Optionally disable chat rate limiter and add optional chat slur/language filter (#3681)

* feat(chat): basic profanity filter. For #3139

* feat(chat): add setting for disabling chat spam protection. Closes #3523

* feat(chat): wire up the new chat slur filter to admin and chat. Closes #3139

core/data/config.go

@@ -59,6 +59,8 @@ const (
 	suggestedUsernamesKey           = "suggested_usernames"
 	chatJoinMessagesEnabledKey      = "chat_join_messages_enabled"
 	chatEstablishedUsersOnlyModeKey = "chat_established_users_only_mode"
+	chatSpamProtectionEnabledKey    = "chat_spam_protection_enabled"
+	chatSlurFilterEnabledKey        = "chat_slur_filter_enabled"
 	notificationsEnabledKey         = "notifications_enabled"
 	discordConfigurationKey         = "discord_configuration"
 	browserPushConfigurationKey     = "browser_push_configuration"
@@ -528,6 +530,36 @@ func GetChatEstbalishedUsersOnlyMode() bool {
 	return false
 }
 
+// SetChatSpamProtectionEnabled will enable chat spam protection if set to true.
+func SetChatSpamProtectionEnabled(enabled bool) error {
+	return _datastore.SetBool(chatSpamProtectionEnabledKey, enabled)
+}
+
+// GetChatSpamProtectionEnabled will return if chat spam protection is enabled.
+func GetChatSpamProtectionEnabled() bool {
+	enabled, err := _datastore.GetBool(chatSpamProtectionEnabledKey)
+	if err == nil {
+		return enabled
+	}
+
+	return true
+}
+
+// SetChatSlurFilterEnabled will enable the chat slur filter.
+func SetChatSlurFilterEnabled(enabled bool) error {
+	return _datastore.SetBool(chatSlurFilterEnabledKey, enabled)
+}
+
+// GetChatSlurFilterEnabled will return if the chat slur filter is enabled.
+func GetChatSlurFilterEnabled() bool {
+	enabled, err := _datastore.GetBool(chatSlurFilterEnabledKey)
+	if err == nil {
+		return enabled
+	}
+
+	return false
+}
+
 // GetExternalActions will return the registered external actions.
 func GetExternalActions() []models.ExternalAction {
 	configEntry, err := _datastore.Get(externalActionsKey)