// File: contracts/ERC721Drop.sol



// SPDX-License-Identifier: GPL-3.0
pragma solidity ^0.8.10;

/**

 ________   _____   ____    ______      ____
/\_____  \ /\  __`\/\  _`\ /\  _  \    /\  _`\
\/____//'/'\ \ \/\ \ \ \L\ \ \ \L\ \   \ \ \/\ \  _ __   ___   _____     ____
     //'/'  \ \ \ \ \ \ ,  /\ \  __ \   \ \ \ \ \/\`'__\/ __`\/\ '__`\  /',__\
    //'/'___ \ \ \_\ \ \ \\ \\ \ \/\ \   \ \ \_\ \ \ \//\ \L\ \ \ \L\ \/\__, `\
    /\_______\\ \_____\ \_\ \_\ \_\ \_\   \ \____/\ \_\\ \____/\ \ ,__/\/\____/
    \/_______/ \/_____/\/_/\/ /\/_/\/_/    \/___/  \/_/ \/___/  \ \ \/  \/___/
                                                                 \ \_\
                                                                  \/_/

 */

import {ERC721AUpgradeable} from "erc721a-upgradeable/ERC721AUpgradeable.sol";
import {IERC2981Upgradeable, IERC165Upgradeable} from "@openzeppelin/contracts-upgradeable/interfaces/IERC2981Upgradeable.sol";
import {AddressUpgradeable} from "@openzeppelin/contracts-upgradeable/utils/AddressUpgradeable.sol";
import {AccessControlUpgradeable} from "@openzeppelin/contracts-upgradeable/access/AccessControlUpgradeable.sol";
import {ReentrancyGuardUpgradeable} from "@openzeppelin/contracts-upgradeable/security/ReentrancyGuardUpgradeable.sol";
import {MerkleProofUpgradeable} from "@openzeppelin/contracts-upgradeable/utils/cryptography/MerkleProofUpgradeable.sol";

import {IZoraFeeManager} from "./interfaces/IZoraFeeManager.sol";
import {IMetadataRenderer} from "./interfaces/IMetadataRenderer.sol";
import {IZoraDrop} from "./interfaces/IZoraDrop.sol";
import {IOwnable} from "./interfaces/IOwnable.sol";
import {OwnableSkeleton} from "./utils/OwnableSkeleton.sol";

/**
 * @notice ZORA NFT Base contract for Drops and Editions
 *
 * @dev For drops: assumes 1. linear mint order, 2. max number of mints needs to be less than max_uint64
 *       (if you have more than 18 quintillion linear mints you should probably not be using this contract)
 * @author iain@zora.co
 *
 */
contract ERC721Drop is
    ERC721AUpgradeable,
    IERC2981Upgradeable,
    ReentrancyGuardUpgradeable,
    AccessControlUpgradeable,
    IZoraDrop,
    OwnableSkeleton
{
    /// @dev This is the underlying contract version that is implemented by the interface
    uint256 private constant VERSION = 3;
    /// @dev This is the max mint batch size for the optimized ERC721A mint contract
    uint256 private constant MAX_MINT_BATCH_SIZE = 8;

    using AddressUpgradeable for address payable;

    event SalesConfigChanged(
        address indexed changedBy,
        SalesConfiguration salesConfig
    );

    event FundsRecipientChanged(
        address indexed newAddress,
        address indexed changedBy
    );

    event OpenMintFinalized(address indexed sender, uint256 numberOfMints);

    /// @notice Error string constants
    string private constant SOLD_OUT = "Sold out";
    string private constant TOO_MANY = "Too many";

    /// @notice Access control roles
    bytes32 public immutable MINTER_ROLE = keccak256("MINTER");
    bytes32 public immutable SALES_MANAGER_ROLE = keccak256("SALES_MANAGER");

    /// @dev Returns the version of the contract.
    function contractVersion() external pure returns (uint256) {
        return VERSION;
    }

    /// @notice General configuration for NFT Minting and bookkeeping
    struct Configuration {
        /// @dev Metadata renderer
        IMetadataRenderer metadataRenderer;
        /// @dev Total size of edition that can be minted
        uint64 editionSize;
        /// @dev Royalty amount in bps
        uint16 royaltyBPS;
        /// @dev Funds recipient for sale
        address payable fundsRecipient;
    }

    /// @notice Sales states and configuration
    /// @dev Uses 3 storage slots
    struct SalesConfiguration {
        /// @dev Public sale price
        uint104 publicSalePrice;
        /// @dev Max purchase number per txn
        uint32 maxSalePurchasePerAddress;
        /// @dev uint64 type allows for dates into 292 billion years

        // Storage: uses 1 slot

        /// @dev Public sale start timestamp
        uint64 publicSaleStart;
        /// @dev Public sale end timestamp
        uint64 publicSaleEnd;
        /// @dev Presale start timestamp
        uint64 presaleStart;
        /// @dev Presale end timestamp
        uint64 presaleEnd;
        // Storage: uses 1 slot

        /// @dev Presale merkle root
        bytes32 presaleMerkleRoot;
    }

    /// @notice Configuration for NFT minting contract storage
    Configuration public config;

    /// @notice Sales configuration
    SalesConfiguration public salesConfig;

    /// @dev ZORA V3 transfer helper address for auto-approval
    address private immutable zoraERC721TransferHelper;

    /// @dev Mapping for presale mint counts by address to allow public mint limit
    mapping(address => uint256) public presaleMintsByAddress;

    /// @dev Zora Fee Manager address
    IZoraFeeManager public immutable zoraFeeManager;

    /// @notice Only allow for users with admin access
    modifier onlyAdmin() {
        require(hasRole(DEFAULT_ADMIN_ROLE, msg.sender), "Only admin allowed");

        _;
    }

    /// @notice Allows user to mint tokens at a quantity
    modifier canMintTokens(uint256 quantity) {
        require(quantity + _totalMinted() <= config.editionSize, TOO_MANY);

        _;
    }

    function _presaleActive() internal view returns (bool) {
        return
            salesConfig.presaleStart <= block.timestamp &&
            salesConfig.presaleEnd > block.timestamp;
    }

    function _publicSaleActive() internal view returns (bool) {
        return
            salesConfig.publicSaleStart <= block.timestamp &&
            salesConfig.publicSaleEnd > block.timestamp;
    }

    /// @notice Presale active
    modifier onlyPresaleActive() {
        require(_presaleActive(), "Presale inactive");

        _;
    }

    /// @notice Public sale active
    modifier onlyPublicSaleActive() {
        require(_publicSaleActive(), "Sale inactive");

        _;
    }

    /// @notice Getter for last minted token ID (gets next token id and subtracts 1)
    function _lastMintedTokenId() internal view returns (uint256) {
        return _currentIndex - 1;
    }

    /// @notice Start token ID for minting (1-100 vs 0-99)
    function _startTokenId() internal pure override returns (uint256) {
        return 1;
    }

    /// @notice Only a given role has access or admin
    /// @param role role to check for alongside the admin role
    modifier onlyRoleOrAdmin(bytes32 role) {
        require(
            hasRole(DEFAULT_ADMIN_ROLE, msg.sender) ||
                hasRole(role, msg.sender),
            "Does not have proper role or admin"
        );

        _;
    }

    /// @notice Global constructor – these variables will not change with further proxy deploys
    /// @param _zoraFeeManager Zora Fee Manager
    /// @param _zoraERC721TransferHelper Transfer helper
    constructor(
        IZoraFeeManager _zoraFeeManager,
        address _zoraERC721TransferHelper
    ) {
        zoraFeeManager = _zoraFeeManager;
        zoraERC721TransferHelper = _zoraERC721TransferHelper;
    }

    ///  @dev Function to create a new edition. Can only be called by the allowed creator
    ///       Sets the only allowed minter to the address that creates/owns the edition.
    ///       This can be re-assigned or updated later
    ///  @param _owner User that owns and can mint the edition, gets royalty and sales payouts and can update the base url if needed.
    ///  @param _fundsRecipient Wallet/user that receives funds from sale
    ///  @param _editionSize Number of editions that can be minted in total. If 0, unlimited editions can be minted.
    ///  @param _royaltyBPS BPS of the royalty set on the contract. Can be 0 for no royalty.
    function initialize(
        string memory _name,
        string memory _symbol,
        address _owner,
        address payable _fundsRecipient,
        uint64 _editionSize,
        uint16 _royaltyBPS,
        IMetadataRenderer _metadataRenderer,
        bytes memory _metadataRendererInit
    ) public initializer {
        // Setup ERC721A
        __ERC721A_init(_name, _symbol);
        // Setup access control
        __AccessControl_init();
        // Setup re-entracy guard
        __ReentrancyGuard_init();
        // Setup the owner role
        _setupRole(DEFAULT_ADMIN_ROLE, _owner);
        // Set ownership to original sender of contract call
        _setOwner(_owner);

        require(
            config.royaltyBPS < 50_01,
            "Royalty BPS cannot be greater than 50%"
        );

        config.editionSize = _editionSize;
        config.metadataRenderer = _metadataRenderer;
        config.royaltyBPS = _royaltyBPS;
        config.fundsRecipient = _fundsRecipient;
        _metadataRenderer.initializeWithData(_metadataRendererInit);
    }

    /// @dev Getter for admin role associated with the contract to handle metadata
    /// @return boolean if address is admin
    function isAdmin(address user) external view returns (bool) {
        return hasRole(DEFAULT_ADMIN_ROLE, user);
    }

    /// @param tokenId Token ID to burn
    /// @notice User burn function for token id
    function burn(uint256 tokenId) public {
        _burn(tokenId, true);
    }

    /// @dev Get royalty information for token
    /// @param _salePrice Sale price for the token
    function royaltyInfo(uint256, uint256 _salePrice)
        external
        view
        override
        returns (address receiver, uint256 royaltyAmount)
    {
        if (config.fundsRecipient == address(0x0)) {
            return (config.fundsRecipient, 0);
        }
        return (
            config.fundsRecipient,
            (_salePrice * config.royaltyBPS) / 10_000
        );
    }

    /// @notice Sale details
    /// @return IZoraDrop.SaleDetails sale information details
    function saleDetails()
        external
        view
        returns (IZoraDrop.SaleDetails memory)
    {
        return
            IZoraDrop.SaleDetails({
                publicSaleActive: _publicSaleActive(),
                presaleActive: _presaleActive(),
                presaleStart: salesConfig.presaleStart,
                presaleEnd: salesConfig.presaleEnd,
                publicSaleStart: salesConfig.publicSaleStart,
                publicSaleEnd: salesConfig.publicSaleEnd,
                presaleMerkleRoot: salesConfig.presaleMerkleRoot,
                publicSalePrice: salesConfig.publicSalePrice,
                totalMinted: _totalMinted(),
                maxSupply: config.editionSize,
                maxSalePurchasePerAddress: salesConfig.maxSalePurchasePerAddress
            });
    }

    /// @dev Number of NFTs the user has minted per address
    /// @param minter to get counts for
    function mintedPerAddress(address minter)
        external
        view
        override
        returns (IZoraDrop.AddressMintDetails memory)
    {
        return
            IZoraDrop.AddressMintDetails({
                presaleMints: presaleMintsByAddress[minter],
                publicMints: _numberMinted(minter) -
                    presaleMintsByAddress[minter],
                totalMints: _numberMinted(minter)
            });
    }

    /// @dev Setup auto-approval for Zora v3 access to sell NFT
    ///      Still requires approval for module
    /// @param nftOwner owner of the nft
    /// @param operator operator wishing to transfer/burn/etc the NFTs
    function isApprovedForAll(address nftOwner, address operator)
        public
        view
        override(ERC721AUpgradeable)
        returns (bool)
    {
        if (operator == zoraERC721TransferHelper) {
            return true;
        }
        return super.isApprovedForAll(nftOwner, operator);
    }

    /// @dev Gets the zora fee for amount of withdraw
    /// @param amount amount of funds to get fee for
    function zoraFeeForAmount(uint256 amount)
        public
        returns (address payable, uint256)
    {
        (address payable recipient, uint256 bps) = zoraFeeManager
            .getZORAWithdrawFeesBPS(address(this));
        return (recipient, (amount * bps) / 10_000);
    }

    /**
     *** ---------------------------------- ***
     ***                                    ***
     ***     PUBLIC MINTING FUNCTIONS       ***
     ***                                    ***
     *** ---------------------------------- ***
     ***
     ***/

    /**
      @dev This allows the user to purchase a edition edition
           at the given price in the contract.
     */
    function purchase(uint256 quantity)
        external
        payable
        nonReentrant
        canMintTokens(quantity)
        onlyPublicSaleActive
        returns (uint256)
    {
        uint256 salePrice = salesConfig.publicSalePrice;

        require(msg.value == salePrice * quantity, "Wrong price");
        require(
            _numberMinted(_msgSender()) +
                quantity -
                presaleMintsByAddress[_msgSender()] <=
                salesConfig.maxSalePurchasePerAddress,
            TOO_MANY
        );

        _mintNFTs(_msgSender(), quantity);
        uint256 firstMintedTokenId = _lastMintedTokenId() - quantity;

        emit IZoraDrop.Sale({
            to: _msgSender(),
            quantity: quantity,
            pricePerToken: salePrice,
            firstPurchasedTokenId: firstMintedTokenId
        });
        return firstMintedTokenId;
    }

    /// @notice Function to mint NFTs
    /// @dev (important: Does not enforce max supply limit, enforce that limit earlier)
    /// @dev This batches in size of 8 as per recommended by ERC721A creators
    /// @param to address to mint NFTs to
    /// @param quantity number of NFTs to mint
    function _mintNFTs(address to, uint256 quantity) internal {
        do {
            uint256 toMint = quantity > MAX_MINT_BATCH_SIZE
                ? MAX_MINT_BATCH_SIZE
                : quantity;
            _mint({to: to, quantity: toMint, _data: "", safe: false});
            quantity -= toMint;
        } while (quantity > 0);
    }

    /// @notice Merkle-tree based presale purchase function
    /// @param quantity quantity to purchase
    /// @param maxQuantity max quantity that can be purchased via merkle proof #
    /// @param pricePerToken price that each token is purchased at
    /// @param merkleProof proof for presale mint
    function purchasePresale(
        uint256 quantity,
        uint256 maxQuantity,
        uint256 pricePerToken,
        bytes32[] calldata merkleProof
    )
        external
        payable
        nonReentrant
        canMintTokens(quantity)
        onlyPresaleActive
        returns (uint256)
    {
        require(
            MerkleProofUpgradeable.verify(
                merkleProof,
                salesConfig.presaleMerkleRoot,
                keccak256(
                    // address, uint256, uint256
                    abi.encode(msg.sender, maxQuantity, pricePerToken)
                )
            ),
            "Needs to be approved"
        );
        require(msg.value == pricePerToken * quantity, "Wrong price");

        presaleMintsByAddress[_msgSender()] += quantity;
        require(presaleMintsByAddress[_msgSender()] <= maxQuantity, TOO_MANY);

        _mintNFTs(_msgSender(), quantity);
        uint256 firstMintedTokenId = _lastMintedTokenId() - quantity;

        emit IZoraDrop.Sale({
            to: _msgSender(),
            quantity: quantity,
            pricePerToken: pricePerToken,
            firstPurchasedTokenId: firstMintedTokenId
        });

        return firstMintedTokenId;
    }

    /**
     *** ---------------------------------- ***
     ***                                    ***
     ***     ADMIN MINTING FUNCTIONS        ***
     ***                                    ***
     *** ---------------------------------- ***
     ***
     ***/

    /// @notice Mint admin
    /// @param recipient recipient to mint to
    /// @param quantity quantity to mint
    function adminMint(address recipient, uint256 quantity)
        external
        onlyRoleOrAdmin(MINTER_ROLE)
        canMintTokens(quantity)
        returns (uint256)
    {
        _mintNFTs(recipient, quantity);

        return _lastMintedTokenId();
    }

    /// @dev This mints multiple editions to the given list of addresses.
    /// @param recipients list of addresses to send the newly minted editions to
    function adminMintAirdrop(address[] calldata recipients)
        external
        override
        onlyRoleOrAdmin(MINTER_ROLE)
        canMintTokens(recipients.length)
        returns (uint256)
    {
        uint256 atId = _currentIndex;
        uint256 startAt = atId;

        unchecked {
            for (
                uint256 endAt = atId + recipients.length;
                atId < endAt;
                atId++
            ) {
                _mintNFTs(recipients[atId - startAt], 1);
            }
        }
        return _lastMintedTokenId();
    }

    /**
     *** ---------------------------------- ***
     ***                                    ***
     ***  ADMIN CONFIGURATION FUNCTIONS     ***
     ***                                    ***
     *** ---------------------------------- ***
     ***
     ***/

    /// @dev Set new owner for royalties / opensea
    /// @param newOwner new owner to set
    function setOwner(address newOwner) public onlyAdmin {
        _setOwner(newOwner);
    }

    /// @dev This sets the sales configuration
    /// @param newConfig new configuration to set for sales information
    function setDropSaleConfiguration(SalesConfiguration memory newConfig)
        external
        onlyAdmin
    {
        salesConfig = newConfig;
        emit SalesConfigChanged(_msgSender(), salesConfig);
    }

    /// @dev Set a different funds recipient
    /// @param newRecipientAddress new funds recipient address
    function setFundsRecipient(address payable newRecipientAddress)
        external
        onlyRoleOrAdmin(SALES_MANAGER_ROLE)
    {
        config.fundsRecipient = newRecipientAddress;
        emit FundsRecipientChanged(newRecipientAddress, _msgSender());
    }

    /// @dev This withdraws ETH from the contract to the contract owner.
    function withdraw() external nonReentrant {
        address sender = _msgSender();

        uint256 funds = address(this).balance;
        (address payable feeRecipient, uint256 zoraFee) = zoraFeeForAmount(
            funds
        );

        require(
            hasRole(DEFAULT_ADMIN_ROLE, sender) ||
                hasRole(SALES_MANAGER_ROLE, sender) ||
                sender == feeRecipient ||
                sender == config.fundsRecipient,
            "Does not have proper role to withdraw"
        );

        // No need for gas limit to trusted address.
        if (zoraFee > 0) {
            feeRecipient.sendValue(zoraFee);
            funds -= zoraFee;
        }
        // No need for gas limit to trusted address.
        config.fundsRecipient.sendValue(funds);
    }

    /// @notice Admin function to finalize and open edition sale
    function finalizeOpenEdition()
        external
        onlyRoleOrAdmin(SALES_MANAGER_ROLE)
    {
        require(config.editionSize == type(uint64).max, "Not open edition");
        config.editionSize = uint64(_totalMinted());
        emit OpenMintFinalized(_msgSender(), config.editionSize);
    }

    /**
     *** ---------------------------------- ***
     ***                                    ***
     ***      GENERAL GETTER FUNCTIONS      ***
     ***                                    ***
     *** ---------------------------------- ***
     ***
     ***/

    /// @notice Simple override for owner interface.
    /// @return user owner address
    function owner()
        public
        view
        override(OwnableSkeleton, IZoraDrop)
        returns (address)
    {
        return super.owner();
    }

    /// @notice Contract URI Getter, proxies to metadataRenderer
    /// @return Contract URI
    function contractURI() external view returns (string memory) {
        return config.metadataRenderer.contractURI();
    }

    /// @notice Getter for metadataRenderer contract
    function metadataRenderer() external view returns (IMetadataRenderer) {
        return IMetadataRenderer(config.metadataRenderer);
    }

    /// @notice Token URI Getter, proxies to metadataRenderer
    /// @param tokenId id of token to get URI for
    /// @return Token URI
    function tokenURI(uint256 tokenId)
        public
        view
        override
        returns (string memory)
    {
        return config.metadataRenderer.tokenURI(tokenId);
    }

    /// @notice ERC165 supports interface
    /// @param interfaceId interface id to check if supported
    function supportsInterface(bytes4 interfaceId)
        public
        view
        override(
            IERC165Upgradeable,
            ERC721AUpgradeable,
            AccessControlUpgradeable
        )
        returns (bool)
    {
        return
            super.supportsInterface(interfaceId) ||
            type(IOwnable).interfaceId == interfaceId ||
            type(IERC2981Upgradeable).interfaceId == interfaceId ||
            type(IZoraDrop).interfaceId == interfaceId;
    }
}

// File: contracts/ZoraNFTDropDeployer.sol



// SPDX-License-Identifier: GPL-3.0
pragma solidity ^0.8.10;

import {ClonesUpgradeable} from "@openzeppelin/contracts-upgradeable/proxy/ClonesUpgradeable.sol";
import {ERC721Drop} from "./ERC721Drop.sol";
import {DropMetadataRenderer} from "./metadata/DropMetadataRenderer.sol";
import {IMetadataRenderer} from "./interfaces/IMetadataRenderer.sol";

contract ZoraNFTDropDeployer {
  event DeployedNewContract(address indexed from, address indexed newContract);
  address private immutable implementation;
  IMetadataRenderer private immutable metadataDropRendererAddress;
  constructor(address mediaContractBase, IMetadataRenderer _metadataDropRendererAddress) {
    implementation = mediaContractBase;
    metadataDropRendererAddress = _metadataDropRendererAddress;
  }

  function createDrop(
    address owner,
    string memory name,
    string memory symbol,
    address payable fundsRecipient,
    uint16 royaltyBPS,
    uint64 editionSize,
    string memory metadataURIBase,
    string memory metadataContractURI
  ) external returns (address) {
    bytes memory metadataInitializer = abi.encode(metadataURIBase, metadataContractURI);
    address newMediaContract = ClonesUpgradeable.clone(
        implementation
    );

    ERC721Drop(newMediaContract).initialize({
        _owner: owner,
        _name: name,
        _symbol: symbol,
        _fundsRecipient: fundsRecipient,
        _editionSize: editionSize,
        _royaltyBPS: royaltyBPS,
        _metadataRenderer: metadataDropRendererAddress,
        _metadataRendererInit: metadataInitializer
    });
    emit DeployedNewContract(msg.sender, newMediaContract);

    return newMediaContract;
  }
}

// File: contracts/interfaces/IMetadataRenderer.sol



// SPDX-License-Identifier: MIT

pragma solidity ^0.8.10;

interface IMetadataRenderer {
    function tokenURI(uint256) external view returns (string memory);
    function contractURI() external view returns (string memory);
    function initializeWithData(bytes memory initData) external;
}

// File: contracts/interfaces/IOwnable.sol



// SPDX-License-Identifier: MIT

pragma solidity ^0.8.10;

/**
 * @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.
 *
 * This ownership interface matches OZ's ownable interface.
 *
 */
interface IOwnable {
    event OwnershipTransferred(
        address indexed previousOwner,
        address indexed newOwner
    );

    /**
     * @dev Returns the address of the current owner.
     */
    function owner() external view returns (address);
}

// File: contracts/interfaces/IZoraDrop.sol



// SPDX-License-Identifier: GPL-3.0
pragma solidity ^0.8.10;

/**

 ________   _____   ____    ______      ____
/\_____  \ /\  __`\/\  _`\ /\  _  \    /\  _`\
\/____//'/'\ \ \/\ \ \ \L\ \ \ \L\ \   \ \ \/\ \  _ __   ___   _____     ____
     //'/'  \ \ \ \ \ \ ,  /\ \  __ \   \ \ \ \ \/\`'__\/ __`\/\ '__`\  /',__\
    //'/'___ \ \ \_\ \ \ \\ \\ \ \/\ \   \ \ \_\ \ \ \//\ \L\ \ \ \L\ \/\__, `\
    /\_______\\ \_____\ \_\ \_\ \_\ \_\   \ \____/\ \_\\ \____/\ \ ,__/\/\____/
    \/_______/ \/_____/\/_/\/ /\/_/\/_/    \/___/  \/_/ \/___/  \ \ \/  \/___/
                                                                 \ \_\
                                                                  \/_/

*/

/// @notice Interface for ZORA Drops contract
interface IZoraDrop {
    /// @notice Event emitted for each sale
    event Sale(
        address indexed to,
        uint256 indexed quantity,
        uint256 indexed pricePerToken,
        uint256 firstPurchasedTokenId
    );

    /// @notice Return value for sales details to use with front-ends
    struct SaleDetails {
        // Synthesized status variables for sale and presale
        bool presaleActive;
        bool publicSaleActive;

        // Timed sale actions for public sale
        uint64 publicSaleStart;
        uint64 publicSaleEnd;
        // Price for public sale
        uint256 publicSalePrice;
        // Timed sale actions for presale
        uint64 presaleStart;
        uint64 presaleEnd;
        // Merkle root (includes address, quantity, and price data for each entry)
        bytes32 presaleMerkleRoot;
        // Limit public sale to a specific number of mints per wallet
        uint256 maxSalePurchasePerAddress;
        // Information about the rest of the supply
        // Total that have been minted
        uint256 totalMinted;
        // The total supply available
        uint256 maxSupply;
    }

    /// @notice Return type of specific mint counts and details per address
    struct AddressMintDetails {
        /// Number of total mints from the given address
        uint256 totalMints;
        /// Number of presale mints from the given address
        uint256 presaleMints;
        /// Number of public mints from the given address
        uint256 publicMints;
    }

    /// @notice External purchase function (payable in eth)
    /// @param quantity to purchase
    /// @return first minted token ID
    function purchase(uint256 quantity) external payable returns (uint256);

    /// @notice External purchase presale function (takes a merkle proof and matches to root) (payable in eth)
    /// @param quantity to purchase
    /// @param maxQuantity can purchase (verified by merkle root)
    /// @param pricePerToken price per token allowed (verified by merkle root)
    /// @param merkleProof input for merkle proof leaf verified by merkle root
    /// @return first minted token ID
    function purchasePresale(
        uint256 quantity,
        uint256 maxQuantity,
        uint256 pricePerToken,
        bytes32[] memory merkleProof
    ) external payable returns (uint256);

    /// @notice Function to return the global sales details for the given drop
    function saleDetails() external view returns (SaleDetails memory);

    /// @notice Function to return the specific sales details for a given address
    /// @param minter address for minter to return mint information for
    function mintedPerAddress(address minter)
        external
        view
        returns (AddressMintDetails memory);

    /// @notice This is the opensea/public owner setting that can be set by the contract admin
    function owner() external view returns (address);

    /// @notice This is an admin mint function to mint a quantity to a specific address
    /// @param to address to mint to
    /// @param quantity quantity to mint
    /// @return the id of the first minted NFT
    function adminMint(address to, uint256 quantity) external returns (uint256);

    /// @notice This is an admin mint function to mint a single nft each to a list of addresses
    /// @param to list of addresses to mint an NFT each to
    /// @return the id of the first minted NFT
    function adminMintAirdrop(address[] memory to) external returns (uint256);

    /// @notice The version of the contract
    /// @return The version ID of this contract implementation
    function contractVersion() external pure returns (uint256);
}

// File: contracts/interfaces/IZoraFeeManager.sol



// SPDX-License-Identifier: GPL-3.0
pragma solidity ^0.8.10;

interface IZoraFeeManager {
    function getZORAWithdrawFeesBPS(address sender) external returns (address payable, uint256);
}

// File: contracts/metadata/DropMetadataRenderer.sol



// SPDX-License-Identifier: MIT

pragma solidity ^0.8.10;

import {StringsUpgradeable} from "@openzeppelin/contracts-upgradeable/utils/StringsUpgradeable.sol";
import {IMetadataRenderer} from "../interfaces/IMetadataRenderer.sol";
import {ERC721Drop} from "../ERC721Drop.sol";

/// @notice Drops metadata system
contract DropMetadataRenderer is IMetadataRenderer {
    event MetadataUpdated(
        address indexed target,
        string metadataBase,
        string metadataExtension,
        string contractURI,
        uint256 freezeAt
    );
    event ProvenanceHashUpdated(address indexed target, bytes32 provenanceHash);

    struct MetadataURIInfo {
        string base;
        string extension;
        string contractURI;
        uint256 freezeAt;
    }

    modifier requireSenderAdmin(address target) {
        require(
            target == msg.sender || ERC721Drop(target).isAdmin(msg.sender),
            "Only admin"
        );

        _;
    }

    mapping(address => MetadataURIInfo) public metadataBaseByContract;
    mapping(address => bytes32) public provenanceHashes;

    function initializeWithData(bytes memory data) external {
        // data format: string baseURI, string newContractURI
        (string memory initialBaseURI, string memory initialContractURI) = abi
            .decode(data, (string, string));
        _updateMetadataDetails(
            msg.sender,
            initialBaseURI,
            "",
            initialContractURI,
            0
        );
    }

    /// @notice Update the 
    function updateProvenanceHash(address target, bytes32 provenanceHash)
        external
        requireSenderAdmin(target)
    {
        provenanceHashes[target] = provenanceHash;
        emit ProvenanceHashUpdated(target, provenanceHash);
    }

    /// @notice Update metadata base URI and contract URI
    /// @param baseUri new base URI
    /// @param newContractUri new contract URI (can be an empty string)
    function updateMetadataBase(
        address target,
        string memory baseUri,
        string memory newContractUri
    ) external requireSenderAdmin(target) {
        _updateMetadataDetails(target, baseUri, "", newContractUri, 0);
    }

    /// @notice Update metadata base URI, extension, contract URI and freezing detailsUpdate metadata base URI, extension, contract URI and freezing detailsUpdate metadata base URI, extension, contract URI and freezing detailsUpdate metadata base URI, extension, contract URI and freezing detailsUpdate metadata base URI, extension, contract URI and freezing detailsUpdate metadata base URI, extension, contract URI and freezing detailsUpdate metadata base URI, extension, contract URI and freezing detailsUpdate metadata base URI, extension, contract URI and freezing details
    /// @param target target contract to update metadata for
    /// @param metadataBase new base URI to update metadata with
    /// @param metadataExtension new extension to append to base metadata URI
    /// @param freezeAt time to freeze the contract metadata at (set to 0 to disable)
    function updateMetadataBaseWithDetails(
        address target,
        string memory metadataBase,
        string memory metadataExtension,
        string memory newContractURI,
        uint256 freezeAt
    ) public requireSenderAdmin(target) {
        _updateMetadataDetails(
            target,
            metadataBase,
            metadataExtension,
            newContractURI,
            freezeAt
        );
    }

    /// @notice Internal metadata update function
    /// @param metadataBase Base URI to update metadata for
    /// @param metadataExtension Extension URI to update metadata for
    /// @param freezeAt timestamp to freeze metadata (set to 0 to disable freezing)
    function _updateMetadataDetails(
        address target,
        string memory metadataBase,
        string memory metadataExtension,
        string memory newContractURI,
        uint256 freezeAt
    ) internal {
        require(freezeAt == 0 || freezeAt < block.timestamp, "Metadata frozen");
        metadataBaseByContract[target] = MetadataURIInfo({
            base: metadataBase,
            extension: metadataExtension,
            contractURI: newContractURI,
            freezeAt: freezeAt
        });
        emit MetadataUpdated({
            target: target,
            metadataBase: metadataBase,
            metadataExtension: metadataExtension,
            contractURI: newContractURI,
            freezeAt: freezeAt
        });
    }

    /// @notice A contract URI for the given drop contract
    /// @dev reverts if a contract uri is not provided
    /// @return contract uri for the contract metadata
    function contractURI() external view override returns (string memory) {
        string memory uri = metadataBaseByContract[msg.sender].contractURI;
        if (bytes(uri).length == 0) revert();
        return uri;
    }

    /// @notice A token URI for the given drops contract
    /// @dev reverts if a contract uri is not set
    /// @return token URI for the given token ID and contract (set by msg.sender)
    function tokenURI(uint256 tokenId)
        external
        view
        override
        returns (string memory)
    {
        MetadataURIInfo memory info = metadataBaseByContract[msg.sender];

        if (bytes(info.base).length == 0) revert();

        return
            string(
                abi.encodePacked(
                    info.base,
                    StringsUpgradeable.toString(tokenId),
                    info.extension
                )
            );
    }
}

// File: contracts/utils/OwnableSkeleton.sol



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

import {IOwnable} from "../interfaces/IOwnable.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.
 *
 * This ownership interface matches OZ's ownable interface.
 */
contract OwnableSkeleton is IOwnable {
    address private _owner;

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

    function _setOwner(address newAddress) internal {
        emit OwnershipTransferred(_owner, newAddress);
        _owner = newAddress;
    }
}

// File: lib/ERC721A-Upgradeable/contracts/ERC721AUpgradeable.sol



// SPDX-License-Identifier: MIT
// Creator: Chiru Labs

pragma solidity ^0.8.4;

import "@openzeppelin/contracts-upgradeable/token/ERC721/IERC721Upgradeable.sol";
import "@openzeppelin/contracts-upgradeable/token/ERC721/IERC721ReceiverUpgradeable.sol";
import "@openzeppelin/contracts-upgradeable/token/ERC721/extensions/IERC721MetadataUpgradeable.sol";
import "@openzeppelin/contracts-upgradeable/utils/AddressUpgradeable.sol";
import "@openzeppelin/contracts-upgradeable/utils/ContextUpgradeable.sol";
import "@openzeppelin/contracts-upgradeable/utils/StringsUpgradeable.sol";
import "@openzeppelin/contracts-upgradeable/utils/introspection/ERC165Upgradeable.sol";
import "@openzeppelin/contracts-upgradeable/proxy/utils/Initializable.sol";

error ApprovalCallerNotOwnerNorApproved();
error ApprovalQueryForNonexistentToken();
error ApproveToCaller();
error ApprovalToCurrentOwner();
error BalanceQueryForZeroAddress();
error MintToZeroAddress();
error MintZeroQuantity();
error OwnerQueryForNonexistentToken();
error TransferCallerNotOwnerNorApproved();
error TransferFromIncorrectOwner();
error TransferToNonERC721ReceiverImplementer();
error TransferToZeroAddress();
error URIQueryForNonexistentToken();

/**
 * @dev Implementation of https://eips.ethereum.org/EIPS/eip-721[ERC721] Non-Fungible Token Standard, including
 * the Metadata extension. Built to optimize for lower gas during batch mints.
 *
 * Assumes serials are sequentially minted starting at _startTokenId() (defaults to 0, e.g. 0, 1, 2, 3..).
 *
 * Assumes that an owner cannot have more than 2**64 - 1 (max value of uint64) of supply.
 *
 * Assumes that the maximum token id cannot exceed 2**256 - 1 (max value of uint256).
 */
contract ERC721AUpgradeable is Initializable, ContextUpgradeable, ERC165Upgradeable, IERC721Upgradeable, IERC721MetadataUpgradeable {
    using AddressUpgradeable for address;
    using StringsUpgradeable for uint256;

    // Compiler will pack this into a single 256bit word.
    struct TokenOwnership {
        // The address of the owner.
        address addr;
        // Keeps track of the start time of ownership with minimal overhead for tokenomics.
        uint64 startTimestamp;
        // Whether the token has been burned.
        bool burned;
    }

    // Compiler will pack this into a single 256bit word.
    struct AddressData {
        // Realistically, 2**64-1 is more than enough.
        uint64 balance;
        // Keeps track of mint count with minimal overhead for tokenomics.
        uint64 numberMinted;
        // Keeps track of burn count with minimal overhead for tokenomics.
        uint64 numberBurned;
        // For miscellaneous variable(s) pertaining to the address
        // (e.g. number of whitelist mint slots used).
        // If there are multiple variables, please pack them into a uint64.
        uint64 aux;
    }

    // The tokenId of the next token to be minted.
    uint256 internal _currentIndex;

    // The number of tokens burned.
    uint256 internal _burnCounter;

    // Token name
    string private _name;

    // Token symbol
    string private _symbol;

    // Mapping from token ID to ownership details
    // An empty struct value does not necessarily mean the token is unowned. See _ownershipOf implementation for details.
    mapping(uint256 => TokenOwnership) internal _ownerships;

    // Mapping owner address to address data
    mapping(address => AddressData) private _addressData;

    // Mapping from token ID to approved address
    mapping(uint256 => address) private _tokenApprovals;

    // Mapping from owner to operator approvals
    mapping(address => mapping(address => bool)) private _operatorApprovals;

    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 {
        _name = name_;
        _symbol = symbol_;
        _currentIndex = _startTokenId();
    }

    /**
     * To change the starting tokenId, please override this function.
     */
    function _startTokenId() internal view virtual returns (uint256) {
        return 0;
    }

    /**
     * @dev Burned tokens are calculated here, use _totalMinted() if you want to count just minted tokens.
     */
    function totalSupply() public view returns (uint256) {
        // Counter underflow is impossible as _burnCounter cannot be incremented
        // more than _currentIndex - _startTokenId() times
        unchecked {
            return _currentIndex - _burnCounter - _startTokenId();
        }
    }

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

    /**
     * @dev See {IERC165-supportsInterface}.
     */
    function supportsInterface(bytes4 interfaceId) public view virtual override(ERC165Upgradeable, IERC165Upgradeable) returns (bool) {
        return
            interfaceId == type(IERC721Upgradeable).interfaceId ||
            interfaceId == type(IERC721MetadataUpgradeable).interfaceId ||
            super.supportsInterface(interfaceId);
    }

    /**
     * @dev See {IERC721-balanceOf}.
     */
    function balanceOf(address owner) public view override returns (uint256) {
        if (owner == address(0)) revert BalanceQueryForZeroAddress();
        return uint256(_addressData[owner].balance);
    }

    /**
     * Returns the number of tokens minted by `owner`.
     */
    function _numberMinted(address owner) internal view returns (uint256) {
        return uint256(_addressData[owner].numberMinted);
    }

    /**
     * Returns the number of tokens burned by or on behalf of `owner`.
     */
    function _numberBurned(address owner) internal view returns (uint256) {
        return uint256(_addressData[owner].numberBurned);
    }

    /**
     * Returns the auxillary data for `owner`. (e.g. number of whitelist mint slots used).
     */
    function _getAux(address owner) internal view returns (uint64) {
        return _addressData[owner].aux;
    }

    /**
     * Sets the auxillary 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 {
        _addressData[owner].aux = aux;
    }

    /**
     * Gas spent here starts off proportional to the maximum mint batch size.
     * It gradually moves to O(1) as tokens get transferred around in the collection over time.
     */
    function _ownershipOf(uint256 tokenId) internal view returns (TokenOwnership memory) {
        uint256 curr = tokenId;

        unchecked {
            if (_startTokenId() <= curr && curr < _currentIndex) {
                TokenOwnership memory ownership = _ownerships[curr];
                if (!ownership.burned) {
                    if (ownership.addr != address(0)) {
                        return ownership;
                    }
                    // Invariant:
                    // There will always be an ownership that has an address and is not burned
                    // before an ownership that does not have an address and is not burned.
                    // Hence, curr will not underflow.
                    while (true) {
                        curr--;
                        ownership = _ownerships[curr];
                        if (ownership.addr != address(0)) {
                            return ownership;
                        }
                    }
                }
            }
        }
        revert OwnerQueryForNonexistentToken();
    }

    /**
     * @dev See {IERC721-ownerOf}.
     */
    function ownerOf(uint256 tokenId) public view override returns (address) {
        return _ownershipOf(tokenId).addr;
    }

    /**
     * @dev See {IERC721Metadata-name}.
     */
    function name() public view virtual override returns (string memory) {
        return _name;
    }

    /**
     * @dev See {IERC721Metadata-symbol}.
     */
    function symbol() public view virtual override returns (string memory) {
        return _symbol;
    }

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

        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, can be overriden in child contracts.
     */
    function _baseURI() internal view virtual returns (string memory) {
        return '';
    }

    /**
     * @dev See {IERC721-approve}.
     */
    function approve(address to, uint256 tokenId) public override {
        address owner = ERC721AUpgradeable.ownerOf(tokenId);
        if (to == owner) revert ApprovalToCurrentOwner();

        if (_msgSender() != owner && !isApprovedForAll(owner, _msgSender())) {
            revert ApprovalCallerNotOwnerNorApproved();
        }

        _approve(to, tokenId, owner);
    }

    /**
     * @dev See {IERC721-getApproved}.
     */
    function getApproved(uint256 tokenId) public view override returns (address) {
        if (!_exists(tokenId)) revert ApprovalQueryForNonexistentToken();

        return _tokenApprovals[tokenId];
    }

    /**
     * @dev See {IERC721-setApprovalForAll}.
     */
    function setApprovalForAll(address operator, bool approved) public virtual override {
        if (operator == _msgSender()) revert ApproveToCaller();

        _operatorApprovals[_msgSender()][operator] = approved;
        emit ApprovalForAll(_msgSender(), operator, approved);
    }

    /**
     * @dev See {IERC721-isApprovedForAll}.
     */
    function isApprovedForAll(address owner, address operator) public view virtual override returns (bool) {
        return _operatorApprovals[owner][operator];
    }

    /**
     * @dev See {IERC721-transferFrom}.
     */
    function transferFrom(
        address from,
        address to,
        uint256 tokenId
    ) public virtual override {
        _transfer(from, to, tokenId);
    }

    /**
     * @dev See {IERC721-safeTransferFrom}.
     */
    function safeTransferFrom(
        address from,
        address to,
        uint256 tokenId
    ) public virtual override {
        safeTransferFrom(from, to, tokenId, '');
    }

    /**
     * @dev See {IERC721-safeTransferFrom}.
     */
    function safeTransferFrom(
        address from,
        address to,
        uint256 tokenId,
        bytes memory _data
    ) public virtual override {
        _transfer(from, to, tokenId);
        if (to.isContract() && !_checkContractOnERC721Received(from, to, tokenId, _data)) {
            revert TransferToNonERC721ReceiverImplementer();
        }
    }

    /**
     * @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 (`_mint`),
     */
    function _exists(uint256 tokenId) internal view returns (bool) {
        return _startTokenId() <= tokenId && tokenId < _currentIndex &&
            !_ownerships[tokenId].burned;
    }

    function _safeMint(address to, uint256 quantity) internal {
        _safeMint(to, quantity, '');
    }

    /**
     * @dev Safely mints `quantity` tokens and transfers them to `to`.
     *
     * Requirements:
     *
     * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called for each safe transfer.
     * - `quantity` must be greater than 0.
     *
     * Emits a {Transfer} event.
     */
    function _safeMint(
        address to,
        uint256 quantity,
        bytes memory _data
    ) internal {
        _mint(to, quantity, _data, true);
    }

    /**
     * @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.
     */
    function _mint(
        address to,
        uint256 quantity,
        bytes memory _data,
        bool safe
    ) internal {
        uint256 startTokenId = _currentIndex;
        if (to == address(0)) revert MintToZeroAddress();
        if (quantity == 0) revert MintZeroQuantity();

        _beforeTokenTransfers(address(0), to, startTokenId, quantity);

        // Overflows are incredibly unrealistic.
        // balance or numberMinted overflow if current value of either + quantity > 1.8e19 (2**64) - 1
        // updatedIndex overflows if _currentIndex + quantity > 1.2e77 (2**256) - 1
        unchecked {
            _addressData[to].balance += uint64(quantity);
            _addressData[to].numberMinted += uint64(quantity);

            _ownerships[startTokenId].addr = to;
            _ownerships[startTokenId].startTimestamp = uint64(block.timestamp);

            uint256 updatedIndex = startTokenId;
            uint256 end = updatedIndex + quantity;

            if (safe && to.isContract()) {
                do {
                    emit Transfer(address(0), to, updatedIndex);
                    if (!_checkContractOnERC721Received(address(0), to, updatedIndex++, _data)) {
                        revert TransferToNonERC721ReceiverImplementer();
                    }
                } while (updatedIndex != end);
                // Reentrancy protection
                if (_currentIndex != startTokenId) revert();
            } else {
                do {
                    emit Transfer(address(0), to, updatedIndex++);
                } while (updatedIndex != end);
            }
            _currentIndex = updatedIndex;
        }
        _afterTokenTransfers(address(0), to, startTokenId, quantity);
    }

    /**
     * @dev Transfers `tokenId` from `from` to `to`.
     *
     * Requirements:
     *
     * - `to` cannot be the zero address.
     * - `tokenId` token must be owned by `from`.
     *
     * Emits a {Transfer} event.
     */
    function _transfer(
        address from,
        address to,
        uint256 tokenId
    ) private {
        TokenOwnership memory prevOwnership = _ownershipOf(tokenId);

        if (prevOwnership.addr != from) revert TransferFromIncorrectOwner();

        bool isApprovedOrOwner = (_msgSender() == from ||
            isApprovedForAll(from, _msgSender()) ||
            getApproved(tokenId) == _msgSender());

        if (!isApprovedOrOwner) revert TransferCallerNotOwnerNorApproved();
        if (to == address(0)) revert TransferToZeroAddress();

        _beforeTokenTransfers(from, to, tokenId, 1);

        // Clear approvals from the previous owner
        _approve(address(0), tokenId, from);

        // 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 {
            _addressData[from].balance -= 1;
            _addressData[to].balance += 1;

            TokenOwnership storage currSlot = _ownerships[tokenId];
            currSlot.addr = to;
            currSlot.startTimestamp = uint64(block.timestamp);

            // If the ownership slot of tokenId+1 is not explicitly set, that means the transfer initiator owns it.
            // Set the slot of tokenId+1 explicitly in storage to maintain correctness for ownerOf(tokenId+1) calls.
            uint256 nextTokenId = tokenId + 1;
            TokenOwnership storage nextSlot = _ownerships[nextTokenId];
            if (nextSlot.addr == address(0)) {
                // This will suffice for checking _exists(nextTokenId),
                // as a burned slot cannot contain the zero address.
                if (nextTokenId != _currentIndex) {
                    nextSlot.addr = from;
                    nextSlot.startTimestamp = prevOwnership.startTimestamp;
                }
            }
        }

        emit Transfer(from, to, tokenId);
        _afterTokenTransfers(from, to, tokenId, 1);
    }

    /**
     * @dev This is 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 {
        TokenOwnership memory prevOwnership = _ownershipOf(tokenId);

        address from = prevOwnership.addr;

        if (approvalCheck) {
            bool isApprovedOrOwner = (_msgSender() == from ||
                isApprovedForAll(from, _msgSender()) ||
                getApproved(tokenId) == _msgSender());

            if (!isApprovedOrOwner) revert TransferCallerNotOwnerNorApproved();
        }

        _beforeTokenTransfers(from, address(0), tokenId, 1);

        // Clear approvals from the previous owner
        _approve(address(0), tokenId, from);

        // 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 {
            AddressData storage addressData = _addressData[from];
            addressData.balance -= 1;
            addressData.numberBurned += 1;

            // Keep track of who burned the token, and the timestamp of burning.
            TokenOwnership storage currSlot = _ownerships[tokenId];
            currSlot.addr = from;
            currSlot.startTimestamp = uint64(block.timestamp);
            currSlot.burned = true;

            // If the ownership slot of tokenId+1 is not explicitly set, that means the burn initiator owns it.
            // Set the slot of tokenId+1 explicitly in storage to maintain correctness for ownerOf(tokenId+1) calls.
            uint256 nextTokenId = tokenId + 1;
            TokenOwnership storage nextSlot = _ownerships[nextTokenId];
            if (nextSlot.addr == address(0)) {
                // This will suffice for checking _exists(nextTokenId),
                // as a burned slot cannot contain the zero address.
                if (nextTokenId != _currentIndex) {
                    nextSlot.addr = from;
                    nextSlot.startTimestamp = prevOwnership.startTimestamp;
                }
            }
        }

        emit Transfer(from, address(0), tokenId);
        _afterTokenTransfers(from, address(0), tokenId, 1);

        // Overflow not possible, as _burnCounter cannot be exceed _currentIndex times.
        unchecked {
            _burnCounter++;
        }
    }

    /**
     * @dev Approve `to` to operate on `tokenId`
     *
     * Emits a {Approval} event.
     */
    function _approve(
        address to,
        uint256 tokenId,
        address owner
    ) private {
        _tokenApprovals[tokenId] = to;
        emit Approval(owner, to, tokenId);
    }

    /**
     * @dev Internal function to invoke {IERC721Receiver-onERC721Received} on a target contract.
     *
     * @param from address representing the previous owner of the given token ID
     * @param to target address that will receive the tokens
     * @param tokenId uint256 ID of the token to be transferred
     * @param _data bytes optional data to send along with the call
     * @return bool whether the call correctly returned the expected magic value
     */
    function _checkContractOnERC721Received(
        address from,
        address to,
        uint256 tokenId,
        bytes memory _data
    ) private returns (bool) {
        try IERC721ReceiverUpgradeable(to).onERC721Received(_msgSender(), from, tokenId, _data) returns (bytes4 retval) {
            return retval == IERC721ReceiverUpgradeable(to).onERC721Received.selector;
        } catch (bytes memory reason) {
            if (reason.length == 0) {
                revert TransferToNonERC721ReceiverImplementer();
            } else {
                assembly {
                    revert(add(32, reason), mload(reason))
                }
            }
        }
    }

    /**
     * @dev Hook that is called before a set of serially-ordered token ids are about to be transferred. This includes minting.
     * And also called before burning one token.
     *
     * startTokenId - the first token id to be transferred
     * quantity - the amount to be transferred
     *
     * 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 _beforeTokenTransfers(
        address from,
        address to,
        uint256 startTokenId,
        uint256 quantity
    ) internal virtual {}

    /**
     * @dev Hook that is called after a set of serially-ordered token ids have been transferred. This includes
     * minting.
     * And also called after one token has been burned.
     *
     * startTokenId - the first token id to be transferred
     * quantity - the amount to be transferred
     *
     * Calling conditions:
     *
     * - When `from` and `to` are both non-zero, `from`'s `tokenId` has been
     * transferred to `to`.
     * - When `from` is zero, `tokenId` has been minted for `to`.
     * - When `to` is zero, `tokenId` has been burned by `from`.
     * - `from` and `to` are never both zero.
     */
    function _afterTokenTransfers(
        address from,
        address to,
        uint256 startTokenId,
        uint256 quantity
    ) internal virtual {}

    /**
     * @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[42] private __gap;
}

// File: lib/openzeppelin-contracts-upgradeable/contracts/access/AccessControlUpgradeable.sol



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

pragma solidity ^0.8.0;

import "./IAccessControlUpgradeable.sol";
import "../utils/ContextUpgradeable.sol";
import "../utils/StringsUpgradeable.sol";
import "../utils/introspection/ERC165Upgradeable.sol";
import "../proxy/utils/Initializable.sol";

/**
 * @dev Contract module that allows children to implement role-based access
 * control mechanisms. This is a lightweight version that doesn't allow enumerating role
 * members except through off-chain means by accessing the contract event logs. Some
 * applications may benefit from on-chain enumerability, for those cases see
 * {AccessControlEnumerable}.
 *
 * Roles are referred to by their `bytes32` identifier. These should be exposed
 * in the external API and be unique. The best way to achieve this is by
 * using `public constant` hash digests:
 *
 * ```
 * bytes32 public constant MY_ROLE = keccak256("MY_ROLE");
 * ```
 *
 * Roles can be used to represent a set of permissions. To restrict access to a
 * function call, use {hasRole}:
 *
 * ```
 * function foo() public {
 *     require(hasRole(MY_ROLE, msg.sender));
 *     ...
 * }
 * ```
 *
 * Roles can be granted and revoked dynamically via the {grantRole} and
 * {revokeRole} functions. Each role has an associated admin role, and only
 * accounts that have a role's admin role can call {grantRole} and {revokeRole}.
 *
 * By default, the admin role for all roles is `DEFAULT_ADMIN_ROLE`, which means
 * that only accounts with this role will be able to grant or revoke other
 * roles. More complex role relationships can be created by using
 * {_setRoleAdmin}.
 *
 * WARNING: The `DEFAULT_ADMIN_ROLE` is also its own admin: it has permission to
 * grant and revoke this role. Extra precautions should be taken to secure
 * accounts that have been granted it.
 */
abstract contract AccessControlUpgradeable is Initializable, ContextUpgradeable, IAccessControlUpgradeable, ERC165Upgradeable {
    function __AccessControl_init() internal onlyInitializing {
    }

    function __AccessControl_init_unchained() internal onlyInitializing {
    }
    struct RoleData {
        mapping(address => bool) members;
        bytes32 adminRole;
    }

    mapping(bytes32 => RoleData) private _roles;

    bytes32 public constant DEFAULT_ADMIN_ROLE = 0x00;

    /**
     * @dev Modifier that checks that an account has a specific role. Reverts
     * with a standardized message including the required role.
     *
     * The format of the revert reason is given by the following regular expression:
     *
     *  /^AccessControl: account (0x[0-9a-f]{40}) is missing role (0x[0-9a-f]{64})$/
     *
     * _Available since v4.1._
     */
    modifier onlyRole(bytes32 role) {
        _checkRole(role);
        _;
    }

    /**
     * @dev See {IERC165-supportsInterface}.
     */
    function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
        return interfaceId == type(IAccessControlUpgradeable).interfaceId || super.supportsInterface(interfaceId);
    }

    /**
     * @dev Returns `true` if `account` has been granted `role`.
     */
    function hasRole(bytes32 role, address account) public view virtual override returns (bool) {
        return _roles[role].members[account];
    }

    /**
     * @dev Revert with a standard message if `_msgSender()` is missing `role`.
     * Overriding this function changes the behavior of the {onlyRole} modifier.
     *
     * Format of the revert message is described in {_checkRole}.
     *
     * _Available since v4.6._
     */
    function _checkRole(bytes32 role) internal view virtual {
        _checkRole(role, _msgSender());
    }

    /**
     * @dev Revert with a standard message if `account` is missing `role`.
     *
     * The format of the revert reason is given by the following regular expression:
     *
     *  /^AccessControl: account (0x[0-9a-f]{40}) is missing role (0x[0-9a-f]{64})$/
     */
    function _checkRole(bytes32 role, address account) internal view virtual {
        if (!hasRole(role, account)) {
            revert(
                string(
                    abi.encodePacked(
                        "AccessControl: account ",
                        StringsUpgradeable.toHexString(uint160(account), 20),
                        " is missing role ",
                        StringsUpgradeable.toHexString(uint256(role), 32)
                    )
                )
            );
        }
    }

    /**
     * @dev Returns the admin role that controls `role`. See {grantRole} and
     * {revokeRole}.
     *
     * To change a role's admin, use {_setRoleAdmin}.
     */
    function getRoleAdmin(bytes32 role) public view virtual override returns (bytes32) {
        return _roles[role].adminRole;
    }

    /**
     * @dev Grants `role` to `account`.
     *
     * If `account` had not been already granted `role`, emits a {RoleGranted}
     * event.
     *
     * Requirements:
     *
     * - the caller must have ``role``'s admin role.
     */
    function grantRole(bytes32 role, address account) public virtual override onlyRole(getRoleAdmin(role)) {
        _grantRole(role, account);
    }

    /**
     * @dev Revokes `role` from `account`.
     *
     * If `account` had been granted `role`, emits a {RoleRevoked} event.
     *
     * Requirements:
     *
     * - the caller must have ``role``'s admin role.
     */
    function revokeRole(bytes32 role, address account) public virtual override onlyRole(getRoleAdmin(role)) {
        _revokeRole(role, account);
    }

    /**
     * @dev Revokes `role` from the calling account.
     *
     * Roles are often managed via {grantRole} and {revokeRole}: this function's
     * purpose is to provide a mechanism for accounts to lose their privileges
     * if they are compromised (such as when a trusted device is misplaced).
     *
     * If the calling account had been revoked `role`, emits a {RoleRevoked}
     * event.
     *
     * Requirements:
     *
     * - the caller must be `account`.
     */
    function renounceRole(bytes32 role, address account) public virtual override {
        require(account == _msgSender(), "AccessControl: can only renounce roles for self");

        _revokeRole(role, account);
    }

    /**
     * @dev Grants `role` to `account`.
     *
     * If `account` had not been already granted `role`, emits a {RoleGranted}
     * event. Note that unlike {grantRole}, this function doesn't perform any
     * checks on the calling account.
     *
     * [WARNING]
     * ====
     * This function should only be called from the constructor when setting
     * up the initial roles for the system.
     *
     * Using this function in any other way is effectively circumventing the admin
     * system imposed by {AccessControl}.
     * ====
     *
     * NOTE: This function is deprecated in favor of {_grantRole}.
     */
    function _setupRole(bytes32 role, address account) internal virtual {
        _grantRole(role, account);
    }

    /**
     * @dev Sets `adminRole` as ``role``'s admin role.
     *
     * Emits a {RoleAdminChanged} event.
     */
    function _setRoleAdmin(bytes32 role, bytes32 adminRole) internal virtual {
        bytes32 previousAdminRole = getRoleAdmin(role);
        _roles[role].adminRole = adminRole;
        emit RoleAdminChanged(role, previousAdminRole, adminRole);
    }

    /**
     * @dev Grants `role` to `account`.
     *
     * Internal function without access restriction.
     */
    function _grantRole(bytes32 role, address account) internal virtual {
        if (!hasRole(role, account)) {
            _roles[role].members[account] = true;
            emit RoleGranted(role, account, _msgSender());
        }
    }

    /**
     * @dev Revokes `role` from `account`.
     *
     * Internal function without access restriction.
     */
    function _revokeRole(bytes32 role, address account) internal virtual {
        if (hasRole(role, account)) {
            _roles[role].members[account] = false;
            emit RoleRevoked(role, account, _msgSender());
        }
    }

    /**
     * @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;
}

// File: lib/openzeppelin-contracts-upgradeable/contracts/access/IAccessControlUpgradeable.sol



// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (access/IAccessControl.sol)

pragma solidity ^0.8.0;

/**
 * @dev External interface of AccessControl declared to support ERC165 detection.
 */
interface IAccessControlUpgradeable {
    /**
     * @dev Emitted when `newAdminRole` is set as ``role``'s admin role, replacing `previousAdminRole`
     *
     * `DEFAULT_ADMIN_ROLE` is the starting admin for all roles, despite
     * {RoleAdminChanged} not being emitted signaling this.
     *
     * _Available since v3.1._
     */
    event RoleAdminChanged(bytes32 indexed role, bytes32 indexed previousAdminRole, bytes32 indexed newAdminRole);

    /**
     * @dev Emitted when `account` is granted `role`.
     *
     * `sender` is the account that originated the contract call, an admin role
     * bearer except when using {AccessControl-_setupRole}.
     */
    event RoleGranted(bytes32 indexed role, address indexed account, address indexed sender);

    /**
     * @dev Emitted when `account` is revoked `role`.
     *
     * `sender` is the account that originated the contract call:
     *   - if using `revokeRole`, it is the admin role bearer
     *   - if using `renounceRole`, it is the role bearer (i.e. `account`)
     */
    event RoleRevoked(bytes32 indexed role, address indexed account, address indexed sender);

    /**
     * @dev Returns `true` if `account` has been granted `role`.
     */
    function hasRole(bytes32 role, address account) external view returns (bool);

    /**
     * @dev Returns the admin role that controls `role`. See {grantRole} and
     * {revokeRole}.
     *
     * To change a role's admin, use {AccessControl-_setRoleAdmin}.
     */
    function getRoleAdmin(bytes32 role) external view returns (bytes32);

    /**
     * @dev Grants `role` to `account`.
     *
     * If `account` had not been already granted `role`, emits a {RoleGranted}
     * event.
     *
     * Requirements:
     *
     * - the caller must have ``role``'s admin role.
     */
    function grantRole(bytes32 role, address account) external;

    /**
     * @dev Revokes `role` from `account`.
     *
     * If `account` had been granted `role`, emits a {RoleRevoked} event.
     *
     * Requirements:
     *
     * - the caller must have ``role``'s admin role.
     */
    function revokeRole(bytes32 role, address account) external;

    /**
     * @dev Revokes `role` from the calling account.
     *
     * Roles are often managed via {grantRole} and {revokeRole}: this function's
     * purpose is to provide a mechanism for accounts to lose their privileges
     * if they are compromised (such as when a trusted device is misplaced).
     *
     * If the calling account had been granted `role`, emits a {RoleRevoked}
     * event.
     *
     * Requirements:
     *
     * - the caller must be `account`.
     */
    function renounceRole(bytes32 role, address account) external;
}

// File: lib/openzeppelin-contracts-upgradeable/contracts/interfaces/IERC2981Upgradeable.sol



// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.5.0) (interfaces/IERC2981.sol)

pragma solidity ^0.8.0;

import "../utils/introspection/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 payed in that same unit of exchange.
     */
    function royaltyInfo(uint256 tokenId, uint256 salePrice)
        external
        view
        returns (address receiver, uint256 royaltyAmount);
}

// File: lib/openzeppelin-contracts-upgradeable/contracts/proxy/ClonesUpgradeable.sol



// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (proxy/Clones.sol)

pragma solidity ^0.8.0;

/**
 * @dev https://eips.ethereum.org/EIPS/eip-1167[EIP 1167] is a standard for
 * deploying minimal proxy contracts, also known as "clones".
 *
 * > To simply and cheaply clone contract functionality in an immutable way, this standard specifies
 * > a minimal bytecode implementation that delegates all calls to a known, fixed address.
 *
 * The library includes functions to deploy a proxy using either `create` (traditional deployment) or `create2`
 * (salted deterministic deployment). It also includes functions to predict the addresses of clones deployed using the
 * deterministic method.
 *
 * _Available since v3.4._
 */
library ClonesUpgradeable {
    /**
     * @dev Deploys and returns the address of a clone that mimics the behaviour of `implementation`.
     *
     * This function uses the create opcode, which should never revert.
     */
    function clone(address implementation) internal returns (address instance) {
        assembly {
            let ptr := mload(0x40)
            mstore(ptr, 0x3d602d80600a3d3981f3363d3d373d3d3d363d73000000000000000000000000)
            mstore(add(ptr, 0x14), shl(0x60, implementation))
            mstore(add(ptr, 0x28), 0x5af43d82803e903d91602b57fd5bf30000000000000000000000000000000000)
            instance := create(0, ptr, 0x37)
        }
        require(instance != address(0), "ERC1167: create failed");
    }

    /**
     * @dev Deploys and returns the address of a clone that mimics the behaviour of `implementation`.
     *
     * This function uses the create2 opcode and a `salt` to deterministically deploy
     * the clone. Using the same `implementation` and `salt` multiple time will revert, since
     * the clones cannot be deployed twice at the same address.
     */
    function cloneDeterministic(address implementation, bytes32 salt) internal returns (address instance) {
        assembly {
            let ptr := mload(0x40)
            mstore(ptr, 0x3d602d80600a3d3981f3363d3d373d3d3d363d73000000000000000000000000)
            mstore(add(ptr, 0x14), shl(0x60, implementation))
            mstore(add(ptr, 0x28), 0x5af43d82803e903d91602b57fd5bf30000000000000000000000000000000000)
            instance := create2(0, ptr, 0x37, salt)
        }
        require(instance != address(0), "ERC1167: create2 failed");
    }

    /**
     * @dev Computes the address of a clone deployed using {Clones-cloneDeterministic}.
     */
    function predictDeterministicAddress(
        address implementation,
        bytes32 salt,
        address deployer
    ) internal pure returns (address predicted) {
        assembly {
            let ptr := mload(0x40)
            mstore(ptr, 0x3d602d80600a3d3981f3363d3d373d3d3d363d73000000000000000000000000)
            mstore(add(ptr, 0x14), shl(0x60, implementation))
            mstore(add(ptr, 0x28), 0x5af43d82803e903d91602b57fd5bf3ff00000000000000000000000000000000)
            mstore(add(ptr, 0x38), shl(0x60, deployer))
            mstore(add(ptr, 0x4c), salt)
            mstore(add(ptr, 0x6c), keccak256(ptr, 0x37))
            predicted := keccak256(add(ptr, 0x37), 0x55)
        }
    }

    /**
     * @dev Computes the address of a clone deployed using {Clones-cloneDeterministic}.
     */
    function predictDeterministicAddress(address implementation, bytes32 salt)
        internal
        view
        returns (address predicted)
    {
        return predictDeterministicAddress(implementation, salt, address(this));
    }
}

// File: lib/openzeppelin-contracts-upgradeable/contracts/proxy/utils/Initializable.sol



// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.5.0) (proxy/utils/Initializable.sol)

pragma solidity ^0.8.0;

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.
 *
 * 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 initialize the implementation contract, you can either invoke the
 * initializer manually, or you can include a constructor to automatically mark it as initialized when it is deployed:
 *
 * [.hljs-theme-light.nopadding]
 * ```
 * /// @custom:oz-upgrades-unsafe-allow constructor
 * constructor() initializer {}
 * ```
 * ====
 */
abstract contract Initializable {
    /**
     * @dev Indicates that the contract has been initialized.
     */
    bool private _initialized;

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

    /**
     * @dev Modifier to protect an initializer function from being invoked twice.
     */
    modifier initializer() {
        // If the contract is initializing we ignore whether _initialized is set in order to support multiple
        // inheritance patterns, but we only do this in the context of a constructor, because in other contexts the
        // contract may have been reentered.
        require(_initializing ? _isConstructor() : !_initialized, "Initializable: contract is already initialized");

        bool isTopLevelCall = !_initializing;
        if (isTopLevelCall) {
            _initializing = true;
            _initialized = true;
        }

        _;

        if (isTopLevelCall) {
            _initializing = false;
        }
    }

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

    function _isConstructor() private view returns (bool) {
        return !AddressUpgradeable.isContract(address(this));
    }
}

// File: lib/openzeppelin-contracts-upgradeable/contracts/security/ReentrancyGuardUpgradeable.sol



// 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;
}

// File: lib/openzeppelin-contracts-upgradeable/contracts/token/ERC721/IERC721ReceiverUpgradeable.sol



// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (token/ERC721/IERC721Receiver.sol)

pragma solidity ^0.8.0;

/**
 * @title ERC721 token receiver interface
 * @dev Interface for any contract that wants to support safeTransfers
 * from ERC721 asset contracts.
 */
interface IERC721ReceiverUpgradeable {
    /**
     * @dev Whenever an {IERC721} `tokenId` token is transferred to this contract via {IERC721-safeTransferFrom}
     * by `operator` from `from`, this function is called.
     *
     * It must return its Solidity selector to confirm the token transfer.
     * If any other value is returned or the interface is not implemented by the recipient, the transfer will be reverted.
     *
     * The selector can be obtained in Solidity with `IERC721Receiver.onERC721Received.selector`.
     */
    function onERC721Received(
        address operator,
        address from,
        uint256 tokenId,
        bytes calldata data
    ) external returns (bytes4);
}

// File: lib/openzeppelin-contracts-upgradeable/contracts/token/ERC721/IERC721Upgradeable.sol



// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (token/ERC721/IERC721.sol)

pragma solidity ^0.8.0;

import "../../utils/introspection/IERC165Upgradeable.sol";

/**
 * @dev Required interface of an ERC721 compliant contract.
 */
interface IERC721Upgradeable is IERC165Upgradeable {
    /**
     * @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
    ) external;

    /**
     * @dev Transfers `tokenId` token 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;

    /**
     * @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;

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

    /**
     * @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 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);

    /**
     * @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 calldata data
    ) external;
}

// File: lib/openzeppelin-contracts-upgradeable/contracts/token/ERC721/extensions/IERC721MetadataUpgradeable.sol



// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (token/ERC721/extensions/IERC721Metadata.sol)

pragma solidity ^0.8.0;

import "../IERC721Upgradeable.sol";

/**
 * @title ERC-721 Non-Fungible Token Standard, optional metadata extension
 * @dev See https://eips.ethereum.org/EIPS/eip-721
 */
interface IERC721MetadataUpgradeable is IERC721Upgradeable {
    /**
     * @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);
}

// File: lib/openzeppelin-contracts-upgradeable/contracts/utils/AddressUpgradeable.sol



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

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

// File: lib/openzeppelin-contracts-upgradeable/contracts/utils/ContextUpgradeable.sol



// 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;
}

// File: lib/openzeppelin-contracts-upgradeable/contracts/utils/StringsUpgradeable.sol



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

pragma solidity ^0.8.0;

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

    /**
     * @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);
    }
}

// File: lib/openzeppelin-contracts-upgradeable/contracts/utils/cryptography/MerkleProofUpgradeable.sol



// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.5.0) (utils/cryptography/MerkleProof.sol)

pragma solidity ^0.8.0;

/**
 * @dev These functions deal with verification of Merkle Trees proofs.
 *
 * The proofs can be generated using the JavaScript library
 * https://github.com/miguelmota/merkletreejs[merkletreejs].
 * Note: the hashing algorithm should be keccak256 and pair sorting should be enabled.
 *
 * See `test/utils/cryptography/MerkleProof.test.js` for some examples.
 *
 * WARNING: You should avoid using leaf values that are 64 bytes long prior to
 * hashing, or use a hash function other than keccak256 for hashing leaves.
 * This is because the concatenation of a sorted pair of internal nodes in
 * the merkle tree could be reinterpreted as a leaf value.
 */
library MerkleProofUpgradeable {
    /**
     * @dev Returns true if a `leaf` can be proved to be a part of a Merkle tree
     * defined by `root`. For this, a `proof` must be provided, containing
     * sibling hashes on the branch from the leaf to the root of the tree. Each
     * pair of leaves and each pair of pre-images are assumed to be sorted.
     */
    function verify(
        bytes32[] memory proof,
        bytes32 root,
        bytes32 leaf
    ) internal pure returns (bool) {
        return processProof(proof, leaf) == root;
    }

    /**
     * @dev Returns the rebuilt hash obtained by traversing a Merkle tree up
     * from `leaf` using `proof`. A `proof` is valid if and only if the rebuilt
     * hash matches the root of the tree. When processing the proof, the pairs
     * of leafs & pre-images are assumed to be sorted.
     *
     * _Available since v4.4._
     */
    function processProof(bytes32[] memory proof, bytes32 leaf) internal pure returns (bytes32) {
        bytes32 computedHash = leaf;
        for (uint256 i = 0; i < proof.length; i++) {
            bytes32 proofElement = proof[i];
            if (computedHash <= proofElement) {
                // Hash(current computed hash + current element of the proof)
                computedHash = _efficientHash(computedHash, proofElement);
            } else {
                // Hash(current element of the proof + current computed hash)
                computedHash = _efficientHash(proofElement, computedHash);
            }
        }
        return computedHash;
    }

    function _efficientHash(bytes32 a, bytes32 b) private pure returns (bytes32 value) {
        assembly {
            mstore(0x00, a)
            mstore(0x20, b)
            value := keccak256(0x00, 0x40)
        }
    }
}

// File: lib/openzeppelin-contracts-upgradeable/contracts/utils/introspection/ERC165Upgradeable.sol



// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/introspection/ERC165.sol)

pragma solidity ^0.8.0;

import "./IERC165Upgradeable.sol";
import "../../proxy/utils/Initializable.sol";

/**
 * @dev Implementation of the {IERC165} interface.
 *
 * Contracts that want to implement ERC165 should inherit from this contract and override {supportsInterface} to check
 * for the additional interface id that will be supported. For example:
 *
 * ```solidity
 * function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
 *     return interfaceId == type(MyInterface).interfaceId || super.supportsInterface(interfaceId);
 * }
 * ```
 *
 * Alternatively, {ERC165Storage} provides an easier to use but more expensive implementation.
 */
abstract contract ERC165Upgradeable is Initializable, IERC165Upgradeable {
    function __ERC165_init() internal onlyInitializing {
    }

    function __ERC165_init_unchained() internal onlyInitializing {
    }
    /**
     * @dev See {IERC165-supportsInterface}.
     */
    function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
        return interfaceId == type(IERC165Upgradeable).interfaceId;
    }

    /**
     * @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;
}

// File: lib/openzeppelin-contracts-upgradeable/contracts/utils/introspection/IERC165Upgradeable.sol



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

pragma solidity ^0.8.0;

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