Delete file & folder on wipe

app/src/main/java/sushi/hardcore/droidfs/explorers/BaseExplorerActivity.kt

@@ -425,14 +425,14 @@ open class BaseExplorerActivity : BaseActivity() {
         }
     }
 
-    fun importDirectory(sourceUri: Uri, callback: (String?, List<Uri>) -> Unit) {
+    fun importDirectory(sourceUri: Uri, callback: (String?, List<Uri>, DocumentFile) -> Unit) {
         val tree = DocumentFile.fromTreeUri(this, sourceUri)!! //non-null after Lollipop
         val operation = OperationFile.fromExplorerElement(ExplorerElement(tree.name!!, 0, parentPath = currentDirectoryPath))
         checkPathOverwrite(arrayListOf(operation), currentDirectoryPath) { checkedOperation ->
             checkedOperation?.let {
                 fileOperationService.importDirectory(checkedOperation[0].dstPath!!, tree) { failedItem, uris ->
                     runOnUiThread {
-                        callback(failedItem, uris)
+                        callback(failedItem, uris, tree)
                     }
                 }
             }

app/src/main/java/sushi/hardcore/droidfs/explorers/ExplorerActivity.kt

@@ -9,6 +9,7 @@ import android.view.WindowManager
 import android.widget.EditText
 import android.widget.Toast
 import androidx.activity.result.contract.ActivityResultContracts
+import androidx.documentfile.provider.DocumentFile
 import sushi.hardcore.droidfs.CameraActivity
 import sushi.hardcore.droidfs.GocryptfsVolume
 import sushi.hardcore.droidfs.OpenActivity
@@ -121,7 +122,7 @@ class ExplorerActivity : BaseExplorerActivity() {
         }
     }
 
-    private fun onImportComplete(failedItem: String?, uris: List<Uri>) {
+    private fun onImportComplete(failedItem: String?, urisToWipe: List<Uri>, rootFile: DocumentFile? = null) {
         if (failedItem == null){
             ColoredAlertDialogBuilder(this)
                 .setTitle(R.string.success_import)
@@ -130,9 +131,10 @@ class ExplorerActivity : BaseExplorerActivity() {
                                 ${getString(R.string.ask_for_wipe)}
                                 """.trimIndent())
                 .setPositiveButton(R.string.yes) { _, _ ->
-                    fileOperationService.wipeUris(uris) { errorMsg ->
+                    fileOperationService.wipeUris(urisToWipe) { errorMsg ->
                         runOnUiThread {
                             if (errorMsg == null){
+                                rootFile?.delete()
                                 Toast.makeText(this, R.string.wipe_successful, Toast.LENGTH_SHORT).show()
                             } else {
                                 ColoredAlertDialogBuilder(this)

app/src/main/java/sushi/hardcore/droidfs/file_operations/FileOperationService.kt

@@ -288,15 +288,17 @@ class FileOperationService : Service() {
                 return@Thread
             }
 
-            updateNotificationProgress(notification, 0, dstDirs.size)
-
             // create destination folders so the new files can use them
-            for (mkdir in dstDirs) {
+            for (dir in dstDirs) {
                 if (notifications[notification.notificationId]!!) {
                     cancelNotification(notification)
                     return@Thread
                 }
-                gocryptfsVolume.mkdir(mkdir)
+                if (!gocryptfsVolume.mkdir(dir)) {
+                    cancelNotification(notification)
+                    callback(dir, srcUris)
+                    break
+                }
             }
 
             importFilesFromUris(dstFiles, srcUris, notification) { failedItem ->

app/src/main/java/sushi/hardcore/droidfs/util/Wiper.kt

@@ -4,6 +4,7 @@ import android.content.Context
 import android.net.Uri
 import android.provider.OpenableColumns
 import android.widget.EditText
+import androidx.documentfile.provider.DocumentFile
 import sushi.hardcore.droidfs.ConstValues
 import sushi.hardcore.droidfs.R
 import java.io.*
@@ -23,26 +24,28 @@ object Wiper {
             val size = cursor.getLong(sizeIndex)
             cursor.close()
             try {
-                var os = context.contentResolver.openOutputStream(uri)
+                var os = context.contentResolver.openOutputStream(uri)!!
                 val buff = ByteArray(buff_size)
                 Arrays.fill(buff, 0.toByte())
                 val writes = ceil(size.toDouble() / buff_size).toInt()
                 for (i in 0 until ConstValues.wipe_passes) {
                     for (j in 0 until writes) {
-                        os!!.write(buff)
+                        os.write(buff)
                     }
                     if (i < ConstValues.wipe_passes - 1) {
                         //reopening to flush and seek
-                        os!!.close()
+                        os.close()
-                        os = context.contentResolver.openOutputStream(uri)
+                        os = context.contentResolver.openOutputStream(uri)!!
                     }
                 }
                 try {
                     context.contentResolver.delete(uri, null, null)
                 } catch (e: UnsupportedOperationException){
-                    (os as FileOutputStream).channel.truncate(0) //truncate to 0 if cannot delete
+                    if (DocumentFile.fromSingleUri(context, uri)?.delete() != true) {
+                        (os as FileOutputStream).channel.truncate(0) //truncate to 0 if cannot delete
+                    }
                 }
-                os!!.close()
+                os.close()
                 return null
             } catch (e: Exception) {
                 return e.message