NFTContract/golearningland.sol at main · Go-Learning-Land/NFTContract · GitHub

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//          GO LEARNING LAND
//           /\/\/\/\/\/\/\
//          ,_---~~~~~----._
//   _,,_,*^____      _____``*g*\"*,
//  / __/ /'     ^.  /      \ ^@q   f
// [  @f | @))    |  | @))   l  0 _/
//  \`/   \~____ / __ \_____/    \
//   |           _l__l_           I
//   }          [______]           I
//   ]            | | |            |
//   ]             ~ ~             |
//   |            GLL              |
//    |       LETS GOOOO!         |

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.7;
//
import "@openzeppelin/contracts/access/Ownable.sol";
import "erc721a/contracts/ERC721A.sol";
import "@openzeppelin/contracts/utils/Strings.sol";

contract GoLearningLand is ERC721A, Ownable {
  using Strings for uint256;

  // "Private" Variables
  address private constant GOPHER1 = 0xf1281D9969b7Cf41063898c8e3BA3eF34589fEaa; //github.com/ErdemOzgen
  address private constant GOPHER2 = 0x8bBc7D4a0290BA41Ba1779F6177120ee9Ea1d3a1; //github.com/burakakyol
  address private constant GOPHER3 = 0xE58BeE8A50CB06a6738637a8080A105979F5913C; //github.com/okatilla
  address private constant GOPHER4 = 0xAe5803221d3583492F5C0051c94aC71DAbC92122; //github.com/duruer
  string private baseURI= "ipfs://bafybeiaqeikk443l45rc4zuwlra5oawddgr6y6oqkbs6xx7zop2o5yskpe/";
  string private uriSuffix = ".json";

  // Public Variables
  bool public started = true;
  bool public claimed = false;
  uint256 public constant MAX_SUPPLY = 3333;
  uint256 public constant TEAM_CLAIM_AMOUNT = 111;


  constructor() ERC721A("Go Learning Land", "GLL") {

  }


  function _startTokenId() internal view virtual override returns (uint256) {
      return 1;
  }

  function mint() external {
    require(started, "GLL mint is not available yet");
    require(totalSupply() < MAX_SUPPLY, "All Gophers has been minted");
    _safeMint(msg.sender, 1);
  }

  function teamClaim() external onlyOwner {
    require(!claimed, "Team already claimed");
    // claim for team
    _safeMint(GOPHER1, TEAM_CLAIM_AMOUNT);
    _safeMint(GOPHER2, TEAM_CLAIM_AMOUNT);
    _safeMint(GOPHER3, TEAM_CLAIM_AMOUNT);
    _safeMint(GOPHER4, TEAM_CLAIM_AMOUNT);
    claimed = true;
  }

  function setBaseURI(string memory baseURI_) external onlyOwner {
      baseURI = baseURI_;
  }

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

  function enableMint(bool mintStarted) external onlyOwner {
      started = mintStarted;
  }

   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(),
                        uriSuffix
                    )
                )
                : "";
    }
        function setUriSuffix(string memory _uriSuffix) public onlyOwner {
        uriSuffix = _uriSuffix;
    }
}