Add support to disable chat join messages. Closes #1582 (#1743)

core/chat/server.go

@@ -91,7 +91,7 @@ func (s *Server) Addclient(conn *websocket.Conn, user *user.User, accessToken st
 	}
 
 	// Do not send user re-joined broadcast message if they've been active within 5 minutes.
-	shouldSendJoinedMessages := true
+	shouldSendJoinedMessages := data.GetChatJoinMessagesEnabled()
 	if previouslyLastSeen, ok := _lastSeenCache[user.ID]; ok && time.Since(previouslyLastSeen) < time.Minute*5 {
 		shouldSendJoinedMessages = false
 	}

core/data/config.go

@@ -53,6 +53,7 @@ const (
 	federationShowEngagementKey  = "federation_show_engagement"
 	federationBlockedDomainsKey  = "federation_blocked_domains"
 	suggestedUsernamesKey        = "suggested_usernames"
+	chatJoinMessagesEnabledKey   = "chat_join_messages_enabled"
 )
 
 // GetExtraPageBodyContent will return the user-supplied body content.
@@ -754,3 +755,18 @@ func GetBlockedFederatedDomains() []string {
 
 	return strings.Split(domains, ",")
 }
+
+// SetChatJoinMessagesEnabled will set if chat join messages are enabled.
+func SetChatJoinMessagesEnabled(enabled bool) error {
+	return _datastore.SetBool(chatJoinMessagesEnabledKey, enabled)
+}
+
+// GetChatJoinMessagesEnabled will return if chat join messages are enabled.
+func GetChatJoinMessagesEnabled() bool {
+	enabled, err := _datastore.GetBool(chatJoinMessagesEnabledKey)
+	if err != nil {
+		return true
+	}
+
+	return enabled
+}