104 lines
2.6 KiB
Dart
104 lines
2.6 KiB
Dart
import 'dart:convert';
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import '../../exceptions/exceptions.dart';
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import '../../retry.dart';
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import '../youtube_http_client.dart';
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class PlaylistResponse {
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// Json parsed map
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final Map<String, dynamic> _root;
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PlaylistResponse(this._root);
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String get title => _root['title'];
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String get author => _root['author'];
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String get description => _root['description'];
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int get viewCount => int.tryParse(_root['views'] ?? '');
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int get likeCount => int.tryParse(_root['likes']);
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int get dislikeCount => int.tryParse(_root['dislikes']);
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Iterable<_Video> get videos =>
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_root['video']?.map((e) => _Video(e)) ?? const [];
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PlaylistResponse.parse(String raw) : _root = json.tryDecode(raw) {
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if (_root == null) {
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throw TransientFailureException('Playerlist response is broken.');
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}
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}
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static Future<PlaylistResponse> get(YoutubeHttpClient httpClient, String id,
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{int index = 0}) {
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var url =
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'https://youtube.com/list_ajax?style=json&action_get_list=1&list=$id&index=$index&hl=en';
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return retry(() async {
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var raw = await httpClient.getString(url);
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return PlaylistResponse.parse(raw);
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});
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}
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static Future<PlaylistResponse> searchResults(
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YoutubeHttpClient httpClient, String query,
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{int page = 0}) {
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var url = 'https://youtube.com/search_ajax?style=json&search_query='
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'${Uri.encodeQueryComponent(query)}&page=$page&hl=en';
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return retry(() async {
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var raw = await httpClient.getString(url, validate: false);
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return PlaylistResponse.parse(raw);
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});
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}
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}
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class _Video {
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// Json parsed map
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final Map<String, dynamic> _root;
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_Video(this._root);
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String get id => _root['encrypted_id'];
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String get author => _root['author'];
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//TODO: Check if date is correctS
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DateTime get uploadDate =>
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DateTime.fromMillisecondsSinceEpoch(_root['time_created'] * 1000);
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String get title => _root['title'];
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String get description => _root['description'];
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Duration get duration => Duration(seconds: _root['length_seconds']);
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int get viewCount => int.parse(_root['views'].stripNonDigits());
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int get likes => int.parse(_root['likes']);
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int get dislikes => int.parse(_root['dislikes']);
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Iterable<String> get keywords => RegExp(r'"[^\"]+"|\S+')
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.allMatches(_root['keywords'])
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.map((e) => e.group(0))
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.toList(growable: false);
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}
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extension on String {
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static final _exp = RegExp(r'\D');
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/// Strips out all non digit characters.
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String stripNonDigits() => replaceAll(_exp, '');
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}
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extension on JsonCodec {
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dynamic tryDecode(String source) {
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try {
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return json.decode(source);
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} on FormatException {
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return null;
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}
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}
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}
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