From 0685459edbd8fef352810f8ebd75513f5a43373b Mon Sep 17 00:00:00 2001
From: Dragon Fire <danielbodendahl@gmail.com>
Date: Tue, 15 Dec 2020 20:45:56 -0500
Subject: [PATCH] Dependency Update Command

---
 README.md                          |  4 +-
 commands/util/dependency-update.js | 68 ++++++++++++++++++++++++++++++
 package.json                       |  3 +-
 3 files changed, 73 insertions(+), 2 deletions(-)
 create mode 100644 commands/util/dependency-update.js

diff --git a/README.md b/README.md
index bf1c6568..b3db54b7 100644
--- a/README.md
+++ b/README.md
@@ -259,7 +259,7 @@ in the appropriate channel's topic to use it.
 
 ## Commands
 
-Total: 570
+Total: 571
 
 ### Utility:
 
@@ -284,6 +284,7 @@ Total: 570
 * **eval:** Executes JavaScript code. (Owner-Only)
 * **command-leaderboard-export:** Exports a command leaderboard JSON file. (Owner-Only)
 * **command-leaderboard-import:** Imports a command leaderboard JSON file. (Owner-Only)
+* **dependency-update:** Checks for dependency updates. (Owner-Only)
 * **exec:** Executes a command-line application. (Owner-Only)
 * **generate-commands:** Generates the commands list for Xiao's README. (Owner-Only)
 * **generate-credit:** Generates the credit list for Xiao's README. (Owner-Only)
@@ -1468,6 +1469,7 @@ here.
 - [NotAWeebDev](https://github.com/NotAWeebDev/)
 	* triggered ([Image](https://github.com/NotAWeebDev/Misaki/blob/2e44f9efb467028dcbae5a2c9f836d2e99860b85/assets/images/plate_triggered.png))
 - [npm](https://www.npmjs.com/)
+	* dependency-update (API)
 	* npm (API)
 - [Numbers API](http://numbersapi.com/)
 	* number-fact (Trivia API)
diff --git a/commands/util/dependency-update.js b/commands/util/dependency-update.js
new file mode 100644
index 00000000..907e1c05
--- /dev/null
+++ b/commands/util/dependency-update.js
@@ -0,0 +1,68 @@
+const Command = require('../../structures/Command');
+const request = require('node-superfetch');
+const semver = require('semver');
+const { stripIndents } = require('common-tags');
+const { dependencies, devDependencies } = require('../../package');
+
+module.exports = class DependencyUpdateCommand extends Command {
+	constructor(client) {
+		super(client, {
+			name: 'dependency-update',
+			aliases: ['dep-update', 'dependencies-update', 'npm-update'],
+			group: 'util',
+			memberName: 'dependency-update',
+			description: 'Checks for dependency updates.',
+			details: 'Only the bot owner(s) may use this command.',
+			ownerOnly: true,
+			guarded: true,
+			credit: [
+				{
+					name: 'npm',
+					url: 'https://www.npmjs.com/',
+					reason: 'API'
+				}
+			]
+		});
+	}
+
+	async run(msg) {
+		const needUpdate = [];
+		for (const [dep, ver] of Object.entries(dependencies)) {
+			const latest = this.fetchVersion(dep);
+			const clean = semver.clean(ver);
+			if (latest === clean) continue;
+			needUpdate.push({
+				name: dep,
+				oldVer: clean,
+				newVer: latest,
+				breaking: !semver.satisfies(clean, latest)
+			});
+		}
+		for (const [dep, ver] of Object.entries(devDependencies)) {
+			const latest = this.fetchVersion(dep);
+			const clean = semver.clean(ver);
+			if (latest === clean) continue;
+			needUpdate.push({
+				name: dep,
+				oldVer: clean,
+				newVer: latest,
+				breaking: !semver.satisfies(clean, latest)
+			});
+		}
+		if (!needUpdate.length) return msg.say('All packages are up to date.');
+		const updatesList = needUpdate.map(pkg => {
+			const breaking = pkg.breaking ? ' ⚠️' : '';
+			return `${pkg.name} (${pkg.oldVer} -> ${pkg.newVer})${breaking}`;
+		});
+		return msg.say(stripIndents`
+			__**Package Updates Available:**__
+			${updatesList.join('\n')}
+		`);
+	}
+
+	async fetchVersion(dependency) {
+		const { body } = await request.get(`https://registry.npmjs.com/${dependency}`);
+		if (body.time.unpublished) return null;
+		return body.versions[body['dist-tags'].latest];
+	}
+};
diff --git a/package.json b/package.json
index bc0e7dce..f7e61958 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
 	"name": "xiao",
-	"version": "124.0.0",
+	"version": "124.1.0",
 	"description": "Your personal server companion.",
 	"main": "Xiao.js",
 	"scripts": {
@@ -59,6 +59,7 @@
 		"pokersolver": "^2.1.4",
 		"random-js": "^2.1.0",
 		"rss-parser": "^3.10.0",
+		"semver": "^7.3.4",
 		"sherlockjs": "^1.4.0",
 		"stackblur-canvas": "^2.4.0",
 		"tesseract.js": "^2.1.4",