543 lines
17 KiB
Dart
543 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/vocabulary_book_model.dart';
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import '../models/review_models.dart';
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import '../models/word_model.dart';
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import '../providers/vocabulary_provider.dart';
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import 'dart:math';
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class SmartReviewScreen extends ConsumerStatefulWidget {
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final VocabularyBook? vocabularyBook;
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final ReviewMode reviewMode;
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final int dailyTarget;
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const SmartReviewScreen({
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super.key,
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this.vocabularyBook,
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this.reviewMode = ReviewMode.adaptive,
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this.dailyTarget = 20,
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});
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@override
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ConsumerState<SmartReviewScreen> createState() => _SmartReviewScreenState();
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}
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class _SmartReviewScreenState extends ConsumerState<SmartReviewScreen> {
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List<Word> _reviewWords = [];
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int _currentIndex = 0;
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bool _isLoading = true;
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bool _showAnswer = false;
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Map<int, int> _reviewResults = {}; // 0: 不记得, 1: 模糊, 2: 记得
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@override
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void initState() {
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super.initState();
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_loadWords();
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}
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Future<void> _loadWords() async {
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setState(() => _isLoading = true);
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try {
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final notifier = ref.read(vocabularyProvider.notifier);
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await notifier.loadReviewWords();
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final state = ref.read(vocabularyProvider);
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final words = state.reviewWords;
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if (words.isEmpty) {
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// 如果没有复习词汇，生成示例数据
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_reviewWords = _generateSampleWords();
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} else {
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_reviewWords = words.take(widget.dailyTarget).toList();
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}
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} catch (e) {
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_reviewWords = _generateSampleWords();
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}
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setState(() => _isLoading = false);
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}
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List<Word> _generateSampleWords() {
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final sampleData = [
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{'word': 'abandon', 'phonetic': '/əˈbændən/', 'translation': '放弃；遗弃'},
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{'word': 'ability', 'phonetic': '/əˈbɪləti/', 'translation': '能力；才能'},
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{'word': 'abroad', 'phonetic': '/əˈbrɔːd/', 'translation': '在国外；到国外'},
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{'word': 'absence', 'phonetic': '/ˈæbsəns/', 'translation': '缺席；缺乏'},
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{'word': 'absolute', 'phonetic': '/ˈæbsəluːt/', 'translation': '绝对的；完全的'},
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{'word': 'absorb', 'phonetic': '/əbˈsɔːrb/', 'translation': '吸收；吸引'},
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{'word': 'abstract', 'phonetic': '/ˈæbstrækt/', 'translation': '抽象的；抽象概念'},
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{'word': 'abundant', 'phonetic': '/əˈbʌndənt/', 'translation': '丰富的；充裕的'},
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{'word': 'academic', 'phonetic': '/ˌækəˈdemɪk/', 'translation': '学术的；学院的'},
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{'word': 'accept', 'phonetic': '/əkˈsept/', 'translation': '接受；承认'},
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];
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return List.generate(
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widget.dailyTarget.clamp(1, sampleData.length),
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(index) {
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final data = sampleData[index % sampleData.length];
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return Word(
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id: '${index + 1}',
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word: data['word']!,
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phonetic: data['phonetic'],
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difficulty: WordDifficulty.intermediate,
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frequency: 1000,
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definitions: [
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WordDefinition(
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type: WordType.noun,
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definition: 'Example definition',
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translation: data['translation']!,
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),
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],
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createdAt: DateTime.now(),
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updatedAt: DateTime.now(),
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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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if (_isLoading) {
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return Scaffold(
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appBar: AppBar(
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title: const Text('智能复习'),
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),
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body: const Center(
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child: CircularProgressIndicator(),
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),
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);
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}
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if (_currentIndex >= _reviewWords.length) {
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return _buildCompleteScreen();
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}
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return Scaffold(
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appBar: AppBar(
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title: Text('智能复习 (${_currentIndex + 1}/${_reviewWords.length})'),
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actions: [
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TextButton(
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onPressed: _showExitConfirmDialog,
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child: const Text(
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'退出',
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style: TextStyle(color: Colors.white),
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),
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),
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],
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),
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body: _buildReviewCard(),
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);
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}
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Widget _buildReviewCard() {
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final word = _reviewWords[_currentIndex];
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final translation = word.definitions.isNotEmpty
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? word.definitions.first.translation
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: '示例释义';
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return Column(
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children: [
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// 进度条
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LinearProgressIndicator(
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value: (_currentIndex + 1) / _reviewWords.length,
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backgroundColor: Colors.grey[200],
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valueColor: const AlwaysStoppedAnimation<Color>(Color(0xFF9C27B0)),
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),
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Expanded(
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child: Center(
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child: SingleChildScrollView(
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padding: const EdgeInsets.all(24),
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child: Column(
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mainAxisAlignment: MainAxisAlignment.center,
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children: [
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// 卡片
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Container(
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width: double.infinity,
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padding: const EdgeInsets.all(32),
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decoration: BoxDecoration(
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color: Colors.white,
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borderRadius: BorderRadius.circular(20),
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boxShadow: [
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BoxShadow(
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color: Colors.black.withOpacity(0.1),
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blurRadius: 20,
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offset: const Offset(0, 4),
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),
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],
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),
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child: Column(
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children: [
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// 单词
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Text(
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word.word,
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style: const TextStyle(
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fontSize: 42,
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fontWeight: FontWeight.bold,
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color: Color(0xFF9C27B0),
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),
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),
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if (word.phonetic != null) ...[
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const SizedBox(height: 12),
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Text(
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word.phonetic!,
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style: const TextStyle(
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fontSize: 20,
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color: Colors.grey,
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fontStyle: FontStyle.italic,
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),
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),
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],
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const SizedBox(height: 32),
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// 音频按钮
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IconButton(
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onPressed: () => _playAudio(word.word),
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icon: const Icon(
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Icons.volume_up,
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size: 48,
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color: Color(0xFF9C27B0),
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),
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),
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const SizedBox(height: 32),
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// 答案区域
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AnimatedContainer(
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duration: const Duration(milliseconds: 300),
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curve: Curves.easeInOut,
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height: _showAnswer ? null : 0,
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child: _showAnswer
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? Column(
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children: [
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const Divider(),
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const SizedBox(height: 16),
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const Text(
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'释义',
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style: TextStyle(
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fontSize: 14,
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color: Colors.grey,
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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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translation,
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style: const TextStyle(
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fontSize: 24,
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fontWeight: FontWeight.w600,
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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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: const SizedBox.shrink(),
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),
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],
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),
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),
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const SizedBox(height: 32),
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// 提示文本
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if (!_showAnswer)
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const Text(
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'回忆这个单词的意思，然后点击“显示答案”',
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style: TextStyle(
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fontSize: 14,
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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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// 底部按钮
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Container(
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padding: const EdgeInsets.all(16),
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decoration: BoxDecoration(
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color: Colors.white,
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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: SafeArea(
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child: _showAnswer
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? Row(
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children: [
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Expanded(
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child: _buildResultButton(
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label: '不记得',
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color: Colors.red,
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result: 0,
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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: _buildResultButton(
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label: '模糊',
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color: Colors.orange,
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result: 1,
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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: _buildResultButton(
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label: '记得',
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color: Colors.green,
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result: 2,
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),
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),
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],
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)
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: ElevatedButton(
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onPressed: () {
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setState(() {
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_showAnswer = true;
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});
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},
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style: ElevatedButton.styleFrom(
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backgroundColor: const Color(0xFF9C27B0),
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padding: const EdgeInsets.symmetric(vertical: 16),
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shape: RoundedRectangleBorder(
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borderRadius: BorderRadius.circular(12),
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),
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),
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child: const Text(
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'显示答案',
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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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),
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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 _buildResultButton({
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required String label,
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required Color color,
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required int result,
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}) {
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return ElevatedButton(
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onPressed: () => _recordResult(result),
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style: ElevatedButton.styleFrom(
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backgroundColor: color,
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padding: const EdgeInsets.symmetric(vertical: 12),
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shape: RoundedRectangleBorder(
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borderRadius: BorderRadius.circular(12),
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),
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),
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child: Text(
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label,
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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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);
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}
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void _recordResult(int result) {
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setState(() {
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_reviewResults[_currentIndex] = result;
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_showAnswer = false;
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_currentIndex++;
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});
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}
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Widget _buildCompleteScreen() {
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final remembered = _reviewResults.values.where((r) => r == 2).length;
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final fuzzy = _reviewResults.values.where((r) => r == 1).length;
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final forgotten = _reviewResults.values.where((r) => r == 0).length;
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return Scaffold(
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appBar: AppBar(
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title: const Text('复习完成'),
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automaticallyImplyLeading: false,
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),
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body: Center(
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child: Padding(
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padding: const EdgeInsets.all(24),
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child: Column(
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mainAxisAlignment: MainAxisAlignment.center,
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children: [
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Container(
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width: 120,
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height: 120,
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decoration: BoxDecoration(
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color: const Color(0xFF9C27B0).withOpacity(0.1),
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shape: BoxShape.circle,
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),
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child: const Center(
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child: Icon(
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Icons.check_circle,
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size: 64,
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color: Color(0xFF9C27B0),
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),
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),
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),
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const SizedBox(height: 24),
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const Text(
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'复习完成！',
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style: TextStyle(
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fontSize: 28,
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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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Text(
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'共复习 ${_reviewWords.length} 个单词',
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style: const TextStyle(
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fontSize: 18,
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color: Colors.grey,
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),
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),
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const SizedBox(height: 32),
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// 统计信息
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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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children: [
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_buildStatRow(
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'完全记得',
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remembered,
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Colors.green,
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),
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const SizedBox(height: 12),
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_buildStatRow(
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'模糊记得',
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fuzzy,
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Colors.orange,
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),
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const SizedBox(height: 12),
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_buildStatRow(
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'不记得',
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forgotten,
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Colors.red,
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),
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],
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),
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),
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const SizedBox(height: 48),
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ElevatedButton(
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onPressed: () => Navigator.of(context).pop(),
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style: ElevatedButton.styleFrom(
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backgroundColor: const Color(0xFF9C27B0),
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padding: const EdgeInsets.symmetric(
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horizontal: 48,
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vertical: 16,
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),
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shape: RoundedRectangleBorder(
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borderRadius: BorderRadius.circular(12),
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),
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),
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child: const Text(
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'完成',
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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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),
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const SizedBox(height: 16),
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TextButton(
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onPressed: () {
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setState(() {
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_currentIndex = 0;
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_reviewResults.clear();
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_showAnswer = false;
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});
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_loadWords();
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},
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child: const Text('重新复习'),
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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 _buildStatRow(String label, int count, Color color) {
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return Row(
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mainAxisAlignment: MainAxisAlignment.spaceBetween,
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children: [
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Row(
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children: [
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Container(
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width: 12,
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height: 12,
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decoration: BoxDecoration(
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color: color,
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shape: BoxShape.circle,
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),
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),
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const SizedBox(width: 12),
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Text(
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label,
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style: const TextStyle(
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fontSize: 16,
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),
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),
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],
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),
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Text(
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'$count',
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style: TextStyle(
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fontSize: 18,
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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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],
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);
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}
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void _playAudio(String word) {
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ScaffoldMessenger.of(context).showSnackBar(
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SnackBar(
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content: Text('正在播放 "$word" 的发音'),
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duration: const Duration(seconds: 1),
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),
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);
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}
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void _showExitConfirmDialog() {
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showDialog(
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context: context,
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builder: (context) => AlertDialog(
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title: const Text('退出复习'),
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content: const Text('确定要退出吗？当前进度将不会保存。'),
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actions: [
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TextButton(
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onPressed: () => Navigator.of(context).pop(),
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child: const Text('取消'),
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),
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TextButton(
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onPressed: () {
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Navigator.of(context).pop();
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Navigator.of(context).pop();
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},
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child: const Text('确定'),
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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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