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sjk
2025-11-17 13:39:05 +08:00
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import 'package:flutter/material.dart';
import 'package:flutter_riverpod/flutter_riverpod.dart';
import '../models/ai_tutor.dart';
import '../data/ai_tutor_data.dart';
import '../screens/ai_conversation_screen.dart';
import '../models/conversation_scenario.dart';
import '../data/scenario_data.dart';
import '../providers/speaking_provider.dart';
import '../screens/scenario_practice_screen.dart';
import '../models/pronunciation_item.dart';
import '../screens/pronunciation_list_screen.dart';
import '../models/pronunciation_assessment.dart';
/// 口语练习主页面
class SpeakingHomeScreen extends ConsumerStatefulWidget {
const SpeakingHomeScreen({super.key});
@override
ConsumerState<SpeakingHomeScreen> createState() => _SpeakingHomeScreenState();
}
class _SpeakingHomeScreenState extends ConsumerState<SpeakingHomeScreen> {
@override
void initState() {
super.initState();
// 加载推荐场景
WidgetsBinding.instance.addPostFrameCallback((_) {
ref.read(speakingTasksProvider.notifier).loadRecommendedTasks();
});
}
@override
Widget build(BuildContext context) {
return Scaffold(
backgroundColor: const Color(0xFFF5F5F5),
appBar: AppBar(
backgroundColor: Colors.transparent,
elevation: 0,
leading: IconButton(
icon: const Icon(Icons.arrow_back, color: Colors.black87),
onPressed: () => Navigator.of(context).pop(),
),
title: const Text(
'口语练习',
style: TextStyle(
color: Colors.black87,
fontSize: 18,
fontWeight: FontWeight.w600,
),
),
centerTitle: true,
),
body: SingleChildScrollView(
child: Padding(
padding: const EdgeInsets.all(16),
child: Column(
crossAxisAlignment: CrossAxisAlignment.start,
children: [
_buildAITutors(),
const SizedBox(height: 20),
_buildScenarios(),
const SizedBox(height: 20),
_buildPronunciationPractice(),
const SizedBox(height: 20),
_buildSpeakingProgress(),
const SizedBox(height: 100), // 底部导航栏空间
],
),
),
),
);
}
Widget _buildAITutors() {
return Container(
padding: const EdgeInsets.all(20),
decoration: BoxDecoration(
color: Colors.white,
borderRadius: BorderRadius.circular(16),
boxShadow: [
BoxShadow(
color: Colors.black.withOpacity(0.05),
blurRadius: 10,
offset: const Offset(0, 2),
),
],
),
child: Column(
crossAxisAlignment: CrossAxisAlignment.start,
children: [
const Text(
'AI对话伙伴',
style: TextStyle(
fontSize: 18,
fontWeight: FontWeight.bold,
),
),
const SizedBox(height: 16),
GridView.builder(
shrinkWrap: true,
physics: const NeverScrollableScrollPhysics(),
gridDelegate: const SliverGridDelegateWithFixedCrossAxisCount(
crossAxisCount: 2,
crossAxisSpacing: 12,
mainAxisSpacing: 12,
childAspectRatio: 1.2,
),
itemCount: AITutorData.getAllTutors().length,
itemBuilder: (context, index) {
final tutor = AITutorData.getAllTutors()[index];
return _buildTutorCard(tutor);
},
),
],
),
);
}
Widget _buildTutorCard(AITutor tutor) {
return GestureDetector(
onTap: () {
Navigator.of(context).push(
MaterialPageRoute(
builder: (context) => AIConversationScreen(tutor: tutor),
),
);
},
child: Container(
padding: const EdgeInsets.all(12),
decoration: BoxDecoration(
color: tutor.type.color.withOpacity(0.1),
borderRadius: BorderRadius.circular(12),
border: Border.all(color: tutor.type.color.withOpacity(0.3)),
),
child: Column(
mainAxisAlignment: MainAxisAlignment.center,
children: [
Text(
tutor.avatar,
style: const TextStyle(fontSize: 32),
),
const SizedBox(height: 8),
Text(
tutor.type.displayName,
style: TextStyle(
fontSize: 14,
fontWeight: FontWeight.bold,
color: tutor.type.color,
),
),
const SizedBox(height: 4),
Text(
tutor.type.description,
style: const TextStyle(
fontSize: 10,
color: Colors.grey,
),
textAlign: TextAlign.center,
),
],
),
),
);
}
Widget _buildScenarios() {
final tasksState = ref.watch(speakingTasksProvider);
return Container(
padding: const EdgeInsets.all(20),
decoration: BoxDecoration(
color: Colors.white,
borderRadius: BorderRadius.circular(16),
boxShadow: [
BoxShadow(
color: Colors.black.withOpacity(0.05),
blurRadius: 10,
offset: const Offset(0, 2),
),
],
),
child: Column(
crossAxisAlignment: CrossAxisAlignment.start,
children: [
const Text(
'对话场景',
style: TextStyle(
fontSize: 18,
fontWeight: FontWeight.bold,
),
),
const SizedBox(height: 16),
tasksState.isLoading
? const Center(
child: Padding(
padding: EdgeInsets.all(20.0),
child: CircularProgressIndicator(),
),
)
: tasksState.error != null
? Center(
child: Column(
children: [
Text(
'加载失败: ${tasksState.error}',
style: const TextStyle(color: Colors.red),
),
const SizedBox(height: 8),
TextButton(
onPressed: () {
ref.read(speakingTasksProvider.notifier).loadRecommendedTasks();
},
child: const Text('重试'),
),
],
),
)
: tasksState.tasks.isEmpty
? Center(
child: Column(
children: [
Icon(
Icons.chat_bubble_outline,
size: 48,
color: Colors.grey[400],
),
const SizedBox(height: 12),
Text(
'暂无可用场景',
style: TextStyle(
fontSize: 14,
color: Colors.grey[600],
),
),
const SizedBox(height: 8),
Text(
'使用静态数据作为备选',
style: TextStyle(
fontSize: 12,
color: Colors.grey[500],
),
),
],
),
)
: Column(
children: tasksState.tasks.take(5).map((task) {
// 将SpeakingTask转换为ConversationScenario显示
final scenario = ConversationScenario(
id: task.id,
title: task.title,
subtitle: task.description,
description: task.description,
duration: '${task.estimatedDuration}分钟',
level: _mapDifficultyToLevel(task.difficulty.name),
type: ScenarioType.business,
objectives: task.objectives,
keyPhrases: task.keyPhrases,
steps: [],
createdAt: task.createdAt,
);
return Padding(
padding: const EdgeInsets.only(bottom: 12),
child: _buildScenarioItem(scenario),
);
}).toList(),
),
],
),
);
}
Widget _buildScenarioItem(ConversationScenario scenario) {
return GestureDetector(
onTap: () {
Navigator.of(context).push(
MaterialPageRoute(
builder: (context) => ScenarioPracticeScreen(scenario: scenario),
),
);
},
child: Container(
padding: const EdgeInsets.all(12),
decoration: BoxDecoration(
color: Colors.grey[50],
borderRadius: BorderRadius.circular(8),
),
child: Row(
children: [
Container(
width: 40,
height: 40,
decoration: BoxDecoration(
color: const Color(0xFF2196F3).withOpacity(0.1),
borderRadius: BorderRadius.circular(20),
),
child: Center(
child: Text(
scenario.type.icon,
style: const TextStyle(fontSize: 20),
),
),
),
const SizedBox(width: 12),
Expanded(
child: Column(
crossAxisAlignment: CrossAxisAlignment.start,
children: [
Text(
scenario.title,
style: const TextStyle(
fontSize: 14,
fontWeight: FontWeight.bold,
),
),
Text(
scenario.subtitle,
style: const TextStyle(
fontSize: 12,
color: Colors.grey,
),
),
],
),
),
Column(
children: [
Text(
scenario.duration,
style: const TextStyle(
fontSize: 12,
color: Colors.grey,
),
),
Container(
padding: const EdgeInsets.symmetric(horizontal: 6, vertical: 2),
decoration: BoxDecoration(
color: const Color(0xFF2196F3),
borderRadius: BorderRadius.circular(4),
),
child: Text(
scenario.level,
style: const TextStyle(
fontSize: 10,
color: Colors.white,
),
),
),
],
),
],
),
),
);
}
Widget _buildPronunciationPractice() {
return Container(
padding: const EdgeInsets.all(20),
decoration: BoxDecoration(
color: Colors.white,
borderRadius: BorderRadius.circular(16),
boxShadow: [
BoxShadow(
color: Colors.black.withOpacity(0.05),
blurRadius: 10,
offset: const Offset(0, 2),
),
],
),
child: Column(
crossAxisAlignment: CrossAxisAlignment.start,
children: [
const Text(
'发音练习',
style: TextStyle(
fontSize: 18,
fontWeight: FontWeight.bold,
),
),
const SizedBox(height: 16),
Row(
children: [
Expanded(
child: _buildPronunciationCard(
'单词发音',
'音素练习',
Icons.hearing,
Colors.blue,
),
),
const SizedBox(width: 12),
Expanded(
child: _buildPronunciationCard(
'句子朗读',
'语调练习',
Icons.graphic_eq,
Colors.green,
),
),
],
),
],
),
);
}
Widget _buildPronunciationCard(
String title,
String subtitle,
IconData icon,
Color color,
) {
return GestureDetector(
onTap: () {
PronunciationType type;
if (title == '单词发音') {
type = PronunciationType.word;
} else {
type = PronunciationType.sentence;
}
Navigator.push(
context,
MaterialPageRoute(
builder: (context) => PronunciationListScreen(type: type),
),
);
},
child: Container(
padding: const EdgeInsets.all(16),
decoration: BoxDecoration(
color: color.withOpacity(0.1),
borderRadius: BorderRadius.circular(12),
border: Border.all(color: color.withOpacity(0.3)),
),
child: Column(
children: [
Icon(
icon,
color: color,
size: 32,
),
const SizedBox(height: 8),
Text(
title,
style: TextStyle(
fontSize: 14,
fontWeight: FontWeight.bold,
color: color,
),
),
const SizedBox(height: 4),
Text(
subtitle,
style: const TextStyle(
fontSize: 12,
color: Colors.grey,
),
textAlign: TextAlign.center,
),
],
),
),
);
}
Widget _buildSpeakingProgress() {
return Container(
padding: const EdgeInsets.all(20),
decoration: BoxDecoration(
color: Colors.white,
borderRadius: BorderRadius.circular(16),
boxShadow: [
BoxShadow(
color: Colors.black.withOpacity(0.05),
blurRadius: 10,
offset: const Offset(0, 2),
),
],
),
child: Column(
crossAxisAlignment: CrossAxisAlignment.start,
children: [
const Text(
'口语统计',
style: TextStyle(
fontSize: 18,
fontWeight: FontWeight.bold,
),
),
const SizedBox(height: 16),
Consumer(
builder: (context, ref, _) {
final service = ref.watch(speakingServiceProvider);
return FutureBuilder(
future: service.getUserSpeakingStatistics(),
builder: (context, snapshot) {
if (!snapshot.hasData) {
return const Center(child: CircularProgressIndicator());
}
final stats = snapshot.data!.data;
return Row(
mainAxisAlignment: MainAxisAlignment.spaceAround,
children: [
_buildProgressItem('${stats?.totalSessions ?? 0}', '对话次数', Icons.chat_bubble),
_buildProgressItem('${stats != null ? stats.skillAnalysis.criteriaScores[PronunciationCriteria.accuracy]?.toStringAsFixed(0) ?? '0' : '0'}%', '发音准确度', Icons.mic),
_buildProgressItem('${stats?.averageScore.toStringAsFixed(0) ?? '0'}', '平均分', Icons.trending_up),
],
);
},
);
},
),
],
),
);
}
Widget _buildProgressItem(String value, String label, IconData icon) {
return Column(
children: [
Icon(
icon,
color: const Color(0xFF2196F3),
size: 24,
),
const SizedBox(height: 8),
Text(
value,
style: const TextStyle(
fontSize: 20,
fontWeight: FontWeight.bold,
color: Color(0xFF2196F3),
),
),
const SizedBox(height: 4),
Text(
label,
style: const TextStyle(
fontSize: 12,
color: Colors.grey,
),
),
],
);
}
String _mapDifficultyToLevel(String? difficulty) {
if (difficulty == null) return 'B1';
switch (difficulty.toLowerCase()) {
case 'beginner':
case 'elementary':
return 'A1';
case 'intermediate':
return 'B1';
case 'upper-intermediate':
case 'upperintermediate':
return 'B2';
case 'advanced':
return 'C1';
default:
return 'B1';
}
}
}