127 lines
3.6 KiB
Dart
127 lines
3.6 KiB
Dart
import 'package:dio/dio.dart';
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import 'package:freezer/api/deezer.dart';
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import 'package:freezer/api/download.dart';
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import 'package:freezer/api/definitions.dart';
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import 'package:html/parser.dart';
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import 'package:html/dom.dart';
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import 'dart:convert';
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import 'dart:async';
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SpotifyAPI spotify = SpotifyAPI();
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class SpotifyAPI {
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SpotifyPlaylist importingSpotifyPlaylist;
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StreamController importingStream = StreamController.broadcast();
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bool doneImporting;
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//Parse spotify URL to URI (spotify:track:1234)
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String parseUrl(String url) {
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Uri uri = Uri.parse(url);
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if (uri.pathSegments.length > 3) return null; //Invalid URL
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if (uri.pathSegments.length == 3) return 'spotify:${uri.pathSegments[1]}:${uri.pathSegments[2]}';
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if (uri.pathSegments.length == 2) return 'spotify:${uri.pathSegments[0]}:${uri.pathSegments[1]}';
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return null;
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}
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//Get spotify embed url from uri
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String getEmbedUrl(String uri) => 'https://embed.spotify.com/?uri=$uri';
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//Extract JSON data form spotify embed page
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Future<Map> getEmbedData(String url) async {
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//Fetch
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Dio dio = Dio();
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Response response = await dio.get(url);
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//Parse
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Document document = parse(response.data);
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Element element = document.getElementById('resource');
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return jsonDecode(element.innerHtml);
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}
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Future<SpotifyPlaylist> playlist(String uri) async {
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//Load data
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String url = getEmbedUrl(uri);
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Map data = await getEmbedData(url);
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//Parse
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SpotifyPlaylist playlist = SpotifyPlaylist.fromJson(data);
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return playlist;
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}
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Future convertPlaylist(SpotifyPlaylist playlist, {bool downloadOnly = false}) async {
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doneImporting = false;
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importingSpotifyPlaylist = playlist;
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//Create Deezer playlist
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String playlistId;
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if (!downloadOnly)
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playlistId = await deezerAPI.createPlaylist(playlist.name, description: playlist.description);
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//Search for tracks
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for (SpotifyTrack track in playlist.tracks) {
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Map deezer;
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try {
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//Search
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deezer = await deezerAPI.callPublicApi('track/isrc:' + track.isrc);
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if (deezer.containsKey('error')) throw Exception();
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String id = deezer['id'].toString();
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//Add
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if (!downloadOnly)
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await deezerAPI.addToPlaylist(id, playlistId);
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if (downloadOnly)
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await downloadManager.addOfflineTrack(Track(id: id), private: false);
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track.state = TrackImportState.OK;
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} catch (e) {
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//On error
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track.state = TrackImportState.ERROR;
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}
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//Add playlist id to stream, stream is for updating ui only
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importingStream.add(playlistId);
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importingSpotifyPlaylist = playlist;
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}
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doneImporting = true;
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//Return DEEZER playlist id
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return playlistId;
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}
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}
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class SpotifyTrack {
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String title;
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String artists;
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String isrc;
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TrackImportState state = TrackImportState.NONE;
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SpotifyTrack({this.title, this.artists, this.isrc});
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//JSON
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factory SpotifyTrack.fromJson(Map json) => SpotifyTrack(
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title: json['name'],
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artists: json['artists'].map((j) => j['name']).toList().join(', '),
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isrc: json['external_ids']['isrc']
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);
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}
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class SpotifyPlaylist {
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String name;
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String description;
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List<SpotifyTrack> tracks;
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String image;
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SpotifyPlaylist({this.name, this.description, this.tracks, this.image});
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//JSON
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factory SpotifyPlaylist.fromJson(Map json) => SpotifyPlaylist(
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name: json['name'],
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description: json['description'],
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image: json['images'][0]['url'],
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tracks: json['tracks']['items'].map<SpotifyTrack>((j) => SpotifyTrack.fromJson(j['track'])).toList()
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);
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}
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enum TrackImportState {
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NONE,
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ERROR,
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OK
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} |