810 lines
27 KiB
Dart
810 lines
27 KiB
Dart
import 'package:flutter/material.dart';
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import '../../core/app_state.dart';
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import '../../core/app_theme.dart';
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import '../../core/ai_service.dart';
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import '../../core/generated_content.dart';
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import '../../core/models.dart';
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import '../../core/review_feedback.dart';
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import '../../core/a0_core.dart';
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import '../../core/voice_service.dart';
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import '../../widgets/app_widgets.dart';
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class ReviewPage extends StatefulWidget {
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const ReviewPage({
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super.key,
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required this.state,
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required this.onFinished,
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required this.onOpenAdaptiveLesson,
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});
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final AppState state;
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final VoidCallback onFinished;
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final VoidCallback onOpenAdaptiveLesson;
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@override
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State<ReviewPage> createState() => _ReviewPageState();
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}
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class _ReviewPageState extends State<ReviewPage> {
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final controller = TextEditingController();
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bool showHint = false;
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bool usedHelp = false;
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String? validationMessage;
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bool generatingVariant = false;
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bool generatingLesson = false;
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@override
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void dispose() {
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controller.dispose();
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super.dispose();
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}
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void _next(ReviewItem item, {required bool assisted}) {
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final result = ReviewFeedback.check(item, controller.text);
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if (!result.complete) {
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setState(() => validationMessage = result.message);
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return;
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}
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widget.state.completeReview(
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item,
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assisted: assisted,
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rawAnswer: controller.text.trim(),
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);
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controller.clear();
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setState(() {
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showHint = false;
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usedHelp = false;
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validationMessage = null;
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});
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}
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Future<void> _generateVariant(ReviewItem item) async {
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setState(() => generatingVariant = true);
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final variant = await AiService.instance.generateReviewVariant(
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provider: widget.state.aiProvider,
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endpoint: widget.state.aiEndpoint,
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model: widget.state.aiModel,
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targetItemId: item.id,
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basePrompt: item.prompt,
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);
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if (!mounted) return;
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setState(() => generatingVariant = false);
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if (variant == null) {
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ScaffoldMessenger.of(
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context,
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).showSnackBar(const SnackBar(content: Text('未获得合格变式，已继续使用本地审核题。')));
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return;
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}
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widget.state.applyGeneratedReviewVariant(variant);
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ScaffoldMessenger.of(
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context,
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).showSnackBar(const SnackBar(content: Text('已生成并审核新题面，核心学习目标不变。')));
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}
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Future<void> _generateAdaptiveLesson(ReviewItem item) async {
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final label = a0CoreItems[item.id];
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if (label == null) return;
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setState(() => generatingLesson = true);
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final lesson = await AiService.instance.generateAdaptiveLesson(
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provider: widget.state.aiProvider,
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endpoint: widget.state.aiEndpoint,
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model: widget.state.aiModel,
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targetItemId: item.id,
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targetLabel: label,
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);
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if (lesson == null) {
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if (mounted) setState(() => generatingLesson = false);
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if (mounted) {
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ScaffoldMessenger.of(
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context,
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).showSnackBar(const SnackBar(content: Text('未生成合格补练，继续使用本地复习题。')));
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}
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return;
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}
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final approved = await AiService.instance.auditGeneratedLesson(
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provider: widget.state.aiProvider,
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endpoint: widget.state.aiEndpoint,
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model: widget.state.aiModel,
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lesson: lesson,
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);
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if (!mounted) return;
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setState(() => generatingLesson = false);
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if (!approved) {
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ScaffoldMessenger.of(
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context,
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).showSnackBar(const SnackBar(content: Text('补练未通过独立审核，未保存。')));
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return;
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}
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widget.state.cacheApprovedAdaptiveLesson(
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lesson,
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auditor: '${widget.state.aiProvider.name}:${widget.state.aiModel}',
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);
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widget.onOpenAdaptiveLesson();
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}
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@override
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Widget build(BuildContext context) {
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final item = widget.state.dueReviews.isEmpty
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? null
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: widget.state.dueReviews.first;
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if (item == null) {
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return AppPage(
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child: SpacedColumn(
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children: [
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const Eyebrow('今日复习已完成'),
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Text(
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'到期项目已安排下次复练。',
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style: Theme.of(context).textTheme.headlineMedium,
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),
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const Text('记住不是一次答对就结束；系统会在不同间隔再次确认你仍能用出来。'),
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PrimaryButton(label: '回到首页', onPressed: widget.onFinished),
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],
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),
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);
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}
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final checkpoint =
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widget.state.mastery[item.id]?.checkpoint ?? item.successfulReviews;
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final checkpointLabel = checkpoint >= 4
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? '30 天抽查'
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: '第 ${checkpoint + 1} / 4 个间隔检查点';
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return AppPage(
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child: SpacedColumn(
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children: [
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Eyebrow('今天复习 · ${widget.state.dueReviewCount} 项待完成'),
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Text('不看答案，试着回答。', style: Theme.of(context).textTheme.headlineMedium),
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Text(
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'目标技能：${item.skill}',
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style: Theme.of(context).textTheme.bodyMedium,
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),
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Text(
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checkpointLabel,
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style: const TextStyle(color: AppColors.green, fontSize: 13),
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),
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if (item.isAiGenerated)
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Row(
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children: [
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const Expanded(
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child: Text(
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'AI 生成题面 · 已通过客户端结构审核',
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style: TextStyle(color: AppColors.muted, fontSize: 12),
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),
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),
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TextButton(
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onPressed: () {
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widget.state.reportGeneratedReviewVariant(item);
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controller.clear();
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setState(() {
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showHint = false;
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usedHelp = false;
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validationMessage = null;
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});
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ScaffoldMessenger.of(context).showSnackBar(
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const SnackBar(content: Text('已隔离该 AI 题面，并换回本地审核题。')),
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);
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},
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child: const Text('内容有问题'),
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),
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],
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),
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SectionCard(
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tint: AppColors.softGreen,
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child: SpacedColumn(
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children: [
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const Text(
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'情境',
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style: TextStyle(
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color: AppColors.green,
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fontWeight: FontWeight.w600,
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),
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),
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Text(item.prompt, style: const TextStyle(fontSize: 19)),
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],
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),
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),
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TextField(
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controller: controller,
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minLines: 2,
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maxLines: 4,
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onChanged: (_) => setState(() {}),
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decoration: const InputDecoration(
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hintText: '输入你会怎么回答',
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filled: true,
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fillColor: AppColors.surface,
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border: OutlineInputBorder(),
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),
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),
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Wrap(
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spacing: 8,
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runSpacing: 8,
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children: [
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ActionChip(
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label: const Text('需要提示'),
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onPressed: () => setState(() {
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showHint = true;
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usedHelp = true;
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validationMessage = null;
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}),
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),
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ActionChip(
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label: const Text('稍后复习'),
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onPressed: () {
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widget.state.postponeReview(item);
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setState(() {});
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},
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),
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ActionChip(
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label: const Text('暂时想不起来'),
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onPressed: () {
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widget.state.reportReviewFailure(item);
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controller.clear();
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setState(() {
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showHint = false;
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usedHelp = false;
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validationMessage = null;
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});
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},
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),
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ActionChip(
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label: Text(generatingVariant ? '正在生成…' : '生成变式'),
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onPressed: generatingVariant
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? null
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: () => _generateVariant(item),
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),
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if (a0CoreItems.containsKey(item.id))
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ActionChip(
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label: Text(generatingLesson ? '审核补练中…' : '生成四技能补练'),
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onPressed: generatingLesson
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? null
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: () => _generateAdaptiveLesson(item),
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),
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],
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),
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if (showHint)
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SectionCard(
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tint: AppColors.warm,
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child: Text(
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'参考：${item.hint}\n目标：${item.target}',
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style: const TextStyle(color: AppColors.warmInk),
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),
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),
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if (validationMessage != null)
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Text(
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validationMessage!,
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style: const TextStyle(color: AppColors.warmInk),
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),
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PrimaryButton(
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label: usedHelp ? '带提示完成' : '我能独立回答',
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onPressed: controller.text.trim().isEmpty
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? null
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: () => _next(item, assisted: usedHelp),
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),
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const Text(
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'提示后完成会在明天换题复练；第一次想不起来先复核，连续两次才会降低当前检查点。',
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style: TextStyle(fontSize: 12, color: AppColors.muted),
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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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/// Displays an audited AI-authored reinforcement lesson. It remains a
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/// teaching activity: the existing local review and assessment systems own
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/// all mastery decisions.
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class AdaptiveLessonPage extends StatefulWidget {
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const AdaptiveLessonPage({
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super.key,
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required this.state,
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required this.onFinished,
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});
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final AppState state;
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final VoidCallback onFinished;
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@override
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State<AdaptiveLessonPage> createState() => _AdaptiveLessonPageState();
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}
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class _AdaptiveLessonPageState extends State<AdaptiveLessonPage> {
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final controller = TextEditingController();
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int index = 0;
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bool showReference = false;
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String? answerFeedback;
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bool listening = false;
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bool transcribing = false;
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bool aiVoiceRecording = false;
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bool usedVoice = false;
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bool transcriptEdited = false;
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bool transcriptConfirmed = false;
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String lastTranscript = '';
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bool recording = false;
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bool playingRecording = false;
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String? recordingPath;
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@override
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void initState() {
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super.initState();
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final lesson = widget.state.cachedAdaptiveLesson;
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if (lesson != null &&
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widget.state.adaptiveLessonDraftId == lesson.lessonId) {
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index = widget.state.adaptiveLessonDraftIndex.clamp(
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0,
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lesson.tasks.length,
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);
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controller.text = widget.state.adaptiveLessonDraftAnswer;
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showReference = widget.state.adaptiveLessonDraftReferenceShown;
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usedVoice = widget.state.adaptiveLessonDraftUsedVoice;
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transcriptEdited = widget.state.adaptiveLessonDraftTranscriptEdited;
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transcriptConfirmed = widget.state.adaptiveLessonDraftTranscriptConfirmed;
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lastTranscript = widget.state.adaptiveLessonDraftOriginalTranscript;
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recordingPath = widget.state.adaptiveLessonDraftRecordingPath;
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}
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}
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@override
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void dispose() {
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VoiceService.instance.stopListening();
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VoiceService.instance.stopRecordingPlayback();
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if (!widget.state.keepRecordings) {
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VoiceService.instance.deleteRecording(recordingPath);
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}
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controller.dispose();
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super.dispose();
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}
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void _saveDraft(GeneratedLesson lesson) {
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widget.state.saveAdaptiveLessonDraft(
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lesson: lesson,
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taskIndex: index,
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answer: controller.text,
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referenceShown: showReference,
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usedVoice: usedVoice,
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transcriptEdited: transcriptEdited,
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transcriptConfirmed: transcriptConfirmed,
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originalTranscript: lastTranscript,
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recordingPath: widget.state.keepRecordings ? recordingPath : null,
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);
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}
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void _advance(GeneratedLesson lesson, GeneratedLessonTask task) {
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final correct = matchesAdaptiveLessonAnswer(task, controller.text);
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if (!showReference && !correct) {
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setState(() => answerFeedback = '还缺少目标表达中的关键信息。可以重试，或查看参考后以教学模式继续。');
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return;
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}
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widget.state.recordAdaptiveLessonTask(
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lesson: lesson,
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task: task,
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rawAnswer: controller.text.trim(),
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assisted: showReference,
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correct: correct,
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inputMode: usedVoice && !transcriptEdited && transcriptConfirmed
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? 'speechToText'
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: 'text',
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recordingPath: widget.state.keepRecordings ? recordingPath : null,
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originalTranscript: usedVoice ? lastTranscript : null,
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transcriptConfirmed:
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usedVoice && transcriptConfirmed && !transcriptEdited,
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transcriptEdited: usedVoice && transcriptEdited,
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);
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if (!widget.state.keepRecordings) {
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VoiceService.instance.deleteRecording(recordingPath);
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}
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final nextIndex = index + 1;
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if (nextIndex >= lesson.tasks.length) {
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widget.state.clearAdaptiveLessonDraft();
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} else {
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widget.state.saveAdaptiveLessonDraft(
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lesson: lesson,
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taskIndex: nextIndex,
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answer: '',
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referenceShown: false,
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originalTranscript: '',
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recordingPath: null,
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);
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}
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setState(() {
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controller.clear();
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showReference = false;
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answerFeedback = null;
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usedVoice = false;
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transcriptEdited = false;
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transcriptConfirmed = false;
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lastTranscript = '';
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recordingPath = null;
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index = nextIndex;
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});
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}
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Future<void> _toggleListening() async {
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if (aiVoiceRecording) {
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final path = await VoiceService.instance.stopRecording();
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if (!mounted) return;
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setState(() {
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aiVoiceRecording = false;
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listening = false;
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transcribing = true;
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});
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if (path != null) {
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final config = widget.state.aiConfig;
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final transcribed = await AiService.instance.transcribeAudio(
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filePath: path,
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provider: config.provider,
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endpoint: config.endpoint,
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model: config.model,
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);
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if (mounted) {
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setState(() {
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transcribing = false;
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if (transcribed != null && transcribed.trim().isNotEmpty) {
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controller.text = transcribed.trim();
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usedVoice = true;
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transcriptEdited = false;
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transcriptConfirmed = false;
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lastTranscript = transcribed.trim();
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}
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});
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final lesson = widget.state.cachedAdaptiveLesson;
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if (lesson != null) _saveDraft(lesson);
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if (transcribed == null || transcribed.trim().isEmpty) {
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ScaffoldMessenger.of(context).showSnackBar(
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const SnackBar(content: Text('未识别到清晰语音，请再试一次或输入文本。')),
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);
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}
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}
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} else {
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if (mounted) setState(() => transcribing = false);
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}
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return;
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}
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if (listening) {
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await VoiceService.instance.stopListening();
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if (mounted) setState(() => listening = false);
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return;
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}
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final ready = await VoiceService.instance.startListening(
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(text, _) {
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if (!mounted) return;
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setState(() {
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controller.text = text;
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usedVoice = true;
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transcriptEdited = false;
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transcriptConfirmed = false;
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lastTranscript = text;
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});
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final lesson = widget.state.cachedAdaptiveLesson;
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if (lesson != null) _saveDraft(lesson);
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},
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onStatus: (status) {
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if (mounted && (status == 'notListening' || status == 'done')) {
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setState(() => listening = false);
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}
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},
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onError: (err) {
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if (mounted) {
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setState(() => listening = false);
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}
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},
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);
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if (!ready) {
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final recordStarted = await VoiceService.instance.startRecording();
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if (mounted) {
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setState(() {
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aiVoiceRecording = recordStarted;
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listening = recordStarted;
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});
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if (recordStarted) {
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ScaffoldMessenger.of(context).showSnackBar(
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const SnackBar(content: Text('已启动麦克风录音，说完后再次点击，AI 将自动转写为英文。')),
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);
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} else {
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ScaffoldMessenger.of(context).showSnackBar(
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const SnackBar(content: Text('无法访问麦克风，请检查录音权限。你仍可输入英文完成补练。')),
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);
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}
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}
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return;
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}
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if (!mounted) return;
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setState(() => listening = ready);
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}
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Future<void> _toggleRecording() async {
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if (recording) {
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final path = await VoiceService.instance.stopRecording();
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if (mounted) {
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setState(() {
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recording = false;
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recordingPath = path;
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});
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}
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return;
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}
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await VoiceService.instance.deleteRecording(recordingPath);
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final ready = await VoiceService.instance.startRecording();
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if (!mounted) return;
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setState(() {
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recording = ready;
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if (ready) recordingPath = null;
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});
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if (!ready) {
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ScaffoldMessenger.of(
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context,
|
|
).showSnackBar(const SnackBar(content: Text('无法使用麦克风录音；请检查系统权限。')));
|
|
}
|
|
}
|
|
|
|
Future<void> _playRecording() async {
|
|
final path = recordingPath;
|
|
if (path == null) return;
|
|
setState(() => playingRecording = true);
|
|
await VoiceService.instance.playRecording(
|
|
path,
|
|
onComplete: () {
|
|
if (mounted) setState(() => playingRecording = false);
|
|
},
|
|
);
|
|
}
|
|
|
|
Future<void> _deleteRecording() async {
|
|
await VoiceService.instance.deleteRecording(recordingPath);
|
|
if (mounted) setState(() => recordingPath = null);
|
|
}
|
|
|
|
@override
|
|
Widget build(BuildContext context) {
|
|
final lesson = widget.state.cachedAdaptiveLesson;
|
|
if (lesson == null) {
|
|
return AppPage(
|
|
appBar: AppBar(
|
|
leading: IconButton(
|
|
icon: const Icon(Icons.arrow_back),
|
|
tooltip: "返回",
|
|
onPressed: widget.onFinished,
|
|
),
|
|
title: const Text("AI 四技能补练"),
|
|
),
|
|
child: SpacedColumn(
|
|
children: [
|
|
const Eyebrow('AI 四技能补练'),
|
|
const Text('没有可用的已审核补练。'),
|
|
PrimaryButton(label: '回到复习', onPressed: widget.onFinished),
|
|
],
|
|
),
|
|
);
|
|
}
|
|
final done = index >= lesson.tasks.length;
|
|
if (done) {
|
|
return AppPage(
|
|
appBar: AppBar(
|
|
leading: IconButton(
|
|
icon: const Icon(Icons.arrow_back),
|
|
tooltip: "返回",
|
|
onPressed: widget.onFinished,
|
|
),
|
|
title: const Text("补练完成"),
|
|
),
|
|
child: SpacedColumn(
|
|
children: [
|
|
const Eyebrow('补练已完成'),
|
|
Text(
|
|
'你完成了这组四技能教学补练。',
|
|
style: Theme.of(context).textTheme.headlineMedium,
|
|
),
|
|
const Text('这组 AI 内容只作教学复练；掌握度仍由本地复习与出口评估的有效证据决定。'),
|
|
PrimaryButton(label: '回到复习', onPressed: widget.onFinished),
|
|
],
|
|
),
|
|
);
|
|
}
|
|
final task = lesson.tasks[index];
|
|
final showStimulus = task.skill != 'listening';
|
|
return AppPage(
|
|
appBar: AppBar(
|
|
leading: IconButton(
|
|
icon: const Icon(Icons.arrow_back),
|
|
tooltip: "返回",
|
|
onPressed: widget.onFinished,
|
|
),
|
|
title: Text('AI 补练 · ${index + 1}/4'),
|
|
),
|
|
child: SpacedColumn(
|
|
children: [
|
|
Eyebrow('${_skillLabel(task.skill)} · 已审核教学内容'),
|
|
if (widget.state.cachedAdaptiveLessonAuditedAt != null)
|
|
Text(
|
|
'审核：${widget.state.cachedAdaptiveLessonAuditor ?? '已配置服务'} · '
|
|
'${_formatAuditTime(widget.state.cachedAdaptiveLessonAuditedAt!)}',
|
|
style: const TextStyle(color: AppColors.muted, fontSize: 12),
|
|
),
|
|
Text(task.prompt, style: Theme.of(context).textTheme.headlineMedium),
|
|
if (showStimulus)
|
|
SectionCard(
|
|
tint: AppColors.softGreen,
|
|
child: Text(task.stimulus, style: const TextStyle(fontSize: 20)),
|
|
)
|
|
else
|
|
const SectionCard(
|
|
tint: AppColors.surfaceMuted,
|
|
child: Text('先播放音频，再输入你听到的答案。'),
|
|
),
|
|
Row(
|
|
children: [
|
|
Expanded(
|
|
child: OutlinedButton.icon(
|
|
onPressed: () => VoiceService.instance.speak(task.stimulus),
|
|
icon: const Icon(Icons.volume_up_outlined),
|
|
label: const Text('播放'),
|
|
),
|
|
),
|
|
const SizedBox(width: 8),
|
|
Expanded(
|
|
child: OutlinedButton.icon(
|
|
onPressed: () =>
|
|
VoiceService.instance.speak(task.stimulus, slow: true),
|
|
icon: const Icon(Icons.slow_motion_video_outlined),
|
|
label: const Text('慢放'),
|
|
),
|
|
),
|
|
],
|
|
),
|
|
TextField(
|
|
controller: controller,
|
|
minLines: 2,
|
|
maxLines: 4,
|
|
onChanged: (_) {
|
|
if (usedVoice && controller.text != lastTranscript) {
|
|
transcriptEdited = true;
|
|
transcriptConfirmed = false;
|
|
}
|
|
_saveDraft(lesson);
|
|
setState(() {});
|
|
},
|
|
decoration: InputDecoration(
|
|
hintText: '输入或说出你的答案后，再继续',
|
|
filled: true,
|
|
fillColor: AppColors.surface,
|
|
prefixIcon: IconButton(
|
|
tooltip: transcribing
|
|
? '正在 AI 识别…'
|
|
: (listening ? '停止录音并识别' : '语音输入'),
|
|
onPressed: _toggleListening,
|
|
icon: transcribing
|
|
? const SizedBox(
|
|
width: 18,
|
|
height: 18,
|
|
child: CircularProgressIndicator(strokeWidth: 2),
|
|
)
|
|
: Icon(
|
|
listening
|
|
? Icons.stop_circle_outlined
|
|
: Icons.mic_none,
|
|
color: listening ? AppColors.green : null,
|
|
),
|
|
),
|
|
border: OutlineInputBorder(),
|
|
),
|
|
),
|
|
if (task.skill == 'speaking')
|
|
SectionCard(
|
|
tint: AppColors.surfaceMuted,
|
|
child: SpacedColumn(
|
|
spacing: 8,
|
|
children: [
|
|
Text(
|
|
widget.state.keepRecordings
|
|
? '可录音回听并仅保存在本机；不会发送给 AI。'
|
|
: '可录音回听；离开本页后会自动删除。',
|
|
),
|
|
Row(
|
|
children: [
|
|
Expanded(
|
|
child: OutlinedButton.icon(
|
|
onPressed: listening ? null : _toggleRecording,
|
|
icon: Icon(
|
|
recording
|
|
? Icons.stop_circle_outlined
|
|
: Icons.fiber_manual_record,
|
|
),
|
|
label: Text(recording ? '停止录音' : '录音回听'),
|
|
),
|
|
),
|
|
if (recordingPath != null) ...[
|
|
const SizedBox(width: 8),
|
|
IconButton(
|
|
tooltip: playingRecording ? '正在播放' : '回听录音',
|
|
onPressed: playingRecording ? null : _playRecording,
|
|
icon: const Icon(Icons.play_arrow),
|
|
),
|
|
IconButton(
|
|
tooltip: '删除录音',
|
|
onPressed: _deleteRecording,
|
|
icon: const Icon(Icons.delete_outline),
|
|
),
|
|
],
|
|
],
|
|
),
|
|
],
|
|
),
|
|
),
|
|
if (usedVoice)
|
|
SectionCard(
|
|
tint: transcriptEdited || !transcriptConfirmed
|
|
? AppColors.warm
|
|
: AppColors.softGreen,
|
|
child: SpacedColumn(
|
|
spacing: 6,
|
|
children: [
|
|
Text(
|
|
transcriptEdited
|
|
? '你修改了设备转写：本次将按文字教学练习保存。'
|
|
: transcriptConfirmed
|
|
? '已确认设备转写：会保留本次语音输入记录。'
|
|
: '请核对设备转写；确认前会按文字教学练习保存。',
|
|
),
|
|
if (!transcriptEdited && !transcriptConfirmed)
|
|
TextButton(
|
|
onPressed: () {
|
|
setState(() => transcriptConfirmed = true);
|
|
_saveDraft(lesson);
|
|
},
|
|
child: const Text('确认转写无误'),
|
|
),
|
|
],
|
|
),
|
|
),
|
|
if (answerFeedback != null)
|
|
Text(
|
|
answerFeedback!,
|
|
style: const TextStyle(color: AppColors.warmInk),
|
|
),
|
|
if (showReference)
|
|
SectionCard(
|
|
tint: AppColors.warm,
|
|
child: Text('参考表达：${task.answer}'),
|
|
)
|
|
else
|
|
TextButton(
|
|
onPressed: () {
|
|
setState(() => showReference = true);
|
|
_saveDraft(lesson);
|
|
},
|
|
child: const Text('需要帮助，查看参考表达'),
|
|
),
|
|
TextButton.icon(
|
|
onPressed: () {
|
|
widget.state.reportAdaptiveLesson(lesson);
|
|
ScaffoldMessenger.of(context).showSnackBar(
|
|
const SnackBar(content: Text('已隔离这组 AI 补练内容，并返回复习。')),
|
|
);
|
|
widget.onFinished();
|
|
},
|
|
icon: const Icon(Icons.flag_outlined),
|
|
label: const Text('内容有问题'),
|
|
),
|
|
PrimaryButton(
|
|
label: index == lesson.tasks.length - 1 ? '完成补练' : '下一项',
|
|
onPressed: controller.text.trim().isNotEmpty
|
|
? () => _advance(lesson, task)
|
|
: null,
|
|
),
|
|
],
|
|
),
|
|
);
|
|
}
|
|
|
|
String _skillLabel(String skill) => switch (skill) {
|
|
'listening' => '听力',
|
|
'speaking' => '口语',
|
|
'reading' => '阅读',
|
|
_ => '写作',
|
|
};
|
|
|
|
String _formatAuditTime(DateTime value) =>
|
|
'${value.year}-${value.month.toString().padLeft(2, '0')}-${value.day.toString().padLeft(2, '0')} '
|
|
'${value.hour.toString().padLeft(2, '0')}:${value.minute.toString().padLeft(2, '0')}';
|
|
}
|