Unify code to start new backup

to ensure that files backup and app backup will always run if they should

app/src/main/java/com/stevesoltys/seedvault/UsbIntentReceiver.kt

@@ -20,14 +20,11 @@ import android.os.Handler
 import android.os.Looper
 import android.provider.DocumentsContract
 import android.util.Log
-import androidx.core.content.ContextCompat.startForegroundService
 import com.stevesoltys.seedvault.metadata.MetadataManager
 import com.stevesoltys.seedvault.settings.FlashDrive
 import com.stevesoltys.seedvault.settings.SettingsManager
-import com.stevesoltys.seedvault.storage.StorageBackupService
-import com.stevesoltys.seedvault.storage.StorageBackupService.Companion.EXTRA_START_APP_BACKUP
 import com.stevesoltys.seedvault.ui.storage.AUTHORITY_STORAGE
-import com.stevesoltys.seedvault.worker.AppBackupWorker
+import com.stevesoltys.seedvault.worker.BackupRequester.Companion.requestFilesAndAppBackup
 import org.koin.core.context.GlobalContext.get
 import java.util.Date
 
@@ -64,16 +61,7 @@ class UsbIntentReceiver : UsbMonitor() {
     }
 
     override fun onStatusChanged(context: Context, action: String, device: UsbDevice) {
-        if (settingsManager.isStorageBackupEnabled()) {
-            val i = Intent(context, StorageBackupService::class.java)
-            // this starts an app backup afterwards
-            i.putExtra(EXTRA_START_APP_BACKUP, true)
-            startForegroundService(context, i)
-        } else if (backupManager.isBackupEnabled) {
-            AppBackupWorker.scheduleNow(context, reschedule = false)
-        } else {
-            Log.d(TAG, "Neither files nor app backup enabled, do nothing.")
-        }
+        requestFilesAndAppBackup(context, settingsManager, backupManager)
     }
 
 }

app/src/main/java/com/stevesoltys/seedvault/settings/SettingsViewModel.kt

@@ -9,7 +9,6 @@ import android.app.Application
 import android.app.backup.IBackupManager
 import android.app.job.JobInfo.NETWORK_TYPE_NONE
 import android.app.job.JobInfo.NETWORK_TYPE_UNMETERED
-import android.content.Intent
 import android.database.ContentObserver
 import android.net.ConnectivityManager
 import android.net.Network
@@ -24,7 +23,6 @@ import android.util.Log
 import android.widget.Toast
 import android.widget.Toast.LENGTH_LONG
 import androidx.annotation.UiThread
-import androidx.core.content.ContextCompat.startForegroundService
 import androidx.lifecycle.LiveData
 import androidx.lifecycle.MutableLiveData
 import androidx.lifecycle.liveData
@@ -42,14 +40,13 @@ import com.stevesoltys.seedvault.metadata.MetadataManager
 import com.stevesoltys.seedvault.permitDiskReads
 import com.stevesoltys.seedvault.backend.BackendManager
 import com.stevesoltys.seedvault.storage.StorageBackupJobService
-import com.stevesoltys.seedvault.storage.StorageBackupService
-import com.stevesoltys.seedvault.storage.StorageBackupService.Companion.EXTRA_START_APP_BACKUP
 import com.stevesoltys.seedvault.transport.backup.BackupInitializer
 import com.stevesoltys.seedvault.ui.LiveEvent
 import com.stevesoltys.seedvault.ui.MutableLiveEvent
 import com.stevesoltys.seedvault.ui.RequireProvisioningViewModel
 import com.stevesoltys.seedvault.worker.AppBackupWorker
 import com.stevesoltys.seedvault.worker.AppBackupWorker.Companion.UNIQUE_WORK_NAME
+import com.stevesoltys.seedvault.worker.BackupRequester.Companion.requestFilesAndAppBackup
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.flow.SharingStarted
 import kotlinx.coroutines.flow.StateFlow
@@ -224,17 +221,8 @@ internal class SettingsViewModel(
     }
 
     internal fun backupNow() {
-        viewModelScope.launch(Dispatchers.IO) {
-            val isAppBackupEnabled = backupManager.isBackupEnabled
-            if (settingsManager.isStorageBackupEnabled()) {
-                val i = Intent(app, StorageBackupService::class.java)
-                // this starts an app backup afterwards (if enabled)
-                i.putExtra(EXTRA_START_APP_BACKUP, isAppBackupEnabled)
-                startForegroundService(app, i)
-            } else if (isAppBackupEnabled) {
-                AppBackupWorker.scheduleNow(app, reschedule = !backendManager.isOnRemovableDrive)
-            }
-        }
+        val reschedule = !backendManager.isOnRemovableDrive
+        requestFilesAndAppBackup(app, settingsManager, backupManager, reschedule)
     }
 
     private fun getAppStatusResult(): LiveData<AppStatusResult> = liveData(Dispatchers.Default) {

app/src/main/java/com/stevesoltys/seedvault/ui/storage/BackupStorageViewModel.kt

@@ -21,6 +21,7 @@ import com.stevesoltys.seedvault.settings.SettingsManager
 import com.stevesoltys.seedvault.storage.StorageBackupJobService
 import com.stevesoltys.seedvault.transport.backup.BackupInitializer
 import com.stevesoltys.seedvault.worker.AppBackupWorker
+import com.stevesoltys.seedvault.worker.BackupRequester.Companion.requestFilesAndAppBackup
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.launch
 import org.calyxos.backup.storage.api.StorageBackup
@@ -70,8 +71,6 @@ internal class BackupStorageViewModel(
         viewModelScope.launch(Dispatchers.IO) {
             try {
                 // remove old storage snapshots and clear cache
-                // TODO For SAF, this also does create all 255 chunk folders which takes time
-                //  pass a flag to getCurrentBackupSnapshots() to not create missing folders?
                 storageBackup.init()
                 // initialize the new location (if backups are enabled)
                 if (backupManager.isBackupEnabled) {
@@ -83,7 +82,7 @@ internal class BackupStorageViewModel(
                         val requestBackup = isUsb && !isSetupWizard
                         if (requestBackup) {
                             Log.i(TAG, "Requesting a backup now, because we use USB storage")
-                            AppBackupWorker.scheduleNow(app, reschedule = false)
+                            requestFilesAndAppBackup(app, settingsManager, backupManager)
                         }
                         // notify the UI that the location has been set
                         mLocationChecked.postEvent(LocationResult())

app/src/main/java/com/stevesoltys/seedvault/worker/BackupRequester.kt

@@ -8,9 +8,15 @@ package com.stevesoltys.seedvault.worker
 import android.app.backup.BackupManager
 import android.app.backup.IBackupManager
 import android.content.Context
+import android.content.Intent
 import android.os.RemoteException
 import android.util.Log
+import androidx.annotation.UiThread
 import androidx.annotation.WorkerThread
+import androidx.core.content.ContextCompat.startForegroundService
+import com.stevesoltys.seedvault.settings.SettingsManager
+import com.stevesoltys.seedvault.storage.StorageBackupService
+import com.stevesoltys.seedvault.storage.StorageBackupService.Companion.EXTRA_START_APP_BACKUP
 import com.stevesoltys.seedvault.BackupMonitor
 import com.stevesoltys.seedvault.transport.backup.PackageService
 import com.stevesoltys.seedvault.ui.notification.BackupNotificationManager
@@ -35,6 +41,29 @@ internal class BackupRequester(
     val packageService: PackageService,
 ) : KoinComponent {
 
+    companion object {
+        @UiThread
+        fun requestFilesAndAppBackup(
+            context: Context,
+            settingsManager: SettingsManager,
+            backupManager: IBackupManager,
+            reschedule: Boolean = false,
+        ) {
+            val appBackupEnabled = backupManager.isBackupEnabled
+            // TODO eventually, we could think about running files and app backup simultaneously
+            if (settingsManager.isStorageBackupEnabled()) {
+                val i = Intent(context, StorageBackupService::class.java)
+                // this starts an app backup afterwards
+                i.putExtra(EXTRA_START_APP_BACKUP, appBackupEnabled)
+                startForegroundService(context, i)
+            } else if (appBackupEnabled) {
+                AppBackupWorker.scheduleNow(context, reschedule)
+            } else {
+                Log.d(TAG, "Neither files nor app backup enabled, do nothing.")
+            }
+        }
+    }
+
     val isBackupEnabled: Boolean get() = backupManager.isBackupEnabled
 
     private val packages = packageService.eligiblePackages