/*

    PokeTube is a Free/Libre youtube front-end !
    
    Copyright (C) 2021-2023 POKETUBE
 
    This file is Licensed under LGPL-3.0-or-later. Poketube itself is GPL, Only this file is LGPL.
    
    see a copy here:https://www.gnu.org/licenses/lgpl-3.0.txt
    
    please dont remove this comment while sharing this code 
    
  */


const fetch = require("node-fetch"); //2.5.x
const { toJson } = require("xml2json");

const youtubeUrl = "https://www.youtube.com/watch?v=";
const dislikeApi = "https://returnyoutubedislikeapi.com/votes?videoId=";
const newApiUrl = "https://inner-api.poketube.fun/api/player";

const parseXml = async (videoId, headers) => {
  try {
    const player = await fetch(`${newApiUrl}?v=${videoId}`, headers);
    const xml = await player.text();
    const json = toJson(xml);
    return getJson(json);
  } catch (error) {
    console.error(`Error parsing XML: ${error}`);
    return null;
  }
};

const getJson = (str) => {
  try {
    return JSON.parse(str);
  } catch {
    return null;
  }
};

const getEngagementData = async (videoId) => {
  const apiUrl = `${dislikeApi}${videoId}`;
  const fallbackUrl = `https://p.poketube.fun/${apiUrl}`;

  try {
    const engagement = await fetch(apiUrl).then((res) => res.json());
    return engagement;
  } catch {
    try {
      const engagement = await fetch(fallbackUrl).then((res) => res.json());
      return engagement;
    } catch {
      return;
    }
  }
};


const getPokeTubeData = async (videoId) => {
  const headers = {};
  const videoData = await parseXml(videoId, headers);
  const engagement = await getEngagementData(videoId);

  return {
    video: videoData,
    engagement,
    videoUrlYoutube: `${youtubeUrl}${videoId}`,
  };
};

module.exports = getPokeTubeData