// File: contracts/BannersOracle.sol



//SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;

import "@openzeppelin/contracts/token/ERC721/ERC721.sol";
import "@openzeppelin/contracts/token/ERC721/extensions/ERC721Enumerable.sol";
import "@openzeppelin/contracts/token/ERC721/extensions/ERC721Burnable.sol";
import "@openzeppelin/contracts/token/ERC721/extensions/ERC721URIStorage.sol";
import "@openzeppelin/contracts/access/AccessControlEnumerable.sol";
import "@openzeppelin/contracts/utils/Context.sol";
import "@openzeppelin/contracts/utils/Counters.sol";


contract BannersOracle is Context,  AccessControlEnumerable, ERC721Enumerable, ERC721URIStorage{
  using Counters for Counters.Counter;
  Counters.Counter public _tokenIdTracker;

  string private _baseTokenURI;
  /// @notice Mint price
  uint private _price;
  /// @notice Max number of token mintable
  uint private _max;
  address _wallet;

  bool _openMint;
  bool _openWhitelistMint;

  mapping(address => uint) private whitelist;

  constructor(string memory name, string memory symbol, string memory baseTokenURI, uint mintPrice, uint max, address wallet, address admin) ERC721(name, symbol) {
      _baseTokenURI = baseTokenURI;
      _price = mintPrice;
      _max = max;
      _wallet = wallet;
      _openMint = false;
      _openWhitelistMint = false;
      _setupRole(DEFAULT_ADMIN_ROLE, wallet);
      _setupRole(DEFAULT_ADMIN_ROLE, admin);
  }

  function _baseURI() internal view virtual override returns (string memory) {
      return _baseTokenURI;
  }

  function setBaseURI(string memory baseURI) external {
    require(hasRole(DEFAULT_ADMIN_ROLE, _msgSender()), "BannersOracle: must have admin role to change base URI");
    _baseTokenURI = baseURI;
  }

  function setTokenURI(uint256 tokenId, string memory _tokenURI) external {
    require(hasRole(DEFAULT_ADMIN_ROLE, _msgSender()), "BannersOracle: must have admin role to change token URI");
    _setTokenURI(tokenId, _tokenURI);
  }

  /**
    @notice Method for updating minting fee
    @dev Only admin
    @param mintPrice uint the minting fee to set
    */
  function setPrice(uint mintPrice) external {
    require(hasRole(DEFAULT_ADMIN_ROLE, _msgSender()), "BannersOracle: must have admin role to change price");
    _price = mintPrice;
  }

  function setMax(uint max) external {
    require(hasRole(DEFAULT_ADMIN_ROLE, _msgSender()), "BannersOracle: must have admin role to change the max quantity");
    _max = max;
  }

  function setMint(bool openMint, bool openWhitelistMint) external {
    require(hasRole(DEFAULT_ADMIN_ROLE, _msgSender()), "BannersOracle: must have admin role to open/close mint");
    _openMint = openMint;
    _openWhitelistMint = openWhitelistMint;
  }

  function getPrice() public view returns (uint) {
    return _price;
  }

  function getMax() public view returns (uint) {
    return _max;
  }

  function mint(uint amount) public payable {
    require(amount <= 10, "BannersOracle: max of 10 Oracle Witches per mint");
    require(_openMint == true, "BannersOracle: minting is closed");
    require(msg.value == _price*amount, "BannersOracle: must send correct price");
    require(_tokenIdTracker.current() + amount <= _max, "BannersOracle: not enough Banners left to be minted");
    for(uint i = 0; i < amount; i++) {
      _mint(msg.sender, _tokenIdTracker.current());
      _tokenIdTracker.increment();
    }
    payable(_wallet).transfer(msg.value);
  }

  // function mintWhitelist() public payable {
  //   require(_openWhitelistMint == true, "BannersOracle: minting is closed");
  //   require(whitelist[msg.sender] > 0, "BannersOracle: user must be whitelisted to mint");
  //   require(msg.value == _presaleprice, "BannersOracle: must send correct price");
  //   require(_tokenIdTracker.current() < _max, "BannersOracle: all Oracle Witches have been minted");
    
  //   whitelist[msg.sender] = whitelist[msg.sender] - 1;
  //   _mint(msg.sender, _tokenIdTracker.current());
  //   _tokenIdTracker.increment();
  //   payable(_wallet).transfer(msg.value);
  // }

  function mintWhitelist(uint amount) public {
    require(_openWhitelistMint == true, "BannersOracle: minting is closed");
    require(whitelist[msg.sender] > 0, "BannersOracle: user must be whitelisted to mint");
    require(amount <= whitelist[msg.sender], "BannersOracle: user must have enough whitelist spots left to mint");
    require(_tokenIdTracker.current() + amount <= _max, "BannersOracle: not enough Banners left to be minted");

    for(uint i = 0; i < amount; i++) {
      _mint(msg.sender, _tokenIdTracker.current());
      whitelist[msg.sender] = whitelist[msg.sender] - 1;
      _tokenIdTracker.increment();
    }
  }

  function whitelistUser(address user, uint nbspot) public {
    require(hasRole(DEFAULT_ADMIN_ROLE, _msgSender()), "BannersOracle: must have admin role to whitelist address");
    whitelist[user] = nbspot;
  }

  function whitelistStatus(address user) public view returns(uint) {
    // if (whitelist[user] > 0) {
    //   return whitelist[user];
    // }
    // else {
    //   return 0;
    // }
    return whitelist[user];
  }

  function burn(uint256 tokenId) public{
    require(_isApprovedOrOwner(msg.sender, tokenId), "BannersOracle: must own the token to burn it");
    _burn(tokenId);
  }

  function _burn(uint256 tokenId) internal virtual override(ERC721, ERC721URIStorage) {
    return ERC721URIStorage._burn(tokenId);
  }

  function tokenURI(uint256 tokenId) public view override(ERC721, ERC721URIStorage) returns (string memory) {
    return ERC721URIStorage.tokenURI(tokenId);
  }
  
  function _beforeTokenTransfer(address from, address to, uint256 tokenId) internal virtual override(ERC721, ERC721Enumerable) {
    super._beforeTokenTransfer(from, to, tokenId);
  }

  function supportsInterface(bytes4 interfaceId) public view virtual override(AccessControlEnumerable, ERC721, ERC721Enumerable) returns (bool) {
    return super.supportsInterface(interfaceId);
  }
}
// File: @openzeppelin/contracts/token/ERC721/ERC721.sol



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

pragma solidity ^0.8.0;

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

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

    // Token name
    string private _name;

    // Token symbol
    string private _symbol;

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

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

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

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

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

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

    /**
     * @dev See {IERC721-balanceOf}.
     */
    function balanceOf(address owner) public view virtual override returns (uint256) {
        require(owner != address(0), "ERC721: balance query for the zero address");
        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 overriden in child contracts.
     */
    function _baseURI() internal view virtual returns (string memory) {
        return "";
    }

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

        require(
            _msgSender() == owner || isApprovedForAll(owner, _msgSender()),
            "ERC721: approve caller is not 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 = ERC721.ownerOf(tokenId);
        return (spender == owner || getApproved(tokenId) == spender || isApprovedForAll(owner, 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);
    }

    /**
     * @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 = ERC721.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);
    }

    /**
     * @dev Transfers `tokenId` from `from` to `to`.
     *  As opposed to {transferFrom}, this imposes no restrictions on msg.sender.
     *
     * Requirements:
     *
     * - `to` cannot be the zero address.
     * - `tokenId` token must be owned by `from`.
     *
     * Emits a {Transfer} event.
     */
    function _transfer(
        address from,
        address to,
        uint256 tokenId
    ) internal virtual {
        require(ERC721.ownerOf(tokenId) == from, "ERC721: transfer of token that is not own");
        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);
    }

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

    /**
     * @dev Approve `operator` to operate on all of `owner` tokens
     *
     * Emits 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 IERC721Receiver(to).onERC721Received(_msgSender(), from, tokenId, _data) returns (bytes4 retval) {
                return retval == IERC721Receiver.onERC721Received.selector;
            } catch (bytes memory reason) {
                if (reason.length == 0) {
                    revert("ERC721: transfer to non ERC721Receiver implementer");
                } else {
                    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 {}
}

// File: @openzeppelin/contracts/token/ERC721/extensions/ERC721Enumerable.sol



// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (token/ERC721/extensions/ERC721Enumerable.sol)

pragma solidity ^0.8.0;

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

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

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

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

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

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

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

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

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

    /**
     * @dev 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` cannot be the zero address.
     * - `to` cannot be the zero address.
     *
     * 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 override {
        super._beforeTokenTransfer(from, to, tokenId);

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

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

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

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

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

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

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

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

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

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

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

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

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

// File: @openzeppelin/contracts/token/ERC721/extensions/ERC721Burnable.sol



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

pragma solidity ^0.8.0;

import "../ERC721.sol";
import "../../../utils/Context.sol";

/**
 * @title ERC721 Burnable Token
 * @dev ERC721 Token that can be irreversibly burned (destroyed).
 */
abstract contract ERC721Burnable is Context, ERC721 {
    /**
     * @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);
    }
}

// File: @openzeppelin/contracts/token/ERC721/extensions/ERC721URIStorage.sol



// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (token/ERC721/extensions/ERC721URIStorage.sol)

pragma solidity ^0.8.0;

import "../ERC721.sol";

/**
 * @dev ERC721 token with storage based token URI management.
 */
abstract contract ERC721URIStorage is ERC721 {
    using Strings for uint256;

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

    /**
     * @dev See {IERC721Metadata-tokenURI}.
     */
    function tokenURI(uint256 tokenId) public view virtual override returns (string memory) {
        require(_exists(tokenId), "ERC721URIStorage: URI query for nonexistent token");

        string memory _tokenURI = _tokenURIs[tokenId];
        string memory base = _baseURI();

        // If there is no base URI, return the token URI.
        if (bytes(base).length == 0) {
            return _tokenURI;
        }
        // If both are set, concatenate the baseURI and tokenURI (via abi.encodePacked).
        if (bytes(_tokenURI).length > 0) {
            return string(abi.encodePacked(base, _tokenURI));
        }

        return super.tokenURI(tokenId);
    }

    /**
     * @dev Sets `_tokenURI` as the tokenURI of `tokenId`.
     *
     * Requirements:
     *
     * - `tokenId` must exist.
     */
    function _setTokenURI(uint256 tokenId, string memory _tokenURI) internal virtual {
        require(_exists(tokenId), "ERC721URIStorage: URI set of nonexistent token");
        _tokenURIs[tokenId] = _tokenURI;
    }

    /**
     * @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 override {
        super._burn(tokenId);

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

// File: @openzeppelin/contracts/access/AccessControlEnumerable.sol



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

pragma solidity ^0.8.0;

import "./IAccessControlEnumerable.sol";
import "./AccessControl.sol";
import "../utils/structs/EnumerableSet.sol";

/**
 * @dev Extension of {AccessControl} that allows enumerating the members of each role.
 */
abstract contract AccessControlEnumerable is IAccessControlEnumerable, AccessControl {
    using EnumerableSet for EnumerableSet.AddressSet;

    mapping(bytes32 => EnumerableSet.AddressSet) private _roleMembers;

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

    /**
     * @dev Returns one of the accounts that have `role`. `index` must be a
     * value between 0 and {getRoleMemberCount}, non-inclusive.
     *
     * Role bearers are not sorted in any particular way, and their ordering may
     * change at any point.
     *
     * WARNING: When using {getRoleMember} and {getRoleMemberCount}, make sure
     * you perform all queries on the same block. See the following
     * https://forum.openzeppelin.com/t/iterating-over-elements-on-enumerableset-in-openzeppelin-contracts/2296[forum post]
     * for more information.
     */
    function getRoleMember(bytes32 role, uint256 index) public view override returns (address) {
        return _roleMembers[role].at(index);
    }

    /**
     * @dev Returns the number of accounts that have `role`. Can be used
     * together with {getRoleMember} to enumerate all bearers of a role.
     */
    function getRoleMemberCount(bytes32 role) public view override returns (uint256) {
        return _roleMembers[role].length();
    }

    /**
     * @dev Overload {_grantRole} to track enumerable memberships
     */
    function _grantRole(bytes32 role, address account) internal virtual override {
        super._grantRole(role, account);
        _roleMembers[role].add(account);
    }

    /**
     * @dev Overload {_revokeRole} to track enumerable memberships
     */
    function _revokeRole(bytes32 role, address account) internal virtual override {
        super._revokeRole(role, account);
        _roleMembers[role].remove(account);
    }
}

// File: @openzeppelin/contracts/utils/Context.sol



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

pragma solidity ^0.8.0;

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

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

// File: @openzeppelin/contracts/utils/Counters.sol



// 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 Counters {
    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;
    }
}

// File: @openzeppelin/contracts/token/ERC721/IERC721.sol



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

pragma solidity ^0.8.0;

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

/**
 * @dev Required interface of an ERC721 compliant contract.
 */
interface IERC721 is IERC165 {
    /**
     * @dev Emitted when `tokenId` token is transferred from `from` to `to`.
     */
    event Transfer(address indexed from, address indexed to, uint256 indexed tokenId);

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

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

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

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

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

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

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

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

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

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

    /**
     * @dev Safely transfers `tokenId` token from `from` to `to`.
     *
     * Requirements:
     *
     * - `from` cannot be the zero address.
     * - `to` cannot be the zero address.
     * - `tokenId` token must exist and be owned by `from`.
     * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.
     * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
     *
     * Emits a {Transfer} event.
     */
    function safeTransferFrom(
        address from,
        address to,
        uint256 tokenId,
        bytes calldata data
    ) external;
}

// File: @openzeppelin/contracts/token/ERC721/IERC721Receiver.sol



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

pragma solidity ^0.8.0;

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

// File: @openzeppelin/contracts/token/ERC721/extensions/IERC721Metadata.sol



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

pragma solidity ^0.8.0;

import "../IERC721.sol";

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

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

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

// File: @openzeppelin/contracts/utils/Address.sol



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

pragma solidity ^0.8.0;

/**
 * @dev Collection of functions related to the address type
 */
library Address {
    /**
     * @dev Returns true if `account` is a contract.
     *
     * [IMPORTANT]
     * ====
     * It is unsafe to assume that an address for which this function returns
     * false is an externally-owned account (EOA) and not a contract.
     *
     * Among others, `isContract` will return false for the following
     * types of addresses:
     *
     *  - an externally-owned account
     *  - a contract in construction
     *  - an address where a contract will be created
     *  - an address where a contract lived, but was destroyed
     * ====
     */
    function isContract(address account) internal view returns (bool) {
        // This method relies on extcodesize, which returns 0 for contracts in
        // construction, since the code is only stored at the end of the
        // constructor execution.

        uint256 size;
        assembly {
            size := extcodesize(account)
        }
        return size > 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 Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but performing a delegate call.
     *
     * _Available since v3.4._
     */
    function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) {
        return functionDelegateCall(target, data, "Address: low-level delegate call failed");
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
     * but performing a delegate call.
     *
     * _Available since v3.4._
     */
    function functionDelegateCall(
        address target,
        bytes memory data,
        string memory errorMessage
    ) internal returns (bytes memory) {
        require(isContract(target), "Address: delegate call to non-contract");

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

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

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

// File: @openzeppelin/contracts/utils/Strings.sol



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

pragma solidity ^0.8.0;

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

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

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

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

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

// File: @openzeppelin/contracts/utils/introspection/ERC165.sol



// 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;
    }
}

// File: @openzeppelin/contracts/utils/introspection/IERC165.sol



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

pragma solidity ^0.8.0;

/**
 * @dev Interface of the ERC165 standard, as defined in the
 * https://eips.ethereum.org/EIPS/eip-165[EIP].
 *
 * Implementers can declare support of contract interfaces, which can then be
 * queried by others ({ERC165Checker}).
 *
 * For an implementation, see {ERC165}.
 */
interface 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);
}

// File: @openzeppelin/contracts/token/ERC721/extensions/IERC721Enumerable.sol



// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (token/ERC721/extensions/IERC721Enumerable.sol)

pragma solidity ^0.8.0;

import "../IERC721.sol";

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

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

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

// File: @openzeppelin/contracts/access/IAccessControlEnumerable.sol



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

pragma solidity ^0.8.0;

import "./IAccessControl.sol";

/**
 * @dev External interface of AccessControlEnumerable declared to support ERC165 detection.
 */
interface IAccessControlEnumerable is IAccessControl {
    /**
     * @dev Returns one of the accounts that have `role`. `index` must be a
     * value between 0 and {getRoleMemberCount}, non-inclusive.
     *
     * Role bearers are not sorted in any particular way, and their ordering may
     * change at any point.
     *
     * WARNING: When using {getRoleMember} and {getRoleMemberCount}, make sure
     * you perform all queries on the same block. See the following
     * https://forum.openzeppelin.com/t/iterating-over-elements-on-enumerableset-in-openzeppelin-contracts/2296[forum post]
     * for more information.
     */
    function getRoleMember(bytes32 role, uint256 index) external view returns (address);

    /**
     * @dev Returns the number of accounts that have `role`. Can be used
     * together with {getRoleMember} to enumerate all bearers of a role.
     */
    function getRoleMemberCount(bytes32 role) external view returns (uint256);
}

// File: @openzeppelin/contracts/access/AccessControl.sol



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

pragma solidity ^0.8.0;

import "./IAccessControl.sol";
import "../utils/Context.sol";
import "../utils/Strings.sol";
import "../utils/introspection/ERC165.sol";

/**
 * @dev Contract module that allows children to implement role-based access
 * control mechanisms. This is a lightweight version that doesn't allow enumerating role
 * members except through off-chain means by accessing the contract event logs. Some
 * applications may benefit from on-chain enumerability, for those cases see
 * {AccessControlEnumerable}.
 *
 * Roles are referred to by their `bytes32` identifier. These should be exposed
 * in the external API and be unique. The best way to achieve this is by
 * using `public constant` hash digests:
 *
 * ```
 * bytes32 public constant MY_ROLE = keccak256("MY_ROLE");
 * ```
 *
 * Roles can be used to represent a set of permissions. To restrict access to a
 * function call, use {hasRole}:
 *
 * ```
 * function foo() public {
 *     require(hasRole(MY_ROLE, msg.sender));
 *     ...
 * }
 * ```
 *
 * Roles can be granted and revoked dynamically via the {grantRole} and
 * {revokeRole} functions. Each role has an associated admin role, and only
 * accounts that have a role's admin role can call {grantRole} and {revokeRole}.
 *
 * By default, the admin role for all roles is `DEFAULT_ADMIN_ROLE`, which means
 * that only accounts with this role will be able to grant or revoke other
 * roles. More complex role relationships can be created by using
 * {_setRoleAdmin}.
 *
 * WARNING: The `DEFAULT_ADMIN_ROLE` is also its own admin: it has permission to
 * grant and revoke this role. Extra precautions should be taken to secure
 * accounts that have been granted it.
 */
abstract contract AccessControl is Context, IAccessControl, ERC165 {
    struct RoleData {
        mapping(address => bool) members;
        bytes32 adminRole;
    }

    mapping(bytes32 => RoleData) private _roles;

    bytes32 public constant DEFAULT_ADMIN_ROLE = 0x00;

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

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

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

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

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

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

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

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

        _revokeRole(role, account);
    }

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

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

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

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

// File: @openzeppelin/contracts/utils/structs/EnumerableSet.sol



// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (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;
    }
}

// File: @openzeppelin/contracts/access/IAccessControl.sol



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

pragma solidity ^0.8.0;

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

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

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

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

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

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

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

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

// File: contracts/WitchesOracleRituals.sol



//SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;

import "@openzeppelin/contracts/token/ERC721/ERC721.sol";
import "@openzeppelin/contracts/token/ERC721/extensions/ERC721Enumerable.sol";
import "@openzeppelin/contracts/token/ERC721/extensions/ERC721Burnable.sol";
import "@openzeppelin/contracts/token/ERC721/extensions/ERC721URIStorage.sol";
import "@openzeppelin/contracts/access/AccessControlEnumerable.sol";
import "@openzeppelin/contracts/utils/Context.sol";
import "@openzeppelin/contracts/utils/Counters.sol";


contract WitchesOracleRituals is Context,  AccessControlEnumerable, ERC721Enumerable, ERC721URIStorage{
  using Counters for Counters.Counter;
  Counters.Counter public _tokenIdTracker;

  string private _baseTokenURI;
  /// @notice Mint price
  uint private _price;
  /// @notice Max number of token mintable
  uint private _max;
  address _wallet;

  bool _openMint;
  bool _openWhitelistMint;

  mapping(address => uint) private whitelist;

  constructor(string memory name, string memory symbol, string memory baseTokenURI, uint mintPrice, uint max, address wallet, address admin) ERC721(name, symbol) {
      _baseTokenURI = baseTokenURI;
      _price = mintPrice;
      _max = max;
      _wallet = wallet;
      _openMint = false;
      _openWhitelistMint = false;
      _setupRole(DEFAULT_ADMIN_ROLE, wallet);
      _setupRole(DEFAULT_ADMIN_ROLE, admin);
  }

  function _baseURI() internal view virtual override returns (string memory) {
      return _baseTokenURI;
  }

  function setBaseURI(string memory baseURI) external {
    require(hasRole(DEFAULT_ADMIN_ROLE, _msgSender()), "Must have admin role to change base URI");
    _baseTokenURI = baseURI;
  }

  function setTokenURI(uint256 tokenId, string memory _tokenURI) external {
    require(hasRole(DEFAULT_ADMIN_ROLE, _msgSender()), "Must have admin role to change token URI");
    _setTokenURI(tokenId, _tokenURI);
  }

  /**
    @notice Method for updating minting fee
    @dev Only admin
    @param mintPrice uint the minting fee to set
    */
  function setPrice(uint mintPrice) external {
    require(hasRole(DEFAULT_ADMIN_ROLE, _msgSender()), "Must have admin role to change price");
    _price = mintPrice;
  }

  function setMax(uint max) external {
    require(hasRole(DEFAULT_ADMIN_ROLE, _msgSender()), "Must have admin role to change the max quantity");
    _max = max;
  }

  function setMint(bool openMint, bool openWhitelistMint) external {
    require(hasRole(DEFAULT_ADMIN_ROLE, _msgSender()), "Must have admin role to open/close mint");
    _openMint = openMint;
    _openWhitelistMint = openWhitelistMint;
  }

  function getPrice() public view returns (uint) {
    return _price;
  }

  function getMax() public view returns (uint) {
    return _max;
  }

  function mint(uint amount) public payable {
    require(amount <= 10, "Max of 10 Oracle Witches per mint");
    require(_openMint == true, "Minting is closed");
    require(msg.value == _price*amount, "Must send correct price");
    require(_tokenIdTracker.current() + amount <= _max, "BannersOracle: not enough Banners left to be minted");
    for(uint i = 0; i < amount; i++) {
      _mint(msg.sender, _tokenIdTracker.current());
      _tokenIdTracker.increment();
    }
    payable(_wallet).transfer(msg.value);
  }

  // function mintWhitelist() public payable {
  //   require(_openWhitelistMint == true, "Minting is closed");
  //   require(whitelist[msg.sender] > 0, "BannersOracle: user must be whitelisted to mint");
  //   require(msg.value == _presaleprice, "Must send correct price");
  //   require(_tokenIdTracker.current() < _max, "BannersOracle: all Oracle Witches have been minted");
    
  //   whitelist[msg.sender] = whitelist[msg.sender] - 1;
  //   _mint(msg.sender, _tokenIdTracker.current());
  //   _tokenIdTracker.increment();
  //   payable(_wallet).transfer(msg.value);
  // }

  function mintWhitelist(uint amount) public {
    require(_openWhitelistMint == true, "Minting is closed");
    require(whitelist[msg.sender] > 0, "BannersOracle: user must be whitelisted to mint");
    require(amount <= whitelist[msg.sender], "BannersOracle: user must have enough whitelist spots left to mint");
    require(_tokenIdTracker.current() + amount <= _max, "BannersOracle: not enough Banners left to be minted");

    for(uint i = 0; i < amount; i++) {
      _mint(msg.sender, _tokenIdTracker.current());
      whitelist[msg.sender] = whitelist[msg.sender] - 1;
      _tokenIdTracker.increment();
    }
  }

  function whitelistUser(address user, uint nbspot) public {
    require(hasRole(DEFAULT_ADMIN_ROLE, _msgSender()), "Must have admin role to whitelist address");
    whitelist[user] = nbspot;
  }

  function whitelistStatus(address user) public view returns(uint) {
    // if (whitelist[user] > 0) {
    //   return whitelist[user];
    // }
    // else {
    //   return 0;
    // }
    return whitelist[user];
  }

  function burn(uint256 tokenId) public{
    require(_isApprovedOrOwner(msg.sender, tokenId), "Must own the token to burn it");
    _burn(tokenId);
  }

  function _burn(uint256 tokenId) internal virtual override(ERC721, ERC721URIStorage) {
    return ERC721URIStorage._burn(tokenId);
  }

  function tokenURI(uint256 tokenId) public view override(ERC721, ERC721URIStorage) returns (string memory) {
    return ERC721URIStorage.tokenURI(tokenId);
  }
  
  function _beforeTokenTransfer(address from, address to, uint256 tokenId) internal virtual override(ERC721, ERC721Enumerable) {
    super._beforeTokenTransfer(from, to, tokenId);
  }

  function supportsInterface(bytes4 interfaceId) public view virtual override(AccessControlEnumerable, ERC721, ERC721Enumerable) returns (bool) {
    return super.supportsInterface(interfaceId);
  }
}
// File: contracts/WitchesOracle.sol



//SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;

import "@openzeppelin/contracts/token/ERC721/ERC721.sol";
import "@openzeppelin/contracts/token/ERC721/extensions/ERC721Enumerable.sol";
import "@openzeppelin/contracts/token/ERC721/extensions/ERC721Burnable.sol";
import "@openzeppelin/contracts/token/ERC721/extensions/ERC721URIStorage.sol";
import "@openzeppelin/contracts/access/AccessControlEnumerable.sol";
import "@openzeppelin/contracts/utils/Context.sol";
import "@openzeppelin/contracts/utils/Counters.sol";


contract WitchesOracle is Context,  AccessControlEnumerable, ERC721Enumerable, ERC721URIStorage{
  using Counters for Counters.Counter;
  Counters.Counter public _tokenIdTracker;

  string private _baseTokenURI;
  /// @notice Mint price
  uint private _price;
  /// @notice Mint price for presale
  uint private _presaleprice;
  /// @notice Max number of token mintable
  uint private _max;
  address _wallet;

  bool _openMint;
  bool _openWhitelistMint;

  mapping(address => bool) private whitelist;

  constructor(string memory name, string memory symbol, string memory baseTokenURI, uint mintPrice, uint mintPreSalePrice, uint max, address wallet, address admin) ERC721(name, symbol) {
      _baseTokenURI = baseTokenURI;
      _price = mintPrice;
      _presaleprice = mintPreSalePrice;
      _max = max;
      _wallet = wallet;
      _openMint = false;
      _openWhitelistMint = false;
      _setupRole(DEFAULT_ADMIN_ROLE, wallet);
      _setupRole(DEFAULT_ADMIN_ROLE, admin);
  }

  function _baseURI() internal view virtual override returns (string memory) {
      return _baseTokenURI;
  }

  function setBaseURI(string memory baseURI) external {
    require(hasRole(DEFAULT_ADMIN_ROLE, _msgSender()), "WitchesOracle: must have admin role to change base URI");
    _baseTokenURI = baseURI;
  }

  function setTokenURI(uint256 tokenId, string memory _tokenURI) external {
    require(hasRole(DEFAULT_ADMIN_ROLE, _msgSender()), "WitchesOracle: must have admin role to change token URI");
    _setTokenURI(tokenId, _tokenURI);
  }

  /**
    @notice Method for updating minting fee
    @dev Only admin
    @param mintPrice uint the minting fee to set
    */
  function setPrice(uint mintPrice) external {
    require(hasRole(DEFAULT_ADMIN_ROLE, _msgSender()), "WitchesOracle: must have admin role to change price");
    _price = mintPrice;
  }

  function setPreSalePrice(uint mintPreSalePrice) external {
    require(hasRole(DEFAULT_ADMIN_ROLE, _msgSender()), "WitchesOracle: must have admin role to change presale price");
    _presaleprice = mintPreSalePrice;
  }

  function setMax(uint max) external {
    require(hasRole(DEFAULT_ADMIN_ROLE, _msgSender()), "WitchesOracle: must have admin role to change the max quantity");
    _max = max;
  }

  function setMint(bool openMint, bool openWhitelistMint) external {
    require(hasRole(DEFAULT_ADMIN_ROLE, _msgSender()), "WitchesOracle: must have admin role to open/close mint");
    _openMint = openMint;
    _openWhitelistMint = openWhitelistMint;
  }

  function getPrice() public view returns (uint) {
    return _price;
  }

  function getPreSalePrice() public view returns (uint) {
    return _presaleprice;
  }

  function getMax() public view returns (uint) {
    return _max;
  }

  function mint(uint amount) public payable {
    require(amount <= 10, "WitchesOracle: max of 10 Oracle Witches per mint");
    require(_openMint == true, "WitchesOracle: minting is closed");
    require(msg.value == _price*amount, "WitchesOracle: must send correct price");
    require(_tokenIdTracker.current() + amount <= _max, "WitchesOracle: not enough Oracle Witches left to be minted");
    for(uint i = 0; i < amount; i++) {
      _mint(msg.sender, _tokenIdTracker.current());
      _tokenIdTracker.increment();
    }
    payable(_wallet).transfer(msg.value);
  }

  function mintWhitelist() public payable {
    require(_openWhitelistMint == true, "WitchesOracle: minting is closed");
    require(whitelist[msg.sender] == true, "WitchesOracle: user must be whitelisted to mint");
    require(msg.value == _presaleprice, "WitchesOracle: must send correct price");
    require(_tokenIdTracker.current() < _max, "WitchesOracle: all Oracle Witches have been minted");
    
    whitelist[msg.sender] = false;
    _mint(msg.sender, _tokenIdTracker.current());
    _tokenIdTracker.increment();
    payable(_wallet).transfer(msg.value);
  }

  function whitelistUser(address user) public {
    require(hasRole(DEFAULT_ADMIN_ROLE, _msgSender()), "WitchesOracle: must have admin role to whitelist address");
    whitelist[user] = true;
  }

  function whitelistStatus(address user) public view returns(bool) {
    return whitelist[user];
  }

  function burn(uint256 tokenId) public{
    require(_isApprovedOrOwner(msg.sender, tokenId), "WitchesOracle: must own the token to burn it");
    _burn(tokenId);
  }

  function _burn(uint256 tokenId) internal virtual override(ERC721, ERC721URIStorage) {
    return ERC721URIStorage._burn(tokenId);
  }

  function tokenURI(uint256 tokenId) public view override(ERC721, ERC721URIStorage) returns (string memory) {
    return ERC721URIStorage.tokenURI(tokenId);
  }
  
  function _beforeTokenTransfer(address from, address to, uint256 tokenId) internal virtual override(ERC721, ERC721Enumerable) {
    super._beforeTokenTransfer(from, to, tokenId);
  }

  function supportsInterface(bytes4 interfaceId) public view virtual override(AccessControlEnumerable, ERC721, ERC721Enumerable) returns (bool) {
    return super.supportsInterface(interfaceId);
  }
}
// File: contracts/MyNFTContractRandom.sol



//SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;

import "../utils/ClampedRandomizer.sol";
import "@openzeppelin/contracts/token/ERC721/ERC721.sol";
import "@openzeppelin/contracts/token/ERC721/extensions/ERC721Enumerable.sol";
import "@openzeppelin/contracts/token/ERC721/extensions/ERC721Burnable.sol";
import "@openzeppelin/contracts/token/ERC721/extensions/ERC721URIStorage.sol";
import "@openzeppelin/contracts/access/AccessControlEnumerable.sol";
import "@openzeppelin/contracts/utils/Context.sol";
import "@openzeppelin/contracts/utils/Counters.sol";


// Overview of contract capability
// Standard ERC721
// Supports for:
// - Presale list
// - Admin other than Owner
// - Burnable
// - Randomized ID at mint - WARNING - THIS PREVENTS THE MAXIMUM NUMBER OF NFTS TO MINT TO CHANGE

contract MyNFTContractRandom is ClampedRandomizer, Context, AccessControlEnumerable, ERC721Enumerable, ERC721URIStorage{
  using Counters for Counters.Counter;
  Counters.Counter public _tokenIdTracker;

  string private _baseTokenURI;
  /// @notice Mint price
  uint private _price;
  /// @notice Mint price for presale
  uint private _presaleprice;
  /// @notice Max number of token mintable
  uint private _max;
  address _wallet;

  bool _openMint;
  bool _openWhitelistMint;

  mapping(address => bool) private whitelist;

  constructor(string memory name, string memory symbol, string memory baseTokenURI, uint mintPrice, uint mintPreSalePrice, uint max, address wallet, address admin) ERC721(name, symbol) ClampedRandomizer(max){
      _baseTokenURI = baseTokenURI;
      _price = mintPrice;
      _presaleprice = mintPreSalePrice;
      _max = max;
      _wallet = wallet;
      _openMint = false;
      _openWhitelistMint = false;
      _setupRole(DEFAULT_ADMIN_ROLE, wallet);
      _setupRole(DEFAULT_ADMIN_ROLE, admin);
  }

  function _baseURI() internal view virtual override returns (string memory) {
      return _baseTokenURI;
  }

  function setBaseURI(string memory baseURI) external {
    require(hasRole(DEFAULT_ADMIN_ROLE, _msgSender()), "Must have admin role to change base URI");
    _baseTokenURI = baseURI;
  }

  function setTokenURI(uint256 tokenId, string memory _tokenURI) external {
    require(hasRole(DEFAULT_ADMIN_ROLE, _msgSender()), "Must have admin role to change token URI");
    _setTokenURI(tokenId, _tokenURI);
  }

  /**
    @notice Method for updating minting fee
    @dev Only admin
    @param mintPrice uint the minting fee to set
    */
  function setPrice(uint mintPrice) external {
    require(hasRole(DEFAULT_ADMIN_ROLE, _msgSender()), "Must have admin role to change price");
    _price = mintPrice;
  }

  function setPreSalePrice(uint mintPreSalePrice) external {
    require(hasRole(DEFAULT_ADMIN_ROLE, _msgSender()), "Must have admin role to change presale price");
    _presaleprice = mintPreSalePrice;
  }

  function setMax(uint max) external {
    require(hasRole(DEFAULT_ADMIN_ROLE, _msgSender()), "Must have admin role to change the max quantity");
    _max = max;
  }

  function setMint(bool openMint, bool openWhitelistMint) external {
    require(hasRole(DEFAULT_ADMIN_ROLE, _msgSender()), "Must have admin role to open/close mint");
    _openMint = openMint;
    _openWhitelistMint = openWhitelistMint;
  }

  function getPrice() public view returns (uint) {
    return _price;
  }

  function getPreSalePrice() public view returns (uint) {
    return _presaleprice;
  }

  function getMax() public view returns (uint) {
    return _max;
  }

  function internalMint(address to) internal {
      uint tokenId = _genClampedNonce();
      _mint(to, tokenId);
  }

  function mint(uint amount) public payable {
    uint supply = totalSupply();
    require(amount <= 10, "Max of 10 NFT per mint");
    require(_openMint == true, "Minting is closed");
    require(msg.value == _price*amount, "Must send correct price");
    require(supply + amount <= _max, "Not enough NFT left to be minted");

    for(uint i = 0; i < amount; i++) {
      internalMint(msg.sender);
    }
    payable(_wallet).transfer(msg.value);
  }

  function mintWhitelist() public payable {
    uint supply = totalSupply();
    require(_openWhitelistMint == true, "Minting is closed");
    require(whitelist[msg.sender] == true, "User must be whitelisted to mint");
    require(msg.value == _presaleprice, "Must send correct price");
    require(supply < _max, "All NFTs have been minted");
    
    whitelist[msg.sender] = false;
    internalMint(msg.sender);
    payable(_wallet).transfer(msg.value);
  }

  function whitelistUser(address user) public {
    require(hasRole(DEFAULT_ADMIN_ROLE, _msgSender()), "Must have admin role to whitelist address");
    whitelist[user] = true;
  }

  function whitelistStatus(address user) public view returns(bool) {
    return whitelist[user];
  }

  function burn(uint256 tokenId) public{
    require(_isApprovedOrOwner(msg.sender, tokenId), "Must own the token to burn it");
    _burn(tokenId);
  }

  function _burn(uint256 tokenId) internal virtual override(ERC721, ERC721URIStorage) {
    return ERC721URIStorage._burn(tokenId);
  }

  function tokenURI(uint256 tokenId) public view override(ERC721, ERC721URIStorage) returns (string memory) {
    return ERC721URIStorage.tokenURI(tokenId);
  }
  
  function _beforeTokenTransfer(address from, address to, uint256 tokenId) internal virtual override(ERC721, ERC721Enumerable) {
    super._beforeTokenTransfer(from, to, tokenId);
  }

  function supportsInterface(bytes4 interfaceId) public view virtual override(AccessControlEnumerable, ERC721, ERC721Enumerable) returns (bool) {
    return super.supportsInterface(interfaceId);
  }
}
// File: utils/ClampedRandomizer.sol



//SPDX-License-Identifier: MIT
pragma solidity ^0.8.7;

contract ClampedRandomizer {
    uint256 private _scopeIndex = 0; //Clamping cache for random TokenID generation in the anti-sniping algo
    uint256 private immutable _scopeCap; //Size of initial randomized number pool & max generated value (zero indexed)
    mapping(uint256 => uint256) _swappedIDs; //TokenID cache for random TokenID generation in the anti-sniping algo

    constructor(uint256 scopeCap) {
        _scopeCap = scopeCap;
    }

    function _genClampedNonce() internal virtual returns (uint256) {
        uint256 scope = _scopeCap - _scopeIndex;
        uint256 swap;
        uint256 result;

        uint256 i = randomNumber() % scope;

        //Setup the value to swap in for the selected number
        if (_swappedIDs[scope - 1] == 0) {
            swap = scope - 1;
        } else {
            swap = _swappedIDs[scope - 1];
        }

        //Select a random number, swap it out with an unselected one then shorten the selection range by 1
        if (_swappedIDs[i] == 0) {
            result = i;
            _swappedIDs[i] = swap;
        } else {
            result = _swappedIDs[i];
            _swappedIDs[i] = swap;
        }
        _scopeIndex++;
        return result;
    }

    function randomNumber() internal view returns (uint256) {
        return uint256(keccak256(abi.encodePacked(block.difficulty, block.timestamp)));
    }
}
// File: contracts/MarbleMaidens.sol



// SPDX-License-Identifier: MIT
import "@openzeppelin/contracts/access/Ownable.sol";
import "@openzeppelin/contracts/token/ERC721/extensions/ERC721Burnable.sol";
import "@openzeppelin/contracts/token/ERC721/extensions/ERC721Enumerable.sol";
import "@openzeppelin/contracts/token/ERC721/extensions/ERC721URIStorage.sol";
import "@openzeppelin/contracts/utils/math/SafeMath.sol";
import "@openzeppelin/contracts/interfaces/IERC2981.sol";
import "@openzeppelin/contracts/interfaces/IERC20.sol";
import "@openzeppelin/contracts/utils/Counters.sol";
import "../layerzero_v0/NonblockingReceiver.sol";
import "../utils/ClampedRandomizer.sol";

pragma solidity ^0.8.7;

contract MarbleMaidens is ERC721Enumerable, ERC721URIStorage, IERC2981, Ownable, ERC721Burnable, NonblockingReceiver, ClampedRandomizer {
    
    using SafeMath for uint;
    using Address for address;

    event Migration(address indexed _to, uint indexed _tokenId);

    string public baseURI;
    // VARIABLES
    uint public startID;
    bool public openMint;
    bool public openWhitelistMint;
    bool public openTraversing;
    uint public maxSupply;
    uint public maxPerTx = 5;
    uint public maxPerPerson;
    uint public _price = 30000000000000000000;
    /// @notice Mint price for presale
    uint private _presaleprice;

    address public royaltyAddress = 0xB22fc8e22CAc0B95b381deA7Ea86705a7d622dF0;
    address private walletMint = 0xB22fc8e22CAc0B95b381deA7Ea86705a7d622dF0;
    uint public royalty = 750;
    uint private gasForDestinationLzReceive = 350000;   

    // MAPPINGS
    mapping(address => uint) public whiteListed;

    constructor(
        uint _startID,
        uint _mintPrice,
        uint _presalePrice,
        uint _maxSupply,
        address _lzEndpoint
    ) ERC721("Marble Maidens", "MARBL") ClampedRandomizer(_maxSupply) {
        startID = _startID;
        _price = _mintPrice;
        _presaleprice = _presalePrice;
        maxSupply = _maxSupply;
        maxPerPerson = _maxSupply;
        openMint = false;
        openTraversing = false;
        openWhitelistMint = false;
        endpoint = ILayerZeroEndpoint(_lzEndpoint);
    }

    // This function transfers the nft from your address on the
    // source chain to the same address on the destination chain
    function traverseChains(uint16 _chainId, uint tokenId) public payable {
        require(openTraversing == true, "Marble Maidens: traversing is closed");
        require(msg.sender == ownerOf(tokenId), "You must own the token to traverse");
        require(trustedRemoteLookup[_chainId].length > 0, "This chain is currently unavailable for travel");

        // burn NFT, eliminating it from circulation on src chain
        _burn(tokenId);

        // abi.encode() the payload with the values to send
        bytes memory payload = abi.encode(msg.sender, tokenId);

        // encode adapterParams to specify more gas for the destination
        uint16 version = 1;
        bytes memory adapterParams = abi.encodePacked(version, gasForDestinationLzReceive);

        // get the fees we need to pay to LayerZero + Relayer to cover message delivery
        // you will be refunded for extra gas paid
        (uint messageFee, ) = endpoint.estimateFees(_chainId, address(this), payload, false, adapterParams);

        require(msg.value >= messageFee, "Error: msg.value not enough to cover messageFee. Send gas for message fees");

        endpoint.send{value: msg.value}(
            _chainId, // destination chainId
            trustedRemoteLookup[_chainId], // destination address of nft contract
            payload, // abi.encoded()'ed bytes
            payable(msg.sender), // refund address
            address(0x0), // 'zroPaymentAddress' unused for this
            adapterParams // txParameters
        );
    }

    // just in case this fixed variable limits us from future integrations
    function setGasForDestinationLzReceive(uint newVal) external onlyOwner {
        gasForDestinationLzReceive = newVal;
    }

    function _LzReceive(
        uint16 _srcChainId,
        bytes memory _srcAddress,
        uint64 _nonce,
        bytes memory _payload
    ) internal override {
        // decode
        (address toAddr, uint tokenId) = abi.decode(_payload, (address, uint));

        // mint the tokens back into existence on destination chain
        _safeMint(toAddr, tokenId);
    }

    function _baseURI() internal view override returns (string memory) {
        return baseURI;
    }

    function mint(uint amount) public payable {
        uint supply = totalSupply();
        require(openMint == true, "Marble Maidens: minting is closed");
        require(supply + amount - 1 < maxSupply, "Error: cannot mint more than total supply");
        require(amount > 0 && amount <= maxPerTx, "Error: max par tx limit");
        //require(balanceOf(msg.sender) + 1 <= maxPerPerson, "Error: max per address limit");
        require(msg.value == _price * amount, "Error: invalid price");
        for (uint i = 0; i < amount; i++) {
            internalMint(msg.sender);
        }
        // Add transfer to destination wallet
        payable(walletMint).transfer(msg.value);
    }

    function mintWhitelist(uint amount) public payable {
        uint supply = totalSupply();
        require(openWhitelistMint == true, "Marble Maidens: minting is closed");
        require(supply + amount - 1 < maxSupply, "Error: cannot mint more than total supply");
        require(whiteListed[msg.sender] >= amount, "WitchesOracle: user must be whitelisted to mint");
        require(amount > 0 && amount <= maxPerTx, "Error: max par tx limit");
        //require(balanceOf(msg.sender) + 1 <= maxPerPerson, "Error: max per address limit");
        require(msg.value == _presaleprice * amount, "Error: invalid price");
        for (uint i = 0; i < amount; i++) {
            internalMint(msg.sender);
            whiteListed[msg.sender] = whiteListed[msg.sender] - 1;
        }
        // Add transfer to destination wallet
        payable(walletMint).transfer(msg.value);
    }

    function tokenURI(uint tokenId) public view override(ERC721, ERC721URIStorage) returns (string memory) {
        return super.tokenURI(tokenId);
    }

    function tokenExists(uint _id) external view returns (bool) {
        return (_exists(_id));
    }

    function royaltyInfo(uint, uint _salePrice) external view override returns (address receiver, uint royaltyAmount) {
        return (royaltyAddress, (_salePrice * royalty) / 10000);
    }

    //dev

    function whiteList(address[] memory _addressList, uint count) external onlyOwner {
        require(_addressList.length > 0, "Error: list is empty");
        for (uint i = 0; i < _addressList.length; ++i) {
            require(_addressList[i] != address(0), "Address cannot be 0.");
            whiteListed[_addressList[i]] = count;
        }
    }

    function whitelistUser(address user, uint nbspot) external onlyOwner{
        whiteListed[user] = nbspot;
    }

    function removeWhiteList(address[] memory addressList) external onlyOwner {
        require(addressList.length > 0, "Error: list is empty");
        for (uint i = 0; i < addressList.length; ++i) whiteListed[addressList[i]] = 0;
    }

    function setMint(bool _openMint) external onlyOwner {
        openMint = _openMint;
    }

    function setWhiteListMint(bool _openWhiteListMint) external onlyOwner {
        openWhitelistMint = _openWhiteListMint;
    }

    function setTraversing(bool _openTraversing) external onlyOwner {
        openTraversing = _openTraversing;
    }

    function setMaxPerPerson(uint newMaxBuy) external onlyOwner {
        maxPerPerson = newMaxBuy;
    }

    function setMaxPerTx(uint newMaxBuy) external onlyOwner {
        maxPerTx = newMaxBuy;
    }

    function setBaseURI(string memory newBaseURI) external onlyOwner {
        baseURI = newBaseURI;
    }

    function setPrice(uint newPrice) external onlyOwner {
        _price = newPrice;
    }

    function setPresalePrice(uint newPresalePrice) external onlyOwner {
        _presaleprice = newPresalePrice;
    }

    function getPrice() public view returns (uint) {
        return _price;
    }

    function getPresalePrice() public view returns (uint) {
        return _presaleprice;
    }

    function getMax() public view returns (uint) {
        return maxSupply;
    }

    function setURI(uint tokenId, string memory uri) external onlyOwner {
        _setTokenURI(tokenId, uri);
    }

    function setRoyalty(uint16 _royalty) external onlyOwner {
        require(_royalty <= 1000, "Royalty must be lower than or equal to 10%");
        royalty = _royalty;
    }

    function setRoyaltyAddress(address _royaltyAddress) external onlyOwner {
        royaltyAddress = _royaltyAddress;
    }

    //Overrides

    function internalMint(address to) internal {
        uint tokenId = _genClampedNonce() + startID;
        _safeMint(to, tokenId);
    }

    function safeMint(address to) public onlyOwner {
        internalMint(to);
    }

    function internalMintToken(address to, uint tokenId) internal {
        _safeMint(to, tokenId);
    }

    function safeMintToken(address to, uint tokenId) public onlyOwner {
        internalMintToken(to, tokenId);
    }

    function supportsInterface(bytes4 interfaceId) public view override(ERC721, ERC721Enumerable, IERC165) returns (bool) {
        return interfaceId == type(IERC2981).interfaceId || super.supportsInterface(interfaceId);
    }

    function _beforeTokenTransfer(
        address from,
        address to,
        uint tokenId
    ) internal override(ERC721, ERC721Enumerable) {
        super._beforeTokenTransfer(from, to, tokenId);
    }

    function _burn(uint tokenId) internal override(ERC721, ERC721URIStorage) {
        super._burn(tokenId);
    }

}
// File: @openzeppelin/contracts/access/Ownable.sol



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

pragma solidity ^0.8.0;

import "../utils/Context.sol";

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

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

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

    /**
     * @dev 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);
    }
}

// File: @openzeppelin/contracts/utils/math/SafeMath.sol



// 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 SafeMath {
    /**
     * @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 substraction 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;
        }
    }
}

// File: @openzeppelin/contracts/interfaces/IERC2981.sol



// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (interfaces/IERC2981.sol)

pragma solidity ^0.8.0;

import "./IERC165.sol";

/**
 * @dev Interface for the NFT Royalty Standard
 */
interface IERC2981 is IERC165 {
    /**
     * @dev 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);
}

// File: @openzeppelin/contracts/interfaces/IERC20.sol



// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (interfaces/IERC20.sol)

pragma solidity ^0.8.0;

import "../token/ERC20/IERC20.sol";

// File: layerzero_v0/NonblockingReceiver.sol



//SPDX-License-Identifier: MIT

import "@openzeppelin/contracts/access/Ownable.sol";
import "./interfaces/ILayerZeroReceiver.sol";
import "./interfaces/ILayerZeroEndpoint.sol";

//pragma solidity ^0.8.6;
pragma solidity ^0.8.4;

abstract contract NonblockingReceiver is Ownable, ILayerZeroReceiver {
    ILayerZeroEndpoint internal endpoint;

    struct FailedMessages {
        uint payloadLength;
        bytes32 payloadHash;
    }

    mapping(uint16 => mapping(bytes => mapping(uint => FailedMessages))) public failedMessages;
    mapping(uint16 => bytes) public trustedRemoteLookup;

    event MessageFailed(uint16 _srcChainId, bytes _srcAddress, uint64 _nonce, bytes _payload);

    function lzReceive(
        uint16 _srcChainId,
        bytes memory _srcAddress,
        uint64 _nonce,
        bytes memory _payload
    ) external override {
        require(msg.sender == address(endpoint)); // boilerplate! lzReceive must be called by the endpoint for security
        require(_srcAddress.length == trustedRemoteLookup[_srcChainId].length && keccak256(_srcAddress) == keccak256(trustedRemoteLookup[_srcChainId]), "NonblockingReceiver: invalid source sending contract");

        // try-catch all errors/exceptions
        // having failed messages does not block messages passing
        try this.onLzReceive(_srcChainId, _srcAddress, _nonce, _payload) {
            // do nothing
        } catch {
            // error / exception
            failedMessages[_srcChainId][_srcAddress][_nonce] = FailedMessages(_payload.length, keccak256(_payload));
            emit MessageFailed(_srcChainId, _srcAddress, _nonce, _payload);
        }
    }

    function onLzReceive(
        uint16 _srcChainId,
        bytes memory _srcAddress,
        uint64 _nonce,
        bytes memory _payload
    ) public {
        // only internal transaction
        require(msg.sender == address(this), "NonblockingReceiver: caller must be Bridge.");

        // handle incoming message
        _LzReceive(_srcChainId, _srcAddress, _nonce, _payload);
    }

    // abstract function
    function _LzReceive(
        uint16 _srcChainId,
        bytes memory _srcAddress,
        uint64 _nonce,
        bytes memory _payload
    ) internal virtual;

    function _lzSend(
        uint16 _dstChainId,
        bytes memory _payload,
        address payable _refundAddress,
        address _zroPaymentAddress,
        bytes memory _txParam
    ) internal {
        endpoint.send{value: msg.value}(_dstChainId, trustedRemoteLookup[_dstChainId], _payload, _refundAddress, _zroPaymentAddress, _txParam);
    }

    function retryMessage(
        uint16 _srcChainId,
        bytes memory _srcAddress,
        uint64 _nonce,
        bytes calldata _payload
    ) external payable {
        // assert there is message to retry
        FailedMessages storage failedMsg = failedMessages[_srcChainId][_srcAddress][_nonce];
        require(failedMsg.payloadHash != bytes32(0), "NonblockingReceiver: no stored message");
        require(_payload.length == failedMsg.payloadLength && keccak256(_payload) == failedMsg.payloadHash, "LayerZero: invalid payload");
        // clear the stored message
        failedMsg.payloadLength = 0;
        failedMsg.payloadHash = bytes32(0);
        // execute the message. revert if it fails again
        this.onLzReceive(_srcChainId, _srcAddress, _nonce, _payload);
    }

    function setTrustedRemote(uint16 _chainId, bytes calldata _trustedRemote) external onlyOwner {
        trustedRemoteLookup[_chainId] = _trustedRemote;
    }
}
// File: @openzeppelin/contracts/interfaces/IERC165.sol



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

pragma solidity ^0.8.0;

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

// File: @openzeppelin/contracts/token/ERC20/IERC20.sol



// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (token/ERC20/IERC20.sol)

pragma solidity ^0.8.0;

/**
 * @dev Interface of the ERC20 standard as defined in the EIP.
 */
interface IERC20 {
    /**
     * @dev Returns the amount of tokens in existence.
     */
    function totalSupply() external view returns (uint256);

    /**
     * @dev Returns the amount of tokens owned by `account`.
     */
    function balanceOf(address account) external view returns (uint256);

    /**
     * @dev Moves `amount` tokens from the caller's account to `recipient`.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * Emits a {Transfer} event.
     */
    function transfer(address recipient, uint256 amount) external returns (bool);

    /**
     * @dev Returns the remaining number of tokens that `spender` will be
     * allowed to spend on behalf of `owner` through {transferFrom}. This is
     * zero by default.
     *
     * This value changes when {approve} or {transferFrom} are called.
     */
    function allowance(address owner, address spender) external view returns (uint256);

    /**
     * @dev Sets `amount` as the allowance of `spender` over the caller's tokens.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * IMPORTANT: Beware that changing an allowance with this method brings the risk
     * that someone may use both the old and the new allowance by unfortunate
     * transaction ordering. One possible solution to mitigate this race
     * condition is to first reduce the spender's allowance to 0 and set the
     * desired value afterwards:
     * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
     *
     * Emits an {Approval} event.
     */
    function approve(address spender, uint256 amount) external returns (bool);

    /**
     * @dev Moves `amount` tokens from `sender` to `recipient` using the
     * allowance mechanism. `amount` is then deducted from the caller's
     * allowance.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * Emits a {Transfer} event.
     */
    function transferFrom(
        address sender,
        address recipient,
        uint256 amount
    ) external returns (bool);

    /**
     * @dev Emitted when `value` tokens are moved from one account (`from`) to
     * another (`to`).
     *
     * Note that `value` may be zero.
     */
    event Transfer(address indexed from, address indexed to, uint256 value);

    /**
     * @dev Emitted when the allowance of a `spender` for an `owner` is set by
     * a call to {approve}. `value` is the new allowance.
     */
    event Approval(address indexed owner, address indexed spender, uint256 value);
}

// File: layerzero_v0/interfaces/ILayerZeroReceiver.sol



// SPDX-License-Identifier: BUSL-1.1

pragma solidity >=0.5.0;

interface ILayerZeroReceiver {
    // @notice LayerZero endpoint will invoke this function to deliver the message on the destination
    // @param _srcChainId - the source endpoint identifier
    // @param _srcAddress - the source sending contract address from the source chain
    // @param _nonce - the ordered message nonce
    // @param _payload - the signed payload is the UA bytes has encoded to be sent
    function lzReceive(uint16 _srcChainId, bytes calldata _srcAddress, uint64 _nonce, bytes calldata _payload) external;
}
// File: layerzero_v0/interfaces/ILayerZeroEndpoint.sol



// SPDX-License-Identifier: BUSL-1.1

pragma solidity >=0.5.0;

import "./ILayerZeroUserApplicationConfig.sol";

interface ILayerZeroEndpoint is ILayerZeroUserApplicationConfig {
    // @notice send a LayerZero message to the specified address at a LayerZero endpoint.
    // @param _dstChainId - the destination chain identifier
    // @param _destination - the address on destination chain (in bytes). address length/format may vary by chains
    // @param _payload - a custom bytes payload to send to the destination contract
    // @param _refundAddress - if the source transaction is cheaper than the amount of value passed, refund the additional amount to this address
    // @param _zroPaymentAddress - the address of the ZRO token holder who would pay for the transaction
    // @param _adapterParams - parameters for custom functionality. e.g. receive airdropped native gas from the relayer on destination
    function send(uint16 _dstChainId, bytes calldata _destination, bytes calldata _payload, address payable _refundAddress, address _zroPaymentAddress, bytes calldata _adapterParams) external payable;

    // @notice used by the messaging library to publish verified payload
    // @param _srcChainId - the source chain identifier
    // @param _srcAddress - the source contract (as bytes) at the source chain
    // @param _dstAddress - the address on destination chain
    // @param _nonce - the unbound message ordering nonce
    // @param _gasLimit - the gas limit for external contract execution
    // @param _payload - verified payload to send to the destination contract
    function receivePayload(uint16 _srcChainId, bytes calldata _srcAddress, address _dstAddress, uint64 _nonce, uint _gasLimit, bytes calldata _payload) external;

    // @notice get the inboundNonce of a receiver from a source chain which could be EVM or non-EVM chain
    // @param _srcChainId - the source chain identifier
    // @param _srcAddress - the source chain contract address
    function getInboundNonce(uint16 _srcChainId, bytes calldata _srcAddress) external view returns (uint64);

    // @notice get the outboundNonce from this source chain which, consequently, is always an EVM
    // @param _srcAddress - the source chain contract address
    function getOutboundNonce(uint16 _dstChainId, address _srcAddress) external view returns (uint64);

    // @notice gets a quote in source native gas, for the amount that send() requires to pay for message delivery
    // @param _dstChainId - the destination chain identifier
    // @param _userApplication - the user app address on this EVM chain
    // @param _payload - the custom message to send over LayerZero
    // @param _payInZRO - if false, user app pays the protocol fee in native token
    // @param _adapterParam - parameters for the adapter service, e.g. send some dust native token to dstChain
    function estimateFees(uint16 _dstChainId, address _userApplication, bytes calldata _payload, bool _payInZRO, bytes calldata _adapterParam) external view returns (uint nativeFee, uint zroFee);

    // @notice get this Endpoint's immutable source identifier
    function getChainId() external view returns (uint16);

    // @notice the interface to retry failed message on this Endpoint destination
    // @param _srcChainId - the source chain identifier
    // @param _srcAddress - the source chain contract address
    // @param _payload - the payload to be retried
    function retryPayload(uint16 _srcChainId, bytes calldata _srcAddress, bytes calldata _payload) external;

    // @notice query if any STORED payload (message blocking) at the endpoint.
    // @param _srcChainId - the source chain identifier
    // @param _srcAddress - the source chain contract address
    function hasStoredPayload(uint16 _srcChainId, bytes calldata _srcAddress) external view returns (bool);

    // @notice query if the _libraryAddress is valid for sending msgs.
    // @param _userApplication - the user app address on this EVM chain
    function getSendLibraryAddress(address _userApplication) external view returns (address);

    // @notice query if the _libraryAddress is valid for receiving msgs.
    // @param _userApplication - the user app address on this EVM chain
    function getReceiveLibraryAddress(address _userApplication) external view returns (address);

    // @notice query if the non-reentrancy guard for send() is on
    // @return true if the guard is on. false otherwise
    function isSendingPayload() external view returns (bool);

    // @notice query if the non-reentrancy guard for receive() is on
    // @return true if the guard is on. false otherwise
    function isReceivingPayload() external view returns (bool);

    // @notice get the configuration of the LayerZero messaging library of the specified version
    // @param _version - messaging library version
    // @param _chainId - the chainId for the pending config change
    // @param _userApplication - the contract address of the user application
    // @param _configType - type of configuration. every messaging library has its own convention.
    function getConfig(uint16 _version, uint16 _chainId, address _userApplication, uint _configType) external view returns (bytes memory);

    // @notice get the send() LayerZero messaging library version
    // @param _userApplication - the contract address of the user application
    function getSendVersion(address _userApplication) external view returns (uint16);

    // @notice get the lzReceive() LayerZero messaging library version
    // @param _userApplication - the contract address of the user application
    function getReceiveVersion(address _userApplication) external view returns (uint16);
}
// File: layerzero_v0/interfaces/ILayerZeroUserApplicationConfig.sol



// SPDX-License-Identifier: BUSL-1.1

pragma solidity >=0.5.0;

interface ILayerZeroUserApplicationConfig {
    // @notice set the configuration of the LayerZero messaging library of the specified version
    // @param _version - messaging library version
    // @param _chainId - the chainId for the pending config change
    // @param _configType - type of configuration. every messaging library has its own convention.
    // @param _config - configuration in the bytes. can encode arbitrary content.
    function setConfig(uint16 _version, uint16 _chainId, uint _configType, bytes calldata _config) external;

    // @notice set the send() LayerZero messaging library version to _version
    // @param _version - new messaging library version
    function setSendVersion(uint16 _version) external;

    // @notice set the lzReceive() LayerZero messaging library version to _version
    // @param _version - new messaging library version
    function setReceiveVersion(uint16 _version) external;

    // @notice Only when the UA needs to resume the message flow in blocking mode and clear the stored payload
    // @param _srcChainId - the chainId of the source chain
    // @param _srcAddress - the contract address of the source contract at the source chain
    function forceResumeReceive(uint16 _srcChainId, bytes calldata _srcAddress) external;
}
// File: contracts/HauntedWitches.sol



// SPDX-License-Identifier: MIT
import "@openzeppelin/contracts/access/Ownable.sol";
import "@openzeppelin/contracts/token/ERC721/extensions/ERC721Burnable.sol";
import "@openzeppelin/contracts/token/ERC721/extensions/ERC721Enumerable.sol";
import "@openzeppelin/contracts/token/ERC721/extensions/ERC721URIStorage.sol";
import "@openzeppelin/contracts/utils/math/SafeMath.sol";
import "@openzeppelin/contracts/interfaces/IERC2981.sol";
import "@openzeppelin/contracts/interfaces/IERC20.sol";
import "@openzeppelin/contracts/utils/Counters.sol";
import "../layerzero_v0/NonblockingReceiver.sol";
import "../utils/ClampedRandomizer.sol";

pragma solidity ^0.8.7;

contract HauntedWitches is ERC721Enumerable, ERC721URIStorage, IERC2981, Ownable, ERC721Burnable, NonblockingReceiver, ClampedRandomizer {
    
    using SafeMath for uint;
    using Address for address;
    using Counters for Counters.Counter;
    Counters.Counter private _tokenIdTracker;

    event Migration(address indexed _to, uint indexed _tokenId);

    string public baseURI;
    // VARIABLES
    uint public startID;
    bool public whitelistedOnly;
    bool public openMint;
    bool public openTraversing;
    uint public maxSupply;
    uint public maxPerTx = 5;
    uint public maxPerPerson;
    uint public price = 30000000000000000000;
    address public royaltyAddress = 0xB22fc8e22CAc0B95b381deA7Ea86705a7d622dF0;
    address private walletMint = 0xB22fc8e22CAc0B95b381deA7Ea86705a7d622dF0;
    uint public royalty = 750;
    uint private gasForDestinationLzReceive = 350000;   

    // MAPPINGS
    mapping(address => uint) public whiteListed;
    mapping(address => uint) public mintedCount;

    constructor(
        uint _startID,
        uint _mintPrice,
        uint _maxSupply,
        address _lzEndpoint,
        uint _randomizedSupply
    ) ERC721("BitWitches Haunted", "BWH") ClampedRandomizer(_randomizedSupply) {
        startID = _startID;
        price = _mintPrice;
        maxSupply = _maxSupply;
        maxPerPerson = _maxSupply;
        openMint = false;
        openTraversing = false;
        whitelistedOnly = false;
        endpoint = ILayerZeroEndpoint(_lzEndpoint);
    }

    // This function transfers the nft from your address on the
    // source chain to the same address on the destination chain
    function traverseChains(uint16 _chainId, uint tokenId) public payable {
        require(openTraversing == true, "Haunted BitWitches: traversing is closed");
        require(msg.sender == ownerOf(tokenId), "You must own the token to traverse");
        require(trustedRemoteLookup[_chainId].length > 0, "This chain is currently unavailable for travel");

        // burn NFT, eliminating it from circulation on src chain
        _burn(tokenId);

        // abi.encode() the payload with the values to send
        bytes memory payload = abi.encode(msg.sender, tokenId);

        // encode adapterParams to specify more gas for the destination
        uint16 version = 1;
        bytes memory adapterParams = abi.encodePacked(version, gasForDestinationLzReceive);

        // get the fees we need to pay to LayerZero + Relayer to cover message delivery
        // you will be refunded for extra gas paid
        (uint messageFee, ) = endpoint.estimateFees(_chainId, address(this), payload, false, adapterParams);

        require(msg.value >= messageFee, "Error: msg.value not enough to cover messageFee. Send gas for message fees");

        endpoint.send{value: msg.value}(
            _chainId, // destination chainId
            trustedRemoteLookup[_chainId], // destination address of nft contract
            payload, // abi.encoded()'ed bytes
            payable(msg.sender), // refund address
            address(0x0), // 'zroPaymentAddress' unused for this
            adapterParams // txParameters
        );
    }

    // just in case this fixed variable limits us from future integrations
    function setGasForDestinationLzReceive(uint newVal) external onlyOwner {
        gasForDestinationLzReceive = newVal;
    }

    function _LzReceive(
        uint16 _srcChainId,
        bytes memory _srcAddress,
        uint64 _nonce,
        bytes memory _payload
    ) internal override {
        // decode
        (address toAddr, uint tokenId) = abi.decode(_payload, (address, uint));

        // mint the tokens back into existence on destination chain
        _safeMint(toAddr, tokenId);
    }

    function _baseURI() internal view override returns (string memory) {
        return baseURI;
    }

    function mint(uint amount) public payable {
        uint supply = totalSupply();
        require(openMint == true, "Haunted BitWitches: minting is closed");
        require(supply + amount - 1 < maxSupply, "Error: cannot mint more than total supply");
        require(amount > 0 && amount <= maxPerTx, "Error: max par tx limit");
        require(balanceOf(msg.sender) + 1 <= maxPerPerson, "Error: max per address limit");
        require(msg.value == price * amount, "Error: invalid price");
        if (whitelistedOnly) require(whiteListed[msg.sender] >= amount, "Error: you are not whitelisted or amount is higher than limit");
        uint tempCount = mintedCount[msg.sender];
        for (uint i = 0; i < amount; i++) {
            internalMint(msg.sender);
            tempCount += 1;
            if (whitelistedOnly) whiteListed[msg.sender] -= 1;
        }
        mintedCount[msg.sender] = tempCount;
        // Add transfer to destination wallet
        payable(walletMint).transfer(msg.value);
    }

    function tokenURI(uint tokenId) public view override(ERC721, ERC721URIStorage) returns (string memory) {
        return super.tokenURI(tokenId);
    }

    function Owned(address _owner) external view returns (uint[] memory) {
        uint tokenCount = balanceOf(_owner);
        if (tokenCount == 0) {
            return new uint[](0);
        } else {
            uint[] memory result = new uint[](tokenCount);
            uint index;
            for (index = 0; index < tokenCount; ++index) {
                result[index] = tokenOfOwnerByIndex(_owner, index);
            }
            return result;
        }
    }

    function tokenExists(uint _id) external view returns (bool) {
        return (_exists(_id));
    }

    function royaltyInfo(uint, uint _salePrice) external view override returns (address receiver, uint royaltyAmount) {
        return (royaltyAddress, (_salePrice * royalty) / 10000);
    }

    //dev

    function whiteList(address[] memory _addressList, uint count) external onlyOwner {
        require(_addressList.length > 0, "Error: list is empty");
        for (uint i = 0; i < _addressList.length; ++i) {
            require(_addressList[i] != address(0), "Address cannot be 0.");
            whiteListed[_addressList[i]] = count;
        }
    }

    function whitelistUser(address user, uint nbspot) external onlyOwner{
        whiteListed[user] = nbspot;
    }

    function removeWhiteList(address[] memory addressList) external onlyOwner {
        require(addressList.length > 0, "Error: list is empty");
        for (uint i = 0; i < addressList.length; ++i) whiteListed[addressList[i]] = 0;
    }

    function updateWhitelistStatus() external onlyOwner {
        whitelistedOnly = !whitelistedOnly;
    }

    function setMint(bool _openMint) external onlyOwner {
        openMint = _openMint;
    }

    function setTraversing(bool _openTraversing) external onlyOwner {
        openTraversing = _openTraversing;
    }

    function setMaxPerPerson(uint newMaxBuy) external onlyOwner {
        maxPerPerson = newMaxBuy;
    }

    function setMaxPerTx(uint newMaxBuy) external onlyOwner {
        maxPerTx = newMaxBuy;
    }

    function setBaseURI(string memory newBaseURI) external onlyOwner {
        baseURI = newBaseURI;
    }

    function setPrice(uint newPrice) external onlyOwner {
        price = newPrice;
    }

    function getPrice() public view returns (uint) {
        return price;
    }

    function getMax() public view returns (uint) {
        return maxSupply;
    }

    function setURI(uint tokenId, string memory uri) external onlyOwner {
        _setTokenURI(tokenId, uri);
    }

    function setRoyalty(uint16 _royalty) external onlyOwner {
        require(_royalty <= 1000, "Royalty must be lower than or equal to 10%");
        royalty = _royalty;
    }

    function setRoyaltyAddress(address _royaltyAddress) external onlyOwner {
        royaltyAddress = _royaltyAddress;
    }

    //Overrides

    function internalMint(address to) internal {
        uint tokenId = _genClampedNonce() + startID;
        _safeMint(to, tokenId);
    }

    function safeMint(address to) public onlyOwner {
        internalMint(to);
    }

    function internalMintToken(address to, uint tokenId) internal {
        _safeMint(to, tokenId);
    }

    function safeMintToken(address to, uint tokenId) public onlyOwner {
        internalMintToken(to, tokenId);
    }

    function supportsInterface(bytes4 interfaceId) public view override(ERC721, ERC721Enumerable, IERC165) returns (bool) {
        return interfaceId == type(IERC2981).interfaceId || super.supportsInterface(interfaceId);
    }

    function _beforeTokenTransfer(
        address from,
        address to,
        uint tokenId
    ) internal override(ERC721, ERC721Enumerable) {
        super._beforeTokenTransfer(from, to, tokenId);
    }

    function _burn(uint tokenId) internal override(ERC721, ERC721URIStorage) {
        super._burn(tokenId);
    }

    function airdropsToken(address[] memory _addr, uint256 amount) public onlyOwner {
        for (uint256 i = 0; i < _addr.length; i++) {
            airdropTokenInternal(amount, _addr[i]);
        }
    }
    
    function airdropTokenInternal(uint256 amount, address _addr) internal {
        require(_tokenIdTracker.current() + amount <= startID, "Haunted BitWitches: not enough witches left to be minted");
        for (uint256 i = 0; i < amount; i++) {
            _safeMint(_addr, _tokenIdTracker.current());
            _tokenIdTracker.increment();
        }
    }
}
// File: contracts/BitWitchesRituals.sol



// SPDX-License-Identifier: MIT
import "@openzeppelin/contracts/access/Ownable.sol";
import "@openzeppelin/contracts/token/ERC721/extensions/ERC721Burnable.sol";
import "@openzeppelin/contracts/token/ERC721/extensions/ERC721Enumerable.sol";
import "@openzeppelin/contracts/token/ERC721/extensions/ERC721URIStorage.sol";
import "@openzeppelin/contracts/utils/math/SafeMath.sol";
import "@openzeppelin/contracts/interfaces/IERC2981.sol";
import "@openzeppelin/contracts/interfaces/IERC20.sol";
import "@openzeppelin/contracts/utils/Counters.sol";
import "../layerzero_v0/NonblockingReceiver.sol";

pragma solidity ^0.8.7;

contract BitWitchesRituals is ERC721Enumerable, ERC721URIStorage, IERC2981, Ownable, ERC721Burnable, NonblockingReceiver {
    
    using SafeMath for uint;
    using Address for address;
    using Counters for Counters.Counter;
    Counters.Counter private _tokenIdTracker;

    event Migration(address indexed _to, uint indexed _tokenId);

    string public baseURI;
    // VARIABLES
    bool public whitelistedOnly;
    bool public openMint;
    bool public openTraversing;
    uint public maxSupply;
    uint public maxPerTx = 5;
    uint public maxPerPerson;
    uint public price = 30000000000000000000;
    address public royaltyAddress = 0xB22fc8e22CAc0B95b381deA7Ea86705a7d622dF0;
    address private walletMint = 0xB22fc8e22CAc0B95b381deA7Ea86705a7d622dF0;
    uint public royalty = 750;
    uint private gasForDestinationLzReceive = 350000;   

    // MAPPINGS
    mapping(address => uint) public whiteListed;

    constructor(
        uint _mintPrice,
        uint _maxSupply,
        address _lzEndpoint
    ) ERC721("BitWitches Rituals", "BWRT") {
        price = _mintPrice;
        maxSupply = _maxSupply;
        maxPerPerson = _maxSupply;
        openMint = false;
        openTraversing = false;
        whitelistedOnly = true;
        endpoint = ILayerZeroEndpoint(_lzEndpoint);
    }

    // This function transfers the nft from your address on the
    // source chain to the same address on the destination chain
    function traverseChains(uint16 _chainId, uint tokenId) public payable {
        require(openTraversing == true, "Traversing is closed");
        require(msg.sender == ownerOf(tokenId), "You must own the token to traverse");
        require(trustedRemoteLookup[_chainId].length > 0, "This chain is currently unavailable for travel");

        // burn NFT, eliminating it from circulation on src chain
        _burn(tokenId);

        // abi.encode() the payload with the values to send
        bytes memory payload = abi.encode(msg.sender, tokenId);

        // encode adapterParams to specify more gas for the destination
        uint16 version = 1;
        bytes memory adapterParams = abi.encodePacked(version, gasForDestinationLzReceive);

        // get the fees we need to pay to LayerZero + Relayer to cover message delivery
        // you will be refunded for extra gas paid
        (uint messageFee, ) = endpoint.estimateFees(_chainId, address(this), payload, false, adapterParams);

        require(msg.value >= messageFee, "Error: msg.value not enough to cover messageFee. Send gas for message fees");

        endpoint.send{value: msg.value}(
            _chainId, // destination chainId
            trustedRemoteLookup[_chainId], // destination address of nft contract
            payload, // abi.encoded()'ed bytes
            payable(msg.sender), // refund address
            address(0x0), // 'zroPaymentAddress' unused for this
            adapterParams // txParameters
        );
    }

    // just in case this fixed variable limits us from future integrations
    function setGasForDestinationLzReceive(uint newVal) external onlyOwner {
        gasForDestinationLzReceive = newVal;
    }

    function _LzReceive(
        uint16 _srcChainId,
        bytes memory _srcAddress,
        uint64 _nonce,
        bytes memory _payload
    ) internal override {
        // decode
        (address toAddr, uint tokenId) = abi.decode(_payload, (address, uint));

        // mint the tokens back into existence on destination chain
        _safeMint(toAddr, tokenId);
    }

    function _baseURI() internal view override returns (string memory) {
        return baseURI;
    }

    function mint(uint amount) public payable {
        uint supply = totalSupply();
        require(openMint == true, "Minting is closed");
        require(supply + amount - 1 < maxSupply, "Error: cannot mint more than total supply");
        require(amount > 0 && amount <= maxPerTx, "Error: max par tx limit");
        require(balanceOf(msg.sender) + 1 <= maxPerPerson, "Error: max per address limit");
        require(msg.value == price * amount, "Error: invalid price");
        if (whitelistedOnly) require(whiteListed[msg.sender] >= amount, "Error: you are not whitelisted or amount is higher than limit");
        for (uint i = 0; i < amount; i++) {
            internalMintToken(msg.sender, _tokenIdTracker.current());
             _tokenIdTracker.increment();
            if (whitelistedOnly) whiteListed[msg.sender] -= 1;
        }
        // Add transfer to destination wallet
        payable(walletMint).transfer(msg.value);
    }

    function tokenURI(uint tokenId) public view override(ERC721, ERC721URIStorage) returns (string memory) {
        return super.tokenURI(tokenId);
    }

    function Owned(address _owner) external view returns (uint[] memory) {
        uint tokenCount = balanceOf(_owner);
        if (tokenCount == 0) {
            return new uint[](0);
        } else {
            uint[] memory result = new uint[](tokenCount);
            uint index;
            for (index = 0; index < tokenCount; ++index) {
                result[index] = tokenOfOwnerByIndex(_owner, index);
            }
            return result;
        }
    }

    function tokenExists(uint _id) external view returns (bool) {
        return (_exists(_id));
    }

    function royaltyInfo(uint, uint _salePrice) external view override returns (address receiver, uint royaltyAmount) {
        return (royaltyAddress, (_salePrice * royalty) / 10000);
    }

    //dev

    function whiteList(address[] memory _addressList, uint count) external onlyOwner {
        require(_addressList.length > 0, "Error: list is empty");
        for (uint i = 0; i < _addressList.length; ++i) {
            require(_addressList[i] != address(0), "Address cannot be 0.");
            whiteListed[_addressList[i]] = count;
        }
    }

    function whitelistUser(address user, uint nbspot) external onlyOwner{
        whiteListed[user] = nbspot;
    }

    function removeWhiteList(address[] memory addressList) external onlyOwner {
        require(addressList.length > 0, "Error: list is empty");
        for (uint i = 0; i < addressList.length; ++i) whiteListed[addressList[i]] = 0;
    }

    function updateWhitelistStatus() external onlyOwner {
        whitelistedOnly = !whitelistedOnly;
    }

    function setMint(bool _openMint) external onlyOwner {
        openMint = _openMint;
    }

    function setTraversing(bool _openTraversing) external onlyOwner {
        openTraversing = _openTraversing;
    }

    function setMaxPerPerson(uint newMaxBuy) external onlyOwner {
        maxPerPerson = newMaxBuy;
    }

    function setMaxPerTx(uint newMaxBuy) external onlyOwner {
        maxPerTx = newMaxBuy;
    }

    function setBaseURI(string memory newBaseURI) external onlyOwner {
        baseURI = newBaseURI;
    }

    function setPrice(uint newPrice) external onlyOwner {
        price = newPrice;
    }

    function getPrice() public view returns (uint) {
        return price;
    }

    function setMaxSupply(uint newSupply) external onlyOwner {
        maxSupply = newSupply;
    }

    function getMax() public view returns (uint) {
        return maxSupply;
    }

    function setURI(uint tokenId, string memory uri) external onlyOwner {
        _setTokenURI(tokenId, uri);
    }

    function setRoyalty(uint16 _royalty) external onlyOwner {
        require(_royalty <= 1000, "Royalty must be lower than or equal to 10%");
        royalty = _royalty;
    }

    function setRoyaltyAddress(address _royaltyAddress) external onlyOwner {
        royaltyAddress = _royaltyAddress;
    }

    //Overrides
    function internalMintToken(address to, uint tokenId) internal {
        _safeMint(to, tokenId);
    }

    function safeMintToken(address to, uint tokenId) public onlyOwner {
        internalMintToken(to, tokenId);
    }

    function supportsInterface(bytes4 interfaceId) public view override(ERC721, ERC721Enumerable, IERC165) returns (bool) {
        return interfaceId == type(IERC2981).interfaceId || super.supportsInterface(interfaceId);
    }

    function _beforeTokenTransfer(
        address from,
        address to,
        uint tokenId
    ) internal override(ERC721, ERC721Enumerable) {
        super._beforeTokenTransfer(from, to, tokenId);
    }

    function _burn(uint tokenId) internal override(ERC721, ERC721URIStorage) {
        super._burn(tokenId);
    }

    function airdropsToken(address[] memory _addr, uint256 amount) public onlyOwner {
        for (uint256 i = 0; i < _addr.length; i++) {
            airdropTokenInternal(amount, _addr[i]);
        }
    }
    
    function airdropTokenInternal(uint256 amount, address _addr) internal {
        for (uint256 i = 0; i < amount; i++) {
            _safeMint(_addr, _tokenIdTracker.current());
            _tokenIdTracker.increment();
        }
    }
}
// File: contracts/BannersOracleLZClean.sol



//SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;

import "@openzeppelin/contracts/token/ERC721/ERC721.sol";
import "@openzeppelin/contracts/token/ERC721/extensions/ERC721Enumerable.sol";
import "@openzeppelin/contracts/token/ERC721/extensions/ERC721Burnable.sol";
import "@openzeppelin/contracts/token/ERC721/extensions/ERC721URIStorage.sol";
import "@openzeppelin/contracts/access/AccessControlEnumerable.sol";
import "@openzeppelin/contracts/utils/Context.sol";
import "@openzeppelin/contracts/utils/Counters.sol";
import "../layerzero/contracts/token/onft/IONFT721.sol";
import "../layerzero/contracts/lzApp/NonblockingLzApp.sol";

contract BannersOracleLZClean is Context, AccessControlEnumerable, ERC721Enumerable, ERC721URIStorage, IONFT721, NonblockingLzApp{
  using Counters for Counters.Counter;
  Counters.Counter public _tokenIdTracker;

  string private _baseTokenURI;
  /// @notice Mint price
  uint private _price;
  /// @notice Max number of token mintable
  uint private _max;
  address _wallet;

  bool _openMint;
  bool _openWhitelistMint;

  mapping(address => uint) private whitelist;

  constructor(string memory name, string memory symbol, string memory baseTokenURI, uint mintPrice, uint max, address wallet, address admin, address _lzEndpoint) ERC721(name, symbol) NonblockingLzApp(_lzEndpoint){
      _baseTokenURI = baseTokenURI;
      _price = mintPrice;
      _max = max;
      _wallet = wallet;
      _openMint = false;
      _openWhitelistMint = false;
      _setupRole(DEFAULT_ADMIN_ROLE, wallet);
      _setupRole(DEFAULT_ADMIN_ROLE, admin);
  }

  function _baseURI() internal view virtual override returns (string memory) {
      return _baseTokenURI;
  }

  function setBaseURI(string memory baseURI) external {
    require(hasRole(DEFAULT_ADMIN_ROLE, _msgSender()), "BannersOracle: must have admin role to change base URI");
    _baseTokenURI = baseURI;
  }

  function setTokenURI(uint256 tokenId, string memory _tokenURI) external {
    require(hasRole(DEFAULT_ADMIN_ROLE, _msgSender()), "BannersOracle: must have admin role to change token URI");
    _setTokenURI(tokenId, _tokenURI);
  }

  /**
    @notice Method for updating minting fee
    @dev Only admin
    @param mintPrice uint the minting fee to set
    */
  function setPrice(uint mintPrice) external {
    require(hasRole(DEFAULT_ADMIN_ROLE, _msgSender()), "BannersOracle: must have admin role to change price");
    _price = mintPrice;
  }

  function setMax(uint max) external {
    require(hasRole(DEFAULT_ADMIN_ROLE, _msgSender()), "BannersOracle: must have admin role to change the max quantity");
    _max = max;
  }

  function setMint(bool openMint, bool openWhitelistMint) external {
    require(hasRole(DEFAULT_ADMIN_ROLE, _msgSender()), "BannersOracle: must have admin role to open/close mint");
    _openMint = openMint;
    _openWhitelistMint = openWhitelistMint;
  }

  function getPrice() public view returns (uint) {
    return _price;
  }

  function getMax() public view returns (uint) {
    return _max;
  }

  function mint(uint amount) public payable {
    require(amount <= 10, "BannersOracle: max of 10 Oracle Witches per mint");
    require(_openMint == true, "BannersOracle: minting is closed");
    require(msg.value == _price*amount, "BannersOracle: must send correct price");
    require(_tokenIdTracker.current() + amount <= _max, "BannersOracle: not enough Banners left to be minted");
    for(uint i = 0; i < amount; i++) {
      _mint(msg.sender, _tokenIdTracker.current());
      _tokenIdTracker.increment();
    }
    payable(_wallet).transfer(msg.value);
  }

  // function mintWhitelist() public payable {
  //   require(_openWhitelistMint == true, "BannersOracle: minting is closed");
  //   require(whitelist[msg.sender] > 0, "BannersOracle: user must be whitelisted to mint");
  //   require(msg.value == _presaleprice, "BannersOracle: must send correct price");
  //   require(_tokenIdTracker.current() < _max, "BannersOracle: all Oracle Witches have been minted");
    
  //   whitelist[msg.sender] = whitelist[msg.sender] - 1;
  //   _mint(msg.sender, _tokenIdTracker.current());
  //   _tokenIdTracker.increment();
  //   payable(_wallet).transfer(msg.value);
  // }

  function mintWhitelist(uint amount) public {
    require(_openWhitelistMint == true, "BannersOracle: minting is closed");
    require(whitelist[msg.sender] > 0, "BannersOracle: user must be whitelisted to mint");
    require(amount <= whitelist[msg.sender], "BannersOracle: user must have enough whitelist spots left to mint");
    require(_tokenIdTracker.current() + amount <= _max, "BannersOracle: not enough Banners left to be minted");

    for(uint i = 0; i < amount; i++) {
      _mint(msg.sender, _tokenIdTracker.current());
      whitelist[msg.sender] = whitelist[msg.sender] - 1;
      _tokenIdTracker.increment();
    }
  }

  function whitelistUser(address user, uint nbspot) public {
    require(hasRole(DEFAULT_ADMIN_ROLE, _msgSender()), "BannersOracle: must have admin role to whitelist address");
    whitelist[user] = nbspot;
  }

  function whitelistStatus(address user) public view returns(uint) {
    // if (whitelist[user] > 0) {
    //   return whitelist[user];
    // }
    // else {
    //   return 0;
    // }
    return whitelist[user];
  }

  function burn(uint256 tokenId) public{
    require(_isApprovedOrOwner(msg.sender, tokenId), "BannersOracle: must own the token to burn it");
    _burn(tokenId);
  }

  function _burn(uint256 tokenId) internal virtual override(ERC721, ERC721URIStorage) {
    return ERC721URIStorage._burn(tokenId);
  }

  function tokenURI(uint256 tokenId) public view override(ERC721, ERC721URIStorage) returns (string memory) {
    return ERC721URIStorage.tokenURI(tokenId);
  }
  
  function _beforeTokenTransfer(address from, address to, uint256 tokenId) internal virtual override(ERC721, ERC721Enumerable) {
    super._beforeTokenTransfer(from, to, tokenId);
  }

  function supportsInterface(bytes4 interfaceId) public view virtual override(AccessControlEnumerable, ERC721, ERC721Enumerable, IERC165) returns (bool) {
    return super.supportsInterface(interfaceId);
  }

  // LAYER ZERO
    function estimateSendFee(uint16 _dstChainId, bytes calldata _toAddress, uint _tokenId, bool _useZro, bytes calldata _adapterParams) external view virtual override returns (uint nativeFee, uint zroFee) {
        // mock the payload for send()
        bytes memory payload = abi.encode(_toAddress, _tokenId);
        return lzEndpoint.estimateFees(_dstChainId, address(this), payload, _useZro, _adapterParams);
    }

    function sendFrom(address _from, uint16 _dstChainId, bytes calldata _toAddress, uint _tokenId, address payable _refundAddress, address _zroPaymentAddress, bytes calldata _adapterParam) external payable virtual override {
        _send(_from, _dstChainId, _toAddress, _tokenId, _refundAddress, _zroPaymentAddress, _adapterParam);
    }

    function send(uint16 _dstChainId, bytes calldata _toAddress, uint _tokenId, address payable _refundAddress, address _zroPaymentAddress, bytes calldata _adapterParam) external payable virtual override {
        _send(_msgSender(), _dstChainId, _toAddress, _tokenId, _refundAddress, _zroPaymentAddress, _adapterParam);
    }

    function _send(address _from, uint16 _dstChainId, bytes memory _toAddress, uint _tokenId, address payable _refundAddress, address _zroPaymentAddress, bytes calldata _adapterParam) internal virtual {
        require(_isApprovedOrOwner(_msgSender(), _tokenId), "ERC721: transfer caller is not owner nor approved");
        _beforeSend(_from, _dstChainId, _toAddress, _tokenId);

        bytes memory payload = abi.encode(_toAddress, _tokenId);
        _lzSend(_dstChainId, payload, _refundAddress, _zroPaymentAddress, _adapterParam);

        uint64 nonce = lzEndpoint.getOutboundNonce(_dstChainId, address(this));
        emit SendToChain(_from, _dstChainId, _toAddress, _tokenId, nonce);
        //_afterSend(_from, _dstChainId, _toAddress, _tokenId);
    }

    function _nonblockingLzReceive(uint16 _srcChainId, bytes memory _srcAddress, uint64 _nonce, bytes memory _payload) internal virtual override {
        //_beforeReceive(_srcChainId, _srcAddress, _payload);

        // decode and load the toAddress
        (bytes memory toAddress, uint tokenId) = abi.decode(_payload, (bytes, uint));
        address localToAddress;
        assembly {
            localToAddress := mload(add(toAddress, 20))
        }

        // if the toAddress is 0x0, convert to dead address, or it will get cached
        if (localToAddress == address(0x0)) localToAddress == address(0xdEaD);

        _afterReceive(_srcChainId, localToAddress, tokenId);

        emit ReceiveFromChain(_srcChainId, localToAddress, tokenId, _nonce);
    }

    function _beforeSend(
        address, /* _from */
        uint16, /* _dstChainId */
        bytes memory, /* _toAddress */
        uint _tokenId
    ) internal virtual {
        _burn(_tokenId);
    }

    // function _afterSend(
    //     address, /* _from */
    //     uint16, /* _dstChainId */
    //     bytes memory, /* _toAddress */
    //     uint /* _tokenId */
    // ) internal virtual {}

    // function _beforeReceive(
    //     uint16, /* _srcChainId */
    //     bytes memory, /* _srcAddress */
    //     bytes memory /* _payload */
    // ) internal virtual {}

    function _afterReceive(
        uint16, /* _srcChainId */
        address _toAddress,
        uint _tokenId
    ) internal virtual {
        _safeMint(_toAddress, _tokenId);
    }

}
// File: layerzero/contracts/token/onft/IONFT721.sol



// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import "@openzeppelin/contracts/token/ERC721/IERC721.sol";

/**
 * @dev Interface of the ONFT standard
 */
interface IONFT721 is IERC721 {
    /**
     * @dev estimate send token `_tokenId` to (`_dstChainId`, `_toAddress`)
     * _dstChainId - L0 defined chain id to send tokens too
     * _toAddress - dynamic bytes array which contains the address to whom you are sending tokens to on the dstChain
     * _tokenId - token Id to transfer
     * _useZro - indicates to use zro to pay L0 fees
     * _adapterParam - flexible bytes array to indicate messaging adapter services in L0
     */
    function estimateSendFee(uint16 _dstChainId, bytes calldata _toAddress, uint _tokenId, bool _useZro, bytes calldata _adapterParams) external view returns (uint nativeFee, uint zroFee);

    /**
     * @dev send token `_tokenId` to (`_dstChainId`, `_toAddress`)
     * `_toAddress` can be any size depending on the `dstChainId`.
     * `_zroPaymentAddress` set to address(0x0) if not paying in ZRO (LayerZero Token)
     * `_adapterParam` is a flexible bytes array to indicate messaging adapter services
     */
    function send(uint16 _dstChainId, bytes calldata _toAddress, uint _tokenId, address payable _refundAddress, address _zroPaymentAddress, bytes calldata _adapterParam) external payable;

    /**
     * @dev send token `_tokenId` to (`_dstChainId`, `_toAddress`) from `_from`
     * `_toAddress` can be any size depending on the `dstChainId`.
     * `_zroPaymentAddress` set to address(0x0) if not paying in ZRO (LayerZero Token)
     * `_adapterParam` is a flexible bytes array to indicate messaging adapter services
     */
    function sendFrom(address _from, uint16 _dstChainId, bytes calldata _toAddress, uint _tokenId, address payable _refundAddress, address _zroPaymentAddress, bytes calldata _adapterParam) external payable;

    /**
     * @dev Emitted when `_tokenId` are moved from the `_sender` to (`_dstChainId`, `_toAddress`)
     * `_nonce` is the outbound nonce from
     */
    event SendToChain(address indexed _sender, uint16 indexed _dstChainId, bytes indexed _toAddress, uint _tokenId, uint64 _nonce);

    /**
     * @dev Emitted when `_tokenId` are sent from `_srcChainId` to the `_toAddress` at this chain. `_nonce` is the inbound nonce.
     */
    event ReceiveFromChain(uint16 _srcChainId, address _toAddress, uint _tokenId, uint64 _nonce);
}

// File: layerzero/contracts/lzApp/NonblockingLzApp.sol



// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import "./LzApp.sol";

/*
 * the default LayerZero messaging behaviour is blocking, i.e. any failed message will block the channel
 * this abstract class try-catch all fail messages and store locally for future retry. hence, non-blocking
 * NOTE: if the srcAddress is not configured properly, it will still block the message pathway from (srcChainId, srcAddress)
 */
abstract contract NonblockingLzApp is LzApp {
    constructor(address _endpoint) LzApp(_endpoint) {}

    mapping(uint16 => mapping(bytes => mapping(uint => bytes32))) public failedMessages;

    event MessageFailed(uint16 _srcChainId, bytes _srcAddress, uint64 _nonce, bytes _payload);

    // overriding the virtual function in LzReceiver
    function _blockingLzReceive(uint16 _srcChainId, bytes memory _srcAddress, uint64 _nonce, bytes memory _payload) internal virtual override {
        // try-catch all errors/exceptions
        try this.nonblockingLzReceive(_srcChainId, _srcAddress, _nonce, _payload) {
            // do nothing
        } catch {
            // error / exception
            failedMessages[_srcChainId][_srcAddress][_nonce] = keccak256(_payload);
            emit MessageFailed(_srcChainId, _srcAddress, _nonce, _payload);
        }
    }

    function nonblockingLzReceive(uint16 _srcChainId, bytes memory _srcAddress, uint64 _nonce, bytes memory _payload) public virtual {
        // only internal transaction
        require(_msgSender() == address(this), "LzReceiver: caller must be LzApp");
        _nonblockingLzReceive(_srcChainId, _srcAddress, _nonce, _payload);
    }

    //@notice override this function
    function _nonblockingLzReceive(uint16 _srcChainId, bytes memory _srcAddress, uint64 _nonce, bytes memory _payload) internal virtual;

    function retryMessage(uint16 _srcChainId, bytes memory _srcAddress, uint64 _nonce, bytes calldata _payload) external payable virtual {
        // assert there is message to retry
        bytes32 payloadHash = failedMessages[_srcChainId][_srcAddress][_nonce];
        require(payloadHash != bytes32(0), "LzReceiver: no stored message");
        require(keccak256(_payload) == payloadHash, "LzReceiver: invalid payload");
        // clear the stored message
        failedMessages[_srcChainId][_srcAddress][_nonce] = bytes32(0);
        // execute the message. revert if it fails again
        this.nonblockingLzReceive(_srcChainId, _srcAddress, _nonce, _payload);
    }
}

// File: layerzero/contracts/lzApp/LzApp.sol



// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import "@openzeppelin/contracts/access/Ownable.sol";
import "../interfaces/ILayerZeroReceiver.sol";
import "../interfaces/ILayerZeroUserApplicationConfig.sol";
import "../interfaces/ILayerZeroEndpoint.sol";

/*
 * a generic LzReceiver implementation
 */
abstract contract LzApp is Ownable, ILayerZeroReceiver, ILayerZeroUserApplicationConfig {
    ILayerZeroEndpoint internal immutable lzEndpoint;

    mapping(uint16 => bytes) internal trustedRemoteLookup;

    event SetTrustedRemote(uint16 _srcChainId, bytes _srcAddress);

    constructor(address _endpoint) {
        lzEndpoint = ILayerZeroEndpoint(_endpoint);
    }

    function lzReceive(uint16 _srcChainId, bytes memory _srcAddress, uint64 _nonce, bytes memory _payload) external override {
        // lzReceive must be called by the endpoint for security
        require(_msgSender() == address(lzEndpoint));
        // if will still block the message pathway from (srcChainId, srcAddress). should not receive message from untrusted remote.
        require(_srcAddress.length == trustedRemoteLookup[_srcChainId].length && keccak256(_srcAddress) == keccak256(trustedRemoteLookup[_srcChainId]), "LzReceiver: invalid source sending contract");

        _blockingLzReceive(_srcChainId, _srcAddress, _nonce, _payload);
    }

    // abstract function - the default behaviour of LayerZero is blocking. See: NonblockingLzApp if you dont need to enforce ordered messaging
    function _blockingLzReceive(uint16 _srcChainId, bytes memory _srcAddress, uint64 _nonce, bytes memory _payload) internal virtual;

    function _lzSend(uint16 _dstChainId, bytes memory _payload, address payable _refundAddress, address _zroPaymentAddress, bytes memory _adapterParam) internal {
        require(trustedRemoteLookup[_dstChainId].length != 0, "LzSend: destination chain is not a trusted source.");
        lzEndpoint.send{value: msg.value}(_dstChainId, trustedRemoteLookup[_dstChainId], _payload, _refundAddress, _zroPaymentAddress, _adapterParam);
    }

    //---------------------------UserApplication config----------------------------------------
    function getConfig(uint16, uint16 _chainId, address, uint _configType) external view returns (bytes memory) {
        return lzEndpoint.getConfig(lzEndpoint.getSendVersion(address(this)), _chainId, address(this), _configType);
    }

    // generic config for LayerZero user Application
    function setConfig(uint16 _version, uint16 _chainId, uint _configType, bytes calldata _config) external override onlyOwner {
        lzEndpoint.setConfig(_version, _chainId, _configType, _config);
    }

    function setSendVersion(uint16 _version) external override onlyOwner {
        lzEndpoint.setSendVersion(_version);
    }

    function setReceiveVersion(uint16 _version) external override onlyOwner {
        lzEndpoint.setReceiveVersion(_version);
    }

    function forceResumeReceive(uint16 _srcChainId, bytes calldata _srcAddress) external override onlyOwner {
        lzEndpoint.forceResumeReceive(_srcChainId, _srcAddress);
    }

    // allow owner to set it multiple times.
    function setTrustedRemote(uint16 _srcChainId, bytes calldata _srcAddress) external onlyOwner {
        trustedRemoteLookup[_srcChainId] = _srcAddress;
        emit SetTrustedRemote(_srcChainId, _srcAddress);
    }

    function isTrustedRemote(uint16 _srcChainId, bytes calldata _srcAddress) external view returns (bool) {
        bytes memory trustedSource = trustedRemoteLookup[_srcChainId];
        return keccak256(trustedSource) == keccak256(_srcAddress);
    }

    //--------------------------- VIEW FUNCTION ----------------------------------------
    // interacting with the LayerZero Endpoint and remote contracts

    function getTrustedRemote(uint16 _chainId) external view returns (bytes memory) {
        return trustedRemoteLookup[_chainId];
    }

    function getLzEndpoint() external view returns (address) {
        return address(lzEndpoint);
    }
}

// File: layerzero/contracts/interfaces/ILayerZeroReceiver.sol



// SPDX-License-Identifier: MIT

pragma solidity >=0.5.0;

interface ILayerZeroReceiver {
    // @notice LayerZero endpoint will invoke this function to deliver the message on the destination
    // @param _srcChainId - the source endpoint identifier
    // @param _srcAddress - the source sending contract address from the source chain
    // @param _nonce - the ordered message nonce
    // @param _payload - the signed payload is the UA bytes has encoded to be sent
    function lzReceive(uint16 _srcChainId, bytes calldata _srcAddress, uint64 _nonce, bytes calldata _payload) external;
}

// File: layerzero/contracts/interfaces/ILayerZeroUserApplicationConfig.sol



// SPDX-License-Identifier: MIT

pragma solidity >=0.5.0;

interface ILayerZeroUserApplicationConfig {
    // @notice set the configuration of the LayerZero messaging library of the specified version
    // @param _version - messaging library version
    // @param _chainId - the chainId for the pending config change
    // @param _configType - type of configuration. every messaging library has its own convention.
    // @param _config - configuration in the bytes. can encode arbitrary content.
    function setConfig(uint16 _version, uint16 _chainId, uint _configType, bytes calldata _config) external;

    // @notice set the send() LayerZero messaging library version to _version
    // @param _version - new messaging library version
    function setSendVersion(uint16 _version) external;

    // @notice set the lzReceive() LayerZero messaging library version to _version
    // @param _version - new messaging library version
    function setReceiveVersion(uint16 _version) external;

    // @notice Only when the UA needs to resume the message flow in blocking mode and clear the stored payload
    // @param _srcChainId - the chainId of the source chain
    // @param _srcAddress - the contract address of the source contract at the source chain
    function forceResumeReceive(uint16 _srcChainId, bytes calldata _srcAddress) external;
}

// File: layerzero/contracts/interfaces/ILayerZeroEndpoint.sol



// SPDX-License-Identifier: MIT

pragma solidity >=0.5.0;

import "./ILayerZeroUserApplicationConfig.sol";

interface ILayerZeroEndpoint is ILayerZeroUserApplicationConfig {
    // @notice send a LayerZero message to the specified address at a LayerZero endpoint.
    // @param _dstChainId - the destination chain identifier
    // @param _destination - the address on destination chain (in bytes). address length/format may vary by chains
    // @param _payload - a custom bytes payload to send to the destination contract
    // @param _refundAddress - if the source transaction is cheaper than the amount of value passed, refund the additional amount to this address
    // @param _zroPaymentAddress - the address of the ZRO token holder who would pay for the transaction
    // @param _adapterParams - parameters for custom functionality. e.g. receive airdropped native gas from the relayer on destination
    function send(uint16 _dstChainId, bytes calldata _destination, bytes calldata _payload, address payable _refundAddress, address _zroPaymentAddress, bytes calldata _adapterParams) external payable;

    // @notice used by the messaging library to publish verified payload
    // @param _srcChainId - the source chain identifier
    // @param _srcAddress - the source contract (as bytes) at the source chain
    // @param _dstAddress - the address on destination chain
    // @param _nonce - the unbound message ordering nonce
    // @param _gasLimit - the gas limit for external contract execution
    // @param _payload - verified payload to send to the destination contract
    function receivePayload(uint16 _srcChainId, bytes calldata _srcAddress, address _dstAddress, uint64 _nonce, uint _gasLimit, bytes calldata _payload) external;

    // @notice get the inboundNonce of a lzApp from a source chain which could be EVM or non-EVM chain
    // @param _srcChainId - the source chain identifier
    // @param _srcAddress - the source chain contract address
    function getInboundNonce(uint16 _srcChainId, bytes calldata _srcAddress) external view returns (uint64);

    // @notice get the outboundNonce from this source chain which, consequently, is always an EVM
    // @param _srcAddress - the source chain contract address
    function getOutboundNonce(uint16 _dstChainId, address _srcAddress) external view returns (uint64);

    // @notice gets a quote in source native gas, for the amount that send() requires to pay for message delivery
    // @param _dstChainId - the destination chain identifier
    // @param _userApplication - the user app address on this EVM chain
    // @param _payload - the custom message to send over LayerZero
    // @param _payInZRO - if false, user app pays the protocol fee in native token
    // @param _adapterParam - parameters for the adapter service, e.g. send some dust native token to dstChain
    function estimateFees(uint16 _dstChainId, address _userApplication, bytes calldata _payload, bool _payInZRO, bytes calldata _adapterParam) external view returns (uint nativeFee, uint zroFee);

    // @notice get this Endpoint's immutable source identifier
    function getChainId() external view returns (uint16);

    // @notice the interface to retry failed message on this Endpoint destination
    // @param _srcChainId - the source chain identifier
    // @param _srcAddress - the source chain contract address
    // @param _payload - the payload to be retried
    function retryPayload(uint16 _srcChainId, bytes calldata _srcAddress, bytes calldata _payload) external;

    // @notice query if any STORED payload (message blocking) at the endpoint.
    // @param _srcChainId - the source chain identifier
    // @param _srcAddress - the source chain contract address
    function hasStoredPayload(uint16 _srcChainId, bytes calldata _srcAddress) external view returns (bool);

    // @notice query if the _libraryAddress is valid for sending msgs.
    // @param _userApplication - the user app address on this EVM chain
    function getSendLibraryAddress(address _userApplication) external view returns (address);

    // @notice query if the _libraryAddress is valid for receiving msgs.
    // @param _userApplication - the user app address on this EVM chain
    function getReceiveLibraryAddress(address _userApplication) external view returns (address);

    // @notice query if the non-reentrancy guard for send() is on
    // @return true if the guard is on. false otherwise
    function isSendingPayload() external view returns (bool);

    // @notice query if the non-reentrancy guard for receive() is on
    // @return true if the guard is on. false otherwise
    function isReceivingPayload() external view returns (bool);

    // @notice get the configuration of the LayerZero messaging library of the specified version
    // @param _version - messaging library version
    // @param _chainId - the chainId for the pending config change
    // @param _userApplication - the contract address of the user application
    // @param _configType - type of configuration. every messaging library has its own convention.
    function getConfig(uint16 _version, uint16 _chainId, address _userApplication, uint _configType) external view returns (bytes memory);

    // @notice get the send() LayerZero messaging library version
    // @param _userApplication - the contract address of the user application
    function getSendVersion(address _userApplication) external view returns (uint16);

    // @notice get the lzReceive() LayerZero messaging library version
    // @param _userApplication - the contract address of the user application
    function getReceiveVersion(address _userApplication) external view returns (uint16);
}

// File: contracts/BannersOracleLZ.sol



//SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;

import "@openzeppelin/contracts/token/ERC721/ERC721.sol";
import "@openzeppelin/contracts/token/ERC721/extensions/ERC721Enumerable.sol";
import "@openzeppelin/contracts/token/ERC721/extensions/ERC721Burnable.sol";
import "@openzeppelin/contracts/token/ERC721/extensions/ERC721URIStorage.sol";
import "@openzeppelin/contracts/access/AccessControlEnumerable.sol";
import "@openzeppelin/contracts/utils/Context.sol";
import "@openzeppelin/contracts/utils/Counters.sol";
import "../layerzero_v0/NonblockingReceiver.sol";

contract BannersOracleLZ is Context, AccessControlEnumerable, ERC721Enumerable, ERC721URIStorage, NonblockingReceiver{
  using Counters for Counters.Counter;
  Counters.Counter public _tokenIdTracker;

  string private _baseTokenURI;
  /// @notice Mint price
  uint private _price;
  /// @notice Max number of token mintable
  uint private _max;
  address _wallet;

  bool _openMint;
  bool _openWhitelistMint;

  event Migration(address indexed _to, uint indexed _tokenId);
  uint private gasForDestinationLzReceive = 350000;

  mapping(address => uint) private whitelist;

  constructor(string memory name, string memory symbol, string memory baseTokenURI, uint mintPrice, uint max, address wallet, address admin, address _lzEndpoint) ERC721(name, symbol) {
      _baseTokenURI = baseTokenURI;
      _price = mintPrice;
      _max = max;
      _wallet = wallet;
      _openMint = false;
      _openWhitelistMint = false;
      _setupRole(DEFAULT_ADMIN_ROLE, wallet);
      _setupRole(DEFAULT_ADMIN_ROLE, admin);

      endpoint = ILayerZeroEndpoint(_lzEndpoint);
  }

  function _baseURI() internal view virtual override returns (string memory) {
      return _baseTokenURI;
  }

  function setBaseURI(string memory baseURI) external {
    require(hasRole(DEFAULT_ADMIN_ROLE, _msgSender()), "BannersOracle: must have admin role to change base URI");
    _baseTokenURI = baseURI;
  }

  function setTokenURI(uint256 tokenId, string memory _tokenURI) external {
    require(hasRole(DEFAULT_ADMIN_ROLE, _msgSender()), "BannersOracle: must have admin role to change token URI");
    _setTokenURI(tokenId, _tokenURI);
  }

  /**
    @notice Method for updating minting fee
    @dev Only admin
    @param mintPrice uint the minting fee to set
    */
  function setPrice(uint mintPrice) external {
    require(hasRole(DEFAULT_ADMIN_ROLE, _msgSender()), "BannersOracle: must have admin role to change price");
    _price = mintPrice;
  }

  function setMax(uint max) external {
    require(hasRole(DEFAULT_ADMIN_ROLE, _msgSender()), "BannersOracle: must have admin role to change the max quantity");
    _max = max;
  }

  function setMint(bool openMint, bool openWhitelistMint) external {
    require(hasRole(DEFAULT_ADMIN_ROLE, _msgSender()), "BannersOracle: must have admin role to open/close mint");
    _openMint = openMint;
    _openWhitelistMint = openWhitelistMint;
  }

  function getPrice() public view returns (uint) {
    return _price;
  }

  function getMax() public view returns (uint) {
    return _max;
  }

  function mint(uint amount) public payable {
    require(amount <= 10, "BannersOracle: max of 10 Oracle Witches per mint");
    require(_openMint == true, "BannersOracle: minting is closed");
    require(msg.value == _price*amount, "BannersOracle: must send correct price");
    require(_tokenIdTracker.current() + amount <= _max, "BannersOracle: not enough Banners left to be minted");
    for(uint i = 0; i < amount; i++) {
      _mint(msg.sender, _tokenIdTracker.current());
      _tokenIdTracker.increment();
    }
    payable(_wallet).transfer(msg.value);
  }

  // function mintWhitelist() public payable {
  //   require(_openWhitelistMint == true, "BannersOracle: minting is closed");
  //   require(whitelist[msg.sender] > 0, "BannersOracle: user must be whitelisted to mint");
  //   require(msg.value == _presaleprice, "BannersOracle: must send correct price");
  //   require(_tokenIdTracker.current() < _max, "BannersOracle: all Oracle Witches have been minted");
    
  //   whitelist[msg.sender] = whitelist[msg.sender] - 1;
  //   _mint(msg.sender, _tokenIdTracker.current());
  //   _tokenIdTracker.increment();
  //   payable(_wallet).transfer(msg.value);
  // }

  function mintWhitelist(uint amount) public {
    require(_openWhitelistMint == true, "BannersOracle: minting is closed");
    require(whitelist[msg.sender] > 0, "BannersOracle: user must be whitelisted to mint");
    require(amount <= whitelist[msg.sender], "BannersOracle: user must have enough whitelist spots left to mint");
    require(_tokenIdTracker.current() + amount <= _max, "BannersOracle: not enough Banners left to be minted");

    for(uint i = 0; i < amount; i++) {
      _mint(msg.sender, _tokenIdTracker.current());
      whitelist[msg.sender] = whitelist[msg.sender] - 1;
      _tokenIdTracker.increment();
    }
  }

  function whitelistUser(address user, uint nbspot) public {
    require(hasRole(DEFAULT_ADMIN_ROLE, _msgSender()), "BannersOracle: must have admin role to whitelist address");
    whitelist[user] = nbspot;
  }

  function whitelistStatus(address user) public view returns(uint) {
    // if (whitelist[user] > 0) {
    //   return whitelist[user];
    // }
    // else {
    //   return 0;
    // }
    return whitelist[user];
  }

  function burn(uint256 tokenId) public{
    require(_isApprovedOrOwner(msg.sender, tokenId), "BannersOracle: must own the token to burn it");
    _burn(tokenId);
  }

  function _burn(uint256 tokenId) internal virtual override(ERC721, ERC721URIStorage) {
    return ERC721URIStorage._burn(tokenId);
  }

  function tokenURI(uint256 tokenId) public view override(ERC721, ERC721URIStorage) returns (string memory) {
    return ERC721URIStorage.tokenURI(tokenId);
  }
  
  function _beforeTokenTransfer(address from, address to, uint256 tokenId) internal virtual override(ERC721, ERC721Enumerable) {
    super._beforeTokenTransfer(from, to, tokenId);
  }

  function supportsInterface(bytes4 interfaceId) public view virtual override(AccessControlEnumerable, ERC721, ERC721Enumerable) returns (bool) {
    return super.supportsInterface(interfaceId);
  }

  // LAYER ZERO
  // This function transfers the nft from your address on the
  // source chain to the same address on the destination chain
  function traverseChains(uint16 _chainId, uint tokenId) public payable {
      require(msg.sender == ownerOf(tokenId), "You must own the token to traverse");
      require(trustedRemoteLookup[_chainId].length > 0, "This chain is currently unavailable for travel");

      // burn NFT, eliminating it from circulation on src chain
      _burn(tokenId);

      // abi.encode() the payload with the values to send
      bytes memory payload = abi.encode(msg.sender, tokenId);

      // encode adapterParams to specify more gas for the destination
      uint16 version = 1;
      bytes memory adapterParams = abi.encodePacked(version, gasForDestinationLzReceive);

      // get the fees we need to pay to LayerZero + Relayer to cover message delivery
      // you will be refunded for extra gas paid
      (uint messageFee, ) = endpoint.estimateFees(_chainId, address(this), payload, false, adapterParams);

      require(msg.value >= messageFee, "Error: msg.value not enough to cover messageFee. Send gas for message fees");

      endpoint.send{value: msg.value}(
          _chainId, // destination chainId
          trustedRemoteLookup[_chainId], // destination address of nft contract
          payload, // abi.encoded()'ed bytes
          payable(msg.sender), // refund address
          address(0x0), // 'zroPaymentAddress' unused for this
          adapterParams // txParameters
      );
  }

  // just in case this fixed variable limits us from future integrations
  function setGasForDestinationLzReceive(uint newVal) external onlyOwner {
      gasForDestinationLzReceive = newVal;
  }

  function _LzReceive(
      uint16 _srcChainId,
      bytes memory _srcAddress,
      uint64 _nonce,
      bytes memory _payload
  ) internal override {
      // decode
      (address toAddr, uint tokenId) = abi.decode(_payload, (address, uint));

      // mint the tokens back into existence on destination chain
      _safeMint(toAddr, tokenId);
  }


}