增加了session会话的查询和删除功能

backend/database.py

@@ -954,6 +954,32 @@ class DatabaseManager:
             logger.error(f'获取会话总数失败: {e}')
             return 0
     
+    def delete_detection_session(self, session_id: str):
+        """删除检测会话及其相关的检测数据"""
+        conn = self.get_connection()
+        cursor = conn.cursor()
+        
+        try:
+            # 验证会话是否存在
+            cursor.execute('SELECT COUNT(*) FROM detection_sessions WHERE id = ?', (session_id,))
+            if cursor.fetchone()[0] == 0:
+                raise ValueError(f'检测会话不存在: {session_id}')
+            
+            # 先删除相关的检测数据
+            cursor.execute('DELETE FROM detection_data WHERE session_id = ?', (session_id,))
+            deleted_data_count = cursor.rowcount
+            
+            # 再删除检测会话
+            cursor.execute('DELETE FROM detection_sessions WHERE id = ?', (session_id,))
+            
+            conn.commit()
+            logger.info(f'删除检测会话: {session_id}, 同时删除了 {deleted_data_count} 条检测数据')
+            
+        except Exception as e:
+            conn.rollback()
+            logger.error(f'删除检测会话失败: {e}')
+            raise
+    
     def get_session_data(self, session_id: str) -> Optional[Dict]:
         """获取会话详细数据"""
         conn = self.get_connection()

backend/main.py

@@ -1212,11 +1212,20 @@ class AppServer:
             try:
                 page = int(flask_request.args.get('page', 1))
                 size = int(flask_request.args.get('size', 10))
-                patient_id = flask_request.args.get('patient_id')
+                patient_id = flask_request.args.get('patient_id')               
                 
                 sessions = self.db_manager.get_detection_sessions(page, size, patient_id)
                 total = self.db_manager.get_sessions_count(patient_id)
                 
+                # 为每个会话补充最新的检测数据
+                for session in sessions:
+                    session_id = session.get('id')
+                    if session_id:
+                        latest_data = self.db_manager.get_latest_detection_data(session_id, 5)
+                        session['latest_detection_data'] = latest_data
+                    else:
+                        session['latest_detection_data'] = []
+                
                 return jsonify({
                     'success': True,
                     'data': {
@@ -1300,6 +1309,23 @@ class AppServer:
                 self.logger.error(f'删除检测数据失败: {e}')
                 return jsonify({'success': False, 'error': str(e)}), 500
         
+        @self.app.route('/api/detection/sessions/<session_id>', methods=['DELETE'])
+        def delete_detection_session(session_id):
+            """删除检测会话及其相关的检测数据"""
+            try:
+                self.db_manager.delete_detection_session(session_id)
+                
+                return jsonify({
+                    'success': True,
+                    'message': '检测会话删除成功'
+                })
+                
+            except ValueError as e:
+                return jsonify({'success': False, 'error': str(e)}), 404
+            except Exception as e:
+                self.logger.error(f'删除检测会话失败: {e}')
+                return jsonify({'success': False, 'error': str(e)}), 500
+        
         # ==================== 错误处理 ====================
         
         @self.app.errorhandler(404)