From 1076dc5521773ceae06e9d446b0f6c78577b2fac Mon Sep 17 00:00:00 2001
From: ScarletRedMan <terentev.andrey.2002@gmail.com>
Date: Fri, 15 Mar 2024 00:55:29 +0700
Subject: [PATCH] Fixed NullPointerException

---
 .../picker/repository/impl/UserRepositoryImpl.java          | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/server/src/main/java/ru/dragonestia/picker/repository/impl/UserRepositoryImpl.java b/server/src/main/java/ru/dragonestia/picker/repository/impl/UserRepositoryImpl.java
index 83c5046..2860606 100644
--- a/server/src/main/java/ru/dragonestia/picker/repository/impl/UserRepositoryImpl.java
+++ b/server/src/main/java/ru/dragonestia/picker/repository/impl/UserRepositoryImpl.java
@@ -116,7 +116,11 @@ public class UserRepositoryImpl implements UserRepository {
     public void onRemoveRoom(Room room) {
         lock.writeLock().lock();
         try {
-            roomUsers.remove(new NodeRoomPath(room.getNodeIdentifier(), room.getIdentifier())).forEach(user -> {
+            var users = roomUsers.remove(new NodeRoomPath(room.getNodeIdentifier(), room.getIdentifier()));
+
+            if (users == null) return;
+
+            users.forEach(user -> {
                 var set = usersMap.getOrDefault(user, new HashSet<>());
                 set.remove(room);