From f1a1ef5984248ded3dfa114bb22b98e21ebe1de0 Mon Sep 17 00:00:00 2001
From: Yuzu <yuzu@kirameki.cafe>
Date: Sat, 18 Sep 2021 11:15:53 -0700
Subject: [PATCH] Add length check

---
 src/discord/Settings.ts | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)

diff --git a/src/discord/Settings.ts b/src/discord/Settings.ts
index 589e027..41d46f8 100644
--- a/src/discord/Settings.ts
+++ b/src/discord/Settings.ts
@@ -40,6 +40,20 @@ const EMBEDS = {
             user: (data instanceof Interaction) ? data.user : data.author
         });
     },
+    PREFIX_TOO_LONG: (data: Message | Interaction) => {
+        return makeErrorEmbed ({
+            title: 'Prefix too long',
+            description: `I bet you can't even remember that`,
+            user: (data instanceof Interaction) ? data.user : data.author
+        });
+    },
+    PREFIX_IS_MENTION: (data: Message | Interaction) => {
+        return makeErrorEmbed ({
+            title: 'Prefix cannot be mention of me',
+            description: `You can already call me by mentioning me. I got you covered, don't worry`,
+            user: (data instanceof Interaction) ? data.user : data.author
+        });
+    },
     PREFIX_UPDATED: (data: Message | Interaction, newPrefix: string) => {
         return makeSuccessEmbed ({
             title: 'Prefix updated',
@@ -95,6 +109,12 @@ export default class Settings {
                 if(!newPrefix)
                     return await sendMessageOrInteractionResponse(data, { embeds: [EMBEDS.NO_PREFIX_PROVIDED(data)] });
 
+                if(newPrefix.length > 100)
+                    return await sendMessageOrInteractionResponse(data, { embeds: [EMBEDS.PREFIX_TOO_LONG(data)] });
+
+                if(newPrefix.startsWith(`<@!${DiscordProvider.client.user?.id}>`))
+                    return await sendMessageOrInteractionResponse(data, { embeds: [EMBEDS.PREFIX_IS_MENTION(data)] });
+
                 let placeholder = await sendMessageOrInteractionResponse(data, { embeds: [EMBEDS.PROCESSING(data)] });
                 await Prisma.client.guild.update({ where: { id: data.guildId! }, data: { prefix: newPrefix }});
                 Cache.updateGuildCache(data.guildId!);