//---   Modules/Imports   ---//
import { Http } from '@capacitor-community/http';

//---   Logger Function   ---//
function logger(func, data, isError=false) {
  module.logs.unshift({
    name: func,
    time: Date.now(),
    data: data,
    error: isError
  })
}

//---   Youtube Base Parser   ---//
function youtubeParse(html, callback) {
  //---   Replace Encoded Characters   ---///
  html = html.replace(/\\x([0-9A-F]{2})/ig, (...items) => { return String.fromCharCode(parseInt(items[1], 16)); });
  //---   Properly Format JSON   ---//
  html = html.replaceAll("\\\\\"", "");
  //---   Parse JSON   ---//
  html = JSON.parse(html);

  //---   Get Results   ---// ( Thanks To appit-online On Github ) -> https://github.com/appit-online/youtube-search/blob/master/src/lib/search.ts
  let results;
  if (html && html.contents && html.contents.sectionListRenderer && html.contents.sectionListRenderer.contents
    && html.contents.sectionListRenderer.contents.length > 0
    && html.contents.sectionListRenderer.contents[0].itemSectionRenderer
    && html.contents.sectionListRenderer.contents[0].itemSectionRenderer.contents.length > 0) {
      results = html.contents.sectionListRenderer.contents[0].itemSectionRenderer.contents;
      logger("search", results);
      callback(results);
  } else {
    try {
      results = JSON.parse(html.split('{"itemSectionRenderer":{"contents":')[html.split('{"itemSectionRenderer":{"contents":').length - 1].split(',"continuations":[{')[0]);
      logger("search", results);
      callback(results);
    } catch (e) {}
    try {
      results = JSON.parse(html.split('{"itemSectionRenderer":')[html.split('{"itemSectionRenderer":').length - 1].split('},{"continuationItemRenderer":{')[0]).contents;
      logger("search", results);
      callback(results);
    } catch(e) {}
  }
}

//---   Search Main Function   ---//
function youtubeSearch(text, callback) {
  Http.request({
    method: 'GET',
    url: 'https://youtube.com/results',
    params: { q: text, hl: "en" }
  })
  .then((res) => {
    //---   Get HTML Only   ---//
    let html = res.data;
    //---   Isolate The Script Containing Video Information   ---//
    html = html.split("var ytInitialData = '")[1].split("';</script>")[0];
    
    youtubeParse(html, (data) => {
      callback(data);
    })



  })
  .catch((err) => {
    logger("search", err, true);
    callback(err);
  });
}

const module = {
  logs: new Array(),

  //---   Get YouTube's Search Auto Complete   ---//
  autoComplete(text, callback) {
    Http.request({
      method: 'GET',
      url: 'https://suggestqueries-clients6.youtube.com/complete/search',
      params: { client: 'youtube', q: text }
    })
    .then((res) => {
      logger("autoComplete", res);
      callback(res.data);
    })
    .catch((err) => {
      logger("autoComplete", err, true);
      callback(err);
    });
  },

  search(text, callback) {

    let results = new Array();
    youtubeSearch(text, (videos) => {
      for (const i in videos) {
        const video = videos[i];

        if (video.compactVideoRenderer) {
          //---   If Entry Is A Video   ---//
          results.push({
            id: video.compactVideoRenderer.videoId,
            title: video.compactVideoRenderer.title.runs[0].text,
            runtime: video.compactVideoRenderer.lengthText.runs[0].text,
            uploaded: video.compactVideoRenderer.publishedTimeText.runs[0].text,
            views: video.compactVideoRenderer.viewCountText.runs[0].text,
            thumbnails: video.compactVideoRenderer.thumbnail.thumbnails
          })
        } else {
          //---   If Entry Is Not A Video   ---//
          //logger("search", { type: "Error Caught Successfully", error: video }, true);
        }


      }
    })
    callback(results);

  }

}

//---   Start   ---//
export default ({ app }, inject) => {
  inject('youtube', module)
}
logger("Initialize","Program Started");