(fix): mobile notification showing "Connected" if the device is offline

apps/tauri/src-tauri/gen/android/app/src/main/AndroidManifest.xml

@@ -1,6 +1,7 @@
 <?xml version="1.0" encoding="utf-8"?>
 <manifest xmlns:android="http://schemas.android.com/apk/res/android">
     <uses-permission android:name="android.permission.INTERNET" />
+    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
     <uses-permission android:name="android.permission.CAMERA" />
     <uses-permission android:name="android.permission.RECORD_AUDIO" />
     <uses-permission android:name="android.permission.MODIFY_AUDIO_SETTINGS" />

apps/tauri/src-tauri/gen/android/app/src/main/java/net/tensamin/client/MtpForegroundService.kt

@@ -8,15 +8,30 @@ import android.app.Service
 import android.content.Context
 import android.content.Intent
 import android.content.pm.ServiceInfo
+import android.net.ConnectivityManager
+import android.net.Network
+import android.net.NetworkCapabilities
 import android.os.Build
 import android.os.IBinder
 import androidx.core.app.NotificationCompat
 
 class MtpForegroundService : Service() {
   private var started = false
+  private val networkCallback = object : ConnectivityManager.NetworkCallback() {
+    override fun onAvailable(network: Network) = refreshNotification()
+    override fun onLost(network: Network) = refreshNotification()
+    override fun onCapabilitiesChanged(network: Network, capabilities: NetworkCapabilities) =
+      refreshNotification()
+  }
 
   override fun onBind(intent: Intent?): IBinder? = null
 
+  override fun onCreate() {
+    super.onCreate()
+    getSystemService(ConnectivityManager::class.java)
+      .registerDefaultNetworkCallback(networkCallback)
+  }
+
   override fun onStartCommand(intent: Intent?, flags: Int, startId: Int): Int {
     if (intent?.action == ACTION_STOP) {
       MtpSecureStore.setEnabled(this, false)
@@ -28,7 +43,8 @@ class MtpForegroundService : Service() {
     if (started) return START_STICKY
 
     createChannel(this)
-    val notification = buildNotification(this, "Connecting")
+    connectionStatus = "Connecting"
+    val notification = buildNotification(this, displayedStatus(this))
     if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.UPSIDE_DOWN_CAKE) {
       startForeground(
         NOTIFICATION_ID,
@@ -65,20 +81,37 @@ class MtpForegroundService : Service() {
   }
 
   override fun onDestroy() {
+    getSystemService(ConnectivityManager::class.java).unregisterNetworkCallback(networkCallback)
     if (!MtpSecureStore.isEnabled(this)) NativeMtpBridge.nativeStop()
     super.onDestroy()
   }
 
+  private fun refreshNotification() {
+    updateNotification(this, connectionStatus)
+  }
+
   companion object {
     private const val CHANNEL_ID = "tensamin-connection"
     private const val NOTIFICATION_ID = 2201
     private const val ACTION_STOP = "net.tensamin.client.STOP_MTP"
+    @Volatile private var connectionStatus = "Connecting"
 
     fun updateNotification(context: Context, status: String) {
       if (!MtpSecureStore.isEnabled(context)) return
+      connectionStatus = status
       createChannel(context)
       context.getSystemService(NotificationManager::class.java)
-        .notify(NOTIFICATION_ID, buildNotification(context, status))
+        .notify(NOTIFICATION_ID, buildNotification(context, displayedStatus(context)))
+    }
+
+    private fun displayedStatus(context: Context): String {
+      val connectivity = context.getSystemService(ConnectivityManager::class.java)
+      val network = connectivity.activeNetwork ?: return "No network"
+      val capabilities = connectivity.getNetworkCapabilities(network) ?: return "No network"
+      return if (
+        capabilities.hasCapability(NetworkCapabilities.NET_CAPABILITY_INTERNET) &&
+        capabilities.hasCapability(NetworkCapabilities.NET_CAPABILITY_VALIDATED)
+      ) connectionStatus else "No network"
     }
 
     private fun createChannel(context: Context) {