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/* global getParameterByName */
// eslint-disable-next-line no-unused-vars
class bilibili {
  static bi_convert_song(song_info) {
    const track = {
      id: `bitrack_${song_info.id}`,
      title: song_info.title,
      artist: song_info.uname,
      artist_id: `biartist_${song_info.uid}`,
      source: 'bilibili',
      source_url: `https://www.bilibili.com/audio/au${song_info.id}`,
      img_url: song_info.cover,
      // url: song_info.id,
      lyric_url: song_info.lyric,
    };
    return track;
  }

  static show_playlist(url) {
    let offset = getParameterByName('offset', url);
    if (offset === undefined) {
      offset = 0;
    }
    const page = offset / 20 + 1;
    const target_url = `https://www.bilibili.com/audio/music-service-c/web/menu/hit?ps=20&pn=${page}`;
    return {
      success: (fn) => {
        axios.get(target_url).then((response) => {
          const { data } = response.data.data;
          const result = data.map((item) => ({
            cover_img_url: item.cover,
            title: item.title,
            id: `biplaylist_${item.menuId}`,
            source_url: `https://www.bilibili.com/audio/am${item.menuId}`,
          }));
          return fn({
            result,
          });
        });
      },
    };
  }

  static bi_get_playlist(url) {
    const list_id = getParameterByName('list_id', url).split('_').pop();
    const target_url = `https://www.bilibili.com/audio/music-service-c/web/menu/info?sid=${list_id}`;
    return {
      success: (fn) => {
        axios.get(target_url).then((response) => {
          const { data } = response.data;
          const info = {
            cover_img_url: data.cover,
            title: data.title,
            id: `biplaylist_${list_id}`,
            source_url: `https://www.bilibili.com/audio/am${list_id}`,
          };
          const target = `https://www.bilibili.com/audio/music-service-c/web/song/of-menu?pn=1&ps=100&sid=${list_id}`;
          axios.get(target).then((res) => {
            const tracks = res.data.data.data.map((item) =>
              this.bi_convert_song(item)
            );
            return fn({
              info,
              tracks,
            });
          });
        });
      },
    };
  }

  // eslint-disable-next-line no-unused-vars
  static bi_album(url) {
    return {
      success: (fn) =>
        fn({
          tracks: [],
          info: {},
        }),
      // bilibili havn't album
      // const album_id = getParameterByName('list_id', url).split('_').pop();
      // const target_url = '';
      // axios.get(target_url).then((response) => {
      //   const data = response.data;
      //   const info = {};
      //   const tracks = [];
      //   return fn({
      //     tracks,
      //     info,
      //   });
      // });
    };
  }

  static bi_artist(url) {
    return {
      success: (fn) => {
        const artist_id = getParameterByName('list_id', url).split('_').pop();
        let target_url = `https://api.bilibili.com/x/space/acc/info?mid=${artist_id}&jsonp=jsonp`;
        axios.get(target_url).then((response) => {
          const info = {
            cover_img_url: response.data.data.face,
            title: response.data.data.name,
            id: `biartist_${artist_id}`,
            source_url: `https://space.bilibili.com/${artist_id}/#/audio`,
          };
          target_url = `https://api.bilibili.com/audio/music-service-c/web/song/upper?pn=1&ps=0&order=2&uid=${artist_id}`;
          axios.get(target_url).then((res) => {
            const tracks = res.data.data.data.map((item) =>
              this.bi_convert_song(item)
            );
            return fn({
              tracks,
              info,
            });
          });
        });
      },
    };
  }

  static parse_url(url) {
    let result;
    const match = /\/\/www.bilibili.com\/audio\/am([0-9]+)/.exec(url);
    if (match != null) {
      const playlist_id = match[1];
      result = {
        type: 'playlist',
        id: `biplaylist_${playlist_id}`,
      };
    }
    return {
      success: (fn) => {
        fn(result);
      },
    };
  }

  static bootstrap_track(track, success, failure) {
    const sound = {};
    const song_id = track.id.slice('bitrack_'.length);
    const target_url = `https://www.bilibili.com/audio/music-service-c/web/url?sid=${song_id}`;
    axios.get(target_url).then((response) => {
      const { data } = response;
      if (data.code === 0) {
        [sound.url] = data.data.cdns;
        sound.platform = 'bilibili';

        success(sound);
      } else {
        failure(sound);
      }
    });
  }

  static search(url) {
    return {
      success: (fn) => {
        const keyword = getParameterByName('keywords', url);
        const curpage = getParameterByName('curpage', url);
        const au = /\d+$/.exec(keyword);
        if (au != null) {
          const target_url = `https://www.bilibili.com/audio/music-service-c/web/song/info?sid=${au}`;
          axios.get(target_url).then((response) => {
            const { data } = response.data;
            const tracks = [this.bi_convert_song(data)];
            return fn({
              result: tracks,
              total: 1,
            });
          });
        } else {
          return fn({
            result: [],
            total: 0,
          });
        }
        // inferred, not implemented yet
        const target_url = `https://api.bilibili.com/x/web-interface/search/type?search_type=audio&keyword=${keyword}&page=${curpage}`;
        axios.get(target_url).then((response) => {
          const { data } = response.data;
          const tracks = data.result.map((item) => this.bi_convert_song(item));
          return fn({
            result: tracks,
            total: data.numResults,
          });
        });
        return null;
      },
    };
  }

  static lyric(url) {
    // const track_id = getParameterByName('track_id', url).split('_').pop();
    const lyric_url = getParameterByName('lyric_url', url);
    return {
      success: (fn) => {
        axios.get(lyric_url).then((response) => {
          const { data } = response;
          return fn({
            lyric: data,
          });
        });
      },
    };
  }

  static get_playlist(url) {
    const list_id = getParameterByName('list_id', url).split('_')[0];
    switch (list_id) {
      case 'biplaylist':
        return this.bi_get_playlist(url);
      case 'bialbum':
        return this.bi_album(url);
      case 'biartist':
        return this.bi_artist(url);
      default:
        return null;
    }
  }

  static get_playlist_filters() {
    return {
      success: (fn) => fn({ recommend: [], all: [] }),
    };
  }

  static get_user() {
    return {
      success: (fn) => fn({ status: 'fail', data: {} }),
    };
  }

  static get_login_url() {
    return `https://www.bilibili.com`;
  }

  static logout() {}

  // return {
  //   show_playlist: bi_show_playlist,
  //   get_playlist_filters,
  //   get_playlist,
  //   parse_url: bi_parse_url,
  //   bootstrap_track: bi_bootstrap_track,
  //   search: bi_search,
  //   lyric: bi_lyric,
  //   get_user: bi_get_user,
  //   get_login_url: bi_get_login_url,
  //   logout: bi_logout,
  // };
}