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.
This commit is contained in:
Alma Alexyz
@@ -0,0 +1,267 @@
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import 'package:flutter/material.dart';
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import 'dart:ui';
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import '../g4f/client.dart';
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import '../g4f/models.dart';
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class OracleChatScreen extends StatefulWidget {
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const OracleChatScreen({Key? key}) : super(key: key);
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@override
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State<OracleChatScreen> createState() => _OracleChatScreenState();
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}
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class ChatMessage {
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final String text;
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final bool isUser;
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ChatMessage({required this.text, required this.isUser});
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}
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class _OracleChatScreenState extends State<OracleChatScreen> {
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final TextEditingController _controller = TextEditingController();
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final ScrollController _scrollController = ScrollController();
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final G4FClient _client = G4FClient();
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final List<ChatMessage> _messages = [
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ChatMessage(
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text: "Я Оракул. Мой взор проникает сквозь завесу времени. О чем ты хочешь спросить?",
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isUser: false
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),
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];
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bool _isLoading = false;
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void _scrollToBottom() {
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WidgetsBinding.instance.addPostFrameCallback((_) {
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if (_scrollController.hasClients) {
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_scrollController.animateTo(
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_scrollController.position.maxScrollExtent,
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duration: const Duration(milliseconds: 300),
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curve: Curves.easeOut,
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);
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}
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});
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}
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static const _oracleSystem = Message(
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role: Role.system,
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content:
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'Ты — Великий Оракул 999, древний архетипический разум. '
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'Стиль речи: глубокий, философский, лаконичный, без банальностей. '
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'Отвечай на языке вопрошающего. Не упоминай модели, провайдеров и технические сбои.',
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);
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Future<void> _sendMessage() async {
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final text = _controller.text.trim();
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if (text.isEmpty || _isLoading) return;
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setState(() {
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_messages.add(ChatMessage(text: text, isUser: true));
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_messages.add(ChatMessage(text: '', isUser: false));
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_isLoading = true;
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});
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_controller.clear();
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_scrollToBottom();
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final apiMessages = <Message>[
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_oracleSystem,
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for (final m in _messages)
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if (m.text.trim().isNotEmpty)
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Message(
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role: m.isUser ? Role.user : Role.assistant,
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content: m.text,
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),
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];
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try {
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final reply = await _client.chat.completions.create(
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model: G4FModels.gpt4o,
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messages: apiMessages,
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);
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if (!mounted) return;
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_setLastOracleText(
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reply.trim().isEmpty
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? 'Мой взор затуманен. Знаки молчат. Спроси ещё раз.'
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: reply.trim(),
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);
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} catch (_) {
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if (!mounted) return;
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_setLastOracleText('Мой взор затуманен. Связь прервалась.');
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} finally {
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if (mounted) {
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setState(() => _isLoading = false);
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_scrollToBottom();
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}
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}
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}
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void _setLastOracleText(String text) {
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setState(() {
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_messages[_messages.length - 1] = ChatMessage(text: text, isUser: false);
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});
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}
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@override
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Widget build(BuildContext context) {
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return Scaffold(
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backgroundColor: const Color(0xFF060B19),
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appBar: AppBar(
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title: const Text("Оракул", style: TextStyle(color: Color(0xFFFFD700), fontWeight: FontWeight.w300, letterSpacing: 2.0)),
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backgroundColor: Colors.transparent,
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elevation: 0,
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centerTitle: true,
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iconTheme: const IconThemeData(color: Color(0xFFFFD700)),
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),
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extendBodyBehindAppBar: true,
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body: Container(
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decoration: const BoxDecoration(
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gradient: LinearGradient(
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begin: Alignment.topCenter,
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end: Alignment.bottomCenter,
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colors: [Color(0xFF0D0415), Color(0xFF060B19)],
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),
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),
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child: SafeArea(
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child: Column(
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children: [
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Expanded(
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child: ListView.builder(
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controller: _scrollController,
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padding: const EdgeInsets.symmetric(horizontal: 16, vertical: 20),
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itemCount: _messages.length,
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itemBuilder: (context, index) {
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final msg = _messages[index];
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return _buildMessageBubble(msg);
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},
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),
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),
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if (_isLoading)
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const Padding(
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padding: EdgeInsets.all(8.0),
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child: SizedBox(
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width: 20,
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height: 20,
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child: CircularProgressIndicator(
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color: Color(0xFFFFD700),
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strokeWidth: 2,
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),
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),
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),
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_buildInputArea(),
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],
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),
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),
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),
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);
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}
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Widget _buildMessageBubble(ChatMessage message) {
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return Align(
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alignment: message.isUser ? Alignment.centerRight : Alignment.centerLeft,
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child: Container(
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margin: const EdgeInsets.only(bottom: 16.0),
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constraints: BoxConstraints(maxWidth: MediaQuery.of(context).size.width * 0.8),
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child: ClipRRect(
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borderRadius: BorderRadius.only(
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topLeft: const Radius.circular(20),
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topRight: const Radius.circular(20),
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bottomLeft: Radius.circular(message.isUser ? 20 : 5),
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bottomRight: Radius.circular(message.isUser ? 5 : 20),
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),
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child: BackdropFilter(
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filter: ImageFilter.blur(sigmaX: 10, sigmaY: 10),
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child: Container(
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padding: const EdgeInsets.symmetric(horizontal: 18, vertical: 14),
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decoration: BoxDecoration(
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color: message.isUser
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? const Color(0xFF1E293B).withOpacity(0.6)
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: const Color(0xFF2E1A47).withOpacity(0.4),
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border: Border.all(
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color: message.isUser
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? Colors.white.withOpacity(0.1)
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: const Color(0xFFFFD700).withOpacity(0.2),
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width: 1,
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),
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),
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child: Text(
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message.text,
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style: TextStyle(
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color: message.isUser ? Colors.white : const Color(0xFFE5E7EB),
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fontSize: 16,
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height: 1.4,
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),
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),
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),
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),
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),
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),
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);
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}
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Widget _buildInputArea() {
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return Container(
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padding: const EdgeInsets.only(left: 16, right: 16, top: 12, bottom: 24),
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decoration: BoxDecoration(
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color: const Color(0xFF0D0415).withOpacity(0.8),
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border: Border(
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top: BorderSide(
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color: const Color(0xFFFFD700).withOpacity(0.2),
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width: 1,
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),
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),
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),
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child: Row(
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children: [
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Expanded(
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child: Container(
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decoration: BoxDecoration(
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color: Colors.white.withOpacity(0.05),
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borderRadius: BorderRadius.circular(30),
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border: Border.all(color: Colors.white.withOpacity(0.1)),
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),
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child: TextField(
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controller: _controller,
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style: const TextStyle(color: Colors.white),
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decoration: const InputDecoration(
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hintText: "Спроси Оракула...",
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hintStyle: TextStyle(color: Colors.white38),
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border: InputBorder.none,
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contentPadding: EdgeInsets.symmetric(horizontal: 20, vertical: 14),
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),
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textInputAction: TextInputAction.send,
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onSubmitted: (_) => _sendMessage(),
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),
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),
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),
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const SizedBox(width: 12),
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GestureDetector(
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onTap: _isLoading ? null : _sendMessage,
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child: Container(
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padding: const EdgeInsets.all(14),
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decoration: BoxDecoration(
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shape: BoxShape.circle,
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gradient: const RadialGradient(
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colors: [Color(0xFFFFD700), Color(0xFFB8860B)],
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center: Alignment.topLeft,
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radius: 1.0,
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),
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boxShadow: [
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BoxShadow(
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color: const Color(0xFFFFD700).withOpacity(0.3),
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blurRadius: 12,
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spreadRadius: 2,
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),
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],
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),
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child: const Icon(
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Icons.auto_awesome,
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color: Color(0xFF2E1A47),
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size: 24,
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),
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),
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),
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],
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),
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);
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}
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}
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