NFTMinterSolution

// SPDX-License-Identifier: GPL-3.0
//contract address = 0x9a27677ed55CfA9Fb84549032baf035b55df6A74
pragma solidity ^0.8.0;

//import ERC721URIStorage.sol from OpenZeppelin
import "@openzeppelin/contracts/token/ERC721/extensions/ERC721URIStorage.sol";

//create a contract NFTMINTERRINKEBY and inherit from ERC721URISTORAGE
contract NFTMinter is ERC721URIStorage{
 
//initialize variable for tracking _tokenID
 uint256 _tokenID;

 
// add constructor
  constructor() ERC721("NFTMinter", "NFTM") {
    _tokenID = 0;
 } 
 //create an event when NFT is minted args(tokenID, indexed NFTOwner, imageURL)
 event NFTMinted(uint256 _tokenId, address indexed NFTOwner, string imageURL);


 function getTokenID() public view returns(uint256){
     return _tokenID;
 }

function mintNFT(string memory _tokenURI) public {
     _mintNFT(msg.sender, _tokenID, _tokenURI);
     emit NFTMinted(_tokenID, msg.sender, _tokenURI);
     
}
 
 
 //memory = RAM (lesser gas) | storage = storing on the blockchain (more gas)
 
 //function _mintNFT() private
 function _mintNFT(address _to, uint256 _tokenId, string memory _tokenURI) private{
            _mint(_to, _tokenId);
            _setTokenURI(_tokenId, _tokenURI);
            _tokenID += 1;
        }

}