72 lines
1.7 KiB
Dart
72 lines
1.7 KiB
Dart
import 'dart:convert';
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import 'package:html/dom.dart';
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import 'package:html/parser.dart' as parser;
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import '../../extensions/helpers_extension.dart';
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import '../../retry.dart';
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import '../youtube_http_client.dart';
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///
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class EmbedPage {
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static final _playerConfigExp =
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RegExp('[\'"]PLAYER_CONFIG[\'"]\\s*:\\s*(\\{.*\\})');
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final Document _root;
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_PlayerConfig _playerConfig;
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String __playerConfigJson;
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///
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String get sourceUrl {
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var url = _root.querySelector('*[name="player_ias/base"]').attributes['src'];
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if (url == null) {
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return null;
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}
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return 'https://youtube.com$url';
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}
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///
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_PlayerConfig get playerconfig {
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if (_playerConfig != null) {
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return _playerConfig;
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}
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var playerConfigJson = _playerConfigJson;
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if (playerConfigJson == null) {
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return null;
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}
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return _playerConfig =
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_PlayerConfig(json.decode(playerConfigJson.extractJson()));
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}
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String get _playerConfigJson => __playerConfigJson ??= _root
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.getElementsByTagName('script')
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.map((e) => e.text)
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.map((e) => _playerConfigExp.firstMatch(e)?.group(1))
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.firstWhere((e) => !e.isNullOrWhiteSpace, orElse: () => null);
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///
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EmbedPage(this._root);
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///
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EmbedPage.parse(String raw) : _root = parser.parse(raw);
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///
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static Future<EmbedPage> get(YoutubeHttpClient httpClient, String videoId) {
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var url = 'https://youtube.com/embed/$videoId?hl=en';
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return retry(() async {
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var raw = await httpClient.getString(url);
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return EmbedPage.parse(raw);
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});
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}
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}
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class _PlayerConfig {
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// Json parsed map.
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final Map<String, dynamic> _root;
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_PlayerConfig(this._root);
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String get sourceUrl => 'https://youtube.com${_root['assets']['js']}';
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}
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