// SPDX-License-Identifier: MIT
pragma solidity ^0.8.4;

import "@openzeppelin/contracts/token/ERC721/ERC721.sol";
import "@openzeppelin/contracts/access/Ownable.sol";
import "./LTNTFont.sol";
import "base64-sol/base64.sol";


//////////////////////////////////
//
//
// LTNT
// Passport NFTs for Latent Works
//
//
//////////////////////////////////


/// @title LTNT
/// @author troels_a

contract LTNT is ERC721, Ownable {
    
    struct Param {
        uint _uint;
        address _address;
        string _string;
        bool _bool;
    }

    struct IssuerInfo {
        string name;
        string image;
    }

    struct Issuer {
        address location;
        Param param;
    }

    event Issued(uint indexed id, address indexed to);
    event Stamped(uint indexed id, address indexed stamper);

    LTNT_Meta private _ltnt_meta;

    address[] private _issuers; ///@dev array of addresses registered as issuers
    mapping(uint => mapping(address => bool)) private _stamps; ///@dev (ltnt => (issuer => is stamped?))
    mapping(uint => mapping(address => Param)) private _params; ///@dev (ltnt => (issuer => stamp parameters));
    mapping(uint => Issuer) private _issuer_for_id; ///@dev (ltnt => issuer) - the Issuer for a given LTNT
    
    uint private _ids; ///@dev LTNT _id counter

    /// @dev pass address of onchain fonts to the constructor
    constructor(address regular_, address italic_) ERC721("Latents", "LTNT"){

        LTNT_Meta ltnt_meta_ = new LTNT_Meta(address(this), regular_, italic_);
        _ltnt_meta = LTNT_Meta(address(ltnt_meta_));

    }




    /// @notice Require a given address to be a registered issuer
    /// @param caller_ the address to check for issuer privilegies
    function _reqOnlyIssuer(address caller_) private view {
        require(isIssuer(caller_), 'ONLY_ISSUER');
    }



    /// @notice Issue a token to the address
    /// @param to_ the address to issue the LTNT to
    /// @param param_ a Param struct of parameters associated with the token
    /// @param stamp_ boolean determining wether the newly issued LTNT should be stamped by the issuer
    /// @return uint the id of the newly issued LTNT
    function issueTo(address to_, Param memory param_, bool stamp_) public returns(uint){ _reqOnlyIssuer(msg.sender);
        
        _ids++;
        _safeMint(to_, _ids);
        _issuer_for_id[_ids] = Issuer(msg.sender, param_);

        emit Issued(_ids, to_);
        
        if(stamp_)
            _stamp(_ids, msg.sender, param_);

        return _ids;

    }



    /// @dev Lets a registered issuer stamp a given LTNT
    /// @param id_ the ID of the LTNT to stamp
    /// @param param_ a Param struct with any associated params
    function stamp(uint id_, Param memory param_) public { _reqOnlyIssuer(msg.sender);
        _stamp(id_, msg.sender, param_);
    }



    /// @dev internal stamping mechanism
    /// @param id_ the id of the LTNT to stamp
    /// @param issuer_ the address of the issuer stamping the LTNT
    /// @param param_ a Param struct with stamp parameters
    function _stamp(uint id_, address issuer_, Param memory param_) private {
        _stamps[id_][issuer_] = true;
        _params[id_][issuer_] = param_;
        emit Stamped(_ids, issuer_);
    }

    /// @dev checks if a given id_ is stamped by address_
    /// @param id_ the ID of the LTNT to check
    /// @param address_ the address of the stamper
    /// @return bool indicating wether LTNT is stamped
    function hasStamp(uint id_, address address_) public view returns(bool){
        return _stamps[id_][address_];
    }

    /// @dev get params for a given stamp on a LTNT
    /// @param id_ the id of the LTNT
    /// @param address_ the address of the stamper
    /// @return Param the param to return
    function getStampParams(uint id_, address address_) public view returns(Param memory){
        return _params[id_][address_];
    }

    /// @dev Get the addresses of the issuers that have stamped a given LTNT
    /// @param id_ the ID of the LTNT to fetch stamps for
    /// @return addresses an array of issuer addresses that have stamped the LTNT
    function getStamps(uint id_) public view returns(address[] memory){
        
        // First count the stamps
        uint count;
        for(uint i = 0; i < _issuers.length; i++){
            if(_stamps[id_][_issuers[i]])
                ++count;
        }

        // Init a stamps_ array with the right length from count_
        address[] memory stamps_ = new address[](count);

        // Loop over the issuers and save stampers in stamps_
        count = 0;
        for(uint i = 0; i < _issuers.length; i++){
            if(_stamps[id_][_issuers[i]]){
                stamps_[count] = _issuers[i];
                ++count;
            }
        }

        return stamps_;

    }

    /// @dev list all issuer addresses
    /// @return addresses list of all issuers
    function getIssuers() public view returns(address[] memory){
        return _issuers;
    }

    /// @dev get the issuer of a LTNT
    function getIssuerFor(uint id_) public view returns(LTNT.Issuer memory){
        return _issuer_for_id[id_];
    }

    /// @dev set the meta contract
    /// @param address_ the address of the meta contract
    function setMetaContract(address address_) public onlyOwner {
        _ltnt_meta = LTNT_Meta(address_);
    }

    /// @dev get the meta contract
    /// @return LTNT_Meta the meta contract currently in use
    function getMetaContract() public view returns(LTNT_Meta) {
        return _ltnt_meta;
    }

    /// @notice register an issuer address
    /// @param address_ the address of the issuer to add
    function addIssuer(address address_) public onlyOwner {
        _issuers.push(address_);
    }
    

    /// @notice determine if an address is a LW project
    /// @param address_ the address of the issuer
    /// @return bool indicating wether the address is an issuer or not
    function isIssuer(address address_) public view returns(bool){
        for(uint i = 0; i < _issuers.length; i++) {
            if(_issuers[i] == address_)
                return true;
        }
        return false;
    }


    /// @notice the ERC721 tokenURI for a given LTNT
    /// @param id_ the id of the LTNT
    /// @return json_ base64 encoded data URI containing the JSON metadata
    function tokenURI(uint id_) public view override returns(string memory json_){
        return _ltnt_meta.getJSON(id_, true);
    }


}


/// @title A title that should describe the contract/interface
/// @author troels_a
/// @dev Handles meta for this contract
contract LTNT_Meta {

    LTNT public immutable _ltnt;

    ///@dev latent fonts
    XanhMonoRegularLatin public immutable _xanh_regular;
    XanhMonoItalicLatin public immutable _xanh_italic;

    constructor(address ltnt_, address regular_, address italic_){

        _ltnt = LTNT(ltnt_);
        _xanh_regular = XanhMonoRegularLatin(regular_);
        _xanh_italic = XanhMonoItalicLatin(italic_);

    }

    /// @notice return image string for id_
    /// @param id_ the id of the LTNT to retrieve the image for
    /// @param encode_ encode output as base64 uri
    /// @return string the image string
    function getImage(uint id_, bool encode_) public view returns(string memory){

        LTNT.Issuer memory issuer_for_id_ = _ltnt.getIssuerFor(id_);
        LTNT.IssuerInfo memory issuer_info_ = LTNTIssuer(issuer_for_id_.location).issuerInfo(id_, issuer_for_id_.param);
        LTNT.IssuerInfo memory stamper_;
        LTNT.Param memory stamp_param_;
        address[] memory issuers_ = _ltnt.getIssuers();

        bytes memory stamps_svg_;
        string memory delay_;
        uint stamp_count_;
        bool has_stamp_;

        for(uint i = 0; i < issuers_.length; i++) {

            delay_ = Strings.toString(i*150);
            stamp_param_ = _ltnt.getStampParams(id_,issuers_[i]);
            stamper_ = LTNTIssuer(issuers_[i]).issuerInfo(id_, stamp_param_);
            has_stamp_ = _ltnt.hasStamp(id_, issuers_[i]);

            stamps_svg_ = abi.encodePacked(stamps_svg_, '<text class="txt italic" fill-opacity="0" y="',Strings.toString(25*i),'">',stamper_.name,' <animate attributeName="fill-opacity" values="0;',has_stamp_ ? '1' : '0.4','" dur="500ms" repeatCount="1" begin="',delay_,'ms" fill="freeze"/></text>');
            if(has_stamp_)
                ++stamp_count_;

        }

        bytes memory image_;
        image_ = abi.encodePacked(
            '<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 600 1000" preserveAspectRatio="xMinYMin meet">',
                '<defs><style>', _xanh_regular.fontFace(), _xanh_italic.fontFace(),' .txt {font-family: "Xanh Mono"; font-size:20px; font-weight: normal; letter-spacing: 0.01em; fill: white;} .italic {font-style: italic;} .large {font-size: 55px;} .small {font-size: 12px;}</style><rect ry="30" rx="30" id="bg" height="1000" width="600" fill="black"/></defs>',
                '<use href="#bg"/>',
                '<g transform="translate(65, 980) rotate(-90)">',
                    '<text class="txt large italic">Latent Works</text>',
                '</g>',
                '<g transform="translate(537, 21) rotate(90)">',
                    '<text class="txt large italic">LTNT #',Strings.toString(id_),'</text>',
                '</g>',
                '<g transform="translate(517, 22) rotate(90)">',
                    '<text class="txt small">Issued by ',issuer_info_.name,unicode' · ', Strings.toString(stamp_count_) , stamp_count_ > 1 ? ' stamps' : ' stamp', '</text>',
                '</g>'
                '<g transform="translate(25, 25)">',
                    '<image width="300" href="', issuer_info_.image, '"/>',
                '</g>',
                '<g transform="translate(343, 41)">',
                    stamps_svg_,
                '</g>',
                '<g transform="translate(509, 980)">',
                    '<text class="txt small">latent.works</text>',
                '</g>',
            '</svg>'
        );

        if(encode_)
            image_ = abi.encodePacked('data:image/svg+xml;base64,', Base64.encode(image_));

        return string(image_);

    }


    /// @notice return base64 encoded JSON metadata for id_
    /// @param id_ the id of the LTNT to retrieve the image for
    /// @param encode_ encode output as base64 uri
    /// @return string the image string
    function getJSON(uint id_, bool encode_) public view returns(string memory) {
        
        LTNT.Issuer memory issuer_for_id_ = _ltnt.getIssuerFor(id_);
        LTNT.IssuerInfo memory issuer_info_ = LTNTIssuer(issuer_for_id_.location).issuerInfo(id_, issuer_for_id_.param);

        bytes memory json_ = abi.encodePacked(
            '{',
                '"name":"LTNT #',Strings.toString(id_),'", ',
                '"image": "', getImage(id_, true),'", ',
                '"description": "latent.works",',
                '"attributes": [',
                    '{"trait_type": "Stamps", "value": ',Strings.toString(_ltnt.getStamps(id_).length),'},',
                    '{"trait_type": "Issuer", "value": "', issuer_info_.name, '"}',
                ']',
            '}'
        );

        if(encode_)
            json_ = abi.encodePacked('data:application/json;base64,', Base64.encode(json_));
        
        return string(json_);

    }

}


/// @title LTNTIssuer
/// @author troels_a
/// @dev LTNTIssuers implement this contract and use issuerInfo to pass info to LTNT main contract
abstract contract LTNTIssuer {
    function issuerInfo(uint id_, LTNT.Param memory param_) external virtual view returns(LTNT.IssuerInfo memory);
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.6.0) (token/ERC721/ERC721.sol)

pragma solidity ^0.8.0;

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

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

    // Token name
    string private _name;

    // Token symbol
    string private _symbol;

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

    /**
     * @dev Transfers `tokenId` from `from` to `to`.
     *  As opposed to {transferFrom}, this imposes no restrictions on msg.sender.
     *
     * Requirements:
     *
     * - `to` cannot be the zero address.
     * - `tokenId` token must be owned by `from`.
     *
     * Emits a {Transfer} event.
     */
    function _transfer(
        address from,
        address to,
        uint256 tokenId
    ) internal virtual {
        require(ERC721.ownerOf(tokenId) == from, "ERC721: transfer from incorrect owner");
        require(to != address(0), "ERC721: transfer to the zero address");

        _beforeTokenTransfer(from, to, tokenId);

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

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

        emit Transfer(from, to, tokenId);

        _afterTokenTransfer(from, to, tokenId);
    }

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

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

// 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);
    }
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.2;

contract XanhMonoRegularLatin {
    function fontFace() public pure returns(string memory){
        return "@font-face { font-family: 'Xanh Mono'; font-style: normal; font-weight: 400; font-display: swap; src: url(data:font/woff2;base64,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) format('woff2'); unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+2000-206F, U+2074, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD; }";
    }
}

contract XanhMonoItalicLatin {
    function fontFace() public pure returns(string memory){
        return "@font-face { font-family: 'Xanh Mono'; font-style: italic; font-weight: 400; font-display: swap; src: url(data:font/woff2;base64,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) format('woff2'); unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+2000-206F, U+2074, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD; }";
    }
}

// SPDX-License-Identifier: MIT

pragma solidity >=0.6.0;

/// @title Base64
/// @author Brecht Devos - <[email protected]>
/// @notice Provides functions for encoding/decoding base64
library Base64 {
    string internal constant TABLE_ENCODE = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/';
    bytes  internal constant TABLE_DECODE = hex"0000000000000000000000000000000000000000000000000000000000000000"
                                            hex"00000000000000000000003e0000003f3435363738393a3b3c3d000000000000"
                                            hex"00000102030405060708090a0b0c0d0e0f101112131415161718190000000000"
                                            hex"001a1b1c1d1e1f202122232425262728292a2b2c2d2e2f303132330000000000";

    function encode(bytes memory data) internal pure returns (string memory) {
        if (data.length == 0) return '';

        // load the table into memory
        string memory table = TABLE_ENCODE;

        // multiply by 4/3 rounded up
        uint256 encodedLen = 4 * ((data.length + 2) / 3);

        // add some extra buffer at the end required for the writing
        string memory result = new string(encodedLen + 32);

        assembly {
            // set the actual output length
            mstore(result, encodedLen)

            // prepare the lookup table
            let tablePtr := add(table, 1)

            // input ptr
            let dataPtr := data
            let endPtr := add(dataPtr, mload(data))

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

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

                // write 4 characters
                mstore8(resultPtr, mload(add(tablePtr, and(shr(18, input), 0x3F))))
                resultPtr := add(resultPtr, 1)
                mstore8(resultPtr, mload(add(tablePtr, and(shr(12, input), 0x3F))))
                resultPtr := add(resultPtr, 1)
                mstore8(resultPtr, mload(add(tablePtr, and(shr( 6, input), 0x3F))))
                resultPtr := add(resultPtr, 1)
                mstore8(resultPtr, mload(add(tablePtr, and(        input,  0x3F))))
                resultPtr := add(resultPtr, 1)
            }

            // padding with '='
            switch mod(mload(data), 3)
            case 1 { mstore(sub(resultPtr, 2), shl(240, 0x3d3d)) }
            case 2 { mstore(sub(resultPtr, 1), shl(248, 0x3d)) }
        }

        return result;
    }

    function decode(string memory _data) internal pure returns (bytes memory) {
        bytes memory data = bytes(_data);

        if (data.length == 0) return new bytes(0);
        require(data.length % 4 == 0, "invalid base64 decoder input");

        // load the table into memory
        bytes memory table = TABLE_DECODE;

        // every 4 characters represent 3 bytes
        uint256 decodedLen = (data.length / 4) * 3;

        // add some extra buffer at the end required for the writing
        bytes memory result = new bytes(decodedLen + 32);

        assembly {
            // padding with '='
            let lastBytes := mload(add(data, mload(data)))
            if eq(and(lastBytes, 0xFF), 0x3d) {
                decodedLen := sub(decodedLen, 1)
                if eq(and(lastBytes, 0xFFFF), 0x3d3d) {
                    decodedLen := sub(decodedLen, 1)
                }
            }

            // set the actual output length
            mstore(result, decodedLen)

            // prepare the lookup table
            let tablePtr := add(table, 1)

            // input ptr
            let dataPtr := data
            let endPtr := add(dataPtr, mload(data))

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

            // run over the input, 4 characters at a time
            for {} lt(dataPtr, endPtr) {}
            {
               // read 4 characters
               dataPtr := add(dataPtr, 4)
               let input := mload(dataPtr)

               // write 3 bytes
               let output := add(
                   add(
                       shl(18, and(mload(add(tablePtr, and(shr(24, input), 0xFF))), 0xFF)),
                       shl(12, and(mload(add(tablePtr, and(shr(16, input), 0xFF))), 0xFF))),
                   add(
                       shl( 6, and(mload(add(tablePtr, and(shr( 8, input), 0xFF))), 0xFF)),
                               and(mload(add(tablePtr, and(        input , 0xFF))), 0xFF)
                    )
                )
                mstore(resultPtr, shl(232, output))
                resultPtr := add(resultPtr, 3)
            }
        }

        return result;
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.6.0) (token/ERC721/IERC721.sol)

pragma solidity ^0.8.0;

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

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

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

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

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

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

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

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

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

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

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

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

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

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.6.0) (token/ERC721/IERC721Receiver.sol)

pragma solidity ^0.8.0;

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

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

pragma solidity ^0.8.0;

import "../IERC721.sol";

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

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

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

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

pragma solidity ^0.8.1;

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

        return account.code.length > 0;
    }

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

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

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

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

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

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

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

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

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

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

    /**
     * @dev 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);
            }
        }
    }
}

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

pragma solidity ^0.8.0;

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

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

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

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

pragma solidity ^0.8.0;

import "./IERC165.sol";

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

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts 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);
}