KIP17MetadataMintable.sol

pragma solidity ^0.5.0;

import "./KIP17Metadata.sol";
import "./roles/MinterRole.sol";
import "./introspection/KIP13.sol";


/**
 * @title KIP17MetadataMintable
 * @dev KIP17 minting logic with metadata.
 */
contract KIP17MetadataMintable is KIP13, KIP17, KIP17Metadata, MinterRole {
    /*
     *     bytes4(keccak256('mintWithTokenURI(address,uint256,string)')) == 0x50bb4e7f
     *     bytes4(keccak256('isMinter(address)')) == 0xaa271e1a
     *     bytes4(keccak256('addMinter(address)')) == 0x983b2d56
     *     bytes4(keccak256('renounceMinter()')) == 0x98650275
     *
     *     => 0x50bb4e7f ^ 0xaa271e1a ^ 0x983b2d56 ^ 0x98650275 == 0xfac27f46
     */
    bytes4 private constant _INTERFACE_ID_KIP17_METADATA_MINTABLE = 0xfac27f46;

    /**
     * @dev Constructor function.
     */
    constructor () public {
        // register the supported interface to conform to KIP17Mintable via KIP13
        _registerInterface(_INTERFACE_ID_KIP17_METADATA_MINTABLE);
    }

    /**
     * @dev Function to mint tokens.
     * @param to The address that will receive the minted tokens.
     * @param tokenId The token id to mint.
     * @param tokenURI The token URI of the minted token.
     * @return A boolean that indicates if the operation was successful.
     */
    function mintWithTokenURI(address to, uint256 tokenId, string memory tokenURI) public onlyMinter returns (bool) {
        _mint(to, tokenId);
        _setTokenURI(tokenId, tokenURI);
        return true;
    }
}