import { Hono } from "hono";
import innertube from "../lib/innertube.js";
import { zValidator } from "@hono/zod-validator";
import { SearchVideos } from "../models/SearchVideos.js";
import search from "../templates/search.js";
import { YTNodes } from "youtubei.js";

const video = new Hono();

video.get(
  "/videos",
  zValidator("query", SearchVideos),
  async (c) => {
    const params = c.req.valid("query");
    const page = params["start-index"] ?? 1;

    if (page > 5) {
      return c.html(search([], ""));
    }

    // * fetch all videos up to current page
    const allVideos: YTNodes.Video[] = [];
    let searchQuery = await innertube.search(params.q, {
      duration: params.duration,
      upload_date: params.time,
      sort_by: params.orderby
    });

    for (let i = 1; i <= page; i++) {
      const videos = searchQuery.results.filter(
        (node): node is YTNodes.Video => node.type === "Video"
      );
      allVideos.push(...videos);

      if (i < page) {
        try {
          const nextPage = await searchQuery.getContinuation();
          if (!nextPage) break;
          searchQuery = nextPage;
        } catch (err) {
          // * no more pages available
          break;
        }
      }
    }

    // * build next page URL
    const nextUrl = new URL(c.req.url);
    nextUrl.searchParams.set("start-index", (page + 1).toString());

    return c.html(search(allVideos, nextUrl.toString()));
  }
);

export default video;