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

import { Strings } from "@openzeppelin/contracts/utils/Strings.sol";
import { Base64 } from "@openzeppelin/contracts/utils/Base64.sol";
import "./ERC721Base.sol";
import "../tokenManager/interfaces/IPostTransfer.sol";
import "../tokenManager/interfaces/IPostBurn.sol";
import "./interfaces/IERC721GeneralMint.sol";
import "./ERC721GeneralGenesisBase.sol";

/**
 * @title Generative ERC721
 * @author highlight.xyz
 * @notice Generative NFT smart contract
 */
contract ERC721GenerativeGenesis is ERC721GeneralGenesisBase {
    using EnumerableSet for EnumerableSet.AddressSet;

    /**
     * @notice Generative Code URI
     */
    string private _generativeCodeURI;

    /**
     * @notice Initialize the contract
     * @param data Data to initialize the contract
     * @ param creator Creator/owner of contract
     * @ param _contractURI Contract metadata
     * @ param defaultRoyalty Default royalty object for contract (optional)
     * @ param _defaultTokenManager Default token manager for contract (optional)
     * @ param _name Name of token edition
     * @ param _symbol Symbol of the token edition
     * @ param trustedForwarder Trusted minimal forwarder
     * @ param initialMinter Initial minter to register
     * @ param _generativeCodeURI Generative code URI
     * @ param newBaseURI Base URI for contract
     * @ param _limitSupply Initial limit supply
     * @ param useMarketplaceFiltererRegistry Denotes whether to use marketplace filterer registry
     * @param _observability Observability contract address
     */
    function initialize(bytes calldata data, address _observability) external initializer {
        (
            address creator,
            string memory _contractURI,
            IRoyaltyManager.Royalty memory defaultRoyalty,
            address _defaultTokenManager,
            string memory _name,
            string memory _symbol,
            address trustedForwarder,
            address initialMinter,
            string memory _codeURI,
            string memory newBaseURI,
            uint256 _limitSupply,
            bool useMarketplaceFiltererRegistry
        ) = abi.decode(
                data,
                (
                    address,
                    string,
                    IRoyaltyManager.Royalty,
                    address,
                    string,
                    string,
                    address,
                    address,
                    string,
                    string,
                    uint256,
                    bool
                )
            );

        __ERC721URIStorage_init();
        __ERC721Base_initialize(creator, defaultRoyalty, _defaultTokenManager);
        __ERC2771ContextUpgradeable__init__(trustedForwarder);
        __ERC721A_init(_name, _symbol);
        _minters.add(initialMinter);
        contractURI = _contractURI;
        _generativeCodeURI = _codeURI;
        IObservability(_observability).emitGenerativeSeriesDeployed(address(this));
        observability = IObservability(_observability);

        if (bytes(newBaseURI).length > 0) {
            _setBaseURI(newBaseURI);
            // don't emit on observability contract here
        }

        if (_limitSupply > 0) {
            limitSupply = _limitSupply;
            // don't emit on observability contract here
        }
    }

    /**
     * @notice Generative Code URI
     **/
    function generativeCodeUri() external view returns (string memory) {
        return _generativeCodeURI;
    }

    function tokenImage(string memory _owner) external pure returns (string memory) {
        bytes memory owner = bytes(_owner);
        require(owner.length == 42, "Wrong wallet address");
        string
            memory svg = '<svg xmlns="http://www.w3.org/2000/svg" id="0xeE9be9846abB49532a03C05FC27A0e4Dbc84e857" viewBox="0 0 700 700"><style>.a{stroke-width:20;}</style><g class="a" fill="none">';
        uint256 r = 270;
        for (uint256 i = 0; i < 39; ) {
            string memory hexCode;
            if (i == 0) {
                hexCode = string(abi.encodePacked("#00", owner[i + 2]));
            } else {
                hexCode = string(abi.encodePacked("#", owner[i], owner[i + 1], owner[i + 2]));
            }
            svg = string(
                abi.encodePacked(
                    svg,
                    '<circle cx="350" cy="350" r="',
                    Strings.toString(r),
                    '" stroke="',
                    hexCode,
                    '"/>'
                )
            );
            r -= 20;
            i += 3;
        }
        return
            encodeSVG(
                abi.encodePacked(
                    svg,
                    '<circle cx="350" cy="350" r="10" stroke="#',
                    owner[39],
                    owner[40],
                    owner[41],
                    '"/>',
                    "</g></svg>"
                )
            );
    }

    /**
     * @notice Generate token image based on owner wallet address.
     * @param chainId Chain ID contract is deployed to
     * @param tokenId Token ID to get animation for
     * @param walletAddress Wallet address that owns the token
     * @param contractAddress Contract Address
     * @param hash Transaction Hash the token was minted in.
     * @param blockHash Block Hash the token was minted in.
     * @param blockNumber Block Number the token was minted in.
     * @param timestamp Timestamp of the block
     * @param gasPrice Gas price of the transaction in gwei.
     **/
    function tokenAnimation(
        uint256 chainId,
        uint256 tokenId,
        string memory walletAddress,
        string memory contractAddress,
        string memory hash,
        string memory blockHash,
        uint256 blockNumber,
        uint256 timestamp,
        uint256 gasPrice
    ) external view returns (string memory) {
        return
            string(
                abi.encodePacked(
                    _generativeCodeURI,
                    "/index.html?",
                    _constructHashParams(contractAddress, walletAddress, hash, blockHash),
                    _constructIds(tokenId, chainId, blockNumber, timestamp, gasPrice)
                )
            );
    }

    /**
     * @notice Construct Hash params.
     * @param walletAddress Wallet address that owns the token
     * @param contractAddress Contract Address
     * @param hash Transaction Hash the token was minted in.
     * @param blockHash Block Hash the token was minted in.
     **/
    function _constructHashParams(
        string memory contractAddress,
        string memory walletAddress,
        string memory hash,
        string memory blockHash
    ) private pure returns (string memory) {
        return string(abi.encodePacked("a=", contractAddress, "&h=", hash, "&bh=", blockHash, "&wa=", walletAddress));
    }

    /**
     * @notice Construct ID params.
     * @param chainId Chain ID contract is deployed to
     * @param tokenId Token ID to get animation for
     * @param blockNumber Block Number the token was minted in.
     * @param timestamp Timestamp of the block
     * @param gasPrice Gas price of the transaction in gwei.
     **/
    function _constructIds(
        uint256 tokenId,
        uint256 chainId,
        uint256 blockNumber,
        uint256 timestamp,
        uint256 gasPrice
    ) private pure returns (string memory) {
        return
            string(
                abi.encodePacked(
                    "&c=",
                    Strings.toString(chainId),
                    "&tid=",
                    Strings.toString(tokenId),
                    "&bn=",
                    Strings.toString(blockNumber),
                    "&t=",
                    Strings.toString(timestamp),
                    "&gp=",
                    Strings.toString(gasPrice)
                )
            );
    }

    /**
     * @param svg Raw svg to base64 and turn into a data-uri
     * @dev Encodes the argument svg bytes into base64-data uri format
     */
    function encodeSVG(bytes memory svg) private pure returns (string memory) {
        return string(abi.encodePacked("data:image/svg+xml;base64,", Base64.encode(svg)));
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.7.0) (utils/Strings.sol)

pragma solidity ^0.8.0;

/**
 * @dev String operations.
 */
library Strings {
    bytes16 private constant _HEX_SYMBOLS = "0123456789abcdef";
    uint8 private constant _ADDRESS_LENGTH = 20;

    /**
     * @dev Converts a `uint256` to its ASCII `string` decimal representation.
     */
    function toString(uint256 value) internal pure returns (string memory) {
        // Inspired by OraclizeAPI's implementation - MIT licence
        // https://github.com/oraclize/ethereum-api/blob/b42146b063c7d6ee1358846c198246239e9360e8/oraclizeAPI_0.4.25.sol

        if (value == 0) {
            return "0";
        }
        uint256 temp = value;
        uint256 digits;
        while (temp != 0) {
            digits++;
            temp /= 10;
        }
        bytes memory buffer = new bytes(digits);
        while (value != 0) {
            digits -= 1;
            buffer[digits] = bytes1(uint8(48 + uint256(value % 10)));
            value /= 10;
        }
        return string(buffer);
    }

    /**
     * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation.
     */
    function toHexString(uint256 value) internal pure returns (string memory) {
        if (value == 0) {
            return "0x00";
        }
        uint256 temp = value;
        uint256 length = 0;
        while (temp != 0) {
            length++;
            temp >>= 8;
        }
        return toHexString(value, length);
    }

    /**
     * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation with fixed length.
     */
    function toHexString(uint256 value, uint256 length) internal pure returns (string memory) {
        bytes memory buffer = new bytes(2 * length + 2);
        buffer[0] = "0";
        buffer[1] = "x";
        for (uint256 i = 2 * length + 1; i > 1; --i) {
            buffer[i] = _HEX_SYMBOLS[value & 0xf];
            value >>= 4;
        }
        require(value == 0, "Strings: hex length insufficient");
        return string(buffer);
    }

    /**
     * @dev Converts an `address` with fixed length of 20 bytes to its not checksummed ASCII `string` hexadecimal representation.
     */
    function toHexString(address addr) internal pure returns (string memory) {
        return toHexString(uint256(uint160(addr)), _ADDRESS_LENGTH);
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.7.0) (utils/Base64.sol)

pragma solidity ^0.8.0;

/**
 * @dev Provides a set of functions to operate with Base64 strings.
 *
 * _Available since v4.5._
 */
library Base64 {
    /**
     * @dev Base64 Encoding/Decoding Table
     */
    string internal constant _TABLE = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";

    /**
     * @dev Converts a `bytes` to its Bytes64 `string` representation.
     */
    function encode(bytes memory data) internal pure returns (string memory) {
        /**
         * Inspired by Brecht Devos (Brechtpd) implementation - MIT licence
         * https://github.com/Brechtpd/base64/blob/e78d9fd951e7b0977ddca77d92dc85183770daf4/base64.sol
         */
        if (data.length == 0) return "";

        // Loads the table into memory
        string memory table = _TABLE;

        // Encoding takes 3 bytes chunks of binary data from `bytes` data parameter
        // and split into 4 numbers of 6 bits.
        // The final Base64 length should be `bytes` data length multiplied by 4/3 rounded up
        // - `data.length + 2`  -> Round up
        // - `/ 3`              -> Number of 3-bytes chunks
        // - `4 *`              -> 4 characters for each chunk
        string memory result = new string(4 * ((data.length + 2) / 3));

        /// @solidity memory-safe-assembly
        assembly {
            // Prepare the lookup table (skip the first "length" byte)
            let tablePtr := add(table, 1)

            // Prepare result pointer, jump over length
            let resultPtr := add(result, 32)

            // Run over the input, 3 bytes at a time
            for {
                let dataPtr := data
                let endPtr := add(data, mload(data))
            } lt(dataPtr, endPtr) {

            } {
                // Advance 3 bytes
                dataPtr := add(dataPtr, 3)
                let input := mload(dataPtr)

                // To write each character, shift the 3 bytes (18 bits) chunk
                // 4 times in blocks of 6 bits for each character (18, 12, 6, 0)
                // and apply logical AND with 0x3F which is the number of
                // the previous character in the ASCII table prior to the Base64 Table
                // The result is then added to the table to get the character to write,
                // and finally write it in the result pointer but with a left shift
                // of 256 (1 byte) - 8 (1 ASCII char) = 248 bits

                mstore8(resultPtr, mload(add(tablePtr, and(shr(18, input), 0x3F))))
                resultPtr := add(resultPtr, 1) // Advance

                mstore8(resultPtr, mload(add(tablePtr, and(shr(12, input), 0x3F))))
                resultPtr := add(resultPtr, 1) // Advance

                mstore8(resultPtr, mload(add(tablePtr, and(shr(6, input), 0x3F))))
                resultPtr := add(resultPtr, 1) // Advance

                mstore8(resultPtr, mload(add(tablePtr, and(input, 0x3F))))
                resultPtr := add(resultPtr, 1) // Advance
            }

            // When data `bytes` is not exactly 3 bytes long
            // it is padded with `=` characters at the end
            switch mod(mload(data), 3)
            case 1 {
                mstore8(sub(resultPtr, 1), 0x3d)
                mstore8(sub(resultPtr, 2), 0x3d)
            }
            case 2 {
                mstore8(sub(resultPtr, 1), 0x3d)
            }
        }

        return result;
    }
}

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

import "../royaltyManager/interfaces/IRoyaltyManager.sol";
import "../tokenManager/interfaces/ITokenManager.sol";
import "../utils/Ownable.sol";
import "../utils/ERC2981/IERC2981Upgradeable.sol";
import "../utils/ERC165/ERC165CheckerUpgradeable.sol";
import "../metatx/ERC2771ContextUpgradeable.sol";
import "../observability/IObservability.sol";

import "@openzeppelin/contracts/utils/structs/EnumerableSet.sol";
import "@openzeppelin/contracts-upgradeable/access/OwnableUpgradeable.sol";
import "@openzeppelin/contracts-upgradeable/security/ReentrancyGuardUpgradeable.sol";

/**
 * @title Base ERC721
 * @author highlight.xyz
 * @notice Core piece of Highlight NFT contracts (v2)
 */
abstract contract ERC721Base is
    OwnableUpgradeable,
    IERC2981Upgradeable,
    ERC2771ContextUpgradeable,
    ReentrancyGuardUpgradeable
{
    using EnumerableSet for EnumerableSet.AddressSet;
    using ERC165CheckerUpgradeable for address;

    /**
     * @notice Throw when token or royalty manager is invalid
     */
    error InvalidManager();

    /**
     * @notice Throw when token or royalty manager does not exist
     */
    error ManagerDoesNotExist();

    /**
     * @notice Throw when sender is unauthorized to perform action
     */
    error Unauthorized();

    /**
     * @notice Throw when sender is not a minter
     */
    error NotMinter();

    /**
     * @notice Throw when token manager or royalty manager swap is blocked
     */
    error ManagerSwapBlocked();

    /**
     * @notice Throw when token manager or royalty manager remove is blocked
     */
    error ManagerRemoveBlocked();

    /**
     * @notice Throw when setting default or granular royalty is blocked
     */
    error RoyaltySetBlocked();

    /**
     * @notice Throw when royalty BPS is invalid
     */
    error RoyaltyBPSInvalid();

    /**
     * @notice Throw when minter registration is invalid
     */
    error MinterRegistrationInvalid();

    /**
     * @notice Set of minters allowed to mint on contract
     */
    EnumerableSet.AddressSet internal _minters;

    /**
     * @notice Global token/edition manager default
     */
    address public defaultManager;

    /**
     * @notice Token/edition managers per token grouping.
     *      Edition ID if implemented by Editions contract, and token ID if implemented by General contract.
     */
    mapping(uint256 => address) internal _managers;

    /**
     * @notice Default royalty for entire contract
     */
    IRoyaltyManager.Royalty internal _defaultRoyalty;

    /**
     * @notice Royalty per token grouping.
     *      Edition ID if implemented by Editions contract, and token ID if implemented by General contract.
     */
    mapping(uint256 => IRoyaltyManager.Royalty) internal _royalties;

    /**
     * @notice Royalty manager - optional contract that defines the conditions around setting royalties
     */
    address public royaltyManager;

    /**
     * @notice Freezes minting on smart contract forever
     */
    uint8 internal _mintFrozen;

    /**
     * @notice Observability contract
     */
    IObservability public observability;

    /**
     * @notice Emitted when minter is registered or unregistered
     * @param minter Minter that was changed
     * @param registered True if the minter was registered, false if unregistered
     */
    event MinterRegistrationChanged(address indexed minter, bool indexed registered);

    /**
     * @notice Emitted when token managers are set for token/edition ids
     * @param _ids Edition / token ids
     * @param _tokenManagers Token managers to set for tokens / editions
     */
    event GranularTokenManagersSet(uint256[] _ids, address[] _tokenManagers);

    /**
     * @notice Emitted when token managers are removed for token/edition ids
     * @param _ids Edition / token ids to remove token managers for
     */
    event GranularTokenManagersRemoved(uint256[] _ids);

    /**
     * @notice Emitted when default token manager changed
     * @param newDefaultTokenManager New default token manager. Zero address if old one was removed
     */
    event DefaultTokenManagerChanged(address indexed newDefaultTokenManager);

    /**
     * @notice Emitted when default royalty is set
     * @param recipientAddress Royalty recipient
     * @param royaltyPercentageBPS Percentage of sale (in basis points) owed to royalty recipient
     */
    event DefaultRoyaltySet(address indexed recipientAddress, uint16 indexed royaltyPercentageBPS);

    /**
     * @notice Emitted when royalties are set for edition / token ids
     * @param ids Token / edition ids
     * @param _newRoyalties New royalties for each token / edition
     */
    event GranularRoyaltiesSet(uint256[] ids, IRoyaltyManager.Royalty[] _newRoyalties);

    /**
     * @notice Emitted when royalty manager is updated
     * @param newRoyaltyManager New royalty manager. Zero address if old one was removed
     */
    event RoyaltyManagerChanged(address indexed newRoyaltyManager);

    /**
     * @notice Emitted when mints are frozen permanently
     */
    event MintsFrozen();

    /**
     * @notice Restricts calls to minters
     */
    modifier onlyMinter() {
        if (!_minters.contains(_msgSender())) {
            _revert(NotMinter.selector);
        }
        _;
    }

    /**
     * @notice Restricts calls if input royalty bps is over 10000
     */
    modifier royaltyValid(uint16 _royaltyBPS) {
        if (!_royaltyBPSValid(_royaltyBPS)) {
            _revert(RoyaltyBPSInvalid.selector);
        }
        _;
    }

    /**
     * @notice Registers a minter
     * @param minter New minter
     */
    function registerMinter(address minter) external onlyOwner {
        if (!_minters.add(minter)) {
            _revert(MinterRegistrationInvalid.selector);
        }

        emit MinterRegistrationChanged(minter, true);
        observability.emitMinterRegistrationChanged(minter, true);
    }

    /**
     * @notice Unregisters a minter
     * @param minter Minter to unregister
     */
    function unregisterMinter(address minter) external onlyOwner {
        if (!_minters.remove(minter)) {
            _revert(MinterRegistrationInvalid.selector);
        }

        emit MinterRegistrationChanged(minter, false);
        observability.emitMinterRegistrationChanged(minter, false);
    }

    /**
     * @notice Sets granular token managers if current token manager(s) allow it
     * @param _ids Edition / token ids
     * @param _tokenManagers Token managers to set for tokens / editions
     */
    function setGranularTokenManagers(uint256[] calldata _ids, address[] calldata _tokenManagers)
        external
        nonReentrant
    {
        address msgSender = _msgSender();
        address tempOwner = owner();

        uint256 idsLength = _ids.length;
        for (uint256 i = 0; i < idsLength; i++) {
            if (!_isValidTokenManager(_tokenManagers[i])) {
                _revert(InvalidManager.selector);
            }
            address currentTokenManager = tokenManager(_ids[i]);
            if (currentTokenManager == address(0)) {
                if (msgSender != tempOwner) {
                    _revert(Unauthorized.selector);
                }
            } else {
                if (!ITokenManager(currentTokenManager).canSwap(msgSender, _ids[i], _managers[i])) {
                    _revert(ManagerSwapBlocked.selector);
                }
            }

            _managers[_ids[i]] = _tokenManagers[i];
        }

        emit GranularTokenManagersSet(_ids, _tokenManagers);
        observability.emitGranularTokenManagersSet(_ids, _tokenManagers);
    }

    /**
     * @notice Remove granular token managers
     * @param _ids Edition / token ids to remove token managers for
     */
    function removeGranularTokenManagers(uint256[] calldata _ids) external nonReentrant {
        address msgSender = _msgSender();

        uint256 idsLength = _ids.length;
        for (uint256 i = 0; i < idsLength; i++) {
            address currentTokenManager = _managers[_ids[i]];
            if (currentTokenManager == address(0)) {
                _revert(ManagerDoesNotExist.selector);
            }
            if (!ITokenManager(currentTokenManager).canRemoveItself(msgSender, _ids[i])) {
                _revert(ManagerRemoveBlocked.selector);
            }

            _managers[_ids[i]] = address(0);
        }

        emit GranularTokenManagersRemoved(_ids);
        observability.emitGranularTokenManagersRemoved(_ids);
    }

    /**
     * @notice Set default token manager if current token manager allows it
     * @param _defaultTokenManager New default token manager
     */
    function setDefaultTokenManager(address _defaultTokenManager) external nonReentrant {
        if (!_isValidTokenManager(_defaultTokenManager)) {
            _revert(InvalidManager.selector);
        }
        address msgSender = _msgSender();

        address currentTokenManager = defaultManager;
        if (currentTokenManager == address(0)) {
            if (msgSender != owner()) {
                _revert(Unauthorized.selector);
            }
        } else {
            if (!ITokenManager(currentTokenManager).canSwap(msgSender, 0, _defaultTokenManager)) {
                _revert(ManagerSwapBlocked.selector);
            }
        }

        defaultManager = _defaultTokenManager;

        emit DefaultTokenManagerChanged(_defaultTokenManager);
        observability.emitDefaultTokenManagerChanged(_defaultTokenManager);
    }

    /**
     * @notice Removes default token manager if current token manager allows it
     */
    function removeDefaultTokenManager() external nonReentrant {
        address msgSender = _msgSender();

        address currentTokenManager = defaultManager;
        if (currentTokenManager == address(0)) {
            _revert(ManagerDoesNotExist.selector);
        }
        if (!ITokenManager(currentTokenManager).canRemoveItself(msgSender, 0)) {
            _revert(ManagerRemoveBlocked.selector);
        }

        defaultManager = address(0);

        emit DefaultTokenManagerChanged(address(0));
        observability.emitDefaultTokenManagerChanged(address(0));
    }

    /**
     * @notice Sets default royalty if royalty manager allows it
     * @param _royalty New default royalty
     */
    function setDefaultRoyalty(IRoyaltyManager.Royalty calldata _royalty)
        external
        nonReentrant
        royaltyValid(_royalty.royaltyPercentageBPS)
    {
        address msgSender = _msgSender();

        address _royaltyManager = royaltyManager;
        if (_royaltyManager == address(0)) {
            if (msgSender != owner()) {
                _revert(Unauthorized.selector);
            }
        } else {
            if (!IRoyaltyManager(_royaltyManager).canSetDefaultRoyalty(_royalty, msgSender)) {
                _revert(RoyaltySetBlocked.selector);
            }
        }

        _defaultRoyalty = _royalty;

        emit DefaultRoyaltySet(_royalty.recipientAddress, _royalty.royaltyPercentageBPS);
        observability.emitDefaultRoyaltySet(_royalty.recipientAddress, _royalty.royaltyPercentageBPS);
    }

    /**
     * @notice Sets granular royalties (per token-grouping) if royalty manager allows it
     * @param ids Token / edition ids
     * @param _newRoyalties New royalties for each token / edition
     */
    function setGranularRoyalties(uint256[] calldata ids, IRoyaltyManager.Royalty[] calldata _newRoyalties)
        external
        nonReentrant
    {
        address msgSender = _msgSender();
        address tempOwner = owner();

        address _royaltyManager = royaltyManager;
        uint256 idsLength = ids.length;
        if (_royaltyManager == address(0)) {
            if (msgSender != tempOwner) {
                _revert(Unauthorized.selector);
            }

            for (uint256 i = 0; i < idsLength; i++) {
                if (!_royaltyBPSValid(_newRoyalties[i].royaltyPercentageBPS)) {
                    _revert(RoyaltyBPSInvalid.selector);
                }
                _royalties[ids[i]] = _newRoyalties[i];
            }
        } else {
            for (uint256 i = 0; i < idsLength; i++) {
                if (!_royaltyBPSValid(_newRoyalties[i].royaltyPercentageBPS)) {
                    _revert(RoyaltyBPSInvalid.selector);
                }
                if (!IRoyaltyManager(_royaltyManager).canSetGranularRoyalty(ids[i], _newRoyalties[i], msgSender)) {
                    _revert(RoyaltySetBlocked.selector);
                }
                _royalties[ids[i]] = _newRoyalties[i];
            }
        }

        emit GranularRoyaltiesSet(ids, _newRoyalties);
        observability.emitGranularRoyaltiesSet(ids, _newRoyalties);
    }

    /**
     * @notice Sets royalty manager if current one allows it
     * @param _royaltyManager New royalty manager
     */
    function setRoyaltyManager(address _royaltyManager) external nonReentrant {
        if (!_isValidRoyaltyManager(_royaltyManager)) {
            _revert(InvalidManager.selector);
        }
        address msgSender = _msgSender();

        address currentRoyaltyManager = royaltyManager;
        if (currentRoyaltyManager == address(0)) {
            if (msgSender != owner()) {
                _revert(Unauthorized.selector);
            }
        } else {
            if (!IRoyaltyManager(currentRoyaltyManager).canSwap(_royaltyManager, msgSender)) {
                _revert(ManagerSwapBlocked.selector);
            }
        }

        royaltyManager = _royaltyManager;

        emit RoyaltyManagerChanged(_royaltyManager);
        observability.emitRoyaltyManagerChanged(_royaltyManager);
    }

    /**
     * @notice Removes royalty manager if current one allows it
     */
    function removeRoyaltyManager() external nonReentrant {
        address msgSender = _msgSender();

        address currentRoyaltyManager = royaltyManager;
        if (currentRoyaltyManager == address(0)) {
            _revert(ManagerDoesNotExist.selector);
        }
        if (!IRoyaltyManager(currentRoyaltyManager).canRemoveItself(msgSender)) {
            _revert(ManagerRemoveBlocked.selector);
        }

        royaltyManager = address(0);

        emit RoyaltyManagerChanged(address(0));
        observability.emitRoyaltyManagerChanged(address(0));
    }

    /**
     * @notice Freeze mints on contract forever
     */
    function freezeMints() external onlyOwner nonReentrant {
        _mintFrozen = 1;

        emit MintsFrozen();
        observability.emitMintsFrozen();
    }

    /**
     * @notice Return allowed minters on contract
     */
    function minters() external view returns (address[] memory) {
        return _minters.values();
    }

    /**
     * @notice Conforms to ERC-2981. Editions should overwrite to return royalty for entire edition
     * @param _tokenGroupingId Token id if on general, and edition id if on editions
     * @param _salePrice Sale price of token
     */
    function royaltyInfo(uint256 _tokenGroupingId, uint256 _salePrice)
        public
        view
        virtual
        override
        returns (address receiver, uint256 royaltyAmount)
    {
        IRoyaltyManager.Royalty memory royalty = _royalties[_tokenGroupingId];
        if (royalty.recipientAddress == address(0)) {
            royalty = _defaultRoyalty;
        }

        receiver = royalty.recipientAddress;
        royaltyAmount = (_salePrice * uint256(royalty.royaltyPercentageBPS)) / 10000;
    }

    /**
     * @notice Returns the token manager for the id passed in.
     * @param id Token ID or Edition ID for Editions implementing contracts
     */
    function tokenManager(uint256 id) public view returns (address manager) {
        manager = defaultManager;
        address granularManager = _managers[id];

        if (granularManager != address(0)) {
            manager = granularManager;
        }
    }

    /**
     * @notice Initializes the contract, setting the creator as the initial owner.
     * @param _creator Contract creator
     * @param defaultRoyalty Default royalty for the contract
     * @param _defaultTokenManager Default token manager for the contract
     */
    function __ERC721Base_initialize(
        address _creator,
        IRoyaltyManager.Royalty memory defaultRoyalty,
        address _defaultTokenManager
    ) internal onlyInitializing royaltyValid(defaultRoyalty.royaltyPercentageBPS) {
        __Ownable_init();
        __ReentrancyGuard_init();
        _transferOwnership(_creator);

        if (_defaultRoyalty.recipientAddress != address(0)) {
            _defaultRoyalty = defaultRoyalty;
        }

        if (_defaultTokenManager != address(0)) {
            defaultManager = _defaultTokenManager;
        }
    }

    /**
     * @notice Returns true if address is a valid tokenManager
     * @param _tokenManager Token manager being checked
     */
    function _isValidTokenManager(address _tokenManager) internal view returns (bool) {
        return _tokenManager.supportsInterface(type(ITokenManager).interfaceId);
    }

    /**
     * @notice Returns true if address is a valid royaltyManager
     * @param _royaltyManager Royalty manager being checked
     */
    function _isValidRoyaltyManager(address _royaltyManager) internal view returns (bool) {
        return _royaltyManager.supportsInterface(type(IRoyaltyManager).interfaceId);
    }

    /**
     * @notice Used for meta-transactions
     */
    function _msgSender()
        internal
        view
        virtual
        override(ContextUpgradeable, ERC2771ContextUpgradeable)
        returns (address sender)
    {
        return ERC2771ContextUpgradeable._msgSender();
    }

    /**
     * @dev For more efficient reverts.
     */
    function _revert(bytes4 errorSelector) internal pure virtual {
        assembly {
            mstore(0x00, errorSelector)
            revert(0x00, 0x04)
        }
    }

    /**
     * @notice Used for meta-transactions
     */
    function _msgData()
        internal
        view
        virtual
        override(ContextUpgradeable, ERC2771ContextUpgradeable)
        returns (bytes calldata)
    {
        return ERC2771ContextUpgradeable._msgData();
    }

    /**
     * @notice Returns true if royalty bps passed in is valid (<= 10000)
     * @param _royaltyBPS Royalty basis points
     */
    function _royaltyBPSValid(uint16 _royaltyBPS) private pure returns (bool) {
        return _royaltyBPS <= 10000;
    }
}

// SPDX-License-Identifier: MIT

pragma solidity 0.8.10;

/**
 * @author highlight.xyz
 * @notice If token managers implement this, transfer actions will call
 *      postSafeTransferFrom or postTransferFrom on the token manager.
 */
interface IPostTransfer {
    /**
     * @notice Hook called by community after safe transfers, if token manager of transferred token implements this
     *      interface.
     * @param operator Operator transferring tokens
     * @param from Token(s) sender
     * @param to Token(s) recipient
     * @param id Transferred token's id
     * @param data Arbitrary data
     */
    function postSafeTransferFrom(
        address operator,
        address from,
        address to,
        uint256 id,
        bytes memory data
    ) external;

    /**
     * @notice Hook called by community after transfers, if token manager of transferred token implements
     *         this interface.
     * @param operator Operator transferring tokens
     * @param from Token(s) sender
     * @param to Token(s) recipient
     * @param id Transferred token's id
     */
    function postTransferFrom(
        address operator,
        address from,
        address to,
        uint256 id
    ) external;
}

// SPDX-License-Identifier: MIT

pragma solidity 0.8.10;

/**
 * @author highlight.xyz
 * @notice If token managers implement this, transfer actions will call
 *      postBurn on the token manager.
 */
interface IPostBurn {
    /**
     * @notice Hook called by contract after burn, if token manager of burned token implements this
     *      interface.
     * @param operator Operator burning tokens
     * @param sender Msg sender
     * @param id Burned token's id or id of edition of token that is burned
     */
    function postBurn(
        address operator,
        address sender,
        uint256 id
    ) external;
}

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

/**
 * @notice General721 mint interface
 * @author highlight.xyz
 */
interface IERC721GeneralMint {
    /**
     * @notice Mint one token to one recipient
     * @param recipient Recipient of minted NFT
     */
    function mintOneToOneRecipient(address recipient) external returns (uint256);

    /**
     * @notice Mint an amount of tokens to one recipient
     * @param recipient Recipient of minted NFTs
     * @param amount Amount of NFTs minted
     */
    function mintAmountToOneRecipient(address recipient, uint256 amount) external;

    /**
     * @notice Mint one token to multiple recipients. Useful for use-cases like airdrops
     * @param recipients Recipients of minted NFTs
     */
    function mintOneToMultipleRecipients(address[] calldata recipients) external;

    /**
     * @notice Mint the same amount of tokens to multiple recipients
     * @param recipients Recipients of minted NFTs
     * @param amount Amount of NFTs minted to each recipient
     */
    function mintSameAmountToMultipleRecipients(address[] calldata recipients, uint256 amount) external;

    /**
     * @notice Mint a chosen token id to a single recipient
     * @param recipient Recipient of chosen NFT
     * @param tokenId ID of NFT to mint
     */
    function mintSpecificTokenToOneRecipient(address recipient, uint256 tokenId) external;

    /**
     * @notice Mint chosen token ids to a single recipient
     * @param recipient Recipient of chosen NFT
     * @param tokenIds IDs of NFTs to mint
     */
    function mintSpecificTokensToOneRecipient(address recipient, uint256[] calldata tokenIds) external;
}

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

import "./ERC721Base.sol";
import "../metadata/MetadataEncryption.sol";
import "../tokenManager/interfaces/IPostTransfer.sol";
import "../tokenManager/interfaces/IPostBurn.sol";
import "./interfaces/IERC721GeneralMint.sol";
import "../utils/ERC721/ERC721URIStorageUpgradeable.sol";

/**
 * @title Generalized Base ERC721
 * @author highlight.xyz
 * @notice Generalized Base NFT smart contract
 */
abstract contract ERC721GeneralGenesisBase is ERC721Base, ERC721URIStorageUpgradeable, IERC721GeneralMint {
    using EnumerableSet for EnumerableSet.AddressSet;

    /**
     * @notice Throw when attempting to mint, while mint is frozen
     */
    error MintFrozen();

    /**
     * @notice Throw when requested token is not in range within bounds of limit supply
     */
    error TokenNotInRange();

    /**
     * @notice Throw when new supply is over limit supply
     */
    error OverLimitSupply();

    /**
     * @notice Throw when array lengths are mismatched
     */
    error MismatchedArrayLengths();

    /**
     * @notice Throw when string is empty
     */
    error EmptyString();

    /**
     * @notice Contract metadata
     */
    string public contractURI;

    /**
     * @notice Limit the supply to take advantage of over-promising in summation with multiple mint vectors
     */
    uint256 public limitSupply;

    /**
     * @notice Emitted when uris are set for tokens
     * @param ids IDs of tokens to set uris for
     * @param uris Uris to set on tokens
     */
    event TokenURIsSet(uint256[] ids, string[] uris);

    /**
     * @notice Emitted when limit supply is set
     * @param newLimitSupply Limit supply to set
     */
    event LimitSupplySet(uint256 indexed newLimitSupply);

    /**
     * @notice See {IERC721GeneralMint-mintOneToOneRecipient}
     */
    function mintOneToOneRecipient(address recipient) external onlyMinter nonReentrant returns (uint256) {
        if (_mintFrozen == 1) {
            _revert(MintFrozen.selector);
        }

        uint256 tempSupply = _nextTokenId();
        _requireLimitSupply(tempSupply);

        _mint(recipient, 1, tempSupply, tempSupply);

        return tempSupply;
    }

    /**
     * @notice See {IERC721GeneralMint-mintAmountToOneRecipient}
     */
    function mintAmountToOneRecipient(address recipient, uint256 amount) external onlyMinter nonReentrant {
        if (_mintFrozen == 1) {
            _revert(MintFrozen.selector);
        }
        uint256 tempSupply = _nextTokenId(); // cache
        _requireLimitSupply(tempSupply + amount - 1);

        _mint(recipient, amount, tempSupply, tempSupply);
    }

    /**
     * @notice See {IERC721GeneralMint-mintOneToMultipleRecipients}
     */
    function mintOneToMultipleRecipients(address[] calldata recipients) external onlyMinter nonReentrant {
        if (_mintFrozen == 1) {
            _revert(MintFrozen.selector);
        }
        uint256 recipientsLength = recipients.length;
        uint256 tempSupply = _nextTokenId(); // cache

        for (uint256 i = 0; i < recipientsLength; i++) {
            _mint(recipients[i], 1, tempSupply, tempSupply);
            tempSupply++;
        }

        _requireLimitSupply(tempSupply - 1);
    }

    /**
     * @notice See {IERC721GeneralMint-mintSameAmountToMultipleRecipients}
     */
    function mintSameAmountToMultipleRecipients(address[] calldata recipients, uint256 amount)
        external
        onlyMinter
        nonReentrant
    {
        if (_mintFrozen == 1) {
            _revert(MintFrozen.selector);
        }
        uint256 recipientsLength = recipients.length;
        uint256 tempSupply = _nextTokenId(); // cache

        for (uint256 i = 0; i < recipientsLength; i++) {
            _mint(recipients[i], amount, tempSupply, tempSupply);
            tempSupply += amount;
        }

        _requireLimitSupply(tempSupply - 1);
    }

    /**
     * @notice See {IERC721GeneralMint-mintSpecificTokenToOneRecipient}
     */
    function mintSpecificTokenToOneRecipient(address recipient, uint256 tokenId) external onlyMinter nonReentrant {
        if (_mintFrozen == 1) {
            _revert(MintFrozen.selector);
        }

        uint256 _limitSupply = limitSupply;
        if (_limitSupply != 0) {
            if (tokenId > _limitSupply) {
                _revert(TokenNotInRange.selector);
            }
        }

        _mint(recipient, 1, tokenId, 0);
    }

    /**
     * @notice See {IERC721GeneralMint-mintSpecificTokensToOneRecipient}
     */
    function mintSpecificTokensToOneRecipient(address recipient, uint256[] calldata tokenIds)
        external
        onlyMinter
        nonReentrant
    {
        if (_mintFrozen == 1) {
            _revert(MintFrozen.selector);
        }

        uint256 tempSupply = _nextTokenId();

        uint256 tokenIdsLength = tokenIds.length;
        uint256 _limitSupply = limitSupply;
        if (_limitSupply == 0) {
            // don't check that token id is within range, since _limitSupply being 0 implies unlimited range
            for (uint256 i = 0; i < tokenIdsLength; i++) {
                _mint(recipient, 1, tokenIds[i], tempSupply);
                tempSupply++;
            }
        } else {
            // check that token id is within range
            for (uint256 i = 0; i < tokenIdsLength; i++) {
                if (tokenIds[i] > _limitSupply) {
                    _revert(TokenNotInRange.selector);
                }
                _mint(recipient, 1, tokenIds[i], tempSupply);
                tempSupply++;
            }
        }
    }

    /**
     * @notice Override base URI system for select tokens, with custom per-token metadata
     * @param ids IDs of tokens to override base uri system for with custom uris
     * @param uris Custom uris
     */
    function setTokenURIs(uint256[] calldata ids, string[] calldata uris) external nonReentrant {
        uint256 idsLength = ids.length;
        if (idsLength != uris.length) {
            _revert(MismatchedArrayLengths.selector);
        }

        for (uint256 i = 0; i < idsLength; i++) {
            _setTokenURI(ids[i], uris[i]);
        }

        emit TokenURIsSet(ids, uris);
        observability.emitTokenURIsSet(ids, uris);
    }

    /**
     * @notice Set base uri
     * @param newBaseURI New base uri to set
     */
    function setBaseURI(string calldata newBaseURI) external nonReentrant {
        if (bytes(newBaseURI).length == 0) {
            _revert(EmptyString.selector);
        }

        address _manager = defaultManager;

        if (_manager == address(0)) {
            if (_msgSender() != owner()) {
                _revert(Unauthorized.selector);
            }
        } else {
            if (!ITokenManager(_manager).canUpdateMetadata(_msgSender(), 0, bytes(newBaseURI))) {
                _revert(Unauthorized.selector);
            }
        }

        _setBaseURI(newBaseURI);
        observability.emitBaseUriSet(newBaseURI);
    }

    /**
     * @notice Set limit supply
     * @param _limitSupply Limit supply to set
     */
    function setLimitSupply(uint256 _limitSupply) external onlyOwner nonReentrant {
        // allow it to be 0, for post-mint
        limitSupply = _limitSupply;

        emit LimitSupplySet(_limitSupply);
        observability.emitLimitSupplySet(_limitSupply);
    }

    /**
     * @notice Set contract name
     * @param newName New name
     * @param newSymbol New symbol
     * @param newContractUri New contractURI
     */
    function setContractMetadata(
        string calldata newName,
        string calldata newSymbol,
        string calldata newContractUri
    ) external onlyOwner {
        _setContractMetadata(newName, newSymbol);
        contractURI = newContractUri;

        observability.emitContractMetadataSet(newName, newSymbol, newContractUri);
    }

    /**
     * @notice Hook called after transfers
     * @param from Account token is being transferred from
     * @param to Account token is being transferred to
     * @param tokenId ID of token being transferred
     */
    function _afterTokenTransfers(
        address from,
        address to,
        uint256 tokenId
    ) internal override {
        address msgSender = _msgSender();

        address _manager = tokenManager(tokenId);
        if (_manager != address(0) && IERC165Upgradeable(_manager).supportsInterface(type(IPostTransfer).interfaceId)) {
            IPostTransfer(_manager).postSafeTransferFrom(msgSender, from, to, tokenId, "");
        }

        observability.emitTransfer(from, to, tokenId);
    }

    /**
     * @notice See {IERC721-burn}. Overrides default behaviour to check associated tokenManager.
     */
    function burn(uint256 tokenId) public nonReentrant {
        address _manager = tokenManager(tokenId);
        address msgSender = _msgSender();

        if (_manager != address(0) && IERC165Upgradeable(_manager).supportsInterface(type(IPostBurn).interfaceId)) {
            address owner = ownerOf(tokenId);
            IPostBurn(_manager).postBurn(msgSender, owner, tokenId);
        } else {
            // default to restricting burn to owner or operator if a valid TM isn't present
            if (!_isApprovedOrOwner(msgSender, tokenId)) {
                _revert(Unauthorized.selector);
            }
        }

        _burn(tokenId);

        observability.emitTransfer(msgSender, address(0), tokenId);
    }

    /**
     * @notice Overrides tokenURI to first rotate the token id
     * @param tokenId ID of token to get uri for
     */
    function tokenURI(uint256 tokenId) public view virtual override returns (string memory) {
        return ERC721URIStorageUpgradeable.tokenURI(tokenId);
    }

    /**
     * @notice See {IERC165-supportsInterface}.
     */
    function supportsInterface(bytes4 interfaceId)
        public
        view
        virtual
        override(IERC165Upgradeable, ERC721AUpgradeable)
        returns (bool)
    {
        return ERC721AUpgradeable.supportsInterface(interfaceId);
    }

    /**
     * @notice Used for meta-transactions
     */
    function _msgSender() internal view override(ERC721Base) returns (address sender) {
        return ERC2771ContextUpgradeable._msgSender();
    }

    /**
     * @notice Used for meta-transactions
     */
    function _msgData() internal view override(ERC721Base) returns (bytes calldata) {
        return ERC2771ContextUpgradeable._msgData();
    }

    /**
     * @dev For more efficient reverts.
     */
    function _revert(bytes4 errorSelector) internal pure override(ERC721AUpgradeable, ERC721Base) {
        ERC721AUpgradeable._revert(errorSelector);
    }

    /**
     * @notice Override base URI system for select tokens, with custom per-token metadata
     * @param tokenId Token to set uri for
     * @param _uri Uri to set on token
     */
    function _setTokenURI(uint256 tokenId, string calldata _uri) private {
        address _manager = tokenManager(tokenId);
        address msgSender = _msgSender();

        address tempOwner = owner();
        if (_manager == address(0)) {
            if (msgSender != tempOwner) {
                _revert(Unauthorized.selector);
            }
        } else {
            if (!ITokenManager(_manager).canUpdateMetadata(msgSender, tokenId, bytes(_uri))) {
                _revert(Unauthorized.selector);
            }
        }

        _tokenURIs[tokenId] = _uri;
    }

    /**
     * @notice Require the new supply of tokens after mint to be less than limit supply
     * @param newSupply New supply
     */
    function _requireLimitSupply(uint256 newSupply) private view {
        uint256 _limitSupply = limitSupply;
        if (_limitSupply != 0 && newSupply > _limitSupply) {
            _revert(OverLimitSupply.selector);
        }
    }
}

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

/**
 * @title IRoyaltyManager
 * @author highlight.xyz
 * @notice Enables interfacing with custom royalty managers that define conditions on setting royalties for
 *         NFT contracts
 */
interface IRoyaltyManager {
    /**
     * @notice Struct containing values required to adhere to ERC-2981
     * @param recipientAddress Royalty recipient - can be EOA, royalty splitter contract, etc.
     * @param royaltyPercentageBPS Royalty cut, in basis points
     */
    struct Royalty {
        address recipientAddress;
        uint16 royaltyPercentageBPS;
    }

    /**
     * @notice Defines conditions around being able to swap royalty manager for another one
     * @param newRoyaltyManager New royalty manager being swapped in
     * @param sender msg sender
     */
    function canSwap(address newRoyaltyManager, address sender) external view returns (bool);

    /**
     * @notice Defines conditions around being able to remove current royalty manager
     * @param sender msg sender
     */
    function canRemoveItself(address sender) external view returns (bool);

    /**
     * @notice Defines conditions around being able to set granular royalty (per token or per edition)
     * @param id Edition / token ID whose royalty is being set
     * @param royalty Royalty being set
     * @param sender msg sender
     */
    function canSetGranularRoyalty(
        uint256 id,
        Royalty calldata royalty,
        address sender
    ) external view returns (bool);

    /**
     * @notice Defines conditions around being able to set default royalty
     * @param royalty Royalty being set
     * @param sender msg sender
     */
    function canSetDefaultRoyalty(Royalty calldata royalty, address sender) external view returns (bool);
}

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

/**
 * @title ITokenManager
 * @author highlight.xyz
 * @notice Enables interfacing with custom token managers
 */
interface ITokenManager {
    /**
     * @notice Returns whether metadata updater is allowed to update
     * @param sender Updater
     * @param id Token/edition who's uri is being updated
     *           If id is 0, implementation should decide behaviour for base uri update
     * @param newData Token's new uri if called by general contract, and any metadata field if called by editions
     * @return If invocation can update metadata
     */
    function canUpdateMetadata(
        address sender,
        uint256 id,
        bytes calldata newData
    ) external returns (bool);

    /**
     * @notice Returns whether token manager can be swapped for another one by invocator
     * @notice Default token manager implementations should ignore id
     * @param sender Swapper
     * @param id Token grouping id (token id or edition id)
     * @param newTokenManager New token manager being swapped to
     * @return If invocation can swap token managers
     */
    function canSwap(
        address sender,
        uint256 id,
        address newTokenManager
    ) external returns (bool);

    /**
     * @notice Returns whether token manager can be removed
     * @notice Default token manager implementations should ignore id
     * @param sender Swapper
     * @param id Token grouping id (token id or edition id)
     * @return If invocation can remove token manager
     */
    function canRemoveItself(address sender, uint256 id) external returns (bool);
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.7.0) (access/Ownable.sol)

pragma solidity 0.8.10;

import "@openzeppelin/contracts/utils/Context.sol";

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

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

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

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

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

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

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

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

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

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.6.0) (interfaces/IERC2981Upgradeable.sol)

pragma solidity 0.8.10;

import "../ERC165/IERC165Upgradeable.sol";

/**
 * @dev Interface for the NFT Royalty Standard.
 *
 * A standardized way to retrieve royalty payment information for non-fungible tokens (NFTs) to enable universal
 * support for royalty payments across all NFT marketplaces and ecosystem participants.
 *
 * _Available since v4.5._
 */
interface IERC2981Upgradeable is IERC165Upgradeable {
    /**
     * @dev Returns how much royalty is owed and to whom, based on a sale price that may be denominated in any unit of
     * exchange. The royalty amount is denominated and should be paid in that same unit of exchange.
     */
    function royaltyInfo(uint256 tokenId, uint256 salePrice)
        external
        view
        returns (address receiver, uint256 royaltyAmount);
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/introspection/ERC165Checker.sol)

pragma solidity 0.8.10;

import "./IERC165Upgradeable.sol";

/**
 * @dev Library used to query support of an interface declared via {IERC165}.
 *
 * Note that these functions return the actual result of the query: they do not
 * `revert` if an interface is not supported. It is up to the caller to decide
 * what to do in these cases.
 */
/* solhint-disable */
library ERC165CheckerUpgradeable {
    // As per the EIP-165 spec, no interface should ever match 0xffffffff
    bytes4 private constant _INTERFACE_ID_INVALID = 0xffffffff;

    /**
     * @dev Returns true if `account` supports the {IERC165} interface,
     */
    function supportsERC165(address account) internal view returns (bool) {
        // Any contract that implements ERC165 must explicitly indicate support of
        // InterfaceId_ERC165 and explicitly indicate non-support of InterfaceId_Invalid
        return
            supportsERC165InterfaceUnchecked(account, type(IERC165Upgradeable).interfaceId) &&
            !supportsERC165InterfaceUnchecked(account, _INTERFACE_ID_INVALID);
    }

    /**
     * @dev Returns true if `account` supports the interface defined by
     * `interfaceId`. Support for {IERC165} itself is queried automatically.
     *
     * See {IERC165-supportsInterface}.
     */
    function supportsInterface(address account, bytes4 interfaceId) internal view returns (bool) {
        // query support of both ERC165 as per the spec and support of _interfaceId
        return supportsERC165(account) && supportsERC165InterfaceUnchecked(account, interfaceId);
    }

    /**
     * @dev Returns a boolean array where each value corresponds to the
     * interfaces passed in and whether they're supported or not. This allows
     * you to batch check interfaces for a contract where your expectation
     * is that some interfaces may not be supported.
     *
     * See {IERC165-supportsInterface}.
     *
     * _Available since v3.4._
     */
    function getSupportedInterfaces(address account, bytes4[] memory interfaceIds)
        internal
        view
        returns (bool[] memory)
    {
        // an array of booleans corresponding to interfaceIds and whether they're supported or not
        bool[] memory interfaceIdsSupported = new bool[](interfaceIds.length);

        // query support of ERC165 itself
        if (supportsERC165(account)) {
            // query support of each interface in interfaceIds
            for (uint256 i = 0; i < interfaceIds.length; i++) {
                interfaceIdsSupported[i] = supportsERC165InterfaceUnchecked(account, interfaceIds[i]);
            }
        }

        return interfaceIdsSupported;
    }

    /**
     * @dev Returns true if `account` supports all the interfaces defined in
     * `interfaceIds`. Support for {IERC165} itself is queried automatically.
     *
     * Batch-querying can lead to gas savings by skipping repeated checks for
     * {IERC165} support.
     *
     * See {IERC165-supportsInterface}.
     */
    function supportsAllInterfaces(address account, bytes4[] memory interfaceIds) internal view returns (bool) {
        // query support of ERC165 itself
        if (!supportsERC165(account)) {
            return false;
        }

        // query support of each interface in _interfaceIds
        for (uint256 i = 0; i < interfaceIds.length; i++) {
            if (!supportsERC165InterfaceUnchecked(account, interfaceIds[i])) {
                return false;
            }
        }

        // all interfaces supported
        return true;
    }

    /**
     * @notice Query if a contract implements an interface, does not check ERC165 support
     * @param account The address of the contract to query for support of an interface
     * @param interfaceId The interface identifier, as specified in ERC-165
     * @return true if the contract at account indicates support of the interface with
     * identifier interfaceId, false otherwise
     * @dev Assumes that account contains a contract that supports ERC165, otherwise
     * the behavior of this method is undefined. This precondition can be checked
     * with {supportsERC165}.
     * Interface identification is specified in ERC-165.
     */
    function supportsERC165InterfaceUnchecked(address account, bytes4 interfaceId) internal view returns (bool) {
        // prepare call
        bytes memory encodedParams = abi.encodeWithSelector(IERC165Upgradeable.supportsInterface.selector, interfaceId);

        // perform static call
        bool success;
        uint256 returnSize;
        uint256 returnValue;
        assembly {
            success := staticcall(30000, account, add(encodedParams, 0x20), mload(encodedParams), 0x00, 0x20)
            returnSize := returndatasize()
            returnValue := mload(0x00)
        }

        return success && returnSize >= 0x20 && returnValue > 0;
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.5.0) (metatx/ERC2771Context.sol)

pragma solidity 0.8.10;

import "@openzeppelin/contracts-upgradeable/proxy/utils/Initializable.sol";

/**
 * @dev Context variant with ERC2771 support.
 *      Openzeppelin contract slightly modified by ishan@ highlight.xyz to be upgradeable.
 */
abstract contract ERC2771ContextUpgradeable is Initializable {
    address private _trustedForwarder;

    /**
     * @dev This empty reserved space is put in place to allow future versions to add new
     * variables without shifting down storage in the inheritance chain.
     * See https://docs.openzeppelin.com/contracts/4.x/upgradeable#storage_gaps
     */
    uint256[49] private __gap;

    function isTrustedForwarder(address forwarder) public view virtual returns (bool) {
        return forwarder == _trustedForwarder;
    }

    function __ERC2771ContextUpgradeable__init__(address trustedForwarder) internal onlyInitializing {
        _trustedForwarder = trustedForwarder;
    }

    function _msgSender() internal view virtual returns (address sender) {
        if (isTrustedForwarder(msg.sender)) {
            // The assembly code is more direct than the Solidity version using `abi.decode`.
            /* solhint-disable no-inline-assembly */
            assembly {
                sender := shr(96, calldataload(sub(calldatasize(), 20)))
            }
            /* solhint-enable no-inline-assembly */
        } else {
            return msg.sender;
        }
    }

    function _msgData() internal view virtual returns (bytes calldata) {
        if (isTrustedForwarder(msg.sender)) {
            return msg.data[:msg.data.length - 20];
        } else {
            return msg.data;
        }
    }
}

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

import "../royaltyManager/interfaces/IRoyaltyManager.sol";

/**
 * @title IObservability
 * @author highlight.xyz
 * @notice Interface to interact with the Highlight observability singleton
 * @dev Singleton to coalesce select Highlight protocol events
 */
interface IObservability {
    /**************************
      ERC721Base / ERC721MinimizedBase events
     **************************/

    /**
     * @notice Emitted when minter is registered or unregistered
     * @param contractAddress Initial contract that emitted event
     * @param minter Minter that was changed
     * @param registered True if the minter was registered, false if unregistered
     */
    event MinterRegistrationChanged(address indexed contractAddress, address indexed minter, bool indexed registered);

    /**
     * @notice Emitted when token managers are set for token/edition ids
     * @param contractAddress Initial contract that emitted event
     * @param _ids Edition / token ids
     * @param _tokenManagers Token managers to set for tokens / editions
     */
    event GranularTokenManagersSet(address indexed contractAddress, uint256[] _ids, address[] _tokenManagers);

    /**
     * @notice Emitted when token managers are removed for token/edition ids
     * @param contractAddress Initial contract that emitted event
     * @param _ids Edition / token ids to remove token managers for
     */
    event GranularTokenManagersRemoved(address indexed contractAddress, uint256[] _ids);

    /**
     * @notice Emitted when default token manager changed
     * @param contractAddress Initial contract that emitted event
     * @param newDefaultTokenManager New default token manager. Zero address if old one was removed
     */
    event DefaultTokenManagerChanged(address indexed contractAddress, address indexed newDefaultTokenManager);

    /**
     * @notice Emitted when default royalty is set
     * @param contractAddress Initial contract that emitted event
     * @param recipientAddress Royalty recipient
     * @param royaltyPercentageBPS Percentage of sale (in basis points) owed to royalty recipient
     */
    event DefaultRoyaltySet(
        address indexed contractAddress,
        address indexed recipientAddress,
        uint16 indexed royaltyPercentageBPS
    );

    /**
     * @notice Emitted when royalties are set for edition / token ids
     * @param contractAddress Initial contract that emitted event
     * @param ids Token / edition ids
     * @param _newRoyalties New royalties for each token / edition
     */
    event GranularRoyaltiesSet(address indexed contractAddress, uint256[] ids, IRoyaltyManager.Royalty[] _newRoyalties);

    /**
     * @notice Emitted when royalty manager is updated
     * @param contractAddress Initial contract that emitted event
     * @param newRoyaltyManager New royalty manager. Zero address if old one was removed
     */
    event RoyaltyManagerChanged(address indexed contractAddress, address indexed newRoyaltyManager);

    /**
     * @notice Emitted when mints are frozen permanently
     * @param contractAddress Initial contract that emitted event
     */
    event MintsFrozen(address indexed contractAddress);

    /**
     * @notice Emitted when contract metadata is set
     * @param contractAddress Initial contract that emitted event
     * @param name New name
     * @param symbol New symbol
     * @param contractURI New contract uri
     */
    event ContractMetadataSet(address indexed contractAddress, string name, string symbol, string contractURI);

    /**************************
      ERC721General events
     **************************/

    /**
     * @notice Emitted when hashed metadata config is set
     * @param contractAddress Initial contract that emitted event
     * @param hashedURIData Hashed uri data
     * @param hashedRotationData Hashed rotation key
     * @param _supply Supply of tokens to mint w/ reveal
     */
    event HashedMetadataConfigSet(
        address indexed contractAddress,
        bytes hashedURIData,
        bytes hashedRotationData,
        uint256 indexed _supply
    );

    /**
     * @notice Emitted when metadata is revealed
     * @param contractAddress Initial contract that emitted event
     * @param key Key used to decode hashed data
     * @param newRotationKey Actual rotation key to be used
     */
    event Revealed(address indexed contractAddress, bytes key, uint256 newRotationKey);

    /**************************
      ERC721GeneralBase events
     **************************/

    /**
     * @notice Emitted when uris are set for tokens
     * @param contractAddress Initial contract that emitted event
     * @param ids IDs of tokens to set uris for
     * @param uris Uris to set on tokens
     */
    event TokenURIsSet(address indexed contractAddress, uint256[] ids, string[] uris);

    /**
     * @notice Emitted when limit supply is set
     * @param contractAddress Initial contract that emitted event
     * @param newLimitSupply Limit supply to set
     */
    event LimitSupplySet(address indexed contractAddress, uint256 indexed newLimitSupply);

    /**************************
      ERC721StorageUri events
     **************************/

    /**
     * @notice Emits when a series collection has its base uri set
     * @param contractAddress Contract with updated base uri
     * @param newBaseUri New base uri
     */
    event BaseUriSet(address indexed contractAddress, string newBaseUri);

    /**************************
      ERC721Editions / ERC721SingleEdition events
     **************************/

    // Not adding EditionCreated, EditionMintedToOneRecipient, EditionMintedToRecipients
    // EditionCreated - handled by MetadataInitialized
    // EditionMintedToOneRecipient / EditionMintedToRecipients - handled via mint module events

    /**************************
      Deployment events
     **************************/

    /**
     * @notice Emitted when Generative Series contract is deployed
     * @param deployer Contract deployer
     * @param contractAddress Address of contract that was deployed
     */
    event GenerativeSeriesDeployed(address indexed deployer, address indexed contractAddress);

    /**
     * @notice Emitted when Series contract is deployed
     * @param deployer Contract deployer
     * @param contractAddress Address of contract that was deployed
     */
    event SeriesDeployed(address indexed deployer, address indexed contractAddress);

    /**
     * @notice Emitted when MultipleEditions contract is deployed
     * @param deployer Contract deployer
     * @param contractAddress Address of contract that was deployed
     */
    event MultipleEditionsDeployed(address indexed deployer, address indexed contractAddress);

    /**
     * @notice Emitted when SingleEdition contract is deployed
     * @param deployer Contract deployer
     * @param contractAddress Address of contract that was deployed
     */
    event SingleEditionDeployed(address indexed deployer, address indexed contractAddress);

    /**************************
      ERC721 events
     **************************/

    /**
     * @notice Emitted when `tokenId` token is transferred from `from` to `to` on contractAddress
     * @param contractAddress NFT contract token resides on
     * @param from Token sender
     * @param to Token receiver
     * @param tokenId Token being sent
     */
    event Transfer(address indexed contractAddress, address indexed from, address to, uint256 indexed tokenId);

    /**
     * @notice Emit MinterRegistrationChanged
     */
    function emitMinterRegistrationChanged(address minter, bool registered) external;

    /**
     * @notice Emit GranularTokenManagersSet
     */
    function emitGranularTokenManagersSet(uint256[] calldata _ids, address[] calldata _tokenManagers) external;

    /**
     * @notice Emit GranularTokenManagersRemoved
     */
    function emitGranularTokenManagersRemoved(uint256[] calldata _ids) external;

    /**
     * @notice Emit DefaultTokenManagerChanged
     */
    function emitDefaultTokenManagerChanged(address newDefaultTokenManager) external;

    /**
     * @notice Emit DefaultRoyaltySet
     */
    function emitDefaultRoyaltySet(address recipientAddress, uint16 royaltyPercentageBPS) external;

    /**
     * @notice Emit GranularRoyaltiesSet
     */
    function emitGranularRoyaltiesSet(uint256[] calldata ids, IRoyaltyManager.Royalty[] calldata _newRoyalties)
        external;

    /**
     * @notice Emit RoyaltyManagerChanged
     */
    function emitRoyaltyManagerChanged(address newRoyaltyManager) external;

    /**
     * @notice Emit MintsFrozen
     */
    function emitMintsFrozen() external;

    /**
     * @notice Emit ContractMetadataSet
     */
    function emitContractMetadataSet(
        string calldata name,
        string calldata symbol,
        string calldata contractURI
    ) external;

    /**
     * @notice Emit HashedMetadataConfigSet
     */
    function emitHashedMetadataConfigSet(
        bytes calldata hashedURIData,
        bytes calldata hashedRotationData,
        uint256 _supply
    ) external;

    /**
     * @notice Emit Revealed
     */
    function emitRevealed(bytes calldata key, uint256 newRotationKey) external;

    /**
     * @notice Emit TokenURIsSet
     */
    function emitTokenURIsSet(uint256[] calldata ids, string[] calldata uris) external;

    /**
     * @notice Emit LimitSupplySet
     */
    function emitLimitSupplySet(uint256 newLimitSupply) external;

    /**
     * @notice Emit BaseUriSet
     */
    function emitBaseUriSet(string calldata newBaseUri) external;

    /**
     * @notice Emit GenerativeSeriesDeployed
     */
    function emitGenerativeSeriesDeployed(address contractAddress) external;

    /**
     * @notice Emit SeriesDeployed
     */
    function emitSeriesDeployed(address contractAddress) external;

    /**
     * @notice Emit MultipleEditionsDeployed
     */
    function emitMultipleEditionsDeployed(address contractAddress) external;

    /**
     * @notice Emit SingleEditionDeployed
     */
    function emitSingleEditionDeployed(address contractAddress) external;

    /**
     * @notice Emit Transfer
     */
    function emitTransfer(
        address from,
        address to,
        uint256 tokenId
    ) external;
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.7.0) (utils/structs/EnumerableSet.sol)

pragma solidity ^0.8.0;

/**
 * @dev Library for managing
 * https://en.wikipedia.org/wiki/Set_(abstract_data_type)[sets] of primitive
 * types.
 *
 * Sets have the following properties:
 *
 * - Elements are added, removed, and checked for existence in constant time
 * (O(1)).
 * - Elements are enumerated in O(n). No guarantees are made on the ordering.
 *
 * ```
 * contract Example {
 *     // Add the library methods
 *     using EnumerableSet for EnumerableSet.AddressSet;
 *
 *     // Declare a set state variable
 *     EnumerableSet.AddressSet private mySet;
 * }
 * ```
 *
 * As of v3.3.0, sets of type `bytes32` (`Bytes32Set`), `address` (`AddressSet`)
 * and `uint256` (`UintSet`) are supported.
 *
 * [WARNING]
 * ====
 *  Trying to delete such a structure from storage will likely result in data corruption, rendering the structure unusable.
 *  See https://github.com/ethereum/solidity/pull/11843[ethereum/solidity#11843] for more info.
 *
 *  In order to clean an EnumerableSet, you can either remove all elements one by one or create a fresh instance using an array of EnumerableSet.
 * ====
 */
library EnumerableSet {
    // To implement this library for multiple types with as little code
    // repetition as possible, we write it in terms of a generic Set type with
    // bytes32 values.
    // The Set implementation uses private functions, and user-facing
    // implementations (such as AddressSet) are just wrappers around the
    // underlying Set.
    // This means that we can only create new EnumerableSets for types that fit
    // in bytes32.

    struct Set {
        // Storage of set values
        bytes32[] _values;
        // Position of the value in the `values` array, plus 1 because index 0
        // means a value is not in the set.
        mapping(bytes32 => uint256) _indexes;
    }

    /**
     * @dev Add a value to a set. O(1).
     *
     * Returns true if the value was added to the set, that is if it was not
     * already present.
     */
    function _add(Set storage set, bytes32 value) private returns (bool) {
        if (!_contains(set, value)) {
            set._values.push(value);
            // The value is stored at length-1, but we add 1 to all indexes
            // and use 0 as a sentinel value
            set._indexes[value] = set._values.length;
            return true;
        } else {
            return false;
        }
    }

    /**
     * @dev Removes a value from a set. O(1).
     *
     * Returns true if the value was removed from the set, that is if it was
     * present.
     */
    function _remove(Set storage set, bytes32 value) private returns (bool) {
        // We read and store the value's index to prevent multiple reads from the same storage slot
        uint256 valueIndex = set._indexes[value];

        if (valueIndex != 0) {
            // Equivalent to contains(set, value)
            // To delete an element from the _values array in O(1), we swap the element to delete with the last one in
            // the array, and then remove the last element (sometimes called as 'swap and pop').
            // This modifies the order of the array, as noted in {at}.

            uint256 toDeleteIndex = valueIndex - 1;
            uint256 lastIndex = set._values.length - 1;

            if (lastIndex != toDeleteIndex) {
                bytes32 lastValue = set._values[lastIndex];

                // Move the last value to the index where the value to delete is
                set._values[toDeleteIndex] = lastValue;
                // Update the index for the moved value
                set._indexes[lastValue] = valueIndex; // Replace lastValue's index to valueIndex
            }

            // Delete the slot where the moved value was stored
            set._values.pop();

            // Delete the index for the deleted slot
            delete set._indexes[value];

            return true;
        } else {
            return false;
        }
    }

    /**
     * @dev Returns true if the value is in the set. O(1).
     */
    function _contains(Set storage set, bytes32 value) private view returns (bool) {
        return set._indexes[value] != 0;
    }

    /**
     * @dev Returns the number of values on the set. O(1).
     */
    function _length(Set storage set) private view returns (uint256) {
        return set._values.length;
    }

    /**
     * @dev Returns the value stored at position `index` in the set. O(1).
     *
     * Note that there are no guarantees on the ordering of values inside the
     * array, and it may change when more values are added or removed.
     *
     * Requirements:
     *
     * - `index` must be strictly less than {length}.
     */
    function _at(Set storage set, uint256 index) private view returns (bytes32) {
        return set._values[index];
    }

    /**
     * @dev Return the entire set in an array
     *
     * WARNING: This operation will copy the entire storage to memory, which can be quite expensive. This is designed
     * to mostly be used by view accessors that are queried without any gas fees. Developers should keep in mind that
     * this function has an unbounded cost, and using it as part of a state-changing function may render the function
     * uncallable if the set grows to a point where copying to memory consumes too much gas to fit in a block.
     */
    function _values(Set storage set) private view returns (bytes32[] memory) {
        return set._values;
    }

    // Bytes32Set

    struct Bytes32Set {
        Set _inner;
    }

    /**
     * @dev Add a value to a set. O(1).
     *
     * Returns true if the value was added to the set, that is if it was not
     * already present.
     */
    function add(Bytes32Set storage set, bytes32 value) internal returns (bool) {
        return _add(set._inner, value);
    }

    /**
     * @dev Removes a value from a set. O(1).
     *
     * Returns true if the value was removed from the set, that is if it was
     * present.
     */
    function remove(Bytes32Set storage set, bytes32 value) internal returns (bool) {
        return _remove(set._inner, value);
    }

    /**
     * @dev Returns true if the value is in the set. O(1).
     */
    function contains(Bytes32Set storage set, bytes32 value) internal view returns (bool) {
        return _contains(set._inner, value);
    }

    /**
     * @dev Returns the number of values in the set. O(1).
     */
    function length(Bytes32Set storage set) internal view returns (uint256) {
        return _length(set._inner);
    }

    /**
     * @dev Returns the value stored at position `index` in the set. O(1).
     *
     * Note that there are no guarantees on the ordering of values inside the
     * array, and it may change when more values are added or removed.
     *
     * Requirements:
     *
     * - `index` must be strictly less than {length}.
     */
    function at(Bytes32Set storage set, uint256 index) internal view returns (bytes32) {
        return _at(set._inner, index);
    }

    /**
     * @dev Return the entire set in an array
     *
     * WARNING: This operation will copy the entire storage to memory, which can be quite expensive. This is designed
     * to mostly be used by view accessors that are queried without any gas fees. Developers should keep in mind that
     * this function has an unbounded cost, and using it as part of a state-changing function may render the function
     * uncallable if the set grows to a point where copying to memory consumes too much gas to fit in a block.
     */
    function values(Bytes32Set storage set) internal view returns (bytes32[] memory) {
        return _values(set._inner);
    }

    // AddressSet

    struct AddressSet {
        Set _inner;
    }

    /**
     * @dev Add a value to a set. O(1).
     *
     * Returns true if the value was added to the set, that is if it was not
     * already present.
     */
    function add(AddressSet storage set, address value) internal returns (bool) {
        return _add(set._inner, bytes32(uint256(uint160(value))));
    }

    /**
     * @dev Removes a value from a set. O(1).
     *
     * Returns true if the value was removed from the set, that is if it was
     * present.
     */
    function remove(AddressSet storage set, address value) internal returns (bool) {
        return _remove(set._inner, bytes32(uint256(uint160(value))));
    }

    /**
     * @dev Returns true if the value is in the set. O(1).
     */
    function contains(AddressSet storage set, address value) internal view returns (bool) {
        return _contains(set._inner, bytes32(uint256(uint160(value))));
    }

    /**
     * @dev Returns the number of values in the set. O(1).
     */
    function length(AddressSet storage set) internal view returns (uint256) {
        return _length(set._inner);
    }

    /**
     * @dev Returns the value stored at position `index` in the set. O(1).
     *
     * Note that there are no guarantees on the ordering of values inside the
     * array, and it may change when more values are added or removed.
     *
     * Requirements:
     *
     * - `index` must be strictly less than {length}.
     */
    function at(AddressSet storage set, uint256 index) internal view returns (address) {
        return address(uint160(uint256(_at(set._inner, index))));
    }

    /**
     * @dev Return the entire set in an array
     *
     * WARNING: This operation will copy the entire storage to memory, which can be quite expensive. This is designed
     * to mostly be used by view accessors that are queried without any gas fees. Developers should keep in mind that
     * this function has an unbounded cost, and using it as part of a state-changing function may render the function
     * uncallable if the set grows to a point where copying to memory consumes too much gas to fit in a block.
     */
    function values(AddressSet storage set) internal view returns (address[] memory) {
        bytes32[] memory store = _values(set._inner);
        address[] memory result;

        /// @solidity memory-safe-assembly
        assembly {
            result := store
        }

        return result;
    }

    // UintSet

    struct UintSet {
        Set _inner;
    }

    /**
     * @dev Add a value to a set. O(1).
     *
     * Returns true if the value was added to the set, that is if it was not
     * already present.
     */
    function add(UintSet storage set, uint256 value) internal returns (bool) {
        return _add(set._inner, bytes32(value));
    }

    /**
     * @dev Removes a value from a set. O(1).
     *
     * Returns true if the value was removed from the set, that is if it was
     * present.
     */
    function remove(UintSet storage set, uint256 value) internal returns (bool) {
        return _remove(set._inner, bytes32(value));
    }

    /**
     * @dev Returns true if the value is in the set. O(1).
     */
    function contains(UintSet storage set, uint256 value) internal view returns (bool) {
        return _contains(set._inner, bytes32(value));
    }

    /**
     * @dev Returns the number of values on the set. O(1).
     */
    function length(UintSet storage set) internal view returns (uint256) {
        return _length(set._inner);
    }

    /**
     * @dev Returns the value stored at position `index` in the set. O(1).
     *
     * Note that there are no guarantees on the ordering of values inside the
     * array, and it may change when more values are added or removed.
     *
     * Requirements:
     *
     * - `index` must be strictly less than {length}.
     */
    function at(UintSet storage set, uint256 index) internal view returns (uint256) {
        return uint256(_at(set._inner, index));
    }

    /**
     * @dev Return the entire set in an array
     *
     * WARNING: This operation will copy the entire storage to memory, which can be quite expensive. This is designed
     * to mostly be used by view accessors that are queried without any gas fees. Developers should keep in mind that
     * this function has an unbounded cost, and using it as part of a state-changing function may render the function
     * uncallable if the set grows to a point where copying to memory consumes too much gas to fit in a block.
     */
    function values(UintSet storage set) internal view returns (uint256[] memory) {
        bytes32[] memory store = _values(set._inner);
        uint256[] memory result;

        /// @solidity memory-safe-assembly
        assembly {
            result := store
        }

        return result;
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.7.0) (access/Ownable.sol)

pragma solidity ^0.8.0;

import "../utils/ContextUpgradeable.sol";
import "../proxy/utils/Initializable.sol";

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

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

    /**
     * @dev Initializes the contract setting the deployer as the initial owner.
     */
    function __Ownable_init() internal onlyInitializing {
        __Ownable_init_unchained();
    }

    function __Ownable_init_unchained() internal onlyInitializing {
        _transferOwnership(_msgSender());
    }

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

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

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

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

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

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

    /**
     * @dev This empty reserved space is put in place to allow future versions to add new
     * variables without shifting down storage in the inheritance chain.
     * See https://docs.openzeppelin.com/contracts/4.x/upgradeable#storage_gaps
     */
    uint256[49] private __gap;
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (security/ReentrancyGuard.sol)

pragma solidity ^0.8.0;
import "../proxy/utils/Initializable.sol";

/**
 * @dev Contract module that helps prevent reentrant calls to a function.
 *
 * Inheriting from `ReentrancyGuard` will make the {nonReentrant} modifier
 * available, which can be applied to functions to make sure there are no nested
 * (reentrant) calls to them.
 *
 * Note that because there is a single `nonReentrant` guard, functions marked as
 * `nonReentrant` may not call one another. This can be worked around by making
 * those functions `private`, and then adding `external` `nonReentrant` entry
 * points to them.
 *
 * TIP: If you would like to learn more about reentrancy and alternative ways
 * to protect against it, check out our blog post
 * https://blog.openzeppelin.com/reentrancy-after-istanbul/[Reentrancy After Istanbul].
 */
abstract contract ReentrancyGuardUpgradeable is Initializable {
    // Booleans are more expensive than uint256 or any type that takes up a full
    // word because each write operation emits an extra SLOAD to first read the
    // slot's contents, replace the bits taken up by the boolean, and then write
    // back. This is the compiler's defense against contract upgrades and
    // pointer aliasing, and it cannot be disabled.

    // The values being non-zero value makes deployment a bit more expensive,
    // but in exchange the refund on every call to nonReentrant will be lower in
    // amount. Since refunds are capped to a percentage of the total
    // transaction's gas, it is best to keep them low in cases like this one, to
    // increase the likelihood of the full refund coming into effect.
    uint256 private constant _NOT_ENTERED = 1;
    uint256 private constant _ENTERED = 2;

    uint256 private _status;

    function __ReentrancyGuard_init() internal onlyInitializing {
        __ReentrancyGuard_init_unchained();
    }

    function __ReentrancyGuard_init_unchained() internal onlyInitializing {
        _status = _NOT_ENTERED;
    }

    /**
     * @dev Prevents a contract from calling itself, directly or indirectly.
     * Calling a `nonReentrant` function from another `nonReentrant`
     * function is not supported. It is possible to prevent this from happening
     * by making the `nonReentrant` function external, and making it call a
     * `private` function that does the actual work.
     */
    modifier nonReentrant() {
        // On the first call to nonReentrant, _notEntered will be true
        require(_status != _ENTERED, "ReentrancyGuard: reentrant call");

        // Any calls to nonReentrant after this point will fail
        _status = _ENTERED;

        _;

        // By storing the original value once again, a refund is triggered (see
        // https://eips.ethereum.org/EIPS/eip-2200)
        _status = _NOT_ENTERED;
    }

    /**
     * @dev This empty reserved space is put in place to allow future versions to add new
     * variables without shifting down storage in the inheritance chain.
     * See https://docs.openzeppelin.com/contracts/4.x/upgradeable#storage_gaps
     */
    uint256[49] private __gap;
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/Context.sol)

pragma solidity ^0.8.0;

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

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

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/introspection/IERC165.sol)

pragma solidity 0.8.10;

/**
 * @dev Interface of the ERC165 standard, as defined in the
 * https://eips.ethereum.org/EIPS/eip-165[EIP].
 *
 * Implementers can declare support of contract interfaces, which can then be
 * queried by others ({ERC165Checker}).
 *
 * For an implementation, see {ERC165}.
 */
/* solhint-disable */
interface IERC165Upgradeable {
    /**
     * @dev Returns true if this contract implements the interface defined by
     * `interfaceId`. See the corresponding
     * https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section]
     * to learn more about how these ids are created.
     *
     * This function call must use less than 30 000 gas.
     */
    function supportsInterface(bytes4 interfaceId) external view returns (bool);
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.7.0) (proxy/utils/Initializable.sol)

pragma solidity ^0.8.2;

import "../../utils/AddressUpgradeable.sol";

/**
 * @dev This is a base contract to aid in writing upgradeable contracts, or any kind of contract that will be deployed
 * behind a proxy. Since proxied contracts do not make use of a constructor, it's common to move constructor logic to an
 * external initializer function, usually called `initialize`. It then becomes necessary to protect this initializer
 * function so it can only be called once. The {initializer} modifier provided by this contract will have this effect.
 *
 * The initialization functions use a version number. Once a version number is used, it is consumed and cannot be
 * reused. This mechanism prevents re-execution of each "step" but allows the creation of new initialization steps in
 * case an upgrade adds a module that needs to be initialized.
 *
 * For example:
 *
 * [.hljs-theme-light.nopadding]
 * ```
 * contract MyToken is ERC20Upgradeable {
 *     function initialize() initializer public {
 *         __ERC20_init("MyToken", "MTK");
 *     }
 * }
 * contract MyTokenV2 is MyToken, ERC20PermitUpgradeable {
 *     function initializeV2() reinitializer(2) public {
 *         __ERC20Permit_init("MyToken");
 *     }
 * }
 * ```
 *
 * TIP: To avoid leaving the proxy in an uninitialized state, the initializer function should be called as early as
 * possible by providing the encoded function call as the `_data` argument to {ERC1967Proxy-constructor}.
 *
 * CAUTION: When used with inheritance, manual care must be taken to not invoke a parent initializer twice, or to ensure
 * that all initializers are idempotent. This is not verified automatically as constructors are by Solidity.
 *
 * [CAUTION]
 * ====
 * Avoid leaving a contract uninitialized.
 *
 * An uninitialized contract can be taken over by an attacker. This applies to both a proxy and its implementation
 * contract, which may impact the proxy. To prevent the implementation contract from being used, you should invoke
 * the {_disableInitializers} function in the constructor to automatically lock it when it is deployed:
 *
 * [.hljs-theme-light.nopadding]
 * ```
 * /// @custom:oz-upgrades-unsafe-allow constructor
 * constructor() {
 *     _disableInitializers();
 * }
 * ```
 * ====
 */
abstract contract Initializable {
    /**
     * @dev Indicates that the contract has been initialized.
     * @custom:oz-retyped-from bool
     */
    uint8 private _initialized;

    /**
     * @dev Indicates that the contract is in the process of being initialized.
     */
    bool private _initializing;

    /**
     * @dev Triggered when the contract has been initialized or reinitialized.
     */
    event Initialized(uint8 version);

    /**
     * @dev A modifier that defines a protected initializer function that can be invoked at most once. In its scope,
     * `onlyInitializing` functions can be used to initialize parent contracts. Equivalent to `reinitializer(1)`.
     */
    modifier initializer() {
        bool isTopLevelCall = !_initializing;
        require(
            (isTopLevelCall && _initialized < 1) || (!AddressUpgradeable.isContract(address(this)) && _initialized == 1),
            "Initializable: contract is already initialized"
        );
        _initialized = 1;
        if (isTopLevelCall) {
            _initializing = true;
        }
        _;
        if (isTopLevelCall) {
            _initializing = false;
            emit Initialized(1);
        }
    }

    /**
     * @dev A modifier that defines a protected reinitializer function that can be invoked at most once, and only if the
     * contract hasn't been initialized to a greater version before. In its scope, `onlyInitializing` functions can be
     * used to initialize parent contracts.
     *
     * `initializer` is equivalent to `reinitializer(1)`, so a reinitializer may be used after the original
     * initialization step. This is essential to configure modules that are added through upgrades and that require
     * initialization.
     *
     * Note that versions can jump in increments greater than 1; this implies that if multiple reinitializers coexist in
     * a contract, executing them in the right order is up to the developer or operator.
     */
    modifier reinitializer(uint8 version) {
        require(!_initializing && _initialized < version, "Initializable: contract is already initialized");
        _initialized = version;
        _initializing = true;
        _;
        _initializing = false;
        emit Initialized(version);
    }

    /**
     * @dev Modifier to protect an initialization function so that it can only be invoked by functions with the
     * {initializer} and {reinitializer} modifiers, directly or indirectly.
     */
    modifier onlyInitializing() {
        require(_initializing, "Initializable: contract is not initializing");
        _;
    }

    /**
     * @dev Locks the contract, preventing any future reinitialization. This cannot be part of an initializer call.
     * Calling this in the constructor of a contract will prevent that contract from being initialized or reinitialized
     * to any version. It is recommended to use this to lock implementation contracts that are designed to be called
     * through proxies.
     */
    function _disableInitializers() internal virtual {
        require(!_initializing, "Initializable: contract is initializing");
        if (_initialized < type(uint8).max) {
            _initialized = type(uint8).max;
            emit Initialized(type(uint8).max);
        }
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.7.0) (utils/Address.sol)

pragma solidity ^0.8.1;

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

        return account.code.length > 0;
    }

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

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

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

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

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

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

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

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

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

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

    /**
     * @dev Tool to verifies that a low level call was successful, and revert if it wasn't, either by bubbling the
     * revert reason using the provided one.
     *
     * _Available since v4.3._
     */
    function verifyCallResult(
        bool success,
        bytes memory returndata,
        string memory errorMessage
    ) internal pure returns (bytes memory) {
        if (success) {
            return returndata;
        } else {
            // Look for revert reason and bubble it up if present
            if (returndata.length > 0) {
                // The easiest way to bubble the revert reason is using memory via assembly
                /// @solidity memory-safe-assembly
                assembly {
                    let returndata_size := mload(returndata)
                    revert(add(32, returndata), returndata_size)
                }
            } else {
                revert(errorMessage);
            }
        }
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/Context.sol)

pragma solidity ^0.8.0;
import "../proxy/utils/Initializable.sol";

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

    function __Context_init_unchained() internal onlyInitializing {
    }
    function _msgSender() internal view virtual returns (address) {
        return msg.sender;
    }

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

    /**
     * @dev This empty reserved space is put in place to allow future versions to add new
     * variables without shifting down storage in the inheritance chain.
     * See https://docs.openzeppelin.com/contracts/4.x/upgradeable#storage_gaps
     */
    uint256[50] private __gap;
}

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

/**
 * @dev Utilities for metadata encryption and decryption
 * @author highlight.xyz
 */
abstract contract MetadataEncryption {
    /// @dev See: https://ethereum.stackexchange.com/questions/69825/decrypt-message-on-chain
    function encryptDecrypt(bytes memory data, bytes calldata key) public pure returns (bytes memory result) {
        // Store data length on stack for later use
        uint256 length = data.length;

        // solhint-disable-next-line no-inline-assembly
        assembly {
            // Set result to free memory pointer
            result := mload(0x40)
            // Increase free memory pointer by lenght + 32
            mstore(0x40, add(add(result, length), 32))
            // Set result length
            mstore(result, length)
        }

        // Iterate over the data stepping by 32 bytes
        for (uint256 i = 0; i < length; i += 32) {
            // Generate hash of the key and offset
            bytes32 hash = keccak256(abi.encodePacked(key, i));

            bytes32 chunk;
            // solhint-disable-next-line no-inline-assembly
            assembly {
                // Read 32-bytes data chunk
                chunk := mload(add(data, add(i, 32)))
            }
            // XOR the chunk with hash
            chunk ^= hash;
            // solhint-disable-next-line no-inline-assembly
            assembly {
                // Write 32-byte encrypted chunk
                mstore(add(result, add(i, 32)), chunk)
            }
        }
    }

    function _sliceUint(bytes memory bs, uint256 start) internal pure returns (uint256) {
        require(bs.length >= start + 32, "slicing out of range");
        uint256 x;
        assembly {
            x := mload(add(bs, add(0x20, start)))
        }
        return x;
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.7.0) (token/ERC721/extensions/ERC721URIStorage.sol)

pragma solidity 0.8.10;

import "../../erc721/erc721a/ERC721AUpgradeable.sol";
import "@openzeppelin/contracts-upgradeable/proxy/utils/Initializable.sol";
import "@openzeppelin/contracts-upgradeable/utils/StringsUpgradeable.sol";

/**
 * @title Appending URI storage utilities onto template ERC721 contract
 * @author highlight.xyz and OpenZeppelin
 * @dev ERC721 token with storage based token URI management. OpenZeppelin template edited by Highlight
 */
/* solhint-disable */
abstract contract ERC721URIStorageUpgradeable is Initializable, ERC721AUpgradeable {
    /**
     * @notice Throw when token doesn't exist
     */
    error TokenDoesNotExist();

    function __ERC721URIStorage_init() internal onlyInitializing {}

    function __ERC721URIStorage_init_unchained() internal onlyInitializing {}

    using StringsUpgradeable for uint256;

    // Optional mapping for token URIs
    mapping(uint256 => string) internal _tokenURIs;

    /**
     * @dev Hashed rotation key data
     */
    bytes internal _hashedRotationKeyData;

    /**
     * @dev Hashed base uri data
     */
    bytes internal _hashedBaseURIData;

    /**
     * @dev Rotation key
     */
    uint256 internal _rotationKey;

    /**
     * @dev Contract baseURI
     */
    string public baseURI;

    /**
     @notice Emitted when base uri is set
     * @param oldBaseUri Old base uri
     * @param newBaseURI New base uri
     */
    event BaseURISet(string oldBaseUri, string newBaseURI);

    /**
     * @dev Set contract baseURI
     */
    function _setBaseURI(string memory newBaseURI) internal {
        emit BaseURISet(baseURI, newBaseURI);

        baseURI = newBaseURI;
    }

    /**
     * @dev See {IERC721Metadata-tokenURI}.
     */
    function tokenURI(uint256 tokenId) public view virtual override returns (string memory) {
        if (!_exists(tokenId)) {
            _revert(TokenDoesNotExist.selector);
        }

        string memory _tokenURI = _tokenURIs[tokenId];

        // If there is no token URI, return the base URI.
        if (bytes(_tokenURI).length == 0) {
            return super.tokenURI(tokenId);
        }

        return _tokenURI;
    }

    /**
     * @dev See {ERC721-_burn}. This override additionally checks to see if a
     * token-specific URI was set for the token, and if so, it deletes the token URI from
     * the storage mapping.
     */
    function _burn(uint256 tokenId) internal virtual override {
        super._burn(tokenId);

        if (bytes(_tokenURIs[tokenId]).length != 0) {
            delete _tokenURIs[tokenId];
        }
    }

    function _baseURI() internal view override returns (string memory) {
        return baseURI;
    }

    /**
     * @dev This empty reserved space is put in place to allow future versions to add new
     * variables without shifting down storage in the inheritance chain.
     * See https://docs.openzeppelin.com/contracts/4.x/upgradeable#storage_gaps
     */
    uint256[49] private __gap;
}

// SPDX-License-Identifier: MIT
// ERC721A Contracts v4.2.3
// Creator: Chiru Labs

pragma solidity 0.8.10;

/** solhint-disable */

import "./IERC721AUpgradeable.sol";
import { ERC721AStorage } from "./ERC721AStorage.sol";
import "@openzeppelin/contracts-upgradeable/proxy/utils/Initializable.sol";
import "@openzeppelin/contracts-upgradeable/utils/StringsUpgradeable.sol";

/**
 * @dev Interface of ERC721 token receiver.
 */
interface ERC721A__IERC721ReceiverUpgradeable {
    function onERC721Received(
        address operator,
        address from,
        uint256 tokenId,
        bytes calldata data
    ) external returns (bytes4);
}

/**
 * @title ERC721AHL
 * @ author: Chiru Labs, modified by [email protected]
 *                       (mainly to store mint quantity data in extra bits per packed ownership)
 *
 * @dev Implementation of the [ERC721](https://eips.ethereum.org/EIPS/eip-721)
 * Non-Fungible Token Standard, including the Metadata extension.
 * Optimized for lower gas during batch mints.
 *
 * Token IDs are minted in sequential order (e.g. 0, 1, 2, 3, ...)
 * starting from `_startTokenId()`.
 *
 * Assumptions:
 *
 * - An owner cannot have more than 2**64 - 1 (max value of uint64) of supply.
 * - The maximum token ID cannot exceed 2**256 - 1 (max value of uint256).
 */
contract ERC721AUpgradeable is Initializable, IERC721AUpgradeable {
    using ERC721AStorage for ERC721AStorage.Layout;
    using StringsUpgradeable for uint256;

    // =============================================================
    //                           CONSTANTS
    // =============================================================

    // Mask of an entry in packed address data.
    uint256 private constant _BITMASK_ADDRESS_DATA_ENTRY = (1 << 64) - 1;

    // The bit position of `numberMinted` in packed address data.
    uint256 private constant _BITPOS_NUMBER_MINTED = 64;

    // The bit position of `numberBurned` in packed address data.
    uint256 private constant _BITPOS_NUMBER_BURNED = 128;

    // The bit position of `aux` in packed address data.
    uint256 private constant _BITPOS_AUX = 192;

    // Mask of all 256 bits in packed address data except the 64 bits for `aux`.
    uint256 private constant _BITMASK_AUX_COMPLEMENT = (1 << 192) - 1;

    // The bit position of `startTimestamp` in packed ownership.
    uint256 private constant _BITPOS_START_TIMESTAMP = 160;

    // The bit mask of the `burned` bit in packed ownership.
    uint256 private constant _BITMASK_BURNED = 1 << 224;

    // The bit position of the `nextInitialized` bit in packed ownership.
    uint256 private constant _BITPOS_NEXT_INITIALIZED = 225;

    // The bit mask of the `nextInitialized` bit in packed ownership.
    uint256 private constant _BITMASK_NEXT_INITIALIZED = 1 << 225;

    // The bit position of `extraData` in packed ownership.
    uint256 private constant _BITPOS_EXTRA_DATA = 232;

    // Mask of all 256 bits in a packed ownership except the 24 bits for `extraData`.
    uint256 private constant _BITMASK_EXTRA_DATA_COMPLEMENT = (1 << 232) - 1;

    // The mask of the lower 160 bits for addresses.
    uint256 private constant _BITMASK_ADDRESS = (1 << 160) - 1;

    uint256 private constant _UINT_24_MAX = 16777216;

    // The `Transfer` event signature is given by:
    // `keccak256(bytes("Transfer(address,address,uint256)"))`.
    bytes32 private constant _TRANSFER_EVENT_SIGNATURE =
        0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef;

    // =============================================================
    //                          CONSTRUCTOR
    // =============================================================

    function __ERC721A_init(string memory name_, string memory symbol_) internal onlyInitializing {
        __ERC721A_init_unchained(name_, symbol_);
    }

    function __ERC721A_init_unchained(string memory name_, string memory symbol_) internal onlyInitializing {
        ERC721AStorage.layout()._name = name_;
        ERC721AStorage.layout()._symbol = symbol_;
        ERC721AStorage.layout()._currentIndex = _startTokenId();
    }

    /**
     * @dev Hook that is called after a set of serially-ordered token IDs
     * have been transferred.
     *
     * `startTokenId` - the first token ID to be transferred.
     *
     * Calling conditions:
     *
     * - `from` and `to` are both non-zero, since this is only invoked ont transfers
     */
    function _afterTokenTransfers(
        address from,
        address to,
        uint256 tokenId
    ) internal virtual {}

    /**
     * @dev Added by Highlight to facilitate updating of name and symbol
     */
    function _setContractMetadata(string calldata newName, string calldata newSymbol) internal {
        ERC721AStorage.layout()._name = newName;
        ERC721AStorage.layout()._symbol = newSymbol;
    }

    // =============================================================
    //                   TOKEN COUNTING OPERATIONS
    // =============================================================

    /**
     * @dev Returns the starting token ID.
     * To change the starting token ID, please override this function.
     */
    function _startTokenId() internal view virtual returns (uint256) {
        return 1;
    }

    /**
     * @dev Returns the next token ID to be minted.
     */
    function _nextTokenId() internal view virtual returns (uint256) {
        return ERC721AStorage.layout()._currentIndex;
    }

    /**
     * @dev Returns the total number of tokens in existence.
     * Burned tokens will reduce the count.
     * To get the total number of tokens minted, please see {_totalMinted}.
     */
    function totalSupply() external view virtual override returns (uint256) {
        // Counter underflow is impossible as _burnCounter cannot be incremented
        // more than `_currentIndex - _startTokenId()` times.
        unchecked {
            return ERC721AStorage.layout()._currentIndex - ERC721AStorage.layout()._burnCounter - _startTokenId();
        }
    }

    /**
     * @dev Returns the total amount of tokens minted in the contract.
     */
    function _totalMinted() internal view virtual returns (uint256) {
        // Counter underflow is impossible as `_currentIndex` does not decrement,
        // and it is initialized to `_startTokenId()`.
        unchecked {
            return ERC721AStorage.layout()._currentIndex - _startTokenId();
        }
    }

    /**
     * @dev Returns the total number of tokens burned.
     */
    function _totalBurned() internal view virtual returns (uint256) {
        return ERC721AStorage.layout()._burnCounter;
    }

    // =============================================================
    //                    ADDRESS DATA OPERATIONS
    // =============================================================

    /**
     * @dev Returns the number of tokens in `owner`'s account.
     */
    function balanceOf(address owner) public view virtual override returns (uint256) {
        if (owner == address(0)) _revert(BalanceQueryForZeroAddress.selector);
        return ERC721AStorage.layout()._packedAddressData[owner] & _BITMASK_ADDRESS_DATA_ENTRY;
    }

    /**
     * Returns the number of tokens minted by `owner`.
     */
    function _numberMinted(address owner) internal view returns (uint256) {
        return
            (ERC721AStorage.layout()._packedAddressData[owner] >> _BITPOS_NUMBER_MINTED) & _BITMASK_ADDRESS_DATA_ENTRY;
    }

    /**
     * Returns the number of tokens burned by or on behalf of `owner`.
     */
    function _numberBurned(address owner) internal view returns (uint256) {
        return
            (ERC721AStorage.layout()._packedAddressData[owner] >> _BITPOS_NUMBER_BURNED) & _BITMASK_ADDRESS_DATA_ENTRY;
    }

    /**
     * Returns the auxiliary data for `owner`. (e.g. number of whitelist mint slots used).
     */
    function _getAux(address owner) internal view returns (uint64) {
        return uint64(ERC721AStorage.layout()._packedAddressData[owner] >> _BITPOS_AUX);
    }

    /**
     * Sets the auxiliary data for `owner`. (e.g. number of whitelist mint slots used).
     * If there are multiple variables, please pack them into a uint64.
     */
    function _setAux(address owner, uint64 aux) internal virtual {
        uint256 packed = ERC721AStorage.layout()._packedAddressData[owner];
        uint256 auxCasted;
        // Cast `aux` with assembly to avoid redundant masking.
        assembly {
            auxCasted := aux
        }
        packed = (packed & _BITMASK_AUX_COMPLEMENT) | (auxCasted << _BITPOS_AUX);
        ERC721AStorage.layout()._packedAddressData[owner] = packed;
    }

    // =============================================================
    //                            IERC165
    // =============================================================

    /**
     * @dev Returns true if this contract implements the interface defined by
     * `interfaceId`. See the corresponding
     * [EIP section](https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified)
     * to learn more about how these ids are created.
     *
     * This function call must use less than 30000 gas.
     */
    function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
        // The interface IDs are constants representing the first 4 bytes
        // of the XOR of all function selectors in the interface.
        // See: [ERC165](https://eips.ethereum.org/EIPS/eip-165)
        // (e.g. `bytes4(i.functionA.selector ^ i.functionB.selector ^ ...)`)
        return
            interfaceId == 0x01ffc9a7 || // ERC165 interface ID for ERC165.
            interfaceId == 0x80ac58cd || // ERC165 interface ID for ERC721.
            interfaceId == 0x5b5e139f; // ERC165 interface ID for ERC721Metadata.
    }

    // =============================================================
    //                        IERC721Metadata
    // =============================================================

    /**
     * @dev Returns the token collection name.
     */
    function name() public view virtual override returns (string memory) {
        return ERC721AStorage.layout()._name;
    }

    /**
     * @dev Returns the token collection symbol.
     */
    function symbol() public view virtual override returns (string memory) {
        return ERC721AStorage.layout()._symbol;
    }

    /**
     * @dev Returns the Uniform Resource Identifier (URI) for `tokenId` token.
     */
    function tokenURI(uint256 tokenId) public view virtual override returns (string memory) {
        if (!_exists(tokenId)) _revert(URIQueryForNonexistentToken.selector);

        string memory baseURI = _baseURI();
        return bytes(baseURI).length > 0 ? string(abi.encodePacked(baseURI, "/", tokenId.toString())) : "";
    }

    /**
     * @dev Base URI for computing {tokenURI}. If set, the resulting URI for each
     * token will be the concatenation of the `baseURI` and the `tokenId`. Empty
     * by default, it can be overridden in child contracts.
     */
    function _baseURI() internal view virtual returns (string memory) {
        return "";
    }

    // =============================================================
    //                     OWNERSHIPS OPERATIONS
    // =============================================================

    /**
     * @dev Returns the owner of the `tokenId` token.
     *
     * Requirements:
     *
     * - `tokenId` must exist.
     */
    function ownerOf(uint256 tokenId) public view virtual override returns (address) {
        return address(uint160(_packedOwnershipOf(tokenId)));
    }

    /**
     * @dev Gas spent here starts off proportional to the maximum mint batch size.
     * It gradually moves to O(1) as tokens get transferred around over time.
     */
    function _ownershipOf(uint256 tokenId) internal view virtual returns (TokenOwnership memory) {
        return _unpackedOwnership(_packedOwnershipOf(tokenId));
    }

    /**
     * @dev Returns the unpacked `TokenOwnership` struct at `index`.
     */
    function _ownershipAt(uint256 index) internal view virtual returns (TokenOwnership memory) {
        return _unpackedOwnership(ERC721AStorage.layout()._packedOwnerships[index]);
    }

    /**
     * @dev Returns whether the ownership slot at `index` is initialized.
     * An uninitialized slot does not necessarily mean that the slot has no owner.
     */
    function _ownershipIsInitialized(uint256 index) internal view virtual returns (bool) {
        return ERC721AStorage.layout()._packedOwnerships[index] != 0;
    }

    /**
     * @dev Initializes the ownership slot minted at `index` for efficiency purposes.
     */
    function _initializeOwnershipAt(uint256 index) internal virtual {
        if (ERC721AStorage.layout()._packedOwnerships[index] == 0) {
            ERC721AStorage.layout()._packedOwnerships[index] = _packedOwnershipOf(index);
        }
    }

    /* solhint-disable code-complexity */
    /**
     * Returns the packed ownership data of `tokenId`.
     */
    function _packedOwnershipOf(uint256 tokenId) private view returns (uint256 packed) {
        if (_startTokenId() <= tokenId) {
            packed = ERC721AStorage.layout()._packedOwnerships[tokenId];
            // If the data at the starting slot does not exist, start the scan.
            if (packed == 0) {
                // adds run-time, potentially redundant, remove soon
                if (!_exists(tokenId)) {
                    _revert(OwnerQueryForNonexistentToken.selector);
                }
                // current index tracks number of tokens, but we could mint certain tokens with different ids
                // if (tokenId >= ERC721AStorage.layout()._currentIndex)
                // _revert(OwnerQueryForNonexistentToken.selector);

                // Invariant:
                // There will always be an initialized ownership slot
                // (i.e. `ownership.addr != address(0) && ownership.burned == false`)
                // before an unintialized ownership slot
                // (i.e. `ownership.addr == address(0) && ownership.burned == false`)
                // Hence, `tokenId` will not underflow.

                // We can directly compare the packed value.
                // If the address is zero, packed will be zero.
                for (;;) {
                    unchecked {
                        if (tokenId == 0) {
                            _revert(OwnerQueryForNonexistentToken.selector);
                        }
                        packed = ERC721AStorage.layout()._packedOwnerships[--tokenId];
                    }
                    if (packed == 0) continue;
                    if (packed & _BITMASK_BURNED == 0) return packed;
                    // Otherwise, the token is burned, and we must revert.
                    // This handles the case of batch burned tokens, where only the burned bit
                    // of the starting slot is set, and remaining slots are left uninitialized.
                    _revert(OwnerQueryForNonexistentToken.selector);
                }
            }
            // Otherwise, the data exists and we can skip the scan.
            // This is possible because we have already achieved the target condition.
            // This saves 2143 gas on transfers of initialized tokens.
            // If the token is not burned, return `packed`. Otherwise, revert.
            if (packed & _BITMASK_BURNED == 0) return packed;
        }
        _revert(OwnerQueryForNonexistentToken.selector);
    }

    /* solhint-enable code-complexity */

    /**
     * @dev Returns the unpacked `TokenOwnership` struct from `packed`.
     */
    function _unpackedOwnership(uint256 packed) private pure returns (TokenOwnership memory ownership) {
        ownership.addr = address(uint160(packed));
        ownership.startTimestamp = uint64(packed >> _BITPOS_START_TIMESTAMP);
        ownership.burned = packed & _BITMASK_BURNED != 0;
        ownership.extraData = uint24(packed >> _BITPOS_EXTRA_DATA);
    }

    /**
     * @dev Packs ownership data into a single uint256.
     */
    function _packOwnershipData(address owner, uint256 flags) private view returns (uint256 result) {
        assembly {
            // Mask `owner` to the lower 160 bits, in case the upper bits somehow aren't clean.
            owner := and(owner, _BITMASK_ADDRESS)
            // `owner | (block.timestamp << _BITPOS_START_TIMESTAMP) | flags`.
            result := or(owner, or(shl(_BITPOS_START_TIMESTAMP, timestamp()), flags))
        }
    }

    /**
     * @dev Returns the `nextInitialized` flag set if `quantity` equals 1.
     */
    function _nextInitializedFlag(uint256 quantity) private pure returns (uint256 result) {
        // For branchless setting of the `nextInitialized` flag.
        assembly {
            // `(quantity == 1) << _BITPOS_NEXT_INITIALIZED`.
            result := shl(_BITPOS_NEXT_INITIALIZED, eq(quantity, 1))
        }
    }

    // =============================================================
    //                      APPROVAL OPERATIONS
    // =============================================================

    /**
     * @dev Gives permission to `to` to transfer `tokenId` token to another account. See {ERC721A-_approve}.
     *
     * Requirements:
     *
     * - The caller must own the token or be an approved operator.
     */
    function approve(address to, uint256 tokenId) public payable virtual override {
        _approve(to, tokenId, true);
    }

    /**
     * @dev Returns the account approved for `tokenId` token.
     *
     * Requirements:
     *
     * - `tokenId` must exist.
     */
    function getApproved(uint256 tokenId) public view virtual override returns (address) {
        if (!_exists(tokenId)) _revert(ApprovalQueryForNonexistentToken.selector);

        return ERC721AStorage.layout()._tokenApprovals[tokenId].value;
    }

    /**
     * @dev Approve or remove `operator` as an operator for the caller.
     * Operators can call {transferFrom} or {safeTransferFrom}
     * for any token owned by the caller.
     *
     * Requirements:
     *
     * - The `operator` cannot be the caller.
     *
     * Emits an {ApprovalForAll} event.
     */
    function setApprovalForAll(address operator, bool approved) public virtual override {
        ERC721AStorage.layout()._operatorApprovals[_msgSenderERC721A()][operator] = approved;
        emit ApprovalForAll(_msgSenderERC721A(), operator, approved);
    }

    /**
     * @dev Returns if the `operator` is allowed to manage all of the assets of `owner`.
     *
     * See {setApprovalForAll}.
     */
    function isApprovedForAll(address owner, address operator) public view virtual override returns (bool) {
        return ERC721AStorage.layout()._operatorApprovals[owner][operator];
    }

    function _minted(uint256 tokenId) internal view virtual returns (bool result) {
        if (_startTokenId() <= tokenId) {
            uint256 initialTokenId = tokenId;
            uint24 mintQuantity;
            while (
                (mintQuantity = uint24((ERC721AStorage.layout()._packedOwnerships[tokenId]) >> _BITPOS_EXTRA_DATA)) == 0
            ) {
                // edited to avoid underflow
                if (tokenId == 0) {
                    return false;
                }
                --tokenId;
            }

            // if the mint quantity at the number we landed at does extend to the initially queried tokenId,
            // the initially queried tokenId has been minted
            if (uint24(initialTokenId - tokenId) < mintQuantity) {
                return true;
            }
        }
    }

    /**
     * @dev Returns whether `tokenId` exists.
     *
     * Tokens can be managed by their owner or approved accounts via {approve} or {setApprovalForAll}.
     *
     * Tokens start existing when they are minted. See {_mint}.
     */
    function _exists(uint256 tokenId) internal view virtual returns (bool result) {
        if (_startTokenId() <= tokenId) {
            uint256 packed = ERC721AStorage.layout()._packedOwnerships[tokenId];
            // not burned, and minted (calculate burn first, to avoid minted call if token has been burned)
            result = ((packed & _BITMASK_BURNED) == 0) && _minted(tokenId);
        }
    }

    /**
     * @dev Returns whether `spender` is allowed to manage `tokenId`.
     *
     * Requirements:
     *
     * - `tokenId` must exist.
     */
    function _isApprovedOrOwner(address spender, uint256 tokenId) internal view virtual returns (bool) {
        address owner = ownerOf(tokenId);
        return (isApprovedForAll(owner, spender) || _isSenderApprovedOrOwner(getApproved(tokenId), owner, spender));
    }

    /**
     * @dev Returns whether `msgSender` is equal to `approvedAddress` or `owner`.
     */
    function _isSenderApprovedOrOwner(
        address approvedAddress,
        address owner,
        address msgSender
    ) private pure returns (bool result) {
        assembly {
            // Mask `owner` to the lower 160 bits, in case the upper bits somehow aren't clean.
            owner := and(owner, _BITMASK_ADDRESS)
            // Mask `msgSender` to the lower 160 bits, in case the upper bits somehow aren't clean.
            msgSender := and(msgSender, _BITMASK_ADDRESS)
            // `msgSender == owner || msgSender == approvedAddress`.
            result := or(eq(msgSender, owner), eq(msgSender, approvedAddress))
        }
    }

    /**
     * @dev Returns the storage slot and value for the approved address of `tokenId`.
     */
    function _getApprovedSlotAndAddress(uint256 tokenId)
        private
        view
        returns (uint256 approvedAddressSlot, address approvedAddress)
    {
        ERC721AStorage.TokenApprovalRef storage tokenApproval = ERC721AStorage.layout()._tokenApprovals[tokenId];
        // The following is equivalent to `approvedAddress = _tokenApprovals[tokenId].value`.
        assembly {
            approvedAddressSlot := tokenApproval.slot
            approvedAddress := sload(approvedAddressSlot)
        }
    }

    // =============================================================
    //                      TRANSFER OPERATIONS
    // =============================================================

    /**
     * @dev Transfers `tokenId` from `from` to `to`.
     *
     * Requirements:
     *
     * - `from` cannot be the zero address.
     * - `to` cannot be the zero address.
     * - `tokenId` token must be owned by `from`.
     * - If the caller is not `from`, it must be approved to move this token
     * by either {approve} or {setApprovalForAll}.
     *
     * Emits a {Transfer} event.
     */
    function transferFrom(
        address from,
        address to,
        uint256 tokenId
    ) public payable virtual override {
        uint256 prevOwnershipPacked = _packedOwnershipOf(tokenId);

        // Mask `from` to the lower 160 bits, in case the upper bits somehow aren't clean.
        from = address(uint160(uint256(uint160(from)) & _BITMASK_ADDRESS));

        if (address(uint160(prevOwnershipPacked)) != from) _revert(TransferFromIncorrectOwner.selector);

        (uint256 approvedAddressSlot, address approvedAddress) = _getApprovedSlotAndAddress(tokenId);

        // The nested ifs save around 20+ gas over a compound boolean condition.
        if (!_isSenderApprovedOrOwner(approvedAddress, from, _msgSenderERC721A()))
            if (!isApprovedForAll(from, _msgSenderERC721A())) _revert(TransferCallerNotOwnerNorApproved.selector);

        // Clear approvals from the previous owner.
        assembly {
            if approvedAddress {
                // This is equivalent to `delete _tokenApprovals[tokenId]`.
                sstore(approvedAddressSlot, 0)
            }
        }

        // Underflow of the sender's balance is impossible because we check for
        // ownership above and the recipient's balance can't realistically overflow.
        // Counter overflow is incredibly unrealistic as `tokenId` would have to be 2**256.
        unchecked {
            // We can directly increment and decrement the balances.
            --ERC721AStorage.layout()._packedAddressData[from]; // Updates: `balance -= 1`.
            ++ERC721AStorage.layout()._packedAddressData[to]; // Updates: `balance += 1`.

            // Updates:
            // - `address` to the next owner.
            // - `startTimestamp` to the timestamp of transfering.
            // - `burned` to `false`.
            // - `nextInitialized` to `true`.
            ERC721AStorage.layout()._packedOwnerships[tokenId] = _packOwnershipData(
                to,
                _BITMASK_NEXT_INITIALIZED | _nextExtraData(from, to, prevOwnershipPacked, 0)
            );

            // If the next slot may not have been initialized (i.e. `nextInitialized == false`) .
            if (prevOwnershipPacked & _BITMASK_NEXT_INITIALIZED == 0) {
                uint256 nextTokenId = tokenId + 1;
                // If the next slot's address is zero and not burned (i.e. packed value is zero).
                if (ERC721AStorage.layout()._packedOwnerships[nextTokenId] == 0) {
                    // If the next slot exists
                    if (_minted(nextTokenId)) {
                        // remove extra data from this
                        // Initialize the next slot to maintain correctness for `ownerOf(tokenId + 1)`.

                        // remove mint quantity to preserve original mint spots
                        ERC721AStorage.layout()._packedOwnerships[nextTokenId] = _removeExtraData(prevOwnershipPacked);
                    }
                }
            }
        }

        // Mask `to` to the lower 160 bits, in case the upper bits somehow aren't clean.
        uint256 toMasked = uint256(uint160(to)) & _BITMASK_ADDRESS;
        assembly {
            // Emit the `Transfer` event.
            log4(
                0, // Start of data (0, since no data).
                0, // End of data (0, since no data).
                _TRANSFER_EVENT_SIGNATURE, // Signature.
                from, // `from`.
                toMasked, // `to`.
                tokenId // `tokenId`.
            )
        }
        if (toMasked == 0) _revert(TransferToZeroAddress.selector);

        _afterTokenTransfers(from, to, tokenId);
    }

    /**
     * @dev Equivalent to `safeTransferFrom(from, to, tokenId, '')`.
     */
    function safeTransferFrom(
        address from,
        address to,
        uint256 tokenId
    ) public payable virtual override {
        safeTransferFrom(from, to, tokenId, "");
    }

    /**
     * @dev Safely transfers `tokenId` token from `from` to `to`.
     *
     * Requirements:
     *
     * - `from` cannot be the zero address.
     * - `to` cannot be the zero address.
     * - `tokenId` token must exist and be owned by `from`.
     * - If the caller is not `from`, it must be approved to move this token
     * by either {approve} or {setApprovalForAll}.
     * - If `to` refers to a smart contract, it must implement
     * {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
     *
     * Emits a {Transfer} event.
     */
    function safeTransferFrom(
        address from,
        address to,
        uint256 tokenId,
        bytes memory _data
    ) public payable virtual override {
        transferFrom(from, to, tokenId);
        if (to.code.length != 0)
            if (!_checkContractOnERC721Received(from, to, tokenId, _data)) {
                _revert(TransferToNonERC721ReceiverImplementer.selector);
            }
    }

    /**
     * @dev Private function to invoke {IERC721Receiver-onERC721Received} on a target contract.
     *
     * `from` - Previous owner of the given token ID.
     * `to` - Target address that will receive the token.
     * `tokenId` - Token ID to be transferred.
     * `_data` - Optional data to send along with the call.
     *
     * Returns whether the call correctly returned the expected magic value.
     */
    function _checkContractOnERC721Received(
        address from,
        address to,
        uint256 tokenId,
        bytes memory _data
    ) private returns (bool) {
        try
            ERC721A__IERC721ReceiverUpgradeable(to).onERC721Received(_msgSenderERC721A(), from, tokenId, _data)
        returns (bytes4 retval) {
            return retval == ERC721A__IERC721ReceiverUpgradeable(to).onERC721Received.selector;
        } catch (bytes memory reason) {
            if (reason.length == 0) {
                _revert(TransferToNonERC721ReceiverImplementer.selector);
            }
            assembly {
                revert(add(32, reason), mload(reason))
            }
        }
    }

    // =============================================================
    //                        MINT OPERATIONS
    // =============================================================

    /**
     * @dev Mints `quantity` tokens and transfers them to `to`.
     *
     * Requirements:
     *
     * - `to` cannot be the zero address.
     * - `quantity` must be greater than 0.
     *
     * Emits a {Transfer} event for each mint.
     */
    function _mint(
        address to,
        uint256 quantity,
        uint256 startTokenId,
        uint256 currentIndex
    ) internal virtual {
        if (quantity >= _UINT_24_MAX) {
            _revert(QuantityTooLarge.selector);
        }
        if (currentIndex == 0) {
            currentIndex = ERC721AStorage.layout()._currentIndex;
        }
        if (startTokenId == 0) {
            startTokenId = currentIndex;
        } else {
            // only path that selects token ids erratically (collector's choice series) runs _mint per token,
            // so no need to check _minted for consecutive token ids here
            if (_minted(startTokenId)) {
                _revert(TokenMintedAlready.selector);
            }
        }
        if (quantity == 0) _revert(MintZeroQuantity.selector);

        // Overflows are incredibly unrealistic.
        // `balance` and `numberMinted` have a maximum limit of 2**64.
        // `tokenId` has a maximum limit of 2**256.
        unchecked {
            // Updates:
            // - `address` to the owner.
            // - `startTimestamp` to the timestamp of minting.
            // - `burned` to `false`.
            // - `nextInitialized` to `quantity == 1`.
            ERC721AStorage.layout()._packedOwnerships[startTokenId] = _packOwnershipData(
                to,
                _nextInitializedFlag(quantity) | _nextExtraData(address(0), to, 0, uint24(quantity))
            );

            // Updates:
            // - `balance += quantity`.
            // - `numberMinted += quantity`.
            //
            // We can directly add to the `balance` and `numberMinted`.
            ERC721AStorage.layout()._packedAddressData[to] += quantity * ((1 << _BITPOS_NUMBER_MINTED) | 1);

            // Mask `to` to the lower 160 bits, in case the upper bits somehow aren't clean.
            uint256 toMasked = uint256(uint160(to)) & _BITMASK_ADDRESS;

            if (toMasked == 0) _revert(MintToZeroAddress.selector);

            uint256 end = startTokenId + quantity;
            uint256 tokenId = startTokenId;

            do {
                assembly {
                    // Emit the `Transfer` event.
                    log4(
                        0, // Start of data (0, since no data).
                        0, // End of data (0, since no data).
                        _TRANSFER_EVENT_SIGNATURE, // Signature.
                        0, // `address(0)`.
                        toMasked, // `to`.
                        tokenId // `tokenId`.
                    )
                }
                // The `!=` check ensures that large values of `quantity`
                // that overflows uint256 will make the loop run out of gas.
            } while (++tokenId != end);

            ERC721AStorage.layout()._currentIndex = currentIndex + quantity;
        }
    }

    // =============================================================
    //                       APPROVAL OPERATIONS
    // =============================================================

    /**
     * @dev Equivalent to `_approve(to, tokenId, false)`.
     */
    function _approve(address to, uint256 tokenId) internal virtual {
        _approve(to, tokenId, false);
    }

    /**
     * @dev Gives permission to `to` to transfer `tokenId` token to another account.
     * The approval is cleared when the token is transferred.
     *
     * Only a single account can be approved at a time, so approving the
     * zero address clears previous approvals.
     *
     * Requirements:
     *
     * - `tokenId` must exist.
     *
     * Emits an {Approval} event.
     */
    function _approve(
        address to,
        uint256 tokenId,
        bool approvalCheck
    ) internal virtual {
        address owner = ownerOf(tokenId);

        if (approvalCheck && _msgSenderERC721A() != owner)
            if (!isApprovedForAll(owner, _msgSenderERC721A())) {
                _revert(ApprovalCallerNotOwnerNorApproved.selector);
            }

        ERC721AStorage.layout()._tokenApprovals[tokenId].value = to;
        emit Approval(owner, to, tokenId);
    }

    // =============================================================
    //                        BURN OPERATIONS
    // =============================================================

    /**
     * @dev Equivalent to `_burn(tokenId, false)`.
     */
    function _burn(uint256 tokenId) internal virtual {
        _burn(tokenId, false);
    }

    /**
     * @dev Destroys `tokenId`.
     * The approval is cleared when the token is burned.
     *
     * Requirements:
     *
     * - `tokenId` must exist.
     *
     * Emits a {Transfer} event.
     */
    function _burn(uint256 tokenId, bool approvalCheck) internal virtual {
        uint256 prevOwnershipPacked = _packedOwnershipOf(tokenId);

        address from = address(uint160(prevOwnershipPacked));

        (uint256 approvedAddressSlot, address approvedAddress) = _getApprovedSlotAndAddress(tokenId);

        if (approvalCheck) {
            // The nested ifs save around 20+ gas over a compound boolean condition.
            if (!_isSenderApprovedOrOwner(approvedAddress, from, _msgSenderERC721A()))
                if (!isApprovedForAll(from, _msgSenderERC721A())) _revert(TransferCallerNotOwnerNorApproved.selector);
        }

        // Clear approvals from the previous owner.
        assembly {
            if approvedAddress {
                // This is equivalent to `delete _tokenApprovals[tokenId]`.
                sstore(approvedAddressSlot, 0)
            }
        }

        // Underflow of the sender's balance is impossible because we check for
        // ownership above and the recipient's balance can't realistically overflow.
        // Counter overflow is incredibly unrealistic as `tokenId` would have to be 2**256.
        unchecked {
            // Updates:
            // - `balance -= 1`.
            // - `numberBurned += 1`.
            //
            // We can directly decrement the balance, and increment the number burned.
            // This is equivalent to `packed -= 1; packed += 1 << _BITPOS_NUMBER_BURNED;`.
            ERC721AStorage.layout()._packedAddressData[from] += (1 << _BITPOS_NUMBER_BURNED) - 1;

            // Updates:
            // - `address` to the last owner.
            // - `startTimestamp` to the timestamp of burning.
            // - `burned` to `true`.
            // - `nextInitialized` to `true`.
            ERC721AStorage.layout()._packedOwnerships[tokenId] = _packOwnershipData(
                from,
                (_BITMASK_BURNED | _BITMASK_NEXT_INITIALIZED) | _nextExtraData(from, address(0), prevOwnershipPacked, 0)
            );

            // If the next slot may not have been initialized (i.e. `nextInitialized == false`) .
            if (prevOwnershipPacked & _BITMASK_NEXT_INITIALIZED == 0) {
                uint256 nextTokenId = tokenId + 1;
                // If the next slot's address is zero and not burned (i.e. packed value is zero).
                if (ERC721AStorage.layout()._packedOwnerships[nextTokenId] == 0) {
                    // If the next slot exists
                    if (_minted(nextTokenId)) {
                        // Initialize the next slot to maintain correctness for `ownerOf(tokenId + 1)`.

                        // remove mint quantity to preserve original mint spots
                        ERC721AStorage.layout()._packedOwnerships[nextTokenId] = _removeExtraData(prevOwnershipPacked);
                    }
                }
            }
        }

        emit Transfer(from, address(0), tokenId);
        // Overflow not possible, as _burnCounter cannot be exceed _currentIndex times.
        unchecked {
            ERC721AStorage.layout()._burnCounter++;
        }
    }

    // =============================================================
    //                     EXTRA DATA OPERATIONS
    // =============================================================

    /**
     * @dev Remove the extra data from a packed ownership, used to preserve original mint slots
     */
    function _removeExtraData(uint256 packedOwnershipData) internal pure returns (uint256) {
        return packedOwnershipData & _BITMASK_EXTRA_DATA_COMPLEMENT;
    }

    /**
     * @dev Directly sets the extra data for the ownership data `index`.
     */
    function _setExtraDataAt(uint256 index, uint24 extraData) internal virtual {
        uint256 packed = ERC721AStorage.layout()._packedOwnerships[index];
        if (packed == 0) _revert(OwnershipNotInitializedForExtraData.selector);
        uint256 extraDataCasted;
        // Cast `extraData` with assembly to avoid redundant masking.
        assembly {
            extraDataCasted := extraData
        }
        packed = (packed & _BITMASK_EXTRA_DATA_COMPLEMENT) | (extraDataCasted << _BITPOS_EXTRA_DATA);
        ERC721AStorage.layout()._packedOwnerships[index] = packed;
    }

    /**
     * @dev Called during each token transfer to set the 24bit `extraData` field.
     * Intended to be overridden by the cosumer contract.
     *
     * `previousExtraData` - the value of `extraData` before transfer.
     *
     * Calling conditions:
     *
     * - When `from` and `to` are both non-zero, `from`'s `tokenId` will be
     * transferred to `to`.
     * - When `from` is zero, `tokenId` will be minted for `to`.
     * - When `to` is zero, `tokenId` will be burned by `from`.
     * - `from` and `to` are never both zero.
     */
    function _extraData(
        address from,
        address to,
        uint24 previousExtraData,
        uint24 quantityMinted
    ) internal view virtual returns (uint24) {
        if (from == address(0) && to != address(0)) {
            // mint
            return quantityMinted;
        } else {
            return previousExtraData;
        }
    }

    /**
     * @dev Returns the next extra data for the packed ownership data.
     * The returned result is shifted into position.
     */
    function _nextExtraData(
        address from,
        address to,
        uint256 prevOwnershipPacked,
        uint24 quantityMinted
    ) private view returns (uint256) {
        uint24 extraData = uint24(prevOwnershipPacked >> _BITPOS_EXTRA_DATA);
        return uint256(_extraData(from, to, extraData, quantityMinted)) << _BITPOS_EXTRA_DATA;
    }

    // =============================================================
    //                       OTHER OPERATIONS
    // =============================================================

    /**
     * @dev Returns the message sender (defaults to `msg.sender`).
     *
     * If you are writing GSN compatible contracts, you need to override this function.
     */
    function _msgSenderERC721A() internal view virtual returns (address) {
        return msg.sender;
    }

    /**
     * @dev Converts a uint256 to its ASCII string decimal representation.
     */
    function _toString(uint256 value) internal pure virtual returns (string memory str) {
        assembly {
            // The maximum value of a uint256 contains 78 digits (1 byte per digit), but
            // we allocate 0xa0 bytes to keep the free memory pointer 32-byte word aligned.
            // We will need 1 word for the trailing zeros padding, 1 word for the length,
            // and 3 words for a maximum of 78 digits. Total: 5 * 0x20 = 0xa0.
            let m := add(mload(0x40), 0xa0)
            // Update the free memory pointer to allocate.
            mstore(0x40, m)
            // Assign the `str` to the end.
            str := sub(m, 0x20)
            // Zeroize the slot after the string.
            mstore(str, 0)

            // Cache the end of the memory to calculate the length later.
            let end := str

            // We write the string from rightmost digit to leftmost digit.
            // The following is essentially a do-while loop that also handles the zero case.
            // prettier-ignore
            for { let temp := value } 1 {} {
                str := sub(str, 1)
                // Write the character to the pointer.
                // The ASCII index of the '0' character is 48.
                mstore8(str, add(48, mod(temp, 10)))
                // Keep dividing `temp` until zero.
                temp := div(temp, 10)
                // prettier-ignore
                if iszero(temp) { break }
            }

            let length := sub(end, str)
            // Move the pointer 32 bytes leftwards to make room for the length.
            str := sub(str, 0x20)
            // Store the length.
            mstore(str, length)
        }
    }

    /**
     * @dev For more efficient reverts.
     */
    function _revert(bytes4 errorSelector) internal pure virtual {
        assembly {
            mstore(0x00, errorSelector)
            revert(0x00, 0x04)
        }
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.7.0) (utils/Strings.sol)

pragma solidity ^0.8.0;

/**
 * @dev String operations.
 */
library StringsUpgradeable {
    bytes16 private constant _HEX_SYMBOLS = "0123456789abcdef";
    uint8 private constant _ADDRESS_LENGTH = 20;

    /**
     * @dev Converts a `uint256` to its ASCII `string` decimal representation.
     */
    function toString(uint256 value) internal pure returns (string memory) {
        // Inspired by OraclizeAPI's implementation - MIT licence
        // https://github.com/oraclize/ethereum-api/blob/b42146b063c7d6ee1358846c198246239e9360e8/oraclizeAPI_0.4.25.sol

        if (value == 0) {
            return "0";
        }
        uint256 temp = value;
        uint256 digits;
        while (temp != 0) {
            digits++;
            temp /= 10;
        }
        bytes memory buffer = new bytes(digits);
        while (value != 0) {
            digits -= 1;
            buffer[digits] = bytes1(uint8(48 + uint256(value % 10)));
            value /= 10;
        }
        return string(buffer);
    }

    /**
     * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation.
     */
    function toHexString(uint256 value) internal pure returns (string memory) {
        if (value == 0) {
            return "0x00";
        }
        uint256 temp = value;
        uint256 length = 0;
        while (temp != 0) {
            length++;
            temp >>= 8;
        }
        return toHexString(value, length);
    }

    /**
     * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation with fixed length.
     */
    function toHexString(uint256 value, uint256 length) internal pure returns (string memory) {
        bytes memory buffer = new bytes(2 * length + 2);
        buffer[0] = "0";
        buffer[1] = "x";
        for (uint256 i = 2 * length + 1; i > 1; --i) {
            buffer[i] = _HEX_SYMBOLS[value & 0xf];
            value >>= 4;
        }
        require(value == 0, "Strings: hex length insufficient");
        return string(buffer);
    }

    /**
     * @dev Converts an `address` with fixed length of 20 bytes to its not checksummed ASCII `string` hexadecimal representation.
     */
    function toHexString(address addr) internal pure returns (string memory) {
        return toHexString(uint256(uint160(addr)), _ADDRESS_LENGTH);
    }
}

// SPDX-License-Identifier: MIT
// ERC721A Contracts v4.2.3
// Creator: Chiru Labs

pragma solidity 0.8.10;

/** solhint-disable */

/**
 * @dev Interface of ERC721A.
 * @ author Chiru Labs, slightly modified by [email protected]
 */
interface IERC721AUpgradeable {
    /**
     * Quantity to mint is too large
     */
    error QuantityTooLarge();

    /**
     * Cannot re-mint token
     */
    error TokenMintedAlready();

    /**
     * The caller must own the token or be an approved operator.
     */
    error ApprovalCallerNotOwnerNorApproved();

    /**
     * The token does not exist.
     */
    error ApprovalQueryForNonexistentToken();

    /**
     * Cannot query the balance for the zero address.
     */
    error BalanceQueryForZeroAddress();

    /**
     * Cannot mint to the zero address.
     */
    error MintToZeroAddress();

    /**
     * The quantity of tokens minted must be more than zero.
     */
    error MintZeroQuantity();

    /**
     * The token does not exist.
     */
    error OwnerQueryForNonexistentToken();

    /**
     * The caller must own the token or be an approved operator.
     */
    error TransferCallerNotOwnerNorApproved();

    /**
     * The token must be owned by `from`.
     */
    error TransferFromIncorrectOwner();

    /**
     * Cannot safely transfer to a contract that does not implement the
     * ERC721Receiver interface.
     */
    error TransferToNonERC721ReceiverImplementer();

    /**
     * Cannot transfer to the zero address.
     */
    error TransferToZeroAddress();

    /**
     * The token does not exist.
     */
    error URIQueryForNonexistentToken();

    /**
     * The `quantity` minted with ERC2309 exceeds the safety limit.
     */
    error MintERC2309QuantityExceedsLimit();

    /**
     * The `extraData` cannot be set on an unintialized ownership slot.
     */
    error OwnershipNotInitializedForExtraData();

    // =============================================================
    //                            STRUCTS
    // =============================================================

    struct TokenOwnership {
        // The address of the owner.
        address addr;
        // Stores the start time of ownership with minimal overhead for tokenomics.
        uint64 startTimestamp;
        // Whether the token has been burned.
        bool burned;
        // Arbitrary data similar to `startTimestamp` that can be set via {_extraData}.
        uint24 extraData;
    }

    // =============================================================
    //                         TOKEN COUNTERS
    // =============================================================

    /**
     * @dev Returns the total number of tokens in existence.
     * Burned tokens will reduce the count.
     * To get the total number of tokens minted, please see {_totalMinted}.
     */
    function totalSupply() external view returns (uint256);

    // =============================================================
    //                            IERC165
    // =============================================================

    /**
     * @dev Returns true if this contract implements the interface defined by
     * `interfaceId`. See the corresponding
     * [EIP section](https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified)
     * to learn more about how these ids are created.
     *
     * This function call must use less than 30000 gas.
     */
    function supportsInterface(bytes4 interfaceId) external view returns (bool);

    // =============================================================
    //                            IERC721
    // =============================================================

    /**
     * @dev Emitted when `tokenId` token is transferred from `from` to `to`.
     */
    event Transfer(address indexed from, address indexed to, uint256 indexed tokenId);

    /**
     * @dev Emitted when `owner` enables `approved` to manage the `tokenId` token.
     */
    event Approval(address indexed owner, address indexed approved, uint256 indexed tokenId);

    /**
     * @dev Emitted when `owner` enables or disables
     * (`approved`) `operator` to manage all of its assets.
     */
    event ApprovalForAll(address indexed owner, address indexed operator, bool approved);

    /**
     * @dev Returns the number of tokens in `owner`'s account.
     */
    function balanceOf(address owner) external view returns (uint256 balance);

    /**
     * @dev Returns the owner of the `tokenId` token.
     *
     * Requirements:
     *
     * - `tokenId` must exist.
     */
    function ownerOf(uint256 tokenId) external view returns (address owner);

    /**
     * @dev Safely transfers `tokenId` token from `from` to `to`,
     * checking first that contract recipients are aware of the ERC721 protocol
     * to prevent tokens from being forever locked.
     *
     * Requirements:
     *
     * - `from` cannot be the zero address.
     * - `to` cannot be the zero address.
     * - `tokenId` token must exist and be owned by `from`.
     * - If the caller is not `from`, it must be have been allowed to move
     * this token by either {approve} or {setApprovalForAll}.
     * - If `to` refers to a smart contract, it must implement
     * {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
     *
     * Emits a {Transfer} event.
     */
    function safeTransferFrom(
        address from,
        address to,
        uint256 tokenId,
        bytes calldata data
    ) external payable;

    /**
     * @dev Equivalent to `safeTransferFrom(from, to, tokenId, '')`.
     */
    function safeTransferFrom(
        address from,
        address to,
        uint256 tokenId
    ) external payable;

    /**
     * @dev Transfers `tokenId` from `from` to `to`.
     *
     * WARNING: Usage of this method is discouraged, use {safeTransferFrom}
     * whenever possible.
     *
     * Requirements:
     *
     * - `from` cannot be the zero address.
     * - `to` cannot be the zero address.
     * - `tokenId` token must be owned by `from`.
     * - If the caller is not `from`, it must be approved to move this token
     * by either {approve} or {setApprovalForAll}.
     *
     * Emits a {Transfer} event.
     */
    function transferFrom(
        address from,
        address to,
        uint256 tokenId
    ) external payable;

    /**
     * @dev Gives permission to `to` to transfer `tokenId` token to another account.
     * The approval is cleared when the token is transferred.
     *
     * Only a single account can be approved at a time, so approving the
     * zero address clears previous approvals.
     *
     * Requirements:
     *
     * - The caller must own the token or be an approved operator.
     * - `tokenId` must exist.
     *
     * Emits an {Approval} event.
     */
    function approve(address to, uint256 tokenId) external payable;

    /**
     * @dev Approve or remove `operator` as an operator for the caller.
     * Operators can call {transferFrom} or {safeTransferFrom}
     * for any token owned by the caller.
     *
     * Requirements:
     *
     * - The `operator` cannot be the caller.
     *
     * Emits an {ApprovalForAll} event.
     */
    function setApprovalForAll(address operator, bool _approved) external;

    /**
     * @dev Returns the account approved for `tokenId` token.
     *
     * Requirements:
     *
     * - `tokenId` must exist.
     */
    function getApproved(uint256 tokenId) external view returns (address operator);

    /**
     * @dev Returns if the `operator` is allowed to manage all of the assets of `owner`.
     *
     * See {setApprovalForAll}.
     */
    function isApprovedForAll(address owner, address operator) external view returns (bool);

    // =============================================================
    //                        IERC721Metadata
    // =============================================================

    /**
     * @dev Returns the token collection name.
     */
    function name() external view returns (string memory);

    /**
     * @dev Returns the token collection symbol.
     */
    function symbol() external view returns (string memory);

    /**
     * @dev Returns the Uniform Resource Identifier (URI) for `tokenId` token.
     */
    function tokenURI(uint256 tokenId) external view returns (string memory);
}

// SPDX-License-Identifier: MIT

pragma solidity 0.8.10;

/** solhint-disable */

library ERC721AStorage {
    // Bypass for a `--via-ir` bug (https://github.com/chiru-labs/ERC721A/pull/364).
    struct TokenApprovalRef {
        address value;
    }

    struct Layout {
        // =============================================================
        //                            STORAGE
        // =============================================================

        // The next token ID to be minted.
        uint256 _currentIndex;
        // The number of tokens burned.
        uint256 _burnCounter;
        // Token name
        string _name;
        // Token symbol
        string _symbol;
        // Mapping from token ID to ownership details
        // An empty struct value does not necessarily mean the token is unowned.
        // See {_packedOwnershipOf} implementation for details.
        //
        // Bits Layout:
        // - [0..159]   `addr`
        // - [160..223] `startTimestamp`
        // - [224]      `burned`
        // - [225]      `nextInitialized`
        // - [232..255] `extraData`
        mapping(uint256 => uint256) _packedOwnerships;
        // Mapping owner address to address data.
        //
        // Bits Layout:
        // - [0..63]    `balance`
        // - [64..127]  `numberMinted`
        // - [128..191] `numberBurned`
        // - [192..255] `aux`
        mapping(address => uint256) _packedAddressData;
        // Mapping from token ID to approved address.
        mapping(uint256 => ERC721AStorage.TokenApprovalRef) _tokenApprovals;
        // Mapping from owner to operator approvals
        mapping(address => mapping(address => bool)) _operatorApprovals;
    }

    bytes32 internal constant _STORAGE_SLOT = keccak256("ERC721A.contracts.storage.ERC721A");

    function layout() internal pure returns (Layout storage l) {
        bytes32 slot = _STORAGE_SLOT;
        assembly {
            l.slot := slot
        }
    }
}

{
  "metadata": {
    "bytecodeHash": "none"
  },
  "optimizer": {
    "enabled": true,
    "runs": 1
  },
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "devdoc",
        "userdoc",
        "metadata",
        "abi"
      ]
    }
  },
  "libraries": {}
}

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