Refactor example app and enhance Deepgram API integration

android/src/main/AndroidManifest.xml

@@ -1,2 +1,15 @@
 <manifest xmlns:android="http://schemas.android.com/apk/res/android">
+
+	<uses-permission android:name="android.permission.FOREGROUND_SERVICE" />
+	<uses-permission android:name="android.permission.FOREGROUND_SERVICE_MICROPHONE" />
+	<uses-permission android:name="android.permission.FOREGROUND_SERVICE_MEDIA_PLAYBACK" />
+
+	<application>
+		<service
+			android:name=".DeepgramAudioService"
+			android:enabled="true"
+			android:exported="false"
+			android:foregroundServiceType="microphone|mediaPlayback" />
+	</application>
+
 </manifest>

android/src/main/java/com/deepgram/DeepgramAudioService.kt

@@ -0,0 +1,85 @@
+package com.deepgram
+
+import android.app.Notification
+import android.app.NotificationChannel
+import android.app.NotificationManager
+import android.app.Service
+import android.content.Context
+import android.content.Intent
+import android.os.Build
+import android.os.IBinder
+
+class DeepgramAudioService : Service() {
+  companion object {
+    private const val CHANNEL_ID = "deepgram_audio_channel"
+    private const val CHANNEL_NAME = "Deepgram Audio"
+    private const val NOTIFICATION_ID = 43123
+
+    fun start(context: Context) {
+      val intent = Intent(context, DeepgramAudioService::class.java)
+      if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
+        context.startForegroundService(intent)
+      } else {
+        context.startService(intent)
+      }
+    }
+
+    fun stop(context: Context) {
+      val intent = Intent(context, DeepgramAudioService::class.java)
+      context.stopService(intent)
+    }
+  }
+
+  override fun onBind(intent: Intent?): IBinder? = null
+
+  override fun onCreate() {
+    super.onCreate()
+    createNotificationChannelIfNeeded()
+  }
+
+  override fun onStartCommand(intent: Intent?, flags: Int, startId: Int): Int {
+    val notification = buildNotification()
+    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.Q) {
+      startForeground(
+        NOTIFICATION_ID,
+        notification,
+        android.content.pm.ServiceInfo.FOREGROUND_SERVICE_TYPE_MICROPHONE or
+          android.content.pm.ServiceInfo.FOREGROUND_SERVICE_TYPE_MEDIA_PLAYBACK
+      )
+    } else {
+      startForeground(NOTIFICATION_ID, notification)
+    }
+
+    return START_STICKY
+  }
+
+  private fun createNotificationChannelIfNeeded() {
+    if (Build.VERSION.SDK_INT < Build.VERSION_CODES.O) return
+
+    val manager = getSystemService(Context.NOTIFICATION_SERVICE) as? NotificationManager
+      ?: return
+
+    val channel = NotificationChannel(
+      CHANNEL_ID,
+      CHANNEL_NAME,
+      NotificationManager.IMPORTANCE_LOW
+    )
+    channel.description = "Keeps Deepgram audio capture and playback active"
+    manager.createNotificationChannel(channel)
+  }
+
+  private fun buildNotification(): Notification {
+    val builder = if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
+      Notification.Builder(this, CHANNEL_ID)
+    } else {
+      Notification.Builder(this)
+    }
+
+    return builder
+      .setContentTitle("Deepgram Audio Active")
+      .setContentText("Recording or playback is running")
+      .setSmallIcon(android.R.drawable.stat_sys_speakerphone)
+      .setOngoing(true)
+      .build()
+  }
+}