Merge pull request #182 from marc31/add_download_file

download file from snapshot

app/src/main/java/de/lolhens/resticui/restic/ResticRepo.kt

@@ -151,4 +151,25 @@ abstract class ResticRepo(
             format.decodeFromString<ResticBackupSummary>(json)
         }
     }
+
+    fun restore(
+        snapshotId: ResticSnapshotId,
+        downloadPath: File,
+        file: ResticFile,
+    ): CompletableFuture<String> {
+
+        val args = listOf(
+            "--json",
+            "restore",
+            "${snapshotId.id}:${file.path.parent}",
+            "--target",
+            downloadPath.path.toString(),
+            "--include",
+            file.path.name
+        )
+
+        return restic(args).thenApply { (out, _) ->
+            out.joinToString("\n")
+        }
+    }
 }

app/src/main/java/de/lolhens/resticui/ui/settings/SettingsFragment.kt

@@ -8,7 +8,9 @@ import androidx.fragment.app.Fragment
 import de.lolhens.resticui.BackupManager
 import de.lolhens.resticui.databinding.FragmentSettingsBinding
 import de.lolhens.resticui.ui.InputDialogUtil
+import de.lolhens.resticui.util.DirectoryChooser
 import de.lolhens.resticui.util.HostnameUtil
+import android.content.Context
 
 class SettingsFragment : Fragment() {
     private var _binding: FragmentSettingsBinding? = null
@@ -55,6 +57,24 @@ class SettingsFragment : Fragment() {
                 }
         }
 
+        val context = requireContext()
+        val sharedPref = context.getSharedPreferences("MyPrefs", Context.MODE_PRIVATE)
+
+        binding.textDl.text = sharedPref?.getString("dl_path", "") ?: ""
+
+        val directoryChooser = DirectoryChooser.newInstance()
+
+        directoryChooser.register(this, requireContext()) { path ->
+            val editor = sharedPref?.edit()
+            editor?.putString("dl_path", path)
+            editor?.apply()
+            binding.textDl.text = path
+        }
+
+        binding.buttonDlEdit.setOnClickListener {
+            directoryChooser.openDialog()
+        }
+
         val restic = BackupManager.instance(requireContext()).restic
 
         binding.buttonHostnameEdit.setOnClickListener {

app/src/main/java/de/lolhens/resticui/ui/snapshot/SnapshotFragment.kt

@@ -3,20 +3,24 @@ package de.lolhens.resticui.ui.snapshot
 import android.app.AlertDialog
 import android.content.Context
 import android.os.Bundle
+import android.os.Handler
 import android.view.*
 import android.view.View.GONE
 import android.view.View.VISIBLE
 import android.widget.AdapterView
 import android.widget.BaseAdapter
 import android.widget.ListView
+import android.widget.ProgressBar
 import android.widget.TextView
+import android.widget.Toast
 import androidx.fragment.app.Fragment
 import androidx.recyclerview.widget.RecyclerView
 import de.lolhens.resticui.BackupManager
 import de.lolhens.resticui.R
 import de.lolhens.resticui.config.RepoConfigId
 import de.lolhens.resticui.databinding.FragmentSnapshotBinding
 import de.lolhens.resticui.restic.ResticFile
+import de.lolhens.resticui.restic.ResticRepo
 import de.lolhens.resticui.restic.ResticSnapshotId
 import de.lolhens.resticui.ui.Formatters
 import java.io.File
@@ -89,7 +93,10 @@ class SnapshotFragment : Fragment() {
                                                         it.path.relativeTo(snapshotRootPath).path.isNotEmpty()
                                             }
                                         ),
-                                        snapshotRootPath
+                                        resticRepo,
+                                        snapshotId,
+                                        snapshotRootPath,
+                                        binding.progressDl
                                     )
 
                                     binding.listFilesSnapshot.onItemClickListener =
@@ -161,7 +168,10 @@ class SnapshotFragment : Fragment() {
 class SnapshotFilesListAdapter(
     private val context: Context,
     private val files: ArrayList<ResticFile>,
-    private val rootPath: File
+    private val resticRepo: ResticRepo,
+    private val snapshotId: ResticSnapshotId,
+    private val rootPath: File,
+    private val progressDl: ProgressBar
 ) : BaseAdapter() {
     class ViewHolder(view: View) : RecyclerView.ViewHolder(view) {
         val pathNameText: TextView = view.findViewById(R.id.pathname)
@@ -218,6 +228,60 @@ class SnapshotFilesListAdapter(
         holder.pathNameText.text = pathString
         holder.fileDateText.text = dateString
 
+        // Add a click listener to initiate download
+        holder.itemView.setOnClickListener {
+            if (file.type == "file") {
+                // Path where the downloaded file will be saved on the device
+                val sharedPref = context.getSharedPreferences("MyPrefs", Context.MODE_PRIVATE)
+                val downloadPathString = sharedPref?.getString("dl_path", "") ?: ""
+                val downloadPath = File(downloadPathString)
+
+                if (!(downloadPath.exists() && downloadPath.isDirectory)) {
+                    AlertDialog.Builder(context)
+                        .setTitle(R.string.alert_download_file_title)
+                        .setMessage(R.string.alert_download_file_no_dest_dir)
+                        .setNegativeButton(android.R.string.cancel) { _, _ -> }
+                        .show()
+                } else {
+                    AlertDialog.Builder(context)
+                        .setTitle(R.string.alert_download_file_title)
+                        .setMessage(context.getString(R.string.alert_download_file_message, file.path.name, downloadPathString))
+                        .setPositiveButton(android.R.string.ok) { _, _ ->
+                            downloadFile(file, downloadPath)
+                        }
+                        .setNegativeButton(android.R.string.cancel) { _, _ -> }
+                        .show()
+                }
+            }
+        }
+
         return view
     }
+
+    // Function to handle file download
+    private fun downloadFile(file: ResticFile, downloadPath: File) {
+        progressDl.visibility = VISIBLE
+        resticRepo.restore(snapshotId, downloadPath, file)
+            .handle { content, throwable ->
+                val handler = Handler(context.mainLooper)
+                handler.post {
+                    if (content != null) {
+                        // Notify the user that the download is complete
+                        // You can use a Toast or other UI element to display this message
+                        showToast("File downloaded")
+                    } else {
+                        throwable?.printStackTrace()
+
+                        // Notify the user that an error occurred during download
+                        showToast("Failed to download")
+                    }
+                    progressDl.visibility = GONE
+                }
+        }
+    }
+
+    private fun showToast(message: String) {
+        Toast.makeText(context, message, Toast.LENGTH_LONG).show()
+    }
+
 }

app/src/main/res/layout/fragment_settings.xml

@@ -102,6 +102,51 @@
 
         </androidx.constraintlayout.widget.ConstraintLayout>
 
+        <androidx.constraintlayout.widget.ConstraintLayout
+            android:id="@+id/group_dl"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:layout_marginTop="16dp"
+            app:layout_constraintEnd_toEndOf="parent"
+            app:layout_constraintHorizontal_bias="0.0"
+            app:layout_constraintStart_toStartOf="parent"
+            app:layout_constraintTop_toBottomOf="@+id/group_dns">
+
+            <TextView
+                android:id="@+id/text_dl_description"
+                android:layout_width="0dp"
+                android:layout_height="wrap_content"
+                android:layout_marginStart="16dp"
+                android:layout_marginEnd="16dp"
+                android:text="Donwload Directory"
+                app:layout_constraintEnd_toEndOf="parent"
+                app:layout_constraintHorizontal_bias="1.0"
+                app:layout_constraintStart_toStartOf="parent"
+                app:layout_constraintTop_toTopOf="parent" />
+
+            <TextView
+                android:id="@+id/text_dl"
+                android:layout_width="0dp"
+                android:layout_height="wrap_content"
+                android:layout_marginStart="32dp"
+                android:layout_marginEnd="8dp"
+                android:textSize="20sp"
+                app:layout_constraintBottom_toBottomOf="@+id/button_dl_edit"
+                app:layout_constraintEnd_toStartOf="@+id/button_dl_edit"
+                app:layout_constraintStart_toStartOf="parent"
+                app:layout_constraintTop_toBottomOf="@+id/text_dl_description" />
+
+            <Button
+                android:id="@+id/button_dl_edit"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:layout_marginEnd="32dp"
+                android:text="Edit"
+                app:layout_constraintEnd_toEndOf="parent"
+                app:layout_constraintTop_toBottomOf="@+id/text_dl_description" />
+
+        </androidx.constraintlayout.widget.ConstraintLayout>
+
         <androidx.constraintlayout.widget.ConstraintLayout
             android:id="@+id/group_utils"
             android:layout_width="match_parent"
@@ -111,7 +156,7 @@
             app:layout_constraintBottom_toBottomOf="parent"
             app:layout_constraintEnd_toEndOf="parent"
             app:layout_constraintStart_toStartOf="parent"
-            app:layout_constraintTop_toBottomOf="@+id/group_dns">
+            app:layout_constraintTop_toBottomOf="@+id/group_dl">
 
             <TextView
                 android:id="@+id/text_utils_description"

app/src/main/res/layout/fragment_snapshot.xml

@@ -93,6 +93,17 @@
         app:layout_constraintStart_toStartOf="parent"
         app:layout_constraintTop_toBottomOf="@+id/progress_snapshot" />
 
+    <ProgressBar
+        android:id="@+id/progress_dl"
+        style="?android:attr/progressBarStyle"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_marginTop="8dp"
+        android:visibility="gone"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toBottomOf="@+id/progress_snapshot" />
+
     <TextView
         android:id="@+id/text_snapshot_id_long"
         android:layout_width="0dp"

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

@@ -35,6 +35,12 @@
     <string name="alert_backup_cancel_message">Do you want to cancel the Backup?</string>
     <string name="alert_delete_snapshot_title">Delete Snapshot</string>
     <string name="alert_delete_snapshot_message">Do you want to delete this Snapshot?</string>
+    <string name="alert_download_file_title">Download File</string>
+    <string name="alert_download_file_message">
+        Do you want to download this file: "%s"
+        here: "%s" ?
+    </string>
+    <string name="alert_download_file_no_dest_dir">Before proceeding, ensure that you have chosen a valid download folder in the settings.</string>
     <string name="notification_channel_backup">Restic Backup</string>
     <string name="notification_backup_title">Restic Backup</string>
     <string name="notification_backup_progress_message">Backup in Progress…</string>