准备更新temp_avg相关字段能力

lib/services/battery_data_service.dart

@@ -87,25 +87,39 @@ class BatteryDataService {
             continue;
           }
 
-          // 提取电压极值
+          // 提取电压极值与平均温度
           final voltReg = RegExp(r'vbat=(\d+)');
+          final tempReg = RegExp(r'tbat=(\d+)');
           double? maxVolt, minVolt;
+          double tempSum = 0;
+          int tempCount = 0;
+
           for (String line in lines) {
             if (!line.contains('tbat=')) continue;
-            final match = voltReg.firstMatch(line);
-            if (match != null) {
-              final v = int.parse(match.group(1)!) / 1000000;
+
+            final vMatch = voltReg.firstMatch(line);
+            if (vMatch != null) {
+              final v = int.parse(vMatch.group(1)!) / 1000000;
               if (maxVolt == null || v > maxVolt) maxVolt = v;
               if (minVolt == null || v < minVolt) minVolt = v;
             }
+
+            final tMatch = tempReg.firstMatch(line);
+            if (tMatch != null) {
+              tempSum += double.parse(tMatch.group(1)!);
+              tempCount++;
+            }
           }
           if (maxVolt == null || minVolt == null) continue;
 
+          final tempAvg = tempCount > 0 ? tempSum / tempCount : 0.0;
+
           await _dbService.insertOrUpdate(
             dateStr,
             validatedCap,
             maxVolt,
             minVolt,
+            tempAvg: tempAvg, // 🆕
           );
           dev.log(
             '🔵 插入数据库: $dateStr, cap=$validatedCap',

lib/services/database_service.dart

@@ -6,22 +6,21 @@ import 'package:path/path.dart';
 class DatabaseService {
   static Database? _database;
   static const String _tableName = 'battery_data';
+  static const int _dbVersion = 2; // 🆕 1.7.1 加入 temp_avg
 
-  /// 获取数据库实例（单例）
   Future<Database> get database async {
     if (_database != null) return _database!;
     _database = await _initDatabase();
     return _database!;
   }
 
-  /// 初始化数据库
   Future<Database> _initDatabase() async {
     final dbPath = await getDatabasesPath();
     final path = join(dbPath, 'battery_health.db');
 
     return await openDatabase(
       path,
-      version: 1,
+      version: _dbVersion,
       onCreate: (db, version) async {
         await db.execute('''
           CREATE TABLE $_tableName (
@@ -29,6 +28,7 @@ class DatabaseService {
             capacity INTEGER NOT NULL,
             volt_max REAL NOT NULL,
             volt_min REAL NOT NULL,
+            temp_avg REAL NOT NULL DEFAULT 0,
             updated_at TEXT NOT NULL
           )
         ''');
@@ -37,6 +37,15 @@ class DatabaseService {
         ''');
         dev.log('✅ 数据库表创建成功', name: 'DatabaseService');
       },
+      onUpgrade: (db, oldVersion, newVersion) async {
+        // 🆕 1.7.1 v1 -> v2：添加 temp_avg 字段
+        if (oldVersion < 2) {
+          await db.execute(
+            'ALTER TABLE $_tableName ADD COLUMN temp_avg REAL NOT NULL DEFAULT 0',
+          );
+          dev.log('✅ 数据库升级 v1->v2：已添加 temp_avg 字段', name: 'DatabaseService');
+        }
+      },
     );
   }
 
@@ -45,8 +54,9 @@ class DatabaseService {
     String date,
     int capacity,
     double voltMax,
-    double voltMin,
-  ) async {
+    double voltMin, {
+    double tempAvg = 0, // 🆕
+  }) async {
     final db = await database;
     final now = DateTime.now().toIso8601String();
 
@@ -55,9 +65,13 @@ class DatabaseService {
       'capacity': capacity,
       'volt_max': voltMax,
       'volt_min': voltMin,
+      'temp_avg': tempAvg,
       'updated_at': now,
     }, conflictAlgorithm: ConflictAlgorithm.replace);
-    dev.log('📝 数据已保存: $date, cap=$capacity', name: 'DatabaseService');
+    dev.log(
+      '📝 数据已保存: $date, cap=$capacity, tempAvg=${tempAvg.toStringAsFixed(1)}',
+      name: 'DatabaseService',
+    );
   }
 
   /// 查询最近 N 条数据（按日期倒序）