fix: current playlist doesn't close after deletion

Author: Bnyro

app/src/main/java/com/github/libretube/ui/dialogs/DeletePlaylistDialog.kt

@@ -41,11 +41,14 @@ class DeletePlaylistDialog : DialogFragment() {
                         context.toastFromMainDispatcher(
                             if (success) R.string.success else R.string.fail
                         )
-                        setFragmentResult(
-                            PlaylistOptionsBottomSheet.PLAYLIST_OPTIONS_REQUEST_KEY,
-                            bundleOf(IntentData.playlistTask to true)
-                        )
-                        withContext(Dispatchers.Main) { dismiss() }
+                        withContext(Dispatchers.Main) {
+                            dismiss()
+
+                            setFragmentResult(
+                                PlaylistOptionsBottomSheet.PLAYLIST_OPTIONS_REQUEST_KEY,
+                                bundleOf(IntentData.playlistTask to true)
+                            )
+                        }
                     }
                 }
             }

app/src/main/java/com/github/libretube/ui/fragments/LibraryFragment.kt

@@ -186,9 +186,10 @@ class LibraryFragment : DynamicLayoutManagerFragment(R.layout.fragment_library)
                 val binding = _binding ?: return@repeatOnLifecycle
                 binding.playlistRefresh.isRefreshing = false
 
-                if (playlists.isNotEmpty()) {
-                    showPlaylists(playlists)
-                } else {
+                // also update playlists recycler when the playlists are empty in order to remove
+                // playlists that were removed by the user
+                showPlaylists(playlists)
+                if (playlists.isEmpty()) {
                     binding.sortTV.isVisible = false
                     binding.nothingHere.isVisible = true
                 }

app/src/main/java/com/github/libretube/ui/fragments/PlaylistFragment.kt

@@ -14,6 +14,7 @@ import androidx.core.view.isVisible
 import androidx.core.view.updatePadding
 import androidx.fragment.app.activityViewModels
 import androidx.lifecycle.lifecycleScope
+import androidx.navigation.fragment.findNavController
 import androidx.navigation.fragment.navArgs
 import androidx.recyclerview.widget.GridLayoutManager
 import androidx.recyclerview.widget.RecyclerView
@@ -192,7 +193,7 @@ class PlaylistFragment : DynamicLayoutManagerFragment(R.layout.fragment_playlist
                     }
 
                     if (isPlaylistToBeDeleted) {
-                        // TODO move back: navController().popBackStack() crashes
+                        findNavController().popBackStack()
                         return@setFragmentResultListener
                     }
                 }