fix: 更改SN格式

lib/repositories/mock/monitoring_mock_data.dart

@@ -11,28 +11,28 @@ class MonitoringMockData {
   static List<MonitoringMetricBO> getMockMetrics() {
     return const [
       MonitoringMetricBO(
-        value: '24.5',
+        value: '--',
         unit: '℃',
         label: '舱内温度',
         borderColorValue: 0xFF00FF9D,
         backgroundColorValue: 0x1A00FF9D,
       ),
       MonitoringMetricBO(
-        value: '63',
+        value: '--',
         unit: 'RH',
         label: '舱内湿度',
         borderColorValue: 0xFF00B8FF,
         backgroundColorValue: 0x1A00B8FF,
       ),
       MonitoringMetricBO(
-        value: '21',
+        value: '--',
         unit: '%',
         label: '氧气浓度',
         borderColorValue: 0xFF00FF9D,
         backgroundColorValue: 0x1A00FF9D,
       ),
       MonitoringMetricBO(
-        value: '0.5',
+        value: '--',
         unit: '%',
         label: '二氧化碳',
         borderColorValue: 0xFFFF7D00,

lib/utils/bluetooth/mcu_report.dart

@@ -366,6 +366,7 @@ class McuReportParser {
     String hex2() => remainingPayloadBytes() >= 2 ? payload!.readHex(2) : '';
     String ascii(int bytes) =>
         remainingPayloadBytes() >= bytes ? payload!.readAscii(bytes) : '';
+    String snAscii(int bytes) => _normalizeSn(ascii(bytes));
 
     return McuReport(
       head: head,
@@ -432,7 +433,7 @@ class McuReportParser {
       pulseRate: highByte(),
       xyyStatus: highByte(),
       xyyError1: highByte(),
-      sn: ascii(10),
+      sn: snAscii(10),
       topTempCorrect: highByte(),
       midTempCorrect: highByte(),
       o2OpenCorrectStart: highByte(),
@@ -447,6 +448,22 @@ class McuReportParser {
     return parseHex(_bytesToHex(bytes));
   }
 
+  static String _normalizeSn(String value) {
+    if (value.isEmpty) return value;
+
+    final buffer = StringBuffer();
+    for (var index = 0; index < value.length; index += 2) {
+      if (index + 1 < value.length) {
+        buffer
+          ..write(value[index + 1])
+          ..write(value[index]);
+      } else {
+        buffer.write(value[index]);
+      }
+    }
+    return buffer.toString();
+  }
+
   static String _bytesToHex(List<int> bytes) {
     return bytes
         .map((item) => item.toRadixString(16).padLeft(2, '0'))

lib/views/monitoring/index/cubit/monitoring_index_cubit.dart

@@ -134,8 +134,10 @@ class MonitoringIndexCubit extends Cubit<MonitoringIndexState> {
             'co2Set=${latestReport.co2Setting} '
             'sn=${latestReport.sn.isEmpty ? '<EMPTY>' : latestReport.sn}',
           );
-          final bluetoothReadInfo =
-              BluetoothReadModel.fromMcuReport(latestReport);
+          final reportSn = _appendBluetoothSideToSn(latestReport.sn);
+          final bluetoothReadInfo = BluetoothReadModel.fromMcuReport(
+            latestReport,
+          ).copyWith(sn: reportSn.isEmpty ? null : reportSn);
           if (bluetoothReadInfo.hasSn) {
             await _storageService.saveBluetoothReadSn(bluetoothReadInfo.sn!);
             await _connectMqttForDeviceSn(bluetoothReadInfo.sn!);
@@ -175,6 +177,19 @@ class MonitoringIndexCubit extends Cubit<MonitoringIndexState> {
     });
   }
 
+  String _appendBluetoothSideToSn(String sn) {
+    final cleanSn = sn.trim();
+    if (cleanSn.isEmpty) return '';
+
+    final deviceName = state.boundBluetoothDeviceName?.trim();
+    if (deviceName == null || deviceName.isEmpty) return cleanSn;
+
+    final side = deviceName[deviceName.length - 1].toUpperCase();
+    if (side != 'L' && side != 'R') return cleanSn;
+
+    return cleanSn.toUpperCase().endsWith(side) ? cleanSn : '$cleanSn$side';
+  }
+
   Future<void> _loadBoundBluetoothDevice() async {
     final boundDevice = await _storageService.getBoundBluetoothDevice();
     if (isClosed) return;
@@ -192,7 +207,16 @@ class MonitoringIndexCubit extends Cubit<MonitoringIndexState> {
       boundBluetoothDeviceName: boundDevice['deviceName'],
     ));
     if (bluetoothReadInfo.hasSn) {
-      _connectMqttForDeviceSn(bluetoothReadInfo.sn!);
+      final sn = _appendBluetoothSideToSn(bluetoothReadInfo.sn!);
+      if (sn.isNotEmpty) {
+        if (sn != bluetoothReadInfo.sn) {
+          await _storageService.saveBluetoothReadSn(sn);
+          eventBus.emit(
+            BluetoothReadInfoChangedEvent(bluetoothReadInfo.copyWith(sn: sn)),
+          );
+        }
+        _connectMqttForDeviceSn(sn);
+      }
     }
     if (deviceId != null && deviceId.isNotEmpty) {
       _isAutoReconnectEnabled = true;