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Rahat-ch/MetaDataNFT.sol

Created April 7, 2022 12:17
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  1. Rahat-ch created this gist Apr 7, 2022.
    29 changes: 29 additions & 0 deletions MetaDataNFT.sol
    View file
    Original file line number Diff line number Diff line change
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    // SPDX-License-Identifier: MIT
    pragma solidity ^0.8.0;


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

    contract MetaDataNFT is ERC721URIStorage {
    using Counters for Counters.Counter;
    Counters.Counter private _tokenIds;
    mapping (address => uint256) public mintTracker;

    constructor() ERC721("MetaDataNFTV2", "MDNFT2") {}

    function mint(string memory tokenURI) public returns (uint256){
    if(mintTracker[msg.sender] > 0){
    require(block.timestamp >= mintTracker[msg.sender], "Please wait 24 hours before minting again");
    }
    uint256 slowdown = block.timestamp + 1 days;
    _tokenIds.increment();

    uint256 newItemId = _tokenIds.current();
    _safeMint(msg.sender, newItemId);
    _setTokenURI(newItemId, tokenURI);
    mintTracker[msg.sender] = slowdown;

    return newItemId;
    }
    }