Blur Command

commands/edit-image/blur.js

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+const Command = require('../../structures/Command');
+const { createCanvas, loadImage } = require('canvas');
+const request = require('node-superfetch');
+const stackBlur = require('stackblur-canvas');
+
+module.exports = class BlurCommand extends Command {
+	constructor(client) {
+		super(client, {
+			name: 'blur',
+			aliases: ['gaussian', 'gaussian-blur', 'stackblur'],
+			group: 'edit-image',
+			memberName: 'blur',
+			description: 'Draws an image or a user\'s avatar but blurred.',
+			throttling: {
+				usages: 1,
+				duration: 10
+			},
+			clientPermissions: ['ATTACH_FILES'],
+			args: [
+				{
+					key: 'radius',
+					prompt: 'What blur radius would you like to use?',
+					type: 'integer',
+					max: 180,
+					min: 1
+				},
+				{
+					key: 'image',
+					prompt: 'What image would you like to edit?',
+					type: 'image',
+					default: msg => msg.author.displayAvatarURL({ format: 'png', size: 512 })
+				}
+			]
+		});
+	}
+
+	async run(msg, { radius, 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);
+			stackBlur.canvasRGBA(canvas, 0, 0, canvas.width, canvas.height, radius);
+			const attachment = canvas.toBuffer();
+			if (Buffer.byteLength(attachment) > 8e+6) return msg.reply('Resulting image was above 8 MB.');
+			return msg.say({ files: [{ attachment, name: 'blur.png' }] });
+		} catch (err) {
+			return msg.reply(`Oh no, an error occurred: \`${err.message}\`. Try again later!`);
+		}
+	}
+};