contract LunarTigerNFT is ERC721Enumerable, Ownable {
  using Strings for uint256;
  string public baseURI;
  string public baseExtension = ".json";
  uint256 public cost = 0.088 ether;
  uint256 public maxSupply = 8888;
  bool public paused = false;
  bool public revealed = false;
  string public notRevealedUri;
  constructor(
    string memory _initBaseURI,
    string memory _initNotRevealedUri
  ) ERC721("Lunar Tiger NFT", "LunarTiger") {
    setBaseURI(_initBaseURI);
    setNotRevealedURI(_initNotRevealedUri);
    mint(msg.sender, 1);
  }
  function _baseURI() internal view virtual override returns (string memory) {
    return baseURI;
  }
  function mint(address _to, uint256 _mintAmount) public payable {
    uint256 supply = totalSupply();
    require(!paused);
    require(_mintAmount > 0);
    require(supply + _mintAmount <= maxSupply);
    if (msg.sender != owner()) {
        require(msg.value >= cost * _mintAmount);
        
    }
    for (uint256 i = 1; i <= _mintAmount; i++) {
      _safeMint(_to, supply + i);
    }
  }
  function walletOfOwner(address _owner)
    public
    view
    returns (uint256[] memory)
  {
    uint256 ownerTokenCount = balanceOf(_owner);
    uint256[] memory tokenIds = new uint256[](ownerTokenCount);
    for (uint256 i; i < ownerTokenCount; i++) {
      tokenIds[i] = tokenOfOwnerByIndex(_owner, i);
    }
    return tokenIds;
  }
  function tokenURI(uint256 tokenId)
    public
    view
    virtual
    override
    returns (string memory)
  {
    require(
      _exists(tokenId),
      "ERC721Metadata: URI query for nonexistent token"
    );
    
    if(revealed == false) {
        return notRevealedUri;
    }
    string memory currentBaseURI = _baseURI();
    return bytes(currentBaseURI).length > 0
        ? string(abi.encodePacked(currentBaseURI, tokenId.toString(), baseExtension))
        : "";
  }
  //only owner
  function reveal() public onlyOwner {
      revealed = true;
  }
  
  function setCost(uint256 _newCost) public onlyOwner {
    cost = _newCost;
  }
  
  function setNotRevealedURI(string memory _notRevealedURI) public onlyOwner {
    notRevealedUri = _notRevealedURI;
  }
  function setBaseURI(string memory _newBaseURI) public onlyOwner {
    baseURI = _newBaseURI;
  }
  function setBaseExtension(string memory _newBaseExtension) public onlyOwner {
    baseExtension = _newBaseExtension;
  }
  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 reveal() public onlyOwner {
      revealed = true;
  }
//only owner