From d3dff302c545f8251cd6d6876e361f9fc7bd5fde Mon Sep 17 00:00:00 2001
From: hippoz <10706925-hippoz@users.noreply.gitlab.com>
Date: Tue, 26 Apr 2022 23:20:28 +0300
Subject: [PATCH] frontend: prevent accessing stores of channels that have not
 been loaded yet

---
 frontend/src/stores.js | 17 ++++++++++++++---
 1 file changed, 14 insertions(+), 3 deletions(-)

diff --git a/frontend/src/stores.js b/frontend/src/stores.js
index 7372201..d97feec 100644
--- a/frontend/src/stores.js
+++ b/frontend/src/stores.js
@@ -205,16 +205,27 @@ class MessagesStoreProvider {
             // we currently don't care about our own messages
             if (gateway.user && message.author_id === gateway.user.id)
                 return;
-            this.getStore(message.channel_id).addMessage(message);
+
+            const store = this.getStoreOrNull(message.channel_id);
+            if (store)
+                store.addMessage(message);
         });
         gateway.subscribe(GatewayEventType.MessageUpdate, (message) => {
-            this.getStore(message.channel_id).updateMessage(message);
+            const store = this.getStoreOrNull(message.channel_id);
+            if (store)
+                store.updateMessage(message);
         });
         gateway.subscribe(GatewayEventType.MessageDelete, (message) => {
-            this.getStore(message.channel_id).deleteMessage(message);
+            const store = this.getStoreOrNull(message.channel_id);
+            if (store)
+                store.deleteMessage(message);
         });
     }
 
+    getStoreOrNull(channelId) {
+        return this.storeByChannel.get(channelId);
+    }
+
     getStore(channelId) {
         if (!this.storeByChannel.get(channelId)) {
             const store = new MessageStore(channelId);