allow custom rules on message update

src/bot/modules/command_handler.ts

@@ -31,6 +31,10 @@ let commands: Command[];
             .map(async file => await import(path.join(dirname, '..', 'commands', file)) as Command)
         )).map(c => (c as any).default)
 
+    client.on('message/update', async msg => {
+        checkCustomRules(msg, true);
+    });
+
     client.on('message', async msg => {
         logger.debug(`Message -> ${msg.content}`);
 

src/bot/modules/custom_rules/custom_rules.ts

@@ -16,6 +16,7 @@ async function checkCustomRules(message: Message, isEdit: boolean = false) {
     if (!rules) return;
 
     for (let rule of rules) {
+        if (!rule?.trigger?.on) continue;
         let onEdit = rule.trigger.on.includes('message/update');
         let onNew  = rule.trigger.on.includes('message/create');
 

src/struct/antispam/CustomRuleTrigger.ts

@@ -2,7 +2,6 @@ class CustomRuleTrigger {
     _id: string;
 
     // Which events this rule should apply to
-    // todo: message/update is not implemented
     on: ('message/create' | 'message/update')[];
 
     // Regex or string to match the content of the message against. If omitted, rule applies to every message