132 lines
3.4 KiB
Dart
132 lines
3.4 KiB
Dart
import 'package:html/parser.dart' as parser;
|
|
|
|
import '../../exceptions/exceptions.dart';
|
|
import '../../extensions/helpers_extension.dart';
|
|
import '../../retry.dart';
|
|
import '../models/initial_data.dart';
|
|
import '../models/youtube_page.dart';
|
|
import '../youtube_http_client.dart';
|
|
|
|
///
|
|
class ChannelPage extends YoutubePage<_InitialData> {
|
|
///
|
|
bool get isOk => root!.querySelector('meta[property="og:url"]') != null;
|
|
|
|
///
|
|
String get channelUrl =>
|
|
root!.querySelector('meta[property="og:url"]')?.attributes['content'] ??
|
|
'';
|
|
|
|
///
|
|
String get channelId => channelUrl.substringAfter('channel/');
|
|
|
|
///
|
|
String get channelTitle =>
|
|
root!.querySelector('meta[property="og:title"]')?.attributes['content'] ??
|
|
'';
|
|
|
|
///
|
|
String get channelLogoUrl =>
|
|
root!.querySelector('meta[property="og:image"]')?.attributes['content'] ??
|
|
'';
|
|
|
|
String get channelBannerUrl => initialData.bannerUrl ?? '';
|
|
|
|
int? get subscribersCount => initialData.subscribersCount;
|
|
|
|
///
|
|
ChannelPage.parse(String raw)
|
|
: super(parser.parse(raw), (root) => _InitialData(root));
|
|
|
|
///
|
|
static Future<ChannelPage> get(YoutubeHttpClient httpClient, String id) {
|
|
var url = 'http://127.0.0.1:8080/www.youtube.com:443/channel/$id?hl=en';
|
|
|
|
return retry(httpClient, () async {
|
|
var raw = await httpClient.getString(url);
|
|
var result = ChannelPage.parse(raw);
|
|
|
|
if (!result.isOk) {
|
|
throw TransientFailureException('Channel page is broken');
|
|
}
|
|
return result;
|
|
});
|
|
}
|
|
|
|
///
|
|
static Future<ChannelPage> getByUsername(
|
|
YoutubeHttpClient httpClient, String username) {
|
|
var url = 'http://127.0.0.1:8080/www.youtube.com:443/user/$username?hl=en';
|
|
|
|
return retry(httpClient, () async {
|
|
try {
|
|
var raw = await httpClient.getString(url);
|
|
var result = ChannelPage.parse(raw);
|
|
|
|
if (!result.isOk) {
|
|
throw TransientFailureException('Channel page is broken');
|
|
}
|
|
return result;
|
|
} on FatalFailureException catch (e) {
|
|
if (e.statusCode != 404) {
|
|
rethrow;
|
|
}
|
|
url = 'http://127.0.0.1:8080/www.youtube.com:443/c/$username?hl=en';
|
|
}
|
|
throw FatalFailureException('', 0);
|
|
});
|
|
}
|
|
}
|
|
|
|
class _InitialData extends InitialData {
|
|
static final RegExp _subCountExp = RegExp(r'(\d+(?:\.\d+)?)(K|M|\s)');
|
|
|
|
_InitialData(JsonMap root) : super(root);
|
|
|
|
int? get subscribersCount {
|
|
final renderer = root.get('header')?.get('c4TabbedHeaderRenderer');
|
|
if (renderer?['subscriberCountText'] == null) {
|
|
return null;
|
|
}
|
|
final subText =
|
|
renderer?.get('subscriberCountText')?.getT<String>('simpleText');
|
|
if (subText == null) {
|
|
return null;
|
|
}
|
|
final match = _subCountExp.firstMatch(subText);
|
|
if (match == null) {
|
|
return null;
|
|
}
|
|
if (match.groupCount != 2) {
|
|
return null;
|
|
}
|
|
|
|
final count = double.tryParse(match.group(1) ?? '');
|
|
if (count == null) {
|
|
return null;
|
|
}
|
|
|
|
final multiplierText = match.group(2);
|
|
if (multiplierText == null) {
|
|
return null;
|
|
}
|
|
|
|
var multiplier = 1;
|
|
if (multiplierText == 'K') {
|
|
multiplier = 1000;
|
|
} else if (multiplierText == 'M') {
|
|
multiplier = 1000000;
|
|
}
|
|
|
|
return (count * multiplier).toInt();
|
|
}
|
|
|
|
String? get bannerUrl => root
|
|
.get('header')
|
|
?.get('c4TabbedHeaderRenderer')
|
|
?.get('banner')
|
|
?.getList('thumbnails')
|
|
?.first
|
|
.getT<String>('url');
|
|
}
|