fix: 修正学习流程中的证据、复习与进度问题
- 独立尝试按课程要求校验内容，不再任意输入即算独立成功 - 复习节点改为学后第 1/3/7/14 天，之后每 30 天抽查；复习轮换情境 - 掌握状态按作答记录推导：需认识、可回忆、跨情境使用及最近两次无帮助 - 课程证据按实际用到的目标记录；跟读与课程对话只算辅助练习 - 复习成功不再降低已有状态 - 学完课程后进入下一节未完成课程；全部学完后引导巩固与阶段评估 - 新增 3 题基础定位，按结果设置起始课程 - 新增按课程开放的对话场景，首页推荐最少练习的场景 - 切换课程时清空上一课的步骤进度 - AI 返回 JSON 格式并按 JSON 回放历史；拼写校验忽略大小写与连字符；移除学习目标选择 Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
This commit is contained in:
shenlei
@@ -11,54 +11,93 @@ import '../../widgets/lexicon_lookup.dart';
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import '../../widgets/voice_answer.dart';
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class DialogueScenePage extends StatelessWidget {
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const DialogueScenePage({super.key, required this.onStart, this.onBack});
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final VoidCallback onStart;
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const DialogueScenePage({
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super.key,
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required this.state,
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required this.onStart,
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this.onBack,
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});
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final AppState state;
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final ValueChanged<String> onStart;
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final VoidCallback? onBack;
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@override
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Widget build(BuildContext context) => AppPage(
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appBar: onBack != null
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? AppBar(
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leading: IconButton(
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icon: const Icon(Icons.arrow_back),
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tooltip: "返回",
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onPressed: onBack,
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),
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title: const Text("AI 情境对话"),
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)
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: null,
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Widget build(BuildContext context) {
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final recommended = state.recommendedScene;
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return AppPage(
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appBar: onBack != null
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? AppBar(
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leading: IconButton(
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icon: const Icon(Icons.arrow_back),
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tooltip: "返回",
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onPressed: onBack,
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),
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title: const Text("AI 情境对话"),
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)
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: null,
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child: SpacedColumn(
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children: [
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const Eyebrow('按当前水平推荐'),
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Text(
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'选一个场景，开口练习。',
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style: Theme.of(context).textTheme.headlineMedium,
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),
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Text(
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'每轮 4 次回答，完成明确任务后结束。',
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style: Theme.of(context).textTheme.bodyMedium,
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),
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for (final scene in a0Scenes)
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if (state.isSceneUnlocked(scene))
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_OpenScene(
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scene: scene,
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recommended: scene.id == recommended.id,
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onStart: () => onStart(scene.id),
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)
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else
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_LockedScene(
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title: scene.title,
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note:
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'A0 · 学完第 ${lessonById(scene.unlockAfterLessonId!).number} 课后开放',
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),
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const _LockedScene(title: '咖啡店点单', note: 'A1 · 后续版本开放'),
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],
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),
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);
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}
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}
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class _OpenScene extends StatelessWidget {
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const _OpenScene({
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required this.scene,
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required this.recommended,
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required this.onStart,
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});
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final DialogueScene scene;
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final bool recommended;
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final VoidCallback onStart;
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@override
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Widget build(BuildContext context) => SectionCard(
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tint: recommended ? AppColors.softGreen : null,
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child: SpacedColumn(
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children: [
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const Eyebrow('按当前水平推荐'),
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Text('选一个场景，开口练习。', style: Theme.of(context).textTheme.headlineMedium),
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Text(
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'每轮 4 次回答，完成明确任务后结束。',
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style: Theme.of(context).textTheme.bodyMedium,
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Row(
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mainAxisAlignment: MainAxisAlignment.spaceBetween,
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children: [
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Text(
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scene.title,
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style: const TextStyle(fontSize: 17, fontWeight: FontWeight.w600),
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),
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Text(
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recommended ? 'A0 · 推荐' : 'A0',
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style: const TextStyle(color: AppColors.green),
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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 Row(
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mainAxisAlignment: MainAxisAlignment.spaceBetween,
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children: [
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Text(
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'初次见面',
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style: TextStyle(fontSize: 17, fontWeight: FontWeight.w600),
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),
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Text('A0', style: TextStyle(color: AppColors.green)),
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],
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),
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Text(
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'介绍姓名、地点、状态或喜好，并反问对方',
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style: Theme.of(context).textTheme.bodyMedium,
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),
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PrimaryButton(label: '开始对话', onPressed: onStart),
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],
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),
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),
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const _LockedScene(title: '认识新同学', note: 'A0 · 后续版本开放'),
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const _LockedScene(title: '咖啡店', note: 'A1 · 后续版本开放'),
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Text(scene.summary, style: Theme.of(context).textTheme.bodyMedium),
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recommended
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? PrimaryButton(label: '开始对话', onPressed: onStart)
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: SecondaryButton(label: '开始对话', onPressed: onStart),
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],
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),
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);
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@@ -94,10 +133,14 @@ class DialoguePage extends StatefulWidget {
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required this.state,
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required this.onFinished,
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this.isLessonDialogue = false,
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this.sceneId = 'a0-meet',
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});
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final AppState state;
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final ValueChanged<DialogueSummaryData?> onFinished;
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final bool isLessonDialogue;
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/// The free scene to run when this is not a lesson dialogue.
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final String sceneId;
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@override
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State<DialoguePage> createState() => _DialoguePageState();
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}
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@@ -124,8 +167,18 @@ class _DialoguePageState extends State<DialoguePage>
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/// the dialogue ends: the spec forbids interrupting a beginner turn by turn.
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String? latestFeedback;
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/// The free scene stores its draft under its own id.
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static const _sceneDraftId = 'scene-a0-meet';
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DialogueScene get _scene => sceneById(widget.sceneId);
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/// A free scene may use everything the learner has finished so far.
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String get _furthestCompletedLessonId => a0SeedLessons
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.lastWhere(
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(lesson) => widget.state.completedLessonIds.contains(lesson.id),
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orElse: () => a0SeedLessons.first,
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)
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.id;
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/// Each free scene stores its draft under its own id.
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String get _sceneDraftId => 'scene-${_scene.id}';
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/// Closing line for the turn after the last scripted prompt. It stays inside
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/// taught A0 language instead of the old "Wonderful — nice meeting you!".
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@@ -143,7 +196,7 @@ class _DialoguePageState extends State<DialoguePage>
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.id,
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widget.state.activeLessonId,
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)
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: a0MeetDialogue;
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: _scene.script;
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/// Only exact sentence matches are trusted. The old positional fallback
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/// attached `script.translations[stage]` to whatever the AI happened to say,
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@@ -286,8 +339,10 @@ class _DialoguePageState extends State<DialoguePage>
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return;
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}
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widget.state.recordDialogueAttempt(
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taskId:
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'dialogue-${widget.isLessonDialogue ? _lessonSegmentId : 'a0-meet'}-$stage',
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taskId: widget.isLessonDialogue
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? 'dialogue-$_lessonSegmentId-$stage'
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: 'dialogue-scene-${_scene.id}-$stage',
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sceneId: widget.isLessonDialogue ? null : _scene.id,
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rawAnswer: text,
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assisted: usedHelp,
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spoken: usedVoice && !transcriptEdited,
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@@ -320,7 +375,10 @@ class _DialoguePageState extends State<DialoguePage>
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: 'nothing more, the conversation is finished',
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allowedLanguage: widget.isLessonDialogue
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? taughtLanguageUpTo(widget.state.activeLessonId)
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: allTaughtLanguage,
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: _scene.unlockAfterLessonId == null
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// The always-open scene mixes every A0 topic, as its script does.
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? allTaughtLanguage
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: taughtLanguageUpTo(_furthestCompletedLessonId),
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history: turns
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.map(
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(turn) => <String, String>{
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@@ -409,7 +467,7 @@ class _DialoguePageState extends State<DialoguePage>
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final personalSentence = learnerTurns.isEmpty
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? 'My name is …'
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: learnerTurns.first.text;
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widget.state.addDialogueRecap(personalSentence);
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widget.state.addDialogueRecap(personalSentence, sceneId: _scene.id);
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widget.onFinished(
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DialogueSummaryData(
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// Only the turns the learner actually passed are reported.
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@@ -584,7 +642,7 @@ class _DialoguePageState extends State<DialoguePage>
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onPressed: () => widget.onFinished(null),
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),
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title: Text(
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'${widget.isLessonDialogue ? '课程对话' : '初次见面'} · ${finished ? totalStages : stage + 1} / $totalStages',
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'${widget.isLessonDialogue ? '课程对话' : _scene.title} · ${finished ? totalStages : stage + 1} / $totalStages',
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),
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),
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child: SpacedColumn(
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