Add faces command

commands/analyze/faces.js

@@ -0,0 +1,45 @@
+const Command = require('../../framework/Command');
+const request = require('node-superfetch');
+const { createCanvas, loadImage } = require('canvas');
+
+module.exports = class FacesCommand extends Command {
+	constructor(client) {
+		super(client, {
+			name: 'faces',
+			aliases: ['face'],
+			group: 'analyze',
+			memberName: 'faces',
+			description: 'Shows all detected faces in an image.',
+			throttling: {
+				usages: 1,
+				duration: 60
+			},
+			args: [
+				{
+					key: 'image',
+					prompt: 'What face would you like to scan?',
+					type: 'image-or-avatar'
+				}
+			]
+		});
+	}
+
+	async run(msg, { image }) {
+		const imgData = await request.get(image);
+		const faces = await this.client.detectFaces(imgData.body);
+		if (!faces) return msg.reply('There are no faces in this image.');
+		if (faces === 'size') return msg.reply('This image is too large.');
+		const base = await loadImage(imgData.body);
+		const canvas = createCanvas(base.width, base.height);
+		const ctx = canvas.getContext('2d');
+		ctx.drawImage(base, 0, 0);
+		for (const face of faces) {
+			ctx.fillStyle = 'blue';
+			ctx.fillRect(face.box.xMin, face.box.yMax, 10, face.box.height);
+			ctx.fillRect(face.box.xMin, face.box.xMax, face.box.width, 10);
+			ctx.fillRect(face.box.yMin, face.box.yMax, face.box.width, 10);
+			ctx.fillRect(face.box.yMin, face.box.xMax, 10, face.box.height);
+		}
+		return msg.say({ files: [{ attachment: canvas.toBuffer(), name: 'faces.png' }] });
+	}
+};