From 02a018462bd6d30d8b20eb4acce81238333c3640 Mon Sep 17 00:00:00 2001
From: AsamK <asamk@gmx.de>
Date: Wed, 6 Apr 2022 22:28:07 +0200
Subject: [PATCH] Prevent deleting a group locally if the user is still a
 member

Fixes #924
---
 lib/src/main/java/org/asamk/signal/manager/ManagerImpl.java | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/lib/src/main/java/org/asamk/signal/manager/ManagerImpl.java b/lib/src/main/java/org/asamk/signal/manager/ManagerImpl.java
index aa4752a2..45ec09f9 100644
--- a/lib/src/main/java/org/asamk/signal/manager/ManagerImpl.java
+++ b/lib/src/main/java/org/asamk/signal/manager/ManagerImpl.java
@@ -348,6 +348,11 @@ class ManagerImpl implements Manager {
 
     @Override
     public void deleteGroup(GroupId groupId) throws IOException {
+        final var group = context.getGroupHelper().getGroup(groupId);
+        if (group.isMember(account.getSelfRecipientId())) {
+            throw new IOException(
+                    "The local group information cannot be removed, as the user is still a member of the group");
+        }
         context.getGroupHelper().deleteGroup(groupId);
     }