Experimental location tracking for every 10 or 5 minutes

lib/managers/location_manager.class.dart

@@ -14,7 +14,7 @@ class LocationManager {
   }
 
   final int defaultUpdateIntervalMinutes = 20;
-  final String backgroundTaskId = "haclocationtask4352";
+  final String backgroundTaskId = "haclocationtask0";
   final String backgroundTaskTag = "haclocation";
   Duration _updateInterval;
   bool _isRunning;
@@ -57,29 +57,50 @@ class LocationManager {
   }
 
   _startLocationService() async {
-    Logger.d("Scheduling location update for every ${_updateInterval
-        .inMinutes} minutes...");
     String webhookId = ConnectionManager().webhookId;
     String httpWebHost = ConnectionManager().httpWebHost;
     if (webhookId != null && webhookId.isNotEmpty) {
+      Duration interval;
+      int delayFactor;
+      int taskCount;
+      Logger.d("Starting location update for every ${_updateInterval
+        .inMinutes} minutes...");
+      if (_updateInterval.inMinutes == 10) {
+        interval = Duration(minutes: 20);
+        taskCount = 2;
+        delayFactor = 10;
+      } else if (_updateInterval.inMinutes == 5) {
+        interval = Duration(minutes: 15);
+        taskCount = 3;
+        delayFactor = 5;
+      } else {
+        interval = _updateInterval;
+        taskCount = 1;
+        delayFactor = 0;
+      }
+      for (int i = 1; i <= taskCount; i++) {
+        int delay = i*delayFactor;
+        Logger.d("Scheduling location update task #$i for every ${interval.inMinutes} minutes in $delay minutes...");
         await workManager.Workmanager.registerPeriodicTask(
-        backgroundTaskId,
+          "$backgroundTaskId$n",
           "haClientLocationTracking",
           tag: backgroundTaskTag,
           inputData: {
             "webhookId": webhookId,
             "httpWebHost": httpWebHost
           },
-        frequency: _updateInterval,
+          frequency: interval,
+          initialDelay: Duration(minutes: delay),
           existingWorkPolicy: workManager.ExistingWorkPolicy.keep,
           backoffPolicy: workManager.BackoffPolicy.linear,
-        backoffPolicyDelay: _updateInterval,
+          backoffPolicyDelay: interval,
           constraints: workManager.Constraints(
             networkType: workManager.NetworkType.connected
           )
         );
       }
     }
+  }
 
   _stopLocationService() async {
     Logger.d("Canceling previous schedule if any...");

lib/pages/integration_settings.page.dart

@@ -29,6 +29,9 @@ class _IntegrationSettingsPageState extends State<IntegrationSettingsPage> {
       setState(() {
         _locationTrackingEnabled = prefs.getBool("location-enabled") ?? false;
         _locationInterval = prefs.getInt("location-interval") ?? LocationManager().defaultUpdateIntervalMinutes;
+        if (_locationInterval % 5 != 0) {
+          _locationInterval = 5 * (_locationInterval ~/ 5);
+        }
       });
     });
   }
@@ -36,15 +39,15 @@ class _IntegrationSettingsPageState extends State<IntegrationSettingsPage> {
   void incLocationInterval() {
     if (_locationInterval < 720) {
       setState(() {
-        _locationInterval = _locationInterval + 1;
+        _locationInterval = _locationInterval + 5;
       });
     }
   }
 
   void decLocationInterval() {
-    if (_locationInterval > 15) {
+    if (_locationInterval > 5) {
       setState(() {
-        _locationInterval = _locationInterval - 1;
+        _locationInterval = _locationInterval - 5;
       });
     }
   }