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sjk
351
client/lib/features/ai/pages/ai_writing_page.dart
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351
client/lib/features/ai/pages/ai_writing_page.dart
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import 'package:flutter/material.dart';
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import '../../../core/network/ai_api_service.dart';
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/// AI写作批改页面
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class AIWritingPage extends StatefulWidget {
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const AIWritingPage({Key? key}) : super(key: key);
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@override
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State<AIWritingPage> createState() => _AIWritingPageState();
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}
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class _AIWritingPageState extends State<AIWritingPage> {
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final TextEditingController _contentController = TextEditingController();
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final AIApiService _aiApiService = AIApiService();
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String _selectedType = 'essay';
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bool _isLoading = false;
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Map<String, dynamic>? _correctionResult;
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String? _error;
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final List<Map<String, String>> _writingTypes = [
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{'value': 'essay', 'label': '议论文'},
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{'value': 'email', 'label': '邮件'},
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{'value': 'report', 'label': '报告'},
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{'value': 'letter', 'label': '信件'},
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{'value': 'story', 'label': '故事'},
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];
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@override
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void dispose() {
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_contentController.dispose();
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super.dispose();
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}
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Future<void> _submitForCorrection() async {
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if (_contentController.text.trim().isEmpty) {
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ScaffoldMessenger.of(context).showSnackBar(
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const SnackBar(content: Text('请输入要批改的内容')),
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);
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return;
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}
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setState(() {
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_isLoading = true;
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_error = null;
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_correctionResult = null;
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});
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try {
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final result = await _aiApiService.correctWriting(
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content: _contentController.text.trim(),
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taskType: _selectedType,
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);
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setState(() {
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_correctionResult = result;
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_isLoading = false;
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});
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} catch (e) {
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setState(() {
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_error = e.toString();
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_isLoading = false;
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});
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}
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}
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void _clearContent() {
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setState(() {
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_contentController.clear();
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_correctionResult = null;
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_error = null;
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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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appBar: AppBar(
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title: const Text('AI写作批改'),
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backgroundColor: Theme.of(context).primaryColor,
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foregroundColor: Colors.white,
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actions: [
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IconButton(
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icon: const Icon(Icons.clear),
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onPressed: _clearContent,
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tooltip: '清空内容',
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),
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],
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),
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body: SingleChildScrollView(
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padding: const EdgeInsets.all(16.0),
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child: Column(
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crossAxisAlignment: CrossAxisAlignment.start,
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children: [
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// 写作类型选择
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Card(
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child: Padding(
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padding: const EdgeInsets.all(16.0),
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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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'写作类型',
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style: TextStyle(
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fontSize: 16,
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fontWeight: FontWeight.bold,
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),
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),
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const SizedBox(height: 12),
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Wrap(
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spacing: 8,
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children: _writingTypes.map((type) {
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final isSelected = _selectedType == type['value'];
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return ChoiceChip(
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label: Text(type['label']!),
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selected: isSelected,
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onSelected: (selected) {
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if (selected) {
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setState(() {
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_selectedType = type['value']!;
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});
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}
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},
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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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const SizedBox(height: 16),
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// 内容输入区域
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Card(
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child: Padding(
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padding: const EdgeInsets.all(16.0),
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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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'写作内容',
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style: TextStyle(
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fontSize: 16,
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fontWeight: FontWeight.bold,
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),
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),
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const SizedBox(height: 12),
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TextField(
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controller: _contentController,
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maxLines: 10,
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decoration: const InputDecoration(
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hintText: '请输入您的英文写作内容...',
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border: OutlineInputBorder(),
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contentPadding: EdgeInsets.all(12),
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),
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),
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const SizedBox(height: 16),
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SizedBox(
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width: double.infinity,
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child: ElevatedButton(
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onPressed: _isLoading ? null : _submitForCorrection,
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style: ElevatedButton.styleFrom(
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backgroundColor: Theme.of(context).primaryColor,
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foregroundColor: Colors.white,
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padding: const EdgeInsets.symmetric(vertical: 16),
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),
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child: _isLoading
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? const Row(
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mainAxisAlignment: MainAxisAlignment.center,
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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(
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strokeWidth: 2,
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valueColor: AlwaysStoppedAnimation<Color>(Colors.white),
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),
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),
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SizedBox(width: 8),
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Text('AI批改中...'),
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],
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)
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: const Text(
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'开始AI批改',
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style: TextStyle(fontSize: 16),
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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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const SizedBox(height: 16),
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// 错误显示
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if (_error != null)
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Card(
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color: Colors.red.shade50,
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child: Padding(
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padding: const EdgeInsets.all(16.0),
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child: Row(
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children: [
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Icon(Icons.error, color: Colors.red.shade700),
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const SizedBox(width: 8),
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Expanded(
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child: Text(
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_error!,
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style: TextStyle(color: Colors.red.shade700),
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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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// 批改结果显示
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if (_correctionResult != null)
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Card(
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child: Padding(
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padding: const EdgeInsets.all(16.0),
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child: Column(
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crossAxisAlignment: CrossAxisAlignment.start,
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children: [
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Row(
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children: [
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Icon(
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Icons.check_circle,
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color: Colors.green.shade600,
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),
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const SizedBox(width: 8),
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const Text(
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'AI批改结果',
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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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],
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),
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const SizedBox(height: 16),
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// 总体评分
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if (_correctionResult!['score'] != null)
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Container(
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padding: const EdgeInsets.all(12),
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decoration: BoxDecoration(
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color: Colors.blue.shade50,
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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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const Icon(Icons.star, color: Colors.amber),
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const SizedBox(width: 8),
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Text(
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'总体评分: ${_correctionResult!['score']}/100',
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style: const TextStyle(
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fontSize: 16,
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fontWeight: FontWeight.bold,
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),
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),
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],
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),
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),
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const SizedBox(height: 12),
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// 批改建议
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if (_correctionResult!['suggestions'] != null)
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Column(
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crossAxisAlignment: CrossAxisAlignment.start,
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children: [
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const Text(
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'批改建议:',
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style: TextStyle(
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fontSize: 16,
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fontWeight: FontWeight.bold,
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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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_correctionResult!['suggestions'].toString(),
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style: const TextStyle(fontSize: 14),
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),
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],
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),
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// 错误列表
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if (_correctionResult!['errors'] != null)
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Column(
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crossAxisAlignment: CrossAxisAlignment.start,
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children: [
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const SizedBox(height: 16),
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const Text(
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'发现的错误:',
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style: TextStyle(
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fontSize: 16,
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fontWeight: FontWeight.bold,
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),
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),
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const SizedBox(height: 8),
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...(_correctionResult!['errors'] as List).map(
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(error) => Container(
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margin: const EdgeInsets.only(bottom: 8),
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padding: const EdgeInsets.all(12),
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decoration: BoxDecoration(
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color: Colors.orange.shade50,
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borderRadius: BorderRadius.circular(8),
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border: Border.all(
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color: Colors.orange.shade200,
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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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Text(
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'错误类型: ${error['type'] ?? '未知'}',
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style: TextStyle(
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fontWeight: FontWeight.bold,
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color: Colors.orange.shade700,
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),
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),
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if (error['original'] != null)
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Text('原文: ${error['original']}'),
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if (error['corrected'] != null)
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Text(
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'建议: ${error['corrected']}',
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style: TextStyle(
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color: Colors.green.shade700,
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fontWeight: FontWeight.bold,
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),
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),
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if (error['explanation'] != null)
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Text(
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'说明: ${error['explanation']}',
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style: const TextStyle(fontSize: 12),
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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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),
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),
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);
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}
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}
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