From a4115c57b85ee1cb60dba1b4cf0e4d8e61b50426 Mon Sep 17 00:00:00 2001
From: Dragon Fire <danielbodendahl@gmail.com>
Date: Fri, 29 Jan 2021 20:54:06 -0500
Subject: [PATCH] Motion Blur Command

---
 README.md                          |  3 +-
 commands/edit-image/motion-blur.js | 44 ++++++++++++++++++++++++++++++
 package.json                       |  2 +-
 util/Canvas.js                     |  8 ++++++
 4 files changed, 55 insertions(+), 2 deletions(-)
 create mode 100644 commands/edit-image/motion-blur.js

diff --git a/README.md b/README.md
index a6ba9705..5cf3e8c8 100644
--- a/README.md
+++ b/README.md
@@ -261,7 +261,7 @@ in the appropriate channel's topic to use it.
 
 ## Commands
 
-Total: 585
+Total: 586
 
 ### Utility:
 
@@ -682,6 +682,7 @@ Total: 585
 * **liquid-rescale:** Draws an image or a user's avatar but with liquid rescale from ImageMagick.
 * **minecraft-skin:** Sends the Minecraft skin for a user.
 * **mirror:** Draws an image or a user's avatar but mirrored on the X/Y axis (or both).
+* **motion-blur:** Draws an image or a user's avatar with motion blur.
 * **needs-more-jpeg:** Draws an image or a user's avatar as a low quality JPEG.
 * **newspaper:** Creates a fake newspaper with the headline and body of your choice.
 * **noise:** Draws an image or a user's avatar but with noise.
diff --git a/commands/edit-image/motion-blur.js b/commands/edit-image/motion-blur.js
new file mode 100644
index 00000000..5a8029c1
--- /dev/null
+++ b/commands/edit-image/motion-blur.js
@@ -0,0 +1,44 @@
+const Command = require('../../structures/Command');
+const { createCanvas, loadImage } = require('canvas');
+const request = require('node-superfetch');
+const { motionBlur } = require('../../util/Canvas');
+
+module.exports = class MotionBlurCommand extends Command {
+	constructor(client) {
+		super(client, {
+			name: 'motion-blur',
+			aliases: ['m-blur', 'motion'],
+			group: 'edit-image',
+			memberName: 'motion-blur',
+			description: 'Draws an image or a user\'s avatar with motion blur.',
+			throttling: {
+				usages: 1,
+				duration: 10
+			},
+			clientPermissions: ['ATTACH_FILES'],
+			args: [
+				{
+					key: 'image',
+					prompt: 'What image would you like to edit?',
+					type: 'image',
+					default: msg => msg.author.displayAvatarURL({ format: 'png', size: 512 })
+				}
+			]
+		});
+	}
+
+	async run(msg, { 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');
+			motionBlur(ctx, data, 0, 0, data.width, data.height);
+			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: 'motion-blur.png' }] });
+		} catch (err) {
+			return msg.reply(`Oh no, an error occurred: \`${err.message}\`. Try again later!`);
+		}
+	}
+};
diff --git a/package.json b/package.json
index 338b640c..276ce12c 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
 	"name": "xiao",
-	"version": "128.0.2",
+	"version": "128.1.0",
 	"description": "Your personal server companion.",
 	"main": "Xiao.js",
 	"scripts": {
diff --git a/util/Canvas.js b/util/Canvas.js
index 1e6ddb6e..be361607 100644
--- a/util/Canvas.js
+++ b/util/Canvas.js
@@ -125,6 +125,13 @@ module.exports = class CanvasUtil {
 		return ctx;
 	}
 
+	static motionBlur(ctx, image, x, y, width, height) {
+		ctx.globalAlpha = 0.1;
+		for (let i = 0; i < 10; ++i) ctx.drawImage(image, x, y + i, width, height);
+		ctx.globalAlpha = 1;
+		return ctx;
+	}
+
 	static hasAlpha(image) {
 		const canvas = createCanvas(image.width, image.height);
 		const ctx = canvas.getContext('2d');
@@ -148,6 +155,7 @@ module.exports = class CanvasUtil {
 		ctx.fillRect(x, y, width, height);
 		ctx.fillStyle = fillStyle;
 		ctx.globalAlpha = globalAlpha;
+		return ctx;
 	}
 
 	static shortenText(ctx, text, maxWidth) {