feat(translation): 添加删除翻译记录功能

- 在历史记录控制器中添加删除会话历史方法
- 在详情控制器中添加删除单条记录方法
- 在视图中添加删除按钮和确认对话框
- 支持从内存和本地存储中同步删除记录

lib/modules/translation/controllers/translation_controller.dart

@@ -944,6 +944,84 @@ class TranslationController extends GetxController {
     _storage.remove(_historyKey);
   }
 
+  // 删除指定会话的所有翻译记录
+  void deleteSessionHistory(String sessionId) {
+    try {
+      // 1. 从内存中删除该会话的所有记录
+      final originalCount = translationHistory.length;
+      translationHistory.removeWhere((item) => item.sessionId == sessionId);
+      final removedFromMemory = originalCount - translationHistory.length;
+
+      // 2. 从本地存储中删除该会话的记录
+      final historyJson = _storage.read(_historyKey);
+      int removedFromStorage = 0;
+
+      if (historyJson != null) {
+        final List<dynamic> historyList = jsonDecode(historyJson);
+        final List<TranslationItem> storedHistory =
+            historyList.map((item) => TranslationItem.fromJson(item)).toList();
+
+        final originalStoredCount = storedHistory.length;
+        storedHistory.removeWhere((item) => item.sessionId == sessionId);
+        removedFromStorage = originalStoredCount - storedHistory.length;
+
+        // 重新保存更新后的存储数据
+        final List<Map<String, dynamic>> updatedHistoryJson =
+            storedHistory.map((item) => item.toJson()).toList();
+        _storage.write(_historyKey, jsonEncode(updatedHistoryJson));
+      }
+
+      // 3. 刷新UI显示
+      translationHistory.refresh();
+
+      Logger.info('删除会话历史成功: sessionId=$sessionId, 内存删除${removedFromMemory}条, 存储删除${removedFromStorage}条');
+    } catch (e) {
+      Logger.error('删除会话历史失败: ${e.toString()}');
+      rethrow; // 重新抛出异常，让调用方处理
+    }
+  }
+
+  // 删除指定的单条翻译记录
+  void deleteTranslationItem(String sessionId, DateTime timestamp) {
+    try {
+      // 1. 从内存中删除指定的翻译记录
+      final originalCount = translationHistory.length;
+      translationHistory.removeWhere((item) =>
+          item.sessionId == sessionId &&
+          item.timestamp.millisecondsSinceEpoch == timestamp.millisecondsSinceEpoch);
+      final removedFromMemory = originalCount - translationHistory.length;
+
+      // 2. 从本地存储中删除指定的翻译记录
+      final historyJson = _storage.read(_historyKey);
+      int removedFromStorage = 0;
+
+      if (historyJson != null) {
+        final List<dynamic> historyList = jsonDecode(historyJson);
+        final List<TranslationItem> storedHistory =
+            historyList.map((item) => TranslationItem.fromJson(item)).toList();
+
+        final originalStoredCount = storedHistory.length;
+        storedHistory.removeWhere((item) =>
+            item.sessionId == sessionId &&
+            item.timestamp.millisecondsSinceEpoch == timestamp.millisecondsSinceEpoch);
+        removedFromStorage = originalStoredCount - storedHistory.length;
+
+        // 重新保存更新后的存储数据
+        final List<Map<String, dynamic>> updatedHistoryJson =
+            storedHistory.map((item) => item.toJson()).toList();
+        _storage.write(_historyKey, jsonEncode(updatedHistoryJson));
+      }
+
+      // 3. 刷新UI显示
+      translationHistory.refresh();
+
+      Logger.info('删除单条翻译记录成功: sessionId=$sessionId, timestamp=${timestamp.toIso8601String()}, 内存删除${removedFromMemory}条, 存储删除${removedFromStorage}条');
+    } catch (e) {
+      Logger.error('删除单条翻译记录失败: ${e.toString()}');
+      rethrow; // 重新抛出异常，让调用方处理
+    }
+  }
+
   // 滚动到底部 (公共方法，用于向后兼容)
   void scrollToBottom({bool animate = true}) {
     _scrollToBottom();

lib/modules/translation/controllers/translation_detail_controller.dart

@@ -1,3 +1,4 @@
+import 'package:flutter/material.dart';
 import 'package:get/get.dart';
 import '../../../data/services/volcano_ai_service.dart';
 import '../controllers/translation_controller.dart';
@@ -182,10 +183,63 @@ class TranslationDetailController extends GetxController {
     }
   }
   
+  // 删除单条翻译记录
+  Future<void> deleteTranslationItem(TranslationItem item) async {
+    try {
+      // 调用主控制器的删除方法
+      historyController.translationController.deleteTranslationItem(
+        item.sessionId,
+        item.timestamp
+      );
+
+      // 从当前会话项目列表中移除该项目
+      sessionItems.removeWhere((sessionItem) =>
+          sessionItem.sessionId == item.sessionId &&
+          sessionItem.timestamp.millisecondsSinceEpoch == item.timestamp.millisecondsSinceEpoch);
+
+      // 重新加载历史控制器的数据
+      await historyController.loadHistoryData();
+
+      // 检查是否删除了会话中的最后一条记录
+      if (sessionItems.isEmpty) {
+        // 如果会话为空，返回上级页面
+        Get.back();
+        Get.snackbar(
+          '删除成功',
+          '已删除该翻译记录，会话已清空',
+          snackPosition: SnackPosition.BOTTOM,
+          backgroundColor: Get.isDarkMode ? Colors.grey[800] : Colors.grey[200],
+          colorText: Get.isDarkMode ? Colors.white : Colors.black,
+          duration: const Duration(seconds: 2),
+        );
+      } else {
+        // 显示删除成功提示
+        Get.snackbar(
+          '删除成功',
+          '已删除该翻译记录',
+          snackPosition: SnackPosition.BOTTOM,
+          backgroundColor: Get.isDarkMode ? Colors.grey[800] : Colors.grey[200],
+          colorText: Get.isDarkMode ? Colors.white : Colors.black,
+          duration: const Duration(seconds: 2),
+        );
+      }
+    } catch (e) {
+      // 显示删除失败提示
+      Get.snackbar(
+        '删除失败',
+        '删除翻译记录时发生错误: ${e.toString()}',
+        snackPosition: SnackPosition.BOTTOM,
+        backgroundColor: Colors.red[400],
+        colorText: Colors.white,
+        duration: const Duration(seconds: 3),
+      );
+    }
+  }
+
   @override
   void onClose() {
     // 确保资源被正确释放
     historyController.translationController.stopAll();
     super.onClose();
   }
-} 
+}

lib/modules/translation/controllers/translation_history_controller.dart

@@ -1,3 +1,4 @@
+import 'package:flutter/material.dart';
 import 'package:get/get.dart';
 import 'package:intl/intl.dart';
 import '../controllers/translation_controller.dart';
@@ -139,4 +140,35 @@ class TranslationHistoryController extends GetxController {
   
   // 检查是否有历史记录
   bool get hasHistory => translationController.translationHistory.isNotEmpty;
-} 
+
+  // 删除指定会话的历史记录
+  Future<void> deleteSessionHistory(String sessionId) async {
+    try {
+      // 调用主控制器的删除方法
+      translationController.deleteSessionHistory(sessionId);
+
+      // 重新加载和分组历史数据
+      await loadHistoryData();
+
+      // 显示删除成功提示
+      Get.snackbar(
+        '删除成功',
+        '已删除该会话的所有翻译记录',
+        snackPosition: SnackPosition.BOTTOM,
+        backgroundColor: Get.isDarkMode ? Colors.grey[800] : Colors.grey[200],
+        colorText: Get.isDarkMode ? Colors.white : Colors.black,
+        duration: const Duration(seconds: 2),
+      );
+    } catch (e) {
+      // 显示删除失败提示
+      Get.snackbar(
+        '删除失败',
+        '删除会话记录时发生错误: ${e.toString()}',
+        snackPosition: SnackPosition.BOTTOM,
+        backgroundColor: Colors.red[400],
+        colorText: Colors.white,
+        duration: const Duration(seconds: 3),
+      );
+    }
+  }
+}

lib/modules/translation/views/translation_detail_view.dart

@@ -258,7 +258,7 @@ class TranslationDetailView extends GetView<TranslationDetailController> {
               ),
             ),
           ],
-          // 语言信息和播放按钮
+          // 语言信息和操作按钮
           const SizedBox(height: 4),
           Row(
             mainAxisAlignment: MainAxisAlignment.spaceBetween,
@@ -270,15 +270,39 @@ class TranslationDetailView extends GetView<TranslationDetailController> {
                   color: Theme.of(context).textTheme.bodySmall?.color,
                 ),
               ),
-              if (!item.isIntermediate)
+              Row(
-                GestureDetector(
+                mainAxisSize: MainAxisSize.min,
-                  onTap: () => controller.playTranslationItem(item),
+                children: [
-                  child: Icon(
+                  // 删除按钮
-                    Icons.volume_up,
+                  if (!item.isIntermediate)
-                    size: 20,
+                    InkWell(
-                    color: Theme.of(context).colorScheme.primary,
+                      onTap: () => _showDeleteItemConfirmDialog(item),
-                  ),
+                      borderRadius: BorderRadius.circular(6.r),
-                ),
+                      splashColor: Colors.red.withValues(alpha: 0.1),
+                      highlightColor: Colors.red.withValues(alpha: 0.05),
+                      child: Container(
+                        padding: EdgeInsets.all(6.w),
+                        child: Icon(
+                          Icons.delete_outline,
+                          size: 16.sp,
+                          color: isDarkMode ? Colors.grey[500] : Colors.grey[400],
+                        ),
+                      ),
+                    ),
+                  // 播放按钮
+                  if (!item.isIntermediate) ...[
+                    SizedBox(width: 8.w),
+                    GestureDetector(
+                      onTap: () => controller.playTranslationItem(item),
+                      child: Icon(
+                        Icons.volume_up,
+                        size: 20.sp,
+                        color: Theme.of(context).colorScheme.primary,
+                      ),
+                    ),
+                  ],
+                ],
+              ),
             ],
           ),
         ],
@@ -592,6 +616,102 @@ class TranslationDetailView extends GetView<TranslationDetailController> {
     );
   }
 
+  // 显示删除单条记录确认对话框
+  void _showDeleteItemConfirmDialog(TranslationItem item) {
+    final isDarkMode = Get.isDarkMode;
+
+    Get.dialog(
+      AlertDialog(
+        backgroundColor: isDarkMode ? AppColors.cardBackground : Colors.white,
+        title: Text(
+          '删除翻译记录',
+          style: TextStyle(
+            fontSize: 18.sp,
+            fontWeight: FontWeight.bold,
+            color: isDarkMode ? Colors.white : Colors.black,
+          ),
+        ),
+        content: Column(
+          mainAxisSize: MainAxisSize.min,
+          crossAxisAlignment: CrossAxisAlignment.start,
+          children: [
+            Text(
+              '确定要删除这条翻译记录吗？此操作无法撤销。',
+              style: TextStyle(
+                fontSize: 16.sp,
+                color: isDarkMode ? Colors.grey[300] : Colors.black87,
+              ),
+            ),
+            SizedBox(height: 12.h),
+            Container(
+              padding: EdgeInsets.all(12.w),
+              decoration: BoxDecoration(
+                color: isDarkMode ? Colors.grey[800] : Colors.grey[100],
+                borderRadius: BorderRadius.circular(8.r),
+              ),
+              child: Column(
+                crossAxisAlignment: CrossAxisAlignment.start,
+                children: [
+                  Text(
+                    item.sourceText,
+                    style: TextStyle(
+                      fontSize: 14.sp,
+                      color: isDarkMode ? Colors.grey[300] : Colors.black87,
+                    ),
+                    maxLines: 2,
+                    overflow: TextOverflow.ellipsis,
+                  ),
+                  if (item.translatedText.isNotEmpty) ...[
+                    SizedBox(height: 4.h),
+                    Text(
+                      item.translatedText,
+                      style: TextStyle(
+                        fontSize: 14.sp,
+                        color: isDarkMode ? Colors.grey[400] : Colors.black54,
+                      ),
+                      maxLines: 2,
+                      overflow: TextOverflow.ellipsis,
+                    ),
+                  ],
+                ],
+              ),
+            ),
+          ],
+        ),
+        actions: [
+          TextButton(
+            onPressed: () => Get.back(),
+            child: Text(
+              'cancel'.tr,
+              style: TextStyle(
+                fontSize: 16.sp,
+                color: isDarkMode ? Colors.grey[400] : Colors.grey[700],
+              ),
+            ),
+          ),
+          TextButton(
+            onPressed: () {
+              Get.back();
+              // 删除指定的翻译记录
+              controller.deleteTranslationItem(item);
+            },
+            child: Text(
+              'confirm'.tr,
+              style: TextStyle(
+                fontSize: 16.sp,
+                color: Colors.red,
+                fontWeight: FontWeight.bold,
+              ),
+            ),
+          ),
+        ],
+        shape: RoundedRectangleBorder(
+          borderRadius: BorderRadius.circular(12.r),
+        ),
+      ),
+    );
+  }
+
   // 分享内容方法
   void _shareContent() {
     String shareText = '';

lib/modules/translation/views/translation_history_view.dart

@@ -176,6 +176,22 @@ class TranslationHistoryView extends GetView<TranslationHistoryController> {
               ),
             ),
             SizedBox(width: 12.w),
+            // 删除会话按钮
+            InkWell(
+              onTap: () => _showDeleteSessionConfirmDialog(item.sessionId),
+              borderRadius: BorderRadius.circular(6.r),
+              splashColor: Colors.red.withOpacity(0.1),
+              highlightColor: Colors.red.withOpacity(0.05),
+              child: Container(
+                padding: EdgeInsets.all(8.w),
+                child: Icon(
+                  Icons.delete_outline,
+                  color: isDarkMode ? Colors.grey[500] : Colors.grey[400],
+                  size: 18.sp,
+                ),
+              ),
+            ),
+            SizedBox(width: 8.w),
             Icon(
               Icons.chevron_right,
               color: isDarkMode ? Colors.grey[600] : Colors.grey[350],
@@ -229,9 +245,65 @@ class TranslationHistoryView extends GetView<TranslationHistoryController> {
     return '$sourceName ⇄ $targetName';
   }
 
+  // 显示删除会话确认对话框
+  void _showDeleteSessionConfirmDialog(String sessionId) {
+    final isDarkMode = Get.isDarkMode;
+
+    Get.dialog(
+      AlertDialog(
+        backgroundColor: isDarkMode ? AppColors.cardBackground : Colors.white,
+        title: Text(
+          '删除会话记录',
+          style: TextStyle(
+            fontSize: 18.sp,
+            fontWeight: FontWeight.bold,
+            color: isDarkMode ? Colors.white : Colors.black,
+          ),
+        ),
+        content: Text(
+          '确定要删除该会话的所有翻译记录吗？此操作无法撤销。',
+          style: TextStyle(
+            fontSize: 16.sp,
+            color: isDarkMode ? Colors.grey[300] : Colors.black87,
+          ),
+        ),
+        actions: [
+          TextButton(
+            onPressed: () => Get.back(),
+            child: Text(
+              'cancel'.tr,
+              style: TextStyle(
+                fontSize: 16.sp,
+                color: isDarkMode ? Colors.grey[400] : Colors.grey[700],
+              ),
+            ),
+          ),
+          TextButton(
+            onPressed: () {
+              Get.back();
+              // 删除指定会话的历史记录
+              controller.deleteSessionHistory(sessionId);
+            },
+            child: Text(
+              'confirm'.tr,
+              style: TextStyle(
+                fontSize: 16.sp,
+                color: Colors.red,
+                fontWeight: FontWeight.bold,
+              ),
+            ),
+          ),
+        ],
+        shape: RoundedRectangleBorder(
+          borderRadius: BorderRadius.circular(12.r),
+        ),
+      ),
+    );
+  }
+
   void _showClearHistoryConfirmDialog() {
     final isDarkMode = Get.isDarkMode;
-    
+
     Get.dialog(
       AlertDialog(
         backgroundColor: isDarkMode ? AppColors.cardBackground : Colors.white,