add notifcaiton support with unmount button

app/src/main/java/sh/sar/isodroid/viewmodel/MainViewModel.kt

@@ -20,7 +20,10 @@ import sh.sar.isodroid.data.IsoFile
 import sh.sar.isodroid.data.MountOptions
 import sh.sar.isodroid.data.MountStatus
 import sh.sar.isodroid.isodrive.IsoDriveManager
+import sh.sar.isodroid.isodrive.MountEvent
+import sh.sar.isodroid.isodrive.MountEventBus
 import sh.sar.isodroid.isodrive.SupportStatus
+import sh.sar.isodroid.notification.NotificationHelper
 import sh.sar.isodroid.root.RootManager
 import java.io.File
 
@@ -29,6 +32,7 @@ private val Application.dataStore: DataStore<Preferences> by preferencesDataStor
 class MainViewModel(application: Application) : AndroidViewModel(application) {
 
     private val isoDriveManager = IsoDriveManager.getInstance(application)
+    private val notificationHelper = NotificationHelper.getInstance(application)
     private val dataStore = application.dataStore
 
     private val _uiState = MutableStateFlow(MainUiState())
@@ -45,6 +49,21 @@ class MainViewModel(application: Application) : AndroidViewModel(application) {
         viewModelScope.launch {
             initialize()
         }
+
+        // Observe mount events from notification actions
+        viewModelScope.launch {
+            MountEventBus.events.collect { event ->
+                when (event) {
+                    is MountEvent.Unmounted -> {
+                        checkMountStatus()
+                        _uiState.update { it.copy(successMessage = "Unmounted successfully") }
+                    }
+                    is MountEvent.Mounted -> {
+                        checkMountStatus()
+                    }
+                }
+            }
+        }
     }
 
     private suspend fun initialize() {
@@ -178,6 +197,15 @@ class MainViewModel(application: Application) : AndroidViewModel(application) {
     private suspend fun checkMountStatus() {
         val status = isoDriveManager.getStatus()
         _uiState.update { it.copy(mountStatus = status) }
+        updateNotification(status)
+    }
+
+    private fun updateNotification(status: MountStatus) {
+        if (status.mounted) {
+            notificationHelper.showMountedNotification(status)
+        } else {
+            notificationHelper.hideNotification()
+        }
     }
 
     suspend fun mount(path: String, options: MountOptions) {