import { Job } from "bullmq";
import { getPocketBaseClient } from "../util/pocketbase";
import type { Vod } from "../types";

const TWEET_URL_REGEX =
  /^https?:\/\/(twitter\.com|x\.com)\/[A-Za-z0-9_]{1,15}\/status\/(\d+)(\?.*)?$/;

export function tweetIdToDate(id: string | number): Date {
  const snowflake = BigInt(id);
  const timestamp = (snowflake >> 22n) + 1288834974657n;
  return new Date(Number(timestamp));
}

export function getTweetId(url: string) {
  if (!TWEET_URL_REGEX.test(url)) {
    throw new Error(`Invalid tweet URL: ${url}`);
  }
  return url.split('/').at(-1)!;
}

export function getTweetDates(tweetUrls: string[]): Date[] {

  tweetUrls.forEach((url) => {
    if (!TWEET_URL_REGEX.test(url)) {
      throw new Error(`Invalid tweet URL: ${url}`);
    }
  });

  return tweetUrls
    .map(url => url.split('/').at(-1)!) // add ! if you’re sure it exists
    .map(tweetID => tweetIdToDate(tweetID));
}

export async function getApplicableVods() {
  const pb = await getPocketBaseClient()

  const results = await pb.collection('vods').getList(1, 3, {
    filter: "videoSrcB2 != '' && magnetLink = ''"
  })
  const vods = results.items;

  return vods;
}

/**
 * 
 * createMagnetLink
 * 
 * given a vod, scrape the tweet and populate the streamDate
 */
export async function createMagnetLinks(job: Job) {

  const pb = await getPocketBaseClient();
  const vods = await getApplicableVods();

  job.log(`getAnnounceUrlDetails found ${vods.length} vods in need of a streamDate.`)

  for (let i = 0; i < vods.length; i++) {
    const vod = vods[i];
    const magnetLink = await createMagnetLink(vod.videoSrcB2);

    await pb.collection('vods').update(vod.id, {
      magnetLink
    })

    const progress = Math.round(((i + 1) / vods.length) * 100);
    await job.updateProgress(progress);
  }
}


export async function createMagnetLink(vod: Vod) {

}