import type { RichContent } from "../../model/interfaces.ts";
import type { RichContentProvider } from "../rich-content-service.ts";
import { extractOgTag, fetchWithTimeout } from "../rich-content-service.ts";

export const genericProvider: RichContentProvider = {
  name: "generic",

  matches(_url: string): boolean {
    return true; // fallback — always matches
  },

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

    if (!contentType.startsWith("text/html")) {
      return { type: "generic", url };
    }

    const html = await res.text();

    return {
      type: "generic",
      url,
      title: extractOgTag(html, "title"),
      description: extractOgTag(html, "description"),
      thumbnailUrl: extractOgTag(html, "image"),
      siteName: extractOgTag(html, "site_name"),
    };
  },
};