Updates notification (#3119)

Hi,

Like some default modules, I propose to send an `UPDATES` notification
in an array with the git information of these modules

This allows developers to create their own auto-update system (which
I've been using in my case since 3 years, with automatic things)

Of course, for security reasons `MagicMirror` is excluded

---------

Co-authored-by: bugsounet <bugsounet@bugsounet.fr>

CHANGELOG.md

@@ -15,6 +15,7 @@ _This release is scheduled to be released on 2023-07-01._
 - Added tests for serveronly
 - Set Timezone `Europe/Berlin` in unit tests (needed for new formatTime tests)
 - Added no-param-reassign eslint rule and fix warnings
+- updatenotification: Added `sendUpdatesNotifications` feature. Broadcast update with `UPDATES` notification to other modules
 
 ### Removed
 

modules/default/updatenotification/git_helper.js

@@ -9,6 +9,7 @@ const BASE_DIR = path.normalize(`${__dirname}/../../../`);
 class GitHelper {
 	constructor() {
 		this.gitRepos = [];
+		this.gitResultList = [];
 	}
 
 	getRefRegex(branch) {
@@ -171,21 +172,38 @@ class GitHelper {
 	}
 
 	async getRepos() {
-		const gitResultList = [];
+		this.gitResultList = [];
 
 		for (const repo of this.gitRepos) {
 			try {
 				const gitInfo = await this.getRepoInfo(repo);
 
 				if (gitInfo) {
-					gitResultList.push(gitInfo);
+					this.gitResultList.push(gitInfo);
 				}
 			} catch (e) {
 				Log.error(`Failed to retrieve repo info for ${repo.module}: ${e}`);
 			}
 		}
 
-		return gitResultList;
+		return this.gitResultList;
+	}
+
+	async checkUpdates() {
+		var updates = [];
+
+		const allRepos = await this.gitResultList.map((module) => {
+			return new Promise((resolve) => {
+				if (module.behind > 0 && module.module !== "MagicMirror") {
+					Log.info(`Update found for module: ${module.module}`);
+					updates.push(module);
+				}
+				resolve(module);
+			});
+		});
+		await Promise.all(allRepos);
+
+		return updates;
 	}
 }
 

modules/default/updatenotification/node_helper.js

@@ -44,6 +44,11 @@ module.exports = NodeHelper.create({
 			this.sendSocketNotification("STATUS", repo);
 		}
 
+		if (this.config.sendUpdatesNotifications) {
+			const updates = await this.gitHelper.checkUpdates();
+			if (updates.length) this.sendSocketNotification("UPDATES", updates);
+		}
+
 		this.scheduleNextFetch(this.config.updateInterval);
 	},
 

modules/default/updatenotification/updatenotification.js

@@ -8,7 +8,8 @@ Module.register("updatenotification", {
 	defaults: {
 		updateInterval: 10 * 60 * 1000, // every 10 minutes
 		refreshInterval: 24 * 60 * 60 * 1000, // one day
-		ignoreModules: []
+		ignoreModules: [],
+		sendUpdatesNotifications: false
 	},
 
 	suspended: false,
@@ -40,8 +41,13 @@ Module.register("updatenotification", {
 	},
 
 	socketNotificationReceived(notification, payload) {
-		if (notification === "STATUS") {
+		switch (notification) {
-			this.updateUI(payload);
+			case "STATUS":
+				this.updateUI(payload);
+				break;
+			case "UPDATES":
+				this.sendNotification("UPDATES", payload);
+				break;
 		}
 	},