How to Monitor Auctions

import { XGAConnection } from './connection.js'; // Assuming you have this
import { ethers } from 'ethers';

export class AuctionMonitor {
  private connection: XGAConnection;
  private auctioneerAddress: string;

  constructor(connection: XGAConnection, auctioneerAddress: string) {
    this.connection = connection;
    this.auctioneerAddress = auctioneerAddress;
  }

  async monitorAuction(slot: number): Promise<void> {
    console.log(`Monitoring auction for slot ${slot}...`);

    const provider = this.connection.getProvider();

    // Set up event listener for auction events
    const contract = new ethers.Contract(
      this.auctioneerAddress,
      [
        "event AuctionFinalized(uint256 indexed slot, uint256 clearingPrice)",
        "event BidAccepted(uint256 indexed slot, address indexed bidder, uint256 quantity)",
      ],
      provider
    );

    // Listen for auction finalization
    contract.on("AuctionFinalized", (auctionSlot, clearingPrice) => {
      if (auctionSlot.toString() === slot.toString()) {
        console.log(`Auction ${slot} finalized!`);
        console.log(`Clearing price: ${ethers.formatEther(clearingPrice)} ETH per unit`);
      }
    });

    // Listen for bid acceptance
    contract.on("BidAccepted", (auctionSlot, bidder, quantity) => {
      if (auctionSlot.toString() === slot.toString()) {
        const myAddress = this.connection.getWallet().address;
        if (bidder.toLowerCase() === myAddress.toLowerCase()) {
          console.log(`Your bid was accepted!`);
          console.log(`Quantity won: ${quantity.toString()} units`);
        }
      }
    });

    console.log('Event listeners set up. Monitoring...');
  }

  async getBidResults(slot: number): Promise<void> {
    // This would query the contract for final results
    console.log(`Checking results for slot ${slot}...`);

    // Implementation would depend on actual contract interface
    // For tutorial purposes, we'll simulate
    setTimeout(() => {
      console.log('Bid results:');
      console.log('- Status: Auction completed');
      console.log('- Your bid: Partially filled');
      console.log('- Quantity won: 1 unit');
      console.log('- Final price: 0.008 ETH per unit');
    }, 2000);
  }
}

import { createConnection } from './connection.js'; // Assuming you have this
import { AuctionMonitor } from './monitoring.js';

async function runMonitoringExample(slot: number): Promise<void> {
  const connection = await createConnection();
  const auctioneerAddress = "0x86Bc75A43704E38f0FD94BdA423C50071fE17c99"; // Replace with actual address

  const monitor = new AuctionMonitor(connection, auctioneerAddress);
  await monitor.monitorAuction(slot);

  // Check results after some time
  setTimeout(async () => {
    await monitor.getBidResults(slot);
    process.exit(0);
  }, 10000);
}

// Example: monitor slot 12345
runMonitoringExample(12345).catch(console.error);