GIF Fire Command

commands/edit-avatar/fire.js

@@ -0,0 +1,72 @@
+const Command = require('../../structures/Command');
+const { createCanvas, loadImage } = require('canvas');
+const GIFEncoder = require('gifencoder');
+const request = require('node-superfetch');
+const path = require('path');
+const { streamToArray } = require('../../util/Util');
+const { drawImageWithTint } = require('../../util/Canvas');
+const frameCount = 31;
+
+module.exports = class FireCommand extends Command {
+	constructor(client) {
+		super(client, {
+			name: 'fire',
+			aliases: ['hell', 'burn'],
+			group: 'edit-avatar',
+			memberName: 'fire',
+			description: 'Burns a user\'s avatar.',
+			throttling: {
+				usages: 1,
+				duration: 10
+			},
+			clientPermissions: ['ATTACH_FILES'],
+			credit: [
+				{
+					name: 'LowGif',
+					url: 'http://www.lowgif.com/',
+					reason: 'Images',
+					reasonURL: 'http://www.lowgif.com/43360ebce9150f23.html'
+				}
+			],
+			args: [
+				{
+					key: 'user',
+					prompt: 'Which user would you like to edit the avatar of?',
+					type: 'user',
+					default: msg => msg.author
+				},
+			]
+		});
+	}
+
+	async run(msg, { user }) {
+		const avatarURL = user.displayAvatarURL({ format: 'png', size: 512 });
+		try {
+			const { body } = await request.get(avatarURL);
+			const avatar = await loadImage(body);
+			const encoder = new GIFEncoder(avatar.width, avatar.height);
+			const canvas = createCanvas(avatar.width, avatar.height);
+			const ctx = canvas.getContext('2d');
+			const stream = encoder.createReadStream();
+			encoder.start();
+			encoder.setRepeat(0);
+			encoder.setDelay(4);
+			encoder.setQuality(200);
+			const ratio = avatar.width / avatar.height;
+			const height = Math.round(avatar.width / ratio);
+			for (let i = 0; i < frameCount; i += 2) {
+				const frameID = `frame-${i.toString.padStart(2, '0')}.gif`;
+				const frame = await loadImage(path.join(__dirname, '..', '..', 'assets', 'images', 'fire', frameID));
+				drawImageWithTint(ctx, avatar, '#fc671e', 0, 0);
+				ctx.drawImage(frame, 0, avatar.height - height, avatar.width, height);
+				encoder.addFrame(ctx);
+				encoder.addFrame(ctx);
+			}
+			encoder.finish();
+			const buffer = await streamToArray(stream);
+			return msg.say({ files: [{ attachment: Buffer.concat(buffer), name: 'fire.gif' }] });
+		} catch (err) {
+			return msg.reply(`Oh no, an error occurred: \`${err.message}\`. Try again later!`);
+		}
+	}
+};