feat(llc,core,ui): send used package in the headers

packages/stream_chat/lib/src/client/client.dart

@@ -25,7 +25,6 @@ import 'package:stream_chat/src/core/models/member.dart';
 import 'package:stream_chat/src/core/models/message.dart';
 import 'package:stream_chat/src/core/models/own_user.dart';
 import 'package:stream_chat/src/core/models/user.dart';
-import 'package:stream_chat/src/core/platform_detector/platform_detector.dart';
 import 'package:stream_chat/src/core/util/utils.dart';
 import 'package:stream_chat/src/db/chat_persistence_client.dart';
 import 'package:stream_chat/src/event_type.dart';
@@ -44,10 +43,6 @@ final _levelEmojiMapper = {
   Level.SEVERE: '🚨',
 };
 
-final _userAgent = 'stream-chat-dart-client-'
-    '${CurrentPlatform.name}-'
-    '${PACKAGE_VERSION.split('+')[0]}';
-
 /// The official Dart client for Stream Chat,
 /// a service for building chat applications.
 /// This library can be used on any Dart project and on both mobile and web apps
@@ -86,7 +81,7 @@ class StreamChatClient {
       location: location,
       connectTimeout: connectTimeout,
       receiveTimeout: receiveTimeout,
-      headers: {'X-Stream-Client': _userAgent},
+      headers: {'X-Stream-Client': defaultUserAgent},
     );
 
     _chatApi = chatApi ??
@@ -106,7 +101,7 @@ class StreamChatClient {
           tokenManager: _tokenManager,
           handler: handleEvent,
           logger: detachedLogger('🔌'),
-          queryParameters: {'X-Stream-Client': _userAgent},
+          queryParameters: {'X-Stream-Client': defaultUserAgent},
         );
 
     _retryPolicy = retryPolicy ??

packages/stream_chat/lib/src/core/http/interceptor/user_agent_interceptor.dart

@@ -0,0 +1,20 @@
+import 'package:dio/dio.dart';
+import 'package:stream_chat/src/core/platform_detector/platform_detector.dart';
+import 'package:stream_chat/version.dart';
+
+/// User agent interceptor that sets the user agent header
+class UserAgentInterceptor extends Interceptor {
+  final _defaultUserAgent = 'stream-chat-dart-client-'
+      '${CurrentPlatform.name}-'
+      '${PACKAGE_VERSION.split('+')[0]}';
+
+  @override
+  Future<void> onRequest(
+    RequestOptions options,
+    RequestInterceptorHandler handler,
+  ) async {
+    options.headers['X-Stream-Client'] =
+        '$_defaultUserAgent-${usedPackage.name}';
+    return handler.next(options);
+  }
+}

packages/stream_chat/lib/src/core/http/stream_http_client.dart

@@ -8,6 +8,7 @@ import 'package:stream_chat/src/core/http/connection_id_manager.dart';
 import 'package:stream_chat/src/core/http/interceptor/auth_interceptor.dart';
 import 'package:stream_chat/src/core/http/interceptor/connection_id_interceptor.dart';
 import 'package:stream_chat/src/core/http/interceptor/logging_interceptor.dart';
+import 'package:stream_chat/src/core/http/interceptor/user_agent_interceptor.dart';
 import 'package:stream_chat/src/core/http/stream_chat_dio_error.dart';
 import 'package:stream_chat/src/core/http/token_manager.dart';
 import 'package:stream_chat/src/location.dart';
@@ -41,6 +42,7 @@ class StreamHttpClient {
         ..._options.headers,
       }
       ..interceptors.addAll([
+        UserAgentInterceptor(),
         if (tokenManager != null) AuthInterceptor(this, tokenManager),
         if (connectionIdManager != null)
           ConnectionIdInterceptor(connectionIdManager),

packages/stream_chat/lib/version.dart

@@ -1,6 +1,40 @@
 import 'package:stream_chat/src/client/client.dart';
+import 'package:stream_chat/src/core/platform_detector/platform_detector.dart';
 
 /// Current package version
 /// Used in [StreamChatClient] to build the `x-stream-client` header
 // ignore: constant_identifier_names
 const PACKAGE_VERSION = '3.2.0';
+
+/// Default user agent used for the 'x-stream-client' header
+final defaultUserAgent = 'stream-chat-dart-client-'
+    '${CurrentPlatform.name}-'
+    '${PACKAGE_VERSION.split('+')[0]}';
+
+/// Current used package
+/// This is used to set the `x-stream-client` header using info about
+/// the package in use
+/// For example: llc/core/ui
+Package usedPackage = Package.llc;
+
+/// Possible packages
+enum Package {
+  /// The Low Level Client
+  llc,
+
+  /// The Core package
+  core,
+
+  /// The UI package
+  ui,
+}
+
+///
+extension XPackage on Package {
+  ///
+  String get name => {
+        Package.llc: 'llc',
+        Package.core: 'core',
+        Package.ui: 'ui',
+      }[this]!;
+}

packages/stream_chat_flutter/lib/src/stream_chat.dart

@@ -4,6 +4,7 @@ import 'package:flutter/foundation.dart';
 import 'package:flutter/material.dart';
 import 'package:flutter_portal/flutter_portal.dart';
 import 'package:jiffy/jiffy.dart';
+import 'package:stream_chat/version.dart';
 import 'package:stream_chat_flutter/src/stream_chat_theme.dart';
 import 'package:stream_chat_flutter/stream_chat_flutter.dart';
 import 'package:stream_chat_flutter_core/stream_chat_flutter_core.dart';
@@ -110,7 +111,12 @@ class StreamChatState extends State<StreamChat> {
                 onBackgroundEventReceived: widget.onBackgroundEventReceived,
                 backgroundKeepAlive: widget.backgroundKeepAlive,
                 connectivityStream: widget.connectivityStream,
-                child: widget.child ?? const Offstage(),
+                child: Builder(
+                  builder: (context) {
+                    usedPackage = Package.ui;
+                    return widget.child ?? const Offstage();
+                  },
+                ),
               ),
             );
           },

packages/stream_chat_flutter_core/example/lib/main.dart

@@ -4,7 +4,7 @@ import 'package:stream_chat_flutter_core/stream_chat_flutter_core.dart';
 Future<void> main() async {
   /// Create a new instance of [StreamChatClient] passing the apikey obtained
   /// from your project dashboard.
-  final client = StreamChatClient('b67pax5b2wdq');
+  final client = StreamChatClient('b67pax5b2wdq', logLevel: Level.INFO);
 
   /// Set the current user. In a production scenario, this should be done using
   /// a backend to generate a user token using our server SDK.
@@ -120,7 +120,7 @@ class HomeScreen extends StatelessWidget {
                 itemBuilder: (BuildContext context, int index) {
                   final _item = channels[index];
                   return ListTile(
-                    title: Text(_item.name!),
+                    title: Text(_item.name ?? ''),
                     subtitle: StreamBuilder<Message?>(
                       stream: _item.state!.lastMessageStream,
                       initialData: _item.state!.lastMessage,

packages/stream_chat_flutter_core/lib/src/stream_chat_core.dart

@@ -4,6 +4,7 @@ import 'package:connectivity_plus/connectivity_plus.dart';
 import 'package:flutter/foundation.dart';
 import 'package:flutter/material.dart';
 import 'package:stream_chat/stream_chat.dart';
+import 'package:stream_chat/version.dart';
 import 'package:stream_chat_flutter_core/src/typedef.dart';
 
 /// Widget used to provide information about the chat to the widget tree.
@@ -89,6 +90,11 @@ class StreamChatCore extends StatefulWidget {
 /// State class associated with [StreamChatCore].
 class StreamChatCoreState extends State<StreamChatCore>
     with WidgetsBindingObserver {
+  /// Constructor used for creating a new instance of [StreamChatCoreState].
+  StreamChatCoreState() {
+    usedPackage = Package.core;
+  }
+
   /// Initialized client used throughout the application.
   StreamChatClient get client => widget.client;