Early dismissal of alarm

app/src/main/kotlin/com/simplemobiletools/clock/receivers/DismissAlarmReceiver.kt

@@ -0,0 +1,52 @@
+package com.simplemobiletools.clock.receivers
+
+import android.content.BroadcastReceiver
+import android.content.Context
+import android.content.Intent
+import com.simplemobiletools.clock.extensions.*
+import com.simplemobiletools.clock.helpers.ALARM_ID
+import com.simplemobiletools.clock.helpers.NOTIFICATION_ID
+import com.simplemobiletools.clock.models.Alarm
+import com.simplemobiletools.commons.helpers.ensureBackgroundThread
+import java.util.*
+
+class DismissAlarmReceiver: BroadcastReceiver() {
+    override fun onReceive(context: Context, intent: Intent) {
+        val alarmId = intent.getIntExtra(ALARM_ID, -1)
+        val notificationId = intent.getIntExtra(NOTIFICATION_ID, -1)
+        if (alarmId == -1) return
+
+        context.hideNotification(notificationId)
+
+        ensureBackgroundThread {
+            context.dbHelper.getAlarmWithId(alarmId)?.let { alarm ->
+                context.cancelAlarmClock(alarm)
+                scheduleNextAlarm(alarm, context)
+                if (alarm.days < 0) {
+                    context.dbHelper.updateAlarmEnabledState(alarm.id, false)
+                    context.updateWidgets()
+                }
+            }
+        }
+
+    }
+
+    private fun scheduleNextAlarm(alarm: Alarm, context: Context) {
+        val oldBitmask = alarm.days
+        alarm.days = removeTodayFromBitmask(oldBitmask)
+        context.scheduleNextAlarm(alarm, true)
+        alarm.days = oldBitmask
+    }
+
+    private fun removeTodayFromBitmask(bitmask: Int): Int {
+        val calendar = Calendar.getInstance()
+        var dayOfWeek = calendar.get(Calendar.DAY_OF_WEEK) - Calendar.MONDAY  // This will give values from 0 (Monday) to 6 (Sunday)
+
+        if (dayOfWeek < 0) {  // Adjust for Calendar.MONDAY being 2
+            dayOfWeek += 7
+        }
+
+        val todayBitmask = 1 shl dayOfWeek  // This will shift the number 1 to the left by dayOfWeek places, creating a bitmask for today
+        return bitmask and todayBitmask.inv()  // This will return a new bitmask without today included
+    }
+}