SuperfluidETHAmsterdam22.sol

// SPDX-License-Identifier: MIT
pragma solidity 0.8.10;

import "@openzeppelin/contracts/token/ERC721/ERC721.sol";
import "@openzeppelin/contracts/token/ERC721/extensions/ERC721URIStorage.sol";
import "@openzeppelin/contracts/access/AccessControl.sol";
import "@openzeppelin/contracts/utils/Counters.sol";

contract SuperfluidETHAmsterdam22 is ERC721, ERC721URIStorage, AccessControl {
    using Counters for Counters.Counter;

    bytes32 public constant MINTER_ROLE = keccak256("MINTER_ROLE");
    Counters.Counter private _tokenIdCounter;

    constructor() ERC721("SuperfluidETHAmsterdam22", "SAMS22") {
        _grantRole(DEFAULT_ADMIN_ROLE, msg.sender);
        _grantRole(MINTER_ROLE, msg.sender);
        _tokenIdCounter.increment();
    }

    function safeMint(address to, string memory uri) public onlyRole(MINTER_ROLE) {
        uint256 tokenId = _tokenIdCounter.current();
        _tokenIdCounter.increment();
        _safeMint(to, tokenId);
        _setTokenURI(tokenId, uri);
    }

    function batchSafeMint(address to, string[] memory uris) public onlyRole(MINTER_ROLE) {
        for(uint256 i = 0; i < uris.length; i++) {
            safeMint(to, uris[i]);
        }
    }

    function batchTransfer(address[] calldata to, uint256[] calldata tokenIds) public {
        require(to.length == tokenIds.length, "wrong arrary size");
        for(uint256 i = 0; i < to.length; i++) {
            safeTransferFrom(msg.sender, to[i], tokenIds[i]);
        }
    }

    function safeTransfer(address to, uint256 tokenId) public {
        safeTransferFrom(msg.sender, to, tokenId);
    }

    // The following functions are overrides required by Solidity.

    function _burn(uint256 tokenId) internal override(ERC721, ERC721URIStorage) {
        super._burn(tokenId);
    }

    function tokenURI(uint256 tokenId)
        public
        view
        override(ERC721, ERC721URIStorage)
        returns (string memory)
    {
        return super.tokenURI(tokenId);
    }

    function supportsInterface(bytes4 interfaceId)
        public
        view
        override(ERC721, AccessControl)
        returns (bool)
    {
        return super.supportsInterface(interfaceId);
    }
}