461 lines
16 KiB
Dart
461 lines
16 KiB
Dart
import 'package:flutter/material.dart';
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import 'package:flutter_widget_from_html/flutter_widget_from_html.dart';
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import 'package:mymuseum_visitapp/Models/AssistantResponse.dart';
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import 'package:mymuseum_visitapp/Models/visitContext.dart';
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import 'package:mymuseum_visitapp/Services/assistantService.dart';
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import 'package:mymuseum_visitapp/constants.dart';
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import 'package:speech_to_text/speech_to_text.dart';
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String _stripHtml(String html) => html.replaceAll(RegExp(r'<[^>]*>'), '').trim();
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class AssistantChatSheet extends StatefulWidget {
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final VisitAppContext visitAppContext;
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final String? configurationId;
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final void Function(String sectionId, String sectionTitle)? onNavigateToSection;
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const AssistantChatSheet({
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Key? key,
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required this.visitAppContext,
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this.configurationId,
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this.onNavigateToSection,
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}) : super(key: key);
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static void show(
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BuildContext context, {
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required VisitAppContext visitAppContext,
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String? configurationId,
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void Function(String sectionId, String sectionTitle)? onNavigateToSection,
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}) {
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showGeneralDialog(
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context: context,
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barrierDismissible: true,
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barrierLabel: '',
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barrierColor: Colors.black54,
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transitionDuration: const Duration(milliseconds: 280),
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pageBuilder: (dialogContext, _, __) => AssistantChatSheet(
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visitAppContext: visitAppContext,
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configurationId: configurationId,
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onNavigateToSection: onNavigateToSection,
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),
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transitionBuilder: (_, animation, __, child) => SlideTransition(
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position: Tween<Offset>(begin: const Offset(0, 1), end: Offset.zero)
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.animate(CurvedAnimation(parent: animation, curve: Curves.easeOut)),
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child: child,
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),
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);
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}
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@override
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State<AssistantChatSheet> createState() => _AssistantChatSheetState();
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}
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class _AssistantChatSheetState extends State<AssistantChatSheet> {
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late AssistantService _assistantService;
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final TextEditingController _controller = TextEditingController();
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final ScrollController _scrollController = ScrollController();
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final List<Widget> _bubbles = [];
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bool _isLoading = false;
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final SpeechToText _speech = SpeechToText();
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bool _speechAvailable = false;
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bool _isListening = false;
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@override
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void initState() {
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super.initState();
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_assistantService = AssistantService(visitAppContext: widget.visitAppContext);
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_initSpeech();
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}
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Future<void> _initSpeech() async {
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final available = await _speech.initialize();
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if (mounted) setState(() => _speechAvailable = available);
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}
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Future<void> _toggleListening() async {
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if (_isListening) {
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await _speech.stop();
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setState(() => _isListening = false);
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} else {
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final locale = widget.visitAppContext.language?.toLowerCase() ?? 'fr';
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setState(() => _isListening = true);
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await _speech.listen(
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localeId: locale,
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onResult: (result) {
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setState(() => _controller.text = result.recognizedWords);
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if (result.finalResult) {
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setState(() => _isListening = false);
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}
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},
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listenOptions: SpeechListenOptions(partialResults: true),
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);
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}
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}
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@override
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void dispose() {
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_speech.cancel();
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super.dispose();
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}
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Future<void> _send() async {
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final text = _controller.text.trim();
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if (text.isEmpty || _isLoading) return;
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_controller.clear();
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setState(() {
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_bubbles.add(_ChatBubble(text: text, isUser: true));
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_isLoading = true;
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});
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_scrollToBottom();
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try {
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final response = await _assistantService.chat(
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message: text,
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configurationId: widget.configurationId,
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);
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setState(() {
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_bubbles.add(_AssistantMessage(
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response: response,
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onNavigate: widget.onNavigateToSection,
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));
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});
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} catch (e) {
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print("AssistantChatSheet error: $e");
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setState(() {
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_bubbles.add(_ChatBubble(text: "Une erreur est survenue, réessayez.", isUser: false));
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});
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} finally {
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setState(() => _isLoading = false);
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_scrollToBottom();
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}
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}
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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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@override
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Widget build(BuildContext context) {
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final height = MediaQuery.of(context).size.height * 0.9;
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return Align(
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alignment: Alignment.bottomCenter,
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child: Material(
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borderRadius: const BorderRadius.vertical(top: Radius.circular(20)),
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clipBehavior: Clip.antiAlias,
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child: SizedBox(
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height: height,
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child: Column(
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children: [
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// Header
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Padding(
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padding: const EdgeInsets.symmetric(horizontal: 16, vertical: 10),
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child: Row(
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children: [
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Icon(Icons.chat_bubble_outline, color: kMainColor1),
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const SizedBox(width: 8),
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Text("Assistant",
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style: TextStyle(
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fontSize: 18,
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fontWeight: FontWeight.w600,
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color: kSecondGrey)),
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const Spacer(),
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IconButton(
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icon: const Icon(Icons.close),
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onPressed: () => Navigator.of(context).pop(),
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),
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],
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),
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),
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const Divider(height: 1),
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// Messages
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Expanded(
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child: _bubbles.isEmpty
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? Center(
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child: Padding(
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padding: const EdgeInsets.all(24),
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child: Text(
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"Bonjour ! Posez-moi vos questions sur cette visite.",
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textAlign: TextAlign.center,
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style: TextStyle(color: Colors.grey[500], fontSize: 15),
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),
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),
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)
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: ListView.builder(
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controller: _scrollController,
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padding: const EdgeInsets.symmetric(horizontal: 12, vertical: 8),
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itemCount: _bubbles.length,
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itemBuilder: (_, i) => _bubbles[i],
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),
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),
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// Loading indicator
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if (_isLoading)
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Padding(
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padding: const EdgeInsets.symmetric(horizontal: 16, vertical: 4),
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child: Row(
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children: [
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SizedBox(
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width: 20,
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height: 20,
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child: CircularProgressIndicator(strokeWidth: 2, color: kMainColor1),
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),
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const SizedBox(width: 8),
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Text("...", style: TextStyle(color: Colors.grey[400])),
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],
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),
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),
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// Input
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Padding(
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padding: EdgeInsets.only(
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left: 12,
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right: 12,
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bottom: MediaQuery.of(context).viewInsets.bottom + 8,
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top: 8),
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child: Row(
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children: [
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Expanded(
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child: TextField(
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controller: _controller,
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textCapitalization: TextCapitalization.sentences,
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decoration: InputDecoration(
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hintText: "Votre question...",
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filled: true,
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fillColor: Colors.grey[100],
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border: OutlineInputBorder(
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borderRadius: BorderRadius.circular(24),
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borderSide: BorderSide.none,
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),
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contentPadding:
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const EdgeInsets.symmetric(horizontal: 16, vertical: 10),
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),
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onSubmitted: (_) => _send(),
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),
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),
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const SizedBox(width: 8),
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if (_speechAvailable)
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AnimatedContainer(
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duration: const Duration(milliseconds: 200),
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decoration: BoxDecoration(
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color: _isListening ? Colors.red : Colors.grey[200],
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shape: BoxShape.circle,
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),
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child: IconButton(
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icon: Icon(
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_isListening ? Icons.mic : Icons.mic_none,
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color: _isListening ? Colors.white : Colors.grey[600],
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size: 20,
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),
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onPressed: _toggleListening,
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),
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),
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const SizedBox(width: 8),
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CircleAvatar(
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backgroundColor: kMainColor1,
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child: IconButton(
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icon: const Icon(Icons.send, color: Colors.white, size: 18),
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onPressed: _send,
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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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),
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);
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}
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}
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class _ChatBubble extends StatelessWidget {
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final String text;
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final bool isUser;
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const _ChatBubble({required this.text, required this.isUser});
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@override
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Widget build(BuildContext context) {
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return Align(
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alignment: isUser ? Alignment.centerRight : Alignment.centerLeft,
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child: Container(
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margin: const EdgeInsets.symmetric(vertical: 4),
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padding: const EdgeInsets.symmetric(horizontal: 14, vertical: 10),
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constraints: BoxConstraints(maxWidth: MediaQuery.of(context).size.width * 0.78),
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decoration: BoxDecoration(
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color: isUser ? kMainColor1 : Colors.grey[100],
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borderRadius: BorderRadius.only(
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topLeft: const Radius.circular(16),
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topRight: const Radius.circular(16),
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bottomLeft: isUser ? const Radius.circular(16) : const Radius.circular(4),
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bottomRight: isUser ? const Radius.circular(4) : const Radius.circular(16),
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),
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),
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child: isUser
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? Text(
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text,
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style: const TextStyle(color: Colors.white, fontSize: 14),
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)
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: HtmlWidget(
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text,
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textStyle: TextStyle(color: kSecondGrey, fontSize: 14),
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),
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),
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);
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}
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}
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class _AssistantMessage extends StatelessWidget {
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final AssistantResponse response;
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final void Function(String sectionId, String sectionTitle)? onNavigate;
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const _AssistantMessage({required this.response, this.onNavigate});
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@override
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Widget build(BuildContext context) {
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return Padding(
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padding: const EdgeInsets.symmetric(vertical: 4),
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child: Column(
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crossAxisAlignment: CrossAxisAlignment.start,
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children: [
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if (response.reply.isNotEmpty)
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_ChatBubble(text: response.reply, isUser: false),
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if (response.cards != null && response.cards!.isNotEmpty)
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Padding(
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padding: const EdgeInsets.only(top: 6, left: 4, right: 24),
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child: Column(
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children: response.cards!.map((card) => _AiCardWidget(card: card)).toList(),
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),
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),
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if (response.navigation != null && onNavigate != null)
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GestureDetector(
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onTap: () {
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Navigator.of(context).pop();
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onNavigate!(
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response.navigation!.sectionId,
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_stripHtml(response.navigation!.sectionTitle),
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);
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},
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child: Container(
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margin: const EdgeInsets.only(top: 8, left: 4, right: 24),
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padding: const EdgeInsets.symmetric(horizontal: 12, vertical: 10),
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decoration: BoxDecoration(
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color: kMainColor1.withValues(alpha: 0.08),
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borderRadius: BorderRadius.circular(12),
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border: Border.all(color: kMainColor1.withValues(alpha: 0.35)),
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),
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child: Row(
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children: [
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ClipRRect(
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borderRadius: BorderRadius.circular(8),
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child: response.navigation!.imageUrl != null
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? Image.network(
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response.navigation!.imageUrl!,
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width: 48,
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height: 48,
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fit: BoxFit.cover,
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errorBuilder: (_, __, ___) => Container(
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width: 48,
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height: 48,
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decoration: BoxDecoration(
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color: kMainColor1,
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borderRadius: BorderRadius.circular(8),
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),
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child: const Icon(Icons.place_outlined, color: Colors.white, size: 22),
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),
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)
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: Container(
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width: 48,
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height: 48,
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decoration: BoxDecoration(
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color: kMainColor1,
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borderRadius: BorderRadius.circular(8),
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),
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child: const Icon(Icons.place_outlined, color: Colors.white, size: 22),
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),
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),
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const SizedBox(width: 10),
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Expanded(
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child: Column(
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crossAxisAlignment: CrossAxisAlignment.start,
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children: [
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Text(
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_stripHtml(response.navigation!.sectionTitle),
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style: TextStyle(
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fontWeight: FontWeight.w600,
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fontSize: 13,
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color: kSecondGrey,
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),
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),
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Text(
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"Voir cette section",
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style: TextStyle(fontSize: 11, color: Colors.grey[500]),
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),
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],
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),
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),
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Icon(Icons.chevron_right, color: kMainColor1, size: 20),
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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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}
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class _AiCardWidget extends StatelessWidget {
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final AiCard card;
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const _AiCardWidget({required this.card});
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@override
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Widget build(BuildContext context) {
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return Container(
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margin: const EdgeInsets.only(bottom: 6),
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padding: const EdgeInsets.symmetric(horizontal: 12, vertical: 8),
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decoration: BoxDecoration(
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color: Colors.white,
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borderRadius: BorderRadius.circular(10),
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border: Border.all(color: Colors.grey[200]!),
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boxShadow: [
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BoxShadow(
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color: Colors.black.withValues(alpha: 0.05),
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blurRadius: 3,
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offset: const Offset(0, 1)),
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],
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),
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child: Row(
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children: [
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if (card.icon != null) ...[
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Text(card.icon!, style: const TextStyle(fontSize: 18)),
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const SizedBox(width: 8),
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],
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Expanded(
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child: Column(
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crossAxisAlignment: CrossAxisAlignment.start,
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children: [
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Text(card.title,
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style: TextStyle(
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fontWeight: FontWeight.w600, fontSize: 13, color: kSecondGrey)),
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if (card.subtitle.isNotEmpty)
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Text(card.subtitle,
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style: const TextStyle(fontSize: 12, color: Colors.grey)),
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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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} |