更新

2026-09-28 20:12:34 +08:00
parent 847986f861
commit 5f53bd8f94
60 changed files with 14624 additions and 398 deletions
@@ -0,0 +1,171 @@
+/// ============================================================
+/// 题目数据适配层
+///
+/// 集中处理 QuestionModel 与 UI 组件（RichTextContent / Upload）
+/// 之间的数据转换，对标 Vue classExercisesPage.vue 内的
+/// stemRenderData / mergedAudios / mergedVideos /
+/// getImageAnswerList / getSafeImageAnswerList。
+/// ============================================================
+library;
+
+import 'dart:convert';
+
+import 'package:new_learn/core/components/upload.dart';
+import 'package:new_learn/core/utils/question/extract_media_from_stem.dart';
+import 'package:new_learn/core/utils/question/question_parser.dart';
+
+import 'question_model.dart';
+
+/// 题干渲染数据（已格式化 + 已抽取并合并媒体）
+class StemRenderData {
+  const StemRenderData({
+    required this.content,
+    this.audios = const [],
+    this.videos = const [],
+  });
+
+  final String content;
+  final List<Map<String, dynamic>> audios;
+  final List<Map<String, dynamic>> videos;
+}
+
+class QuestionDataAdapter {
+  QuestionDataAdapter._();
+
+  /// 等价 Vue 页内 stemRenderData + mergedAudios + mergedVideos
+  static StemRenderData buildStemMedia(QuestionModel q, int activeSubIndex) {
+    var stem = q.stem.isEmpty ? '暂无题干' : q.stem;
+    final hasChilds = q.childs.isNotEmpty;
+    final hasBkTags = q.bkTagMetaList.isNotEmpty;
+
+    if (hasChilds || hasBkTags) {
+      final disableHighlight = !hasChilds && q.bkTagMetaList.length == 1;
+      final subQuestions =
+          q.subQuestions.isNotEmpty ? q.subQuestions.map((e) => e.m).toList() : q.childs.map((e) => e.m).toList();
+      // 图片作答（1）不做填空锚点格式化
+      if (q.isFillblankItemUpload != 1) {
+        stem = formatCompoundStem(
+          stem,
+          activeSubIndex,
+          disableHighlight: disableHighlight,
+          subQuestions: subQuestions,
+        );
+      }
+      // 数学学科：数字占位符转圈号
+      if ('${q.baseSubjectId}' == '2') {
+        stem = convertBlankToCircled(stem);
+      }
+    }
+
+    final media = extractMediaFromStem(stem);
+
+    // 合并题干内嵌媒体与 q.audios/q.videos（按 url 去重，保持 JS 顺序）
+    final audios = <Map<String, dynamic>>[];
+    for (final item in [...media.audios, ...q.audios]) {
+      final url = '${item['audioUrl'] ?? item['url'] ?? ''}';
+      if (url.isEmpty) continue;
+      if (audios.any((it) => '${it['audioUrl'] ?? it['url']}' == url)) continue;
+      audios.add(item);
+    }
+
+    final videos = <Map<String, dynamic>>[];
+    for (final item in [...media.videos, ...q.videos]) {
+      final url = '${item['videoUrl'] ?? item['url'] ?? ''}';
+      if (url.isEmpty) continue;
+      if (videos.any((it) => '${it['videoUrl'] ?? it['url']}' == url)) continue;
+      videos.add(item);
+    }
+
+    return StemRenderData(
+      content: media.content.isNotEmpty ? media.content : (q.stem.isNotEmpty ? q.stem : '暂无题干'),
+      audios: audios,
+      videos: videos,
+    );
+  }
+
+  /// 单空填空题输入框值（对标 singleBlankInputValue）
+  static String singleBlankInputValue(QuestionModel q) {
+    final direct = q.userAnswer;
+    if (direct.isNotEmpty) return direct;
+    for (final child in q.childs) {
+      final v = '${child.m['userAnswer'] ?? child.m['myAnswer'] ?? ''}';
+      if (v.isNotEmpty) return v;
+    }
+    return '';
+  }
+
+  /// 严格解析：getImageAnswerList（外层保证是 JSON 数组字符串）
+  static List<Map<String, dynamic>> parseImageAnswerList(dynamic value) {
+    if (value == null || '$value'.isEmpty) return const [];
+    dynamic data;
+    try {
+      data = value is String ? jsonDecode(value) : value;
+    } catch (_) {
+      return const [];
+    }
+    if (data is! List) return const [];
+    return data.whereType<Map>().map((raw) {
+      final item = Map<String, dynamic>.from(raw);
+      item['url'] = item['Url'] ?? item['url'];
+      item['thumbnailUrl'] = item['ThumbnailUrl'] ?? item['thumbnailUrl'];
+      return item;
+    }).toList();
+  }
+
+  /// 安全解析：getSafeImageAnswerList（兜底解析 userAnswer / notes）
+  static List<Map<String, dynamic>> safeImageAnswerList(dynamic value) {
+    if (value == null || '$value'.isEmpty) return const [];
+    dynamic list;
+    try {
+      list = value is String ? jsonDecode(value) : value;
+    } catch (_) {
+      return const [];
+    }
+    if (list is! List) return const [];
+    return list
+        .whereType<Map>()
+        .map((raw) {
+          final item = Map<String, dynamic>.from(raw);
+          final url = '${item['url'] ?? item['Url'] ?? ''}';
+          final thumbnailUrl =
+              '${item['thumbnailUrl'] ?? item['ThumbnailUrl'] ?? url}';
+          return {...item, 'url': url, 'thumbnailUrl': thumbnailUrl};
+        })
+        .where((item) => '${item['url']}'.isNotEmpty)
+        .toList();
+  }
+
+  /// 后端图片数据 → Upload 组件入参
+  static List<UploadItem> toUploadItems(List<Map<String, dynamic>> images) {
+    return images
+        .where((item) => '${item['url']}'.isNotEmpty)
+        .map((item) => UploadItem(
+              id: item['id'],
+              url: '${item['url']}',
+              thumbnailUrl: '${item['thumbnailUrl'] ?? item['url']}',
+            ))
+        .toList();
+  }
+
+  /// Upload 组件当前列表 → 提交用 answerImgs
+  /// （同时带 url/Url、thumbnailUrl/ThumbnailUrl 兼容后端）
+  static List<Map<String, dynamic>> uploadItemsToAnswerImgs(
+    List<UploadItem> items,
+  ) {
+    return items
+        .where((e) => e.url.isNotEmpty)
+        .map((e) => {
+              'url': e.url,
+              'Url': e.url,
+              'thumbnailUrl': e.thumbnailUrl ?? e.url,
+              'ThumbnailUrl': e.thumbnailUrl ?? e.url,
+            })
+        .toList();
+  }
+
+  /// Upload 组件当前列表 → 写回 userAnswer 的 JSON 字符串
+  /// （对标 Vue handleUploadChange: JSON.stringify(e)）
+  static String uploadItemsToJson(List<UploadItem> items) {
+    return jsonEncode(uploadItemsToAnswerImgs(items));
+  }
+}