Added version checking

server/package.json

@@ -7,6 +7,7 @@
   },
   "author": "QuantumStack",
   "dependencies": {
+    "axios": "^0.18.0",
     "body-parser": "^1.18.3",
     "cookie-parser": "~1.4.3",
     "debug": "~2.6.9",

server/routes/admin.js

@@ -4,6 +4,7 @@ const json2csv = require('json2csv').parse;
 const User = require('./../models/User');
 const Entry = require('./../models/Entry');
 const adminRequired = require('./../util/adminRequired');
+const version = require('./../util/version');
 
 const router = express.Router();
 
@@ -17,6 +18,7 @@ router.get('/lab', adminRequired, (req, res) => {
     course: process.env.CMULAB_COURSE,
     loc: process.env.CMULAB_LOC,
     isLab: true,
+    version: version(),
   });
 });
 
@@ -25,6 +27,7 @@ router.get('/csv', adminRequired, (req, res) => {
     course: process.env.CMULAB_COURSE,
     loc: process.env.CMULAB_LOC,
     isCsv: true,
+    version: version(),
   });
 });
 
@@ -33,6 +36,7 @@ router.get('/delete', adminRequired, (req, res) => {
     course: process.env.CMULAB_COURSE,
     loc: process.env.CMULAB_LOC,
     isDelete: true,
+    version: version(),
   });
 });
 
@@ -44,6 +48,7 @@ router.get('/users', adminRequired, (req, res, next) => {
       loc: process.env.CMULAB_LOC,
       isUsers: true,
       users,
+      version: version(),
     });
   });
 });

server/util/version.js

@@ -0,0 +1,22 @@
+const axios = require('axios');
+
+const current = 'v1.0';
+let latest;
+
+function check() {
+  axios.get('https://api.github.com/repos/QuantumStack/CMULab/releases')
+    .then((res) => {
+      latest = res.data[0].tag_name;
+    })
+    .catch(() => {
+      latest = current;
+    });
+}
+
+check();
+setInterval(check, 86400000);
+
+module.exports = () => {
+  if (current === latest) return { update: false };
+  return { update: true, latest, current };
+};

server/views/admin.hbs

@@ -1,6 +1,22 @@
 <br />
 <center><a href="/" class="tag is-primary is-large is-rounded">CMULab</a> &nbsp;<span class="title is-5"> {{course}}</span></center>
-<br />
+
+{{#if version.update}}
+	<section class="section">
+		<div class="container">
+			<article class="message is-warning">
+				<div class="message-header">
+					<p>CMULab Update Available!</p>
+				</div>
+				<div class="message-body">
+					QuantumStack has released a <strong>new version</strong> of CMULab. You are currently using {{version.current}}, but <strong>{{version.latest}}</strong> is now available. Please visit our <a href="https://github.com/QuantumStack/CMULab">GitHub repository</a> to download the update and deploy it onto your CMULab instance. Go to the <a href="https://github.com/QuantumStack/CMULab/releases/tag/{{version.latest}}">release page</a> to see what's new.
+				</div>
+			</article>
+		</div>
+	</section>
+{{else}}
+	<br />
+{{/if}}
 
 <div class="tabs is-centered is-boxed is-small">
 	<ul>