/**
 * The SoundCloud link provider: previews from a track page's OG tags.
 *
 * @module
 */

import type { RichContent } from "../../../shared/dump.ts";
import type { RichContentProvider } from "./provider.ts";
import { extractOgTag } from "../html.ts";
import { fetchWithTimeout, readTextCapped } from "../fetch.ts";

/** The provider for soundcloud.com pages, with SoundCloud's embed player. */
export const soundcloudProvider: RichContentProvider = {
  name: "soundcloud",

  matches(url: string): boolean {
    try {
      return new URL(url).hostname === "soundcloud.com";
    } catch {
      return false;
    }
  },

  async fetch(url: string): Promise<RichContent> {
    const res = await fetchWithTimeout(url);
    const contentType = res.headers.get("content-type") ?? "";

    if (!contentType.startsWith("text/html")) {
      await res.body?.cancel();
      return { type: "soundcloud", siteName: "SoundCloud", url };
    }

    const html = await readTextCapped(res);

    return {
      type: "soundcloud",
      siteName: "SoundCloud",
      url,
      title: extractOgTag(html, "title"),
      description: extractOgTag(html, "description"),
      thumbnailUrl: extractOgTag(html, "image"),
      embedUrl: `https://w.soundcloud.com/player/?url=${
        encodeURIComponent(url)
      }&visual=true&auto_play=false`,
    };
  },
};