Convert Image Command

commands/edit-image/convert-image.js

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+const Command = require('../../structures/Command');
+const { createCanvas, loadImage } = require('canvas');
+const request = require('node-superfetch');
+const { list } = require('../../util/Util');
+const formats = {
+	jpg: 'image/jpeg',
+	jpeg: 'image/jpeg',
+	png: 'image/png'
+};
+
+module.exports = class ConvertImageCommand extends Command {
+	constructor(client) {
+		super(client, {
+			name: 'convert-image',
+			aliases: ['convert-img', 'image-convert', 'img-convert'],
+			group: 'edit-image',
+			memberName: 'convert-image',
+			description: 'Converts an image or user\'s avatar from one format to another.',
+			throttling: {
+				usages: 1,
+				duration: 10
+			},
+			clientPermissions: ['ATTACH_FILES'],
+			args: [
+				{
+					key: 'format',
+					prompt: `What format do you want to convert the image to? Either ${list(Object.keys(formats), 'or')}.`,
+					type: 'string',
+					oneOf: Object.keys(formats),
+					parse: format => format.toLowerCase()
+				},
+				{
+					key: 'image',
+					prompt: 'Which image would you like to edit?',
+					type: 'image',
+					default: msg => msg.author.displayAvatarURL({ format: 'png', size: 512 })
+				}
+			]
+		});
+	}
+
+	async run(msg, { format, image }) {
+		try {
+			const { body } = await request.get(image);
+			const data = await loadImage(body);
+			const canvas = createCanvas(data.width, data.height);
+			const ctx = canvas.getContext('2d');
+			ctx.drawImage(data, 0, 0);
+			return msg.say({ files: [{ attachment: canvas.toBuffer(formats[format]), name: `convert-image.${format}` }] });
+		} catch (err) {
+			return msg.reply(`Oh no, an error occurred: \`${err.message}\`. Try again later!`);
+		}
+	}
+};