From 995951f18c3562cd22a486d5f58e7975bb174100 Mon Sep 17 00:00:00 2001
From: Sandeep Raghuraman <sandy.8925@gmail.com>
Date: Thu, 25 Mar 2021 20:15:42 +0530
Subject: [PATCH] When Bluetooth is disabled by the user, finish
 DeviceServiceExploreActivity and CharacteristicActivity

---
 .../blexplorer/ui/CharacteristicActivity.kt   |  4 +++
 .../ui/DeviceServiceExploreActivity.kt        |  5 +++-
 .../java/org/ligi/blexplorer/ui/UIUtils.kt    | 28 +++++++++++++++++++
 3 files changed, 36 insertions(+), 1 deletion(-)
 create mode 100644 android/src/main/java/org/ligi/blexplorer/ui/UIUtils.kt

diff --git a/android/src/main/java/org/ligi/blexplorer/ui/CharacteristicActivity.kt b/android/src/main/java/org/ligi/blexplorer/ui/CharacteristicActivity.kt
index d8eb9d6..9610e4c 100644
--- a/android/src/main/java/org/ligi/blexplorer/ui/CharacteristicActivity.kt
+++ b/android/src/main/java/org/ligi/blexplorer/ui/CharacteristicActivity.kt
@@ -91,6 +91,10 @@ class CharacteristicActivity : AppCompatActivity() {
                     finish()
                 }
                 )
+
+        supportFragmentManager.beginTransaction()
+                .add(ExitActivityOnBluetoothDisable(), null)
+                .commit()
     }
 
     override fun onOptionsItemSelected(item: MenuItem): Boolean {
diff --git a/android/src/main/java/org/ligi/blexplorer/ui/DeviceServiceExploreActivity.kt b/android/src/main/java/org/ligi/blexplorer/ui/DeviceServiceExploreActivity.kt
index dd3f0d8..ac7621b 100644
--- a/android/src/main/java/org/ligi/blexplorer/ui/DeviceServiceExploreActivity.kt
+++ b/android/src/main/java/org/ligi/blexplorer/ui/DeviceServiceExploreActivity.kt
@@ -28,7 +28,6 @@ import org.ligi.blexplorer.R
 import org.ligi.blexplorer.bluetoothController
 import org.ligi.blexplorer.databinding.ActivityWithRecyclerBinding
 import org.ligi.blexplorer.databinding.ItemServiceBinding
-import org.ligi.blexplorer.ui.CharacteristicActivity
 import org.ligi.blexplorer.util.DevicePropertiesDescriber
 import org.ligi.blexplorer.util.KEY_BLUETOOTH_DEVICE
 import org.ligi.snackengage.SnackEngage
@@ -101,6 +100,10 @@ class DeviceServiceExploreActivity : AppCompatActivity() {
                             supportFragmentManager.beginTransaction().add(ExitOnDismissAlertDialog(rxbleDevice), ExitOnDismissAlertDialog.TAG).commit()
                         }
                 )
+
+        supportFragmentManager.beginTransaction()
+                .add(ExitActivityOnBluetoothDisable(), null)
+                .commit()
     }
 
     override fun onOptionsItemSelected(item: MenuItem) = when (item.itemId) {
diff --git a/android/src/main/java/org/ligi/blexplorer/ui/UIUtils.kt b/android/src/main/java/org/ligi/blexplorer/ui/UIUtils.kt
new file mode 100644
index 0000000..cdc95c0
--- /dev/null
+++ b/android/src/main/java/org/ligi/blexplorer/ui/UIUtils.kt
@@ -0,0 +1,28 @@
+package org.ligi.blexplorer.ui
+
+import android.os.Bundle
+import androidx.fragment.app.Fragment
+import androidx.lifecycle.Lifecycle
+import com.polidea.rxandroidble2.RxBleClient
+import com.uber.autodispose.AutoDispose
+import com.uber.autodispose.android.lifecycle.AndroidLifecycleScopeProvider
+import io.reactivex.BackpressureStrategy
+import io.reactivex.android.schedulers.AndroidSchedulers
+import org.ligi.blexplorer.bluetoothController
+
+class ExitActivityOnBluetoothDisable : Fragment() {
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+        val autoDisposable = AutoDispose.autoDisposable<RxBleClient.State>(AndroidLifecycleScopeProvider.from(this, Lifecycle.Event.ON_DESTROY))
+        bluetoothController.bluetoothStateEvents
+                .toFlowable(BackpressureStrategy.LATEST)
+                .filter { it == RxBleClient.State.BLUETOOTH_NOT_ENABLED }
+                .take(1)
+                .observeOn(AndroidSchedulers.mainThread())
+                .`as`(autoDisposable)
+                .subscribe(
+                        { activity?.finish() },
+                        {}
+                )
+    }
+}
\ No newline at end of file