reset settings option

app/src/main/java/com/github/libretube/dialogs/PlaylistOptionsDialog.kt

@@ -5,6 +5,7 @@ import android.content.Context
 import android.os.Bundle
 import android.util.Log
 import android.widget.ArrayAdapter
+import android.widget.Toast
 import androidx.fragment.app.DialogFragment
 import com.github.libretube.R
 import com.github.libretube.obj.PlaylistId
@@ -44,8 +45,16 @@ class PlaylistOptionsDialog(
                     0 -> {
                         val sharedPref =
                             context?.getSharedPreferences("token", Context.MODE_PRIVATE)
-                        val token = sharedPref?.getString("token", "")!!
-                        importPlaylist(token, playlistId)
+                        val token = sharedPref?.getString("token", "")
+                        if (token != "") {
+                            importPlaylist(token!!, playlistId)
+                        } else {
+                            Toast.makeText(
+                                context,
+                                R.string.login_first,
+                                Toast.LENGTH_SHORT
+                            ).show()
+                        }
                     }
                     // share the playlist
                     1 -> {

app/src/main/java/com/github/libretube/preferences/AdvancedSettings.kt

@@ -1,11 +1,16 @@
 package com.github.libretube.preferences
 
+import android.content.Context
 import android.os.Bundle
 import android.widget.TextView
 import androidx.preference.Preference
 import androidx.preference.PreferenceFragmentCompat
 import androidx.preference.PreferenceManager
 import com.github.libretube.R
+import com.github.libretube.requireMainActivityRestart
+import com.github.libretube.util.ThemeHelper
+import com.google.android.material.dialog.MaterialAlertDialogBuilder
+import org.chromium.base.CommandLine.reset
 
 class AdvancedSettings : PreferenceFragmentCompat() {
     val TAG = "AdvancedSettings"
@@ -23,5 +28,33 @@ class AdvancedSettings : PreferenceFragmentCompat() {
             sharedPreferences.edit().remove("search_history").commit()
             true
         }
+
+        val resetSettings = findPreference<Preference>("reset_settings")
+        resetSettings?.setOnPreferenceClickListener {
+            showResetDialog()
+            true
+        }
+    }
+
+    private fun showResetDialog() {
+        MaterialAlertDialogBuilder(requireContext())
+            .setPositiveButton(R.string.reset) { _, _ ->
+                // clear default preferences
+                val sharedPreferences =
+                    PreferenceManager.getDefaultSharedPreferences(requireContext())
+                sharedPreferences.edit().clear().commit()
+
+                // clear login token
+                val sharedPrefToken =
+                    context?.getSharedPreferences("token", Context.MODE_PRIVATE)
+                sharedPrefToken?.edit()?.clear()?.commit()
+
+                requireMainActivityRestart = true
+                activity?.recreate()
+            }
+            .setNegativeButton(getString(R.string.cancel)) { _, _ -> }
+            .setTitle(R.string.reset)
+            .setMessage(R.string.reset_message)
+            .show()
     }
 }

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

@@ -0,0 +1,10 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:tint="?android:attr/colorControlNormal"
+    android:viewportWidth="459"
+    android:viewportHeight="459">
+    <path
+        android:fillColor="#FF000000"
+        android:pathData="M229.5,0C102.75,0 0,102.75 0,229.5S102.75,459 229.5,459S459,356.25 459,229.5S356.25,0 229.5,0zM307.11,271.63c9.8,9.8 9.8,25.68 0,35.48c-4.9,4.9 -11.32,7.35 -17.74,7.35c-6.42,0 -12.84,-2.45 -17.74,-7.35L229.5,264.98l-42.13,42.13c-4.9,4.9 -11.32,7.35 -17.74,7.35c-6.42,0 -12.84,-2.45 -17.74,-7.35c-9.8,-9.8 -9.8,-25.68 0,-35.48l42.13,-42.13l-42.13,-42.13c-9.8,-9.8 -9.8,-25.68 0,-35.48s25.68,-9.8 35.48,0l42.13,42.13l42.13,-42.13c9.8,-9.8 25.68,-9.8 35.48,0c9.8,9.8 9.8,25.68 0,35.48l-42.13,42.13L307.11,271.63z" />
+</vector>

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

@@ -201,4 +201,6 @@
     <string name="pauseOnScreenOff_summary">Pause the player when the screen is turned off.</string>
     <string name="autoplay_summary">Automatically play the next video when the current is finished.</string>
     <string name="clonePlaylist">Clone playlist</string>
+    <string name="reset">Restore defaults</string>
+    <string name="reset_message">Are you sure you want to reset all the apps settings to its default?</string>
 </resources>

app/src/main/res/xml/advanced_settings.xml

@@ -46,4 +46,13 @@
 
     </PreferenceCategory>
 
+    <PreferenceCategory>
+
+        <Preference
+            android:icon="@drawable/ic_reset"
+            app:key="reset_settings"
+            app:title="@string/reset" />
+
+    </PreferenceCategory>
+
 </PreferenceScreen>