Aspect Ratio Command

commands/analyze/aspect-ratio.js

@@ -0,0 +1,55 @@
+const Command = require('../../structures/Command');
+const { loadImage } = require('canvas');
+const request = require('node-superfetch');
+
+module.exports = class AspectRatioCommand extends Command {
+	constructor(client) {
+		super(client, {
+			name: 'aspect-ratio',
+			aliases: ['aspect', 'ratio'],
+			group: 'analyze',
+			memberName: 'aspect-ratio',
+			description: 'Determines an image\'s aspect ratio.',
+			throttling: {
+				usages: 2,
+				duration: 10
+			},
+			args: [
+				{
+					key: 'image',
+					prompt: 'What image would you like to get the aspect ratio of?',
+					type: 'image-or-avatar'
+				}
+			]
+		});
+	}
+
+	async run(msg, { image }) {
+		try {
+			const { body } = await request.get(image);
+			const data = await loadImage(body);
+			return msg.reply(`This image has an aspect ratio of **${this.ratio(data.width, data.height)}**.`);
+		} catch (err) {
+			return msg.reply(`Oh no, an error occurred: \`${err.message}\`. Try again later!`);
+		}
+	}
+
+	gcd(a, b) {
+		if (b > a) {
+			const temp = a;
+			a = b;
+			b = temp;
+		}
+		while (b !== 0) {
+			const m = a % b;
+			a = b;
+			b = m;
+		}
+		return a;
+	}
+
+	ratio(x, y) {
+		const c = this.gcd(x, y);
+		return `${x / c}:${y / c}`;
+	}
+};