From 2acf11023af5934894dba9b1c6dfd028987c5024 Mon Sep 17 00:00:00 2001
From: SinTan1729 <sayantan.santra689@gmail.com>
Date: Fri, 26 Sep 2025 19:19:23 -0500
Subject: [PATCH] fix: Crash when trying to add to an empty playlist

---
 .../tempo/viewmodel/PlaylistChooserViewModel.java           | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/app/src/main/java/com/cappielloantonio/tempo/viewmodel/PlaylistChooserViewModel.java b/app/src/main/java/com/cappielloantonio/tempo/viewmodel/PlaylistChooserViewModel.java
index 82e0418b..89a948e4 100644
--- a/app/src/main/java/com/cappielloantonio/tempo/viewmodel/PlaylistChooserViewModel.java
+++ b/app/src/main/java/com/cappielloantonio/tempo/viewmodel/PlaylistChooserViewModel.java
@@ -38,8 +38,10 @@ public class PlaylistChooserViewModel extends AndroidViewModel {
         List<String> songIds = Lists.transform(toAdd, Child::getId);
         if (skipDuplicates) {
             playlistRepository.getPlaylistSongs(playlistId).observe(owner, playlistSongs -> {
-                List<String> playlistSongIds = Lists.transform(playlistSongs, Child::getId);
-                songIds.removeAll(playlistSongIds);
+                if (playlistSongs != null) {
+                    List<String> playlistSongIds = Lists.transform(playlistSongs, Child::getId);
+                    songIds.removeAll(playlistSongIds);
+                }
                 playlistRepository.addSongToPlaylist(playlistId, new ArrayList<>(songIds));
                 dialog.dismiss();
             });