fix(alarm): add due alarm watchdog

android/app/src/main/AndroidManifest.xml

@@ -24,6 +24,8 @@
             android:launchMode="singleTop"
             android:taskAffinity=""
             android:theme="@style/LaunchTheme"
+            android:showWhenLocked="true"
+            android:turnScreenOn="true"
             android:configChanges="orientation|keyboardHidden|keyboard|screenSize|smallestScreenSize|locale|layoutDirection|fontScale|screenLayout|density|uiMode"
             android:hardwareAccelerated="true"
             android:windowSoftInputMode="adjustResize">

android/app/src/main/kotlin/es/freetimelab/pluriwave/AlarmScheduler.kt

@@ -41,20 +41,24 @@ class AlarmScheduler(private val context: Context) {
         )
 
         if (preNoticeAtMillis > System.currentTimeMillis()) {
-            alarmManager.setExactAndAllowWhileIdle(
-                AlarmManager.RTC_WAKEUP,
-                preNoticeAtMillis,
-                PendingIntent.getBroadcast(
-                    context,
-                    requestCode(id, 3),
-                    Intent(context, PluriWaveAlarmReceiver::class.java).apply {
-                        action = PluriWaveAlarmReceiver.ACTION_PRE_NOTICE
-                        putExtra(PluriWaveAlarmReceiver.EXTRA_ALARM_ID, id)
-                        putExtra(PluriWaveAlarmReceiver.EXTRA_ALARM_TITLE, title)
-                    },
-                    PendingIntent.FLAG_UPDATE_CURRENT or PendingIntent.FLAG_IMMUTABLE
+            try {
+                alarmManager.setExactAndAllowWhileIdle(
+                    AlarmManager.RTC_WAKEUP,
+                    preNoticeAtMillis,
+                    PendingIntent.getBroadcast(
+                        context,
+                        requestCode(id, 3),
+                        Intent(context, PluriWaveAlarmReceiver::class.java).apply {
+                            action = PluriWaveAlarmReceiver.ACTION_PRE_NOTICE
+                            putExtra(PluriWaveAlarmReceiver.EXTRA_ALARM_ID, id)
+                            putExtra(PluriWaveAlarmReceiver.EXTRA_ALARM_TITLE, title)
+                        },
+                        PendingIntent.FLAG_UPDATE_CURRENT or PendingIntent.FLAG_IMMUTABLE
+                    )
                 )
-            )
+            } catch (_: SecurityException) {
+                // The main alarm is already scheduled with setAlarmClock.
+            }
         }
     }