feat: added csv functionalities in soundmeter screen.

lib/l10n/app_en.arb

@@ -346,5 +346,7 @@
     "gyroscopeHighLimitHint" : "Please provide the maximum limit of lux value to be recorded (0 rad/s to 1000 rad/s)",
     "accelerometerConfigurations" : "Accelerometer Configurations",
     "accelerometerUpdatePeriodHint" : "Please provide time interval at which data will be updated",
-    "accelerometerHighLimitHint" : "Please provide the maximum limit of lux value to be recorded"
+    "accelerometerHighLimitHint" : "Please provide the maximum limit of lux value to be recorded",
+    "soundmeterSnackBarMessage" : "Unable to access sound sensor",
+    "dangerous" : "Dangerous"
 }

lib/l10n/app_localizations.dart

@@ -2175,6 +2175,18 @@ abstract class AppLocalizations {
   /// In en, this message translates to:
   /// **'Please provide the maximum limit of lux value to be recorded'**
   String get accelerometerHighLimitHint;
+
+  /// No description provided for @soundmeterSnackBarMessage.
+  ///
+  /// In en, this message translates to:
+  /// **'Unable to access sound sensor'**
+  String get soundmeterSnackBarMessage;
+
+  /// No description provided for @dangerous.
+  ///
+  /// In en, this message translates to:
+  /// **'Dangerous'**
+  String get dangerous;
 }
 
 class _AppLocalizationsDelegate

lib/l10n/app_localizations_en.dart

@@ -1084,6 +1084,7 @@ class AppLocalizationsEn extends AppLocalizations {
   @override
   String get fileDeleted => 'File deleted';
 
+  @override
   String get soundmeterConfig => 'Soundmeter Configurations';
 
   @override
@@ -1114,4 +1115,10 @@ class AppLocalizationsEn extends AppLocalizations {
   @override
   String get accelerometerHighLimitHint =>
       'Please provide the maximum limit of lux value to be recorded';
+
+  @override
+  String get soundmeterSnackBarMessage => 'Unable to access sound sensor';
+
+  @override
+  String get dangerous => 'Dangerous';
 }

lib/providers/luxmeter_state_provider.dart

@@ -28,7 +28,6 @@ class LuxMeterStateProvider extends ChangeNotifier {
   bool _sensorAvailable = false;
   bool _isRecording = false;
   List<List<dynamic>> _recordedData = [];
-  double _recordingStartTime = 0.0;
   bool get isRecording => _isRecording;
 
   LuxMeterConfigProvider? _configProvider;
@@ -112,13 +111,14 @@ class LuxMeterStateProvider extends ChangeNotifier {
     final time = _currentTime;
     if (lux != null) {
       if (_isRecording) {
-        final relativeTime = time - _recordingStartTime;
         final now = DateTime.now();
         final dateFormat = DateFormat('yyyy-MM-dd HH:mm:ss.SSS');
         _recordedData.add([
+          now.millisecondsSinceEpoch.toString(),
           dateFormat.format(now),
-          relativeTime.toStringAsFixed(2),
           lux.toStringAsFixed(2),
+          0,
+          0
         ]);
       }
 
@@ -146,8 +146,9 @@ class LuxMeterStateProvider extends ChangeNotifier {
 
   void startRecording() {
     _isRecording = true;
-    _recordingStartTime = _currentTime;
-    _recordedData = [];
+    _recordedData = [
+      ['Timestamp', 'DateTime', 'Readings', 'Latitude', 'Longitude']
+    ];
     notifyListeners();
   }
 

lib/providers/soundmeter_state_provider.dart

@@ -1,6 +1,7 @@
 import 'dart:async';
 import 'dart:math';
 import 'package:fl_chart/fl_chart.dart';
+import 'package:intl/intl.dart';
 import 'package:pslab/l10n/app_localizations.dart';
 import 'package:pslab/others/logger_service.dart';
 import 'package:flutter/foundation.dart';
@@ -18,13 +19,20 @@ class SoundMeterStateProvider extends ChangeNotifier {
   AudioJack? _audioJack;
   double _startTime = 0;
   double _currentTime = 0;
-  final int _maxLength = 50;
+  final int _chartMaxLength = 50;
   double _dbMin = 0;
   double _dbMax = 0;
   double _dbSum = 0;
   int _dataCount = 0;
+  bool _isRecording = false;
+  List<List<dynamic>> _recordedData = [];
+  bool get isRecording => _isRecording;
+
+  Function(String)? onSensorError;
+
+  void initializeSensors({Function(String)? onError}) async {
+    onSensorError = onError;
 
-  void initializeSensors() async {
     try {
       _audioJack = AudioJack();
       await _audioJack!.initialize();
@@ -50,9 +58,15 @@ class SoundMeterStateProvider extends ChangeNotifier {
       });
     } catch (e) {
       logger.e("${appLocalizations.soundMeterInitialError} $e");
+      _handleSensorError(e);
     }
   }
 
+  void _handleSensorError(dynamic error) {
+    onSensorError?.call(appLocalizations.soundmeterSnackBarMessage);
+    logger.e("${appLocalizations.soundMeterInitialError} $error");
+  }
+
   double _calculateDecibels(List<double> audioData) {
     if (audioData.isEmpty) return 0.0;
 
@@ -87,11 +101,22 @@ class SoundMeterStateProvider extends ChangeNotifier {
   void _updateData() {
     final db = _currentDb;
     final time = _currentTime;
+    if (_isRecording) {
+      final now = DateTime.now();
+      final dateFormat = DateFormat('yyyy-MM-dd HH:mm:ss.SSS');
+      _recordedData.add([
+        now.millisecondsSinceEpoch.toString(),
+        dateFormat.format(now),
+        db.toStringAsFixed(2),
+        0,
+        0
+      ]);
+    }
     _dbData.add(db);
     _timeData.add(time);
     _dbSum += db;
     _dataCount++;
-    if (_dbData.length > _maxLength) {
+    if (_dbData.length > _chartMaxLength) {
       final removedValue = _dbData.removeAt(0);
       _timeData.removeAt(0);
       _dbSum -= removedValue;
@@ -108,6 +133,20 @@ class SoundMeterStateProvider extends ChangeNotifier {
     notifyListeners();
   }
 
+  void startRecording() {
+    _isRecording = true;
+    _recordedData = [
+      ['Timestamp', 'DateTime', 'Readings', 'Latitude', 'Longitude']
+    ];
+    notifyListeners();
+  }
+
+  List<List<dynamic>> stopRecording() {
+    _isRecording = false;
+    notifyListeners();
+    return _recordedData;
+  }
+
   double getCurrentDb() => _currentDb;
   double getMinDb() => _dbMin;
   double getMaxDb() => _dbMax;

lib/view/logged_data_chart_screen.dart

@@ -20,7 +20,7 @@ class LoggedDataChartScreen extends StatefulWidget {
     required this.fileName,
     this.xAxisLabel = 'Time (s)',
     this.yAxisLabel = 'Value',
-    this.xDataColumnIndex = 1,
+    this.xDataColumnIndex = 0,
     this.yDataColumnIndex = 2,
   });
 
@@ -105,18 +105,7 @@ class _LoggedDataChartScreenState extends State<LoggedDataChartScreen> {
               sideTitles: SideTitles(
                 showTitles: true,
                 reservedSize: reservedSizeBottom,
-                getTitlesWidget: (value, meta) {
-                  return SideTitleWidget(
-                    meta: meta,
-                    child: Text(
-                      value.toStringAsFixed(1),
-                      style: TextStyle(
-                        color: blackTextColor,
-                        fontSize: chartFontSize,
-                      ),
-                    ),
-                  );
-                },
+                getTitlesWidget: _sideTitleWidgets,
                 interval: timeInterval,
               ),
             ),
@@ -195,6 +184,7 @@ class _LoggedDataChartScreenState extends State<LoggedDataChartScreen> {
     double maxY = 0;
     double maxX = 0;
     double minX = 0;
+    double? startTime;
 
     for (int i = 1; i < widget.data.length; i++) {
       final row = widget.data[i];
@@ -204,10 +194,16 @@ class _LoggedDataChartScreenState extends State<LoggedDataChartScreen> {
         final yValue = _parseDouble(row[widget.yDataColumnIndex]);
 
         if (xValue != null && yValue != null) {
-          spots.add(FlSpot(xValue, yValue));
+          if (startTime == null) {
+            startTime = xValue;
+            minX = 0;
+          }
+
+          final relativeTime = ((xValue - startTime) / 1000.0);
+
+          spots.add(FlSpot(relativeTime, yValue));
           if (yValue > maxY) maxY = yValue;
-          if (xValue > maxX) maxX = xValue;
-          if (spots.length == 1 || xValue < minX) minX = xValue;
+          if (relativeTime > maxX) maxX = relativeTime;
         }
       }
     }
@@ -252,4 +248,39 @@ class _LoggedDataChartScreenState extends State<LoggedDataChartScreen> {
       ),
     );
   }
+
+  Widget _sideTitleWidgets(double value, TitleMeta meta) {
+    final screenWidth = MediaQuery.of(context).size.width;
+    final fontSize = screenWidth < 400
+        ? 7.0
+        : screenWidth < 600
+            ? 8.0
+            : 9.0;
+    final style = TextStyle(
+      color: blackTextColor,
+      fontSize: fontSize,
+    );
+
+    String timeText;
+    if (value < 60) {
+      timeText = '${value.toInt()}s';
+    } else if (value < 3600) {
+      int minutes = (value / 60).floor();
+      int seconds = (value % 60).toInt();
+      timeText = '${minutes}m${seconds}s';
+    } else {
+      int hours = (value / 3600).floor();
+      int minutes = ((value % 3600) / 60).floor();
+      timeText = '${hours}h${minutes}m';
+    }
+
+    return SideTitleWidget(
+      meta: meta,
+      child: Text(
+        maxLines: 1,
+        timeText,
+        style: style,
+      ),
+    );
+  }
 }

lib/view/logged_data_screen.dart

@@ -112,14 +112,14 @@ class _LoggedDataScreenState extends State<LoggedDataScreen> {
         return {
           'xAxisLabel': appLocalizations.timeAxisLabel,
           'yAxisLabel': appLocalizations.lx,
-          'xDataColumnIndex': 1,
+          'xDataColumnIndex': 0,
           'yDataColumnIndex': 2,
         };
       case 'soundmeter':
         return {
           'xAxisLabel': appLocalizations.timeAxisLabel,
           'yAxisLabel': appLocalizations.db,
-          'xDataColumnIndex': 1,
+          'xDataColumnIndex': 0,
           'yDataColumnIndex': 2,
         };
       case 'barometer':