Catch out of space errors and show error notification

app/src/main/java/com/stevesoltys/seedvault/plugins/saf/DocumentsStorage.kt

@@ -158,13 +158,14 @@ internal suspend fun DocumentFile.createOrGetFile(
             if (this.name != name) {
                 throw IOException("File named ${this.name}, but should be $name")
             }
-        } ?: throw IOException()
+        } ?: throw IOException("could not find nor create")
     } catch (e: Exception) {
         // SAF can throw all sorts of exceptions, so wrap it in IOException.
         // E.g. IllegalArgumentException can be thrown by FileSystemProvider#isChildDocument()
         // when flash drive is not plugged-in:
         // http://aosp.opersys.com/xref/android-11.0.0_r8/xref/frameworks/base/core/java/com/android/internal/content/FileSystemProvider.java#135
-        throw IOException(e)
+        if (e is IOException) throw e
+        else throw IOException(e)
     }
 }
 

app/src/main/java/com/stevesoltys/seedvault/transport/backup/BackupCoordinator.kt

@@ -360,6 +360,9 @@ internal class BackupCoordinator(
                         onPackageBackedUp(packageInfo, BackupType.KV, size)
                     } catch (e: Exception) {
                         Log.e(TAG, "Error calling onPackageBackedUp for $packageName", e)
+                        if (e is IOException &&
+                            e.message?.contains("No space left on device") == true
+                        ) nm.onInsufficientSpaceError()
                         result = TRANSPORT_PACKAGE_REJECTED
                     }
                 }

app/src/main/java/com/stevesoltys/seedvault/ui/notification/BackupNotificationManager.kt

@@ -17,6 +17,7 @@ import android.text.format.Formatter
 import android.util.Log
 import androidx.core.app.NotificationCompat.Action
 import androidx.core.app.NotificationCompat.Builder
+import androidx.core.app.NotificationCompat.CATEGORY_ERROR
 import androidx.core.app.NotificationCompat.FOREGROUND_SERVICE_IMMEDIATE
 import androidx.core.app.NotificationCompat.PRIORITY_DEFAULT
 import androidx.core.app.NotificationCompat.PRIORITY_HIGH
@@ -36,9 +37,10 @@ private const val CHANNEL_ID_RESTORE_ERROR = "NotificationRestoreError"
 internal const val NOTIFICATION_ID_OBSERVER = 1
 private const val NOTIFICATION_ID_SUCCESS = 2
 private const val NOTIFICATION_ID_ERROR = 3
-private const val NOTIFICATION_ID_RESTORE_ERROR = 4
-private const val NOTIFICATION_ID_BACKGROUND = 5
-private const val NOTIFICATION_ID_NO_MAIN_KEY_ERROR = 6
+private const val NOTIFICATION_ID_SPACE_ERROR = 4
+private const val NOTIFICATION_ID_RESTORE_ERROR = 5
+private const val NOTIFICATION_ID_BACKGROUND = 6
+private const val NOTIFICATION_ID_NO_MAIN_KEY_ERROR = 7
 
 private val TAG = BackupNotificationManager::class.java.simpleName
 
@@ -214,6 +216,20 @@ internal class BackupNotificationManager(private val context: Context) {
         nm.cancel(NOTIFICATION_ID_ERROR)
     }
 
+    fun onInsufficientSpaceError() {
+        val notification = Builder(context, CHANNEL_ID_ERROR).apply {
+            setSmallIcon(R.drawable.ic_cloud_error)
+            setContentTitle(context.getString(R.string.notification_space_error_title))
+            setContentText(context.getString(R.string.notification_space_error_text))
+            setWhen(System.currentTimeMillis())
+            setOnlyAlertOnce(true)
+            setAutoCancel(true)
+            setPriority(PRIORITY_HIGH)
+            setCategory(CATEGORY_ERROR)
+        }.build()
+        nm.notify(NOTIFICATION_ID_SPACE_ERROR, notification)
+    }
+
     @SuppressLint("RestrictedApi")
     fun onRemovableStorageNotAvailableForRestore(packageName: String, storageName: String) {
         val appName = try {

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

@@ -110,6 +110,9 @@ internal class ApkBackupManager(
             } ?: false
         } catch (e: IOException) {
             Log.e(TAG, "Error while writing APK for $packageName", e)
+            if (e.message?.contains("No space left on device") == true) {
+                nm.onInsufficientSpaceError()
+            }
             false
         }
     }

app/src/main/res/values/strings.xml

@@ -160,6 +160,9 @@
     <string name="notification_error_text">A device backup failed to run.</string>
     <string name="notification_error_action">Fix</string>
 
+    <string name="notification_space_error_title">Insufficient backup space</string>
+    <string name="notification_space_error_text">Your backup location is running out of space. Free up space, so backups can run.</string>
+
     <string name="notification_restore_error_channel_title">Auto restore flash drive error</string>
     <string name="notification_restore_error_title">Could not restore data for %1$s</string>
     <string name="notification_restore_error_text">Plug in your %1$s before installing the app to restore its data from backup.</string>