all files / contracts/examples/ VotingPrizeNFT.sol

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// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
 
import {ERC721URIStorage} from '@openzeppelin/contracts/token/ERC721/extensions/ERC721URIStorage.sol';
import {ERC721} from '@openzeppelin/contracts/token/ERC721/ERC721.sol';
import {Counters} from '@openzeppelin/contracts/utils/Counters.sol';
 
/// @title VotingPrizeNFT
contract VotingPrizeNFT is ERC721URIStorage {
    using Counters for Counters.Counter;
    Counters.Counter private _tokenIds;
 
    address public owner;
    address public voting;
    string public metadataURI;
 
    constructor(string memory _metadataURI) ERC721('VotingPrizeNFT', 'Prize') {
        owner = msg.sender;
        metadataURI = _metadataURI;
    }
 
    function setVotingAddress(address _voting) public {
        require(msg.sender == owner);
        voting = _voting;
    }
 
    function awardItem(address winner) public returns (uint256) {
        require(msg.sender == voting);
        uint256 newItemId = _tokenIds.current();
        _mint(winner, newItemId);
        _setTokenURI(newItemId, metadataURI);
 
        _tokenIds.increment();
        return newItemId;
    }
}