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