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commands/random/math.js

@@ -0,0 +1,39 @@
+const { Command } = require('discord.js-commando');
+const math = require('mathjs');
+
+module.exports = class MathCommand extends Command {
+    constructor(client) {
+        super(client, {
+            name: 'math',
+            aliases: [
+                'add',
+                'subtract',
+                'multiply',
+                'divide'
+            ],
+            group: 'random',
+            memberName: 'math',
+            description: 'Does Math (;math 2 + 2)',
+            examples: [';math 2 + 2'],
+            args: [{
+                key: 'expression',
+                prompt: 'What do you want to answer?',
+                type: 'string'
+            }]
+        });
+    }
+
+    run(message, args) {
+        if (message.channel.type !== 'dm') {
+            if (!message.channel.permissionsFor(this.client.user).hasPermission(['SEND_MESSAGES', 'READ_MESSAGES'])) return;
+        }
+        const expression = args.expression;
+        try {
+            const solved = math.eval(expression);
+            return message.say(solved).catch(() => message.say(':x: Error! Invalid statement!'));
+        }
+        catch (err) {
+            return message.say(':x: Error! Invalid statement!');
+        }
+    }
+};