import 'dart:convert';

import 'package:flutter/foundation.dart';
import 'package:shared_preferences/shared_preferences.dart';

import '../state/podcast_group.dart';
import '../type/playlist.dart';

const String groupsKey = 'groups';
const String playlistKey = 'playlist';
const String autoPlayKey = 'autoPlay';
const String audioPositionKey = 'audioposition';
const String lastWorkKey = 'lastWork';
const String refreshdateKey = 'refreshdate';
const String themesKey = 'themes';
const String accentsKey = 'accents';
const String autoUpdateKey = 'autoAdd';
const String updateIntervalKey = 'updateInterval';
const String downloadUsingDataKey = 'downloadUsingData';
const String introKey = 'intro';
const String realDarkKey = 'realDark';
const String cacheMaxKey = 'cacheMax';
const String podcastLayoutKey = 'podcastLayoutKey';
const String recentLayoutKey = 'recentLayoutKey';
const String favLayoutKey = 'favLayoutKey';
const String downloadLayoutKey = 'downloadLayoutKey';
const String autoDownloadNetworkKey = 'autoDownloadNetwork';
const String episodePopupMenuKey = 'episodePopupMenuKey';
const String autoDeleteKey = 'autoDeleteKey';
const String autoSleepTimerKey = 'autoSleepTimerKey';
const String autoSleepTimerStartKey = 'autoSleepTimerStartKey';
const String autoSleepTimerEndKey = 'autoSleepTimerEndKey';
const String defaultSleepTimerKey = 'defaultSleepTimerKey';
const String autoSleepTimerModeKey = 'autoSleepTimerModeKey';
const String tapToOpenPopupMenuKey = 'tapToOpenPopupMenuKey';
const String fastForwardSecondsKey = 'fastForwardSecondsKey';
const String rewindSecondsKey = 'rewindSecondsKey';
const String playerHeightKey = 'playerHeightKey';
const String speedKey = 'speedKey';
const String skipSilenceKey = 'skipSilenceKey';
const String localeKey = 'localeKey';
const String boostVolumeKey = 'boostVolumeKey';
const String volumeGainKey = 'volumeGainKey';
const String hideListenedKey = 'hideListenedKey';
const String notificationLayoutKey = 'notificationLayoutKey';
const String showNotesFontKey = 'showNotesFontKey';
const String speedListKey = 'speedListKey';
const String searchHistoryKey = 'searchHistoryKey';
const String gpodderApiKey = 'gpodderApiKey';
const String gpodderAddKey = 'gpodderAddKey';
const String gpodderRemoveKey = 'gpodderRemoveKey';
const String gpodderSyncStatusKey = 'gpodderSyncStatusKey';
const String gpodderSyncDateTimeKey = 'gpodderSyncDateTimeKey';
const String gpodderRemoteAddKey = 'gpodderRemoteAddKey';
const String gpodderRemoteRemoveKey = 'gpodderRemoteRemoveKey';
const String hidePodcastDiscoveryKey = 'hidePodcastDiscoveryKey';
const String searchEngineKey = 'searchEngineKey';
const String markListenedAfterSkipKey = 'markListenedAfterSkipKey';
const String downloadPositionKey = 'downloadPositionKey';
const String deleteAfterPlayedKey = 'removeAfterPlayedKey';
const String playlistsAllKey = 'playlistsAllKey';
const String playerStateKey = 'playerStateKey';
const String openPlaylistDefaultKey = 'openPlaylistDefaultKey';
const String openAllPodcastDefaultKey = 'openAllPodcastDefaultKey';

class KeyValueStorage {
  final String key;
  KeyValueStorage(this.key);
  Future<List<GroupEntity>> getGroups() async {
    var prefs = await SharedPreferences.getInstance();
    if (prefs.getString(key) == null) {
      var home = PodcastGroup('Home');
      await prefs.setString(
          key,
          json.encode({
            'groups': [home.toEntity().toJson()]
          }));
    }
    return json
        .decode(prefs.getString(key))['groups']
        .cast<Map<String, Object>>()
        .map<GroupEntity>(GroupEntity.fromJson)
        .toList(growable: false);
  }

  Future<bool> saveGroup(List<GroupEntity> groupList) async {
    var prefs = await SharedPreferences.getInstance();
    return prefs.setString(
        key,
        json.encode(
            {'groups': groupList.map((group) => group.toJson()).toList()}));
  }

  Future<List<PlaylistEntity>> getPlaylists() async {
    var prefs = await SharedPreferences.getInstance();
    if (prefs.getString(key) == null) {
      var episodeList = prefs.getStringList(playlistKey);
      var playlist = Playlist('Queue', episodeList: episodeList);
      await prefs.setString(
          key,
          json.encode({
            'playlists': [playlist.toEntity().toJson()]
          }));
    }
    print(prefs.getString(key));
    return json
        .decode(prefs.getString(key))['playlists']
        .cast<Map<String, Object>>()
        .map<PlaylistEntity>(PlaylistEntity.fromJson)
        .toList(growable: false);
  }

  Future<bool> savePlaylists(List<PlaylistEntity> playlists) async {
    var prefs = await SharedPreferences.getInstance();
    return prefs.setString(
        key,
        json.encode({
          'playlists': playlists.map((playlist) => playlist.toJson()).toList()
        }));
  }

  Future<bool> savePlayerState(
      String playlist, String episode, int position) async {
    var prefs = await SharedPreferences.getInstance();
    return prefs.setStringList(key, [playlist, episode, position.toString()]);
  }

  Future<List<String>> getPlayerState() async {
    var prefs = await SharedPreferences.getInstance();
    if (prefs.getStringList(key) == null) {
      final position = prefs.getInt(audioPositionKey) ?? 0;
      await savePlayerState('', '', position);
    }
    return prefs.getStringList(key);
  }

  Future<bool> saveInt(int setting) async {
    var prefs = await SharedPreferences.getInstance();
    return prefs.setInt(key, setting);
  }

  Future<int> getInt({int defaultValue = 0}) async {
    var prefs = await SharedPreferences.getInstance();
    if (prefs.getInt(key) == null) await prefs.setInt(key, defaultValue);
    return prefs.getInt(key);
  }

  Future<bool> saveStringList(List<String> playList) async {
    var prefs = await SharedPreferences.getInstance();
    return prefs.setStringList(key, playList);
  }

  Future<List<String>> getStringList() async {
    var prefs = await SharedPreferences.getInstance();
    if (prefs.getStringList(key) == null) {
      await prefs.setStringList(key, []);
    }
    return prefs.getStringList(key);
  }

  Future<bool> saveString(String string) async {
    var prefs = await SharedPreferences.getInstance();
    return prefs.setString(key, string);
  }

  Future<String> getString() async {
    var prefs = await SharedPreferences.getInstance();
    if (prefs.getString(key) == null) {
      await prefs.setString(key, '');
    }
    return prefs.getString(key);
  }

  Future<bool> saveMenu(List<int> list) async {
    var prefs = await SharedPreferences.getInstance();
    return await prefs.setStringList(
        key, list.map((e) => e.toString()).toList());
  }

  Future<List<int>> getMenu() async {
    var prefs = await SharedPreferences.getInstance();
    if (prefs.getStringList(key) == null || prefs.getStringList(key).isEmpty) {
      await prefs.setStringList(key, ['0', '1', '2', '13', '14', '15']);
    }
    var list = prefs.getStringList(key);
    if (list.length == 5) list = [...list, '15'];
    return list.map(int.parse).toList();
  }

  /// For player speed settings.
  Future<bool> saveSpeedList(List<double> list) async {
    var prefs = await SharedPreferences.getInstance();
    list.sort();
    return await prefs.setStringList(
        key, list.map((e) => e.toStringAsFixed(1)).toList());
  }

  Future<List<double>> getSpeedList() async {
    var prefs = await SharedPreferences.getInstance();
    if (prefs.getStringList(key) == null || prefs.getStringList(key).isEmpty) {
      await prefs.setStringList(
          key, ['0.5', '0.6', '0.8', '1.0', '1.1', '1.2', '1.5', '2.0']);
    }
    var list = prefs.getStringList(key);
    return list.map(double.parse).toList();
  }

  /// Rreverse is used for compatite bool value save before which set true = 0, false = 1
  Future<bool> getBool(
      {@required bool defaultValue, bool reverse = false}) async {
    var prefs = await SharedPreferences.getInstance();
    if (prefs.getInt(key) == null) {
      reverse
          ? await prefs.setInt(key, defaultValue ? 0 : 1)
          : await prefs.setInt(key, defaultValue ? 1 : 0);
    }
    var i = prefs.getInt(key);
    return reverse ? i == 0 : i == 1;
  }

  /// Rreverse is used for compatite bool value save before which set true = 0, false = 1
  Future<bool> saveBool(boo, {reverse = false}) async {
    var prefs = await SharedPreferences.getInstance();
    return reverse
        ? prefs.setInt(key, boo ? 0 : 1)
        : prefs.setInt(key, boo ? 1 : 0);
  }

  Future<bool> saveDouble(double data) async {
    var prefs = await SharedPreferences.getInstance();
    return prefs.setDouble(key, data);
  }

  Future<double> getDouble({double defaultValue = 0.0}) async {
    var prefs = await SharedPreferences.getInstance();
    if (prefs.getDouble(key) == null) {
      await prefs.setDouble(key, defaultValue);
    }
    return prefs.getDouble(key);
  }

  Future<void> addList(List<String> addList) async {
    final list = await getStringList();
    await saveStringList(list..addAll(addList));
  }

  Future<void> clearList() async {
    await saveStringList([]);
  }
}