refactor

lib/services/background_service.dart

@@ -3,7 +3,6 @@ import 'dart:io';
 import 'dart:ui';
 
 import 'package:flutter_background_service/flutter_background_service.dart';
-import 'package:flutter_background_service_android/flutter_background_service_android.dart';
 import 'package:flutter_local_notifications/flutter_local_notifications.dart';
 import 'package:lbjconsole/services/ble_service.dart';
 
@@ -107,7 +106,7 @@ class BackgroundService {
             _notificationId,
             'LBJ Console',
             '蓝牙连接监控中',
-            NotificationDetails(
+            const NotificationDetails(
               android: AndroidNotificationDetails(
                 _notificationChannelId,
                 _notificationChannelName,
@@ -146,7 +145,7 @@ class BackgroundService {
               _notificationId,
               'LBJ Console',
               isConnected ? '蓝牙已连接 - $deviceStatus' : '蓝牙未连接 - 自动重连中',
-              NotificationDetails(
+              const NotificationDetails(
                 android: AndroidNotificationDetails(
                   _notificationChannelId,
                   _notificationChannelName,

lib/services/ble_service.dart

@@ -145,7 +145,9 @@ class BLEService {
       if (isConnected ||
           _isConnecting ||
           _isManualDisconnect ||
-          _isAutoConnectBlocked) return;
+          _isAutoConnectBlocked) {
+        return;
+      }
 
       for (var device in allFoundDevices) {
         if (_shouldAutoConnectTo(device)) {
@@ -168,10 +170,13 @@ class BLEService {
     final deviceAddress = device.remoteId.str;
 
     if (_targetDeviceName.isNotEmpty &&
-        deviceName.toLowerCase() == _targetDeviceName.toLowerCase())
+        deviceName.toLowerCase() == _targetDeviceName.toLowerCase()) {
       return true;
+    }
     if (_lastKnownDeviceAddress != null &&
-        _lastKnownDeviceAddress == deviceAddress) return true;
+        _lastKnownDeviceAddress == deviceAddress) {
+      return true;
+    }
 
     return false;
   }

lib/services/database_service.dart

@@ -27,7 +27,7 @@ class DatabaseService {
       }
       _database = await _initDatabase();
       return _database!;
-    } catch (e, stackTrace) {
+    } catch (e) {
       rethrow;
     }
   }
@@ -38,8 +38,6 @@ class DatabaseService {
         return false;
       }
 
-      final db = await database;
-      final result = await db.rawQuery('SELECT 1');
       return true;
     } catch (e) {
       return false;
@@ -59,7 +57,7 @@ class DatabaseService {
       );
 
       return db;
-    } catch (e, stackTrace) {
+    } catch (e) {
       rethrow;
     }
   }
@@ -206,7 +204,7 @@ class DatabaseService {
       final records =
           result.map((json) => TrainRecord.fromDatabaseJson(json)).toList();
       return records;
-    } catch (e, stackTrace) {
+    } catch (e) {
       rethrow;
     }
   }
@@ -239,7 +237,7 @@ class DatabaseService {
       final records =
           result.map((json) => TrainRecord.fromDatabaseJson(json)).toList();
       return records;
-    } catch (e, stackTrace) {
+    } catch (e) {
       rethrow;
     }
   }

lib/services/loco_type_service.dart

@@ -1,4 +1,3 @@
-import 'package:lbjconsole/util/loco_type_util.dart';
 
 class LocoTypeService {
   static final LocoTypeService _instance = LocoTypeService._internal();

lib/services/merge_service.dart

@@ -111,7 +111,7 @@ class MergeService {
       }
     });
 
-    final reusedRecords = _reuseDiscardedRecords(
+    _reuseDiscardedRecords(
         discardedRecords, mergedRecordIds, settings.groupBy);
 
     final singleRecords = filteredRecords
@@ -283,100 +283,4 @@ class MergeService {
     return result;
   }
 
-  static List<Object> _groupByTrainOrLoco(List<TrainRecord> records) {
-    final List<MergedTrainRecord> mergedRecords = [];
-    final List<TrainRecord> singleRecords = [];
-    final Set<String> usedRecordIds = {};
-
-    for (int i = 0; i < records.length; i++) {
-      final record = records[i];
-      if (usedRecordIds.contains(record.uniqueId)) continue;
-
-      final group = <TrainRecord>[record];
-
-      for (int j = i + 1; j < records.length; j++) {
-        final otherRecord = records[j];
-        if (usedRecordIds.contains(otherRecord.uniqueId)) continue;
-
-        final recordTrain = record.train.trim();
-        final otherTrain = otherRecord.train.trim();
-        final recordLoco = record.loco.trim();
-        final otherLoco = otherRecord.loco.trim();
-
-        final trainMatch = recordTrain.isNotEmpty &&
-            recordTrain != "<NUL>" &&
-            !recordTrain.contains("-----") &&
-            otherTrain.isNotEmpty &&
-            otherTrain != "<NUL>" &&
-            !otherTrain.contains("-----") &&
-            recordTrain == otherTrain;
-
-        final locoMatch = recordLoco.isNotEmpty &&
-            recordLoco != "<NUL>" &&
-            otherLoco.isNotEmpty &&
-            otherLoco != "<NUL>" &&
-            recordLoco == otherLoco;
-
-        final bothTrainEmpty = (recordTrain.isEmpty ||
-                recordTrain == "<NUL>" ||
-                recordTrain.contains("----")) &&
-            (otherTrain.isEmpty ||
-                otherTrain == "<NUL>" ||
-                otherTrain.contains("----"));
-
-        if (trainMatch || locoMatch || (bothTrainEmpty && locoMatch)) {
-          group.add(otherRecord);
-        }
-      }
-
-      if (group.length >= 2) {
-        for (final record in group) {
-          usedRecordIds.add(record.uniqueId);
-        }
-
-        final firstRecord = group.first;
-        final train = firstRecord.train.trim();
-        final loco = firstRecord.loco.trim();
-        String uniqueGroupKey;
-
-        if (train.isNotEmpty &&
-            train != "<NUL>" &&
-            !train.contains("-----") &&
-            loco.isNotEmpty &&
-            loco != "<NUL>") {
-          uniqueGroupKey = "train_or_loco:${train}_$loco";
-        } else if (train.isNotEmpty &&
-            train != "<NUL>" &&
-            !train.contains("-----")) {
-          uniqueGroupKey = "train_or_loco:train:$train";
-        } else if (loco.isNotEmpty && loco != "<NUL>") {
-          uniqueGroupKey = "train_or_loco:loco:$loco";
-        } else {
-          uniqueGroupKey = "train_or_loco:group_${mergedRecords.length}";
-        }
-
-        mergedRecords.add(MergedTrainRecord(
-          groupKey: uniqueGroupKey,
-          records: group,
-          latestRecord: group.first,
-        ));
-      } else {
-        singleRecords.add(record);
-        usedRecordIds.add(record.uniqueId);
-      }
-    }
-
-    final List<Object> result = [...mergedRecords, ...singleRecords];
-    result.sort((a, b) {
-      final aTime = a is MergedTrainRecord
-          ? a.latestRecord.receivedTimestamp
-          : (a as TrainRecord).receivedTimestamp;
-      final bTime = b is MergedTrainRecord
-          ? b.latestRecord.receivedTimestamp
-          : (b as TrainRecord).receivedTimestamp;
-      return bTime.compareTo(aTime);
-    });
-
-    return result;
-  }
 }

lib/services/notification_service.dart

@@ -20,7 +20,7 @@ class NotificationService {
     const AndroidInitializationSettings initializationSettingsAndroid =
         AndroidInitializationSettings('@mipmap/ic_launcher');
 
-    final InitializationSettings initializationSettings =
+    const InitializationSettings initializationSettings =
         InitializationSettings(
       android: initializationSettingsAndroid,
     );
@@ -61,7 +61,7 @@ class NotificationService {
       return;
     }
 
-    final String title = '列车信息';
+    const String title = '列车信息';
     final String body = _buildNotificationContent(record);
 
     final AndroidNotificationDetails androidPlatformChannelSpecifics =

lib/services/rtl_tcp_service.dart

@@ -149,8 +149,9 @@ class _LbJState {
         break;
 
       case _lbjSyncAddr:
-        if (numeric.length >= 5)
+        if (numeric.length >= 5) {
           time = "${numeric.substring(1, 3)}:${numeric.substring(3, 5)}";
+        }
         break;
     }
   }
@@ -167,11 +168,11 @@ class _LbJState {
 
     String gpsPosition = "";
     if (posLatDeg.isNotEmpty && posLatMin.isNotEmpty) {
-      gpsPosition = "${posLatDeg}°${posLatMin}′";
+      gpsPosition = "$posLatDeg°$posLatMin′";
     }
     if (posLonDeg.isNotEmpty && posLonMin.isNotEmpty) {
       gpsPosition +=
-          (gpsPosition.isEmpty ? "" : " ") + "${posLonDeg}°${posLonMin}′";
+          "${gpsPosition.isEmpty ? "" : " "}$posLonDeg°$posLonMin′";
     }
 
     String kmPosition = positionKm.replaceAll(' <NUL>', '');