listen to multiple auction at the same time

[rabih9780]

Do you know what needs to be done to be able to listen on multiple auctions at the same time?

[Friss]

It's possible we could update the code that when you pass an array of auctionKey's that it can open multiple websockets under the hood. I'd welcome a PR to do that.

What I've been doing is just creating multiple instances of the listener for each auction I want to listen to.

This should work and the process would stick around until everything had ended but I haven't tested it.

const main = async () => {
  const listeners = [];

  const auctionKeys = ['1', '2', '3'];

  auctionKeys.forEach((auctionKey) => {
    const auctionPromise = new Promise((resolve, reject) => {
      const myAuction = CopartListener({ auctionKey });

      myAuction.on('connect', () => {
        console.log('Connected to auction');
      });
      myAuction.on('error', (...args) => {
        console.error(...args);
        reject(new Error('error'));
      );
      myAuction.on('BIDREC', ({ messageEventData: { LOTNO, CURBID } }) => {
        console.log(`A bid of $${CURBID} was placed on lot number ${LOTNO}`);
      });
      myAuction.on('end', ({ endMessage }) => {
        console.log(endMessage);
        resolve(endMessage);
      });
    });
    

    listeners.push(auctionPromise);
  })

  await Promise.all(listeners);
};

main();