Animal Crossing speak, morse encode/decode

commands/text-edit/binary.js

@@ -1,5 +1,6 @@
 const { Command } = require('discord.js-commando');
-const { pad } = require('../../util/Util');
+const { list, pad } = require('../../util/Util');
+const modes = ['encode', 'decode'];
 
 module.exports = class BinaryCommand extends Command {
 	constructor(client) {
@@ -9,6 +10,17 @@ module.exports = class BinaryCommand extends Command {
 			memberName: 'binary',
 			description: 'Converts text to binary.',
 			args: [
+				{
+					key: 'mode',
+					prompt: `Would you like to ${list(modes, 'or')}?`,
+					type: 'string',
+					format: `<${modes.join('|')}>`,
+					validate: mode => {
+						if (modes.includes(mode.toLowerCase())) return true;
+						return `Invalid mode, please enter either ${list(modes, 'or')}.`;
+					},
+					parse: mode => mode.toLowerCase()
+				},
 				{
 					key: 'text',
 					prompt: 'What text would you like to convert to binary?',
@@ -22,14 +34,19 @@ module.exports = class BinaryCommand extends Command {
 		});
 	}
 
-	run(msg, { text }) {
-		return msg.say(this.binary(text));
+	run(msg, { mode, text }) { // eslint-disable-line consistent-return
+		if (mode === 'encode') return msg.say(this.binary(text));
+		else if (mode === 'decode') return msg.say(this.unbinary(text));
 	}
 
 	binary(text) {
 		return text.split('').map(str => {
 			const converted = str.charCodeAt(0).toString(2);
 			return pad(converted, '00000000');
-		}).join('');
+		}).join(' ');
+	}
+
+	unbinary(text) {
+		return text.split(' ').map(str => String.fromCharCode(parseInt(str, 2))).join('');
 	}
 };