// Dependencies
const cheerio = require('cheerio');
const request = require('request');
// Config
const config = require('../config');

class FlixInfo {

  constructor(opt = '') {
    if (opt == '') throw new Error('missing tmdb api key');

    this.tmdbApiKey = opt;
  }

  getInfo(netflixId, cb) {

    // Imdb id page
    const flixableURL = config.filexibleURL + netflixId;
    // The Movie DB api page
    const theMovieDbURL = config.theMovieDbURL;
    // API Key
    const tmdbApiKey = this.tmdbApiKey;

    var returnResult = {};

    request(flixableURL, (err, response, body) => {

      if (err) {
        returnResult = { error: 1, errorMsg: 'flixable.com error' };
        cb(returnResult)
      }
      else {
        const $ = cheerio.load(body, {
          normalizeWhitespace: true,
          xmlMode: true
        });

        const imdbResult = $('[class="imdbRatingPlugin"]').length;

        if (imdbResult) {
          $('[class="imdbRatingPlugin"]').each(function (i, element) {

            const imdbId = $(this).attr('data-title');
            const tmdbURL = theMovieDbURL + imdbId + '?api_key=' + tmdbApiKey + '&language=en-EN&external_source=imdb_id'

            request(tmdbURL, (err, resultBody, body) => {

              const getJson = JSON.parse(resultBody.body);
              
              if(getJson.status_code > 1){
                  // if wrong api key error
                  returnResult = { error: 1, errorMsg: 'tmdb wrong api key error' };
                  cb(returnResult)
              }
              else{

                if (err) {
                  // if thmdb api connection error
                  returnResult = { error: 1, errorMsg: 'tmdb api error' };
                  cb(returnResult)
                }
                else {
                  if (getJson.tv_results.length) {
                    // If result is tv
                    var result = getJson.tv_results[0];
                    var originalName = result.original_name;
                    var name = result.name;
                    var year = result.first_air_date;
                    if (result.poster_path != null) {
                      var poster = 'https://image.tmdb.org/t/p/original/' + result.poster_path;
                    }
                    if (result.poster_path != null) {
                      var backdrop = 'https://image.tmdb.org/t/p/original/' + result.backdrop_path;
                    }
                    var country = result.origin_country[0];
                    var rate = result.vote_average;
                    var overviewEN = result.overview;
  
                  }
                  else if (getJson.movie_results.length) {
                    // If result is movie
                    var result = getJson.movie_results[0];
                    var originalName = result.original_title;
                    var name = result.title;
                    var year = result.release_date;
                    if (result.poster_path != null) {
                      var poster = 'https://image.tmdb.org/t/p/original/' + result.poster_path;
                    }
                    if (result.poster_path != null) {
                      var backdrop = 'https://image.tmdb.org/t/p/original/' + result.backdrop_path;
                    }
                    var country = result.original_language;
                    var rate = result.vote_average;
                    var overviewEN = result.overview;
                  }
  
                  returnResult = { result: 1, error: 0, originalName, name, year, poster, backdrop, country, rate, overviewEN };
                  // If there is no error return the result
                  cb(returnResult);
                }
              }
            });
          })
        }
        else {
          // Return the error if imdb id cannot be found
          const returnResult = { result: 0, error: 0 };
          cb(returnResult)
        }
      }
    });
  }
}
module.exports = FlixInfo;