Adding an 'Import/Encrypt Folder' button

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

@@ -17,6 +17,7 @@ import android.widget.EditText
 import android.widget.ListView
 import android.widget.TextView
 import android.widget.Toast
+import androidx.documentfile.provider.DocumentFile
 import androidx.lifecycle.ViewModel
 import androidx.lifecycle.ViewModelProvider
 import androidx.swiperefreshlayout.widget.SwipeRefreshLayout
@@ -254,7 +255,7 @@ open class BaseExplorerActivity : BaseActivity() {
                     synchronized(this) {
                         explorerElements.add(
                             0,
-                            ExplorerElement("..", (-1).toShort(), -1, -1, currentDirectoryPath)
+                            ExplorerElement("..", (-1).toShort(), parentPath = currentDirectoryPath)
                         )
                     }
                 }
@@ -408,13 +409,13 @@ open class BaseExplorerActivity : BaseActivity() {
                 items.clear()
                 break
             } else {
-                items.add(OperationFile.fromExplorerElement(ExplorerElement(fileName, 1, -1, -1, currentDirectoryPath)))
+                items.add(OperationFile.fromExplorerElement(ExplorerElement(fileName, 1, parentPath = currentDirectoryPath)))
             }
         }
         if (items.size > 0) {
             checkPathOverwrite(items, currentDirectoryPath) { checkedItems ->
                 checkedItems?.let {
-                    fileOperationService.importFilesFromUris(checkedItems, uris){ failedItem ->
+                    fileOperationService.importFilesFromUris(checkedItems.map { it.dstPath!! }, uris){ failedItem ->
                         runOnUiThread {
                             callback(failedItem)
                         }
@@ -424,6 +425,20 @@ open class BaseExplorerActivity : BaseActivity() {
         }
     }
 
+    fun importDirectory(sourceUri: Uri, callback: (String?, List<Uri>) -> 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)
+                    }
+                }
+            }
+        }
+    }
+
     protected fun rename(old_name: String, new_name: String){
         if (new_name.isEmpty()) {
             Toast.makeText(this, R.string.error_filename_empty, Toast.LENGTH_SHORT).show()

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

@@ -2,6 +2,7 @@ package sushi.hardcore.droidfs.explorers
 
 import android.app.Activity
 import android.content.Intent
+import android.net.Uri
 import android.view.Menu
 import android.view.MenuItem
 import android.view.WindowManager
@@ -44,7 +45,7 @@ class ExplorerActivity : BaseExplorerActivity() {
                         for (i in paths.indices) {
                             operationFiles.add(
                                 OperationFile.fromExplorerElement(
-                                    ExplorerElement(File(paths[i]).name, types[i].toShort(), -1, -1, PathUtils.getParentPath(paths[i]))
+                                    ExplorerElement(File(paths[i]).name, types[i].toShort(), parentPath = PathUtils.getParentPath(paths[i]))
                                 )
                             )
                             if (types[i] == 0){ //directory
@@ -57,7 +58,7 @@ class ExplorerActivity : BaseExplorerActivity() {
                 } else {
                     operationFiles.add(
                         OperationFile.fromExplorerElement(
-                            ExplorerElement(File(path).name, 1, -1, -1, PathUtils.getParentPath(path))
+                            ExplorerElement(File(path).name, 1, parentPath = PathUtils.getParentPath(path))
                         )
                     )
                 }
@@ -92,6 +93,35 @@ class ExplorerActivity : BaseExplorerActivity() {
     private val pickFiles = registerForActivityResult(ActivityResultContracts.OpenMultipleDocuments()) { uris ->
         if (uris != null) {
             importFilesFromUris(uris){ failedItem ->
+                onImportComplete(failedItem, uris)
+            }
+        }
+    }
+    private val pickExportDirectory = registerForActivityResult(ActivityResultContracts.OpenDocumentTree()) { uri ->
+        if (uri != null) {
+            fileOperationService.exportFiles(uri, explorerAdapter.selectedItems.map { i -> explorerElements[i] }){ failedItem ->
+                runOnUiThread {
+                    if (failedItem == null){
+                        Toast.makeText(this, R.string.success_export, Toast.LENGTH_SHORT).show()
+                    } else {
+                        ColoredAlertDialogBuilder(this)
+                            .setTitle(R.string.error)
+                            .setMessage(getString(R.string.export_failed, failedItem))
+                            .setPositiveButton(R.string.ok, null)
+                            .show()
+                    }
+                }
+            }
+        }
+        unselectAll()
+    }
+    private val pickImportDirectory = registerForActivityResult(ActivityResultContracts.OpenDocumentTree()) { rootUri ->
+        rootUri?.let {
+            importDirectory(it, ::onImportComplete)
+        }
+    }
+
+    private fun onImportComplete(failedItem: String?, uris: List<Uri>) {
         if (failedItem == null){
             ColoredAlertDialogBuilder(this)
                 .setTitle(R.string.success_import)
@@ -125,26 +155,6 @@ class ExplorerActivity : BaseExplorerActivity() {
         }
         setCurrentPath(currentDirectoryPath)
     }
-        }
-    }
-    private val pickDirectory = registerForActivityResult(ActivityResultContracts.OpenDocumentTree()) { uri ->
-        if (uri != null) {
-            fileOperationService.exportFiles(uri, explorerAdapter.selectedItems.map { i -> explorerElements[i] }){ failedItem ->
-                runOnUiThread {
-                    if (failedItem == null){
-                        Toast.makeText(this, R.string.success_export, Toast.LENGTH_SHORT).show()
-                    } else {
-                        ColoredAlertDialogBuilder(this)
-                            .setTitle(R.string.error)
-                            .setMessage(getString(R.string.export_failed, failedItem))
-                            .setPositiveButton(R.string.ok, null)
-                            .show()
-                    }
-                }
-            }
-        }
-        unselectAll()
-    }
 
     override fun init() {
         binding = ActivityExplorerBinding.inflate(layoutInflater)
@@ -157,8 +167,9 @@ class ExplorerActivity : BaseExplorerActivity() {
                 adapter.items = listOf(
                     listOf("importFromOtherVolumes", R.string.import_from_other_volume, R.drawable.icon_transfert),
                     listOf("importFiles", R.string.import_files, R.drawable.icon_encrypt),
+                    listOf("importFolder", R.string.import_folder, R.drawable.icon_import_folder),
                     listOf("createFile", R.string.new_file, R.drawable.icon_file_unknown),
-                    listOf("createFolder", R.string.mkdir, R.drawable.icon_folder),
+                    listOf("createFolder", R.string.mkdir, R.drawable.icon_create_new_folder),
                     listOf("takePhoto", R.string.take_photo, R.drawable.icon_camera)
                 )
                 ColoredAlertDialogBuilder(this)
@@ -175,6 +186,10 @@ class ExplorerActivity : BaseExplorerActivity() {
                                 isStartingActivity = true
                                 pickFiles.launch(arrayOf("*/*"))
                             }
+                            "importFolder" -> {
+                                isStartingActivity = true
+                                pickImportDirectory.launch(null)
+                            }
                             "createFile" -> {
                                 val dialogEditTextView = layoutInflater.inflate(R.layout.dialog_edit_text, null)
                                 val dialogEditText = dialogEditTextView.findViewById<EditText>(R.id.dialog_edit_text)
@@ -381,7 +396,7 @@ class ExplorerActivity : BaseExplorerActivity() {
             }
             R.id.decrypt -> {
                 isStartingActivity = true
-                pickDirectory.launch(null)
+                pickExportDirectory.launch(null)
                 true
             }
             else -> super.onOptionsItemSelected(item)

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

@@ -3,7 +3,7 @@ package sushi.hardcore.droidfs.explorers
 import sushi.hardcore.droidfs.util.PathUtils
 import java.util.*
 
-class ExplorerElement(val name: String, val elementType: Short, var size: Long, mTime: Long, val parentPath: String) {
+class ExplorerElement(val name: String, val elementType: Short, var size: Long = -1, mTime: Long = -1, val parentPath: String) {
     val mTime = Date((mTime * 1000).toString().toLong())
     val fullPath: String = PathUtils.pathJoin(parentPath, name)
 

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

@@ -38,7 +38,7 @@ class FileOperationService : Service() {
         return binder
     }
 
-    private fun showNotification(message: Int, total: Int): FileOperationNotification {
+    private fun showNotification(message: Int, total: Int?): FileOperationNotification {
         ++lastNotificationId
         if (!::notificationManager.isInitialized){
             notificationManager = getSystemService(Context.NOTIFICATION_SERVICE) as NotificationManager
@@ -73,11 +73,18 @@ class FileOperationService : Service() {
         }
         notificationBuilder
                 .setContentTitle(getString(message))
-                .setContentText("0/$total")
                 .setSmallIcon(R.mipmap.icon_launcher)
                 .setOngoing(true)
-                .setProgress(total, 0, false)
                 .addAction(notificationAction.build())
+        if (total != null) {
+            notificationBuilder
+                .setContentText("0/$total")
+                .setProgress(total, 0, false)
+        } else {
+            notificationBuilder
+                .setContentText(getString(R.string.discovering_files))
+                .setProgress(0, 0, true)
+        }
         notifications[lastNotificationId] = false
         notificationManager.notify(lastNotificationId, notificationBuilder.build())
         return FileOperationNotification(notificationBuilder, lastNotificationId)
@@ -198,24 +205,23 @@ class FileOperationService : Service() {
         }.start()
     }
 
-    fun importFilesFromUris(items: ArrayList<OperationFile>, uris: List<Uri>, callback: (String?) -> Unit){
+    private fun importFilesFromUris(dstPaths: List<String>, uris: List<Uri>, reuseNotification: FileOperationNotification? = null, callback: (String?) -> Unit){
-        Thread {
+        val notification = reuseNotification ?: showNotification(R.string.file_op_import_msg, dstPaths.size)
-            val notification = showNotification(R.string.file_op_import_msg, items.size)
         var failedIndex = -1
-            for (i in 0 until items.size) {
+        for (i in dstPaths.indices) {
             if (notifications[notification.notificationId]!!){
                 cancelNotification(notification)
-                    return@Thread
+                return
             }
             try {
-                    if (!gocryptfsVolume.importFile(this, uris[i], items[i].dstPath!!)){
+                if (!gocryptfsVolume.importFile(this, uris[i], dstPaths[i])) {
                     failedIndex = i
                 }
             } catch (e: FileNotFoundException){
                 failedIndex = i
             }
             if (failedIndex == -1) {
-                    updateNotificationProgress(notification, i, items.size)
+                updateNotificationProgress(notification, i, dstPaths.size)
             } else {
                 cancelNotification(notification)
                 callback(uris[failedIndex].toString())
@@ -226,6 +232,76 @@ class FileOperationService : Service() {
             cancelNotification(notification)
             callback(null)
         }
+    }
+
+    fun importFilesFromUris(dstPaths: List<String>, uris: List<Uri>, callback: (String?) -> Unit) {
+        Thread {
+            importFilesFromUris(dstPaths, uris, null, callback)
+        }.start()
+    }
+
+    /**
+     * Map the content of an unencrypted directory to prepare its import
+     *
+     * Contents of dstFiles and srcUris, at the same index, will match each other
+     *
+     * @return false if cancelled early, true otherwise.
+     */
+    private fun recursiveMapDirectoryForImport(
+        rootSrcDir: DocumentFile,
+        rootDstPath: String,
+        dstFiles: ArrayList<String>,
+        srcUris: ArrayList<Uri>,
+        dstDirs: ArrayList<String>,
+        notification: FileOperationNotification
+    ): Boolean {
+        dstDirs.add(rootDstPath)
+        for (child in rootSrcDir.listFiles()) {
+            if (notifications[notification.notificationId]!!) {
+                cancelNotification(notification)
+                return false
+            }
+            child.name?.let { name ->
+                val subPath = PathUtils.pathJoin(rootDstPath, name)
+                if (child.isDirectory) {
+                    if (!recursiveMapDirectoryForImport(child, subPath, dstFiles, srcUris, dstDirs, notification)) {
+                        return false
+                    }
+                }
+                else if (child.isFile) {
+                    srcUris.add(child.uri)
+                    dstFiles.add(subPath)
+                }
+            }
+        }
+        return true
+    }
+
+    fun importDirectory(rootDstPath: String, rootSrcDir: DocumentFile, callback: (String?, List<Uri>) -> Unit) {
+        Thread {
+            val notification = showNotification(R.string.file_op_import_msg, null)
+
+            val dstFiles = arrayListOf<String>()
+            val srcUris = arrayListOf<Uri>()
+            val dstDirs = arrayListOf<String>()
+            if (!recursiveMapDirectoryForImport(rootSrcDir, rootDstPath, dstFiles, srcUris, dstDirs, notification)) {
+                return@Thread
+            }
+
+            updateNotificationProgress(notification, 0, dstDirs.size)
+
+            // create destination folders so the new files can use them
+            for (mkdir in dstDirs) {
+                if (notifications[notification.notificationId]!!) {
+                    cancelNotification(notification)
+                    return@Thread
+                }
+                gocryptfsVolume.mkdir(mkdir)
+            }
+
+            importFilesFromUris(dstFiles, srcUris, notification) { failedItem ->
+                callback(failedItem, srcUris)
+            }
         }.start()
     }
 

app/src/main/res/drawable/icon_create_new_folder.xml

@@ -0,0 +1,5 @@
+<vector android:height="24dp" android:tint="#FFFFFF"
+    android:viewportHeight="24" android:viewportWidth="24"
+    android:width="24dp" xmlns:android="http://schemas.android.com/apk/res/android">
+    <path android:fillColor="@android:color/white" android:pathData="M20,6h-8l-2,-2L4,4c-1.11,0 -1.99,0.89 -1.99,2L2,18c0,1.11 0.89,2 2,2h16c1.11,0 2,-0.89 2,-2L22,8c0,-1.11 -0.89,-2 -2,-2zM19,14h-3v3h-2v-3h-3v-2h3L14,9h2v3h3v2z"/>
+</vector>

app/src/main/res/drawable/icon_import_folder.xml

@@ -0,0 +1,5 @@
+<vector android:height="24dp" android:tint="#FFFFFF"
+    android:viewportHeight="24" android:viewportWidth="24"
+    android:width="24dp" xmlns:android="http://schemas.android.com/apk/res/android">
+    <path android:fillColor="@android:color/white" android:pathData="M20,6h-8l-2,-2L4,4c-1.1,0 -1.99,0.9 -1.99,2L2,18c0,1.1 0.9,2 2,2h16c1.1,0 2,-0.9 2,-2L22,8c0,-1.1 -0.9,-2 -2,-2zM20,18L4,18L4,8h16v10zM8,13.01l1.41,1.41L11,12.84L11,17h2v-4.16l1.59,1.59L16,13.01 12.01,9 8,13.01z"/>
+</vector>

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

@@ -11,6 +11,8 @@
     <string name="volume_path">Volume Path:</string>
     <string name="volume_name">Volume Name:</string>
     <string name="import_files">Import/Encrypt files</string>
+    <string name="import_folder">Import/Encrypt folder</string>
+    <string name="discovering_files">Discovering files…</string>
     <string name="mkdir">Create folder</string>
     <string name="dir_empty">Directory Empty</string>
     <string name="warning">Warning !</string>