contract MetaFrenchies is ERC721Enumerable, Ownable {
    using Strings for uint256;

    string public baseURI;
    string public baseExtension = ".json";
    uint256 public cost = 0.07 ether;
    uint256 public maxSupply = 4444;
    uint256 public maxMintAmount = 10;
    bool public paused = true;

    constructor(
        string memory _name,
        string memory _symbol,
        string memory _initBaseURI
    ) ERC721(_name, _symbol) {
        setBaseURI(_initBaseURI);
    }

    // internal
    function _baseURI() internal view virtual override returns (string memory) {
        return baseURI;
    }

    // public
    function mint(address _to, uint256 _mintAmount) public payable {
        uint256 supply = totalSupply();
        require(!paused, "Minting is Paused!");
        require(_mintAmount > 0);
        require(_mintAmount <= maxMintAmount);
        require(supply + _mintAmount <= maxSupply);

        if (msg.sender != owner()) {
            require(msg.value >= cost * _mintAmount);
        }

        for (uint256 i = 1; i <= _mintAmount; i++) {
            _safeMint(_to, supply + i);
        }
    }

    //   Airdrop
    function airdrop(address _to, uint256 _tokenId) public onlyOwner {
        require(
            _tokenId >= 4445 && _tokenId <= 4471,
            "Please input only legendry token ids"
        );
        _safeMint(_to, _tokenId);
    }

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

        string memory currentBaseURI = _baseURI();
        return
            bytes(currentBaseURI).length > 0
                ? string(
                    abi.encodePacked(
                        currentBaseURI,
                        tokenId.toString(),
                        baseExtension
                    )
                )
                : "";
    }

    function setBaseURI(string memory _newBaseURI) public onlyOwner {
        baseURI = _newBaseURI;
    }

    function pause(bool _state) public onlyOwner {
        paused = _state;
    }

    function withdraw() public payable onlyOwner {
        (bool os, ) = payable(owner()).call{value: address(this).balance}("");
        require(os);
    }
}
function mint(address _to, uint256 _mintAmount) public payable {
        uint256 supply = totalSupply();
        require(!paused, "Minting is Paused!");
        require(_mintAmount > 0);
        require(_mintAmount <= maxMintAmount);
        require(supply + _mintAmount <= maxSupply);

        if (msg.sender != owner()) {
            require(msg.value >= cost * _mintAmount);
        }

        for (uint256 i = 1; i <= _mintAmount; i++) {
            _safeMint(_to, supply + i);
        }
    }
// public