Add hifi updater checker

console/src/main.js

@@ -4,6 +4,8 @@ const electron = require('electron');
 const app = electron.app;  // Module to control application life.
 const BrowserWindow = electron.BrowserWindow;
 
+const notifier = require('node-notifier');
+const util = require('util');
 const dialog = electron.dialog;
 const Menu = require('menu');
 const Tray = require('tray');
@@ -20,6 +22,8 @@ const request = require('request');
 const progress = require('request-progress');
 const osHomeDir = require('os-homedir');
 
+const updater = require('./modules/hf-updater.js');
+
 const Config = require('./modules/config').Config;
 
 const hfprocess = require('./modules/hf-process.js');
@@ -565,6 +569,35 @@ app.on('ready', function() {
         tray.popUpContextMenu(tray.menu);
     });
 
+    // if (buildInfo.releaseType == 'PRODUCTION') {
+    if (true) { // TODO: remove, uncomment line above
+        var currentVersion = null;
+        try {
+            currentVersion = parseInt(buildInfo.buildIdentifier);
+        } catch (e) {
+        }
+        currentVersion = 0; // TODO: remove
+
+        if (currentVersion !== null) {
+            const CHECK_FOR_UPDATES_INTERVAL_SECONDS = 20;
+            const updateChecker = new updater.UpdateChecker(currentVersion, CHECK_FOR_UPDATES_INTERVAL_SECONDS);
+            updateChecker.on('update-available', function(latestVersion, url) {
+                notifier.notify({
+                    icon: trayIcon,
+                    title: 'An update is available!',
+                    message: 'High Fidelity version ' + latestVersion + ' is available',
+                    wait: true,
+                    url: url
+                });
+            });
+            notifier.on('click', function(notifierObject, options) {
+                console.log("Got click", options.url);
+                shell.openExternal(options.url);
+            });
+        }
+    }
+
+
     updateTrayMenu(ProcessGroupStates.STOPPED);
 
     maybeInstallDefaultContentSet(function() {

console/src/modules/hf-updater.js

@@ -0,0 +1,46 @@
+const request = require('request');
+const extend = require('extend');
+const util = require('util');
+const events = require('events');
+const cheerio = require('cheerio');
+const os = require('os');
+
+const platform = os.type() == 'Windows_NT' ? 'windows' : 'mac';
+
+const BUILDS_URL = 'https://highfidelity.com/builds.xml';
+
+function UpdateChecker(currentVersion, checkForUpdatesEveryXSeconds) {
+    this.currentVersion = currentVersion;
+    console.log('cur', currentVersion);
+
+    setInterval(this.checkForUpdates.bind(this), checkForUpdatesEveryXSeconds * 1000);
+    this.checkForUpdates();
+};
+util.inherits(UpdateChecker, events.EventEmitter);
+UpdateChecker.prototype = extend(UpdateChecker.prototype, {
+    checkForUpdates: function() {
+        console.log("Checking for updates");
+        request(BUILDS_URL, (error, response, body) => {
+            if (error) {
+                console.log("Error", error);
+                return;
+            }
+            if (response.statusCode == 200) {
+                try {
+                    var $ = cheerio.load(body, { xmlMode: true });
+                    const latestBuild = $('project[name="interface"] platform[name="' + platform + '"]').children().first();
+                    const latestVersion = parseInt(latestBuild.find('version').text());
+                    console.log("Latest version is:", latestVersion, this.currentVersion);
+                    if (latestVersion > this.currentVersion) {
+                        const url = latestBuild.find('url').text();
+                        this.emit('update-available', latestVersion, url);
+                    }
+                } catch (e) {
+                    console.warn("Error when checking for updates", e);
+                }
+            }
+        });
+    }
+});
+
+exports.UpdateChecker = UpdateChecker;