(0), \"Invalid address\");\n        treasury = payable(_treasury);\n    }\n\n    function setOG1StartTime(uint _time) external onlyOwner {\n        ogList1.startTime = _time;\n    }\n\n    function setOG1EndTime(uint _time) external onlyOwner {\n        ogList1.endTime = _time;\n    }\n    \n    function setOG1PurchaseLimit(uint _cap) external onlyOwner {\n        ogList1.purchaseLimit = _cap;\n    }\n    \n    function setOG1RemainingTokens(uint _cap) external onlyOwner {\n        ogList1.remainingTokens = _cap;\n    }\n    \n    function setOG1Price(uint _price) external onlyOwner {\n        ogList1.price = _price;\n    }\n    \n    function setOG2StartTime(uint _time) external onlyOwner {\n        ogList2.startTime = _time;\n    }\n\n    function setOG2EndTime(uint _time) external onlyOwner {\n        ogList2.endTime = _time;\n    }\n\n    function setOG2PurchaseLimit(uint _cap) external onlyOwner {\n        ogList2.purchaseLimit = _cap;\n    }\n\n    function setOG2RemainingTokens(uint _cap) external onlyOwner {\n        ogList2.remainingTokens = _cap;\n    }\n    \n    function setOG2Price(uint _price) external onlyOwner {\n        ogList2.price = _price;\n    }\n    \n    function setWLStartTime(uint _time) external onlyOwner {\n        wlList.startTime = _time;\n    }\n\n    function setWLEndTime(uint _time) external onlyOwner {\n        wlList.endTime = _time;\n    }\n\n    function setWLPurchaseLimit(uint _cap) external onlyOwner {\n        wlList.purchaseLimit = _cap;\n    }\n    \n    function setWLRemainingTokens(uint _cap) external onlyOwner {\n        wlList.remainingTokens = _cap;\n    }\n\n    function setWLPrice(uint _price) external onlyOwner {\n        wlList.price = _price;\n    }\n    \n    function setPBStartTime(uint _time) external onlyOwner {\n        pbList.startTime = _time;\n    }\n\n    function setPBEndTime(uint _time) external onlyOwner {\n        pbList.endTime = _time;\n    }\n\n    function setPBPurchaseLimit(uint _cap) external onlyOwner {\n        pbList.purchaseLimit = _cap;\n    }\n    \n    function setPBRemainingTokens(uint _cap) external onlyOwner {\n        pbList.remainingTokens = _cap;\n    }\n\n    function setPBPrice(uint _price) external onlyOwner {\n        pbList.price = _price;\n    }\n\n    /////////////////\n    ////Overrides///\n    ///////////////\n    \n    function _startTokenId() internal view virtual override returns (uint256) {\n        return 1;\n    }\n\n    function _baseURI() internal view virtual override returns (string memory) {\n        return baseURI;\n    }\n}\n"
    },
    "@openzeppelin/contracts-upgradeable/access/OwnableUpgradeable.sol": {
      "content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.7.0) (access/Ownable.sol)\n\npragma solidity ^0.8.0;\n\nimport \"../utils/ContextUpgradeable.sol\";\nimport \"../proxy/utils/Initializable.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 OwnableUpgradeable is Initializable, ContextUpgradeable {\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    function __Ownable_init() internal onlyInitializing {\n        __Ownable_init_unchained();\n    }\n\n    function __Ownable_init_unchained() internal onlyInitializing {\n        _transferOwnership(_msgSender());\n    }\n\n    /**\n     * @dev Throws if called by any account other than the owner.\n     */\n    modifier onlyOwner() {\n        _checkOwner();\n        _;\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 the sender is not the owner.\n     */\n    function _checkOwner() internal view virtual {\n        require(owner() == _msgSender(), \"Ownable: caller is not the owner\");\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    /**\n     * @dev This empty reserved space is put in place to allow future versions to add new\n     * variables without shifting down storage in the inheritance chain.\n     * See https://docs.openzeppelin.com/contracts/4.x/upgradeable#storage_gaps\n     */\n    uint256[49] private __gap;\n}\n"
    },
    "@openzeppelin/contracts-upgradeable/security/ReentrancyGuardUpgradeable.sol": {
      "content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (security/ReentrancyGuard.sol)\n\npragma solidity ^0.8.0;\nimport \"../proxy/utils/Initializable.sol\";\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 ReentrancyGuardUpgradeable is Initializable {\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    function __ReentrancyGuard_init() internal onlyInitializing {\n        __ReentrancyGuard_init_unchained();\n    }\n\n    function __ReentrancyGuard_init_unchained() internal onlyInitializing {\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    /**\n     * @dev This empty reserved space is put in place to allow future versions to add new\n     * variables without shifting down storage in the inheritance chain.\n     * See https://docs.openzeppelin.com/contracts/4.x/upgradeable#storage_gaps\n     */\n    uint256[49] private __gap;\n}\n"
    },
    "@openzeppelin/contracts-upgradeable/security/PausableUpgradeable.sol": {
      "content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.7.0) (security/Pausable.sol)\n\npragma solidity ^0.8.0;\n\nimport \"../utils/ContextUpgradeable.sol\";\nimport \"../proxy/utils/Initializable.sol\";\n\n/**\n * @dev Contract module which allows children to implement an emergency stop\n * mechanism that can be triggered by an authorized account.\n *\n * This module is used through inheritance. It will make available the\n * modifiers `whenNotPaused` and `whenPaused`, which can be applied to\n * the functions of your contract. Note that they will not be pausable by\n * simply including this module, only once the modifiers are put in place.\n */\nabstract contract PausableUpgradeable is Initializable, ContextUpgradeable {\n    /**\n     * @dev Emitted when the pause is triggered by `account`.\n     */\n    event Paused(address account);\n\n    /**\n     * @dev Emitted when the pause is lifted by `account`.\n     */\n    event Unpaused(address account);\n\n    bool private _paused;\n\n    /**\n     * @dev Initializes the contract in unpaused state.\n     */\n    function __Pausable_init() internal onlyInitializing {\n        __Pausable_init_unchained();\n    }\n\n    function __Pausable_init_unchained() internal onlyInitializing {\n        _paused = false;\n    }\n\n    /**\n     * @dev Modifier to make a function callable only when the contract is not paused.\n     *\n     * Requirements:\n     *\n     * - The contract must not be paused.\n     */\n    modifier whenNotPaused() {\n        _requireNotPaused();\n        _;\n    }\n\n    /**\n     * @dev Modifier to make a function callable only when the contract is paused.\n     *\n     * Requirements:\n     *\n     * - The contract must be paused.\n     */\n    modifier whenPaused() {\n        _requirePaused();\n        _;\n    }\n\n    /**\n     * @dev Returns true if the contract is paused, and false otherwise.\n     */\n    function paused() public view virtual returns (bool) {\n        return _paused;\n    }\n\n    /**\n     * @dev Throws if the contract is paused.\n     */\n    function _requireNotPaused() internal view virtual {\n        require(!paused(), \"Pausable: paused\");\n    }\n\n    /**\n     * @dev Throws if the contract is not paused.\n     */\n    function _requirePaused() internal view virtual {\n        require(paused(), \"Pausable: not paused\");\n    }\n\n    /**\n     * @dev Triggers stopped state.\n     *\n     * Requirements:\n     *\n     * - The contract must not be paused.\n     */\n    function _pause() internal virtual whenNotPaused {\n        _paused = true;\n        emit Paused(_msgSender());\n    }\n\n    /**\n     * @dev Returns to normal state.\n     *\n     * Requirements:\n     *\n     * - The contract must be paused.\n     */\n    function _unpause() internal virtual whenPaused {\n        _paused = false;\n        emit Unpaused(_msgSender());\n    }\n\n    /**\n     * @dev This empty reserved space is put in place to allow future versions to add new\n     * variables without shifting down storage in the inheritance chain.\n     * See https://docs.openzeppelin.com/contracts/4.x/upgradeable#storage_gaps\n     */\n    uint256[49] private __gap;\n}\n"
    },
    "contracts/utils/ERC721AUpgradeable.sol": {
      "content": "// SPDX-License-Identifier: MIT\n// Creator: Chiru Labs\n\npragma solidity ^0.8.7;\n\nimport \"@openzeppelin/contracts-upgradeable/token/ERC721/IERC721Upgradeable.sol\";\nimport \"@openzeppelin/contracts-upgradeable/token/ERC721/IERC721ReceiverUpgradeable.sol\";\nimport \"@openzeppelin/contracts-upgradeable/token/ERC721/extensions/IERC721MetadataUpgradeable.sol\";\nimport \"@openzeppelin/contracts-upgradeable/utils/AddressUpgradeable.sol\";\nimport \"@openzeppelin/contracts-upgradeable/utils/ContextUpgradeable.sol\";\nimport \"@openzeppelin/contracts-upgradeable/utils/StringsUpgradeable.sol\";\nimport \"@openzeppelin/contracts-upgradeable/utils/introspection/ERC165Upgradeable.sol\";\nimport \"@openzeppelin/contracts-upgradeable/proxy/utils/Initializable.sol\";\n\n    error ApprovalCallerNotOwnerNorApproved();\n    error ApprovalQueryForNonexistentToken();\n    error ApproveToCaller();\n    error ApprovalToCurrentOwner();\n    error BalanceQueryForZeroAddress();\n    error MintToZeroAddress();\n    error MintZeroQuantity();\n    error OwnerQueryForNonexistentToken();\n    error TransferCallerNotOwnerNorApproved();\n    error TransferFromIncorrectOwner();\n    error TransferToNonERC721ReceiverImplementer();\n    error TransferToZeroAddress();\n    error URIQueryForNonexistentToken();\n\n/**\n * @dev Implementation of https://eips.ethereum.org/EIPS/eip-721[ERC721] Non-Fungible Token Standard, including\n * the Metadata extension. Built to optimize for lower gas during batch mints.\n *\n * Assumes serials are sequentially minted starting at _startTokenId() (defaults to 0, e.g. 0, 1, 2, 3..).\n *\n * Assumes that an owner cannot have more than 2**64 - 1 (max value of uint64) of supply.\n *\n * Assumes that the maximum token id cannot exceed 2**256 - 1 (max value of uint256).\n */\ncontract ERC721AUpgradeable is\nContextUpgradeable,\nERC165Upgradeable,\nIERC721Upgradeable,\nIERC721MetadataUpgradeable\n{\n    using AddressUpgradeable for address;\n    using StringsUpgradeable for uint256;\n\n    // Compiler will pack this into a single 256bit word.\n    struct TokenOwnership {\n        // The address of the owner.\n        address addr;\n        // Keeps track of the start time of ownership with minimal overhead for tokenomics.\n        uint64 startTimestamp;\n        // Whether the token has been burned.\n        bool burned;\n    }\n\n    // Compiler will pack this into a single 256bit word.\n    struct AddressData {\n        // Realistically, 2**64-1 is more than enough.\n        uint64 balance;\n        // Keeps track of mint count with minimal overhead for tokenomics.\n        uint64 numberMinted;\n        // Keeps track of burn count with minimal overhead for tokenomics.\n        uint64 numberBurned;\n        // For miscellaneous variable(s) pertaining to the address\n        // (e.g. number of whitelist mint slots used).\n        // If there are multiple variables, please pack them into a uint64.\n        uint64 aux;\n    }\n\n    // The tokenId of the next token to be minted.\n    uint256 internal _currentIndex;\n\n    // The number of tokens burned.\n    uint256 internal _burnCounter;\n\n    // Token name\n    string private _name;\n\n    // Token symbol\n    string private _symbol;\n\n    // Mapping from token ID to ownership details\n    // An empty struct value does not necessarily mean the token is unowned. See _ownershipOf implementation for details.\n    mapping(uint256 => TokenOwnership) internal _ownerships;\n\n    // Mapping owner address to address data\n    mapping(address => AddressData) private _addressData;\n\n    // Mapping from token ID to approved address\n    mapping(uint256 => address) private _tokenApprovals;\n\n    // Mapping from owner to operator approvals\n    mapping(address => mapping(address => bool)) private _operatorApprovals;\n\n    function __ERC721A_init(string memory name_, string memory symbol_)\n    internal\n    initializer\n    {\n        __Context_init();\n        __ERC165_init();\n\n        _name = name_;\n        _symbol = symbol_;\n        _currentIndex = _startTokenId();\n    }\n\n    /**\n     * To change the starting tokenId, please override this function.\n     */\n    function _startTokenId() internal view virtual returns (uint256) {\n        return 0;\n    }\n\n    /**\n     * @dev Burned tokens are calculated here, use _totalMinted() if you want to count just minted tokens.\n     */\n    function totalSupply() public view returns (uint256) {\n        // Counter underflow is impossible as _burnCounter cannot be incremented\n        // more than _currentIndex - _startTokenId() times\n    unchecked {\n        return _currentIndex - _burnCounter - _startTokenId();\n    }\n    }\n\n    /**\n     * Returns the total amount of tokens minted in the contract.\n     */\n    function _totalMinted() internal view returns (uint256) {\n        // Counter underflow is impossible as _currentIndex does not decrement,\n        // and it is initialized to _startTokenId()\n    unchecked {\n        return _currentIndex - _startTokenId();\n    }\n    }\n\n    /**\n     * @dev See {IERC165-supportsInterface}.\n     */\n    function supportsInterface(bytes4 interfaceId)\n    public\n    view\n    virtual\n    override(ERC165Upgradeable, IERC165Upgradeable)\n    returns (bool)\n    {\n        return\n        interfaceId == type(IERC721Upgradeable).interfaceId ||\n        interfaceId == type(IERC721MetadataUpgradeable).interfaceId ||\n        super.supportsInterface(interfaceId);\n    }\n\n    /**\n     * @dev See {IERC721-balanceOf}.\n     */\n    function balanceOf(address owner) public view override returns (uint256) {\n        if (owner == address(0)) revert BalanceQueryForZeroAddress();\n        return uint256(_addressData[owner].balance);\n    }\n\n    /**\n     * Returns the number of tokens minted by `owner`.\n     */\n    function _numberMinted(address owner) internal view returns (uint256) {\n        return uint256(_addressData[owner].numberMinted);\n    }\n\n    /**\n     * Returns the number of tokens burned by or on behalf of `owner`.\n     */\n    function _numberBurned(address owner) internal view returns (uint256) {\n        return uint256(_addressData[owner].numberBurned);\n    }\n\n    /**\n     * Returns the auxillary data for `owner`. (e.g. number of whitelist mint slots used).\n     */\n    function _getAux(address owner) internal view returns (uint64) {\n        return _addressData[owner].aux;\n    }\n\n    /**\n     * Sets the auxillary data for `owner`. (e.g. number of whitelist mint slots used).\n     * If there are multiple variables, please pack them into a uint64.\n     */\n    function _setAux(address owner, uint64 aux) internal {\n        _addressData[owner].aux = aux;\n    }\n\n    /**\n     * Gas spent here starts off proportional to the maximum mint batch size.\n     * It gradually moves to O(1) as tokens get transferred around in the collection over time.\n     */\n    function _ownershipOf(uint256 tokenId)\n    internal\n    view\n    returns (TokenOwnership memory)\n    {\n        uint256 curr = tokenId;\n\n    unchecked {\n        if (_startTokenId() <= curr && curr < _currentIndex) {\n            TokenOwnership memory ownership = _ownerships[curr];\n            if (!ownership.burned) {\n                if (ownership.addr != address(0)) {\n                    return ownership;\n                }\n                // Invariant:\n                // There will always be an ownership that has an address and is not burned\n                // before an ownership that does not have an address and is not burned.\n                // Hence, curr will not underflow.\n                while (true) {\n                    curr--;\n                    ownership = _ownerships[curr];\n                    if (ownership.addr != address(0)) {\n                        return ownership;\n                    }\n                }\n            }\n        }\n    }\n        revert OwnerQueryForNonexistentToken();\n    }\n\n    /**\n     * @dev See {IERC721-ownerOf}.\n     */\n    function ownerOf(uint256 tokenId) public view override returns (address) {\n        return _ownershipOf(tokenId).addr;\n    }\n\n    /**\n     * @dev See {IERC721Metadata-name}.\n     */\n    function name() public view virtual override returns (string memory) {\n        return _name;\n    }\n\n    /**\n     * @dev See {IERC721Metadata-symbol}.\n     */\n    function symbol() public view virtual override returns (string memory) {\n        return _symbol;\n    }\n\n    /**\n     * @dev See {IERC721Metadata-tokenURI}.\n     */\n    function tokenURI(uint256 tokenId)\n    public\n    view\n    virtual\n    override\n    returns (string memory)\n    {\n        if (!_exists(tokenId)) revert URIQueryForNonexistentToken();\n\n        string memory baseURI = _baseURI();\n        return\n        bytes(baseURI).length != 0\n        ? string(abi.encodePacked(baseURI, tokenId.toString()))\n        : \"\";\n    }\n\n    /**\n     * @dev Base URI for computing {tokenURI}. If set, the resulting URI for each\n     * token will be the concatenation of the `baseURI` and the `tokenId`. Empty\n     * by default, can be overriden in child contracts.\n     */\n    function _baseURI() internal view virtual returns (string memory) {\n        return \"\";\n    }\n\n    /**\n     * @dev See {IERC721-approve}.\n     */\n    function approve(address to, uint256 tokenId) public override {\n        address owner = ERC721AUpgradeable.ownerOf(tokenId);\n        if (to == owner) revert ApprovalToCurrentOwner();\n\n        if (_msgSender() != owner && !isApprovedForAll(owner, _msgSender())) {\n            revert ApprovalCallerNotOwnerNorApproved();\n        }\n\n        _approve(to, tokenId, owner);\n    }\n\n    /**\n     * @dev See {IERC721-getApproved}.\n     */\n    function getApproved(uint256 tokenId)\n    public\n    view\n    override\n    returns (address)\n    {\n        if (!_exists(tokenId)) revert ApprovalQueryForNonexistentToken();\n\n        return _tokenApprovals[tokenId];\n    }\n\n    /**\n     * @dev See {IERC721-setApprovalForAll}.\n     */\n    function setApprovalForAll(address operator, bool approved)\n    public\n    virtual\n    override\n    {\n        if (operator == _msgSender()) revert ApproveToCaller();\n\n        _operatorApprovals[_msgSender()][operator] = approved;\n        emit ApprovalForAll(_msgSender(), operator, approved);\n    }\n\n    /**\n     * @dev See {IERC721-isApprovedForAll}.\n     */\n    function isApprovedForAll(address owner, address operator)\n    public\n    view\n    virtual\n    override\n    returns (bool)\n    {\n        return _operatorApprovals[owner][operator];\n    }\n\n    /**\n     * @dev See {IERC721-transferFrom}.\n     */\n    function transferFrom(\n        address from,\n        address to,\n        uint256 tokenId\n    ) public virtual override {\n        _transfer(from, to, tokenId);\n    }\n\n    /**\n     * @dev See {IERC721-safeTransferFrom}.\n     */\n    function safeTransferFrom(\n        address from,\n        address to,\n        uint256 tokenId\n    ) public virtual override {\n        safeTransferFrom(from, to, tokenId, \"\");\n    }\n\n    /**\n     * @dev See {IERC721-safeTransferFrom}.\n     */\n    function safeTransferFrom(\n        address from,\n        address to,\n        uint256 tokenId,\n        bytes memory _data\n    ) public virtual override {\n        _transfer(from, to, tokenId);\n        if (\n            to.isContract() &&\n            !_checkContractOnERC721Received(from, to, tokenId, _data)\n        ) {\n            revert TransferToNonERC721ReceiverImplementer();\n        }\n    }\n\n    /**\n     * @dev Returns whether `tokenId` exists.\n     *\n     * Tokens can be managed by their owner or approved accounts via {approve} or {setApprovalForAll}.\n     *\n     * Tokens start existing when they are minted (`_mint`),\n     */\n    function _exists(uint256 tokenId) internal view returns (bool) {\n        return\n        _startTokenId() <= tokenId &&\n        tokenId < _currentIndex &&\n        !_ownerships[tokenId].burned;\n    }\n\n    /**\n     * @dev Equivalent to `_safeMint(to, quantity, '')`.\n     */\n    function _safeMint(address to, uint256 quantity) internal {\n        _safeMint(to, quantity, \"\");\n    }\n\n    /**\n     * @dev Safely mints `quantity` tokens and transfers them to `to`.\n     *\n     * Requirements:\n     *\n     * - If `to` refers to a smart contract, it must implement\n     *   {IERC721Receiver-onERC721Received}, which is called for each safe transfer.\n     * - `quantity` must be greater than 0.\n     *\n     * Emits a {Transfer} event.\n     */\n    function _safeMint(\n        address to,\n        uint256 quantity,\n        bytes memory _data\n    ) internal {\n        uint256 startTokenId = _currentIndex;\n        if (to == address(0)) revert MintToZeroAddress();\n        if (quantity == 0) revert MintZeroQuantity();\n\n        _beforeTokenTransfers(address(0), to, startTokenId, quantity);\n\n        // Overflows are incredibly unrealistic.\n        // balance or numberMinted overflow if current value of either + quantity > 1.8e19 (2**64) - 1\n        // updatedIndex overflows if _currentIndex + quantity > 1.2e77 (2**256) - 1\n    unchecked {\n        _addressData[to].balance += uint64(quantity);\n        _addressData[to].numberMinted += uint64(quantity);\n\n        _ownerships[startTokenId].addr = to;\n        _ownerships[startTokenId].startTimestamp = uint64(block.timestamp);\n\n        uint256 updatedIndex = startTokenId;\n        uint256 end = updatedIndex + quantity;\n\n        if (to.isContract()) {\n            do {\n                emit Transfer(address(0), to, updatedIndex);\n                if (\n                    !_checkContractOnERC721Received(\n                    address(0),\n                    to,\n                    updatedIndex++,\n                    _data\n                )\n                ) {\n                    revert TransferToNonERC721ReceiverImplementer();\n                }\n            } while (updatedIndex != end);\n            // Reentrancy protection\n            if (_currentIndex != startTokenId) revert();\n        } else {\n            do {\n                emit Transfer(address(0), to, updatedIndex++);\n            } while (updatedIndex != end);\n        }\n        _currentIndex = updatedIndex;\n    }\n        _afterTokenTransfers(address(0), to, startTokenId, quantity);\n    }\n\n    /**\n     * @dev Mints `quantity` tokens and transfers them to `to`.\n     *\n     * Requirements:\n     *\n     * - `to` cannot be the zero address.\n     * - `quantity` must be greater than 0.\n     *\n     * Emits a {Transfer} event.\n     */\n    function _mint(address to, uint256 quantity) internal {\n        uint256 startTokenId = _currentIndex;\n        if (to == address(0)) revert MintToZeroAddress();\n        if (quantity == 0) revert MintZeroQuantity();\n\n        _beforeTokenTransfers(address(0), to, startTokenId, quantity);\n\n        // Overflows are incredibly unrealistic.\n        // balance or numberMinted overflow if current value of either + quantity > 1.8e19 (2**64) - 1\n        // updatedIndex overflows if _currentIndex + quantity > 1.2e77 (2**256) - 1\n    unchecked {\n        _addressData[to].balance += uint64(quantity);\n        _addressData[to].numberMinted += uint64(quantity);\n\n        _ownerships[startTokenId].addr = to;\n        _ownerships[startTokenId].startTimestamp = uint64(block.timestamp);\n\n        uint256 updatedIndex = startTokenId;\n        uint256 end = updatedIndex + quantity;\n\n        do {\n            emit Transfer(address(0), to, updatedIndex++);\n        } while (updatedIndex != end);\n\n        _currentIndex = updatedIndex;\n    }\n        _afterTokenTransfers(address(0), to, startTokenId, quantity);\n    }\n\n    /**\n     * @dev Transfers `tokenId` from `from` to `to`.\n     *\n     * Requirements:\n     *\n     * - `to` cannot be the zero address.\n     * - `tokenId` token must be owned by `from`.\n     *\n     * Emits a {Transfer} event.\n     */\n    function _transfer(\n        address from,\n        address to,\n        uint256 tokenId\n    ) private {\n        TokenOwnership memory prevOwnership = _ownershipOf(tokenId);\n\n        if (prevOwnership.addr != from) revert TransferFromIncorrectOwner();\n\n        bool isApprovedOrOwner = (_msgSender() == from ||\n        isApprovedForAll(from, _msgSender()) ||\n        getApproved(tokenId) == _msgSender());\n\n        if (!isApprovedOrOwner) revert TransferCallerNotOwnerNorApproved();\n        if (to == address(0)) revert TransferToZeroAddress();\n\n        _beforeTokenTransfers(from, to, tokenId, 1);\n\n        // Clear approvals from the previous owner\n        _approve(address(0), tokenId, from);\n\n        // Underflow of the sender's balance is impossible because we check for\n        // ownership above and the recipient's balance can't realistically overflow.\n        // Counter overflow is incredibly unrealistic as tokenId would have to be 2**256.\n    unchecked {\n        _addressData[from].balance -= 1;\n        _addressData[to].balance += 1;\n\n        TokenOwnership storage currSlot = _ownerships[tokenId];\n        currSlot.addr = to;\n        currSlot.startTimestamp = uint64(block.timestamp);\n\n        // If the ownership slot of tokenId+1 is not explicitly set, that means the transfer initiator owns it.\n        // Set the slot of tokenId+1 explicitly in storage to maintain correctness for ownerOf(tokenId+1) calls.\n        uint256 nextTokenId = tokenId + 1;\n        TokenOwnership storage nextSlot = _ownerships[nextTokenId];\n        if (nextSlot.addr == address(0)) {\n            // This will suffice for checking _exists(nextTokenId),\n            // as a burned slot cannot contain the zero address.\n            if (nextTokenId != _currentIndex) {\n                nextSlot.addr = from;\n                nextSlot.startTimestamp = prevOwnership.startTimestamp;\n            }\n        }\n    }\n\n        emit Transfer(from, to, tokenId);\n        _afterTokenTransfers(from, to, tokenId, 1);\n    }\n\n    /**\n     * @dev Equivalent to `_burn(tokenId, false)`.\n     */\n    function _burn(uint256 tokenId) internal virtual {\n        _burn(tokenId, false);\n    }\n\n    /**\n     * @dev Destroys `tokenId`.\n     * The approval is cleared when the token is burned.\n     *\n     * Requirements:\n     *\n     * - `tokenId` must exist.\n     *\n     * Emits a {Transfer} event.\n     */\n    function _burn(uint256 tokenId, bool approvalCheck) internal virtual {\n        TokenOwnership memory prevOwnership = _ownershipOf(tokenId);\n\n        address from = prevOwnership.addr;\n\n        if (approvalCheck) {\n            bool isApprovedOrOwner = (_msgSender() == from ||\n            isApprovedForAll(from, _msgSender()) ||\n            getApproved(tokenId) == _msgSender());\n\n            if (!isApprovedOrOwner) revert TransferCallerNotOwnerNorApproved();\n        }\n\n        _beforeTokenTransfers(from, address(0), tokenId, 1);\n\n        // Clear approvals from the previous owner\n        _approve(address(0), tokenId, from);\n\n        // Underflow of the sender's balance is impossible because we check for\n        // ownership above and the recipient's balance can't realistically overflow.\n        // Counter overflow is incredibly unrealistic as tokenId would have to be 2**256.\n    unchecked {\n        AddressData storage addressData = _addressData[from];\n        addressData.balance -= 1;\n        addressData.numberBurned += 1;\n\n        // Keep track of who burned the token, and the timestamp of burning.\n        TokenOwnership storage currSlot = _ownerships[tokenId];\n        currSlot.addr = from;\n        currSlot.startTimestamp = uint64(block.timestamp);\n        currSlot.burned = true;\n\n        // If the ownership slot of tokenId+1 is not explicitly set, that means the burn initiator owns it.\n        // Set the slot of tokenId+1 explicitly in storage to maintain correctness for ownerOf(tokenId+1) calls.\n        uint256 nextTokenId = tokenId + 1;\n        TokenOwnership storage nextSlot = _ownerships[nextTokenId];\n        if (nextSlot.addr == address(0)) {\n            // This will suffice for checking _exists(nextTokenId),\n            // as a burned slot cannot contain the zero address.\n            if (nextTokenId != _currentIndex) {\n                nextSlot.addr = from;\n                nextSlot.startTimestamp = prevOwnership.startTimestamp;\n            }\n        }\n    }\n\n        emit Transfer(from, address(0), tokenId);\n        _afterTokenTransfers(from, address(0), tokenId, 1);\n\n        // Overflow not possible, as _burnCounter cannot be exceed _currentIndex times.\n    unchecked {\n        _burnCounter++;\n    }\n    }\n\n    /**\n     * @dev Approve `to` to operate on `tokenId`\n     *\n     * Emits a {Approval} event.\n     */\n    function _approve(\n        address to,\n        uint256 tokenId,\n        address owner\n    ) private {\n        _tokenApprovals[tokenId] = to;\n        emit Approval(owner, to, tokenId);\n    }\n\n    /**\n     * @dev Internal function to invoke {IERC721Receiver-onERC721Received} on a target contract.\n     *\n     * @param from address representing the previous owner of the given token ID\n     * @param to target address that will receive the tokens\n     * @param tokenId uint256 ID of the token to be transferred\n     * @param _data bytes optional data to send along with the call\n     * @return bool whether the call correctly returned the expected magic value\n     */\n    function _checkContractOnERC721Received(\n        address from,\n        address to,\n        uint256 tokenId,\n        bytes memory _data\n    ) private returns (bool) {\n        try\n        IERC721ReceiverUpgradeable(to).onERC721Received(\n            _msgSender(),\n            from,\n            tokenId,\n            _data\n        )\n        returns (bytes4 retval) {\n            return\n            retval ==\n            IERC721ReceiverUpgradeable(to).onERC721Received.selector;\n        } catch (bytes memory reason) {\n            if (reason.length == 0) {\n                revert TransferToNonERC721ReceiverImplementer();\n            } else {\n                assembly {\n                    revert(add(32, reason), mload(reason))\n                }\n            }\n        }\n    }\n\n    /**\n     * @dev Hook that is called before a set of serially-ordered token ids are about to be transferred. This includes minting.\n     * And also called before burning one token.\n     *\n     * startTokenId - the first token id to be transferred\n     * quantity - the amount to be transferred\n     *\n     * Calling conditions:\n     *\n     * - When `from` and `to` are both non-zero, `from`'s `tokenId` will be\n     * transferred to `to`.\n     * - When `from` is zero, `tokenId` will be minted for `to`.\n     * - When `to` is zero, `tokenId` will be burned by `from`.\n     * - `from` and `to` are never both zero.\n     */\n    function _beforeTokenTransfers(\n        address from,\n        address to,\n        uint256 startTokenId,\n        uint256 quantity\n    ) internal virtual {}\n\n    /**\n     * @dev Hook that is called after a set of serially-ordered token ids have been transferred. This includes\n     * minting.\n     * And also called after one token has been burned.\n     *\n     * startTokenId - the first token id to be transferred\n     * quantity - the amount to be transferred\n     *\n     * Calling conditions:\n     *\n     * - When `from` and `to` are both non-zero, `from`'s `tokenId` has been\n     * transferred to `to`.\n     * - When `from` is zero, `tokenId` has been minted for `to`.\n     * - When `to` is zero, `tokenId` has been burned by `from`.\n     * - `from` and `to` are never both zero.\n     */\n    function _afterTokenTransfers(\n        address from,\n        address to,\n        uint256 startTokenId,\n        uint256 quantity\n    ) internal virtual {}\n}\n"
    },
    "contracts/utils/parallabsWhitelist.sol": {
      "content": "//SPDX-License-Identifier: UNLICENSED\npragma solidity ^0.8.7;\n\nimport \"@openzeppelin/contracts-upgradeable/utils/cryptography/draft-EIP712Upgradeable.sol\";\n\ncontract Whitelist is EIP712Upgradeable {\n    string private constant SIGNING_DOMAIN = \"Parallabs\";\n    string private constant SIGNATURE_VERSION = \"1\";\n\n    struct whitelist {\n        address userAddress;\n        uint256 listType;\n        bytes signature;\n    }\n\n    function __ParallabsSigner_init() internal initializer {\n        __EIP712_init(SIGNING_DOMAIN, SIGNATURE_VERSION);   \n    }\n\n    function getSigner(whitelist memory parallabs) public view returns (address) {\n        return _verify(parallabs);\n    }\n\n    /// @notice Returns a hash of the given rarity, prepared using EIP712 typed data hashing rules.\n\n    function _hash(whitelist memory parallabs) internal view returns (bytes32) {\n        return\n        _hashTypedDataV4(\n            keccak256(\n                abi.encode(\n                    keccak256(\n                        \"whitelist(address userAddress,uint256 listType)\"\n                    ),\n                    parallabs.userAddress,\n                    parallabs.listType\n                )\n            )\n        );\n    }\n\n    function _verify(whitelist memory parallabs) internal view returns (address) {\n        bytes32 digest = _hash(parallabs);\n        return ECDSAUpgradeable.recover(digest, parallabs.signature);\n    }\n}\n"
    },
    "@openzeppelin/contracts-upgradeable/utils/ContextUpgradeable.sol": {
      "content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (utils/Context.sol)\n\npragma solidity ^0.8.0;\nimport \"../proxy/utils/Initializable.sol\";\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 ContextUpgradeable is Initializable {\n    function __Context_init() internal onlyInitializing {\n    }\n\n    function __Context_init_unchained() internal onlyInitializing {\n    }\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    /**\n     * @dev This empty reserved space is put in place to allow future versions to add new\n     * variables without shifting down storage in the inheritance chain.\n     * See https://docs.openzeppelin.com/contracts/4.x/upgradeable#storage_gaps\n     */\n    uint256[50] private __gap;\n}\n"
    },
    "@openzeppelin/contracts-upgradeable/proxy/utils/Initializable.sol": {
      "content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.7.0) (proxy/utils/Initializable.sol)\n\npragma solidity ^0.8.2;\n\nimport \"../../utils/AddressUpgradeable.sol\";\n\n/**\n * @dev This is a base contract to aid in writing upgradeable contracts, or any kind of contract that will be deployed\n * behind a proxy. Since proxied contracts do not make use of a constructor, it's common to move constructor logic to an\n * external initializer function, usually called `initialize`. It then becomes necessary to protect this initializer\n * function so it can only be called once. The {initializer} modifier provided by this contract will have this effect.\n *\n * The initialization functions use a version number. Once a version number is used, it is consumed and cannot be\n * reused. This mechanism prevents re-execution of each \"step\" but allows the creation of new initialization steps in\n * case an upgrade adds a module that needs to be initialized.\n *\n * For example:\n *\n * [.hljs-theme-light.nopadding]\n * ```\n * contract MyToken is ERC20Upgradeable {\n *     function initialize() initializer public {\n *         __ERC20_init(\"MyToken\", \"MTK\");\n *     }\n * }\n * contract MyTokenV2 is MyToken, ERC20PermitUpgradeable {\n *     function initializeV2() reinitializer(2) public {\n *         __ERC20Permit_init(\"MyToken\");\n *     }\n * }\n * ```\n *\n * TIP: To avoid leaving the proxy in an uninitialized state, the initializer function should be called as early as\n * possible by providing the encoded function call as the `_data` argument to {ERC1967Proxy-constructor}.\n *\n * CAUTION: When used with inheritance, manual care must be taken to not invoke a parent initializer twice, or to ensure\n * that all initializers are idempotent. This is not verified automatically as constructors are by Solidity.\n *\n * [CAUTION]\n * ====\n * Avoid leaving a contract uninitialized.\n *\n * An uninitialized contract can be taken over by an attacker. This applies to both a proxy and its implementation\n * contract, which may impact the proxy. To prevent the implementation contract from being used, you should invoke\n * the {_disableInitializers} function in the constructor to automatically lock it when it is deployed:\n *\n * [.hljs-theme-light.nopadding]\n * ```\n * /// @custom:oz-upgrades-unsafe-allow constructor\n * constructor() {\n *     _disableInitializers();\n * }\n * ```\n * ====\n */\nabstract contract Initializable {\n    /**\n     * @dev Indicates that the contract has been initialized.\n     * @custom:oz-retyped-from bool\n     */\n    uint8 private _initialized;\n\n    /**\n     * @dev Indicates that the contract is in the process of being initialized.\n     */\n    bool private _initializing;\n\n    /**\n     * @dev Triggered when the contract has been initialized or reinitialized.\n     */\n    event Initialized(uint8 version);\n\n    /**\n     * @dev A modifier that defines a protected initializer function that can be invoked at most once. In its scope,\n     * `onlyInitializing` functions can be used to initialize parent contracts. Equivalent to `reinitializer(1)`.\n     */\n    modifier initializer() {\n        bool isTopLevelCall = !_initializing;\n        require(\n            (isTopLevelCall && _initialized < 1) || (!AddressUpgradeable.isContract(address(this)) && _initialized == 1),\n            \"Initializable: contract is already initialized\"\n        );\n        _initialized = 1;\n        if (isTopLevelCall) {\n            _initializing = true;\n        }\n        _;\n        if (isTopLevelCall) {\n            _initializing = false;\n            emit Initialized(1);\n        }\n    }\n\n    /**\n     * @dev A modifier that defines a protected reinitializer function that can be invoked at most once, and only if the\n     * contract hasn't been initialized to a greater version before. In its scope, `onlyInitializing` functions can be\n     * used to initialize parent contracts.\n     *\n     * `initializer` is equivalent to `reinitializer(1)`, so a reinitializer may be used after the original\n     * initialization step. This is essential to configure modules that are added through upgrades and that require\n     * initialization.\n     *\n     * Note that versions can jump in increments greater than 1; this implies that if multiple reinitializers coexist in\n     * a contract, executing them in the right order is up to the developer or operator.\n     */\n    modifier reinitializer(uint8 version) {\n        require(!_initializing && _initialized < version, \"Initializable: contract is already initialized\");\n        _initialized = version;\n        _initializing = true;\n        _;\n        _initializing = false;\n        emit Initialized(version);\n    }\n\n    /**\n     * @dev Modifier to protect an initialization function so that it can only be invoked by functions with the\n     * {initializer} and {reinitializer} modifiers, directly or indirectly.\n     */\n    modifier onlyInitializing() {\n        require(_initializing, \"Initializable: contract is not initializing\");\n        _;\n    }\n\n    /**\n     * @dev Locks the contract, preventing any future reinitialization. This cannot be part of an initializer call.\n     * Calling this in the constructor of a contract will prevent that contract from being initialized or reinitialized\n     * to any version. It is recommended to use this to lock implementation contracts that are designed to be called\n     * through proxies.\n     */\n    function _disableInitializers() internal virtual {\n        require(!_initializing, \"Initializable: contract is initializing\");\n        if (_initialized < type(uint8).max) {\n            _initialized = type(uint8).max;\n            emit Initialized(type(uint8).max);\n        }\n    }\n}\n"
    },
    "@openzeppelin/contracts-upgradeable/utils/AddressUpgradeable.sol": {
      "content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.7.0) (utils/Address.sol)\n\npragma solidity ^0.8.1;\n\n/**\n * @dev Collection of functions related to the address type\n */\nlibrary AddressUpgradeable {\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 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                /// @solidity memory-safe-assembly\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"
    },
    "@openzeppelin/contracts-upgradeable/token/ERC721/IERC721Upgradeable.sol": {
      "content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.7.0) (token/ERC721/IERC721.sol)\n\npragma solidity ^0.8.0;\n\nimport \"../../utils/introspection/IERC165Upgradeable.sol\";\n\n/**\n * @dev Required interface of an ERC721 compliant contract.\n */\ninterface IERC721Upgradeable is IERC165Upgradeable {\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 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-upgradeable/token/ERC721/IERC721ReceiverUpgradeable.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 IERC721ReceiverUpgradeable {\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-upgradeable/token/ERC721/extensions/IERC721MetadataUpgradeable.sol": {
      "content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (token/ERC721/extensions/IERC721Metadata.sol)\n\npragma solidity ^0.8.0;\n\nimport \"../IERC721Upgradeable.sol\";\n\n/**\n * @title ERC-721 Non-Fungible Token Standard, optional metadata extension\n * @dev See https://eips.ethereum.org/EIPS/eip-721\n */\ninterface IERC721MetadataUpgradeable is IERC721Upgradeable {\n    /**\n     * @dev Returns the token collection name.\n     */\n    function name() external view returns (string memory);\n\n    /**\n     * @dev Returns the token collection symbol.\n     */\n    function symbol() external view returns (string memory);\n\n    /**\n     * @dev Returns the Uniform Resource Identifier (URI) for `tokenId` token.\n     */\n    function tokenURI(uint256 tokenId) external view returns (string memory);\n}\n"
    },
    "@openzeppelin/contracts-upgradeable/utils/StringsUpgradeable.sol": {
      "content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.7.0) (utils/Strings.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev String operations.\n */\nlibrary StringsUpgradeable {\n    bytes16 private constant _HEX_SYMBOLS = \"0123456789abcdef\";\n    uint8 private constant _ADDRESS_LENGTH = 20;\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    /**\n     * @dev Converts an `address` with fixed length of 20 bytes to its not checksummed ASCII `string` hexadecimal representation.\n     */\n    function toHexString(address addr) internal pure returns (string memory) {\n        return toHexString(uint256(uint160(addr)), _ADDRESS_LENGTH);\n    }\n}\n"
    },
    "@openzeppelin/contracts-upgradeable/utils/introspection/ERC165Upgradeable.sol": {
      "content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (utils/introspection/ERC165.sol)\n\npragma solidity ^0.8.0;\n\nimport \"./IERC165Upgradeable.sol\";\nimport \"../../proxy/utils/Initializable.sol\";\n\n/**\n * @dev Implementation of the {IERC165} interface.\n *\n * Contracts that want to implement ERC165 should inherit from this contract and override {supportsInterface} to check\n * for the additional interface id that will be supported. For example:\n *\n * ```solidity\n * function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {\n *     return interfaceId == type(MyInterface).interfaceId || super.supportsInterface(interfaceId);\n * }\n * ```\n *\n * Alternatively, {ERC165Storage} provides an easier to use but more expensive implementation.\n */\nabstract contract ERC165Upgradeable is Initializable, IERC165Upgradeable {\n    function __ERC165_init() internal onlyInitializing {\n    }\n\n    function __ERC165_init_unchained() internal onlyInitializing {\n    }\n    /**\n     * @dev See {IERC165-supportsInterface}.\n     */\n    function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {\n        return interfaceId == type(IERC165Upgradeable).interfaceId;\n    }\n\n    /**\n     * @dev This empty reserved space is put in place to allow future versions to add new\n     * variables without shifting down storage in the inheritance chain.\n     * See https://docs.openzeppelin.com/contracts/4.x/upgradeable#storage_gaps\n     */\n    uint256[50] private __gap;\n}\n"
    },
    "@openzeppelin/contracts-upgradeable/utils/introspection/IERC165Upgradeable.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 IERC165Upgradeable {\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-upgradeable/utils/cryptography/draft-EIP712Upgradeable.sol": {
      "content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (utils/cryptography/draft-EIP712.sol)\n\npragma solidity ^0.8.0;\n\nimport \"./ECDSAUpgradeable.sol\";\nimport \"../../proxy/utils/Initializable.sol\";\n\n/**\n * @dev https://eips.ethereum.org/EIPS/eip-712[EIP 712] is a standard for hashing and signing of typed structured data.\n *\n * The encoding specified in the EIP is very generic, and such a generic implementation in Solidity is not feasible,\n * thus this contract does not implement the encoding itself. Protocols need to implement the type-specific encoding\n * they need in their contracts using a combination of `abi.encode` and `keccak256`.\n *\n * This contract implements the EIP 712 domain separator ({_domainSeparatorV4}) that is used as part of the encoding\n * scheme, and the final step of the encoding to obtain the message digest that is then signed via ECDSA\n * ({_hashTypedDataV4}).\n *\n * The implementation of the domain separator was designed to be as efficient as possible while still properly updating\n * the chain id to protect against replay attacks on an eventual fork of the chain.\n *\n * NOTE: This contract implements the version of the encoding known as \"v4\", as implemented by the JSON RPC method\n * https://docs.metamask.io/guide/signing-data.html[`eth_signTypedDataV4` in MetaMask].\n *\n * _Available since v3.4._\n *\n * @custom:storage-size 52\n */\nabstract contract EIP712Upgradeable is Initializable {\n    /* solhint-disable var-name-mixedcase */\n    bytes32 private _HASHED_NAME;\n    bytes32 private _HASHED_VERSION;\n    bytes32 private constant _TYPE_HASH = keccak256(\"EIP712Domain(string name,string version,uint256 chainId,address verifyingContract)\");\n\n    /* solhint-enable var-name-mixedcase */\n\n    /**\n     * @dev Initializes the domain separator and parameter caches.\n     *\n     * The meaning of `name` and `version` is specified in\n     * https://eips.ethereum.org/EIPS/eip-712#definition-of-domainseparator[EIP 712]:\n     *\n     * - `name`: the user readable name of the signing domain, i.e. the name of the DApp or the protocol.\n     * - `version`: the current major version of the signing domain.\n     *\n     * NOTE: These parameters cannot be changed except through a xref:learn::upgrading-smart-contracts.adoc[smart\n     * contract upgrade].\n     */\n    function __EIP712_init(string memory name, string memory version) internal onlyInitializing {\n        __EIP712_init_unchained(name, version);\n    }\n\n    function __EIP712_init_unchained(string memory name, string memory version) internal onlyInitializing {\n        bytes32 hashedName = keccak256(bytes(name));\n        bytes32 hashedVersion = keccak256(bytes(version));\n        _HASHED_NAME = hashedName;\n        _HASHED_VERSION = hashedVersion;\n    }\n\n    /**\n     * @dev Returns the domain separator for the current chain.\n     */\n    function _domainSeparatorV4() internal view returns (bytes32) {\n        return _buildDomainSeparator(_TYPE_HASH, _EIP712NameHash(), _EIP712VersionHash());\n    }\n\n    function _buildDomainSeparator(\n        bytes32 typeHash,\n        bytes32 nameHash,\n        bytes32 versionHash\n    ) private view returns (bytes32) {\n        return keccak256(abi.encode(typeHash, nameHash, versionHash, block.chainid, address(this)));\n    }\n\n    /**\n     * @dev Given an already https://eips.ethereum.org/EIPS/eip-712#definition-of-hashstruct[hashed struct], this\n     * function returns the hash of the fully encoded EIP712 message for this domain.\n     *\n     * This hash can be used together with {ECDSA-recover} to obtain the signer of a message. For example:\n     *\n     * ```solidity\n     * bytes32 digest = _hashTypedDataV4(keccak256(abi.encode(\n     *     keccak256(\"Mail(address to,string contents)\"),\n     *     mailTo,\n     *     keccak256(bytes(mailContents))\n     * )));\n     * address signer = ECDSA.recover(digest, signature);\n     * ```\n     */\n    function _hashTypedDataV4(bytes32 structHash) internal view virtual returns (bytes32) {\n        return ECDSAUpgradeable.toTypedDataHash(_domainSeparatorV4(), structHash);\n    }\n\n    /**\n     * @dev The hash of the name parameter for the EIP712 domain.\n     *\n     * NOTE: This function reads from storage by default, but can be redefined to return a constant value if gas costs\n     * are a concern.\n     */\n    function _EIP712NameHash() internal virtual view returns (bytes32) {\n        return _HASHED_NAME;\n    }\n\n    /**\n     * @dev The hash of the version parameter for the EIP712 domain.\n     *\n     * NOTE: This function reads from storage by default, but can be redefined to return a constant value if gas costs\n     * are a concern.\n     */\n    function _EIP712VersionHash() internal virtual view returns (bytes32) {\n        return _HASHED_VERSION;\n    }\n\n    /**\n     * @dev This empty reserved space is put in place to allow future versions to add new\n     * variables without shifting down storage in the inheritance chain.\n     * See https://docs.openzeppelin.com/contracts/4.x/upgradeable#storage_gaps\n     */\n    uint256[50] private __gap;\n}\n"
    },
    "@openzeppelin/contracts-upgradeable/utils/cryptography/ECDSAUpgradeable.sol": {
      "content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.7.3) (utils/cryptography/ECDSA.sol)\n\npragma solidity ^0.8.0;\n\nimport \"../StringsUpgradeable.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 ECDSAUpgradeable {\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        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            /// @solidity memory-safe-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 {\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\", StringsUpgradeable.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"
    }
  },
  "settings": {
    "optimizer": {
      "enabled": true,
      "runs": 200
    },
    "outputSelection": {
      "*": {
        "*": [
          "evm.bytecode",
          "evm.deployedBytecode",
          "devdoc",
          "userdoc",
          "metadata",
          "abi"
        ]
      }
    },
    "libraries": {}
  }
}