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

import "@openzeppelin/contracts/access/Ownable.sol";  
import "@openzeppelin/contracts/token/ERC721/ERC721.sol"; 
import "@openzeppelin/contracts/token/common/ERC2981.sol";
import "@chainlink/contracts/src/v0.8/shared/interfaces/AggregatorV3Interface.sol";
import "@openzeppelin/contracts/access/AccessControl.sol";

import 'abdk-libraries-solidity/ABDKMathQuad.sol';  
import "@openzeppelin/contracts/utils/Base64.sol";
import "./TicketContract.sol";

contract TicketMarketplace {

  struct Listing {
    uint256 tokenId;
    address seller;
    uint256 price;
  }

  event Listed(
    uint256 indexed tokenId, 
    address indexed seller, 
    uint256 price
  );

  event Sale(
    uint256 indexed tokenId,
    address indexed seller, 
    address indexed buyer,
    uint256 price
  );

  TicketContract public nft;

  mapping(uint256 => Listing) private listings;

  constructor(address _nftTicketContract) {
    nft = TicketContract(_nftTicketContract);
  }

  function listToken(uint256 tokenId, uint256 price) external {
    // Ensure token owner is msg.sender
    
    require(nft.ownerOf(tokenId) == msg.sender, "Not your token");
    // Ensure token not already listed
    require(listings[tokenId].price == 0, "Already listed");

    listings[tokenId] = Listing(
      tokenId,
      msg.sender, 
      price
    );

    emit Listed(tokenId, msg.sender, price);
  }

  function buyToken(uint256 tokenId) external payable {
    Listing memory listed = listings[tokenId];
    // Ensure listing exists
    require(listed.price > 0, "Not listed");
    // Ensure sent enough ETH
    require(msg.value >= listed.price, "Sent insufficient funds");

    //TODO pay royalties to SellTix and Tickets organization
    
    // Transfer NFT 
    nft.safeTransferFrom(listed.seller, msg.sender, tokenId);

    // Pay seller
    payable(listed.seller).transfer(listed.price);

    // Remove listing
    delete(listings[tokenId]);

    emit Sale(tokenId, listed.seller, msg.sender, listed.price);
  }

}