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// SPDX-License-Identifier: MIT
pragma solidity ^0.8.19;

import {ERC721EnumerableUpgradeable} from "openzeppelin-upgradeable/token/ERC721/extensions/ERC721EnumerableUpgradeable.sol";
import {IERC721Upgradeable, ERC721Upgradeable} from "openzeppelin-upgradeable/token/ERC721/ERC721Upgradeable.sol";
import {IERC721ReceiverUpgradeable} from "openzeppelin-upgradeable/token/ERC721/IERC721ReceiverUpgradeable.sol";
import {ERC2981Upgradeable} from "openzeppelin-upgradeable/token/common/ERC2981Upgradeable.sol";
import {ReentrancyGuardUpgradeable} from "openzeppelin-upgradeable/security/ReentrancyGuardUpgradeable.sol";
import {OwnableUpgradeable} from "openzeppelin-upgradeable/access/OwnableUpgradeable.sol";
import {Initializable} from "openzeppelin-upgradeable/proxy/utils/Initializable.sol";
import {UUPSUpgradeable} from "openzeppelin-upgradeable/proxy/utils/UUPSUpgradeable.sol";
import {UpdatableOperatorFiltererUpgradeable} from "operator-filter-registry/src/upgradeable/UpdatableOperatorFiltererUpgradeable.sol";

import {IByteContract} from "bytes/interfaces/IByteContract.sol";

import {NTConfig, NTComponent} from "./NTConfig.sol";
import {CitizenPropertiesUpgradeable, CitizenData} from "./CitizenPropertiesUpgradeable.sol";
import {IMintContract} from "../interfaces/IMintContract.sol";
import {IComponent} from "../interfaces/IComponent.sol";

error Unauthorized(string reason);

contract NTS1Citizen is
    Initializable,
    UUPSUpgradeable,
    ERC2981Upgradeable,
    IERC721ReceiverUpgradeable,
    ERC721EnumerableUpgradeable,
    UpdatableOperatorFiltererUpgradeable,
    CitizenPropertiesUpgradeable,
    OwnableUpgradeable,
    ReentrancyGuardUpgradeable
{
    uint8 stateFlags;
    uint8 constant VAULT_REQUIRED_FLAG = 0x01;
    uint8 constant MINT_FLAG = 0x02;
    uint8 constant GENDER_CHANGE_FLAG = 0x08;
    uint8 constant RACE_OVERRIDE_FLAG = 0x10;

    uint16 currentId;
    // uint72 public mintedIdentityCost;
    uint72 public changeGenderCost;
    uint72 public changeSpecialMessageCost;
    uint72 public humanRaceOverrideCost;
    uint32 creationTime;

    function initialize(
        uint16 currentId_,
        address config_,
        address registry,
        address subscriptionOrRegistrantToCopy
    ) external initializer {
        __ERC721_init("Neo Tokyo Citizen V2", "NTCTZN");
        __ERC2981_init();
        __ReentrancyGuard_init();
        __UpdatableOperatorFiltererUpgradeable_init(
            registry,
            subscriptionOrRegistrantToCopy,
            true
        );
        __CitizenProperties_init(config_);
        __Ownable_init();

        _config = NTConfig(config_);
        currentId = currentId_;
        creationTime = uint32(block.timestamp);

        // mintedIdentityCost = 2000 ether;
        changeGenderCost = 25 ether;
        changeSpecialMessageCost = 10 ether;
        humanRaceOverrideCost = 10 ether;
    }

    function _authorizeUpgrade(address) internal override onlyOwner {}

    function supportsInterface(
        bytes4 interfaceId
    )
        public
        view
        virtual
        override(ERC2981Upgradeable, ERC721EnumerableUpgradeable)
        returns (bool)
    {
        return
            ERC721EnumerableUpgradeable.supportsInterface(interfaceId) ||
            ERC2981Upgradeable.supportsInterface(interfaceId) ||
            super.supportsInterface(interfaceId);
    }

    function onERC721Received(
        address operator,
        address from,
        uint256 tokenId,
        bytes calldata data
    ) public pure override returns (bytes4) {
        return IERC721ReceiverUpgradeable.onERC721Received.selector;
    }

    function tokenURI(
        uint256 tokenId
    ) public view override returns (string memory) {
        require(
            _exists(tokenId),
            "ERC721Metadata: URI query for nonexistent token"
        );

        return _config.generateURI(tokenId);
    }

    function getRewardRate(address _user) public view returns (uint256) {
        uint256 rewardRate;
        for (
            uint256 index = 0;
            index < ERC721Upgradeable.balanceOf(_user);
            ++index
        ) {
            rewardRate =
                rewardRate +
                _rewardRateByCitizenId[tokenOfOwnerByIndex(_user, index)];
        }
        return rewardRate;
    }

    // TODO: Check these
    //Obsolete due to rewards mapping implementation
    // function reduceRewards(uint256, address) public {}

    // TODO: Check these
    //Obsolete due to rewards mapping implementation
    // function increaseRewards(uint256, address) public {}


    function createCitizen(
        uint256 identityId,
        uint256 vaultId,
        uint256 itemCacheId,
        uint256 landDeedId,
        bool genderFemale,
        string calldata specialMessage
    ) public nonReentrant {
        if(!hasFlag(stateFlags, MINT_FLAG))
            revert Unauthorized("Mint not active");
        if(!identityValidated(identityId))
            revert Unauthorized("Not ID owner");
        if(!itemCacheValidated(itemCacheId))
            revert Unauthorized("Not item owner");
        if(!landDeedValidated(landDeedId))
            revert Unauthorized("Not land owner");

        if(hasFlag(stateFlags, VAULT_REQUIRED_FLAG) && vaultId == 0) {
            revert Unauthorized("Vault required");
        }

        if (genderFemale) {
            require(
                hasFlag(stateFlags, GENDER_CHANGE_FLAG),
                "Females cannot be uploaded yet"
            );
        }

        if (vaultId > 0 && !vaultValidated(vaultId)) {
            revert Unauthorized("Not vault owner");
        }

        _safeMint(_msgSender(), ++currentId);

        IERC721Upgradeable _identityContract = IERC721Upgradeable(
            _config.findComponent(NTComponent.S1_IDENTITY, true)
        );
        _identityContract.transferFrom(_msgSender(), address(this), identityId);

        if (vaultId > 0) {
            IERC721Upgradeable _vaultContract = IERC721Upgradeable(
                _config.findComponent(NTComponent.S1_VAULT, true)
            );
            _vaultContract.transferFrom(_msgSender(), address(this), vaultId);
        }

        IERC721Upgradeable _itemContract = IERC721Upgradeable(
            _config.findComponent(NTComponent.S1_ITEM, true)
        );
        _itemContract.transferFrom(_msgSender(), address(this), itemCacheId);

        IERC721Upgradeable _landContract = IERC721Upgradeable(
            _config.findComponent(NTComponent.S1_LAND, true)
        );
        _landContract.transferFrom(_msgSender(), address(this), landDeedId);

        uint8 flags = 0;

        if (genderFemale) {
            flags |= FEMALE_FLAG;
        }

        if (bytes(specialMessage).length > 0) {
            _specialMessageByCitizenId[currentId] = specialMessage;
        }
        _rewardRateByCitizenId[currentId] = calculateCitizenReward(
            identityId,
            vaultId
        );

        citizenData[currentId] = _packCitizenDataStruct(
            uint64(block.timestamp),
            uint32(identityId),
            uint32(itemCacheId),
            uint32(landDeedId),
            uint16(vaultId),
            0,
            flags
        );

        // TODO: needs looking into on BYTES 2.0 regarding what's needed
        // IByteContract byteToken = IByteContract(bytesContract);
        // byteToken.updateRewardOnMint(_msgSender(), newestCitizen);
    }

    /*
     * A function to migrate a citizen from the old contract to the new one
     * To save on user gas fees only the citizen will be minted
     * The components will only get minted if the citizen is disassembled after migration
     */
    function migrateAsset(
        address sender,
        uint256 citizenId
    ) public nonReentrant {
        require(
            _msgSender() == NTConfig(_config).migrator(),
            "msg.sender must be migrator"
        );

        NTS1Citizen oldContract = NTS1Citizen(
            _config.findComponent(NTComponent.S1_CITIZEN, false)
        );
        require(
            oldContract.ownerOf(citizenId) == sender,
            "You do not own that citizen"
        );

        //Only the citizen NFT is required to be transferred as it will be locked away in this contract forever
        //This guarantees the V1 components can never leave the old citizen contract and be used again
        oldContract.transferFrom(sender, address(this), citizenId);

        bool isFemale = oldContract.getGenderOfTokenId(citizenId);

        _safeMint(sender, citizenId);

        // mark the citizen ID as a migrated citizen
        citizenData[citizenId].flags = isFemale
            ? MIGRATED_FLAG | FEMALE_FLAG
            : MIGRATED_FLAG;
    }

    function disassembleCitizen(uint256 citizenId) public nonReentrant {
        require(_exists(citizenId), "Citizen does not exist");
        require(
            ownerOf(citizenId) == _msgSender(),
            "You do not own that citizen"
        );
        CitizenData storage citizen = citizenData[citizenId];

        if (hasFlag(citizen.flags, MIGRATED_FLAG)) {
            _unmintedDisassemble(citizenId);
        } else {
            _regularDisassemble(citizenId);
        }

        _burn(citizenId);

        delete _specialMessageByCitizenId[citizenId];
        delete _rewardRateByCitizenId[citizenId];
    }

    function _regularDisassemble(uint256 citizenId) private {
        CitizenData memory citizen = citizenData[citizenId];
        IERC721Upgradeable _identityContract = IERC721Upgradeable(
            _config.findComponent(NTComponent.S1_IDENTITY, true)
        );

        _identityContract.transferFrom(
            address(this),
            _msgSender(),
            citizen.identityId
        );

        if (citizen.vaultId > 0) {
            IERC721Upgradeable _vaultContract = IERC721Upgradeable(
                _config.findComponent(NTComponent.S1_VAULT, true)
            );
            _vaultContract.transferFrom(
                address(this),
                _msgSender(),
                citizen.vaultId
            );
        }

        IERC721Upgradeable _itemContract = IERC721Upgradeable(
            _config.findComponent(NTComponent.S1_ITEM, true)
        );
        _itemContract.transferFrom(
            address(this),
            _msgSender(),
            citizen.itemCacheId
        );

        IERC721Upgradeable _landContract = IERC721Upgradeable(
            _config.findComponent(NTComponent.S1_LAND, true)
        );
        _landContract.transferFrom(
            address(this),
            _msgSender(),
            citizen.landDeedId
        );
    }

    function _unmintedDisassemble(uint256 citizenId) private {
        NTS1Citizen v1Citizen = NTS1Citizen(
            _config.findComponent(NTComponent.S1_CITIZEN, false)
        );
        IComponent v2IdentityContract = IComponent(
            _config.findComponent(NTComponent.S1_IDENTITY, true)
        );

        v2IdentityContract.adminClaim(
            v1Citizen.getIdentityIdOfTokenId(citizenId),
            _msgSender()
        );

        uint256 v1VaultId = v1Citizen.getVaultIdOfTokenId(citizenId);
        if (v1VaultId > 0) {
            IComponent vaultContract = IComponent(
                _config.findComponent(NTComponent.S1_VAULT, true)
            );
            vaultContract.adminClaim(v1VaultId, _msgSender());
        }

        IComponent itemContract = IComponent(
            _config.findComponent(NTComponent.S1_ITEM, true)
        );
        itemContract.adminClaim(
            v1Citizen.getItemCacheIdOfTokenId(citizenId),
            _msgSender()
        );

        IComponent landContract = IComponent(
            _config.findComponent(NTComponent.S1_LAND, true)
        );
        landContract.adminClaim(
            v1Citizen.getLandDeedIdOfTokenId(citizenId),
            _msgSender()
        );
    }

    function changeGender(uint256 tokenId) public nonReentrant {
        require(
            hasFlag(stateFlags, GENDER_CHANGE_FLAG),
            "Females cannot be uploaded yet"
        );
        require(
            ownerOf(tokenId) == _msgSender(),
            "You do not own that citizen"
        );
        _chargeBytes(changeGenderCost);

        CitizenData storage citizen = citizenData[tokenId];
        citizen.flags ^= FEMALE_FLAG;
    }

    /// This function only works for citizens with the human race
    /// Set the `raceOverride` to `0` to reset to randomized human race.
    /// A `raceOverride` index will correspond to the races in the mint contract.
    /// Any `raceOverride` index larger than the last race index available will default to the last race index
    function changeHumanRace(
        uint256 tokenId,
        uint256 raceOverride
    ) public nonReentrant {
        require(
            hasFlag(stateFlags, RACE_OVERRIDE_FLAG),
            "Human race override is not active yet"
        );
        require(
            ownerOf(tokenId) == _msgSender(),
            "You do not own that citizen"
        );
        _chargeBytes(humanRaceOverrideCost);

        citizenData[tokenId].humanRace = uint8(raceOverride);
    }

    function _chargeBytes(uint256 price) private {
        IByteContract bytes_ = IByteContract(NTConfig(_config).bytesContract());
        bytes_.burn(_msgSender(), price);
    }

    function changeSpecialMessage(
        uint256 tokenId,
        string memory _message
    ) public nonReentrant {
        require(
            ownerOf(tokenId) == _msgSender(),
            "You do not own that citizen"
        );

        _chargeBytes(changeSpecialMessageCost);

        _specialMessageByCitizenId[tokenId] = _message;

        if (hasFlag(citizenData[tokenId].flags, MIGRATED_FLAG)) {
            citizenData[tokenId].flags |= SPECIAL_MESSAGE_UPDATED;
        }
    }

    function setChangeGenderCost(uint72 _cost) external onlyOwner {
        changeGenderCost = _cost;
    }

    function setHumanRaceOverrideCost(uint72 _cost) external onlyOwner {
        humanRaceOverrideCost = _cost;
    }

    function setChangeMessageCost(uint72 _cost) external onlyOwner {
        changeSpecialMessageCost = _cost;
    }

    function toggleVaultRequired() external onlyOwner {
        stateFlags ^= VAULT_REQUIRED_FLAG;
    }

    function setFemaleActive() public onlyOwner {
        stateFlags ^= GENDER_CHANGE_FLAG;
    }

    function setRaceOverrideActive() public onlyOwner {
        stateFlags ^= RACE_OVERRIDE_FLAG;
    }

    function setCitizenMintActive() public onlyOwner {
        stateFlags ^= MINT_FLAG;
    }

    //_newRoyalty is in basis points out of 10,000
    function adjustDefaultRoyalty(
        address _receiver,
        uint96 _newRoyalty
    ) public onlyOwner {
        _setDefaultRoyalty(_receiver, _newRoyalty);
    }

    //_newRoyalty is in basis points out of 10,000
    function adjustSingleTokenRoyalty(
        uint256 _tokenId,
        address _receiver,
        uint96 _newRoyalty
    ) public onlyOwner {
        _setTokenRoyalty(_tokenId, _receiver, _newRoyalty);
    }

    function setApprovalForAll(
        address operator,
        bool approved
    )
        public
        override(ERC721Upgradeable, IERC721Upgradeable)
        onlyAllowedOperatorApproval(operator)
    {
        super.setApprovalForAll(operator, approved);
    }

    function approve(
        address operator,
        uint256 tokenId
    )
        public
        override(ERC721Upgradeable, IERC721Upgradeable)
        onlyAllowedOperatorApproval(operator)
    {
        super.approve(operator, tokenId);
    }

    function transferFrom(
        address from,
        address to,
        uint256 tokenId
    )
        public
        override(ERC721Upgradeable, IERC721Upgradeable)
        onlyAllowedOperator(from)
    {
        super.transferFrom(from, to, tokenId);
    }

    function safeTransferFrom(
        address from,
        address to,
        uint256 tokenId
    )
        public
        override(ERC721Upgradeable, IERC721Upgradeable)
        onlyAllowedOperator(from)
    {
        super.safeTransferFrom(from, to, tokenId);
    }

    function safeTransferFrom(
        address from,
        address to,
        uint256 tokenId,
        bytes memory data
    )
        public
        override(ERC721Upgradeable, IERC721Upgradeable)
        onlyAllowedOperator(from)
    {
        super.safeTransferFrom(from, to, tokenId, data);
    }

    function setConfig(address config_) external onlyOwner {
        _config = NTConfig(config_);
    }

    function setCurrentId(uint16 currentId_) external onlyOwner {
        currentId = currentId_;
    }

    function owner()
        public
        view
        override(OwnableUpgradeable, UpdatableOperatorFiltererUpgradeable)
        returns (address)
    {
        return OwnableUpgradeable.owner();
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.8.0) (token/ERC721/extensions/ERC721Enumerable.sol)

pragma solidity ^0.8.0;

import "../ERC721Upgradeable.sol";
import "./IERC721EnumerableUpgradeable.sol";
import "../../../proxy/utils/Initializable.sol";

/**
 * @dev This implements an optional extension of {ERC721} defined in the EIP that adds
 * enumerability of all the token ids in the contract as well as all token ids owned by each
 * account.
 */
abstract contract ERC721EnumerableUpgradeable is Initializable, ERC721Upgradeable, IERC721EnumerableUpgradeable {
    function __ERC721Enumerable_init() internal onlyInitializing {
    }

    function __ERC721Enumerable_init_unchained() internal onlyInitializing {
    }
    // Mapping from owner to list of owned token IDs
    mapping(address => mapping(uint256 => uint256)) private _ownedTokens;

    // Mapping from token ID to index of the owner tokens list
    mapping(uint256 => uint256) private _ownedTokensIndex;

    // Array with all token ids, used for enumeration
    uint256[] private _allTokens;

    // Mapping from token id to position in the allTokens array
    mapping(uint256 => uint256) private _allTokensIndex;

    /**
     * @dev See {IERC165-supportsInterface}.
     */
    function supportsInterface(bytes4 interfaceId) public view virtual override(IERC165Upgradeable, ERC721Upgradeable) returns (bool) {
        return interfaceId == type(IERC721EnumerableUpgradeable).interfaceId || super.supportsInterface(interfaceId);
    }

    /**
     * @dev See {IERC721Enumerable-tokenOfOwnerByIndex}.
     */
    function tokenOfOwnerByIndex(address owner, uint256 index) public view virtual override returns (uint256) {
        require(index < ERC721Upgradeable.balanceOf(owner), "ERC721Enumerable: owner index out of bounds");
        return _ownedTokens[owner][index];
    }

    /**
     * @dev See {IERC721Enumerable-totalSupply}.
     */
    function totalSupply() public view virtual override returns (uint256) {
        return _allTokens.length;
    }

    /**
     * @dev See {IERC721Enumerable-tokenByIndex}.
     */
    function tokenByIndex(uint256 index) public view virtual override returns (uint256) {
        require(index < ERC721EnumerableUpgradeable.totalSupply(), "ERC721Enumerable: global index out of bounds");
        return _allTokens[index];
    }

    /**
     * @dev See {ERC721-_beforeTokenTransfer}.
     */
    function _beforeTokenTransfer(
        address from,
        address to,
        uint256 firstTokenId,
        uint256 batchSize
    ) internal virtual override {
        super._beforeTokenTransfer(from, to, firstTokenId, batchSize);

        if (batchSize > 1) {
            // Will only trigger during construction. Batch transferring (minting) is not available afterwards.
            revert("ERC721Enumerable: consecutive transfers not supported");
        }

        uint256 tokenId = firstTokenId;

        if (from == address(0)) {
            _addTokenToAllTokensEnumeration(tokenId);
        } else if (from != to) {
            _removeTokenFromOwnerEnumeration(from, tokenId);
        }
        if (to == address(0)) {
            _removeTokenFromAllTokensEnumeration(tokenId);
        } else if (to != from) {
            _addTokenToOwnerEnumeration(to, tokenId);
        }
    }

    /**
     * @dev Private function to add a token to this extension's ownership-tracking data structures.
     * @param to address representing the new owner of the given token ID
     * @param tokenId uint256 ID of the token to be added to the tokens list of the given address
     */
    function _addTokenToOwnerEnumeration(address to, uint256 tokenId) private {
        uint256 length = ERC721Upgradeable.balanceOf(to);
        _ownedTokens[to][length] = tokenId;
        _ownedTokensIndex[tokenId] = length;
    }

    /**
     * @dev Private function to add a token to this extension's token tracking data structures.
     * @param tokenId uint256 ID of the token to be added to the tokens list
     */
    function _addTokenToAllTokensEnumeration(uint256 tokenId) private {
        _allTokensIndex[tokenId] = _allTokens.length;
        _allTokens.push(tokenId);
    }

    /**
     * @dev Private function to remove a token from this extension's ownership-tracking data structures. Note that
     * while the token is not assigned a new owner, the `_ownedTokensIndex` mapping is _not_ updated: this allows for
     * gas optimizations e.g. when performing a transfer operation (avoiding double writes).
     * This has O(1) time complexity, but alters the order of the _ownedTokens array.
     * @param from address representing the previous owner of the given token ID
     * @param tokenId uint256 ID of the token to be removed from the tokens list of the given address
     */
    function _removeTokenFromOwnerEnumeration(address from, uint256 tokenId) private {
        // To prevent a gap in from's tokens array, we store the last token in the index of the token to delete, and
        // then delete the last slot (swap and pop).

        uint256 lastTokenIndex = ERC721Upgradeable.balanceOf(from) - 1;
        uint256 tokenIndex = _ownedTokensIndex[tokenId];

        // When the token to delete is the last token, the swap operation is unnecessary
        if (tokenIndex != lastTokenIndex) {
            uint256 lastTokenId = _ownedTokens[from][lastTokenIndex];

            _ownedTokens[from][tokenIndex] = lastTokenId; // Move the last token to the slot of the to-delete token
            _ownedTokensIndex[lastTokenId] = tokenIndex; // Update the moved token's index
        }

        // This also deletes the contents at the last position of the array
        delete _ownedTokensIndex[tokenId];
        delete _ownedTokens[from][lastTokenIndex];
    }

    /**
     * @dev Private function to remove a token from this extension's token tracking data structures.
     * This has O(1) time complexity, but alters the order of the _allTokens array.
     * @param tokenId uint256 ID of the token to be removed from the tokens list
     */
    function _removeTokenFromAllTokensEnumeration(uint256 tokenId) private {
        // To prevent a gap in the tokens array, we store the last token in the index of the token to delete, and
        // then delete the last slot (swap and pop).

        uint256 lastTokenIndex = _allTokens.length - 1;
        uint256 tokenIndex = _allTokensIndex[tokenId];

        // When the token to delete is the last token, the swap operation is unnecessary. However, since this occurs so
        // rarely (when the last minted token is burnt) that we still do the swap here to avoid the gas cost of adding
        // an 'if' statement (like in _removeTokenFromOwnerEnumeration)
        uint256 lastTokenId = _allTokens[lastTokenIndex];

        _allTokens[tokenIndex] = lastTokenId; // Move the last token to the slot of the to-delete token
        _allTokensIndex[lastTokenId] = tokenIndex; // Update the moved token's index

        // This also deletes the contents at the last position of the array
        delete _allTokensIndex[tokenId];
        _allTokens.pop();
    }

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

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (token/ERC721/ERC721.sol)

pragma solidity ^0.8.0;

import "./IERC721Upgradeable.sol";
import "./IERC721ReceiverUpgradeable.sol";
import "./extensions/IERC721MetadataUpgradeable.sol";
import "../../utils/AddressUpgradeable.sol";
import "../../utils/ContextUpgradeable.sol";
import "../../utils/StringsUpgradeable.sol";
import "../../utils/introspection/ERC165Upgradeable.sol";
import "../../proxy/utils/Initializable.sol";

/**
 * @dev Implementation of https://eips.ethereum.org/EIPS/eip-721[ERC721] Non-Fungible Token Standard, including
 * the Metadata extension, but not including the Enumerable extension, which is available separately as
 * {ERC721Enumerable}.
 */
contract ERC721Upgradeable is Initializable, ContextUpgradeable, ERC165Upgradeable, IERC721Upgradeable, IERC721MetadataUpgradeable {
    using AddressUpgradeable for address;
    using StringsUpgradeable for uint256;

    // Token name
    string private _name;

    // Token symbol
    string private _symbol;

    // Mapping from token ID to owner address
    mapping(uint256 => address) private _owners;

    // Mapping owner address to token count
    mapping(address => uint256) private _balances;

    // 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;

    /**
     * @dev Initializes the contract by setting a `name` and a `symbol` to the token collection.
     */
    function __ERC721_init(string memory name_, string memory symbol_) internal onlyInitializing {
        __ERC721_init_unchained(name_, symbol_);
    }

    function __ERC721_init_unchained(string memory name_, string memory symbol_) internal onlyInitializing {
        _name = name_;
        _symbol = symbol_;
    }

    /**
     * @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 virtual override returns (uint256) {
        require(owner != address(0), "ERC721: address zero is not a valid owner");
        return _balances[owner];
    }

    /**
     * @dev See {IERC721-ownerOf}.
     */
    function ownerOf(uint256 tokenId) public view virtual override returns (address) {
        address owner = _ownerOf(tokenId);
        require(owner != address(0), "ERC721: invalid token ID");
        return owner;
    }

    /**
     * @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) {
        _requireMinted(tokenId);

        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 overridden in child contracts.
     */
    function _baseURI() internal view virtual returns (string memory) {
        return "";
    }

    /**
     * @dev See {IERC721-approve}.
     */
    function approve(address to, uint256 tokenId) public virtual override {
        address owner = ERC721Upgradeable.ownerOf(tokenId);
        require(to != owner, "ERC721: approval to current owner");

        require(
            _msgSender() == owner || isApprovedForAll(owner, _msgSender()),
            "ERC721: approve caller is not token owner or approved for all"
        );

        _approve(to, tokenId);
    }

    /**
     * @dev See {IERC721-getApproved}.
     */
    function getApproved(uint256 tokenId) public view virtual override returns (address) {
        _requireMinted(tokenId);

        return _tokenApprovals[tokenId];
    }

    /**
     * @dev See {IERC721-setApprovalForAll}.
     */
    function setApprovalForAll(address operator, bool approved) public virtual override {
        _setApprovalForAll(_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 {
        //solhint-disable-next-line max-line-length
        require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721: caller is not token owner or approved");

        _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 {
        require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721: caller is not token owner or approved");
        _safeTransfer(from, to, tokenId, data);
    }

    /**
     * @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.
     *
     * `data` is additional data, it has no specified format and it is sent in call to `to`.
     *
     * This internal function is equivalent to {safeTransferFrom}, and can be used to e.g.
     * implement alternative mechanisms to perform token transfer, such as signature-based.
     *
     * Requirements:
     *
     * - `from` cannot be the zero address.
     * - `to` cannot be the zero address.
     * - `tokenId` token must exist and be owned by `from`.
     * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
     *
     * Emits a {Transfer} event.
     */
    function _safeTransfer(address from, address to, uint256 tokenId, bytes memory data) internal virtual {
        _transfer(from, to, tokenId);
        require(_checkOnERC721Received(from, to, tokenId, data), "ERC721: transfer to non ERC721Receiver implementer");
    }

    /**
     * @dev Returns the owner of the `tokenId`. Does NOT revert if token doesn't exist
     */
    function _ownerOf(uint256 tokenId) internal view virtual returns (address) {
        return _owners[tokenId];
    }

    /**
     * @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`),
     * and stop existing when they are burned (`_burn`).
     */
    function _exists(uint256 tokenId) internal view virtual returns (bool) {
        return _ownerOf(tokenId) != address(0);
    }

    /**
     * @dev Returns whether `spender` is allowed to manage `tokenId`.
     *
     * Requirements:
     *
     * - `tokenId` must exist.
     */
    function _isApprovedOrOwner(address spender, uint256 tokenId) internal view virtual returns (bool) {
        address owner = ERC721Upgradeable.ownerOf(tokenId);
        return (spender == owner || isApprovedForAll(owner, spender) || getApproved(tokenId) == spender);
    }

    /**
     * @dev Safely mints `tokenId` and transfers it to `to`.
     *
     * Requirements:
     *
     * - `tokenId` must not exist.
     * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
     *
     * Emits a {Transfer} event.
     */
    function _safeMint(address to, uint256 tokenId) internal virtual {
        _safeMint(to, tokenId, "");
    }

    /**
     * @dev Same as {xref-ERC721-_safeMint-address-uint256-}[`_safeMint`], with an additional `data` parameter which is
     * forwarded in {IERC721Receiver-onERC721Received} to contract recipients.
     */
    function _safeMint(address to, uint256 tokenId, bytes memory data) internal virtual {
        _mint(to, tokenId);
        require(
            _checkOnERC721Received(address(0), to, tokenId, data),
            "ERC721: transfer to non ERC721Receiver implementer"
        );
    }

    /**
     * @dev Mints `tokenId` and transfers it to `to`.
     *
     * WARNING: Usage of this method is discouraged, use {_safeMint} whenever possible
     *
     * Requirements:
     *
     * - `tokenId` must not exist.
     * - `to` cannot be the zero address.
     *
     * Emits a {Transfer} event.
     */
    function _mint(address to, uint256 tokenId) internal virtual {
        require(to != address(0), "ERC721: mint to the zero address");
        require(!_exists(tokenId), "ERC721: token already minted");

        _beforeTokenTransfer(address(0), to, tokenId, 1);

        // Check that tokenId was not minted by `_beforeTokenTransfer` hook
        require(!_exists(tokenId), "ERC721: token already minted");

        unchecked {
            // Will not overflow unless all 2**256 token ids are minted to the same owner.
            // Given that tokens are minted one by one, it is impossible in practice that
            // this ever happens. Might change if we allow batch minting.
            // The ERC fails to describe this case.
            _balances[to] += 1;
        }

        _owners[tokenId] = to;

        emit Transfer(address(0), to, tokenId);

        _afterTokenTransfer(address(0), to, tokenId, 1);
    }

    /**
     * @dev Destroys `tokenId`.
     * The approval is cleared when the token is burned.
     * This is an internal function that does not check if the sender is authorized to operate on the token.
     *
     * Requirements:
     *
     * - `tokenId` must exist.
     *
     * Emits a {Transfer} event.
     */
    function _burn(uint256 tokenId) internal virtual {
        address owner = ERC721Upgradeable.ownerOf(tokenId);

        _beforeTokenTransfer(owner, address(0), tokenId, 1);

        // Update ownership in case tokenId was transferred by `_beforeTokenTransfer` hook
        owner = ERC721Upgradeable.ownerOf(tokenId);

        // Clear approvals
        delete _tokenApprovals[tokenId];

        unchecked {
            // Cannot overflow, as that would require more tokens to be burned/transferred
            // out than the owner initially received through minting and transferring in.
            _balances[owner] -= 1;
        }
        delete _owners[tokenId];

        emit Transfer(owner, address(0), tokenId);

        _afterTokenTransfer(owner, address(0), tokenId, 1);
    }

    /**
     * @dev Transfers `tokenId` from `from` to `to`.
     *  As opposed to {transferFrom}, this imposes no restrictions on msg.sender.
     *
     * 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) internal virtual {
        require(ERC721Upgradeable.ownerOf(tokenId) == from, "ERC721: transfer from incorrect owner");
        require(to != address(0), "ERC721: transfer to the zero address");

        _beforeTokenTransfer(from, to, tokenId, 1);

        // Check that tokenId was not transferred by `_beforeTokenTransfer` hook
        require(ERC721Upgradeable.ownerOf(tokenId) == from, "ERC721: transfer from incorrect owner");

        // Clear approvals from the previous owner
        delete _tokenApprovals[tokenId];

        unchecked {
            // `_balances[from]` cannot overflow for the same reason as described in `_burn`:
            // `from`'s balance is the number of token held, which is at least one before the current
            // transfer.
            // `_balances[to]` could overflow in the conditions described in `_mint`. That would require
            // all 2**256 token ids to be minted, which in practice is impossible.
            _balances[from] -= 1;
            _balances[to] += 1;
        }
        _owners[tokenId] = to;

        emit Transfer(from, to, tokenId);

        _afterTokenTransfer(from, to, tokenId, 1);
    }

    /**
     * @dev Approve `to` to operate on `tokenId`
     *
     * Emits an {Approval} event.
     */
    function _approve(address to, uint256 tokenId) internal virtual {
        _tokenApprovals[tokenId] = to;
        emit Approval(ERC721Upgradeable.ownerOf(tokenId), to, tokenId);
    }

    /**
     * @dev Approve `operator` to operate on all of `owner` tokens
     *
     * Emits an {ApprovalForAll} event.
     */
    function _setApprovalForAll(address owner, address operator, bool approved) internal virtual {
        require(owner != operator, "ERC721: approve to caller");
        _operatorApprovals[owner][operator] = approved;
        emit ApprovalForAll(owner, operator, approved);
    }

    /**
     * @dev Reverts if the `tokenId` has not been minted yet.
     */
    function _requireMinted(uint256 tokenId) internal view virtual {
        require(_exists(tokenId), "ERC721: invalid token ID");
    }

    /**
     * @dev Internal function to invoke {IERC721Receiver-onERC721Received} on a target address.
     * The call is not executed if the target address is not a 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 _checkOnERC721Received(
        address from,
        address to,
        uint256 tokenId,
        bytes memory data
    ) private returns (bool) {
        if (to.isContract()) {
            try IERC721ReceiverUpgradeable(to).onERC721Received(_msgSender(), from, tokenId, data) returns (bytes4 retval) {
                return retval == IERC721ReceiverUpgradeable.onERC721Received.selector;
            } catch (bytes memory reason) {
                if (reason.length == 0) {
                    revert("ERC721: transfer to non ERC721Receiver implementer");
                } else {
                    /// @solidity memory-safe-assembly
                    assembly {
                        revert(add(32, reason), mload(reason))
                    }
                }
            }
        } else {
            return true;
        }
    }

    /**
     * @dev Hook that is called before any token transfer. This includes minting and burning. If {ERC721Consecutive} is
     * used, the hook may be called as part of a consecutive (batch) mint, as indicated by `batchSize` greater than 1.
     *
     * Calling conditions:
     *
     * - When `from` and `to` are both non-zero, ``from``'s tokens will be transferred to `to`.
     * - When `from` is zero, the tokens will be minted for `to`.
     * - When `to` is zero, ``from``'s tokens will be burned.
     * - `from` and `to` are never both zero.
     * - `batchSize` is non-zero.
     *
     * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
     */
    function _beforeTokenTransfer(address from, address to, uint256 firstTokenId, uint256 batchSize) internal virtual {}

    /**
     * @dev Hook that is called after any token transfer. This includes minting and burning. If {ERC721Consecutive} is
     * used, the hook may be called as part of a consecutive (batch) mint, as indicated by `batchSize` greater than 1.
     *
     * Calling conditions:
     *
     * - When `from` and `to` are both non-zero, ``from``'s tokens were transferred to `to`.
     * - When `from` is zero, the tokens were minted for `to`.
     * - When `to` is zero, ``from``'s tokens were burned.
     * - `from` and `to` are never both zero.
     * - `batchSize` is non-zero.
     *
     * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
     */
    function _afterTokenTransfer(address from, address to, uint256 firstTokenId, uint256 batchSize) internal virtual {}

    /**
     * @dev Unsafe write access to the balances, used by extensions that "mint" tokens using an {ownerOf} override.
     *
     * WARNING: Anyone calling this MUST ensure that the balances remain consistent with the ownership. The invariant
     * being that for any address `a` the value returned by `balanceOf(a)` must be equal to the number of tokens such
     * that `ownerOf(tokenId)` is `a`.
     */
    // solhint-disable-next-line func-name-mixedcase
    function __unsafe_increaseBalance(address account, uint256 amount) internal {
        _balances[account] += amount;
    }

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

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.6.0) (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);
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (token/common/ERC2981.sol)

pragma solidity ^0.8.0;

import "../../interfaces/IERC2981Upgradeable.sol";
import "../../utils/introspection/ERC165Upgradeable.sol";
import "../../proxy/utils/Initializable.sol";

/**
 * @dev Implementation of the NFT Royalty Standard, a standardized way to retrieve royalty payment information.
 *
 * Royalty information can be specified globally for all token ids via {_setDefaultRoyalty}, and/or individually for
 * specific token ids via {_setTokenRoyalty}. The latter takes precedence over the first.
 *
 * Royalty is specified as a fraction of sale price. {_feeDenominator} is overridable but defaults to 10000, meaning the
 * fee is specified in basis points by default.
 *
 * IMPORTANT: ERC-2981 only specifies a way to signal royalty information and does not enforce its payment. See
 * https://eips.ethereum.org/EIPS/eip-2981#optional-royalty-payments[Rationale] in the EIP. Marketplaces are expected to
 * voluntarily pay royalties together with sales, but note that this standard is not yet widely supported.
 *
 * _Available since v4.5._
 */
abstract contract ERC2981Upgradeable is Initializable, IERC2981Upgradeable, ERC165Upgradeable {
    function __ERC2981_init() internal onlyInitializing {
    }

    function __ERC2981_init_unchained() internal onlyInitializing {
    }
    struct RoyaltyInfo {
        address receiver;
        uint96 royaltyFraction;
    }

    RoyaltyInfo private _defaultRoyaltyInfo;
    mapping(uint256 => RoyaltyInfo) private _tokenRoyaltyInfo;

    /**
     * @dev See {IERC165-supportsInterface}.
     */
    function supportsInterface(bytes4 interfaceId) public view virtual override(IERC165Upgradeable, ERC165Upgradeable) returns (bool) {
        return interfaceId == type(IERC2981Upgradeable).interfaceId || super.supportsInterface(interfaceId);
    }

    /**
     * @inheritdoc IERC2981Upgradeable
     */
    function royaltyInfo(uint256 tokenId, uint256 salePrice) public view virtual override returns (address, uint256) {
        RoyaltyInfo memory royalty = _tokenRoyaltyInfo[tokenId];

        if (royalty.receiver == address(0)) {
            royalty = _defaultRoyaltyInfo;
        }

        uint256 royaltyAmount = (salePrice * royalty.royaltyFraction) / _feeDenominator();

        return (royalty.receiver, royaltyAmount);
    }

    /**
     * @dev The denominator with which to interpret the fee set in {_setTokenRoyalty} and {_setDefaultRoyalty} as a
     * fraction of the sale price. Defaults to 10000 so fees are expressed in basis points, but may be customized by an
     * override.
     */
    function _feeDenominator() internal pure virtual returns (uint96) {
        return 10000;
    }

    /**
     * @dev Sets the royalty information that all ids in this contract will default to.
     *
     * Requirements:
     *
     * - `receiver` cannot be the zero address.
     * - `feeNumerator` cannot be greater than the fee denominator.
     */
    function _setDefaultRoyalty(address receiver, uint96 feeNumerator) internal virtual {
        require(feeNumerator <= _feeDenominator(), "ERC2981: royalty fee will exceed salePrice");
        require(receiver != address(0), "ERC2981: invalid receiver");

        _defaultRoyaltyInfo = RoyaltyInfo(receiver, feeNumerator);
    }

    /**
     * @dev Removes default royalty information.
     */
    function _deleteDefaultRoyalty() internal virtual {
        delete _defaultRoyaltyInfo;
    }

    /**
     * @dev Sets the royalty information for a specific token id, overriding the global default.
     *
     * Requirements:
     *
     * - `receiver` cannot be the zero address.
     * - `feeNumerator` cannot be greater than the fee denominator.
     */
    function _setTokenRoyalty(uint256 tokenId, address receiver, uint96 feeNumerator) internal virtual {
        require(feeNumerator <= _feeDenominator(), "ERC2981: royalty fee will exceed salePrice");
        require(receiver != address(0), "ERC2981: Invalid parameters");

        _tokenRoyaltyInfo[tokenId] = RoyaltyInfo(receiver, feeNumerator);
    }

    /**
     * @dev Resets royalty information for the token id back to the global default.
     */
    function _resetTokenRoyalty(uint256 tokenId) internal virtual {
        delete _tokenRoyaltyInfo[tokenId];
    }

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

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (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() {
        _nonReentrantBefore();
        _;
        _nonReentrantAfter();
    }

    function _nonReentrantBefore() private {
        // On the first call to nonReentrant, _status will be _NOT_ENTERED
        require(_status != _ENTERED, "ReentrancyGuard: reentrant call");

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

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

    /**
     * @dev Returns true if the reentrancy guard is currently set to "entered", which indicates there is a
     * `nonReentrant` function in the call stack.
     */
    function _reentrancyGuardEntered() internal view returns (bool) {
        return _status == _ENTERED;
    }

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

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (access/Ownable.sol)

pragma solidity ^0.8.0;

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

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

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

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

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

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

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

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

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

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

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

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

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (proxy/utils/Initializable.sol)

pragma solidity ^0.8.2;

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

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

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

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

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

    /**
     * @dev A modifier that defines a protected reinitializer function that can be invoked at most once, and only if the
     * contract hasn't been initialized to a greater version before. In its scope, `onlyInitializing` functions can be
     * used to initialize parent contracts.
     *
     * A reinitializer may be used after the original initialization step. This is essential to configure modules that
     * are added through upgrades and that require initialization.
     *
     * When `version` is 1, this modifier is similar to `initializer`, except that functions marked with `reinitializer`
     * cannot be nested. If one is invoked in the context of another, execution will revert.
     *
     * Note that versions can jump in increments greater than 1; this implies that if multiple reinitializers coexist in
     * a contract, executing them in the right order is up to the developer or operator.
     *
     * WARNING: setting the version to 255 will prevent any future reinitialization.
     *
     * Emits an {Initialized} event.
     */
    modifier reinitializer(uint8 version) {
        require(!_initializing && _initialized < version, "Initializable: contract is already initialized");
        _initialized = version;
        _initializing = true;
        _;
        _initializing = false;
        emit Initialized(version);
    }

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

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

    /**
     * @dev Returns the highest version that has been initialized. See {reinitializer}.
     */
    function _getInitializedVersion() internal view returns (uint8) {
        return _initialized;
    }

    /**
     * @dev Returns `true` if the contract is currently initializing. See {onlyInitializing}.
     */
    function _isInitializing() internal view returns (bool) {
        return _initializing;
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (proxy/utils/UUPSUpgradeable.sol)

pragma solidity ^0.8.0;

import "../../interfaces/draft-IERC1822Upgradeable.sol";
import "../ERC1967/ERC1967UpgradeUpgradeable.sol";
import "./Initializable.sol";

/**
 * @dev An upgradeability mechanism designed for UUPS proxies. The functions included here can perform an upgrade of an
 * {ERC1967Proxy}, when this contract is set as the implementation behind such a proxy.
 *
 * A security mechanism ensures that an upgrade does not turn off upgradeability accidentally, although this risk is
 * reinstated if the upgrade retains upgradeability but removes the security mechanism, e.g. by replacing
 * `UUPSUpgradeable` with a custom implementation of upgrades.
 *
 * The {_authorizeUpgrade} function must be overridden to include access restriction to the upgrade mechanism.
 *
 * _Available since v4.1._
 */
abstract contract UUPSUpgradeable is Initializable, IERC1822ProxiableUpgradeable, ERC1967UpgradeUpgradeable {
    function __UUPSUpgradeable_init() internal onlyInitializing {
    }

    function __UUPSUpgradeable_init_unchained() internal onlyInitializing {
    }
    /// @custom:oz-upgrades-unsafe-allow state-variable-immutable state-variable-assignment
    address private immutable __self = address(this);

    /**
     * @dev Check that the execution is being performed through a delegatecall call and that the execution context is
     * a proxy contract with an implementation (as defined in ERC1967) pointing to self. This should only be the case
     * for UUPS and transparent proxies that are using the current contract as their implementation. Execution of a
     * function through ERC1167 minimal proxies (clones) would not normally pass this test, but is not guaranteed to
     * fail.
     */
    modifier onlyProxy() {
        require(address(this) != __self, "Function must be called through delegatecall");
        require(_getImplementation() == __self, "Function must be called through active proxy");
        _;
    }

    /**
     * @dev Check that the execution is not being performed through a delegate call. This allows a function to be
     * callable on the implementing contract but not through proxies.
     */
    modifier notDelegated() {
        require(address(this) == __self, "UUPSUpgradeable: must not be called through delegatecall");
        _;
    }

    /**
     * @dev Implementation of the ERC1822 {proxiableUUID} function. This returns the storage slot used by the
     * implementation. It is used to validate the implementation's compatibility when performing an upgrade.
     *
     * IMPORTANT: A proxy pointing at a proxiable contract should not be considered proxiable itself, because this risks
     * bricking a proxy that upgrades to it, by delegating to itself until out of gas. Thus it is critical that this
     * function revert if invoked through a proxy. This is guaranteed by the `notDelegated` modifier.
     */
    function proxiableUUID() external view virtual override notDelegated returns (bytes32) {
        return _IMPLEMENTATION_SLOT;
    }

    /**
     * @dev Upgrade the implementation of the proxy to `newImplementation`.
     *
     * Calls {_authorizeUpgrade}.
     *
     * Emits an {Upgraded} event.
     *
     * @custom:oz-upgrades-unsafe-allow-reachable delegatecall
     */
    function upgradeTo(address newImplementation) public virtual onlyProxy {
        _authorizeUpgrade(newImplementation);
        _upgradeToAndCallUUPS(newImplementation, new bytes(0), false);
    }

    /**
     * @dev Upgrade the implementation of the proxy to `newImplementation`, and subsequently execute the function call
     * encoded in `data`.
     *
     * Calls {_authorizeUpgrade}.
     *
     * Emits an {Upgraded} event.
     *
     * @custom:oz-upgrades-unsafe-allow-reachable delegatecall
     */
    function upgradeToAndCall(address newImplementation, bytes memory data) public payable virtual onlyProxy {
        _authorizeUpgrade(newImplementation);
        _upgradeToAndCallUUPS(newImplementation, data, true);
    }

    /**
     * @dev Function that should revert when `msg.sender` is not authorized to upgrade the contract. Called by
     * {upgradeTo} and {upgradeToAndCall}.
     *
     * Normally, this function will use an xref:access.adoc[access control] modifier such as {Ownable-onlyOwner}.
     *
     * ```solidity
     * function _authorizeUpgrade(address) internal override onlyOwner {}
     * ```
     */
    function _authorizeUpgrade(address newImplementation) 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[50] private __gap;
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.13;

import {OperatorFiltererUpgradeable} from "./OperatorFiltererUpgradeable.sol";
import {IOperatorFilterRegistry} from "../IOperatorFilterRegistry.sol";

/**
 * @title  Upgradeable storage layout for UpdatableOperatorFiltererUpgradeable.
 * @author qed.team, abarbatei, balajmarius
 * @notice Upgradeable contracts must use a storage layout that can be used across upgrades.
 *         Only append new variables to the end of the layout.
 */
library UpdatableOperatorFiltererUpgradeableStorage {
    struct Layout {
        /// @dev Address of the opensea filter register contract
        address _operatorFilterRegistry;
    }

    /// @dev The EIP-1967 specific storage slot for the layout
    bytes32 internal constant STORAGE_SLOT =
        bytes32(uint256(keccak256(bytes("UpdatableOperatorFiltererUpgradeable.contracts.storage"))) - 1);

    /// @dev The layout of the storage.
    function layout() internal pure returns (Layout storage l) {
        bytes32 slot = STORAGE_SLOT;
        assembly {
            l.slot := slot
        }
    }
}

/**
 * @title  UpdatableOperatorFiltererUpgradeable
 * @author qed.team, abarbatei, balajmarius
 * @notice Abstract contract whose init function automatically registers and optionally subscribes to or copies another
 *         registrant's entries in the OperatorFilterRegistry. This contract allows the Owner to update the
 *         OperatorFilterRegistry address via updateOperatorFilterRegistryAddress, including to the zero address,
 *         which will bypass registry checks.
 *         Note that OpenSea will still disable creator earnings enforcement if filtered operators begin fulfilling orders
 *         on-chain, eg, if the registry is revoked or bypassed.
 * @dev    This smart contract is meant to be inherited by token contracts so they can use the following:
 *         - `onlyAllowedOperator` modifier for `transferFrom` and `safeTransferFrom` methods.
 *         - `onlyAllowedOperatorApproval` modifier for `approve` and `setApprovalForAll` methods.
 *         Use updateOperatorFilterRegistryAddress function to change registry address if needed
 */
abstract contract UpdatableOperatorFiltererUpgradeable is OperatorFiltererUpgradeable {
    using UpdatableOperatorFiltererUpgradeableStorage for UpdatableOperatorFiltererUpgradeableStorage.Layout;

    /// @notice Emitted when someone other than the owner is trying to call an only owner function.
    error OnlyOwner();

    /// @notice Emitted when the operator filter registry address is changed by the owner of the contract
    event OperatorFilterRegistryAddressUpdated(address newRegistry);

    /**
     * @notice Initialization function in accordance with the upgradable pattern
     * @dev The upgradeable initialize function specific to proxied contracts
     * @param _registry Registry address to which to register to for blocking operators that do not respect royalties
     * @param subscriptionOrRegistrantToCopy Subscription address to use as a template for when
     *                                       imitating/copying blocked addresses and codehashes
     * @param subscribe If to subscribe to the subscriptionOrRegistrantToCopy address or just copy entries from it
     */
    function __UpdatableOperatorFiltererUpgradeable_init(
        address _registry,
        address subscriptionOrRegistrantToCopy,
        bool subscribe
    ) internal onlyInitializing {
        UpdatableOperatorFiltererUpgradeableStorage.layout()._operatorFilterRegistry = _registry;
        IOperatorFilterRegistry registry = IOperatorFilterRegistry(_registry);
        // If an inheriting token contract is deployed to a network without the registry deployed, the modifier
        // will not revert, but the contract will need to be registered with the registry once it is deployed in
        // order for the modifier to filter addresses.
        if (address(registry).code.length > 0) {
            if (subscribe) {
                registry.registerAndSubscribe(address(this), subscriptionOrRegistrantToCopy);
            } else {
                if (subscriptionOrRegistrantToCopy != address(0)) {
                    registry.registerAndCopyEntries(address(this), subscriptionOrRegistrantToCopy);
                } else {
                    registry.register(address(this));
                }
            }
        }
    }

    /**
     * @notice Update the address that the contract will make OperatorFilter checks against. When set to the zero
     *         address, checks will be bypassed. OnlyOwner.
     * @custom:event OperatorFilterRegistryAddressUpdated
     * @param newRegistry The address of the registry that will be used for this contract
     */
    function updateOperatorFilterRegistryAddress(address newRegistry) public virtual {
        if (msg.sender != owner()) {
            revert OnlyOwner();
        }
        UpdatableOperatorFiltererUpgradeableStorage.layout()._operatorFilterRegistry = newRegistry;
        emit OperatorFilterRegistryAddressUpdated(newRegistry);
    }

    /**
     * @dev Helper function to return the value of the currently used registry address
     */
    function operatorFilterRegistry() public view returns (address) {
        return address(UpdatableOperatorFiltererUpgradeableStorage.layout()._operatorFilterRegistry);
    }

    /**
     * @dev Assume the contract has an owner, but leave specific Ownable implementation up to inheriting contract
     */
    function owner() public view virtual returns (address);

    /**
     * @dev A helper function to check if the operator is allowed
     */
    function _checkFilterOperator(address operator) internal view virtual override {
        IOperatorFilterRegistry registry =
            IOperatorFilterRegistry(UpdatableOperatorFiltererUpgradeableStorage.layout()._operatorFilterRegistry);
        // Check registry code length to facilitate testing in environments without a deployed registry.
        if (address(registry) != address(0) && address(registry).code.length > 0) {
            // under normal circumstances, this function will revert rather than return false, but inheriting or
            // upgraded contracts may specify their own OperatorFilterRegistry implementations, which may behave
            // differently
            if (!registry.isOperatorAllowed(address(this), operator)) {
                revert OperatorNotAllowed(operator);
            }
        }
    }
}

// SPDX-License-Identifier: AGPL-3.0-only
pragma solidity ^0.8.19;

/**
	@custom:benediction DEVS BENEDICAT ET PROTEGAT CONTRACTVS MEAM
	@title A migrated ERC-20 BYTES token contract for the Neo Tokyo ecosystem.
	@author Tim Clancy <@_Enoch>

	This is the interface for the BYTES 2.0 contract.

	@custom:date February 14th, 2023.
*/
interface IByteContract {

	/**
		Permit authorized callers to burn BYTES from the `_from` address. When 
		BYTES are burnt, 2/3 of the BYTES are sent to the DAO treasury. This 
		operation is never expected to overflow given operational bounds on the 
		amount of BYTES tokens ever allowed to enter circulation.

		@param _from The address to burn tokens from.
		@param _amount The amount of tokens to burn.
	*/
	function burn (
		address _from,
		uint256 _amount
	) external;
	
	/**
		This function is called by the S1 Citizen contract to emit BYTES to callers 
		based on their state from the staker contract.

		@param _to The reward address to mint BYTES to.
	*/
	function getReward (
		address _to
	) external;
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.19;

import {OwnableUpgradeable} from "openzeppelin-upgradeable/access/OwnableUpgradeable.sol";
import {Initializable} from "openzeppelin-upgradeable/proxy/utils/Initializable.sol";
import {IERC721Metadata} from "openzeppelin/token/ERC721/extensions/IERC721Metadata.sol";
import {IERC721} from "openzeppelin/token/ERC721/IERC721.sol";

interface ICitizen {
    function getGenderOfTokenId(uint256 citizenId) external view returns (bool);
}

enum NTComponent {
    S1_IDENTITY,
    S1_BOUGHT_IDENTITY,
    S1_VAULT,
    S1_ITEM,
    S1_LAND,
    S1_CITIZEN,
    S2_IDENTITY,
    S2_ITEM,
    S2_LAND,
    S2_CITIZEN,
    CHAMPION_CHIP
}

enum NTSecondaryComponent {
    S1_IDENTITY_RARE_MINT,
    S1_IDENTITY_HAND_MINT,
    S1_CITIZEN_FEMALE,
    S2_CITIZEN_FEMALE
}

enum NTSeason {
    INVALID,
    NO_SEASON,
    SEASON_1,
    SEASON_2
}

struct NTComponents {
    address s1Identity;
    address s1BoughtIdentity;
    address s1Vault;
    address s1Item;
    address s1Land;
    address s1Citizen;
    address s2Identity;
    address s2Item;
    address s2Land;
    address s2Citizen;
    address championChips;
}

struct NTSecondaryComponents {
    address s1IdentityRareMint;
    address s1IdentityHandMint;
    address s1CitizenFemale;
    address s2CitizenFemale;
}

struct FallbackThresholds {
    uint16 s1Identity;
    uint16 s1BoughtIdentity;
    uint16 s1Vault;
    uint16 s1Item;
    uint16 s1Land;
    uint16 s1Citizen;
    uint16 s2Identity;
    uint16 s2Item;
    uint16 s2Land;
    uint16 s2Citizen;
    uint16 championChips;
}

error ComponentNotFound();
error AddressNotConfigured();
error TokenNotFound();

contract NTConfig is OwnableUpgradeable {
    bool constant V1 = false;
    bool constant V2 = true;

    address public migrator;
    address public bytesContract;

    FallbackThresholds fallbackThresholds;

    // maps `isV2` => `addresses`
    mapping(bool => NTComponents) _components;

    NTComponents _metadataContracts;
    NTSecondaryComponents _secondaryMetadataContracts;

    function initialize() external initializer {
        __Ownable_init();
    } 

    function findMigrator(
        NTComponent component
    ) external view returns (address) {
        return findComponent(component, true);
    }

    /**
     * @notice Finds the `component` in the version defined by `isV2`.
     *
     * @param component `NTComponent`encoding of the component
     * @param isV2 defines whether V1 or V2 addresses are to be overridden
     */
    function findComponent(
        NTComponent component,
        bool isV2
    ) public view returns (address) {
        NTComponents storage components = _components[isV2];
        if (component == NTComponent.S1_IDENTITY) {
            return components.s1Identity;
        } else if (component == NTComponent.S1_BOUGHT_IDENTITY) {
            return components.s1BoughtIdentity;
        } else if (component == NTComponent.S1_VAULT) {
            return components.s1Vault;
        } else if (component == NTComponent.S1_ITEM) {
            return components.s1Item;
        } else if (component == NTComponent.S1_LAND) {
            return components.s1Land;
        } else if (component == NTComponent.S1_CITIZEN) {
            return components.s1Citizen;
        } else if (component == NTComponent.S2_IDENTITY) {
            return components.s2Identity;
        } else if (component == NTComponent.S2_ITEM) {
            return components.s2Item;
        } else if (component == NTComponent.S2_LAND) {
            return components.s2Land;
        } else if (component == NTComponent.S2_CITIZEN) {
            return components.s2Citizen;
        } else if (component == NTComponent.CHAMPION_CHIP) {
            return components.championChips;
        }
        revert ComponentNotFound();
    }

    /**
     * @notice Decodes the `components` into a `NTComponents` struct and
     * overrides all the fields relating to the provided version defined by
     * `isV2`.
     *
     * @param components encoded struct of addresses to each NT component
     * @param isV2 defines whether V1 or V2 addresses are to be overridden
     */
    function enlist(bytes calldata components, bool isV2) public onlyOwner {
        NTComponents memory components_ = abi.decode(
            components,
            (NTComponents)
        );
        _components[isV2] = components_;
    }

    /**
     * @notice Sets the provided `component` to `addr`. `isV2` defines
     * which version is being overridden.
     *
     * @param component enum encoding from `NTComponent`
     * @param addr address to `component`
     * @param isV2 defines whether V1 or V2 addresses are to be overridden
     */
    function enlist(
        NTComponent component,
        address addr,
        bool isV2
    ) external onlyOwner {
        NTComponents storage components = _components[isV2];
        if (component == NTComponent.S1_IDENTITY) {
            components.s1Identity = addr;
        } else if (component == NTComponent.S1_BOUGHT_IDENTITY) {
            components.s1BoughtIdentity = addr;
        } else if (component == NTComponent.S1_VAULT) {
            components.s1Vault = addr;
        } else if (component == NTComponent.S1_ITEM) {
            components.s1Item = addr;
        } else if (component == NTComponent.S1_LAND) {
            components.s1Land = addr;
        } else if (component == NTComponent.S1_CITIZEN) {
            components.s1Citizen = addr;
        } else if (component == NTComponent.S2_IDENTITY) {
            components.s2Identity = addr;
        } else if (component == NTComponent.S2_ITEM) {
            components.s2Item = addr;
        } else if (component == NTComponent.S2_LAND) {
            components.s2Land = addr;
        } else if (component == NTComponent.S2_CITIZEN) {
            components.s2Citizen = addr;
        } else if (component == NTComponent.CHAMPION_CHIP) {
            components.championChips = addr;
        }
    }

    /**
     * @notice Decodes the `metadata` into a `NTComponents` struct
     *
     * @param metadata encoded struct of addresses to each NT metadata contract
     */
    function enlistMetadata(bytes calldata metadata) public onlyOwner {
        NTComponents memory metadataContracts = abi.decode(
            metadata,
            (NTComponents)
        );
        _metadataContracts = metadataContracts;
    }

    function enlistMetadata(
        NTComponent metadata,
        address addr
    ) external onlyOwner {
        if (metadata == NTComponent.S1_IDENTITY) {
            _metadataContracts.s1Identity = addr;
        } else if (metadata == NTComponent.S1_BOUGHT_IDENTITY) {
            _metadataContracts.s1BoughtIdentity = addr;
        } else if (metadata == NTComponent.S1_VAULT) {
            _metadataContracts.s1Vault = addr;
        } else if (metadata == NTComponent.S1_ITEM) {
            _metadataContracts.s1Item = addr;
        } else if (metadata == NTComponent.S1_LAND) {
            _metadataContracts.s1Land = addr;
        } else if (metadata == NTComponent.S1_CITIZEN) {
            _metadataContracts.s1Citizen = addr;
        } else if (metadata == NTComponent.S2_IDENTITY) {
            _metadataContracts.s2Identity = addr;
        } else if (metadata == NTComponent.S2_ITEM) {
            _metadataContracts.s2Item = addr;
        } else if (metadata == NTComponent.S2_LAND) {
            _metadataContracts.s2Land = addr;
        } else if (metadata == NTComponent.S2_CITIZEN) {
            _metadataContracts.s2Citizen = addr;
        } else if (metadata == NTComponent.CHAMPION_CHIP) {
            _metadataContracts.championChips = addr;
        }
    }

    /**
     * @notice Decodes the `metadata` into a `NTSecondaryMetadata` struct
     *
     * @param metadata encoded struct of addresses to each NT secondary metadata contract
     */
    function enlistSecondaryMetadata(bytes calldata metadata) public onlyOwner {
        NTSecondaryComponents memory metadataContracts = abi.decode(
            metadata,
            (NTSecondaryComponents)
        );
        _secondaryMetadataContracts = metadataContracts;
    }

    function enlistSecondaryMetadata(
        NTSecondaryComponent metadata,
        address addr
    ) external onlyOwner {
        if (metadata == NTSecondaryComponent.S1_IDENTITY_RARE_MINT) {
            _secondaryMetadataContracts.s1IdentityRareMint = addr;
        } else if (metadata == NTSecondaryComponent.S1_IDENTITY_HAND_MINT) {
            _secondaryMetadataContracts.s1IdentityHandMint = addr;
        } else if (metadata == NTSecondaryComponent.S1_CITIZEN_FEMALE) {
            _secondaryMetadataContracts.s1CitizenFemale = addr;
        } else if (metadata == NTSecondaryComponent.S2_CITIZEN_FEMALE) {
            _secondaryMetadataContracts.s2CitizenFemale = addr;
        }
    }

    function setBytesContract(address addr) external onlyOwner {
        bytesContract = addr;
    }

    function setFallbackThreshold(
        NTComponent component,
        uint16 threshold
    ) external onlyOwner {
        if (component == NTComponent.S1_IDENTITY) {
            fallbackThresholds.s1Identity = threshold;
        } else if (component == NTComponent.S1_BOUGHT_IDENTITY) {
            fallbackThresholds.s1BoughtIdentity = threshold;
        } else if (component == NTComponent.S1_VAULT) {
            fallbackThresholds.s1Vault = threshold;
        } else if (component == NTComponent.S1_ITEM) {
            fallbackThresholds.s1Item = threshold;
        } else if (component == NTComponent.S1_LAND) {
            fallbackThresholds.s1Land = threshold;
        } else if (component == NTComponent.S1_CITIZEN) {
            fallbackThresholds.s1Citizen = threshold;
        } else if (component == NTComponent.S2_IDENTITY) {
            fallbackThresholds.s2Identity = threshold;
        } else if (component == NTComponent.S2_ITEM) {
            fallbackThresholds.s2Item = threshold;
        } else if (component == NTComponent.S2_LAND) {
            fallbackThresholds.s2Land = threshold;
        } else if (component == NTComponent.S2_CITIZEN) {
            fallbackThresholds.s2Citizen = threshold;
        } else if (component == NTComponent.CHAMPION_CHIP) {
            fallbackThresholds.championChips = threshold;
        }
    }

    function setMigrator(address addr) external onlyOwner {
        migrator = addr;
    }

    function tokenExists(uint256 tokenId) external view returns (bool) {
        if (msg.sender == _metadataContracts.s1BoughtIdentity) {
            if (tokenId > fallbackThresholds.s1BoughtIdentity) {
                try
                    IERC721(_components[V2].s1Identity).ownerOf(tokenId)
                returns (address) {
                    return true;
                } catch {
                    return false;
                }
            } else if (
                IERC721(_components[V1].s1BoughtIdentity).ownerOf(tokenId) !=
                address(0)
            ) {
                return true;
            }
            return false;
        }
        revert TokenNotFound();
    }

    /**
     * @notice metadata contract will call parent to see who owns the token.
     * Based on metadata contract that's calling we will look at v1 and v2 a specific nft collection
     * if it exists in v2 we return v2 ownerOf else we return v1 ownerOf
     */
    function ownerOf(uint256 tokenId) external view returns (address) {
        if (msg.sender == _metadataContracts.s1Identity) {
            return
                IERC721(
                    _components[tokenId > fallbackThresholds.s1Identity]
                        .s1Identity
                ).ownerOf(tokenId);
        } else if (msg.sender == _metadataContracts.s1Item) {
            return
                IERC721(_components[tokenId > fallbackThresholds.s1Item].s1Item)
                    .ownerOf(tokenId);
        } else if (msg.sender == _metadataContracts.s1Land) {
            return
                IERC721(_components[tokenId > fallbackThresholds.s1Land].s1Land)
                    .ownerOf(tokenId);
        } else if (msg.sender == _metadataContracts.s2Identity) {
            return
                IERC721(
                    _components[tokenId > fallbackThresholds.s2Identity]
                        .s2Identity
                ).ownerOf(tokenId);
        } else if (msg.sender == _metadataContracts.s2Item) {
            return
                IERC721(_components[tokenId > fallbackThresholds.s2Item].s2Item)
                    .ownerOf(tokenId);
        } else if (msg.sender == _metadataContracts.s2Land) {
            return
                IERC721(_components[tokenId > fallbackThresholds.s2Land].s2Land)
                    .ownerOf(tokenId);
        }
        revert AddressNotConfigured();
    }

    function getAbility(uint256 tokenId) public view returns (string memory) {
        NTSeason season = _seasonChecker(msg.sender);
        if (season == NTSeason.SEASON_1) {
            return
                NTConfig(_findS1IdentityMetadataContract(tokenId)).getAbility(
                    tokenId
                );
        } else if (season == NTSeason.SEASON_2) {
            return NTConfig(_metadataContracts.s2Identity).getAbility(tokenId);
        }
        revert AddressNotConfigured();
    }

    function getAllocation(
        uint256 tokenId
    ) public view returns (string memory) {
        NTSeason season = _seasonChecker(msg.sender);
        if (season == NTSeason.SEASON_2) {
            return
                NTConfig(_metadataContracts.s2Identity).getAllocation(tokenId);
        }
        revert AddressNotConfigured();
    }

    function getApparel(uint256 tokenId) public view returns (string memory) {
        NTSeason season = _seasonChecker(msg.sender);
        if (season == NTSeason.SEASON_1) {
            return NTConfig(_metadataContracts.s1Item).getApparel(tokenId);
        } else if (season == NTSeason.SEASON_2) {
            return NTConfig(_metadataContracts.s2Item).getApparel(tokenId);
        } else {
            revert AddressNotConfigured();
        }
    }

    function getClass(uint256 tokenId) public view returns (string memory) {
        NTSeason season = _seasonChecker(msg.sender);
        if (season == NTSeason.SEASON_1) {
            return
                NTConfig(_findS1IdentityMetadataContract(tokenId)).getClass(
                    tokenId
                );
        } else if (season == NTSeason.SEASON_2) {
            return NTConfig(_metadataContracts.s2Identity).getClass(tokenId);
        }
        revert AddressNotConfigured();
    }

    function getExpression(
        uint256 tokenId
    ) public view returns (string memory) {
        NTSeason season = _seasonChecker(msg.sender);
        if (season == NTSeason.SEASON_2) {
            return
                NTConfig(_metadataContracts.s2Identity).getExpression(tokenId);
        }
        revert AddressNotConfigured();
    }

    function getEyes(uint256 tokenId) public view returns (string memory) {
        NTSeason season = _seasonChecker(msg.sender);
        if (season == NTSeason.SEASON_1) {
            return
                NTConfig(_findS1IdentityMetadataContract(tokenId)).getEyes(
                    tokenId
                );
        } else if (season == NTSeason.SEASON_2) {
            return NTConfig(_metadataContracts.s2Identity).getEyes(tokenId);
        }
        revert AddressNotConfigured();
    }

    function getGender(uint256 tokenId) public view returns (string memory) {
        NTSeason season = _seasonChecker(msg.sender);
        if (season == NTSeason.SEASON_1) {
            return
                NTConfig(_findS1IdentityMetadataContract(tokenId)).getGender(
                    tokenId
                );
        }
        revert AddressNotConfigured();
    }

    function getHair(uint256 tokenId) public view returns (string memory) {
        NTSeason season = _seasonChecker(msg.sender);
        if (season == NTSeason.SEASON_2) {
            return NTConfig(_metadataContracts.s2Identity).getHair(tokenId);
        }
        revert AddressNotConfigured();
    }

    function getHelm(uint256 tokenId) public view returns (string memory) {
        NTSeason season = _seasonChecker(msg.sender);
        if (season == NTSeason.SEASON_1) {
            return NTConfig(_metadataContracts.s1Item).getHelm(tokenId);
        } else if (season == NTSeason.SEASON_2) {
            return NTConfig(_metadataContracts.s2Item).getHelm(tokenId);
        }
        revert AddressNotConfigured();
    }

    function getLocation(uint256 tokenId) public view returns (string memory) {
        NTSeason season = _seasonChecker(msg.sender);
        if (season == NTSeason.SEASON_1) {
            return NTConfig(_metadataContracts.s1Land).getLocation(tokenId);
        } else if (season == NTSeason.SEASON_2) {
            return NTConfig(_metadataContracts.s2Land).getLocation(tokenId);
        }
        revert AddressNotConfigured();
    }

    function getNose(uint256 tokenId) public view returns (string memory) {
        NTSeason season = _seasonChecker(msg.sender);
        if (season == NTSeason.SEASON_2) {
            return NTConfig(_metadataContracts.s2Identity).getNose(tokenId);
        }
        revert AddressNotConfigured();
    }

    function getRace(uint256 tokenId) public view returns (string memory) {
        NTSeason season = _seasonChecker(msg.sender);
        if (season == NTSeason.SEASON_1) {
            return
                NTConfig(_findS1IdentityMetadataContract(tokenId)).getRace(
                    tokenId
                );
        } else if (season == NTSeason.SEASON_2) {
            return NTConfig(_metadataContracts.s2Identity).getRace(tokenId);
        }
        revert AddressNotConfigured();
    }

    function getVehicle(uint256 tokenId) public view returns (string memory) {
        NTSeason season = _seasonChecker(msg.sender);
        if (season == NTSeason.SEASON_1) {
            return NTConfig(_metadataContracts.s1Item).getVehicle(tokenId);
        } else if (season == NTSeason.SEASON_2) {
            return NTConfig(_metadataContracts.s2Item).getVehicle(tokenId);
        }
        revert AddressNotConfigured();
    }

    function getWeapon(uint256 tokenId) public view returns (string memory) {
        NTSeason season = _seasonChecker(msg.sender);
        if (season == NTSeason.SEASON_1) {
            return NTConfig(_metadataContracts.s1Item).getWeapon(tokenId);
        } else if (season == NTSeason.SEASON_2) {
            return NTConfig(_metadataContracts.s2Item).getWeapon(tokenId);
        }
        revert AddressNotConfigured();
    }

    function getAdditionalItem(
        uint256 tokenId
    ) public view returns (string memory) {
        NTSeason season = _seasonChecker(msg.sender);
        if (season == NTSeason.SEASON_1) {
            return
                NTConfig(_metadataContracts.s1Vault).getAdditionalItem(tokenId);
        }
        revert AddressNotConfigured();
    }

    function getAttractiveness(
        uint256 tokenId
    ) public view returns (string memory) {
        NTSeason season = _seasonChecker(msg.sender);
        if (season == NTSeason.SEASON_1) {
            return
                NTConfig(_findS1IdentityMetadataContract(tokenId))
                    .getAttractiveness(tokenId);
        } else if (season == NTSeason.SEASON_2) {
            return
                NTConfig(_metadataContracts.s2Identity).getAttractiveness(
                    tokenId
                );
        }
        revert AddressNotConfigured();
    }

    function getCool(uint256 tokenId) public view returns (string memory) {
        NTSeason season = _seasonChecker(msg.sender);
        if (season == NTSeason.SEASON_1) {
            return
                NTConfig(_findS1IdentityMetadataContract(tokenId)).getCool(
                    tokenId
                );
        } else if (season == NTSeason.SEASON_2) {
            return NTConfig(_metadataContracts.s2Identity).getCool(tokenId);
        }
        revert AddressNotConfigured();
    }

    function getIntelligence(
        uint256 tokenId
    ) public view returns (string memory) {
        NTSeason season = _seasonChecker(msg.sender);
        if (season == NTSeason.SEASON_1) {
            return
                NTConfig(_findS1IdentityMetadataContract(tokenId))
                    .getIntelligence(tokenId);
        }
        revert AddressNotConfigured();
    }

    function getStrength(uint256 tokenId) public view returns (string memory) {
        NTSeason season = _seasonChecker(msg.sender);
        if (season == NTSeason.SEASON_1) {
            return
                NTConfig(_findS1IdentityMetadataContract(tokenId)).getStrength(
                    tokenId
                );
        } else if (season == NTSeason.SEASON_2) {
            return NTConfig(_metadataContracts.s2Identity).getStrength(tokenId);
        }
        revert AddressNotConfigured();
    }

    function getTechSkill(uint256 tokenId) public view returns (string memory) {
        NTSeason season = _seasonChecker(msg.sender);
        if (season == NTSeason.SEASON_1) {
            return
                NTConfig(_findS1IdentityMetadataContract(tokenId)).getTechSkill(
                    tokenId
                );
        } else if (season == NTSeason.SEASON_2) {
            return
                NTConfig(_metadataContracts.s2Identity).getTechSkill(tokenId);
        }
        revert AddressNotConfigured();
    }

    function getCreditYield(
        uint256 tokenId
    ) public view returns (string memory) {
        NTSeason season = _seasonChecker(msg.sender);
        if (season == NTSeason.SEASON_1) {
            return
                NTConfig(_findS1IdentityMetadataContract(tokenId))
                    .getCreditYield(tokenId);
        }
        revert AddressNotConfigured();
    }

    function getCredits(uint256 tokenId) public view returns (string memory) {
        NTSeason season = _seasonChecker(msg.sender);
        if (season == NTSeason.SEASON_1) {
            return
                NTConfig(_findS1IdentityMetadataContract(tokenId)).getCredits(
                    tokenId
                );
        }
        revert AddressNotConfigured();
    }

    function getCreditProportionOfTotalSupply(
        uint256 tokenId
    ) public view returns (string memory) {
        NTSeason season = _seasonChecker(msg.sender);
        if (season == NTSeason.SEASON_1) {
            return
                NTConfig(_metadataContracts.s1Vault)
                    .getCreditProportionOfTotalSupply(tokenId);
        }
        revert AddressNotConfigured();
    }

    function getCreditMultiplier(
        uint256 tokenId
    ) public view returns (string memory) {
        NTSeason season = _seasonChecker(msg.sender);
        if (season == NTSeason.SEASON_1) {
            return
                NTConfig(_metadataContracts.s1Vault).getCreditMultiplier(
                    tokenId
                );
        }
        revert AddressNotConfigured();
    }

    function getIdentityIdOfTokenId(
        uint256 citizenId
    ) external view returns (uint256) {
        NTSeason season = _seasonChecker(msg.sender);
        if (season == NTSeason.SEASON_1) {
            if (citizenId > fallbackThresholds.s1Citizen) {
                return
                    NTConfig(_components[V2].s1Citizen).getIdentityIdOfTokenId(
                        citizenId
                    );
            } else {
                return
                    NTConfig(_components[V1].s1Citizen).getIdentityIdOfTokenId(
                        citizenId
                    );
            }
        } else if (season == NTSeason.SEASON_2) {
            if (citizenId > fallbackThresholds.s2Citizen) {
                return
                    NTConfig(_components[V2].s2Citizen).getIdentityIdOfTokenId(
                        citizenId
                    );
            } else {
                return
                    NTConfig(_components[V1].s2Citizen).getIdentityIdOfTokenId(
                        citizenId
                    );
            }
        }
        revert AddressNotConfigured();
    }

    function getVaultIdOfTokenId(
        uint256 citizenId
    ) external view returns (uint256) {
        NTSeason season = _seasonChecker(msg.sender);
        if (season == NTSeason.SEASON_1) {
            if (citizenId > fallbackThresholds.s1Citizen) {
                return
                    NTConfig(_components[V2].s1Citizen).getVaultIdOfTokenId(
                        citizenId
                    );
            } else {
                return
                    NTConfig(_components[V1].s1Citizen).getVaultIdOfTokenId(
                        citizenId
                    );
            }
        }
        revert AddressNotConfigured();
    }

    function getItemCacheIdOfTokenId(
        uint256 citizenId
    ) external view returns (uint256) {
        NTSeason season = _seasonChecker(msg.sender);
        if (season == NTSeason.SEASON_1) {
            if (citizenId > fallbackThresholds.s1Citizen) {
                return
                    NTConfig(_components[V2].s1Citizen).getItemCacheIdOfTokenId(
                        citizenId
                    );
            } else {
                return
                    NTConfig(_components[V1].s1Citizen).getItemCacheIdOfTokenId(
                        citizenId
                    );
            }
        } else if (season == NTSeason.SEASON_2) {
            if (citizenId > fallbackThresholds.s2Citizen) {
                return
                    NTConfig(_components[V2].s2Citizen).getItemCacheIdOfTokenId(
                        citizenId
                    );
            } else {
                return
                    NTConfig(_components[V1].s2Citizen).getItemCacheIdOfTokenId(
                        citizenId
                    );
            }
        }
        revert AddressNotConfigured();
    }

    function getLandDeedIdOfTokenId(
        uint256 citizenId
    ) external view returns (uint256) {
        NTSeason season = _seasonChecker(msg.sender);
        if (season == NTSeason.SEASON_1) {
            if (citizenId > fallbackThresholds.s1Citizen) {
                return
                    NTConfig(_components[V2].s1Citizen).getLandDeedIdOfTokenId(
                        citizenId
                    );
            } else {
                return
                    NTConfig(_components[V1].s1Citizen).getLandDeedIdOfTokenId(
                        citizenId
                    );
            }
        } else if (season == NTSeason.SEASON_2) {
            if (citizenId > fallbackThresholds.s2Citizen) {
                return
                    NTConfig(_components[V2].s2Citizen).getLandDeedIdOfTokenId(
                        citizenId
                    );
            } else {
                return
                    NTConfig(_components[V1].s2Citizen).getLandDeedIdOfTokenId(
                        citizenId
                    );
            }
        }
        revert AddressNotConfigured();
    }

    function getRewardRateOfTokenId(
        uint256 citizenId
    ) external view returns (uint256) {
        NTSeason season = _seasonChecker(msg.sender);
        if (season == NTSeason.SEASON_1) {
            if (citizenId > fallbackThresholds.s1Citizen) {
                return
                    NTConfig(_components[V2].s1Citizen).getRewardRateOfTokenId(
                        citizenId
                    );
            } else {
                return
                    NTConfig(_components[V1].s1Citizen).getRewardRateOfTokenId(
                        citizenId
                    );
            }
        }
        revert AddressNotConfigured();
    }

    function getSpecialMessageOfTokenId(
        uint256 citizenId
    ) external view returns (string memory) {
        NTSeason season = _seasonChecker(msg.sender);
        if (season == NTSeason.SEASON_1) {
            if (citizenId > fallbackThresholds.s1Citizen) {
                return
                    NTConfig(_components[V2].s1Citizen)
                        .getSpecialMessageOfTokenId(citizenId);
            } else {
                return
                    NTConfig(_components[V1].s1Citizen)
                        .getSpecialMessageOfTokenId(citizenId);
            }
        } else if (season == NTSeason.SEASON_2) {
            if (citizenId > fallbackThresholds.s2Citizen) {
                return
                    NTConfig(_components[V2].s2Citizen)
                        .getSpecialMessageOfTokenId(citizenId);
            } else {
                return
                    NTConfig(_components[V1].s2Citizen)
                        .getSpecialMessageOfTokenId(citizenId);
            }
        }
        revert AddressNotConfigured();
    }

    function calculateRewardRate(
        uint256 identityId,
        uint256 vaultId
    ) external returns (uint256) {
        return
            NTConfig(_metadataContracts.s1Citizen).calculateRewardRate(
                identityId,
                vaultId
            );
    }

    function checkSpecialItems(uint256 tokenId) external view returns (string memory) {
        return NTConfig(_components[V1].s1Item).checkSpecialItems(tokenId);
    }

    function generateURI(
        uint256 tokenId
    ) external view returns (string memory) {
        (bool isValid, , ) = _validateCaller(msg.sender);
        require(isValid, "generateURI: not configured address");
        NTConfig tokenContract = NTConfig(
            _selectTokenContract(msg.sender, tokenId)
        );
        return tokenContract.generateURI(tokenId);
    }

    function tokenURI(uint256 tokenId) external view returns (string memory) {
        (bool isValid, , ) = _validateCaller(msg.sender);
        require(isValid, "tokenURI: not configured address");
        NTConfig tokenContract = NTConfig(
            _selectTokenContract(msg.sender, tokenId)
        );
        if (
            msg.sender == _components[V1].s1Citizen ||
            msg.sender == _components[V2].s1Citizen ||
            msg.sender == _components[V1].s2Citizen ||
            msg.sender == _components[V2].s2Citizen
        ) {
            return tokenContract.generateURI(tokenId);
        }
        return tokenContract.tokenURI(tokenId);
    }

    function _findThreshold(
        NTComponent component
    ) internal view returns (uint256) {
        if (component == NTComponent.S1_IDENTITY) {
            return fallbackThresholds.s1Identity;
        } else if (component == NTComponent.S1_BOUGHT_IDENTITY) {
            return fallbackThresholds.s1BoughtIdentity;
        } else if (component == NTComponent.S1_VAULT) {
            return fallbackThresholds.s1Vault;
        } else if (component == NTComponent.S1_ITEM) {
            return fallbackThresholds.s1Item;
        } else if (component == NTComponent.S1_LAND) {
            return fallbackThresholds.s1Land;
        } else if (component == NTComponent.S1_CITIZEN) {
            return fallbackThresholds.s1Citizen;
        } else if (component == NTComponent.S2_IDENTITY) {
            return fallbackThresholds.s2Identity;
        } else if (component == NTComponent.S2_ITEM) {
            return fallbackThresholds.s2Item;
        } else if (component == NTComponent.S2_LAND) {
            return fallbackThresholds.s2Land;
        } else if (component == NTComponent.S2_CITIZEN) {
            return fallbackThresholds.s2Citizen;
        } else if (component == NTComponent.CHAMPION_CHIP) {
            return fallbackThresholds.championChips;
        }
        revert ComponentNotFound();
    }

    function _seasonChecker(address addr) internal view returns (NTSeason) {
        if (
            addr == _components[V1].s1Identity ||
            addr == _components[V2].s1Identity ||
            addr == _metadataContracts.s1Identity ||
            addr == _secondaryMetadataContracts.s1IdentityRareMint ||
            addr == _secondaryMetadataContracts.s1IdentityHandMint
        ) {
            return NTSeason.SEASON_1;
        } else if (
            addr == _components[V1].s1BoughtIdentity ||
            addr == _components[V2].s1BoughtIdentity ||
            addr == _metadataContracts.s1BoughtIdentity
        ) {
            return NTSeason.SEASON_1;
        } else if (
            addr == _components[V1].s1Vault ||
            addr == _components[V2].s1Vault ||
            addr == _metadataContracts.s1Vault
        ) {
            return NTSeason.SEASON_1;
        } else if (
            addr == _components[V1].s1Item ||
            addr == _components[V2].s1Item ||
            addr == _metadataContracts.s1Item
        ) {
            return NTSeason.SEASON_1;
        } else if (
            addr == _components[V1].s1Land ||
            addr == _components[V2].s1Land ||
            addr == _metadataContracts.s1Land
        ) {
            return NTSeason.SEASON_1;
        } else if (
            addr == _components[V1].s1Citizen ||
            addr == _components[V2].s1Citizen ||
            addr == _metadataContracts.s1Citizen ||
            addr == _secondaryMetadataContracts.s1CitizenFemale
        ) {
            return NTSeason.SEASON_1;
        } else if (
            addr == _components[V1].s2Identity ||
            addr == _components[V2].s2Identity ||
            addr == _metadataContracts.s2Identity
        ) {
            return NTSeason.SEASON_2;
        } else if (
            addr == _components[V1].s2Item ||
            addr == _components[V2].s2Item ||
            addr == _metadataContracts.s2Item
        ) {
            return NTSeason.SEASON_2;
        } else if (
            addr == _components[V1].s2Land ||
            addr == _components[V2].s2Land ||
            addr == _metadataContracts.s2Land
        ) {
            return NTSeason.SEASON_2;
        } else if (
            addr == _components[V1].s2Citizen ||
            addr == _components[V2].s2Citizen ||
            addr == _metadataContracts.s2Citizen ||
            addr == _secondaryMetadataContracts.s2CitizenFemale
        ) {
            return NTSeason.SEASON_2;
        } else if (
            addr == _components[V1].championChips ||
            addr == _components[V2].championChips ||
            addr == _metadataContracts.championChips
        ) {
            return NTSeason.NO_SEASON;
        } else {
            return NTSeason.INVALID;
        }
    }

    function _findS1IdentityMetadataContract(
        uint256 tokenId
    ) internal view returns (address) {
        if (tokenId < 2251) {
            return _metadataContracts.s1Identity;
        } else if (tokenId < 2281) {
            return _secondaryMetadataContracts.s1IdentityRareMint;
        } else if (tokenId < 2288) {
            return _secondaryMetadataContracts.s1IdentityHandMint;
        } else {
            return _metadataContracts.s1BoughtIdentity;
        }
    }

    function _validateAddress(
        address addr,
        bool isV2
    ) internal view returns (bool) {
        NTComponents storage components = _components[isV2];
        if (addr == components.s1Identity) {
            return true;
        } else if (addr == components.s1BoughtIdentity) {
            return true;
        } else if (addr == components.s1Vault) {
            return true;
        } else if (addr == components.s1Vault) {
            return true;
        } else if (addr == components.s1Item) {
            return true;
        } else if (addr == components.s1Land) {
            return true;
        } else if (addr == components.s1Citizen) {
            return true;
        } else if (addr == components.s2Identity) {
            return true;
        } else if (addr == components.s2Item) {
            return true;
        } else if (addr == components.s2Land) {
            return true;
        } else if (addr == components.s2Citizen) {
            return true;
        } else if (addr == components.championChips) {
            return true;
        }
        revert ComponentNotFound();
    }

    /**
     * @notice Validates the `caller` address under the assumption
     * of it being from the `V2` set of addresses. If no address is found,
     * it gracefully returns a `false` success-state and all following tuple
     * arguments are invalid.
     *
     * @param caller the address of the caller (usually `msg.sender`)
     */
    function _validateCaller(
        address caller
    ) internal view returns (bool, address, NTComponent) {
        NTComponents storage v1Components = _components[V1];
        NTComponents storage v2Components = _components[V2];
        address fallbackAddr;
        NTComponent callingComponent;

        if (caller == v2Components.s1Identity || caller == v1Components.s1Identity) {
            fallbackAddr = v1Components.s1Identity;
            callingComponent = NTComponent.S1_IDENTITY;
        } else if (caller == v1Components.s1BoughtIdentity) {
            fallbackAddr = v1Components.s1BoughtIdentity;
            callingComponent = NTComponent.S1_BOUGHT_IDENTITY;
        } else if (caller == v2Components.s1Vault || caller == v1Components.s1Vault) {
            fallbackAddr = v1Components.s1Vault;
            callingComponent = NTComponent.S1_VAULT;
        } else if (caller == v2Components.s1Item || caller == v1Components.s1Item) {
            fallbackAddr = v1Components.s1Item;
            callingComponent = NTComponent.S1_ITEM;
        } else if (caller == v2Components.s1Land || caller == v1Components.s1Land) {
            fallbackAddr = v1Components.s1Land;
            callingComponent = NTComponent.S1_LAND;
        } else if (caller == v2Components.s1Citizen || caller == v1Components.s1Citizen) {
            fallbackAddr = v1Components.s1Citizen;
            callingComponent = NTComponent.S1_CITIZEN;
        } else if (caller == v2Components.s2Identity || caller == v1Components.s2Identity) {
            fallbackAddr = v1Components.s2Identity;
            callingComponent = NTComponent.S2_IDENTITY;
        } else if (caller == v2Components.s2Item || caller == v1Components.s2Item) {
            fallbackAddr = v1Components.s2Item;
            callingComponent = NTComponent.S2_ITEM;
        } else if (caller == v2Components.s2Land || caller == v1Components.s2Land) {
            fallbackAddr = v1Components.s2Land;
            callingComponent = NTComponent.S2_LAND;
        } else if (caller == v2Components.s2Citizen || caller == v1Components.s2Citizen) {
            fallbackAddr = v1Components.s2Citizen;
            callingComponent = NTComponent.S2_CITIZEN;
        } else if (caller == v2Components.championChips) {
            fallbackAddr = v1Components.championChips;
            callingComponent = NTComponent.CHAMPION_CHIP;
        } else {
            return (false, fallbackAddr, callingComponent);
        }
        return (true, fallbackAddr, callingComponent);
    }

    function _selectTokenContract(
        address component,
        uint256 tokenId
    ) internal view returns (address) {
        if (component == _components[V2].s1Identity) {
            if (tokenId > fallbackThresholds.s1Identity) {
                return _metadataContracts.s1BoughtIdentity;
            } else {
                //TODO: remove magic numbers probably with some new thresholds mapping
                if (tokenId < 2251) {
                    return _metadataContracts.s1Identity;
                } else if (tokenId < 2281) {
                    return _secondaryMetadataContracts.s1IdentityRareMint;
                } else {
                    return _secondaryMetadataContracts.s1IdentityHandMint;
                }
            }
        } else if (component == _components[V1].s1Identity) {
            return _metadataContracts.s1Identity;
        } else if (component == _components[V1].s1BoughtIdentity) {
            return _metadataContracts.s1BoughtIdentity;
        } else if (
            component == _components[V2].s1Vault ||
            component == _components[V1].s1Vault
        ) {
            return _metadataContracts.s1Vault;
        } else if (
            component == _components[V2].s1Item ||
            component == _components[V1].s1Item
        ) {
            return _metadataContracts.s1Item;
        } else if (
            component == _components[V2].s1Land ||
            component == _components[V1].s1Land
        ) {
            return _metadataContracts.s1Land;
        } else if (
            component == _components[V2].s1Citizen ||
            component == _components[V1].s1Citizen
        ) {
            if (ICitizen(component).getGenderOfTokenId(tokenId)) {
                return _secondaryMetadataContracts.s1CitizenFemale;
            }
            return _metadataContracts.s1Citizen;
        } else if (
            component == _components[V2].s2Identity ||
            component == _components[V1].s2Identity
        ) {
            return _metadataContracts.s2Identity;
        } else if (
            component == _components[V2].s2Item ||
            component == _components[V1].s2Item
        ) {
            return _metadataContracts.s2Item;
        } else if (
            component == _components[V2].s2Land ||
            component == _components[V1].s2Land
        ) {
            return _metadataContracts.s2Land;
        } else if (
            component == _components[V2].s2Citizen ||
            component == _components[V1].s2Citizen
        ) {
            if (ICitizen(component).getGenderOfTokenId(tokenId)) {
                return _secondaryMetadataContracts.s2CitizenFemale;
            }
            return _metadataContracts.s2Citizen;
        } else if (
            component == _components[V2].championChips ||
            component == _components[V1].championChips
        ) {
            return _metadataContracts.championChips;
        }
        revert ComponentNotFound();
    }
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.19;

import {IERC721Enumerable} from "openzeppelin/token/ERC721/extensions/ERC721Enumerable.sol";
import {Initializable} from "openzeppelin-upgradeable/proxy/utils/Initializable.sol";
import {ContextUpgradeable} from "openzeppelin-upgradeable/utils/ContextUpgradeable.sol";
import {NTConfig, NTComponent} from "./NTConfig.sol";

struct CitizenData {
    /* This gets packed into 1 storage slots  */
    // 32 + 32 + 32 + 16 + 64 + 8 + 8 = 192
    uint64 creationTime;
    /* uint32 has a maximum value of over 4.2 billion which should be more than enough */
    /* if it's not...well we can upgrade in a few centuries */
    uint32 identityId;
    uint32 itemCacheId;
    uint32 landDeedId;
    // vault supply is unchanging so can be converted to a uint16 (max of 32k)
    uint16 vaultId;
    uint8 humanRace;
    // One uint8 for flags such as migrated & female. We could probably squeeze human race
    // override into flags but for now i think it'll be easier to just keep it separate
    uint8 flags;
}

abstract contract CitizenPropertiesUpgradeable is Initializable, ContextUpgradeable {
    uint256 constant SECONDS_IN_A_YEAR = 31536000;
    uint8 constant FEMALE_FLAG = 0x01;
    uint8 constant MIGRATED_FLAG = 0x02;
    uint8 constant SPECIAL_MESSAGE_UPDATED = 0x04;

    NTConfig internal _config;

    // Mapping for reward by citizen
    mapping(uint256 => uint256) internal _rewardRateByCitizenId;
    
    // Every citizen information besides the special message & possibly reward rate
    // can be stored within 192 bits.
    // This does make SOME assumptions that might need to be corrected maybe a few
    // thousand years into the future.
    // 1) assumes 64-bit unsigned integer for timestamp (should be enough for our life time)
    // 2) 32-bit unsigned integers for identity, item cache, and land deeds. This would put a cap at around 4 billion...should be good for at least a few years.
    // 3) 16-bit unsigned integer for vaults. There is enough room for a 32-bit integer here, but vaults are capped at 2500. Max would be around 65,000.
    // 4) assumes human race override can fit within 256 values.
    // By storing it all in one mapping it reduces  the number of SSTORE calls,
    // which end up saving around ~100k gas. Using a struct vs int-packing ends up adding negligible extra costs.
    // There's likely some runtime overhead for reading & writing structs from/to storage.
    // But it's not an insanely high extra-cost so we're good to use a struct.
    // We do use bit-flags for migrated citizens and females however.
    mapping(uint256 => CitizenData) internal citizenData;

    // Mapping for special messages uploaded when a citizen was created
    mapping(uint256 => string) internal _specialMessageByCitizenId;

    function __CitizenProperties_init(
        address config
    ) internal onlyInitializing {
        __CitizenProperties_init_unchained(config);
    }

    function __CitizenProperties_init_unchained(
        address config_
    ) internal onlyInitializing {
        _config = NTConfig(config_);
    }

    function config() external view returns (address) {
        return address(_config);
    }

    function getRewardsRateForTokenId(
        uint256 tokenId
    ) public view returns (uint256) {
        return rewardRateByTokenId(tokenId);
    }

    function getCreationTimeOfTokenId(
        uint256 citizenId
    ) public view returns (uint256) {
        CitizenData storage citizen = citizenData[citizenId];
        if (hasFlag(citizen.flags, MIGRATED_FLAG)) {
            return
                CitizenPropertiesUpgradeable(
                    _config.findComponent(NTComponent.S1_CITIZEN, false)
                ).getCreationTimeOfTokenId(citizenId);
        }
        return citizen.creationTime;
    }

    function getIdentityIdOfTokenId(
        uint256 citizenId
    ) public view returns (uint256) {
        CitizenData storage citizen = citizenData[citizenId];
        if (hasFlag(citizen.flags, MIGRATED_FLAG)) {
            return
                CitizenPropertiesUpgradeable(
                    _config.findComponent(NTComponent.S1_CITIZEN, false)
                ).getIdentityIdOfTokenId(citizenId);
        }
        return citizen.identityId;
    }

    function getVaultIdOfTokenId(
        uint256 citizenId
    ) public view returns (uint256) {
        CitizenData storage citizen = citizenData[citizenId];
        if (hasFlag(citizen.flags, MIGRATED_FLAG)) {
            return
                CitizenPropertiesUpgradeable(
                    _config.findComponent(NTComponent.S1_CITIZEN, false)
                ).getVaultIdOfTokenId(citizenId);
        }
        return citizen.vaultId;
    }

    function getItemCacheIdOfTokenId(
        uint256 citizenId
    ) public view returns (uint256) {
        CitizenData storage citizen = citizenData[citizenId];
        if (hasFlag(citizen.flags, MIGRATED_FLAG)) {
            return
                CitizenPropertiesUpgradeable(
                    _config.findComponent(NTComponent.S1_CITIZEN, false)
                ).getItemCacheIdOfTokenId(citizenId);
        }
        return citizen.itemCacheId;
    }

    function getLandDeedIdOfTokenId(
        uint256 citizenId
    ) public view returns (uint256) {
        CitizenData storage citizen = citizenData[citizenId];
        if (hasFlag(citizen.flags, MIGRATED_FLAG)) {
            return
                CitizenPropertiesUpgradeable(
                    _config.findComponent(NTComponent.S1_CITIZEN, false)
                ).getLandDeedIdOfTokenId(citizenId);
        }
        return citizen.landDeedId;
    }

    function getSpecialMessageOfTokenId(
        uint256 citizenId
    ) public view returns (string memory) {
        CitizenData storage citizen = citizenData[citizenId];
        if (hasFlag(citizen.flags, SPECIAL_MESSAGE_UPDATED)) {
            return _specialMessageByCitizenId[citizenId];
        } else if (hasFlag(citizen.flags, MIGRATED_FLAG)) {
            return
                CitizenPropertiesUpgradeable(
                    _config.findComponent(NTComponent.S1_CITIZEN, false)
                ).getSpecialMessageOfTokenId(citizenId);
        } else {
            return _specialMessageByCitizenId[citizenId];
        }
    }

    function getRewardRateOfTokenId(
        uint256 citizenId
    ) public view returns (uint256) {
        CitizenData storage citizen = citizenData[citizenId];
        if (hasFlag(citizen.flags, MIGRATED_FLAG)) {
            return
                CitizenPropertiesUpgradeable(
                    _config.findComponent(NTComponent.S1_CITIZEN, false)
                ).getRewardRateOfTokenId(citizenId);
        }
        return _rewardRateByCitizenId[citizenId];
    }

    function getGenderOfTokenId(uint256 citizenId) external view returns (bool) {
        CitizenData storage citizen = citizenData[citizenId];
        return citizen.flags & FEMALE_FLAG != 0;
    }

    function getCitizenMigrated(uint256 citizenId) external view returns (bool) {
        CitizenData storage citizen = citizenData[citizenId];
        return citizen.flags & MIGRATED_FLAG != 0;
    }

    function hasFlag(uint8 flags, uint8 flag) internal pure returns (bool) {
        return flags & flag != 0;
    }

    function getHumanRaceOverride(
        uint256 citizenId
    ) public view returns (uint256) {
        CitizenData storage citizen = citizenData[citizenId];
        return citizen.humanRace;
    }

    function identityValidated(
        uint256 identityId
    ) internal view returns (bool) {
        IERC721Enumerable identityEnumerable = IERC721Enumerable(
            _config.findComponent(NTComponent.S1_IDENTITY, true)
        );
        return (identityEnumerable.ownerOf(identityId) == _msgSender());
    }

    function vaultValidated(uint256 vaultId) internal view returns (bool) {
        IERC721Enumerable vaultEnumerable = IERC721Enumerable(
            _config.findComponent(NTComponent.S1_VAULT, true)
        );
        return (vaultEnumerable.ownerOf(vaultId) == _msgSender());
    }

    function itemCacheValidated(
        uint256 itemCacheId
    ) internal view returns (bool) {
        IERC721Enumerable itemCacheEnumerable = IERC721Enumerable(
            _config.findComponent(NTComponent.S1_ITEM, true)
        );
        return (itemCacheEnumerable.ownerOf(itemCacheId) == _msgSender());
    }

    function landDeedValidated(
        uint256 landDeedId
    ) internal view returns (bool) {
        IERC721Enumerable landDeedEnumerable = IERC721Enumerable(
            _config.findComponent(NTComponent.S1_LAND, true)
        );
        return (landDeedEnumerable.ownerOf(landDeedId) == _msgSender());
    }

    function calculateCitizenReward(
        uint256 identityId,
        uint256 vaultId
    ) internal returns (uint256) {
        return _config.calculateRewardRate(identityId, vaultId);
    }

    function rewardRateByTokenId(
        uint256 tokenId
    ) internal view returns (uint256) {
        if (tokenId > 0) {
            return
                _rewardRateByCitizenId[tokenId] +
                ((block.timestamp - getCreationTimeOfTokenId(tokenId)) /
                    SECONDS_IN_A_YEAR);
        }
        return 0;
    }

    function _packCitizenDataStruct(
        uint64 _creationTime,
        uint32 identityId,
        uint32 itemCacheId,
        uint32 landDeedId,
        uint16 vaultId,
        uint8 humanRace,
        uint8 flags
    ) internal pure returns (CitizenData memory citizen) {
        citizen.creationTime = _creationTime;
        citizen.identityId = identityId;
        citizen.itemCacheId = itemCacheId;
        citizen.landDeedId = landDeedId;
        citizen.vaultId = vaultId;
        citizen.humanRace = humanRace;
        citizen.flags = flags;
    }
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.19;

interface IMintContract {
    function generateURI(uint256 citizenId) external view returns (string memory);
    function calculateRewardRate(uint256 identityId, uint256 vaultId) external view returns (uint256);
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.19;

interface IComponent {
    function adminClaim(uint256 tokenId, address receiver) external;
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.5.0) (token/ERC721/extensions/IERC721Enumerable.sol)

pragma solidity ^0.8.0;

import "../IERC721Upgradeable.sol";

/**
 * @title ERC-721 Non-Fungible Token Standard, optional enumeration extension
 * @dev See https://eips.ethereum.org/EIPS/eip-721
 */
interface IERC721EnumerableUpgradeable is IERC721Upgradeable {
    /**
     * @dev Returns the total amount of tokens stored by the contract.
     */
    function totalSupply() external view returns (uint256);

    /**
     * @dev Returns a token ID owned by `owner` at a given `index` of its token list.
     * Use along with {balanceOf} to enumerate all of ``owner``'s tokens.
     */
    function tokenOfOwnerByIndex(address owner, uint256 index) external view returns (uint256);

    /**
     * @dev Returns a token ID at a given `index` of all the tokens stored by the contract.
     * Use along with {totalSupply} to enumerate all tokens.
     */
    function tokenByIndex(uint256 index) external view returns (uint256);
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (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`.
     *
     * 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;

    /**
     * @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 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: Note that the caller is responsible to confirm that the recipient is capable of receiving ERC721
     * or else they may be permanently lost. Usage of {safeTransferFrom} prevents loss, though the caller must
     * understand this adds an external call which potentially creates a reentrancy vulnerability.
     *
     * 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 Approve or remove `operator` as an operator for the caller.
     * Operators can call {transferFrom} or {safeTransferFrom} for any token owned by the caller.
     *
     * Requirements:
     *
     * - The `operator` cannot be the caller.
     *
     * Emits an {ApprovalForAll} event.
     */
    function setApprovalForAll(address operator, bool approved) external;

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

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

// 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);
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (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
     *
     * Furthermore, `isContract` will also return true if the target contract within
     * the same transaction is already scheduled for destruction by `SELFDESTRUCT`,
     * which only has an effect at the end of a transaction.
     * ====
     *
     * [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://consensys.net/diligence/blog/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/v0.8.0/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 functionCallWithValue(target, data, 0, "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");
        (bool success, bytes memory returndata) = target.call{value: value}(data);
        return verifyCallResultFromTarget(target, 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) {
        (bool success, bytes memory returndata) = target.staticcall(data);
        return verifyCallResultFromTarget(target, success, returndata, errorMessage);
    }

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

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
     * but performing a delegate call.
     *
     * _Available since v3.4._
     */
    function functionDelegateCall(
        address target,
        bytes memory data,
        string memory errorMessage
    ) internal returns (bytes memory) {
        (bool success, bytes memory returndata) = target.delegatecall(data);
        return verifyCallResultFromTarget(target, success, returndata, errorMessage);
    }

    /**
     * @dev Tool to verify that a low level call to smart-contract was successful, and revert (either by bubbling
     * the revert reason or using the provided one) in case of unsuccessful call or if target was not a contract.
     *
     * _Available since v4.8._
     */
    function verifyCallResultFromTarget(
        address target,
        bool success,
        bytes memory returndata,
        string memory errorMessage
    ) internal view returns (bytes memory) {
        if (success) {
            if (returndata.length == 0) {
                // only check isContract if the call was successful and the return data is empty
                // otherwise we already know that it was a contract
                require(isContract(target), "Address: call to non-contract");
            }
            return returndata;
        } else {
            _revert(returndata, errorMessage);
        }
    }

    /**
     * @dev Tool to verify that a low level call was successful, and revert if it wasn't, either by bubbling the
     * revert reason or 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 {
            _revert(returndata, errorMessage);
        }
    }

    function _revert(bytes memory returndata, string memory errorMessage) private pure {
        // Look for revert reason and bubble it up if present
        if (returndata.length > 0) {
            // The easiest way to bubble the revert reason is using memory via assembly
            /// @solidity memory-safe-assembly
            assembly {
                let returndata_size := mload(returndata)
                revert(add(32, returndata), returndata_size)
            }
        } else {
            revert(errorMessage);
        }
    }
}

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

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

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

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

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

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

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (utils/Strings.sol)

pragma solidity ^0.8.0;

import "./math/MathUpgradeable.sol";
import "./math/SignedMathUpgradeable.sol";

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

    /**
     * @dev Converts a `uint256` to its ASCII `string` decimal representation.
     */
    function toString(uint256 value) internal pure returns (string memory) {
        unchecked {
            uint256 length = MathUpgradeable.log10(value) + 1;
            string memory buffer = new string(length);
            uint256 ptr;
            /// @solidity memory-safe-assembly
            assembly {
                ptr := add(buffer, add(32, length))
            }
            while (true) {
                ptr--;
                /// @solidity memory-safe-assembly
                assembly {
                    mstore8(ptr, byte(mod(value, 10), _SYMBOLS))
                }
                value /= 10;
                if (value == 0) break;
            }
            return buffer;
        }
    }

    /**
     * @dev Converts a `int256` to its ASCII `string` decimal representation.
     */
    function toString(int256 value) internal pure returns (string memory) {
        return string(abi.encodePacked(value < 0 ? "-" : "", toString(SignedMathUpgradeable.abs(value))));
    }

    /**
     * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation.
     */
    function toHexString(uint256 value) internal pure returns (string memory) {
        unchecked {
            return toHexString(value, MathUpgradeable.log256(value) + 1);
        }
    }

    /**
     * @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] = _SYMBOLS[value & 0xf];
            value >>= 4;
        }
        require(value == 0, "Strings: hex length insufficient");
        return string(buffer);
    }

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

    /**
     * @dev Returns true if the two strings are equal.
     */
    function equal(string memory a, string memory b) internal pure returns (bool) {
        return keccak256(bytes(a)) == keccak256(bytes(b));
    }
}

// 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;
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (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 paid in that same unit of exchange.
     */
    function royaltyInfo(
        uint256 tokenId,
        uint256 salePrice
    ) external view returns (address receiver, uint256 royaltyAmount);
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.5.0) (interfaces/draft-IERC1822.sol)

pragma solidity ^0.8.0;

/**
 * @dev ERC1822: Universal Upgradeable Proxy Standard (UUPS) documents a method for upgradeability through a simplified
 * proxy whose upgrades are fully controlled by the current implementation.
 */
interface IERC1822ProxiableUpgradeable {
    /**
     * @dev Returns the storage slot that the proxiable contract assumes is being used to store the implementation
     * address.
     *
     * IMPORTANT: A proxy pointing at a proxiable contract should not be considered proxiable itself, because this risks
     * bricking a proxy that upgrades to it, by delegating to itself until out of gas. Thus it is critical that this
     * function revert if invoked through a proxy.
     */
    function proxiableUUID() external view returns (bytes32);
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (proxy/ERC1967/ERC1967Upgrade.sol)

pragma solidity ^0.8.2;

import "../beacon/IBeaconUpgradeable.sol";
import "../../interfaces/IERC1967Upgradeable.sol";
import "../../interfaces/draft-IERC1822Upgradeable.sol";
import "../../utils/AddressUpgradeable.sol";
import "../../utils/StorageSlotUpgradeable.sol";
import "../utils/Initializable.sol";

/**
 * @dev This abstract contract provides getters and event emitting update functions for
 * https://eips.ethereum.org/EIPS/eip-1967[EIP1967] slots.
 *
 * _Available since v4.1._
 */
abstract contract ERC1967UpgradeUpgradeable is Initializable, IERC1967Upgradeable {
    function __ERC1967Upgrade_init() internal onlyInitializing {
    }

    function __ERC1967Upgrade_init_unchained() internal onlyInitializing {
    }
    // This is the keccak-256 hash of "eip1967.proxy.rollback" subtracted by 1
    bytes32 private constant _ROLLBACK_SLOT = 0x4910fdfa16fed3260ed0e7147f7cc6da11a60208b5b9406d12a635614ffd9143;

    /**
     * @dev Storage slot with the address of the current implementation.
     * This is the keccak-256 hash of "eip1967.proxy.implementation" subtracted by 1, and is
     * validated in the constructor.
     */
    bytes32 internal constant _IMPLEMENTATION_SLOT = 0x360894a13ba1a3210667c828492db98dca3e2076cc3735a920a3ca505d382bbc;

    /**
     * @dev Returns the current implementation address.
     */
    function _getImplementation() internal view returns (address) {
        return StorageSlotUpgradeable.getAddressSlot(_IMPLEMENTATION_SLOT).value;
    }

    /**
     * @dev Stores a new address in the EIP1967 implementation slot.
     */
    function _setImplementation(address newImplementation) private {
        require(AddressUpgradeable.isContract(newImplementation), "ERC1967: new implementation is not a contract");
        StorageSlotUpgradeable.getAddressSlot(_IMPLEMENTATION_SLOT).value = newImplementation;
    }

    /**
     * @dev Perform implementation upgrade
     *
     * Emits an {Upgraded} event.
     */
    function _upgradeTo(address newImplementation) internal {
        _setImplementation(newImplementation);
        emit Upgraded(newImplementation);
    }

    /**
     * @dev Perform implementation upgrade with additional setup call.
     *
     * Emits an {Upgraded} event.
     */
    function _upgradeToAndCall(address newImplementation, bytes memory data, bool forceCall) internal {
        _upgradeTo(newImplementation);
        if (data.length > 0 || forceCall) {
            AddressUpgradeable.functionDelegateCall(newImplementation, data);
        }
    }

    /**
     * @dev Perform implementation upgrade with security checks for UUPS proxies, and additional setup call.
     *
     * Emits an {Upgraded} event.
     */
    function _upgradeToAndCallUUPS(address newImplementation, bytes memory data, bool forceCall) internal {
        // Upgrades from old implementations will perform a rollback test. This test requires the new
        // implementation to upgrade back to the old, non-ERC1822 compliant, implementation. Removing
        // this special case will break upgrade paths from old UUPS implementation to new ones.
        if (StorageSlotUpgradeable.getBooleanSlot(_ROLLBACK_SLOT).value) {
            _setImplementation(newImplementation);
        } else {
            try IERC1822ProxiableUpgradeable(newImplementation).proxiableUUID() returns (bytes32 slot) {
                require(slot == _IMPLEMENTATION_SLOT, "ERC1967Upgrade: unsupported proxiableUUID");
            } catch {
                revert("ERC1967Upgrade: new implementation is not UUPS");
            }
            _upgradeToAndCall(newImplementation, data, forceCall);
        }
    }

    /**
     * @dev Storage slot with the admin of the contract.
     * This is the keccak-256 hash of "eip1967.proxy.admin" subtracted by 1, and is
     * validated in the constructor.
     */
    bytes32 internal constant _ADMIN_SLOT = 0xb53127684a568b3173ae13b9f8a6016e243e63b6e8ee1178d6a717850b5d6103;

    /**
     * @dev Returns the current admin.
     */
    function _getAdmin() internal view returns (address) {
        return StorageSlotUpgradeable.getAddressSlot(_ADMIN_SLOT).value;
    }

    /**
     * @dev Stores a new address in the EIP1967 admin slot.
     */
    function _setAdmin(address newAdmin) private {
        require(newAdmin != address(0), "ERC1967: new admin is the zero address");
        StorageSlotUpgradeable.getAddressSlot(_ADMIN_SLOT).value = newAdmin;
    }

    /**
     * @dev Changes the admin of the proxy.
     *
     * Emits an {AdminChanged} event.
     */
    function _changeAdmin(address newAdmin) internal {
        emit AdminChanged(_getAdmin(), newAdmin);
        _setAdmin(newAdmin);
    }

    /**
     * @dev The storage slot of the UpgradeableBeacon contract which defines the implementation for this proxy.
     * This is bytes32(uint256(keccak256('eip1967.proxy.beacon')) - 1)) and is validated in the constructor.
     */
    bytes32 internal constant _BEACON_SLOT = 0xa3f0ad74e5423aebfd80d3ef4346578335a9a72aeaee59ff6cb3582b35133d50;

    /**
     * @dev Returns the current beacon.
     */
    function _getBeacon() internal view returns (address) {
        return StorageSlotUpgradeable.getAddressSlot(_BEACON_SLOT).value;
    }

    /**
     * @dev Stores a new beacon in the EIP1967 beacon slot.
     */
    function _setBeacon(address newBeacon) private {
        require(AddressUpgradeable.isContract(newBeacon), "ERC1967: new beacon is not a contract");
        require(
            AddressUpgradeable.isContract(IBeaconUpgradeable(newBeacon).implementation()),
            "ERC1967: beacon implementation is not a contract"
        );
        StorageSlotUpgradeable.getAddressSlot(_BEACON_SLOT).value = newBeacon;
    }

    /**
     * @dev Perform beacon upgrade with additional setup call. Note: This upgrades the address of the beacon, it does
     * not upgrade the implementation contained in the beacon (see {UpgradeableBeacon-_setImplementation} for that).
     *
     * Emits a {BeaconUpgraded} event.
     */
    function _upgradeBeaconToAndCall(address newBeacon, bytes memory data, bool forceCall) internal {
        _setBeacon(newBeacon);
        emit BeaconUpgraded(newBeacon);
        if (data.length > 0 || forceCall) {
            AddressUpgradeable.functionDelegateCall(IBeaconUpgradeable(newBeacon).implementation(), data);
        }
    }

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

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.13;

import {IOperatorFilterRegistry} from "../IOperatorFilterRegistry.sol";
import {Initializable} from "openzeppelin-contracts-upgradeable/proxy/utils/Initializable.sol";

/**
 * @title  OperatorFiltererUpgradeable
 * @notice Abstract contract whose constructor automatically registers and optionally subscribes to or copies another
 *         registrant's entries in the OperatorFilterRegistry when the init function is called.
 * @dev    This smart contract is meant to be inherited by token contracts so they can use the following:
 *         - `onlyAllowedOperator` modifier for `transferFrom` and `safeTransferFrom` methods.
 *         - `onlyAllowedOperatorApproval` modifier for `approve` and `setApprovalForAll` methods.
 */
abstract contract OperatorFiltererUpgradeable is Initializable {
    /// @notice Emitted when an operator is not allowed.
    error OperatorNotAllowed(address operator);

    IOperatorFilterRegistry constant OPERATOR_FILTER_REGISTRY =
        IOperatorFilterRegistry(0x000000000000AAeB6D7670E522A718067333cd4E);

    /// @dev The upgradeable initialize function that should be called when the contract is being upgraded.
    function __OperatorFilterer_init(address subscriptionOrRegistrantToCopy, bool subscribe)
        internal
        onlyInitializing
    {
        // If an inheriting token contract is deployed to a network without the registry deployed, the modifier
        // will not revert, but the contract will need to be registered with the registry once it is deployed in
        // order for the modifier to filter addresses.
        if (address(OPERATOR_FILTER_REGISTRY).code.length > 0) {
            if (!OPERATOR_FILTER_REGISTRY.isRegistered(address(this))) {
                if (subscribe) {
                    OPERATOR_FILTER_REGISTRY.registerAndSubscribe(address(this), subscriptionOrRegistrantToCopy);
                } else {
                    if (subscriptionOrRegistrantToCopy != address(0)) {
                        OPERATOR_FILTER_REGISTRY.registerAndCopyEntries(address(this), subscriptionOrRegistrantToCopy);
                    } else {
                        OPERATOR_FILTER_REGISTRY.register(address(this));
                    }
                }
            }
        }
    }

    /**
     * @dev A helper modifier to check if the operator is allowed.
     */
    modifier onlyAllowedOperator(address from) virtual {
        // Allow spending tokens from addresses with balance
        // Note that this still allows listings and marketplaces with escrow to transfer tokens if transferred
        // from an EOA.
        if (from != msg.sender) {
            _checkFilterOperator(msg.sender);
        }
        _;
    }

    /**
     * @dev A helper modifier to check if the operator approval is allowed.
     */
    modifier onlyAllowedOperatorApproval(address operator) virtual {
        _checkFilterOperator(operator);
        _;
    }

    /**
     * @dev A helper function to check if the operator is allowed.
     */
    function _checkFilterOperator(address operator) internal view virtual {
        // Check registry code length to facilitate testing in environments without a deployed registry.
        if (address(OPERATOR_FILTER_REGISTRY).code.length > 0) {
            // under normal circumstances, this function will revert rather than return false, but inheriting or
            // upgraded contracts may specify their own OperatorFilterRegistry implementations, which may behave
            // differently
            if (!OPERATOR_FILTER_REGISTRY.isOperatorAllowed(address(this), operator)) {
                revert OperatorNotAllowed(operator);
            }
        }
    }
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.13;

interface IOperatorFilterRegistry {
    /**
     * @notice Returns true if operator is not filtered for a given token, either by address or codeHash. Also returns
     *         true if supplied registrant address is not registered.
     */
    function isOperatorAllowed(address registrant, address operator) external view returns (bool);

    /**
     * @notice Registers an address with the registry. May be called by address itself or by EIP-173 owner.
     */
    function register(address registrant) external;

    /**
     * @notice Registers an address with the registry and "subscribes" to another address's filtered operators and codeHashes.
     */
    function registerAndSubscribe(address registrant, address subscription) external;

    /**
     * @notice Registers an address with the registry and copies the filtered operators and codeHashes from another
     *         address without subscribing.
     */
    function registerAndCopyEntries(address registrant, address registrantToCopy) external;

    /**
     * @notice Unregisters an address with the registry and removes its subscription. May be called by address itself or by EIP-173 owner.
     *         Note that this does not remove any filtered addresses or codeHashes.
     *         Also note that any subscriptions to this registrant will still be active and follow the existing filtered addresses and codehashes.
     */
    function unregister(address addr) external;

    /**
     * @notice Update an operator address for a registered address - when filtered is true, the operator is filtered.
     */
    function updateOperator(address registrant, address operator, bool filtered) external;

    /**
     * @notice Update multiple operators for a registered address - when filtered is true, the operators will be filtered. Reverts on duplicates.
     */
    function updateOperators(address registrant, address[] calldata operators, bool filtered) external;

    /**
     * @notice Update a codeHash for a registered address - when filtered is true, the codeHash is filtered.
     */
    function updateCodeHash(address registrant, bytes32 codehash, bool filtered) external;

    /**
     * @notice Update multiple codeHashes for a registered address - when filtered is true, the codeHashes will be filtered. Reverts on duplicates.
     */
    function updateCodeHashes(address registrant, bytes32[] calldata codeHashes, bool filtered) external;

    /**
     * @notice Subscribe an address to another registrant's filtered operators and codeHashes. Will remove previous
     *         subscription if present.
     *         Note that accounts with subscriptions may go on to subscribe to other accounts - in this case,
     *         subscriptions will not be forwarded. Instead the former subscription's existing entries will still be
     *         used.
     */
    function subscribe(address registrant, address registrantToSubscribe) external;

    /**
     * @notice Unsubscribe an address from its current subscribed registrant, and optionally copy its filtered operators and codeHashes.
     */
    function unsubscribe(address registrant, bool copyExistingEntries) external;

    /**
     * @notice Get the subscription address of a given registrant, if any.
     */
    function subscriptionOf(address addr) external returns (address registrant);

    /**
     * @notice Get the set of addresses subscribed to a given registrant.
     *         Note that order is not guaranteed as updates are made.
     */
    function subscribers(address registrant) external returns (address[] memory);

    /**
     * @notice Get the subscriber at a given index in the set of addresses subscribed to a given registrant.
     *         Note that order is not guaranteed as updates are made.
     */
    function subscriberAt(address registrant, uint256 index) external returns (address);

    /**
     * @notice Copy filtered operators and codeHashes from a different registrantToCopy to addr.
     */
    function copyEntriesOf(address registrant, address registrantToCopy) external;

    /**
     * @notice Returns true if operator is filtered by a given address or its subscription.
     */
    function isOperatorFiltered(address registrant, address operator) external returns (bool);

    /**
     * @notice Returns true if the hash of an address's code is filtered by a given address or its subscription.
     */
    function isCodeHashOfFiltered(address registrant, address operatorWithCode) external returns (bool);

    /**
     * @notice Returns true if a codeHash is filtered by a given address or its subscription.
     */
    function isCodeHashFiltered(address registrant, bytes32 codeHash) external returns (bool);

    /**
     * @notice Returns a list of filtered operators for a given address or its subscription.
     */
    function filteredOperators(address addr) external returns (address[] memory);

    /**
     * @notice Returns the set of filtered codeHashes for a given address or its subscription.
     *         Note that order is not guaranteed as updates are made.
     */
    function filteredCodeHashes(address addr) external returns (bytes32[] memory);

    /**
     * @notice Returns the filtered operator at the given index of the set of filtered operators for a given address or
     *         its subscription.
     *         Note that order is not guaranteed as updates are made.
     */
    function filteredOperatorAt(address registrant, uint256 index) external returns (address);

    /**
     * @notice Returns the filtered codeHash at the given index of the list of filtered codeHashes for a given address or
     *         its subscription.
     *         Note that order is not guaranteed as updates are made.
     */
    function filteredCodeHashAt(address registrant, uint256 index) external returns (bytes32);

    /**
     * @notice Returns true if an address has registered
     */
    function isRegistered(address addr) external returns (bool);

    /**
     * @dev Convenience method to compute the code hash of an arbitrary contract
     */
    function codeHashOf(address addr) external returns (bytes32);
}

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

pragma solidity ^0.8.0;

import "../IERC721.sol";

/**
 * @title ERC-721 Non-Fungible Token Standard, optional metadata extension
 * @dev See https://eips.ethereum.org/EIPS/eip-721
 */
interface IERC721Metadata is IERC721 {
    /**
     * @dev Returns the token collection name.
     */
    function name() external view returns (string memory);

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

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

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (token/ERC721/IERC721.sol)

pragma solidity ^0.8.0;

import "../../utils/introspection/IERC165.sol";

/**
 * @dev Required interface of an ERC721 compliant contract.
 */
interface IERC721 is IERC165 {
    /**
     * @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`.
     *
     * 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;

    /**
     * @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 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: Note that the caller is responsible to confirm that the recipient is capable of receiving ERC721
     * or else they may be permanently lost. Usage of {safeTransferFrom} prevents loss, though the caller must
     * understand this adds an external call which potentially creates a reentrancy vulnerability.
     *
     * 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 Approve or remove `operator` as an operator for the caller.
     * Operators can call {transferFrom} or {safeTransferFrom} for any token owned by the caller.
     *
     * Requirements:
     *
     * - The `operator` cannot be the caller.
     *
     * Emits an {ApprovalForAll} event.
     */
    function setApprovalForAll(address operator, bool approved) external;

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

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

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.8.0) (token/ERC721/extensions/ERC721Enumerable.sol)

pragma solidity ^0.8.0;

import "../ERC721.sol";
import "./IERC721Enumerable.sol";

/**
 * @dev This implements an optional extension of {ERC721} defined in the EIP that adds
 * enumerability of all the token ids in the contract as well as all token ids owned by each
 * account.
 */
abstract contract ERC721Enumerable is ERC721, IERC721Enumerable {
    // Mapping from owner to list of owned token IDs
    mapping(address => mapping(uint256 => uint256)) private _ownedTokens;

    // Mapping from token ID to index of the owner tokens list
    mapping(uint256 => uint256) private _ownedTokensIndex;

    // Array with all token ids, used for enumeration
    uint256[] private _allTokens;

    // Mapping from token id to position in the allTokens array
    mapping(uint256 => uint256) private _allTokensIndex;

    /**
     * @dev See {IERC165-supportsInterface}.
     */
    function supportsInterface(bytes4 interfaceId) public view virtual override(IERC165, ERC721) returns (bool) {
        return interfaceId == type(IERC721Enumerable).interfaceId || super.supportsInterface(interfaceId);
    }

    /**
     * @dev See {IERC721Enumerable-tokenOfOwnerByIndex}.
     */
    function tokenOfOwnerByIndex(address owner, uint256 index) public view virtual override returns (uint256) {
        require(index < ERC721.balanceOf(owner), "ERC721Enumerable: owner index out of bounds");
        return _ownedTokens[owner][index];
    }

    /**
     * @dev See {IERC721Enumerable-totalSupply}.
     */
    function totalSupply() public view virtual override returns (uint256) {
        return _allTokens.length;
    }

    /**
     * @dev See {IERC721Enumerable-tokenByIndex}.
     */
    function tokenByIndex(uint256 index) public view virtual override returns (uint256) {
        require(index < ERC721Enumerable.totalSupply(), "ERC721Enumerable: global index out of bounds");
        return _allTokens[index];
    }

    /**
     * @dev See {ERC721-_beforeTokenTransfer}.
     */
    function _beforeTokenTransfer(
        address from,
        address to,
        uint256 firstTokenId,
        uint256 batchSize
    ) internal virtual override {
        super._beforeTokenTransfer(from, to, firstTokenId, batchSize);

        if (batchSize > 1) {
            // Will only trigger during construction. Batch transferring (minting) is not available afterwards.
            revert("ERC721Enumerable: consecutive transfers not supported");
        }

        uint256 tokenId = firstTokenId;

        if (from == address(0)) {
            _addTokenToAllTokensEnumeration(tokenId);
        } else if (from != to) {
            _removeTokenFromOwnerEnumeration(from, tokenId);
        }
        if (to == address(0)) {
            _removeTokenFromAllTokensEnumeration(tokenId);
        } else if (to != from) {
            _addTokenToOwnerEnumeration(to, tokenId);
        }
    }

    /**
     * @dev Private function to add a token to this extension's ownership-tracking data structures.
     * @param to address representing the new owner of the given token ID
     * @param tokenId uint256 ID of the token to be added to the tokens list of the given address
     */
    function _addTokenToOwnerEnumeration(address to, uint256 tokenId) private {
        uint256 length = ERC721.balanceOf(to);
        _ownedTokens[to][length] = tokenId;
        _ownedTokensIndex[tokenId] = length;
    }

    /**
     * @dev Private function to add a token to this extension's token tracking data structures.
     * @param tokenId uint256 ID of the token to be added to the tokens list
     */
    function _addTokenToAllTokensEnumeration(uint256 tokenId) private {
        _allTokensIndex[tokenId] = _allTokens.length;
        _allTokens.push(tokenId);
    }

    /**
     * @dev Private function to remove a token from this extension's ownership-tracking data structures. Note that
     * while the token is not assigned a new owner, the `_ownedTokensIndex` mapping is _not_ updated: this allows for
     * gas optimizations e.g. when performing a transfer operation (avoiding double writes).
     * This has O(1) time complexity, but alters the order of the _ownedTokens array.
     * @param from address representing the previous owner of the given token ID
     * @param tokenId uint256 ID of the token to be removed from the tokens list of the given address
     */
    function _removeTokenFromOwnerEnumeration(address from, uint256 tokenId) private {
        // To prevent a gap in from's tokens array, we store the last token in the index of the token to delete, and
        // then delete the last slot (swap and pop).

        uint256 lastTokenIndex = ERC721.balanceOf(from) - 1;
        uint256 tokenIndex = _ownedTokensIndex[tokenId];

        // When the token to delete is the last token, the swap operation is unnecessary
        if (tokenIndex != lastTokenIndex) {
            uint256 lastTokenId = _ownedTokens[from][lastTokenIndex];

            _ownedTokens[from][tokenIndex] = lastTokenId; // Move the last token to the slot of the to-delete token
            _ownedTokensIndex[lastTokenId] = tokenIndex; // Update the moved token's index
        }

        // This also deletes the contents at the last position of the array
        delete _ownedTokensIndex[tokenId];
        delete _ownedTokens[from][lastTokenIndex];
    }

    /**
     * @dev Private function to remove a token from this extension's token tracking data structures.
     * This has O(1) time complexity, but alters the order of the _allTokens array.
     * @param tokenId uint256 ID of the token to be removed from the tokens list
     */
    function _removeTokenFromAllTokensEnumeration(uint256 tokenId) private {
        // To prevent a gap in the tokens array, we store the last token in the index of the token to delete, and
        // then delete the last slot (swap and pop).

        uint256 lastTokenIndex = _allTokens.length - 1;
        uint256 tokenIndex = _allTokensIndex[tokenId];

        // When the token to delete is the last token, the swap operation is unnecessary. However, since this occurs so
        // rarely (when the last minted token is burnt) that we still do the swap here to avoid the gas cost of adding
        // an 'if' statement (like in _removeTokenFromOwnerEnumeration)
        uint256 lastTokenId = _allTokens[lastTokenIndex];

        _allTokens[tokenIndex] = lastTokenId; // Move the last token to the slot of the to-delete token
        _allTokensIndex[lastTokenId] = tokenIndex; // Update the moved token's index

        // This also deletes the contents at the last position of the array
        delete _allTokensIndex[tokenId];
        _allTokens.pop();
    }
}

// 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);
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (utils/math/Math.sol)

pragma solidity ^0.8.0;

/**
 * @dev Standard math utilities missing in the Solidity language.
 */
library MathUpgradeable {
    enum Rounding {
        Down, // Toward negative infinity
        Up, // Toward infinity
        Zero // Toward zero
    }

    /**
     * @dev Returns the largest of two numbers.
     */
    function max(uint256 a, uint256 b) internal pure returns (uint256) {
        return a > b ? a : b;
    }

    /**
     * @dev Returns the smallest of two numbers.
     */
    function min(uint256 a, uint256 b) internal pure returns (uint256) {
        return a < b ? a : b;
    }

    /**
     * @dev Returns the average of two numbers. The result is rounded towards
     * zero.
     */
    function average(uint256 a, uint256 b) internal pure returns (uint256) {
        // (a + b) / 2 can overflow.
        return (a & b) + (a ^ b) / 2;
    }

    /**
     * @dev Returns the ceiling of the division of two numbers.
     *
     * This differs from standard division with `/` in that it rounds up instead
     * of rounding down.
     */
    function ceilDiv(uint256 a, uint256 b) internal pure returns (uint256) {
        // (a + b - 1) / b can overflow on addition, so we distribute.
        return a == 0 ? 0 : (a - 1) / b + 1;
    }

    /**
     * @notice Calculates floor(x * y / denominator) with full precision. Throws if result overflows a uint256 or denominator == 0
     * @dev Original credit to Remco Bloemen under MIT license (https://xn--2-umb.com/21/muldiv)
     * with further edits by Uniswap Labs also under MIT license.
     */
    function mulDiv(uint256 x, uint256 y, uint256 denominator) internal pure returns (uint256 result) {
        unchecked {
            // 512-bit multiply [prod1 prod0] = x * y. Compute the product mod 2^256 and mod 2^256 - 1, then use
            // use the Chinese Remainder Theorem to reconstruct the 512 bit result. The result is stored in two 256
            // variables such that product = prod1 * 2^256 + prod0.
            uint256 prod0; // Least significant 256 bits of the product
            uint256 prod1; // Most significant 256 bits of the product
            assembly {
                let mm := mulmod(x, y, not(0))
                prod0 := mul(x, y)
                prod1 := sub(sub(mm, prod0), lt(mm, prod0))
            }

            // Handle non-overflow cases, 256 by 256 division.
            if (prod1 == 0) {
                // Solidity will revert if denominator == 0, unlike the div opcode on its own.
                // The surrounding unchecked block does not change this fact.
                // See https://docs.soliditylang.org/en/latest/control-structures.html#checked-or-unchecked-arithmetic.
                return prod0 / denominator;
            }

            // Make sure the result is less than 2^256. Also prevents denominator == 0.
            require(denominator > prod1, "Math: mulDiv overflow");

            ///////////////////////////////////////////////
            // 512 by 256 division.
            ///////////////////////////////////////////////

            // Make division exact by subtracting the remainder from [prod1 prod0].
            uint256 remainder;
            assembly {
                // Compute remainder using mulmod.
                remainder := mulmod(x, y, denominator)

                // Subtract 256 bit number from 512 bit number.
                prod1 := sub(prod1, gt(remainder, prod0))
                prod0 := sub(prod0, remainder)
            }

            // Factor powers of two out of denominator and compute largest power of two divisor of denominator. Always >= 1.
            // See https://cs.stackexchange.com/q/138556/92363.

            // Does not overflow because the denominator cannot be zero at this stage in the function.
            uint256 twos = denominator & (~denominator + 1);
            assembly {
                // Divide denominator by twos.
                denominator := div(denominator, twos)

                // Divide [prod1 prod0] by twos.
                prod0 := div(prod0, twos)

                // Flip twos such that it is 2^256 / twos. If twos is zero, then it becomes one.
                twos := add(div(sub(0, twos), twos), 1)
            }

            // Shift in bits from prod1 into prod0.
            prod0 |= prod1 * twos;

            // Invert denominator mod 2^256. Now that denominator is an odd number, it has an inverse modulo 2^256 such
            // that denominator * inv = 1 mod 2^256. Compute the inverse by starting with a seed that is correct for
            // four bits. That is, denominator * inv = 1 mod 2^4.
            uint256 inverse = (3 * denominator) ^ 2;

            // Use the Newton-Raphson iteration to improve the precision. Thanks to Hensel's lifting lemma, this also works
            // in modular arithmetic, doubling the correct bits in each step.
            inverse *= 2 - denominator * inverse; // inverse mod 2^8
            inverse *= 2 - denominator * inverse; // inverse mod 2^16
            inverse *= 2 - denominator * inverse; // inverse mod 2^32
            inverse *= 2 - denominator * inverse; // inverse mod 2^64
            inverse *= 2 - denominator * inverse; // inverse mod 2^128
            inverse *= 2 - denominator * inverse; // inverse mod 2^256

            // Because the division is now exact we can divide by multiplying with the modular inverse of denominator.
            // This will give us the correct result modulo 2^256. Since the preconditions guarantee that the outcome is
            // less than 2^256, this is the final result. We don't need to compute the high bits of the result and prod1
            // is no longer required.
            result = prod0 * inverse;
            return result;
        }
    }

    /**
     * @notice Calculates x * y / denominator with full precision, following the selected rounding direction.
     */
    function mulDiv(uint256 x, uint256 y, uint256 denominator, Rounding rounding) internal pure returns (uint256) {
        uint256 result = mulDiv(x, y, denominator);
        if (rounding == Rounding.Up && mulmod(x, y, denominator) > 0) {
            result += 1;
        }
        return result;
    }

    /**
     * @dev Returns the square root of a number. If the number is not a perfect square, the value is rounded down.
     *
     * Inspired by Henry S. Warren, Jr.'s "Hacker's Delight" (Chapter 11).
     */
    function sqrt(uint256 a) internal pure returns (uint256) {
        if (a == 0) {
            return 0;
        }

        // For our first guess, we get the biggest power of 2 which is smaller than the square root of the target.
        //
        // We know that the "msb" (most significant bit) of our target number `a` is a power of 2 such that we have
        // `msb(a) <= a < 2*msb(a)`. This value can be written `msb(a)=2**k` with `k=log2(a)`.
        //
        // This can be rewritten `2**log2(a) <= a < 2**(log2(a) + 1)`
        // → `sqrt(2**k) <= sqrt(a) < sqrt(2**(k+1))`
        // → `2**(k/2) <= sqrt(a) < 2**((k+1)/2) <= 2**(k/2 + 1)`
        //
        // Consequently, `2**(log2(a) / 2)` is a good first approximation of `sqrt(a)` with at least 1 correct bit.
        uint256 result = 1 << (log2(a) >> 1);

        // At this point `result` is an estimation with one bit of precision. We know the true value is a uint128,
        // since it is the square root of a uint256. Newton's method converges quadratically (precision doubles at
        // every iteration). We thus need at most 7 iteration to turn our partial result with one bit of precision
        // into the expected uint128 result.
        unchecked {
            result = (result + a / result) >> 1;
            result = (result + a / result) >> 1;
            result = (result + a / result) >> 1;
            result = (result + a / result) >> 1;
            result = (result + a / result) >> 1;
            result = (result + a / result) >> 1;
            result = (result + a / result) >> 1;
            return min(result, a / result);
        }
    }

    /**
     * @notice Calculates sqrt(a), following the selected rounding direction.
     */
    function sqrt(uint256 a, Rounding rounding) internal pure returns (uint256) {
        unchecked {
            uint256 result = sqrt(a);
            return result + (rounding == Rounding.Up && result * result < a ? 1 : 0);
        }
    }

    /**
     * @dev Return the log in base 2, rounded down, of a positive value.
     * Returns 0 if given 0.
     */
    function log2(uint256 value) internal pure returns (uint256) {
        uint256 result = 0;
        unchecked {
            if (value >> 128 > 0) {
                value >>= 128;
                result += 128;
            }
            if (value >> 64 > 0) {
                value >>= 64;
                result += 64;
            }
            if (value >> 32 > 0) {
                value >>= 32;
                result += 32;
            }
            if (value >> 16 > 0) {
                value >>= 16;
                result += 16;
            }
            if (value >> 8 > 0) {
                value >>= 8;
                result += 8;
            }
            if (value >> 4 > 0) {
                value >>= 4;
                result += 4;
            }
            if (value >> 2 > 0) {
                value >>= 2;
                result += 2;
            }
            if (value >> 1 > 0) {
                result += 1;
            }
        }
        return result;
    }

    /**
     * @dev Return the log in base 2, following the selected rounding direction, of a positive value.
     * Returns 0 if given 0.
     */
    function log2(uint256 value, Rounding rounding) internal pure returns (uint256) {
        unchecked {
            uint256 result = log2(value);
            return result + (rounding == Rounding.Up && 1 << result < value ? 1 : 0);
        }
    }

    /**
     * @dev Return the log in base 10, rounded down, of a positive value.
     * Returns 0 if given 0.
     */
    function log10(uint256 value) internal pure returns (uint256) {
        uint256 result = 0;
        unchecked {
            if (value >= 10 ** 64) {
                value /= 10 ** 64;
                result += 64;
            }
            if (value >= 10 ** 32) {
                value /= 10 ** 32;
                result += 32;
            }
            if (value >= 10 ** 16) {
                value /= 10 ** 16;
                result += 16;
            }
            if (value >= 10 ** 8) {
                value /= 10 ** 8;
                result += 8;
            }
            if (value >= 10 ** 4) {
                value /= 10 ** 4;
                result += 4;
            }
            if (value >= 10 ** 2) {
                value /= 10 ** 2;
                result += 2;
            }
            if (value >= 10 ** 1) {
                result += 1;
            }
        }
        return result;
    }

    /**
     * @dev Return the log in base 10, following the selected rounding direction, of a positive value.
     * Returns 0 if given 0.
     */
    function log10(uint256 value, Rounding rounding) internal pure returns (uint256) {
        unchecked {
            uint256 result = log10(value);
            return result + (rounding == Rounding.Up && 10 ** result < value ? 1 : 0);
        }
    }

    /**
     * @dev Return the log in base 256, rounded down, of a positive value.
     * Returns 0 if given 0.
     *
     * Adding one to the result gives the number of pairs of hex symbols needed to represent `value` as a hex string.
     */
    function log256(uint256 value) internal pure returns (uint256) {
        uint256 result = 0;
        unchecked {
            if (value >> 128 > 0) {
                value >>= 128;
                result += 16;
            }
            if (value >> 64 > 0) {
                value >>= 64;
                result += 8;
            }
            if (value >> 32 > 0) {
                value >>= 32;
                result += 4;
            }
            if (value >> 16 > 0) {
                value >>= 16;
                result += 2;
            }
            if (value >> 8 > 0) {
                result += 1;
            }
        }
        return result;
    }

    /**
     * @dev Return the log in base 256, following the selected rounding direction, of a positive value.
     * Returns 0 if given 0.
     */
    function log256(uint256 value, Rounding rounding) internal pure returns (uint256) {
        unchecked {
            uint256 result = log256(value);
            return result + (rounding == Rounding.Up && 1 << (result << 3) < value ? 1 : 0);
        }
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.8.0) (utils/math/SignedMath.sol)

pragma solidity ^0.8.0;

/**
 * @dev Standard signed math utilities missing in the Solidity language.
 */
library SignedMathUpgradeable {
    /**
     * @dev Returns the largest of two signed numbers.
     */
    function max(int256 a, int256 b) internal pure returns (int256) {
        return a > b ? a : b;
    }

    /**
     * @dev Returns the smallest of two signed numbers.
     */
    function min(int256 a, int256 b) internal pure returns (int256) {
        return a < b ? a : b;
    }

    /**
     * @dev Returns the average of two signed numbers without overflow.
     * The result is rounded towards zero.
     */
    function average(int256 a, int256 b) internal pure returns (int256) {
        // Formula from the book "Hacker's Delight"
        int256 x = (a & b) + ((a ^ b) >> 1);
        return x + (int256(uint256(x) >> 255) & (a ^ b));
    }

    /**
     * @dev Returns the absolute unsigned value of a signed value.
     */
    function abs(int256 n) internal pure returns (uint256) {
        unchecked {
            // must be unchecked in order to support `n = type(int256).min`
            return uint256(n >= 0 ? n : -n);
        }
    }
}

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

pragma solidity ^0.8.0;

/**
 * @dev This is the interface that {BeaconProxy} expects of its beacon.
 */
interface IBeaconUpgradeable {
    /**
     * @dev Must return an address that can be used as a delegate call target.
     *
     * {BeaconProxy} will check that this address is a contract.
     */
    function implementation() external view returns (address);
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (interfaces/IERC1967.sol)

pragma solidity ^0.8.0;

/**
 * @dev ERC-1967: Proxy Storage Slots. This interface contains the events defined in the ERC.
 *
 * _Available since v4.8.3._
 */
interface IERC1967Upgradeable {
    /**
     * @dev Emitted when the implementation is upgraded.
     */
    event Upgraded(address indexed implementation);

    /**
     * @dev Emitted when the admin account has changed.
     */
    event AdminChanged(address previousAdmin, address newAdmin);

    /**
     * @dev Emitted when the beacon is changed.
     */
    event BeaconUpgraded(address indexed beacon);
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (utils/StorageSlot.sol)
// This file was procedurally generated from scripts/generate/templates/StorageSlot.js.

pragma solidity ^0.8.0;

/**
 * @dev Library for reading and writing primitive types to specific storage slots.
 *
 * Storage slots are often used to avoid storage conflict when dealing with upgradeable contracts.
 * This library helps with reading and writing to such slots without the need for inline assembly.
 *
 * The functions in this library return Slot structs that contain a `value` member that can be used to read or write.
 *
 * Example usage to set ERC1967 implementation slot:
 * ```solidity
 * contract ERC1967 {
 *     bytes32 internal constant _IMPLEMENTATION_SLOT = 0x360894a13ba1a3210667c828492db98dca3e2076cc3735a920a3ca505d382bbc;
 *
 *     function _getImplementation() internal view returns (address) {
 *         return StorageSlot.getAddressSlot(_IMPLEMENTATION_SLOT).value;
 *     }
 *
 *     function _setImplementation(address newImplementation) internal {
 *         require(Address.isContract(newImplementation), "ERC1967: new implementation is not a contract");
 *         StorageSlot.getAddressSlot(_IMPLEMENTATION_SLOT).value = newImplementation;
 *     }
 * }
 * ```
 *
 * _Available since v4.1 for `address`, `bool`, `bytes32`, `uint256`._
 * _Available since v4.9 for `string`, `bytes`._
 */
library StorageSlotUpgradeable {
    struct AddressSlot {
        address value;
    }

    struct BooleanSlot {
        bool value;
    }

    struct Bytes32Slot {
        bytes32 value;
    }

    struct Uint256Slot {
        uint256 value;
    }

    struct StringSlot {
        string value;
    }

    struct BytesSlot {
        bytes value;
    }

    /**
     * @dev Returns an `AddressSlot` with member `value` located at `slot`.
     */
    function getAddressSlot(bytes32 slot) internal pure returns (AddressSlot storage r) {
        /// @solidity memory-safe-assembly
        assembly {
            r.slot := slot
        }
    }

    /**
     * @dev Returns an `BooleanSlot` with member `value` located at `slot`.
     */
    function getBooleanSlot(bytes32 slot) internal pure returns (BooleanSlot storage r) {
        /// @solidity memory-safe-assembly
        assembly {
            r.slot := slot
        }
    }

    /**
     * @dev Returns an `Bytes32Slot` with member `value` located at `slot`.
     */
    function getBytes32Slot(bytes32 slot) internal pure returns (Bytes32Slot storage r) {
        /// @solidity memory-safe-assembly
        assembly {
            r.slot := slot
        }
    }

    /**
     * @dev Returns an `Uint256Slot` with member `value` located at `slot`.
     */
    function getUint256Slot(bytes32 slot) internal pure returns (Uint256Slot storage r) {
        /// @solidity memory-safe-assembly
        assembly {
            r.slot := slot
        }
    }

    /**
     * @dev Returns an `StringSlot` with member `value` located at `slot`.
     */
    function getStringSlot(bytes32 slot) internal pure returns (StringSlot storage r) {
        /// @solidity memory-safe-assembly
        assembly {
            r.slot := slot
        }
    }

    /**
     * @dev Returns an `StringSlot` representation of the string storage pointer `store`.
     */
    function getStringSlot(string storage store) internal pure returns (StringSlot storage r) {
        /// @solidity memory-safe-assembly
        assembly {
            r.slot := store.slot
        }
    }

    /**
     * @dev Returns an `BytesSlot` with member `value` located at `slot`.
     */
    function getBytesSlot(bytes32 slot) internal pure returns (BytesSlot storage r) {
        /// @solidity memory-safe-assembly
        assembly {
            r.slot := slot
        }
    }

    /**
     * @dev Returns an `BytesSlot` representation of the bytes storage pointer `store`.
     */
    function getBytesSlot(bytes storage store) internal pure returns (BytesSlot storage r) {
        /// @solidity memory-safe-assembly
        assembly {
            r.slot := store.slot
        }
    }
}

// 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 IERC165 {
    /**
     * @dev Returns true if this contract implements the interface defined by
     * `interfaceId`. See the corresponding
     * https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section]
     * to learn more about how these ids are created.
     *
     * This function call must use less than 30 000 gas.
     */
    function supportsInterface(bytes4 interfaceId) external view returns (bool);
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (token/ERC721/ERC721.sol)

pragma solidity ^0.8.0;

import "./IERC721.sol";
import "./IERC721Receiver.sol";
import "./extensions/IERC721Metadata.sol";
import "../../utils/Address.sol";
import "../../utils/Context.sol";
import "../../utils/Strings.sol";
import "../../utils/introspection/ERC165.sol";

/**
 * @dev Implementation of https://eips.ethereum.org/EIPS/eip-721[ERC721] Non-Fungible Token Standard, including
 * the Metadata extension, but not including the Enumerable extension, which is available separately as
 * {ERC721Enumerable}.
 */
contract ERC721 is Context, ERC165, IERC721, IERC721Metadata {
    using Address for address;
    using Strings for uint256;

    // Token name
    string private _name;

    // Token symbol
    string private _symbol;

    // Mapping from token ID to owner address
    mapping(uint256 => address) private _owners;

    // Mapping owner address to token count
    mapping(address => uint256) private _balances;

    // 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;

    /**
     * @dev Initializes the contract by setting a `name` and a `symbol` to the token collection.
     */
    constructor(string memory name_, string memory symbol_) {
        _name = name_;
        _symbol = symbol_;
    }

    /**
     * @dev See {IERC165-supportsInterface}.
     */
    function supportsInterface(bytes4 interfaceId) public view virtual override(ERC165, IERC165) returns (bool) {
        return
            interfaceId == type(IERC721).interfaceId ||
            interfaceId == type(IERC721Metadata).interfaceId ||
            super.supportsInterface(interfaceId);
    }

    /**
     * @dev See {IERC721-balanceOf}.
     */
    function balanceOf(address owner) public view virtual override returns (uint256) {
        require(owner != address(0), "ERC721: address zero is not a valid owner");
        return _balances[owner];
    }

    /**
     * @dev See {IERC721-ownerOf}.
     */
    function ownerOf(uint256 tokenId) public view virtual override returns (address) {
        address owner = _ownerOf(tokenId);
        require(owner != address(0), "ERC721: invalid token ID");
        return owner;
    }

    /**
     * @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) {
        _requireMinted(tokenId);

        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 overridden in child contracts.
     */
    function _baseURI() internal view virtual returns (string memory) {
        return "";
    }

    /**
     * @dev See {IERC721-approve}.
     */
    function approve(address to, uint256 tokenId) public virtual override {
        address owner = ERC721.ownerOf(tokenId);
        require(to != owner, "ERC721: approval to current owner");

        require(
            _msgSender() == owner || isApprovedForAll(owner, _msgSender()),
            "ERC721: approve caller is not token owner or approved for all"
        );

        _approve(to, tokenId);
    }

    /**
     * @dev See {IERC721-getApproved}.
     */
    function getApproved(uint256 tokenId) public view virtual override returns (address) {
        _requireMinted(tokenId);

        return _tokenApprovals[tokenId];
    }

    /**
     * @dev See {IERC721-setApprovalForAll}.
     */
    function setApprovalForAll(address operator, bool approved) public virtual override {
        _setApprovalForAll(_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 {
        //solhint-disable-next-line max-line-length
        require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721: caller is not token owner or approved");

        _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 {
        require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721: caller is not token owner or approved");
        _safeTransfer(from, to, tokenId, data);
    }

    /**
     * @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.
     *
     * `data` is additional data, it has no specified format and it is sent in call to `to`.
     *
     * This internal function is equivalent to {safeTransferFrom}, and can be used to e.g.
     * implement alternative mechanisms to perform token transfer, such as signature-based.
     *
     * Requirements:
     *
     * - `from` cannot be the zero address.
     * - `to` cannot be the zero address.
     * - `tokenId` token must exist and be owned by `from`.
     * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
     *
     * Emits a {Transfer} event.
     */
    function _safeTransfer(address from, address to, uint256 tokenId, bytes memory data) internal virtual {
        _transfer(from, to, tokenId);
        require(_checkOnERC721Received(from, to, tokenId, data), "ERC721: transfer to non ERC721Receiver implementer");
    }

    /**
     * @dev Returns the owner of the `tokenId`. Does NOT revert if token doesn't exist
     */
    function _ownerOf(uint256 tokenId) internal view virtual returns (address) {
        return _owners[tokenId];
    }

    /**
     * @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`),
     * and stop existing when they are burned (`_burn`).
     */
    function _exists(uint256 tokenId) internal view virtual returns (bool) {
        return _ownerOf(tokenId) != address(0);
    }

    /**
     * @dev Returns whether `spender` is allowed to manage `tokenId`.
     *
     * Requirements:
     *
     * - `tokenId` must exist.
     */
    function _isApprovedOrOwner(address spender, uint256 tokenId) internal view virtual returns (bool) {
        address owner = ERC721.ownerOf(tokenId);
        return (spender == owner || isApprovedForAll(owner, spender) || getApproved(tokenId) == spender);
    }

    /**
     * @dev Safely mints `tokenId` and transfers it to `to`.
     *
     * Requirements:
     *
     * - `tokenId` must not exist.
     * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
     *
     * Emits a {Transfer} event.
     */
    function _safeMint(address to, uint256 tokenId) internal virtual {
        _safeMint(to, tokenId, "");
    }

    /**
     * @dev Same as {xref-ERC721-_safeMint-address-uint256-}[`_safeMint`], with an additional `data` parameter which is
     * forwarded in {IERC721Receiver-onERC721Received} to contract recipients.
     */
    function _safeMint(address to, uint256 tokenId, bytes memory data) internal virtual {
        _mint(to, tokenId);
        require(
            _checkOnERC721Received(address(0), to, tokenId, data),
            "ERC721: transfer to non ERC721Receiver implementer"
        );
    }

    /**
     * @dev Mints `tokenId` and transfers it to `to`.
     *
     * WARNING: Usage of this method is discouraged, use {_safeMint} whenever possible
     *
     * Requirements:
     *
     * - `tokenId` must not exist.
     * - `to` cannot be the zero address.
     *
     * Emits a {Transfer} event.
     */
    function _mint(address to, uint256 tokenId) internal virtual {
        require(to != address(0), "ERC721: mint to the zero address");
        require(!_exists(tokenId), "ERC721: token already minted");

        _beforeTokenTransfer(address(0), to, tokenId, 1);

        // Check that tokenId was not minted by `_beforeTokenTransfer` hook
        require(!_exists(tokenId), "ERC721: token already minted");

        unchecked {
            // Will not overflow unless all 2**256 token ids are minted to the same owner.
            // Given that tokens are minted one by one, it is impossible in practice that
            // this ever happens. Might change if we allow batch minting.
            // The ERC fails to describe this case.
            _balances[to] += 1;
        }

        _owners[tokenId] = to;

        emit Transfer(address(0), to, tokenId);

        _afterTokenTransfer(address(0), to, tokenId, 1);
    }

    /**
     * @dev Destroys `tokenId`.
     * The approval is cleared when the token is burned.
     * This is an internal function that does not check if the sender is authorized to operate on the token.
     *
     * Requirements:
     *
     * - `tokenId` must exist.
     *
     * Emits a {Transfer} event.
     */
    function _burn(uint256 tokenId) internal virtual {
        address owner = ERC721.ownerOf(tokenId);

        _beforeTokenTransfer(owner, address(0), tokenId, 1);

        // Update ownership in case tokenId was transferred by `_beforeTokenTransfer` hook
        owner = ERC721.ownerOf(tokenId);

        // Clear approvals
        delete _tokenApprovals[tokenId];

        unchecked {
            // Cannot overflow, as that would require more tokens to be burned/transferred
            // out than the owner initially received through minting and transferring in.
            _balances[owner] -= 1;
        }
        delete _owners[tokenId];

        emit Transfer(owner, address(0), tokenId);

        _afterTokenTransfer(owner, address(0), tokenId, 1);
    }

    /**
     * @dev Transfers `tokenId` from `from` to `to`.
     *  As opposed to {transferFrom}, this imposes no restrictions on msg.sender.
     *
     * 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) internal virtual {
        require(ERC721.ownerOf(tokenId) == from, "ERC721: transfer from incorrect owner");
        require(to != address(0), "ERC721: transfer to the zero address");

        _beforeTokenTransfer(from, to, tokenId, 1);

        // Check that tokenId was not transferred by `_beforeTokenTransfer` hook
        require(ERC721.ownerOf(tokenId) == from, "ERC721: transfer from incorrect owner");

        // Clear approvals from the previous owner
        delete _tokenApprovals[tokenId];

        unchecked {
            // `_balances[from]` cannot overflow for the same reason as described in `_burn`:
            // `from`'s balance is the number of token held, which is at least one before the current
            // transfer.
            // `_balances[to]` could overflow in the conditions described in `_mint`. That would require
            // all 2**256 token ids to be minted, which in practice is impossible.
            _balances[from] -= 1;
            _balances[to] += 1;
        }
        _owners[tokenId] = to;

        emit Transfer(from, to, tokenId);

        _afterTokenTransfer(from, to, tokenId, 1);
    }

    /**
     * @dev Approve `to` to operate on `tokenId`
     *
     * Emits an {Approval} event.
     */
    function _approve(address to, uint256 tokenId) internal virtual {
        _tokenApprovals[tokenId] = to;
        emit Approval(ERC721.ownerOf(tokenId), to, tokenId);
    }

    /**
     * @dev Approve `operator` to operate on all of `owner` tokens
     *
     * Emits an {ApprovalForAll} event.
     */
    function _setApprovalForAll(address owner, address operator, bool approved) internal virtual {
        require(owner != operator, "ERC721: approve to caller");
        _operatorApprovals[owner][operator] = approved;
        emit ApprovalForAll(owner, operator, approved);
    }

    /**
     * @dev Reverts if the `tokenId` has not been minted yet.
     */
    function _requireMinted(uint256 tokenId) internal view virtual {
        require(_exists(tokenId), "ERC721: invalid token ID");
    }

    /**
     * @dev Internal function to invoke {IERC721Receiver-onERC721Received} on a target address.
     * The call is not executed if the target address is not a 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 _checkOnERC721Received(
        address from,
        address to,
        uint256 tokenId,
        bytes memory data
    ) private returns (bool) {
        if (to.isContract()) {
            try IERC721Receiver(to).onERC721Received(_msgSender(), from, tokenId, data) returns (bytes4 retval) {
                return retval == IERC721Receiver.onERC721Received.selector;
            } catch (bytes memory reason) {
                if (reason.length == 0) {
                    revert("ERC721: transfer to non ERC721Receiver implementer");
                } else {
                    /// @solidity memory-safe-assembly
                    assembly {
                        revert(add(32, reason), mload(reason))
                    }
                }
            }
        } else {
            return true;
        }
    }

    /**
     * @dev Hook that is called before any token transfer. This includes minting and burning. If {ERC721Consecutive} is
     * used, the hook may be called as part of a consecutive (batch) mint, as indicated by `batchSize` greater than 1.
     *
     * Calling conditions:
     *
     * - When `from` and `to` are both non-zero, ``from``'s tokens will be transferred to `to`.
     * - When `from` is zero, the tokens will be minted for `to`.
     * - When `to` is zero, ``from``'s tokens will be burned.
     * - `from` and `to` are never both zero.
     * - `batchSize` is non-zero.
     *
     * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
     */
    function _beforeTokenTransfer(address from, address to, uint256 firstTokenId, uint256 batchSize) internal virtual {}

    /**
     * @dev Hook that is called after any token transfer. This includes minting and burning. If {ERC721Consecutive} is
     * used, the hook may be called as part of a consecutive (batch) mint, as indicated by `batchSize` greater than 1.
     *
     * Calling conditions:
     *
     * - When `from` and `to` are both non-zero, ``from``'s tokens were transferred to `to`.
     * - When `from` is zero, the tokens were minted for `to`.
     * - When `to` is zero, ``from``'s tokens were burned.
     * - `from` and `to` are never both zero.
     * - `batchSize` is non-zero.
     *
     * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
     */
    function _afterTokenTransfer(address from, address to, uint256 firstTokenId, uint256 batchSize) internal virtual {}

    /**
     * @dev Unsafe write access to the balances, used by extensions that "mint" tokens using an {ownerOf} override.
     *
     * WARNING: Anyone calling this MUST ensure that the balances remain consistent with the ownership. The invariant
     * being that for any address `a` the value returned by `balanceOf(a)` must be equal to the number of tokens such
     * that `ownerOf(tokenId)` is `a`.
     */
    // solhint-disable-next-line func-name-mixedcase
    function __unsafe_increaseBalance(address account, uint256 amount) internal {
        _balances[account] += amount;
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.5.0) (token/ERC721/extensions/IERC721Enumerable.sol)

pragma solidity ^0.8.0;

import "../IERC721.sol";

/**
 * @title ERC-721 Non-Fungible Token Standard, optional enumeration extension
 * @dev See https://eips.ethereum.org/EIPS/eip-721
 */
interface IERC721Enumerable is IERC721 {
    /**
     * @dev Returns the total amount of tokens stored by the contract.
     */
    function totalSupply() external view returns (uint256);

    /**
     * @dev Returns a token ID owned by `owner` at a given `index` of its token list.
     * Use along with {balanceOf} to enumerate all of ``owner``'s tokens.
     */
    function tokenOfOwnerByIndex(address owner, uint256 index) external view returns (uint256);

    /**
     * @dev Returns a token ID at a given `index` of all the tokens stored by the contract.
     * Use along with {totalSupply} to enumerate all tokens.
     */
    function tokenByIndex(uint256 index) external view returns (uint256);
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.6.0) (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 IERC721Receiver {
    /**
     * @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);
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (utils/Address.sol)

pragma solidity ^0.8.1;

/**
 * @dev Collection of functions related to the address type
 */
library Address {
    /**
     * @dev Returns true if `account` is a contract.
     *
     * [IMPORTANT]
     * ====
     * It is unsafe to assume that an address for which this function returns
     * false is an externally-owned account (EOA) and not a contract.
     *
     * Among others, `isContract` will return false for the following
     * types of addresses:
     *
     *  - an externally-owned account
     *  - a contract in construction
     *  - an address where a contract will be created
     *  - an address where a contract lived, but was destroyed
     *
     * Furthermore, `isContract` will also return true if the target contract within
     * the same transaction is already scheduled for destruction by `SELFDESTRUCT`,
     * which only has an effect at the end of a transaction.
     * ====
     *
     * [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://consensys.net/diligence/blog/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/v0.8.0/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 functionCallWithValue(target, data, 0, "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");
        (bool success, bytes memory returndata) = target.call{value: value}(data);
        return verifyCallResultFromTarget(target, 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) {
        (bool success, bytes memory returndata) = target.staticcall(data);
        return verifyCallResultFromTarget(target, success, returndata, errorMessage);
    }

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

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
     * but performing a delegate call.
     *
     * _Available since v3.4._
     */
    function functionDelegateCall(
        address target,
        bytes memory data,
        string memory errorMessage
    ) internal returns (bytes memory) {
        (bool success, bytes memory returndata) = target.delegatecall(data);
        return verifyCallResultFromTarget(target, success, returndata, errorMessage);
    }

    /**
     * @dev Tool to verify that a low level call to smart-contract was successful, and revert (either by bubbling
     * the revert reason or using the provided one) in case of unsuccessful call or if target was not a contract.
     *
     * _Available since v4.8._
     */
    function verifyCallResultFromTarget(
        address target,
        bool success,
        bytes memory returndata,
        string memory errorMessage
    ) internal view returns (bytes memory) {
        if (success) {
            if (returndata.length == 0) {
                // only check isContract if the call was successful and the return data is empty
                // otherwise we already know that it was a contract
                require(isContract(target), "Address: call to non-contract");
            }
            return returndata;
        } else {
            _revert(returndata, errorMessage);
        }
    }

    /**
     * @dev Tool to verify that a low level call was successful, and revert if it wasn't, either by bubbling the
     * revert reason or 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 {
            _revert(returndata, errorMessage);
        }
    }

    function _revert(bytes memory returndata, string memory errorMessage) private pure {
        // Look for revert reason and bubble it up if present
        if (returndata.length > 0) {
            // The easiest way to bubble the revert reason is using memory via assembly
            /// @solidity memory-safe-assembly
            assembly {
                let returndata_size := mload(returndata)
                revert(add(32, returndata), returndata_size)
            }
        } else {
            revert(errorMessage);
        }
    }
}

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

pragma solidity ^0.8.0;

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

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

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (utils/Strings.sol)

pragma solidity ^0.8.0;

import "./math/Math.sol";
import "./math/SignedMath.sol";

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

    /**
     * @dev Converts a `uint256` to its ASCII `string` decimal representation.
     */
    function toString(uint256 value) internal pure returns (string memory) {
        unchecked {
            uint256 length = Math.log10(value) + 1;
            string memory buffer = new string(length);
            uint256 ptr;
            /// @solidity memory-safe-assembly
            assembly {
                ptr := add(buffer, add(32, length))
            }
            while (true) {
                ptr--;
                /// @solidity memory-safe-assembly
                assembly {
                    mstore8(ptr, byte(mod(value, 10), _SYMBOLS))
                }
                value /= 10;
                if (value == 0) break;
            }
            return buffer;
        }
    }

    /**
     * @dev Converts a `int256` to its ASCII `string` decimal representation.
     */
    function toString(int256 value) internal pure returns (string memory) {
        return string(abi.encodePacked(value < 0 ? "-" : "", toString(SignedMath.abs(value))));
    }

    /**
     * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation.
     */
    function toHexString(uint256 value) internal pure returns (string memory) {
        unchecked {
            return toHexString(value, Math.log256(value) + 1);
        }
    }

    /**
     * @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] = _SYMBOLS[value & 0xf];
            value >>= 4;
        }
        require(value == 0, "Strings: hex length insufficient");
        return string(buffer);
    }

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

    /**
     * @dev Returns true if the two strings are equal.
     */
    function equal(string memory a, string memory b) internal pure returns (bool) {
        return keccak256(bytes(a)) == keccak256(bytes(b));
    }
}

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

pragma solidity ^0.8.0;

import "./IERC165.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 ERC165 is IERC165 {
    /**
     * @dev See {IERC165-supportsInterface}.
     */
    function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
        return interfaceId == type(IERC165).interfaceId;
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (utils/math/Math.sol)

pragma solidity ^0.8.0;

/**
 * @dev Standard math utilities missing in the Solidity language.
 */
library Math {
    enum Rounding {
        Down, // Toward negative infinity
        Up, // Toward infinity
        Zero // Toward zero
    }

    /**
     * @dev Returns the largest of two numbers.
     */
    function max(uint256 a, uint256 b) internal pure returns (uint256) {
        return a > b ? a : b;
    }

    /**
     * @dev Returns the smallest of two numbers.
     */
    function min(uint256 a, uint256 b) internal pure returns (uint256) {
        return a < b ? a : b;
    }

    /**
     * @dev Returns the average of two numbers. The result is rounded towards
     * zero.
     */
    function average(uint256 a, uint256 b) internal pure returns (uint256) {
        // (a + b) / 2 can overflow.
        return (a & b) + (a ^ b) / 2;
    }

    /**
     * @dev Returns the ceiling of the division of two numbers.
     *
     * This differs from standard division with `/` in that it rounds up instead
     * of rounding down.
     */
    function ceilDiv(uint256 a, uint256 b) internal pure returns (uint256) {
        // (a + b - 1) / b can overflow on addition, so we distribute.
        return a == 0 ? 0 : (a - 1) / b + 1;
    }

    /**
     * @notice Calculates floor(x * y / denominator) with full precision. Throws if result overflows a uint256 or denominator == 0
     * @dev Original credit to Remco Bloemen under MIT license (https://xn--2-umb.com/21/muldiv)
     * with further edits by Uniswap Labs also under MIT license.
     */
    function mulDiv(uint256 x, uint256 y, uint256 denominator) internal pure returns (uint256 result) {
        unchecked {
            // 512-bit multiply [prod1 prod0] = x * y. Compute the product mod 2^256 and mod 2^256 - 1, then use
            // use the Chinese Remainder Theorem to reconstruct the 512 bit result. The result is stored in two 256
            // variables such that product = prod1 * 2^256 + prod0.
            uint256 prod0; // Least significant 256 bits of the product
            uint256 prod1; // Most significant 256 bits of the product
            assembly {
                let mm := mulmod(x, y, not(0))
                prod0 := mul(x, y)
                prod1 := sub(sub(mm, prod0), lt(mm, prod0))
            }

            // Handle non-overflow cases, 256 by 256 division.
            if (prod1 == 0) {
                // Solidity will revert if denominator == 0, unlike the div opcode on its own.
                // The surrounding unchecked block does not change this fact.
                // See https://docs.soliditylang.org/en/latest/control-structures.html#checked-or-unchecked-arithmetic.
                return prod0 / denominator;
            }

            // Make sure the result is less than 2^256. Also prevents denominator == 0.
            require(denominator > prod1, "Math: mulDiv overflow");

            ///////////////////////////////////////////////
            // 512 by 256 division.
            ///////////////////////////////////////////////

            // Make division exact by subtracting the remainder from [prod1 prod0].
            uint256 remainder;
            assembly {
                // Compute remainder using mulmod.
                remainder := mulmod(x, y, denominator)

                // Subtract 256 bit number from 512 bit number.
                prod1 := sub(prod1, gt(remainder, prod0))
                prod0 := sub(prod0, remainder)
            }

            // Factor powers of two out of denominator and compute largest power of two divisor of denominator. Always >= 1.
            // See https://cs.stackexchange.com/q/138556/92363.

            // Does not overflow because the denominator cannot be zero at this stage in the function.
            uint256 twos = denominator & (~denominator + 1);
            assembly {
                // Divide denominator by twos.
                denominator := div(denominator, twos)

                // Divide [prod1 prod0] by twos.
                prod0 := div(prod0, twos)

                // Flip twos such that it is 2^256 / twos. If twos is zero, then it becomes one.
                twos := add(div(sub(0, twos), twos), 1)
            }

            // Shift in bits from prod1 into prod0.
            prod0 |= prod1 * twos;

            // Invert denominator mod 2^256. Now that denominator is an odd number, it has an inverse modulo 2^256 such
            // that denominator * inv = 1 mod 2^256. Compute the inverse by starting with a seed that is correct for
            // four bits. That is, denominator * inv = 1 mod 2^4.
            uint256 inverse = (3 * denominator) ^ 2;

            // Use the Newton-Raphson iteration to improve the precision. Thanks to Hensel's lifting lemma, this also works
            // in modular arithmetic, doubling the correct bits in each step.
            inverse *= 2 - denominator * inverse; // inverse mod 2^8
            inverse *= 2 - denominator * inverse; // inverse mod 2^16
            inverse *= 2 - denominator * inverse; // inverse mod 2^32
            inverse *= 2 - denominator * inverse; // inverse mod 2^64
            inverse *= 2 - denominator * inverse; // inverse mod 2^128
            inverse *= 2 - denominator * inverse; // inverse mod 2^256

            // Because the division is now exact we can divide by multiplying with the modular inverse of denominator.
            // This will give us the correct result modulo 2^256. Since the preconditions guarantee that the outcome is
            // less than 2^256, this is the final result. We don't need to compute the high bits of the result and prod1
            // is no longer required.
            result = prod0 * inverse;
            return result;
        }
    }

    /**
     * @notice Calculates x * y / denominator with full precision, following the selected rounding direction.
     */
    function mulDiv(uint256 x, uint256 y, uint256 denominator, Rounding rounding) internal pure returns (uint256) {
        uint256 result = mulDiv(x, y, denominator);
        if (rounding == Rounding.Up && mulmod(x, y, denominator) > 0) {
            result += 1;
        }
        return result;
    }

    /**
     * @dev Returns the square root of a number. If the number is not a perfect square, the value is rounded down.
     *
     * Inspired by Henry S. Warren, Jr.'s "Hacker's Delight" (Chapter 11).
     */
    function sqrt(uint256 a) internal pure returns (uint256) {
        if (a == 0) {
            return 0;
        }

        // For our first guess, we get the biggest power of 2 which is smaller than the square root of the target.
        //
        // We know that the "msb" (most significant bit) of our target number `a` is a power of 2 such that we have
        // `msb(a) <= a < 2*msb(a)`. This value can be written `msb(a)=2**k` with `k=log2(a)`.
        //
        // This can be rewritten `2**log2(a) <= a < 2**(log2(a) + 1)`
        // → `sqrt(2**k) <= sqrt(a) < sqrt(2**(k+1))`
        // → `2**(k/2) <= sqrt(a) < 2**((k+1)/2) <= 2**(k/2 + 1)`
        //
        // Consequently, `2**(log2(a) / 2)` is a good first approximation of `sqrt(a)` with at least 1 correct bit.
        uint256 result = 1 << (log2(a) >> 1);

        // At this point `result` is an estimation with one bit of precision. We know the true value is a uint128,
        // since it is the square root of a uint256. Newton's method converges quadratically (precision doubles at
        // every iteration). We thus need at most 7 iteration to turn our partial result with one bit of precision
        // into the expected uint128 result.
        unchecked {
            result = (result + a / result) >> 1;
            result = (result + a / result) >> 1;
            result = (result + a / result) >> 1;
            result = (result + a / result) >> 1;
            result = (result + a / result) >> 1;
            result = (result + a / result) >> 1;
            result = (result + a / result) >> 1;
            return min(result, a / result);
        }
    }

    /**
     * @notice Calculates sqrt(a), following the selected rounding direction.
     */
    function sqrt(uint256 a, Rounding rounding) internal pure returns (uint256) {
        unchecked {
            uint256 result = sqrt(a);
            return result + (rounding == Rounding.Up && result * result < a ? 1 : 0);
        }
    }

    /**
     * @dev Return the log in base 2, rounded down, of a positive value.
     * Returns 0 if given 0.
     */
    function log2(uint256 value) internal pure returns (uint256) {
        uint256 result = 0;
        unchecked {
            if (value >> 128 > 0) {
                value >>= 128;
                result += 128;
            }
            if (value >> 64 > 0) {
                value >>= 64;
                result += 64;
            }
            if (value >> 32 > 0) {
                value >>= 32;
                result += 32;
            }
            if (value >> 16 > 0) {
                value >>= 16;
                result += 16;
            }
            if (value >> 8 > 0) {
                value >>= 8;
                result += 8;
            }
            if (value >> 4 > 0) {
                value >>= 4;
                result += 4;
            }
            if (value >> 2 > 0) {
                value >>= 2;
                result += 2;
            }
            if (value >> 1 > 0) {
                result += 1;
            }
        }
        return result;
    }

    /**
     * @dev Return the log in base 2, following the selected rounding direction, of a positive value.
     * Returns 0 if given 0.
     */
    function log2(uint256 value, Rounding rounding) internal pure returns (uint256) {
        unchecked {
            uint256 result = log2(value);
            return result + (rounding == Rounding.Up && 1 << result < value ? 1 : 0);
        }
    }

    /**
     * @dev Return the log in base 10, rounded down, of a positive value.
     * Returns 0 if given 0.
     */
    function log10(uint256 value) internal pure returns (uint256) {
        uint256 result = 0;
        unchecked {
            if (value >= 10 ** 64) {
                value /= 10 ** 64;
                result += 64;
            }
            if (value >= 10 ** 32) {
                value /= 10 ** 32;
                result += 32;
            }
            if (value >= 10 ** 16) {
                value /= 10 ** 16;
                result += 16;
            }
            if (value >= 10 ** 8) {
                value /= 10 ** 8;
                result += 8;
            }
            if (value >= 10 ** 4) {
                value /= 10 ** 4;
                result += 4;
            }
            if (value >= 10 ** 2) {
                value /= 10 ** 2;
                result += 2;
            }
            if (value >= 10 ** 1) {
                result += 1;
            }
        }
        return result;
    }

    /**
     * @dev Return the log in base 10, following the selected rounding direction, of a positive value.
     * Returns 0 if given 0.
     */
    function log10(uint256 value, Rounding rounding) internal pure returns (uint256) {
        unchecked {
            uint256 result = log10(value);
            return result + (rounding == Rounding.Up && 10 ** result < value ? 1 : 0);
        }
    }

    /**
     * @dev Return the log in base 256, rounded down, of a positive value.
     * Returns 0 if given 0.
     *
     * Adding one to the result gives the number of pairs of hex symbols needed to represent `value` as a hex string.
     */
    function log256(uint256 value) internal pure returns (uint256) {
        uint256 result = 0;
        unchecked {
            if (value >> 128 > 0) {
                value >>= 128;
                result += 16;
            }
            if (value >> 64 > 0) {
                value >>= 64;
                result += 8;
            }
            if (value >> 32 > 0) {
                value >>= 32;
                result += 4;
            }
            if (value >> 16 > 0) {
                value >>= 16;
                result += 2;
            }
            if (value >> 8 > 0) {
                result += 1;
            }
        }
        return result;
    }

    /**
     * @dev Return the log in base 256, following the selected rounding direction, of a positive value.
     * Returns 0 if given 0.
     */
    function log256(uint256 value, Rounding rounding) internal pure returns (uint256) {
        unchecked {
            uint256 result = log256(value);
            return result + (rounding == Rounding.Up && 1 << (result << 3) < value ? 1 : 0);
        }
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.8.0) (utils/math/SignedMath.sol)

pragma solidity ^0.8.0;

/**
 * @dev Standard signed math utilities missing in the Solidity language.
 */
library SignedMath {
    /**
     * @dev Returns the largest of two signed numbers.
     */
    function max(int256 a, int256 b) internal pure returns (int256) {
        return a > b ? a : b;
    }

    /**
     * @dev Returns the smallest of two signed numbers.
     */
    function min(int256 a, int256 b) internal pure returns (int256) {
        return a < b ? a : b;
    }

    /**
     * @dev Returns the average of two signed numbers without overflow.
     * The result is rounded towards zero.
     */
    function average(int256 a, int256 b) internal pure returns (int256) {
        // Formula from the book "Hacker's Delight"
        int256 x = (a & b) + ((a ^ b) >> 1);
        return x + (int256(uint256(x) >> 255) & (a ^ b));
    }

    /**
     * @dev Returns the absolute unsigned value of a signed value.
     */
    function abs(int256 n) internal pure returns (uint256) {
        unchecked {
            // must be unchecked in order to support `n = type(int256).min`
            return uint256(n >= 0 ? n : -n);
        }
    }
}

{
  "remappings": [
    "@openzeppelin/=lib/openzeppelin-contracts/",
    "Bytes2.0/=lib/Bytes2.0/contracts/",
    "bytes/=lib/Bytes2.0/contracts/",
    "ds-test/=lib/forge-std/lib/ds-test/src/",
    "erc4626-tests/=lib/operator-filter-registry/lib/openzeppelin-contracts/lib/erc4626-tests/",
    "forge-std/=lib/forge-std/src/",
    "nt-with-oracle/=lib/nt-with-oracle/contracts/",
    "openzeppelin-contracts-upgradeable/=lib/openzeppelin-contracts-upgradeable/contracts/",
    "openzeppelin-contracts/=lib/openzeppelin-contracts/",
    "openzeppelin-upgradeable/=lib/openzeppelin-contracts-upgradeable/contracts/",
    "openzeppelin/=lib/openzeppelin-contracts/contracts/",
    "operator-filter-registry/=lib/operator-filter-registry/"
  ],
  "optimizer": {
    "enabled": true,
    "runs": 20
  },
  "metadata": {
    "bytecodeHash": "ipfs",
    "appendCBOR": true
  },
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "devdoc",
        "userdoc",
        "metadata",
        "abi"
      ]
    }
  },
  "evmVersion": "paris",
  "libraries": {}
}

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