Add Exit Dialog (#3487)

* Add exit dialog

* Fix a typo

* Show Dialog only when Map or Register is visible

* PR feedback changes

* Fix failing check

* Remove incorrect test

* Refactor dialog condition logic

---------

Co-authored-by: Benjamin Mwalimu <dubdabasoduba@gmail.com>

android/quest/src/main/java/org/smartregister/fhircore/quest/ui/main/AppMainActivity.kt

@@ -24,6 +24,7 @@ import android.os.Bundle
 import android.provider.Settings
 import android.view.View
 import android.widget.Toast
+import androidx.activity.OnBackPressedCallback
 import androidx.activity.result.ActivityResult
 import androidx.activity.result.ActivityResultLauncher
 import androidx.activity.result.contract.ActivityResultContracts
@@ -51,6 +52,8 @@ import org.smartregister.fhircore.engine.domain.model.LauncherType
 import org.smartregister.fhircore.engine.rulesengine.services.LocationCoordinate
 import org.smartregister.fhircore.engine.sync.OnSyncListener
 import org.smartregister.fhircore.engine.sync.SyncListenerManager
+import org.smartregister.fhircore.engine.ui.base.AlertDialogue
+import org.smartregister.fhircore.engine.ui.base.AlertIntent
 import org.smartregister.fhircore.engine.ui.base.BaseMultiLanguageActivity
 import org.smartregister.fhircore.engine.util.DispatcherProvider
 import org.smartregister.fhircore.engine.util.extension.parcelable
@@ -152,6 +155,7 @@ open class AppMainActivity : BaseMultiLanguageActivity(), QuestionnaireHandler,
       }
 
       setupLocationServices()
+      overrideOnBackPressListener()
 
       findViewById<View>(R.id.mainScreenProgressBar).apply { visibility = View.GONE }
       findViewById<View>(R.id.mainScreenProgressBarText).apply { visibility = View.GONE }
@@ -300,4 +304,26 @@ open class AppMainActivity : BaseMultiLanguageActivity(), QuestionnaireHandler,
       }
     }
   }
+
+  private fun overrideOnBackPressListener() {
+    onBackPressedDispatcher.addCallback(
+      object : OnBackPressedCallback(true) {
+        override fun handleOnBackPressed() {
+          val navHostFragment =
+            (supportFragmentManager.findFragmentById(R.id.nav_host) as NavHostFragment)
+          if (navHostFragment.childFragmentManager.backStackEntryCount == 0) {
+            AlertDialogue.showAlert(
+              this@AppMainActivity,
+              alertIntent = AlertIntent.CONFIRM,
+              title = getString(R.string.exit_app),
+              message = getString(R.string.exit_app_message),
+              cancellable = false,
+              confirmButtonListener = { finish() },
+              neutralButtonListener = { dialog -> dialog.dismiss() },
+            )
+          } else navHostFragment.navController.navigateUp()
+        }
+      },
+    )
+  }
 }

android/quest/src/main/res/values/strings.xml

@@ -133,4 +133,6 @@
     <string name="scan_qr_camera_instruction">Place your camera over the entire QR Code to start scanning</string>
     <string name="failed_to_get_gps_location">Failed to get GPS location</string>
     <string name="space_asterisk" translatable="false">\u0020\u002a</string>
+    <string name="exit_app">Exit App</string>
+    <string name="exit_app_message">Are you sure you want to exit from the app?</string>
 </resources>

android/quest/src/test/java/org/smartregister/fhircore/quest/ui/main/AppMainActivityTest.kt

@@ -37,7 +37,6 @@ import io.mockk.slot
 import io.mockk.spyk
 import java.io.Serializable
 import java.time.OffsetDateTime
-import kotlin.test.assertNotNull
 import kotlinx.coroutines.test.runTest
 import org.hl7.fhir.r4.model.QuestionnaireResponse
 import org.junit.Assert