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// contracts/token/ERC721/sovereign/SovereignNFT.sol
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;

import "royalty-guard/extensions/RoyaltyGuardDeadmanTrigger.sol";

import "../LazySovereignNFT.sol";

contract LazySovereignNFTRoyaltyGuardDeadmanTrigger is
    LazySovereignNFT,
    RoyaltyGuardDeadmanTrigger
{
    /*//////////////////////////////////////////////////////////////////////////
                              ERC165 LOGIC
  //////////////////////////////////////////////////////////////////////////*/

    /// @dev See {IERC165-supportsInterface}.
    function supportsInterface(bytes4 _interfaceId)
        public
        view
        virtual
        override(LazySovereignNFT, RoyaltyGuard)
        returns (bool)
    {
        return
            RoyaltyGuard.supportsInterface(_interfaceId) ||
            LazySovereignNFT.supportsInterface(_interfaceId);
    }

    /*//////////////////////////////////////////////////////////////////////////
                          RoyaltyGuard LOGIC
  //////////////////////////////////////////////////////////////////////////*/

    /// @inheritdoc RoyaltyGuard
    function hasAdminPermission(address _addr)
        public
        view
        virtual
        override(IRoyaltyGuard, RoyaltyGuard)
        returns (bool)
    {
        return _addr == owner();
    }

    /// @dev Guards {approve} based on the type of list and depending if {_spender} is on the list.
    function approve(address _spender, uint256 _id)
        public
        virtual
        override
        checkList(_spender)
    {
        super.approve(_spender, _id);
    }

    /// @dev Guards {setApprovalForAll} based on the type of list and depending if {_operator} is on the list.
    function setApprovalForAll(address _operator, bool _approved)
        public
        virtual
        override
        checkList(_operator)
    {
        super.setApprovalForAll(_operator, _approved);
    }
}

// SPDX-License-Identifier: MIT
pragma solidity 0.8.15;

import {IRoyaltyGuardDeadmanTrigger} from "../extensions/IRoyaltyGuardDeadmanTrigger.sol";
import {IRoyaltyGuard, RoyaltyGuard} from "../RoyaltyGuard.sol";

import {EnumerableSet} from "openzeppelin-contracts/utils/structs/EnumerableSet.sol";
import {ERC165} from "openzeppelin-contracts/utils/introspection/ERC165.sol";

/// @title RoyaltyGuard
/// @author highland, koloz, van arman
/// @notice An abstract contract with the necessary functions, structures, modifiers to ensure royalties are paid.
/// @dev Inherriting this contract requires implementing {hasAdminPermission} and connecting the desired functions to the {checkList} modifier.
abstract contract RoyaltyGuardDeadmanTrigger is IRoyaltyGuardDeadmanTrigger, RoyaltyGuard {

  /*//////////////////////////////////////////////////////////////////////////
                          Private Contract Storage
  //////////////////////////////////////////////////////////////////////////*/

  uint256 private deadmanListTriggerAfterDatetime;

  /*//////////////////////////////////////////////////////////////////////////
                            Admin Functions
  //////////////////////////////////////////////////////////////////////////*/

  /// @dev Only the contract owner can call this function.
  /// @inheritdoc IRoyaltyGuardDeadmanTrigger
  function setDeadmanListTriggerRenewalDuration(uint256 _numYears) external virtual onlyAdmin {
    _setDeadmanTriggerRenewalInYears(_numYears);
  }

  /*//////////////////////////////////////////////////////////////////////////
                          Public Write Functions
  //////////////////////////////////////////////////////////////////////////*/

  /// @dev Can only be called if deadmanListTriggerAfterDatetime is in the past.
  /// @inheritdoc IRoyaltyGuardDeadmanTrigger
  function activateDeadmanListTrigger() external virtual {
    if (deadmanListTriggerAfterDatetime > block.timestamp) revert IRoyaltyGuardDeadmanTrigger.DeadmanTriggerStillActive();
    _setListType(IRoyaltyGuard.ListType.OFF);
    emit DeadmanTriggerActivated(msg.sender);
  }

  /*//////////////////////////////////////////////////////////////////////////
                          Public Read Functions
  //////////////////////////////////////////////////////////////////////////*/

  /// @inheritdoc IRoyaltyGuardDeadmanTrigger
  function getDeadmanTriggerAvailableDatetime() external virtual view returns (uint256) {
    return deadmanListTriggerAfterDatetime;
  }

  /*//////////////////////////////////////////////////////////////////////////
                            Internal Functions
  //////////////////////////////////////////////////////////////////////////*/

  /// @dev Internal method to set deadman trigger datetime. Main usage is constructor.
  function _setDeadmanTriggerRenewalInYears(uint256 _numYears) internal {
    uint256 newDatetime = block.timestamp + _numYears * 365 days;
    emit DeadmanTriggerDatetimeUpdated(msg.sender, deadmanListTriggerAfterDatetime, newDatetime);
    deadmanListTriggerAfterDatetime = newDatetime;
  }
}

// contracts/token/ERC721/sovereign/SovereignNFT.sol
// SPDX-License-Identifier: MIT
pragma solidity 0.8.15;

import "openzeppelin-contracts-upgradeable/token/ERC721/ERC721Upgradeable.sol";
import "openzeppelin-contracts-upgradeable/token/ERC721/extensions/ERC721BurnableUpgradeable.sol";
import "openzeppelin-contracts-upgradeable/utils/introspection/ERC165Upgradeable.sol";
import "openzeppelin-contracts-upgradeable/access/OwnableUpgradeable.sol";
import "openzeppelin-contracts-upgradeable/utils/CountersUpgradeable.sol";
import "openzeppelin-contracts-upgradeable/utils/math/SafeMathUpgradeable.sol";
import "../../../extensions/ITokenCreator.sol";
import "../../../extensions/ERC2981Upgradeable.sol";

/**
 * @title LazySovereignNFT
 * @dev This contract implements an ERC721 compliant NFT (Non-Fungible Token) with lazy minting.
 */

contract LazySovereignNFT is
    OwnableUpgradeable,
    ERC165Upgradeable,
    ERC721Upgradeable,
    ITokenCreator,
    ERC721BurnableUpgradeable,
    ERC2981Upgradeable
{
    using SafeMathUpgradeable for uint256;
    using StringsUpgradeable for uint256;
    using CountersUpgradeable for CountersUpgradeable.Counter;

    /////////////////////////////////////////////////////////////////////////////
    // Structs
    /////////////////////////////////////////////////////////////////////////////
    struct MintConfig {
        uint256 numberOfTokens;
        string baseURI;
        bool lockedMetadata;
    }

    /////////////////////////////////////////////////////////////////////////////
    // Storage
    /////////////////////////////////////////////////////////////////////////////
    //////////////////////////////////////////////
    // Public
    //////////////////////////////////////////////
    // Disabled flag
    bool public disabled;

    // Maximum number of tokens that can be minted
    uint256 public maxTokens;

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

    // Mapping from addresses that can mint outside of the owner
    mapping(address => bool) private minterAddresses;

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

    // Counter to keep track of the current token id.
    CountersUpgradeable.Counter private tokenIdCounter;

    // Mint batches for batch minting
    MintConfig private mintConfig;

    /////////////////////////////////////////////////////////////////////////////
    // Events
    /////////////////////////////////////////////////////////////////////////////
    // Emits when the contract is disabled.
    event ContractDisabled(address indexed user);

    // Emits when prepared for minting.
    event PrepareMint(uint256 indexed numberOfTokens, string baseURI);

    // Emits when metadata is locked.
    event MetadataLocked(string baseURI);

    // Emits when metadata is updated.
    event MetadataUpdated(string baseURI);

    // Emits when token URI is updated.
    event TokenURIUpdated(uint256 indexed tokenId, string metadataUri);

    /////////////////////////////////////////////////////////////////////////////
    // Init
    /////////////////////////////////////////////////////////////////////////////
    /**
     * @dev Contract initialization function.
     * @param _name The name of the NFT contract.
     * @param _symbol The symbol of the NFT contract.
     * @param _creator The address of the contract creator.
     * @param _maxTokens The maximum number of tokens that can be minted.
     */
    function init(
        string calldata _name,
        string calldata _symbol,
        address _creator,
        uint256 _maxTokens
    ) public initializer {
        require(_creator != address(0), "creator cannot be null address");
        _setDefaultRoyaltyPercentage(10);
        disabled = false;
        maxTokens = _maxTokens;

        __Ownable_init();
        __ERC721_init(_name, _symbol);
        __ERC165_init();
        __ERC2981__init();

        _setDefaultRoyaltyReceiver(_creator);

        super.transferOwnership(_creator);
    }

    /////////////////////////////////////////////////////////////////////////////
    // Modifiers
    /////////////////////////////////////////////////////////////////////////////
    /**
     * @dev Modifier to check if the contract is not disabled.
     */
    modifier ifNotDisabled() {
        require(!disabled, "Contract must not be disabled.");
        _;
    }

    /////////////////////////////////////////////////////////////////////////////
    // Write Functions
    /////////////////////////////////////////////////////////////////////////////

    /**
     * @dev Set a minter for the contract
     * @param _minter address of the minter.
     * @param _isMinter bool of whether the address is a minter.
     */
    function setMinterApproval(
        address _minter,
        bool _isMinter
    ) public onlyOwner ifNotDisabled {
        minterAddresses[_minter] = _isMinter;
    }

    /**
     * @dev Prepare a minting batch with a specified base URI and number of tokens.
     * @param _baseURI The base URI for token metadata.
     * @param _numberOfTokens The number of tokens to prepare for minting.
     */
    function prepareMint(
        string calldata _baseURI,
        uint256 _numberOfTokens
    ) public onlyOwner ifNotDisabled {
        _prepareMint(_baseURI, _numberOfTokens);
    }

    /**
     * @dev Prepare a minting batch with a specified base URI and number of tokens, and assign a minter address.
     * @param _baseURI The base URI for token metadata.
     * @param _numberOfTokens The number of tokens to prepare for minting.
     * @param _minter The address of the minter.
     */
    function prepareMintWithMinter(
        string calldata _baseURI,
        uint256 _numberOfTokens,
        address _minter
    ) public onlyOwner ifNotDisabled {
        _prepareMint(_baseURI, _numberOfTokens);
        minterAddresses[_minter] = true;
    }

    /**
     * @dev Mint a new token to the specified receiver.
     * @param _receiver The address of the token receiver.
     * @return uint256 Token Id of the new token.
     */
    function mintTo(
        address _receiver
    ) external ifNotDisabled returns (uint256) {
        require(
            msg.sender == owner() || minterAddresses[msg.sender],
            "lazyMint::only owner or approved minter can mint"
        );
        return
            _createToken(
                _receiver,
                getDefaultRoyaltyPercentage(),
                getDefaultRoyaltyReceiver()
            );
    }

    /**
     * @dev Delete a token with the given ID.
     * @param _tokenId The ID of the token to delete.
     */
    function deleteToken(uint256 _tokenId) public {
        require(
            ownerOf(_tokenId) == msg.sender,
            "Must be the owner of the token."
        );
        burn(_tokenId);
    }

    /**
     * @dev Disable the contract, preventing further minting.
     */
    function disableContract() public onlyOwner {
        disabled = true;
        emit ContractDisabled(msg.sender);
    }

    /**
     * @dev Set the default royalty receiver address.
     * @param _receiver The address of the default royalty receiver.
     */
    function setDefaultRoyaltyReceiver(address _receiver) external onlyOwner {
        _setDefaultRoyaltyReceiver(_receiver);
    }

    /**
     * @dev Set a specific royalty receiver address for a token.
     * @param _receiver The address of the royalty receiver.
     * @param _tokenId The ID of the token.
     */
    function setRoyaltyReceiverForToken(
        address _receiver,
        uint256 _tokenId
    ) external onlyOwner {
        royaltyReceivers[_tokenId] = _receiver;
    }

    /**
     * @dev Update the base URI.
     * @param _baseURI The new base URI.
     */
    function updateBaseURI(string calldata _baseURI) external onlyOwner {
        require(
            !mintConfig.lockedMetadata,
            "updateBaseURI::metadata is locked"
        );

        mintConfig.baseURI = _baseURI;
        emit MetadataUpdated(_baseURI);
    }

    /**
     * @dev Update the token metadata URI.
     * @param _metadataUri The new metadata URI.
     */
    function updateTokenURI(
        uint256 _tokenId,
        string calldata _metadataUri
    ) external onlyOwner {
        require(
            !mintConfig.lockedMetadata,
            "updateTokenURI::metadata is locked"
        );

        _tokenURIs[_tokenId] = _metadataUri;
        emit TokenURIUpdated(_tokenId, _metadataUri);
    }

    /**
     * @dev Lock the metadata to prevent  further updates.
     */
    function lockBaseURI() external onlyOwner {
        emit MetadataLocked(mintConfig.baseURI);
        mintConfig.lockedMetadata = true;
    }

    /////////////////////////////////////////////////////////////////////////////
    // Read Functions
    /////////////////////////////////////////////////////////////////////////////
    /**
     * @dev Checks if the supplied address is approved for minting
     * @param _address The address of the minter.
     * @return bool, whether the address is approved for minting.
     */
    function isApprovedMinter(address _address) public view returns (bool) {
        return minterAddresses[_address];
    }

    /**
     * @dev Get the address of the token creator for a given token ID.
     * @param _tokenId The ID of the token.
     * @return address of the token creator.
     */
    function tokenCreator(
        uint256 _tokenId
    ) public view override returns (address payable) {
        return payable(owner());
    }

    /**
     * @dev Get the current minting configuration.
     * @return mintConfig the mint config.
     */
    function getMintConfig() public view returns (MintConfig memory) {
        return mintConfig;
    }

    /**
     * @dev Get the token URI for a specific token. If a token has a set URI,
     * it will return that, otherwise it will return the token URI computed from
     * the base URI.
     * @param _tokenId The ID of the token.
     * @return The token's URI.
     */
    function tokenURI(
        uint256 _tokenId
    ) public view virtual override returns (string memory) {
        if (bytes(_tokenURIs[_tokenId]).length > 0) {
            return _tokenURIs[_tokenId];
        }
        return
            string(
                abi.encodePacked(
                    mintConfig.baseURI,
                    "/",
                    _tokenId.toString(),
                    ".json"
                )
            );
    }

    /**
     * @dev Get the total supply of tokens in existence.
     * @return The total supply of tokens.
     */
    function totalSupply() public view virtual returns (uint256) {
        return tokenIdCounter.current();
    }

    /**
     * @dev See {IERC165-supportsInterface}.
     */
    function supportsInterface(
        bytes4 interfaceId
    )
        public
        view
        virtual
        override(ERC165Upgradeable, ERC2981Upgradeable, ERC721Upgradeable)
        returns (bool)
    {
        return
            interfaceId == type(ITokenCreator).interfaceId ||
            ERC165Upgradeable.supportsInterface(interfaceId) ||
            ERC2981Upgradeable.supportsInterface(interfaceId) ||
            ERC721Upgradeable.supportsInterface(interfaceId);
    }

    /////////////////////////////////////////////////////////////////////////////
    // Internal Functions
    /////////////////////////////////////////////////////////////////////////////
    /**
     * @dev Create a new token and assign it to the specified recipient.
     * @param _to The address of the token recipient.
     * @param _royaltyPercentage The royalty percentage for the token.
     * @param _royaltyReceiver The address of the royalty receiver for the token.
     * @return The ID of the newly created token.
     */
    function _createToken(
        address _to,
        uint256 _royaltyPercentage,
        address _royaltyReceiver
    ) internal returns (uint256) {
        tokenIdCounter.increment();
        uint256 tokenId = tokenIdCounter.current();
        require(tokenId <= maxTokens, "_createToken::exceeded maxTokens");
        _safeMint(_to, tokenId);
        _setRoyaltyPercentage(tokenId, _royaltyPercentage);
        _setRoyaltyReceiver(tokenId, _royaltyReceiver);
        return tokenId;
    }

    /**
     * @dev Prepare a minting batch with a specified base URI and number of tokens.
     * @param _baseURI The base URI for token metadata.
     * @param _numberOfTokens The number of tokens to prepare for minting.
     */
    function _prepareMint(
        string calldata _baseURI,
        uint256 _numberOfTokens
    ) internal {
        require(
            _numberOfTokens <= maxTokens,
            "_prepareMint::exceeded maxTokens"
        );
        require(
            tokenIdCounter.current() == 0,
            "_prepareMint::can only prepare mint with 0 tokens"
        );
        mintConfig = MintConfig(_numberOfTokens, _baseURI, false);
        emit PrepareMint(_numberOfTokens, _baseURI);
    }
}

// SPDX-License-Identifier: MIT
pragma solidity 0.8.15;

import {IRoyaltyGuard} from "../IRoyaltyGuard.sol";

/// @title IRoyaltyGuard
/// @author highland, koloz, van arman
/// @notice Interface for a deadman trigger extension to IRoyaltyGuard
interface IRoyaltyGuardDeadmanTrigger is IRoyaltyGuard {
  /*//////////////////////////////////////////////////////////////////////////
                            Events
  //////////////////////////////////////////////////////////////////////////*/

  /// @notice Emitted when deadman trigger datetime has been updated.
  event DeadmanTriggerDatetimeUpdated(address indexed _updater, uint256 _oldDatetime, uint256 _newDatetime);

  /// @notice Emitted when the deadman switch is activated.
  event DeadmanTriggerActivated(address indexed _activator);

  /*//////////////////////////////////////////////////////////////////////////
                          Custom Errors
  //////////////////////////////////////////////////////////////////////////*/

  /// @notice Emitted when the deadman trigger datetime threshold hasnt passed but tries to get called.
  error DeadmanTriggerStillActive();

  /*//////////////////////////////////////////////////////////////////////////
                          External Write Functions
  //////////////////////////////////////////////////////////////////////////*/

  /// @notice Sets the deadman list trigger for the specified number of years from current block timestamp
  /// @param _numYears to renew the trigger for.
  function setDeadmanListTriggerRenewalDuration(uint256 _numYears) external;

  /// @notice Triggers the deadman switch for the list
  function activateDeadmanListTrigger() external;

  /// @notice The datetime threshold after which the deadman trigger can be called by anyone.
  /// @return uint256 denoting unix epoch time after which the deadman trigger can be activated.
  function getDeadmanTriggerAvailableDatetime() external view returns (uint256);
}

// SPDX-License-Identifier: MIT
pragma solidity 0.8.15;

import {IRoyaltyGuard} from "./IRoyaltyGuard.sol";

import {EnumerableSet} from "openzeppelin-contracts/utils/structs/EnumerableSet.sol";
import {ERC165} from "openzeppelin-contracts/utils/introspection/ERC165.sol";

/// @title RoyaltyGuard
/// @author highland, koloz, van arman
/// @notice An abstract contract with the necessary functions, structures, modifiers to ensure royalties are paid.
/// @dev Inherriting this contract requires implementing {hasAdminPermission} and connecting the desired functions to the {checkList} modifier.
abstract contract RoyaltyGuard is IRoyaltyGuard, ERC165 {
  using EnumerableSet for EnumerableSet.AddressSet;

  /*//////////////////////////////////////////////////////////////////////////
                          Private Contract Storage
  //////////////////////////////////////////////////////////////////////////*/

  mapping(IRoyaltyGuard.ListType => EnumerableSet.AddressSet) private list;
  IRoyaltyGuard.ListType private listType;

  /*//////////////////////////////////////////////////////////////////////////
                                Modifiers
  //////////////////////////////////////////////////////////////////////////*/

  /// @notice Checks if an address is part the current, in-use list
  /// @dev depending on list type and if the address is on the list will throw {IRoyaltyGuard.Unauthorized}
  modifier checkList(address _addr) {
    if (listType == IRoyaltyGuard.ListType.ALLOW) {
      if (!list[IRoyaltyGuard.ListType.ALLOW].contains(_addr)) revert IRoyaltyGuard.Unauthorized();
    } else if (listType == IRoyaltyGuard.ListType.DENY) {
      if (list[IRoyaltyGuard.ListType.DENY].contains(_addr)) revert IRoyaltyGuard.Unauthorized();
    }
    _;
  }

  /// @notice Checks to see if the msg.sender has admin permissions.
  /// @dev {hasAdminPermissions} is an abstract function that the implementing contract will define.
  /// @dev if msg.sender doesnt have permission will throw {IRoyaltyGuard.MustBeAdmin}
  modifier onlyAdmin() {
    if (!hasAdminPermission(msg.sender)) revert IRoyaltyGuard.MustBeAdmin();
    _;
  }

  /*//////////////////////////////////////////////////////////////////////////
                            Admin Functions
  //////////////////////////////////////////////////////////////////////////*/

  /// @dev Only the contract owner can call this function.
  /// @inheritdoc IRoyaltyGuard
  function toggleListType(IRoyaltyGuard.ListType _newListType) external virtual onlyAdmin {
    _setListType(_newListType);
  }

  /// @dev Only the contract owner can call this function.
  /// @dev Cannot add to the OFF list
  /// @inheritdoc IRoyaltyGuard
  function batchAddAddressToRoyaltyList(IRoyaltyGuard.ListType _listType, address[] calldata _addrs) external virtual onlyAdmin {
    if (_listType == IRoyaltyGuard.ListType.OFF) revert IRoyaltyGuard.CantAddToOFFList();
    _batchUpdateList(_listType, _addrs, true);
  }

  /// @dev Only the contract owner can call this function.
  /// @inheritdoc IRoyaltyGuard
  function batchRemoveAddressToRoyaltyList(IRoyaltyGuard.ListType _listType, address[] calldata _addrs) external virtual onlyAdmin {
    _batchUpdateList(_listType, _addrs, false);
  }

  /// @dev Only the contract owner can call this function.
  /// @inheritdoc IRoyaltyGuard
  function clearList(IRoyaltyGuard.ListType _listType) external virtual onlyAdmin {
    delete list[_listType];
    emit ListCleared(msg.sender, _listType);
  }

  /*//////////////////////////////////////////////////////////////////////////
                          Public Read Functions
  //////////////////////////////////////////////////////////////////////////*/

  /// @inheritdoc IRoyaltyGuard
  function getList(IRoyaltyGuard.ListType _listType) external virtual view returns (address[] memory) {
    return list[_listType].values();
  }

  /// @inheritdoc IRoyaltyGuard
  function getInUseList() external virtual view returns (address[] memory) {
    return list[listType].values();
  }

  /// @inheritdoc IRoyaltyGuard
  function isOperatorInList(address _operator) external virtual view returns (bool) {
    return list[listType].contains(_operator);
  }

  /// @inheritdoc IRoyaltyGuard
  function getListType() external virtual view returns (IRoyaltyGuard.ListType) {
    return listType;
  }

  /// @dev used in the {onlyAdmin} modifier
  /// @inheritdoc IRoyaltyGuard
  function hasAdminPermission(address _addr) public virtual view returns (bool);

  /*//////////////////////////////////////////////////////////////////////////
                          ERC165 Overrides
  //////////////////////////////////////////////////////////////////////////*/

  /// @inheritdoc ERC165
  function supportsInterface(bytes4 _interfaceId) public virtual view override returns (bool) {
        return _interfaceId == type(IRoyaltyGuard).interfaceId || super.supportsInterface(_interfaceId);
    }

  /*//////////////////////////////////////////////////////////////////////////
                            Internal Functions
  //////////////////////////////////////////////////////////////////////////*/
  
  /// @dev Internal method to set list type. Main usage is constructor.
  function _setListType(IRoyaltyGuard.ListType _newListType) internal {
    emit ListTypeUpdated(msg.sender, listType, _newListType);
    listType = _newListType;
  }

  /// @dev Internal method to update a certain list. Main usage is constructor.
  function _batchUpdateList(IRoyaltyGuard.ListType _listType, address[] memory _addrs, bool _onList) internal {
    if (_listType != IRoyaltyGuard.ListType.OFF) {
      for (uint256 i = 0; i < _addrs.length; i++) {
        if (_onList) {
          list[_listType].add(_addrs[i]);
          emit AddressAddedToList(msg.sender, _addrs[i], _listType);
        } else {
          list[_listType].remove(_addrs[i]);
          emit AddressRemovedList(msg.sender, _addrs[i], _listType);
        }
      }
    }
  }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.6.0) (utils/structs/EnumerableSet.sol)

pragma solidity ^0.8.0;

/**
 * @dev Library for managing
 * https://en.wikipedia.org/wiki/Set_(abstract_data_type)[sets] of primitive
 * types.
 *
 * Sets have the following properties:
 *
 * - Elements are added, removed, and checked for existence in constant time
 * (O(1)).
 * - Elements are enumerated in O(n). No guarantees are made on the ordering.
 *
 * ```
 * contract Example {
 *     // Add the library methods
 *     using EnumerableSet for EnumerableSet.AddressSet;
 *
 *     // Declare a set state variable
 *     EnumerableSet.AddressSet private mySet;
 * }
 * ```
 *
 * As of v3.3.0, sets of type `bytes32` (`Bytes32Set`), `address` (`AddressSet`)
 * and `uint256` (`UintSet`) are supported.
 */
library EnumerableSet {
    // To implement this library for multiple types with as little code
    // repetition as possible, we write it in terms of a generic Set type with
    // bytes32 values.
    // The Set implementation uses private functions, and user-facing
    // implementations (such as AddressSet) are just wrappers around the
    // underlying Set.
    // This means that we can only create new EnumerableSets for types that fit
    // in bytes32.

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

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

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

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

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

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

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

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

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

            return true;
        } else {
            return false;
        }
    }

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

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

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

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

    // Bytes32Set

    struct Bytes32Set {
        Set _inner;
    }

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

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

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

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

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

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

    // AddressSet

    struct AddressSet {
        Set _inner;
    }

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

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

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

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

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

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

        assembly {
            result := store
        }

        return result;
    }

    // UintSet

    struct UintSet {
        Set _inner;
    }

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

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

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

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

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

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

        assembly {
            result := store
        }

        return result;
    }
}

// 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 v4.5.0) (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 = _owners[tokenId];
        require(owner != address(0), "ERC721: owner query for nonexistent token");
        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) {
        require(_exists(tokenId), "ERC721Metadata: URI query for nonexistent token");

        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 owner nor approved for all"
        );

        _approve(to, tokenId);
    }

    /**
     * @dev See {IERC721-getApproved}.
     */
    function getApproved(uint256 tokenId) public view virtual override returns (address) {
        require(_exists(tokenId), "ERC721: approved query for nonexistent token");

        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: transfer caller is not owner nor 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: transfer caller is not owner nor 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 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 _owners[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) {
        require(_exists(tokenId), "ERC721: operator query for nonexistent token");
        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);

        _balances[to] += 1;
        _owners[tokenId] = to;

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

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

    /**
     * @dev Destroys `tokenId`.
     * The approval is cleared when the token is burned.
     *
     * Requirements:
     *
     * - `tokenId` must exist.
     *
     * Emits a {Transfer} event.
     */
    function _burn(uint256 tokenId) internal virtual {
        address owner = ERC721Upgradeable.ownerOf(tokenId);

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

        // Clear approvals
        _approve(address(0), tokenId);

        _balances[owner] -= 1;
        delete _owners[tokenId];

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

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

    /**
     * @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);

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

        _balances[from] -= 1;
        _balances[to] += 1;
        _owners[tokenId] = to;

        emit Transfer(from, to, tokenId);

        _afterTokenTransfer(from, to, tokenId);
    }

    /**
     * @dev Approve `to` to operate on `tokenId`
     *
     * Emits a {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 a {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 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 {
                    assembly {
                        revert(add(32, reason), mload(reason))
                    }
                }
            }
        } else {
            return true;
        }
    }

    /**
     * @dev Hook that is called before any token transfer. This includes minting
     * and burning.
     *
     * Calling conditions:
     *
     * - When `from` and `to` are both non-zero, ``from``'s `tokenId` will be
     * transferred to `to`.
     * - When `from` is zero, `tokenId` will be minted for `to`.
     * - When `to` is zero, ``from``'s `tokenId` will be burned.
     * - `from` and `to` are never both zero.
     *
     * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
     */
    function _beforeTokenTransfer(
        address from,
        address to,
        uint256 tokenId
    ) internal virtual {}

    /**
     * @dev Hook that is called after any transfer of tokens. This includes
     * minting and burning.
     *
     * Calling conditions:
     *
     * - when `from` and `to` are both non-zero.
     * - `from` and `to` are never both zero.
     *
     * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
     */
    function _afterTokenTransfer(
        address from,
        address to,
        uint256 tokenId
    ) 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[44] private __gap;
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (token/ERC721/extensions/ERC721Burnable.sol)

pragma solidity ^0.8.0;

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

/**
 * @title ERC721 Burnable Token
 * @dev ERC721 Token that can be irreversibly burned (destroyed).
 */
abstract contract ERC721BurnableUpgradeable is Initializable, ContextUpgradeable, ERC721Upgradeable {
    function __ERC721Burnable_init() internal onlyInitializing {
    }

    function __ERC721Burnable_init_unchained() internal onlyInitializing {
    }
    /**
     * @dev Burns `tokenId`. See {ERC721-_burn}.
     *
     * Requirements:
     *
     * - The caller must own `tokenId` or be an approved operator.
     */
    function burn(uint256 tokenId) public virtual {
        //solhint-disable-next-line max-line-length
        require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721Burnable: caller is not owner nor approved");
        _burn(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[50] private __gap;
}

// 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 v4.4.1 (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 Returns the address of the current owner.
     */
    function owner() public view virtual returns (address) {
        return _owner;
    }

    /**
     * @dev Throws if called by any account other than the owner.
     */
    modifier onlyOwner() {
        require(owner() == _msgSender(), "Ownable: caller is not the owner");
        _;
    }

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

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

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

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

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

pragma solidity ^0.8.0;

/**
 * @title Counters
 * @author Matt Condon (@shrugs)
 * @dev Provides counters that can only be incremented, decremented or reset. This can be used e.g. to track the number
 * of elements in a mapping, issuing ERC721 ids, or counting request ids.
 *
 * Include with `using Counters for Counters.Counter;`
 */
library CountersUpgradeable {
    struct Counter {
        // This variable should never be directly accessed by users of the library: interactions must be restricted to
        // the library's function. As of Solidity v0.5.2, this cannot be enforced, though there is a proposal to add
        // this feature: see https://github.com/ethereum/solidity/issues/4637
        uint256 _value; // default: 0
    }

    function current(Counter storage counter) internal view returns (uint256) {
        return counter._value;
    }

    function increment(Counter storage counter) internal {
        unchecked {
            counter._value += 1;
        }
    }

    function decrement(Counter storage counter) internal {
        uint256 value = counter._value;
        require(value > 0, "Counter: decrement overflow");
        unchecked {
            counter._value = value - 1;
        }
    }

    function reset(Counter storage counter) internal {
        counter._value = 0;
    }
}

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

pragma solidity ^0.8.0;

// CAUTION
// This version of SafeMath should only be used with Solidity 0.8 or later,
// because it relies on the compiler's built in overflow checks.

/**
 * @dev Wrappers over Solidity's arithmetic operations.
 *
 * NOTE: `SafeMath` is generally not needed starting with Solidity 0.8, since the compiler
 * now has built in overflow checking.
 */
library SafeMathUpgradeable {
    /**
     * @dev Returns the addition of two unsigned integers, with an overflow flag.
     *
     * _Available since v3.4._
     */
    function tryAdd(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        unchecked {
            uint256 c = a + b;
            if (c < a) return (false, 0);
            return (true, c);
        }
    }

    /**
     * @dev Returns the subtraction of two unsigned integers, with an overflow flag.
     *
     * _Available since v3.4._
     */
    function trySub(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        unchecked {
            if (b > a) return (false, 0);
            return (true, a - b);
        }
    }

    /**
     * @dev Returns the multiplication of two unsigned integers, with an overflow flag.
     *
     * _Available since v3.4._
     */
    function tryMul(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        unchecked {
            // Gas optimization: this is cheaper than requiring 'a' not being zero, but the
            // benefit is lost if 'b' is also tested.
            // See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522
            if (a == 0) return (true, 0);
            uint256 c = a * b;
            if (c / a != b) return (false, 0);
            return (true, c);
        }
    }

    /**
     * @dev Returns the division of two unsigned integers, with a division by zero flag.
     *
     * _Available since v3.4._
     */
    function tryDiv(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        unchecked {
            if (b == 0) return (false, 0);
            return (true, a / b);
        }
    }

    /**
     * @dev Returns the remainder of dividing two unsigned integers, with a division by zero flag.
     *
     * _Available since v3.4._
     */
    function tryMod(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        unchecked {
            if (b == 0) return (false, 0);
            return (true, a % b);
        }
    }

    /**
     * @dev Returns the addition of two unsigned integers, reverting on
     * overflow.
     *
     * Counterpart to Solidity's `+` operator.
     *
     * Requirements:
     *
     * - Addition cannot overflow.
     */
    function add(uint256 a, uint256 b) internal pure returns (uint256) {
        return a + b;
    }

    /**
     * @dev Returns the subtraction of two unsigned integers, reverting on
     * overflow (when the result is negative).
     *
     * Counterpart to Solidity's `-` operator.
     *
     * Requirements:
     *
     * - Subtraction cannot overflow.
     */
    function sub(uint256 a, uint256 b) internal pure returns (uint256) {
        return a - b;
    }

    /**
     * @dev Returns the multiplication of two unsigned integers, reverting on
     * overflow.
     *
     * Counterpart to Solidity's `*` operator.
     *
     * Requirements:
     *
     * - Multiplication cannot overflow.
     */
    function mul(uint256 a, uint256 b) internal pure returns (uint256) {
        return a * b;
    }

    /**
     * @dev Returns the integer division of two unsigned integers, reverting on
     * division by zero. The result is rounded towards zero.
     *
     * Counterpart to Solidity's `/` operator.
     *
     * Requirements:
     *
     * - The divisor cannot be zero.
     */
    function div(uint256 a, uint256 b) internal pure returns (uint256) {
        return a / b;
    }

    /**
     * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
     * reverting when dividing by zero.
     *
     * Counterpart to Solidity's `%` operator. This function uses a `revert`
     * opcode (which leaves remaining gas untouched) while Solidity uses an
     * invalid opcode to revert (consuming all remaining gas).
     *
     * Requirements:
     *
     * - The divisor cannot be zero.
     */
    function mod(uint256 a, uint256 b) internal pure returns (uint256) {
        return a % b;
    }

    /**
     * @dev Returns the subtraction of two unsigned integers, reverting with custom message on
     * overflow (when the result is negative).
     *
     * CAUTION: This function is deprecated because it requires allocating memory for the error
     * message unnecessarily. For custom revert reasons use {trySub}.
     *
     * Counterpart to Solidity's `-` operator.
     *
     * Requirements:
     *
     * - Subtraction cannot overflow.
     */
    function sub(
        uint256 a,
        uint256 b,
        string memory errorMessage
    ) internal pure returns (uint256) {
        unchecked {
            require(b <= a, errorMessage);
            return a - b;
        }
    }

    /**
     * @dev Returns the integer division of two unsigned integers, reverting with custom message on
     * division by zero. The result is rounded towards zero.
     *
     * Counterpart to Solidity's `/` operator. Note: this function uses a
     * `revert` opcode (which leaves remaining gas untouched) while Solidity
     * uses an invalid opcode to revert (consuming all remaining gas).
     *
     * Requirements:
     *
     * - The divisor cannot be zero.
     */
    function div(
        uint256 a,
        uint256 b,
        string memory errorMessage
    ) internal pure returns (uint256) {
        unchecked {
            require(b > 0, errorMessage);
            return a / b;
        }
    }

    /**
     * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
     * reverting with custom message when dividing by zero.
     *
     * CAUTION: This function is deprecated because it requires allocating memory for the error
     * message unnecessarily. For custom revert reasons use {tryMod}.
     *
     * Counterpart to Solidity's `%` operator. This function uses a `revert`
     * opcode (which leaves remaining gas untouched) while Solidity uses an
     * invalid opcode to revert (consuming all remaining gas).
     *
     * Requirements:
     *
     * - The divisor cannot be zero.
     */
    function mod(
        uint256 a,
        uint256 b,
        string memory errorMessage
    ) internal pure returns (uint256) {
        unchecked {
            require(b > 0, errorMessage);
            return a % b;
        }
    }
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;

interface ITokenCreator {
    // bytes4(keccak256(tokenCreator(uint256))) == 0x40c1a064
    function tokenCreator(uint256 _tokenId)
        external
        view
        returns (address payable);
}

// contracts/royalty/ERC2981.sol
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.10;

import "openzeppelin-contracts-upgradeable/utils/introspection/ERC165Upgradeable.sol";
import "openzeppelin-contracts-upgradeable/utils/math/SafeMathUpgradeable.sol";
import "./IERC2981.sol";

abstract contract ERC2981Upgradeable is IERC2981, ERC165Upgradeable {
    using SafeMathUpgradeable for uint256;

    // bytes4(keccak256("royaltyInfo(uint256,uint256)")) == 0x2a55205a
    bytes4 private constant _INTERFACE_ID_ERC2981 = 0x2a55205a;

    address private defaultRoyaltyReceiver;

    uint256 private defaultRoyaltyPercentage;

    mapping(uint256 => address) royaltyReceivers;
    mapping(uint256 => uint256) royaltyPercentages;

    constructor() {}

    function __ERC2981__init() internal onlyInitializing {
        __ERC165_init();
    }

    function royaltyInfo(uint256 _tokenId, uint256 _salePrice)
        public
        view
        virtual
        override
        returns (address receiver, uint256 royaltyAmount)
    {
        receiver = royaltyReceivers[_tokenId] != address(0)
            ? royaltyReceivers[_tokenId]
            : defaultRoyaltyReceiver;
        royaltyAmount = _salePrice
            .mul(
                royaltyPercentages[_tokenId] != 0
                    ? royaltyPercentages[_tokenId]
                    : defaultRoyaltyPercentage
            )
            .div(100);
    }

    function _setDefaultRoyaltyReceiver(address _receiver) internal {
        defaultRoyaltyReceiver = _receiver;
    }

    function _setRoyaltyReceiver(uint256 _tokenId, address _newReceiver)
        internal
    {
        royaltyReceivers[_tokenId] = _newReceiver;
    }

    function _setRoyaltyPercentage(uint256 _tokenId, uint256 _percentage)
        internal
    {
        royaltyPercentages[_tokenId] = _percentage;
    }

    function supportsInterface(bytes4 interfaceId)
        public
        view
        virtual
        override
        returns (bool)
    {
        return
            interfaceId == type(IERC2981).interfaceId ||
            super.supportsInterface(interfaceId);
    }

    function _setDefaultRoyaltyPercentage(uint256 _percentage) internal {
        defaultRoyaltyPercentage = _percentage;
    }

    function getDefaultRoyaltyReceiver() public view returns (address) {
        return defaultRoyaltyReceiver;
    }

    function getDefaultRoyaltyPercentage() public view returns (uint256) {
        return defaultRoyaltyPercentage;
    }
}

// SPDX-License-Identifier: MIT
pragma solidity 0.8.15;

/// @title IRoyaltyGuard
/// @author highland, koloz, van arman
/// @notice Interface for the royalty guard with all the fields, errors, functions, etc.
interface IRoyaltyGuard {

  /*//////////////////////////////////////////////////////////////////////////
                              Enums
  //////////////////////////////////////////////////////////////////////////*/

    /// @notice An enum denoting 3 types for a list: OFF (0), ALLOW (1), DENY (2)
    enum ListType {
      OFF,
      ALLOW,
      DENY
    }

  /*//////////////////////////////////////////////////////////////////////////
                            Events
  //////////////////////////////////////////////////////////////////////////*/

  /// @notice Emitted when the list type is updated.
  event ListTypeUpdated(address indexed _updater, ListType indexed _oldListType, ListType indexed _newListType);

  /// @notice Emitted when an address is added to a list.
  event AddressAddedToList(address indexed _updater, address indexed _addedAddr, ListType indexed _ListType);

  /// @notice Emitted when an address is removed from a list.
  event AddressRemovedList(address indexed _updater, address indexed _removedAddr, ListType indexed _ListType);

  /// @notice Emitted when a list is cleared.
  event ListCleared(address indexed _updater, ListType _listType);

  /*//////////////////////////////////////////////////////////////////////////
                          Custom Errors
  //////////////////////////////////////////////////////////////////////////*/

  /// @notice Emitted when an unauthorized party tries to call a specific function.
  error Unauthorized();

  /// @notice Emitted when trying to add an address to a list with type OFF.
  error CantAddToOFFList();

  /// @notice Emitted when an admin only function tries to be called by a non-admin.
  error MustBeAdmin();

  /*//////////////////////////////////////////////////////////////////////////
                          External Write Functions
  //////////////////////////////////////////////////////////////////////////*/

  /// @notice Toggles the list type between ALLOW, DENY, or OFF
  /// @param _newListType to be applied to the list. Options are 0 (OFF), 1 (ALLOW), 2 (DENY)
  function toggleListType(IRoyaltyGuard.ListType _newListType) external;

  /// @notice Adds a list of addresses to the specified list.
  /// @param _listType that addresses are being added to
  /// @param _addrs being added to the designated list
  function batchAddAddressToRoyaltyList(IRoyaltyGuard.ListType _listType, address[] calldata _addrs) external;

  /// @notice Removes a list of addresses to the specified list.
  /// @param _listType that addresses are being removed from
  /// @param _addrs being removed from the designated list
  function batchRemoveAddressToRoyaltyList(IRoyaltyGuard.ListType _listType, address[] calldata _addrs) external;

  /// @notice Clears an entire list.
  /// @param _listType of list being cleared.
  function clearList(IRoyaltyGuard.ListType _listType) external;

  /*//////////////////////////////////////////////////////////////////////////
                          External Read Functions
  //////////////////////////////////////////////////////////////////////////*/

  /// @notice Returns the set of addresses on a list.
  /// @param _listType of list being retrieved.
  /// @return list of addresses on a given list.
  function getList(IRoyaltyGuard.ListType _listType) external view returns (address[] memory);

  /// @notice Returns the set of addresses on a list.
  /// @return list of addresses on a given list.
  function getInUseList() external view returns (address[] memory);

  /// @notice Returns if the supplied operator address in part of the current in use list.
  /// @param _operator address being checked.
  /// @return bool relating to if the operator is on the list.
  function isOperatorInList(address _operator) external view returns (bool);
  

  /// @notice States whether or not an address has admin permission.
  /// @return bool denoting if _addr has admin permission.
  function hasAdminPermission(address _addr) external view returns (bool);

  /// @notice Returns the ListType currently being used;
  /// @return ListType of the list. Values are: 0 (OFF), 1 (ALLOW), 2 (DENY)
  function getListType() external view returns (ListType);
}

// 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 v4.4.1 (token/ERC721/IERC721.sol)

pragma solidity ^0.8.0;

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

/**
 * @dev Required interface of an ERC721 compliant contract.
 */
interface IERC721Upgradeable is IERC165Upgradeable {
    /**
     * @dev Emitted when `tokenId` token is transferred from `from` to `to`.
     */
    event Transfer(address indexed from, address indexed to, uint256 indexed tokenId);

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

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

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

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

    /**
     * @dev Safely transfers `tokenId` token from `from` to `to`.
     *
     * 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 be have been allowed to move this token by either {approve} or {setApprovalForAll}.
     * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
     *
     * Emits a {Transfer} event.
     */
    function safeTransferFrom(
        address from,
        address to,
        uint256 tokenId
    ) external;

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

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

    /**
     * @dev 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/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 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 v4.5.0) (utils/Address.sol)

pragma solidity ^0.8.1;

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

        return account.code.length > 0;
    }

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

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

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

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

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

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

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

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

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

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

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

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

// 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 v4.4.1 (utils/Strings.sol)

pragma solidity ^0.8.0;

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

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

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

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

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

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

pragma solidity ^0.8.0;

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

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

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

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

    /**
     * @dev A modifier that defines a protected initializer function that can be invoked at most once. In its scope,
     * `onlyInitializing` functions can be used to initialize parent contracts. Equivalent to `reinitializer(1)`.
     */
    modifier initializer() {
        bool isTopLevelCall = _setInitializedVersion(1);
        if (isTopLevelCall) {
            _initializing = true;
        }
        _;
        if (isTopLevelCall) {
            _initializing = false;
            emit Initialized(1);
        }
    }

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

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

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

    function _setInitializedVersion(uint8 version) private returns (bool) {
        // If the contract is initializing we ignore whether _initialized is set in order to support multiple
        // inheritance patterns, but we only do this in the context of a constructor, and for the lowest level
        // of initializers, because in other contexts the contract may have been reentered.
        if (_initializing) {
            require(
                version == 1 && !AddressUpgradeable.isContract(address(this)),
                "Initializable: contract is already initialized"
            );
            return false;
        } else {
            require(_initialized < version, "Initializable: contract is already initialized");
            _initialized = version;
            return true;
        }
    }
}

// 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);
}

// contracts/royalty/IERC2981.sol
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;

/// @dev Interface for the NFT Royalty Standard
interface IERC2981 {
    /// ERC165 bytes to add to interface array - set in parent contract
    /// implementing this standard
    ///
    /// bytes4(keccak256("royaltyInfo(uint256,uint256)")) == 0x2a55205a
    /// bytes4 private constant _INTERFACE_ID_ERC2981 = 0x2a55205a;
    /// _registerInterface(_INTERFACE_ID_ERC2981);

    /// @notice Called with the sale price to determine how much royalty
    //          is owed and to whom.
    /// @param _tokenId - the NFT asset queried for royalty information
    /// @param _salePrice - the sale price of the NFT asset specified by _tokenId
    /// @return receiver - address of who should be sent the royalty payment
    /// @return royaltyAmount - the royalty payment amount for _salePrice
    function royaltyInfo(uint256 _tokenId, uint256 _salePrice)
        external
        view
        returns (address receiver, uint256 royaltyAmount);
}

{
  "remappings": [
    "openzeppelin-contracts-upgradeable/=lib/openzeppelin-contracts-upgradeable/contracts/",
    "openzeppelin-contracts/=lib/openzeppelin-contracts/contracts/",
    "rareprotocol/aux/=lib/aux/src/",
    "royalty-guard/=lib/royalty-guard/src/royalty-guard/",
    "forge-std/=lib/forge-std/src/",
    "aux/=lib/aux/",
    "ds-test/=lib/ds-test/src/",
    "erc4626-tests/=lib/aux/lib/openzeppelin-contracts-upgradeable/lib/erc4626-tests/",
    "openzeppelin/=lib/aux/lib/openzeppelin-contracts-upgradeable/contracts/",
    "solmate/=lib/royalty-guard/lib/solmate/src/"
  ],
  "optimizer": {
    "enabled": true,
    "runs": 200
  },
  "metadata": {
    "useLiteralContent": false,
    "bytecodeHash": "ipfs"
  },
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "devdoc",
        "userdoc",
        "metadata",
        "abi"
      ]
    }
  },
  "evmVersion": "london",
  "libraries": {}
}

• No Contract Security Audit Submitted- Submit Audit Here

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tateMutability":"view","type":"function"},{"inputs":[],"name":"symbol","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"enum 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