Add check for outdated packages, and show on the help screen.

client/css/style.css

@@ -1932,12 +1932,14 @@ part/quit messages where we don't load previews (adds a blank line otherwise) */
 	content: "\f253"; /* https://fontawesome.com/icons/hourglass-end?style=solid */
 }
 
-#version-checker.new-version {
+#version-checker.new-version,
+#version-checker.new-packages {
 	color: #8a6d3b;
 	background-color: #fcf8e3;
 }
 
-#version-checker.new-version::before {
+#version-checker.new-version::before,
+#version-checker.new-packages::before {
 	content: "\f164"; /* https://fontawesome.com/icons/thumbs-up?style=solid */
 }
 

client/js/socket-events/changelog.js

@@ -29,6 +29,8 @@ socket.on("changelog", function(data) {
 
 	if (data.latest) {
 		status = "new-version";
+	} else if (data.packages) {
+		status = "new-packages";
 	} else if (data.current.changelog) {
 		status = "up-to-date";
 	} else {

client/views/version_checker.tpl

@@ -12,6 +12,12 @@
 			Read more on GitHub
 		</a>
 	</p>
+{{else equal status "new-packages"}}
+	<p>
+		The Lounge is up to date, but there are out of date packages
+		
+		Run <code>thelounge upgrade</code> on the server to upgrade packages.
+	</p>
 {{else equal status "up-to-date"}}
 	<p>
 		The Lounge is up to date!

src/command-line/index.js

@@ -60,6 +60,7 @@ if (!Helper.config.public && !Helper.config.ldap.enable) {
 require("./install");
 require("./uninstall");
 require("./upgrade");
+require("./outdated");
 
 // `parse` expects to be passed `process.argv`, but we need to remove to give it
 // a version of `argv` that does not contain options already parsed by

src/command-line/outdated.js

@@ -0,0 +1,27 @@
+"use strict";
+
+const program = require("commander");
+const Utils = require("./utils");
+const packageManager = require("../plugins/packages");
+const log = require("../log");
+
+program
+	.command("outdated")
+	.description("Check for any outdated packages")
+	.on("--help", Utils.extraHelp)
+	.action(async () => {
+		log.info("Checking for outdated packages");
+
+		await packageManager
+			.outdated(0)
+			.then((outdated) => {
+				if (outdated) {
+					log.info("There are outdated packages");
+				} else {
+					log.info("No outdated packages");
+				}
+			})
+			.catch(() => {
+				log.error("Error finding outdated packages.");
+			});
+	});

src/plugins/packages/index.js

@@ -7,13 +7,22 @@ const Helper = require("../../helper");
 const themes = require("./themes");
 const packageMap = new Map();
 const inputs = require("../inputs");
+const fs = require("fs");
+const Utils = require("../../command-line/utils");
 
 const stylesheets = [];
 
+const TIME_TO_LIVE = 15 * 60 * 1000; // 15 minutes, in milliseconds
+
+const cache = {
+	outdated: undefined,
+};
+
 module.exports = {
 	getStylesheets,
 	getPackage,
 	loadPackages,
+	outdated,
 };
 
 const packageApis = function(packageName) {
@@ -99,3 +108,46 @@ function loadPackages() {
 		);
 	}
 }
+
+async function outdated(cacheTimeout = TIME_TO_LIVE) {
+	if (cache.outdated !== undefined) {
+		return cache.outdated;
+	}
+
+	// Get paths to the location of packages directory
+	const packagesPath = Helper.getPackagesPath();
+	const packagesConfig = path.join(packagesPath, "package.json");
+	const argsList = [
+		"outdated",
+		"--latest",
+		"--json",
+		"--production",
+		"--ignore-scripts",
+		"--non-interactive",
+		"--cwd",
+		packagesPath,
+	];
+
+	// Check if the configuration file exists
+	if (!fs.existsSync(packagesConfig)) {
+		log.warn("There are no packages installed.");
+		return false;
+	}
+
+	// If we get an error from calling outdated and the code isn't 0, then there are no outdated packages
+	await Utils.executeYarnCommand(...argsList)
+		.then(() => updateOutdated(false))
+		.catch((code) => updateOutdated(code !== 0));
+
+	if (cacheTimeout > 0) {
+		setTimeout(() => {
+			delete cache.outdated;
+		}, cacheTimeout);
+	}
+
+	return cache.outdated;
+}
+
+function updateOutdated(outdatedPackages) {
+	cache.outdated = outdatedPackages;
+}

src/server.js

@@ -454,9 +454,13 @@ function initializeClient(socket, client, token, lastMessage) {
 		}
 	});
 
-	socket.on("changelog", async () => {
-		const data = await changelog.fetch();
-		socket.emit("changelog", data);
+	socket.on("changelog", () => {
+		Promise.all([changelog.fetch(), packages.outdated()]).then(
+			([changelogData, packageUpdate]) => {
+				changelogData.packages = packageUpdate;
+				socket.emit("changelog", changelogData);
+			}
+		);
 	});
 
 	socket.on("msg:preview:toggle", (data) => {