feat: embed a Flutter G4F client with Cronet, cookie jar, and origin WebView

Port the Oracle off the Python g4f container onto on-device providers: Chromium HTTP via Cronet, a shared cookie session, IterList retry, hosted OpenAI-compat aggregators, and same-origin WebView fallbacks instead of CORS fetch.
2026-09-01 22:05:38 +05:00
parent f3e7412cf9
commit fbf04d90db
49 changed files with 4856 additions and 92 deletions
@@ -0,0 +1,63 @@
+import 'dart:convert';
+import 'package:http/http.dart' as http;
+import '../http_client.dart';
+import '../models.dart';
+import 'base_provider.dart';
+
+class AiChatOs extends BaseProvider {
+  @override
+  String get name => 'AiChatOs';
+
+  @override
+  bool get working => true;
+
+  @override
+  List<String> get models => [G4FModels.gpt4];
+
+  @override
+  String get defaultModel => G4FModels.gpt4;
+
+  @override
+  Stream<String> createAsyncGenerator(
+    String model,
+    List<Message> messages, {
+    bool stream = false,
+  }) async* {
+    final url = Uri.parse('https://api.aichatos.cloud/api/generateStream');
+    final userId = '#/chat/${DateTime.now().millisecondsSinceEpoch}';
+
+    final systemMessage = extractSystemMessage(messages);
+    final formattedPrompt = formatPrompt(messages);
+
+    final req = http.Request('POST', url);
+    req.headers.addAll({
+      'Content-Type': 'application/json',
+      'Origin': 'https://chat.aichatos.top',
+      'Referer': 'https://chat.aichatos.top/',
+      'User-Agent': 'Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/131.0.0.0 Safari/537.36',
+    });
+
+    req.body = jsonEncode({
+      'prompt': formattedPrompt,
+      'userId': userId,
+      'network': true,
+      'system': systemMessage,
+      'withoutContext': false,
+      'stream': stream,
+    });
+
+    final response = await g4fHttp.send(req);
+
+    if (response.statusCode == 200) {
+      final resBytes = await response.stream.toBytes();
+      final fullText = utf8.decode(resBytes).trim();
+      if (fullText.isNotEmpty && !fullText.startsWith('<!DOCTYPE') && !fullText.contains('Error:')) {
+        yield fullText;
+      } else {
+        throw Exception('$name unusable body');
+      }
+    } else {
+      throw Exception('$name returned status ${response.statusCode}');
+    }
+  }
+}