feat: indicator for backup in progress

Author: AndroidLabs-org

app/src/main/java/org/androidlabs/applistbackup/BackupService.kt

@@ -24,6 +24,11 @@ import android.util.Log
 import androidx.core.app.NotificationCompat
 import androidx.core.net.toFile
 import androidx.documentfile.provider.DocumentFile
+import kotlinx.coroutines.CoroutineScope
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.SupervisorJob
+import kotlinx.coroutines.flow.MutableStateFlow
+import kotlinx.coroutines.launch
 import org.androidlabs.applistbackup.data.BackupAppDetails
 import org.androidlabs.applistbackup.data.BackupAppInfo
 import org.androidlabs.applistbackup.data.BackupFormat
@@ -49,12 +54,17 @@ data class BackupFile(
 class BackupService : Service() {
     private val tag: String = "BackupService"
 
+    private val serviceJob = SupervisorJob()
+    private val serviceScope = CoroutineScope(Dispatchers.IO + serviceJob)
+
     companion object {
         const val SERVICE_CHANNEL_ID = "BackupService"
         const val BACKUP_CHANNEL_ID = "Backup"
 
         const val FILE_NAME_PREFIX = "app-list-backup-"
 
+        val isRunning = MutableStateFlow(false)
+
         private var onCompleteCallback: ((Uri) -> Unit)? = null
 
         fun getBackupFolder(context: Context): BackupRawFile? {
@@ -224,9 +234,23 @@ class BackupService : Service() {
 
     override fun onStartCommand(intent: Intent?, flags: Int, startId: Int): Int {
         Log.d(tag, "start: ${intent.toString()}")
-        val startDate = Date()
+
         val source = intent?.getStringExtra("source")
         val inputFormat = intent?.getStringExtra("format")
+
+        serviceScope.launch {
+            performBackup(source, inputFormat)
+            stopForeground(STOP_FOREGROUND_REMOVE)
+            stopSelf()
+        }
+
+        return START_STICKY
+    }
+
+    private fun performBackup(source: String?, inputFormat: String?) {
+        isRunning.value = true
+
+        val startDate = Date()
         createNotificationChannels()
 
         val backupsDir = getBackupFolder(this)
@@ -712,9 +736,7 @@ class BackupService : Service() {
             manager.notify(getNotificationId(), endNotification)
         }
 
-        stopForeground(STOP_FOREGROUND_REMOVE)
-
-        return START_STICKY
+        isRunning.value = false
     }
 
     private fun getNotificationId(): Int {
@@ -765,6 +787,7 @@ class BackupService : Service() {
 
     override fun onDestroy() {
         super.onDestroy()
+        serviceJob.cancel()
         Log.d(tag, "destroy")
     }
 }

app/src/main/java/org/androidlabs/applistbackup/backupnow/BackupFragment.kt

@@ -18,6 +18,8 @@ import androidx.compose.material3.Text
 import androidx.compose.runtime.Composable
 import androidx.compose.runtime.DisposableEffect
 import androidx.compose.runtime.LaunchedEffect
+import androidx.compose.runtime.collectAsState
+import androidx.compose.runtime.getValue
 import androidx.compose.runtime.livedata.observeAsState
 import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
@@ -81,6 +83,7 @@ private fun ActivityState(
     val isNotificationEnabled = viewModel.notificationEnabled.observeAsState(initial = false)
     val backupUri = viewModel.backupUri.observeAsState()
     val backupFiles = viewModel.backupFiles.observeAsState(initial = emptyList())
+    val isRunning by viewModel.isBackupRunning.collectAsState()
 
     LaunchedEffect(key1 = true) {
         viewModel.refreshNotificationStatus()
@@ -123,8 +126,11 @@ private fun ActivityState(
             Spacer(modifier = Modifier.height(16.dp))
 
             if (backupUri.value != null) {
-                Button(onClick = runBackup) {
-                    Text(text = stringResource(R.string.backup_now))
+                Button(
+                    onClick = runBackup,
+                    enabled = !isRunning
+                ) {
+                    Text(text = stringResource(if (isRunning) R.string.in_progress else R.string.backup_now))
                 }
 
                 if (backupFiles.value.isNotEmpty()) {

app/src/main/java/org/androidlabs/applistbackup/backupnow/BackupViewModel.kt

@@ -11,6 +11,9 @@ import androidx.lifecycle.viewModelScope
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.Job
 import kotlinx.coroutines.delay
+import kotlinx.coroutines.flow.MutableStateFlow
+import kotlinx.coroutines.flow.StateFlow
+import kotlinx.coroutines.flow.asStateFlow
 import kotlinx.coroutines.isActive
 import kotlinx.coroutines.launch
 import org.androidlabs.applistbackup.BackupFile
@@ -29,6 +32,9 @@ class BackupViewModel(application: Application) : AndroidViewModel(application)
     private val _backupFiles = MutableLiveData<List<BackupFile>>(emptyList())
     val backupFiles: LiveData<List<BackupFile>> = _backupFiles
 
+    private val _isBackupRunning = MutableStateFlow(false)
+    val isBackupRunning: StateFlow<Boolean> = _isBackupRunning.asStateFlow()
+
     private var backupSettingsListener: SharedPreferences.OnSharedPreferenceChangeListener? = null
     private var pollingJob: Job? = null
 
@@ -39,6 +45,12 @@ class BackupViewModel(application: Application) : AndroidViewModel(application)
 
         backupSettingsListener =
             Settings.observeBackupUri(getApplication(), ::refreshBackups)
+
+        viewModelScope.launch {
+            BackupService.isRunning.collect { state ->
+                _isBackupRunning.value = state
+            }
+        }
     }
 
     private fun refreshBackups() {