white elephant gift exchange 30 minute coding challenge as a solidity smart contract

whiteElephant.sol

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.20;

import "@openzeppelin/contracts/token/ERC721/ERC721.sol";
import "@openzeppelin/contracts/access/Ownable.sol";

contract Tickets is ERC721, Ownable {
    
    uint ticketNumber = 0;
    uint giftingTime = 1703462400;

    bool[] giftList;
    mapping(uint giftListPresent => address giftAddress) giftsAddresses;
    mapping(uint giftListPresent => uint giftListPresentID) giftsOriginIds; 
    
    constructor(address initialOwner)
        ERC721("tickets", "TICKET")
        Ownable(initialOwner)
    {}

    function _baseURI() internal pure override returns (string memory) {
        return "https://i.imgur.com/10m8z79.png";
    }


    function openPresent(uint burnTicketId) external{
        require(block.timestamp > giftingTime);
        //make sure the msg sender has a ticket
        require(ownerOf(burnTicketId) == msg.sender);
        //burn a ticket
        safeTransferFrom(msg.sender, address(0), burnTicketId);

        //get the last present in the line and take it!
        uint giftId =  block.number % giftList.length;
        //send giftList[giftID]
        address giftNFTAddress = giftsAddresses[giftId];
        uint giftsOriginId = giftsOriginIds[giftId];
        giftList.pop();

        //yeet
        ERC721(giftNFTAddress).transferFrom(address(this), msg.sender, giftsOriginId);
        
    }

    function depositPresent(address nftContract, uint id) external {
        require(block.timestamp < giftingTime);

        //move erc721 present to this contract
        ERC721(nftContract).transferFrom(msg.sender, address(this), id);

        //add it to the list
        giftsAddresses[giftList.length] = nftContract;
        giftsOriginIds[giftList.length] = id;
        giftList.push(true);
        

        //give the msg sender a ticket: _safeMint(to, tokenId);
        _safeMint(msg.sender, ticketNumber);
        ticketNumber += 1;

    }
}