// SPDX-License-Identifier: MIT
pragma solidity ^0.7.0;

import "https://github.com/OpenZeppelin/openzeppelin-contracts/blob/release-v3.4/contracts/token/ERC721/ERC721.sol";
import "https://github.com/OpenZeppelin/openzeppelin-contracts/blob/release-v3.4/contracts/utils/Counters.sol";
import "https://github.com/OpenZeppelin/openzeppelin-contracts/blob/release-v3.4/contracts/access/Ownable.sol";

contract NFTbanet is ERC721, Ownable {
    using Counters for Counters.Counter;
    Counters.Counter private _tokenIds;

    constructor() ERC721("Demo BA.net Series NFT", "DNFT") {}

    event TokenCreated (
        uint256 tokenId,
        string tokenHash,
	address receiver
    );

    function mintNft(address receiver, string memory tokenURI, string memory tokenHash) external onlyOwner returns (uint256) {
        _tokenIds.increment();

        uint256 newNftTokenId = _tokenIds.current();
        _mint(receiver, newNftTokenId);
        _setTokenURI(newNftTokenId, tokenURI);

	emit TokenCreated(newNftTokenId, tokenHash, receiver);


        return newNftTokenId;
    }
}