fixed battery issue

app/src/main/java/in/sminnovations/attendanceapp/main/MainAppActivity.kt

@@ -1,5 +1,8 @@
 package `in`.sminnovations.attendanceapp.main
 
+import android.content.Intent
+import android.content.IntentFilter
+import android.os.BatteryManager
 import android.os.Bundle
 import android.view.WindowManager
 import androidx.activity.ComponentActivity
@@ -12,7 +15,11 @@ import `in`.sminnovations.attendanceapp.ui.theme.SMIAttendanceTheme
 class MainAppActivity : ComponentActivity() {
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
-        window.addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON)
+        if (shouldKeepScreenOn()) {
+            window.addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON)
+        } else {
+            window.clearFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON)
+        }
         enableEdgeToEdge()
         setContent {
             SMIAttendanceTheme {
@@ -20,4 +27,16 @@ class MainAppActivity : ComponentActivity() {
             }
         }
     }
-}
+
+    private fun shouldKeepScreenOn(): Boolean {
+        val batteryStatus = registerReceiver(
+            null,
+            IntentFilter(Intent.ACTION_BATTERY_CHANGED)
+        ) ?: return false
+        val level = batteryStatus.getIntExtra(BatteryManager.EXTRA_LEVEL, -1)
+        val scale = batteryStatus.getIntExtra(BatteryManager.EXTRA_SCALE, -1)
+        val isCharging = batteryStatus.getIntExtra(BatteryManager.EXTRA_PLUGGED, -1) > 0
+        val batteryPct = level * 100 / scale
+        return batteryPct > 50 || isCharging
+    }
+}