import bytes from 'bytes';
import * as cheerio from 'cheerio';
import { NotFoundError } from '../error';
import { Context, Format, Meta, UrlResult } from '../types';
import { extractUrlFromPacked, guessHeightFromPlaylist } from '../utils';
import { Extractor } from './Extractor';

export class Dropload extends Extractor {
  public readonly id = 'dropload';

  public readonly label = 'Dropload';

  public override readonly ttl: number = 10800000; // 3h

  public supports(_ctx: Context, url: URL): boolean {
    return null !== url.host.match(/dropload/);
  }

  public override readonly normalize = (url: URL): URL => new URL(url.href.replace('/d/', '/').replace('/e/', '/').replace('/embed-', '/'));

  protected async extractInternal(ctx: Context, url: URL, meta: Meta): Promise<UrlResult[]> {
    const headers = { Referer: meta.referer ?? url.href };

    const html = await this.fetcher.text(ctx, url, { headers });

    if (html.includes('File Not Found') || html.includes('Pending in queue')) {
      throw new NotFoundError();
    }

    const playlistUrl = extractUrlFromPacked(html, [/sources:\[{file:"(.*?)"/]);

    const heightMatch = html.match(/\d{3,}x(\d{3,}),/);
    const height = heightMatch
      ? parseInt(heightMatch[1] as string)
      : meta.height ?? await guessHeightFromPlaylist(ctx, this.fetcher, playlistUrl);

    const sizeMatch = html.match(/([\d.]+ ?[GM]B)/);
    const size = sizeMatch ? bytes.parse(sizeMatch[1] as string) as number : undefined;

    const $ = cheerio.load(html);
    const title = $('.videoplayer h1').text().trim();

    return [
      {
        url: playlistUrl,
        format: Format.hls,
        label: this.label,
        ttl: this.ttl,
        meta: {
          ...meta,
          title,
          ...(size && { bytes: size }),
          ...(height && { height }),
        },
      },
    ];
  };
}