-
-
Notifications
You must be signed in to change notification settings - Fork 7
Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
Merge pull request #192 from LezdCS/develop
feat/youtube-chat
- Loading branch information
Showing
11 changed files
with
378 additions
and
42 deletions.
There are no files selected for viewing
Loading
Sorry, something went wrong. Reload?
Sorry, we cannot display this file.
Sorry, this file is invalid so it cannot be displayed.
Loading
Sorry, something went wrong. Reload?
Sorry, we cannot display this file.
Sorry, this file is invalid so it cannot be displayed.
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,189 @@ | ||
| import 'dart:async'; | ||
| import 'dart:convert'; | ||
| import 'package:html/dom.dart'; | ||
| import 'package:http/http.dart' as http; | ||
| import 'package:html/parser.dart' as parser; | ||
| import 'package:http/http.dart'; | ||
| import 'package:irllink/src/core/utils/globals.dart' as globals; | ||
| import 'package:irllink/src/domain/entities/chat/chat_message.dart'; | ||
|
|
||
| class YoutubeChat { | ||
| String videoId; | ||
|
|
||
| final StreamController _chatStreamController = StreamController.broadcast(); | ||
| Stream get chatStream => _chatStreamController.stream; | ||
|
|
||
| YoutubeChat( | ||
| this.videoId, | ||
| ); | ||
|
|
||
| void closeStream() { | ||
| _chatStreamController.close(); | ||
| } | ||
|
|
||
| // Function to fetch the initial continuation token | ||
| Future<String?> fetchInitialContinuationToken() async { | ||
| var headers = { | ||
| 'accept': | ||
| 'text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.7', | ||
| 'accept-language': 'en-US,en;q=0.9', | ||
| 'cache-control': 'no-cache', | ||
| 'pragma': 'no-cache', | ||
| 'user-agent': | ||
| 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/123.0.0.0 Safari/537.36' | ||
| }; | ||
|
|
||
| String url = 'https://www.youtube.com/live_chat?is_popout=1&v=$videoId'; | ||
| try { | ||
| Response response = await http.get(Uri.parse(url), headers: headers); | ||
| Document document = parser.parse(response.body); | ||
| List<Element> scripts = document.getElementsByTagName('script'); | ||
| Element ytInitialDataScript = scripts | ||
| .firstWhere((script) => script.innerHtml.contains('ytInitialData')); | ||
| String scriptContent = ytInitialDataScript.innerHtml; | ||
| // Extracting ytInitialData JSON from the script tag | ||
| int dataStart = scriptContent.indexOf('{'); | ||
| int dataEnd = scriptContent.lastIndexOf('}') + 1; | ||
| String jsonString = scriptContent.substring(dataStart, dataEnd); | ||
| dynamic ytInitialData = json.decode(jsonString); | ||
|
|
||
| // Extract continuation token from ytInitialData | ||
| dynamic continuation = ytInitialData['contents']['liveChatRenderer'] | ||
| ['continuations'][0]['invalidationContinuationData']['continuation']; | ||
| return continuation; | ||
| } catch (error) { | ||
| globals.talker | ||
| ?.error('Error fetching initial continuation token: $error'); | ||
| return null; | ||
| } | ||
| } | ||
|
|
||
| Future<String?> fetchChatMessages(String? continuationToken) async { | ||
| String body = json.encode({ | ||
| 'context': { | ||
| 'client': { | ||
| 'hl': 'en', | ||
| 'gl': 'JP', | ||
| 'remoteHost': '123.123.123.123', | ||
| 'userAgent': | ||
| 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/123.0.0.0 Safari/537.36', | ||
| 'clientName': 'WEB', | ||
| 'clientVersion': '2.20240411.09.00', | ||
| }, | ||
| 'user': {'lockedSafetyMode': false} | ||
| }, | ||
| 'continuation': continuationToken | ||
| }); | ||
|
|
||
| Map<String, Map<String, String>> options = { | ||
| 'headers': {'Content-Type': 'application/json'}, | ||
| }; | ||
|
|
||
| const url = | ||
| 'https://www.youtube.com/youtubei/v1/live_chat/get_live_chat?prettyPrint=false'; | ||
|
|
||
| try { | ||
| Response response = await http.post(Uri.parse(url), | ||
| headers: options['headers'], body: body); | ||
| dynamic data = json.decode(response.body); | ||
|
|
||
|
|
||
| Iterable<dynamic>? messagesData = (data['continuationContents'] | ||
| ['liveChatContinuation']['actions'] as List?) | ||
| ?.map((action) => (action['addChatItemAction']['item'] | ||
| ['liveChatTextMessageRenderer'])); | ||
|
|
||
| messagesData?.forEach((message) { | ||
| if(message['message'] == null) return; | ||
| List? messages = (message['message']['runs'] as List?) | ||
| ?.map((run) => run['text']) | ||
| .where((message) => message != null) | ||
| .toList(); | ||
| if(messages == null) return; | ||
| if(messages.isEmpty) return; | ||
| ChatMessage msg = ChatMessage.fromYoutube(message, messages, videoId); | ||
| _chatStreamController.add(msg); | ||
| }); | ||
|
|
||
| dynamic newContinuationToken = data['continuationContents'] | ||
| ['liveChatContinuation']['continuations'][0] | ||
| ['invalidationContinuationData']['continuation']; | ||
| if (newContinuationToken == null) { | ||
| globals.talker?.info('No continuation token found, terminating.'); | ||
| return null; | ||
| } | ||
| return newContinuationToken; | ||
| } catch (error) { | ||
| globals.talker?.error('Error fetching chat messages: $error'); | ||
| return continuationToken; // Retry with the same token | ||
| } | ||
| } | ||
|
|
||
| Future<void> startFetchingChat() async { | ||
| var continuationToken = await fetchInitialContinuationToken(); | ||
| if (continuationToken == null) { | ||
| globals.talker?.error('Failed to fetch initial continuation token.'); | ||
| return; | ||
| } | ||
|
|
||
| while (continuationToken != null) { | ||
| if(_chatStreamController.isClosed) return; | ||
| continuationToken = await fetchChatMessages(continuationToken); | ||
| await Future.delayed(const Duration(seconds: 5)); // 5-second pause | ||
| } | ||
| } | ||
| } | ||
|
|
||
| Future<String?> getLiveVideoId(String channelURL) async { | ||
| // Send GET request to the YouTube channel's live streams page | ||
| var response = await http.get(Uri.parse(channelURL)); | ||
| if (response.statusCode != 200) { | ||
| globals.talker?.error( | ||
| 'Failed to retrieve the page. Status code: ${response.statusCode}'); | ||
| return null; | ||
| } | ||
|
|
||
| // Extract the ytInitialData JSON data from the page content | ||
| var match = RegExp(r'ytInitialData\s*=\s*({.*?});</script>') | ||
| .firstMatch(response.body); | ||
| if (match == null) { | ||
| globals.talker?.error('Failed to find ytInitialData in the page content.'); | ||
| return null; | ||
| } | ||
|
|
||
| var ytInitialData = json.decode(match.group(1)!); | ||
|
|
||
| // Navigate through the JSON data to find the live video ID | ||
| try { | ||
| var tabs = | ||
| ytInitialData['contents']['twoColumnBrowseResultsRenderer']['tabs']; | ||
| for (var tab in tabs) { | ||
| if (tab is Map && | ||
| tab['tabRenderer'] != null && | ||
| tab['tabRenderer']['selected'] != null && | ||
| tab['tabRenderer']['content'] != null) { | ||
| var contents = | ||
| tab['tabRenderer']['content']['richGridRenderer']['contents']; | ||
| for (var content in contents) { | ||
| if (content is Map && | ||
| content['richItemRenderer'] != null && | ||
| content['richItemRenderer']['content'] != null && | ||
| content['richItemRenderer']['content']['videoRenderer'] != null && | ||
| content['richItemRenderer']['content']['videoRenderer'] | ||
| ['upcomingEventData'] == | ||
| null) { | ||
| var videoId = content['richItemRenderer']['content'] | ||
| ['videoRenderer']['videoId']; | ||
| return videoId; | ||
| } | ||
| } | ||
| } | ||
| } | ||
| } catch (e) { | ||
| globals.talker?.error('Error parsing ytInitialData: $e'); | ||
| return null; | ||
| } | ||
|
|
||
| globals.talker?.info('No live video found.'); | ||
| return null; | ||
| } |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Oops, something went wrong.