Reduce cooldown and truncate title/description (Brexbot#208)

* Truncate embed title and description

* Reduce command cooldown to 30 seconds

src/commands/ask.ts

@@ -10,7 +10,7 @@ import { Discord, Slash, SlashChoice, SlashOption } from 'discordx'
 const COMMAND_NAME = 'ask'
 const COMMAND_DESC = 'Ask a question to Wolfram Alpha'
 
-const COOLDOWN_MILLISECONDS = 3 * 60 * 1000
+const COOLDOWN_MILLISECONDS = 30 * 1000
 
 @Discord()
 class Ask {
@@ -56,8 +56,8 @@ class Ask {
       const capitalizedAnswer = answer.charAt(0).toUpperCase() + answer.slice(1)
       const embed = new EmbedBuilder()
         .setColor('#FBAB00') // MasterMind's color
-        .setTitle(escapeMarkdown(question))
-        .setDescription(capitalizedAnswer)
+        .setTitle(truncate(escapeMarkdown(question).trim(), 256))
+        .setDescription(truncate(capitalizedAnswer.trim(), 4096))
 
       return await interaction.reply({ embeds: [embed] })
     } catch (err) {
@@ -106,3 +106,11 @@ class Ask {
     return null
   }
 }
+
+function truncate(text: string, maxLength: number): string {
+  if (text.length <= maxLength) {
+    return text
+  }
+
+  return text.substring(0, maxLength - 3).trim() + '...'
+}