import 'package:cookie_jar/cookie_jar.dart';
import 'package:crypto/crypto.dart';
import 'package:dio/dio.dart';
import 'package:dio_cookie_manager/dio_cookie_manager.dart';
import 'package:flutter/foundation.dart';
import 'package:freezer/api/cache.dart';
import 'package:freezer/api/definitions.dart';
import 'package:freezer/api/spotify.dart';
import 'package:freezer/settings.dart';
import 'package:http/http.dart' as http;
import 'package:logging/logging.dart';

import 'dart:convert';
import 'dart:async';

final deezerAPI = DeezerAPI();

class DeezerAPI {
  // from deemix: https://gitlab.com/RemixDev/deemix-js/-/blob/main/deemix/utils/deezer.js?ref_type=heads#L6
  static const CLIENT_ID = "172365";
  static const CLIENT_SECRET = "fb0bec7ccc063dab0417eb7b0d847f34";

  static const USER_AGENT_SUFFIX =
      'AppleWebKit/537.36 (KHTML, like Gecko) Chrome/118.0.0.0 Safari/537.36';
  static const WINDOWS_USER_AGENT =
      "Mozilla/5.0 (Windows NT 10.0; Win64; x64) $USER_AGENT_SUFFIX";
  static const MACOS_USER_AGENT =
      'Mozilla/5.0 (Macintosh; Intel Mac OS X 14_0) $USER_AGENT_SUFFIX';
  static const USER_AGENTS = <TargetPlatform, String>{
    TargetPlatform.android: WINDOWS_USER_AGENT,
    TargetPlatform.windows: WINDOWS_USER_AGENT,
    TargetPlatform.iOS: MACOS_USER_AGENT,
    TargetPlatform.macOS: MACOS_USER_AGENT,
    TargetPlatform.linux: 'Mozilla/5.0 (X11; Linux x86_64) $USER_AGENT_SUFFIX',
  };

  static String get userAgent => USER_AGENTS[defaultTargetPlatform]!;

  static final _logger = Logger('DeezerAPI');
  DeezerAPI();

  set arl(String? arl) {
    if (arl == null) {
      cookieJar.delete(Uri.https('www.deezer.com'));
      return;
    }
    cookieJar
        .saveFromResponse(Uri.https('www.deezer.com'), [Cookie('arl', arl)]);
  }

  String? token;
  String? userId;
  String? userName;
  String? favoritesPlaylistId;
  String? sid;
  late String licenseToken;
  late bool canStreamLossless;
  late bool canStreamHQ;

  final cookieJar = DefaultCookieJar();
  late final dio = Dio(BaseOptions(
      headers: headers,
      responseType: ResponseType.json,
      validateStatus: (status) => true))
    ..interceptors.add(CookieManager(cookieJar));

  Future<bool>? _authorizing;

  //Get headers
  Map<String, String> get headers => {
        "User-Agent": userAgent,
        "Content-Language":
            '${settings.deezerLanguage}-${settings.deezerCountry}',
        "Cache-Control": "max-age=0",
        "Accept": "*/*",
        "Accept-Charset": "utf-8,ISO-8859-1;q=0.7,*;q=0.3",
        "Accept-Language":
            "${settings.deezerLanguage}-${settings.deezerCountry},${settings.deezerLanguage};q=0.9,en-US;q=0.8,en;q=0.7",
        "Connection": "keep-alive",
      };

  Future<void> logout() async {
    // delete all cookies
    await cookieJar.deleteAll();
    updateHeaders();
  }

  void updateHeaders() {
    dio.options.headers = headers;
  }

  //Call private API
  Future<Map<dynamic, dynamic>> callApi(String method,
      {Map<dynamic, dynamic>? params, String? gatewayInput}) async {
    //Post
    final res = await dio.post('https://www.deezer.com/ajax/gw-light.php',
        queryParameters: {
          'api_version': '1.0',
          'api_token': token,
          'input': '3',
          'method': method,
          //Used for homepage
          if (gatewayInput != null) 'gateway_input': gatewayInput
        },
        data: jsonEncode(params));
    final body = res.data;

    // In case of error "Invalid CSRF token" retrieve new one and retry the same call
    if (body!['error'].isNotEmpty &&
        body['error'].containsKey('VALID_TOKEN_REQUIRED') &&
        await rawAuthorize()) {
      return callApi(method, params: params, gatewayInput: gatewayInput);
    }

    return body;
  }

  Future<Map> callPublicApi(String path) async {
    final res = await dio.get('https://api.deezer.com/$path');
    return res.data;
  }

  //Wrapper so it can be globally awaited
  Future<bool> authorize() async => _authorizing ??= rawAuthorize();

  //Login with email FROM DEEMIX-JS
  Future<String> getArlByEmail(String email, String password) async {
    //Get MD5 of password
    final md5Password = md5.convert(utf8.encode(password)).toString();
    final hash = md5
        .convert(utf8
            .encode([CLIENT_ID, email, md5Password, CLIENT_SECRET].join('')))
        .toString();
    //Get access token
    // String url =
    //     "https://tv.deezer.com/smarttv/8caf9315c1740316053348a24d25afc7/user_auth.php?login=$email&password=$md5password&device=panasonic&output=json";
    // http.Response response = await http.get(Uri.parse(url));
    // String? accessToken = jsonDecode(response.body)["access_token"];
    final res = await dio.get('https://api.deezer.com/auth/token',
        queryParameters: {
          'app_id': CLIENT_ID,
          'login': email,
          'password': md5Password,
          'hash': hash
        },
        options: Options(responseType: ResponseType.json));
    print(res.data);
    final accessToken = res.data['access_token'] as String?;
    if (accessToken == null) {
      throw Exception('login failed, access token is null');
    }

    print(accessToken);

    return getArlByAccessToken(accessToken);
  }

  // FROM DEEMIX-JS
  Future<String> getArlByAccessToken(String accessToken) async {
    //Get SID in cookieJar
    final res =
        await dio.get("https://api.deezer.com/platform/generic/track/3135556",
            options: Options(headers: {
              'Authorization': 'Bearer $accessToken',
              'User-Agent': userAgent,
            }));
    print(res.data);
    //Get ARL
    final arlRes = await dio.get("https://www.deezer.com/ajax/gw-light.php",
        queryParameters: {
          'method': 'user.getArl',
          'input': '3',
          'api_version': '1.0',
          'api_token': 'null',
        },
        options: Options(responseType: ResponseType.json));
    final arl = arlRes.data["results"];
    if (arl == null) throw Exception('couldn\'t obtain ARL');
    return arl;
  }

  //Authorize, bool = success
  Future<bool> rawAuthorize({Function? onError}) async {
    try {
      final data = await callApi('deezer.getUserData');
      if (data['results']?['USER']?['USER_ID'] == null ||
          data['results']['USER']['USER_ID'] == 0) {
        return false;
      } else {
        token = data['results']['checkForm'];
        userId = data['results']['USER']['USER_ID'].toString();
        userName = data['results']['USER']['BLOG_NAME'];
        favoritesPlaylistId = data['results']['USER']['LOVEDTRACKS_ID'];
        canStreamHQ = data['results']['USER']['OPTIONS']['web_hq'] as bool ||
            data['results']['USER']['OPTIONS']['mobile_hq'] as bool;
        canStreamLossless =
            data['results']['USER']['OPTIONS']['web_lossless'] as bool ||
                data['results']['USER']['OPTIONS']['mobile_lossless'] as bool;
        licenseToken =
            data['results']['USER']['OPTIONS']['license_token'] as String;

        settings.checkQuality(canStreamHQ, canStreamLossless);
        cache.canStreamHQ = canStreamHQ;
        cache.canStreamLossless = canStreamLossless;
        if (cache.favoritesPlaylistId != favoritesPlaylistId) {
          cache.favoritesPlaylistId = favoritesPlaylistId;
        }
        await cache.save();
        return true;
      }
    } catch (e) {
      if (onError != null) onError(e);
      _logger.warning('Login Error (D): $e');
      return false;
    }
  }

  //URL/Link parser
  Future<DeezerLinkResponse?> parseLink(String url) async {
    Uri uri = Uri.parse(url);
    //https://www.deezer.com/NOTHING_OR_COUNTRY/TYPE/ID
    if (uri.host == 'www.deezer.com' || uri.host == 'deezer.com') {
      if (uri.pathSegments.length < 2) return null;
      DeezerLinkType? type = DeezerLinkResponse.typeFromString(
          uri.pathSegments[uri.pathSegments.length - 2]);
      return DeezerLinkResponse(
          type: type, id: uri.pathSegments[uri.pathSegments.length - 1]);
    }
    //Share URL
    if (uri.host == 'deezer.page.link' || uri.host == 'www.deezer.page.link') {
      http.BaseRequest request = http.Request('HEAD', Uri.parse(url));
      request.followRedirects = false;
      http.StreamedResponse response = await request.send();
      String newUrl = response.headers['location']!;
      return parseLink(newUrl);
    }
    //Spotify
    if (uri.host == 'open.spotify.com') {
      if (uri.pathSegments.length < 2) return null;
      String spotifyUri = 'spotify:${uri.pathSegments.sublist(0, 2).join(':')}';
      try {
        //Tracks
        if (uri.pathSegments[0] == 'track') {
          String id = await SpotifyScrapper.convertTrack(spotifyUri);
          return DeezerLinkResponse(type: DeezerLinkType.TRACK, id: id);
        }
        //Albums
        if (uri.pathSegments[0] == 'album') {
          String id = await SpotifyScrapper.convertAlbum(spotifyUri);
          return DeezerLinkResponse(type: DeezerLinkType.ALBUM, id: id);
        }
      } catch (e) {
        // we don't care about errors apparently
      }
    }

    return null;
  }

  //Check if Deezer available in country
  static Future<bool?> chceckAvailability() async {
    try {
      http.Response res =
          await http.get(Uri.parse('https://api.deezer.com/infos'));
      return jsonDecode(res.body)["open"];
    } catch (e) {
      return null;
    }
  }

  Future<GetTrackUrlResponse> getTrackUrl(
          String trackToken, String format) async =>
      (await getTracksUrl([trackToken], format))[0];

  Future<List<GetTrackUrlResponse>> getTracksUrl(
      List<String> trackTokens, String format) async {
    final response = await http.post(
      Uri.https('media.deezer.com', '/v1/get_url'),
      body: jsonEncode({
        "license_token": licenseToken,
        "media": [
          {
            "type": "FULL",
            "formats": [
              {"cipher": "BF_CBC_STRIPE", "format": format}
            ],
          }
        ],
        "track_tokens": trackTokens,
      }),
      headers: headers,
    );
    final data = (jsonDecode(response.body) as Map)['data'] as List;
    return data.map((data) {
      if (data['errors'] != null) {
        if (data['errors'][0]['code'] == 2002) {
          return GetTrackUrlResponse(error: 'Wrong geolocation');
        }

        return GetTrackUrlResponse(
            error: (data['errors'][0] as Map).toString());
      }

      if (data['media'] == null) return GetTrackUrlResponse();
      return GetTrackUrlResponse(
          sources: (data['media'][0]['sources'] as List)
              .map<TrackUrlSource>((e) => TrackUrlSource.fromPrivateJson(
                  (e as Map).cast<String, dynamic>()))
              .toList(growable: false));
    }).toList(growable: false);
  }

  //Search
  Future<SearchResults> search(String? query) async {
    Map<dynamic, dynamic> data = await callApi('deezer.pageSearch',
        params: {'nb': 128, 'query': query, 'start': 0});
    return SearchResults.fromPrivateJson(data['results']);
  }

  Future<Track> track(String? id) async {
    Map<dynamic, dynamic> data = await callApi('song.getListData', params: {
      'sng_ids': [id]
    });
    return Track.fromPrivateJson(data['results']['data'][0]);
  }

  //Get album details, tracks
  Future<Album> album(String? id) async {
    Map<dynamic, dynamic> data = await callApi('deezer.pageAlbum', params: {
      'alb_id': id,
      'header': true,
      'lang': settings.deezerLanguage
    });
    return Album.fromPrivateJson(data['results']['DATA'],
        songsJson: data['results']['SONGS']);
  }

  //Get artist details
  Future<Artist> artist(String? id) async {
    Map<dynamic, dynamic> data = await callApi('deezer.pageArtist', params: {
      'art_id': id,
      'lang': settings.deezerLanguage,
    });
    return Artist.fromPrivateJson(data['results']['DATA'],
        topJson: data['results']['TOP'],
        albumsJson: data['results']['ALBUMS'],
        highlight: data['results']['HIGHLIGHT']);
  }

  //Get playlist tracks at offset
  Future<List<Track>?> playlistTracksPage(String? id, int start,
      {int nb = 2000 /*was 50*/}) async {
    Map data = await callApi('deezer.pagePlaylist', params: {
      'playlist_id': id,
      'lang': settings.deezerLanguage,
      'nb': nb,
      'tags': true,
      'start': start
    });
    return data['results']['SONGS']['data']
        .map<Track>((json) => Track.fromPrivateJson(json))
        .toList();
  }

  //Get playlist details
  Future<Playlist> playlist(String? id, {int nb = 100}) async {
    Map<dynamic, dynamic> data = await callApi('deezer.pagePlaylist', params: {
      'playlist_id': id,
      'lang': settings.deezerLanguage,
      'nb': nb,
      'tags': true,
      'start': 0
    });
    return Playlist.fromPrivateJson(data['results']['DATA'],
        songsJson: data['results']['SONGS']);
  }

  //Get playlist with all tracks
  Future<Playlist> fullPlaylist(String? id) async {
    return await playlist(id, nb: 100000);
  }

  //Add track to favorites
  Future addFavoriteTrack(String id) async {
    await callApi('favorite_song.add', params: {'SNG_ID': id});
  }

  //Add album to favorites/library
  Future addFavoriteAlbum(String? id) async {
    await callApi('album.addFavorite', params: {'ALB_ID': id});
  }

  //Add artist to favorites/library
  Future addFavoriteArtist(String? id) async {
    await callApi('artist.addFavorite', params: {'ART_ID': id});
  }

  //Remove artist from favorites/library
  Future removeArtist(String? id) async {
    await callApi('artist.deleteFavorite', params: {'ART_ID': id});
  }

  // Mark track as disliked
  Future dislikeTrack(String id) async {
    await callApi('favorite_dislike.add', params: {'ID': id, 'TYPE': 'song'});
  }

  //Add tracks to playlist
  Future addToPlaylist(String trackId, String? playlistId,
      {int offset = -1}) async {
    await callApi('playlist.addSongs', params: {
      'offset': offset,
      'playlist_id': playlistId,
      'songs': [
        [trackId, 0]
      ]
    });
  }

  //Remove track from playlist
  Future removeFromPlaylist(String trackId, String? playlistId) async {
    await callApi('playlist.deleteSongs', params: {
      'playlist_id': playlistId,
      'songs': [
        [trackId, 0]
      ]
    });
  }

  //Get users playlists
  Future<List<Playlist>> getPlaylists() async {
    Map data = await callApi('deezer.pageProfile',
        params: {'nb': 100, 'tab': 'playlists', 'user_id': userId});
    return data['results']['TAB']['playlists']['data']
        .map<Playlist>((json) => Playlist.fromPrivateJson(json, library: true))
        .toList();
  }

  //Get favorite albums
  Future<List<Album>> getAlbums() async {
    Map data = await callApi('deezer.pageProfile',
        params: {'nb': 50, 'tab': 'albums', 'user_id': userId});
    List albumList = data['results']['TAB']['albums']['data'];
    List<Album> albums = albumList
        .map<Album>((json) => Album.fromPrivateJson(json, library: true))
        .toList();
    return albums;
  }

  //Remove album from library
  Future removeAlbum(String? id) async {
    await callApi('album.deleteFavorite', params: {'ALB_ID': id});
  }

  //Remove track from favorites
  Future removeFavorite(String id) async {
    await callApi('favorite_song.remove', params: {'SNG_ID': id});
  }

  //Get favorite artists
  Future<List<Artist>?> getArtists() async {
    Map data = await callApi('deezer.pageProfile',
        params: {'nb': 40, 'tab': 'artists', 'user_id': userId});
    return data['results']['TAB']['artists']['data']
        .map<Artist>((json) => Artist.fromPrivateJson(json, library: true))
        .toList();
  }

  //Get lyrics by track id
  Future<Lyrics> lyrics(String? trackId) async {
    Map data = await callApi('song.getLyrics', params: {'sng_id': trackId});
    if (data['error'] != null && data['error'].length > 0) {
      return Lyrics.error();
    }
    return Lyrics.fromPrivateJson(data['results']);
  }

  Future<SmartTrackList> smartTrackList(String? id) async {
    Map data = await callApi('deezer.pageSmartTracklist',
        params: {'smarttracklist_id': id});

    return SmartTrackList.fromPrivateJson(data['results'],
        songsJson: data['results']['SONGS']);
  }

  Future<List<Track>?> flow([String? config]) async {
    Map data = await callApi('radio.getUserRadio', params: {
      if (config != null) 'config_id': config,
      'user_id': userId,
    });
    return data['results']['data']
        ?.map<Track>((json) => Track.fromPrivateJson(json))
        .toList();
  }

  //Get homepage/music library from deezer
  Future<HomePage> homePage() async {
    List grid = [
      'album',
      'artist',
      'channel',
      'flow',
      'playlist',
      'radio',
      'show',
      'smarttracklist',
      'track',
      'user'
    ];
    Map data = await callApi('page.get',
        gatewayInput: jsonEncode({
          "PAGE": "home",
          "VERSION": "2.5",
          "SUPPORT": {
            "deeplink-list": ["deeplink"],
            "list": ["episode"],
            "grid-preview-one": grid,
            "grid-preview-two": grid,
            "slideshow": grid,
            "message": ["call_onboarding"],
            "grid": grid,
            "horizontal-grid": grid,
            "horizontal-list": ["track", "song"],
            "item-highlight": ["radio"],
            "large-card": ["album", "playlist", "show", "video-link"],
            "long-card-horizontal-grid": grid,
            "ads": [], //Nope
            // ADDED BY VERSION 2.5
            "small-horizontal-grid": ["flow"],
            "filterable-grid": ["flow"],
          },
          "LANG": settings.deezerLanguage,
          "OPTIONS": []
        }));

    return HomePage.fromPrivateJson(data['results']);
  }

  /// Log song listen to deezer
  Future logListen(
    String trackId, {
    /// Amount of times the track's been seeked
    int seek = 0,

    /// Amount of times the track's been paused
    int pause = 0,

    /// 1 if the track was listened in sync, 0 otherwise
    int sync = 1,

    /// If the track is skipped to the next song
    bool next = false,

    /// If the track is skipped to the previous song
    bool prev = false,

    /// When the timestamp has begun as UTC int (in SECONDS)
    int? timestamp,
  }) async {
    await callApi('log.listen', params: {
      'params': {
        'timestamp':
            timestamp ?? (DateTime.now().millisecondsSinceEpoch) ~/ 1000,
        'ts_listen': DateTime.now().millisecondsSinceEpoch ~/ 1000,
        'type': 1,
        'stat': {
          'seek': seek, // amount of times seeked
          'pause': pause, // amount of times paused
          'sync': sync,
          if (next) 'next': true,
          if (prev) 'prev': true,
        },
        'media': {'id': trackId, 'type': 'song', 'format': 'MP3_128'}
      }
    });
  }

  Future<HomePage> getChannel(String? target) async {
    List grid = [
      'album',
      'artist',
      'channel',
      'flow',
      'playlist',
      'radio',
      'show',
      'smarttracklist',
      'track',
      'user'
    ];
    Map data = await callApi('page.get',
        gatewayInput: jsonEncode({
          'PAGE': target,
          "VERSION": "2.5",
          "SUPPORT": {
            "deeplink-list": ["deeplink"],
            "list": ["episode"],
            "grid-preview-one": grid,
            "grid-preview-two": grid,
            "slideshow": grid,
            "message": ["call_onboarding"],

            "grid": grid,
            "horizontal-grid": grid,
            "item-highlight": ["radio"],
            "large-card": ["album", "playlist", "show", "video-link"],
            "ads": [] //Nope
          },
          "LANG": settings.deezerLanguage,
          "OPTIONS": []
        }));
    return HomePage.fromPrivateJson(data['results']);
  }

  //Add playlist to library
  Future addPlaylist(String id) async {
    await callApi('playlist.addFavorite',
        params: {'parent_playlist_id': int.parse(id)});
  }

  //Remove playlist from library
  Future removePlaylist(String id) async {
    await callApi('playlist.deleteFavorite',
        params: {'playlist_id': int.parse(id)});
  }

  //Delete playlist
  Future deletePlaylist(String? id) async {
    await callApi('playlist.delete', params: {'playlist_id': id});
  }

  //Create playlist
  //Status 1 - private, 2 - collaborative
  Future<String> createPlaylist(String? title,
      {String? description = "",
      int? status = 1,
      List<String> trackIds = const []}) async {
    Map data = await callApi('playlist.create', params: {
      'title': title,
      'description': description,
      'songs': trackIds
          .map<List>((id) => [int.parse(id), trackIds.indexOf(id)])
          .toList(),
      'status': status
    });
    //Return playlistId
    return data['results'].toString();
  }

  //Get part of discography
  Future<List<Album>?> discographyPage(String artistId,
      {int start = 0, int nb = 50}) async {
    Map data = await callApi('album.getDiscography', params: {
      'art_id': int.parse(artistId),
      'discography_mode': 'all',
      'nb': nb,
      'start': start,
      'nb_songs': 30
    });

    return data['results']['data']
        .map<Album>((a) => Album.fromPrivateJson(a))
        .toList();
  }

  Future<List<String>?> searchSuggestions(String? query) async {
    Map data =
        await callApi('search_getSuggestedQueries', params: {'QUERY': query});
    return (data['results']['SUGGESTION'] as List?)
        ?.map<String>((s) => s['QUERY'] as String)
        .toList();
  }

  //Get smart radio for artist id
  Future<List<Track>?> smartRadio(String artistId) async {
    Map data = await callApi('smart.getSmartRadio',
        params: {'art_id': int.parse(artistId)});
    return data['results']['data']
        .map<Track>((t) => Track.fromPrivateJson(t))
        .toList();
  }

  //Update playlist metadata, status = see createPlaylist
  Future updatePlaylist(String id, String title, String description,
      {int? status = 1}) async {
    await callApi('playlist.update', params: {
      'description': description,
      'title': title,
      'playlist_id': int.parse(id),
      'status': status,
      'songs': []
    });
  }

  //Get shuffled library
  Future<List<Track>?> libraryShuffle({int start = 0}) async {
    Map data = await callApi('tracklist.getShuffledCollection',
        params: {'nb': 50, 'start': start});
    return data['results']['data']
        .map<Track>((t) => Track.fromPrivateJson(t))
        .toList();
  }

  //Get similar tracks for track with id [trackId]
  Future<List<Track>?> playMix(String? trackId) async {
    Map data = await callApi('song.getContextualTrackMix', params: {
      'sng_ids': [trackId]
    });
    return data['results']['data']
        .map<Track>((t) => Track.fromPrivateJson(t))
        .toList();
  }

  Future<List<ShowEpisode>?> allShowEpisodes(String? showId) async {
    Map data = await callApi('deezer.pageShow', params: {
      'country': settings.deezerCountry,
      'lang': settings.deezerLanguage,
      'nb': 1000,
      'show_id': showId,
      'start': 0,
      'user_id': int.parse(deezerAPI.userId!)
    });
    return data['results']['EPISODES']['data']
        .map<ShowEpisode>((e) => ShowEpisode.fromPrivateJson(e))
        .toList();
  }
}