ViewModels with lifecycle integration, new Device class, code reformat

app/src/main/java/com/helible/pilot/receivers/BluuetothStateReceiver.kt

@@ -0,0 +1,39 @@
+package com.helible.pilot.receivers
+
+import android.annotation.SuppressLint
+import android.bluetooth.BluetoothDevice
+import android.content.BroadcastReceiver
+import android.content.Context
+import android.content.Intent
+import android.os.Build
+
+class BluetoothStateReceiver(
+    private val onDeviceFound: (device: BluetoothDevice, rssi: Short) -> Unit,
+    private val onConnectedStateChanged: (isConnected: Boolean, BluetoothDevice) -> Unit,
+) : BroadcastReceiver() {
+    override fun onReceive(context: Context?, intent: Intent?) {
+        val device = if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.TIRAMISU) {
+            intent?.getParcelableExtra(
+                BluetoothDevice.EXTRA_DEVICE,
+                BluetoothDevice::class.java
+            )
+        } else {
+            @Suppress("DEPRECATION") intent?.getParcelableExtra(BluetoothDevice.EXTRA_DEVICE)
+        }
+        when (intent?.action) {
+            BluetoothDevice.ACTION_FOUND -> {
+                val rssi = intent.getShortExtra(BluetoothDevice.EXTRA_RSSI, Short.MIN_VALUE)
+                @SuppressLint("MissingPermission") if (device?.name != null)
+                    onDeviceFound(device, rssi)
+            }
+
+            BluetoothDevice.ACTION_ACL_CONNECTED -> {
+                onConnectedStateChanged(true, device ?: return)
+            }
+
+            BluetoothDevice.ACTION_ACL_DISCONNECTED -> {
+                onConnectedStateChanged(false, device ?: return)
+            }
+        }
+    }
+}