From 96fd4d32e7ef415c3875551c46f8d254f81973e9 Mon Sep 17 00:00:00 2001
From: Mrs4s <mrs4sxiaoshi@gmail.com>
Date: Thu, 2 Dec 2021 12:00:17 +0800
Subject: [PATCH] fix: nil pointer panic on guild event flow decoder

---
 client/guild_eventflow.go | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/client/guild_eventflow.go b/client/guild_eventflow.go
index fadf43e4..02275603 100644
--- a/client/guild_eventflow.go
+++ b/client/guild_eventflow.go
@@ -133,6 +133,15 @@ func (c *QQClient) processGuildEventBody(m *channel.ChannelMsgContent, eventBody
 		updateChanLock.Lock()
 		defer updateChanLock.Unlock()
 		oldInfo := guild.FindChannel(eventBody.ChangeChanInfo.GetChanId())
+		if oldInfo == nil {
+			info, err := c.GuildService.FetchChannelInfo(m.Head.RoutingHead.GetGuildId(), eventBody.ChangeChanInfo.GetChanId())
+			if err != nil {
+				c.Error("error to decode channel info updated event: fetch channel info failed: %v", err)
+				return
+			}
+			guild.Channels = append(guild.Channels, info)
+			oldInfo = info
+		}
 		if time.Now().Unix()-oldInfo.fetchTime <= 2 {
 			return
 		}