From d1112e4770c851a13dbf170c16fe287b5a65aea6 Mon Sep 17 00:00:00 2001
From: Bruce Thomas <burce.thomas@ably.com>
Date: Thu, 21 Jul 2022 17:28:35 +0100
Subject: [PATCH 1/3] Fixes to JWT server for related stepped tutorial

- repaced old logo with static asset
- replaced old UI with ably-ui like form
- updated JavaScript to ES6
- Added missing package.json
---
 README.md         |    2 +-
 css/style.css     |  228 +++------
 index.html        |   72 +--
 package-lock.json | 1230 +++++++++++++++++++++++++++++++++++++++++++++
 package.json      |   17 +
 server.js         |   87 ++--
 6 files changed, 1408 insertions(+), 228 deletions(-)
 create mode 100644 package-lock.json
 create mode 100644 package.json

diff --git a/README.md b/README.md
index 59cecc1d..2e651615 100644
--- a/README.md
+++ b/README.md
@@ -1,4 +1,4 @@
-[![Ably](https://s3.amazonaws.com/files.ably.io/logo-with-type.png)](https://www.ably.io)
+[![Ably](https://static.ably.dev/logo-h-black.svg?jwt-authentication-nodejs)](https://www.ably.com)
 
 ---
 
diff --git a/css/style.css b/css/style.css
index 7d5ca501..4191dc07 100644
--- a/css/style.css
+++ b/css/style.css
@@ -1,187 +1,99 @@
-html, body, div, span, applet, object, iframe,
-h1, h2, h3, h4, h5, h6, p, blockquote, pre,
-a, abbr, acronym, address, big, cite, code,
-del, dfn, em, img, ins, kbd, q, s, samp,
-small, strike, strong, sub, sup, tt, var,
-b, u, i, center,
-dl, dt, dd, ol, ul, li,
-fieldset, form, label, legend,
-table, caption, tbody, tfoot, thead, tr, th, td,
-article, aside, canvas, details, embed,
-figure, figcaption, footer, header, hgroup,
-menu, nav, output, ruby, section, summary,
-time, mark, audio, video {
-  margin: 0;
-  padding: 0;
-  border: 0;
-  font-size: 100%;
-  font: inherit;
-  vertical-align: baseline;
-}
-/*
- * Copyright (c) 2012-2013 Thibaut Courouble
- * http://www.cssflow.com
- *
- * Licensed under the MIT License:
- * http://www.opensource.org/licenses/mit-license.php
- */
- 
-article, aside, details, figcaption, figure,
-footer, header, hgroup, menu, nav, section {
+section {
   display: block;
 }
 
+html,
 body {
-  line-height: 1;
+  height: 100%;
 }
 
-ol, ul {
-  list-style: none;
+body {
+  font: 16px/20px sans-serif;
+  color: #404040;
+  background: #ffffff;
+  margin: 0;
+  padding: 0;
 }
 
-blockquote, q {
-  quotes: none;
+form {
+  padding: 1.1rem 1.6rem 1.6rem;
 }
 
-blockquote:before, blockquote:after,
-q:before, q:after {
-  content: '';
-  content: none;
+input {
+  display: block;
+  margin: 10px 0;
+  padding: 12px 16px;
+  width: 200px;
+  color: #222222;
+  background: #ebebeb;
+  border: 1px solid;
+  border-color: #c9c9c9;
+  border-radius: 2px;
+  font-size: 14px;
 }
 
-table {
-  border-collapse: collapse;
-  border-spacing: 0;
+button[type="submit"] {
+  margin-top: 32px;
+  background-color: #03020d;
+  border-radius: 6px;
+  font-size: 1rem;
+  font-weight: 500;
+  line-height: 1.125rem;
+  color: #ffffff;
+  padding: 0.9375rem 1.5rem;
+  border: 0;
+  font-weight: 700;
 }
 
-body {
-  font: 13px/20px 'Lucida Grande', Tahoma, Verdana, sans-serif;
-  color: #404040;
-  background:#F7BD42;
+button[type="submit"]:hover {
+  background: #ff5416;
 }
 
-.container {
-  margin: 80px auto;
-  width: 640px;
+.container::after {
+  content: "";
+  position: absolute;
+  z-index: 1;
+  top: 0;
+  left: 0;
+  font-size: 30px;
+  width: 100%;
+  height: 100%;
+  background-position: 40vw 30vh;
+  background-repeat: no-repeat;
+  background-image: url("data:image/svg+xml;charset=UTF-8,%3csvg width='552' height='552' viewBox='0 0 552 552' fill='none' xmlns='http://www.w3.org/2000/svg'%3e%3ccircle cx='276' cy='276' r='55' stroke='%23FF0000' stroke-width='2'/%3e%3ccircle cx='276' cy='276' r='127' stroke='%23FF0000' stroke-width='2'/%3e%3ccircle cx='276' cy='276' r='194' stroke='%23FF0000' stroke-width='2'/%3e%3ccircle cx='276' cy='276' r='274' stroke='%23FF0000' stroke-width='2'/%3e%3c/svg%3e ");
+  transform: scale(2);
+  bottom: 0;
+  right: 0;
+  margin: 0;
 }
 
 .login {
   position: relative;
-  margin: 0 auto;
-  padding: 20px 20px 20px;
-  width: 310px;
+  margin: auto;
+  padding: 0;
   background: white;
-  border-radius: 3px;
-  -webkit-box-shadow: 0 0 200px rgba(255, 255, 255, 0.5), 0 1px 2px rgba(0, 0, 0, 0.3);
-  box-shadow: 0 0 200px rgba(255, 255, 255, 0.5), 0 1px 2px rgba(0, 0, 0, 0.3);
-}
-.login:before {
-  content: '';
-  position: absolute;
-  top: -8px;
-  right: -8px;
-  bottom: -8px;
-  left: -8px;
-  z-index: -1;
-  background: rgba(0, 0, 0, 0.08);
-  border-radius: 4px;
+  border-radius: 2px;
+  box-shadow: 0 0 200px #72727255;
 }
+
 .login h1 {
-  margin: -20px -20px 21px;
-  line-height: 40px;
-  font-size: 15px;
-  font-weight: bold;
-  color: #555;
+  margin: 0;
+  padding: 1rem 0;
+  font-size: 1rem;
+  font-weight: 900;
+  color: #fff;
   text-align: center;
-  text-shadow: 0 1px white;
-  background: #f3f3f3;
-  border-bottom: 1px solid #cfcfcf;
-  border-radius: 3px 3px 0 0;
-  background-image: -webkit-linear-gradient(top, whiteffd, #eef2f5);
-  background-image: -moz-linear-gradient(top, whiteffd, #eef2f5);
-  background-image: -o-linear-gradient(top, whiteffd, #eef2f5);
-  background-image: linear-gradient(to bottom, whiteffd, #eef2f5);
-  -webkit-box-shadow: 0 1px whitesmoke;
-  box-shadow: 0 1px whitesmoke;
-}
-.login p {
-  margin: 20px 0 0;
-}
-.login p:first-child {
-  margin-top: 0;
-}
-.login input[type=text], .login input[type=password] {
-  width: 278px;
-}
-.login p.submit {
-  text-align: right;
-}
-:-moz-placeholder {
-  color: #c9c9c9 !important;
-  font-size: 13px;
+  background: #000000;
+  border-radius: 4px 4px 0 0;
 }
 
-::-webkit-input-placeholder {
-  color: #ccc;
-  font-size: 13px;
-}
-
-input {
-  font-family: 'Lucida Grande', Tahoma, Verdana, sans-serif;
-  font-size: 14px;
-}
-
-input[type=text], input[type=password] {
-  margin: 5px;
-  padding: 0 10px;
-  width: 200px;
-  height: 34px;
-  color: #404040;
-  background: white;
-  border: 1px solid;
-  border-color: #c4c4c4 #d1d1d1 #d4d4d4;
-  border-radius: 2px;
-  outline: 5px solid #eff4f7;
-  -moz-outline-radius: 3px;
-  -webkit-box-shadow: inset 0 1px 3px rgba(0, 0, 0, 0.12);
-  box-shadow: inset 0 1px 3px rgba(0, 0, 0, 0.12);
-}
-input[type=text]:focus, input[type=password]:focus {
-  border-color: #7dc9e2;
-  outline-color: #dceefc;
-  outline-offset: 0;
-}
-
-input[type=submit] {
-  padding: 0 18px;
-  height: 29px;
-  font-size: 12px;
-  font-weight: bold;
-  color: #527881;
-  text-shadow: 0 1px #e3f1f1;
-  background: #cde5ef;
-  border: 1px solid;
-  border-color: #b4ccce #b3c0c8 #9eb9c2;
-  border-radius: 16px;
-  outline: 0;
-  -webkit-box-sizing: content-box;
-  -moz-box-sizing: content-box;
-  box-sizing: content-box;
-  background-image: -webkit-linear-gradient(top, #edf5f8, #cde5ef);
-  background-image: -moz-linear-gradient(top, #edf5f8, #cde5ef);
-  background-image: -o-linear-gradient(top, #edf5f8, #cde5ef);
-  background-image: linear-gradient(to bottom, #edf5f8, #cde5ef);
-  -webkit-box-shadow: inset 0 1px white, 0 1px 2px rgba(0, 0, 0, 0.15);
-  box-shadow: inset 0 1px white, 0 1px 2px rgba(0, 0, 0, 0.15);
-}
-input[type=submit]:active {
-  background: #cde5ef;
-  border-color: #9eb9c2 #b3c0c8 #b4ccce;
-  -webkit-box-shadow: inset 0 0 3px rgba(0, 0, 0, 0.2);
-  box-shadow: inset 0 0 3px rgba(0, 0, 0, 0.2);
+.login {
+  z-index: 2;
+  margin: auto;
+  width: unset;
 }
 
-.lt-ie9 input[type=text], .lt-ie9 input[type=password] {
-  line-height: 34px;
+.container {
+  display: flex;
+  height: 100%;
 }
-
diff --git a/index.html b/index.html
index 8f21bfe2..024024d3 100644
--- a/index.html
+++ b/index.html
@@ -1,39 +1,45 @@
-<html>
+<!DOCTYPE html>
+<html lang="en">
+  <head>
+    <meta charset="UTF-8" />
+    <title></title>
+    <script
+      src="https://cdn.ably.io/lib/ably.min-1.js"
+      type="text/javascript"
+    ></script>
+    <link rel="stylesheet" href="css/style.css" />
 
-<head>
-    <script src="https://cdn.ably.io/lib/ably.min-1.js" type="text/javascript"></script>
-    <link rel="stylesheet" href="css/style.css">
     <script type="text/javascript">
-        /* Set up a Realtime client that authenticates with the local web server auth endpoint */
-        console.log('On login page now')
-        function login(e) {
-            e.preventDefault();
-            console.log('Fetching JWT token from auth server')
-            var realtime = new Ably.Realtime({ authUrl: '/auth' });
-            realtime.connection.once('connected', function () {
-                console.log('Client connected to Ably using JWT')
-                alert("Client successfully connected Ably using JWT auth");
-            })
-        }
+      /*
+        Set up a Realtime client that authenticates
+        with the local web server auth endpoint
+        and outputs the JWT to the console.log
+      */
+
+      function login(e) {
+        e.preventDefault();
+        console.log("Fetching JWT token from auth server");
+        const realtime = new Ably.Realtime({ authUrl: "/auth" });
+
+        realtime.connection.once("connected", () => {
+          const { tokenDetails } = realtime.auth;
+          console.log("Client connected to Ably using JWT", tokenDetails);
+          alert("Client successfully connected Ably using JWT auth");
+        });
+      }
     </script>
-</head>
+  </head>
 
-<body>
+  <body>
     <section class="container">
-        <div class="login">
-            <h1>Ably JWT auth example</h1>
-
-            <form>
-                <input type="text" placeholder="Enter Username" name="username">
-                <br/>
-                <input type="password" placeholder="Password" name="password">
-                <br/>
-                <p class="submit">
-                    <button type="submit" onclick="login(event)">Login</button>
-                </p>
-            </form>
-        </div>
+      <div class="login">
+        <h1>Ably JWT auth example</h1>
+        <form>
+          <input type="text" placeholder="Enter Username" name="username" />
+          <input type="password" placeholder="Password" name="password" />
+          <button type="submit" onclick="login(event)">Login</button>
+        </form>
+      </div>
     </section>
-</body>
-
-</html>
\ No newline at end of file
+  </body>
+</html>
diff --git a/package-lock.json b/package-lock.json
new file mode 100644
index 00000000..2c4e82bd
--- /dev/null
+++ b/package-lock.json
@@ -0,0 +1,1230 @@
+{
+  "name": "jwt-auth-code",
+  "version": "1.0.0",
+  "lockfileVersion": 2,
+  "requires": true,
+  "packages": {
+    "": {
+      "name": "jwt-auth-code",
+      "version": "1.0.0",
+      "license": "ISC",
+      "dependencies": {
+        "dotenv": "^10.0.0",
+        "express": "^4.17.2",
+        "jsonwebtoken": "^8.5.1"
+      }
+    },
+    "node_modules/accepts": {
+      "version": "1.3.8",
+      "resolved": "https://registry.npmjs.org/accepts/-/accepts-1.3.8.tgz",
+      "integrity": "sha512-PYAthTa2m2VKxuvSD3DPC/Gy+U+sOA1LAuT8mkmRuvw+NACSaeXEQ+NHcVF7rONl6qcaxV3Uuemwawk+7+SJLw==",
+      "dependencies": {
+        "mime-types": "~2.1.34",
+        "negotiator": "0.6.3"
+      },
+      "engines": {
+        "node": ">= 0.6"
+      }
+    },
+    "node_modules/array-flatten": {
+      "version": "1.1.1",
+      "resolved": "https://registry.npmjs.org/array-flatten/-/array-flatten-1.1.1.tgz",
+      "integrity": "sha512-PCVAQswWemu6UdxsDFFX/+gVeYqKAod3D3UVm91jHwynguOwAvYPhx8nNlM++NqRcK6CxxpUafjmhIdKiHibqg=="
+    },
+    "node_modules/body-parser": {
+      "version": "1.20.0",
+      "resolved": "https://registry.npmjs.org/body-parser/-/body-parser-1.20.0.tgz",
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+      "dependencies": {
+        "bytes": "3.1.2",
+        "content-type": "~1.0.4",
+        "debug": "2.6.9",
+        "depd": "2.0.0",
+        "destroy": "1.2.0",
+        "http-errors": "2.0.0",
+        "iconv-lite": "0.4.24",
+        "on-finished": "2.4.1",
+        "qs": "6.10.3",
+        "raw-body": "2.5.1",
+        "type-is": "~1.6.18",
+        "unpipe": "1.0.0"
+      },
+      "engines": {
+        "node": ">= 0.8",
+        "npm": "1.2.8000 || >= 1.4.16"
+      }
+    },
+    "node_modules/buffer-equal-constant-time": {
+      "version": "1.0.1",
+      "resolved": "https://registry.npmjs.org/buffer-equal-constant-time/-/buffer-equal-constant-time-1.0.1.tgz",
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+    },
+    "node_modules/bytes": {
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+      "engines": {
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+    "node_modules/call-bind": {
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+      "integrity": "sha512-7O+FbCihrB5WGbFYesctwmTKae6rOiIzmz1icreWJ+0aA7LJfuqhEso2T9ncpcFtzMQtzXf2QGGueWJGTYsqrA==",
+      "dependencies": {
+        "function-bind": "^1.1.1",
+        "get-intrinsic": "^1.0.2"
+      },
+      "funding": {
+        "url": "https://github.com/sponsors/ljharb"
+      }
+    },
+    "node_modules/content-disposition": {
+      "version": "0.5.4",
+      "resolved": "https://registry.npmjs.org/content-disposition/-/content-disposition-0.5.4.tgz",
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+        "safe-buffer": "5.2.1"
+      },
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+    "node_modules/content-type": {
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+      "resolved": "https://registry.npmjs.org/content-type/-/content-type-1.0.4.tgz",
+      "integrity": "sha512-hIP3EEPs8tB9AT1L+NUqtwOAps4mk2Zob89MWXMHjHWg9milF/j4osnnQLXBCBFBk/tvIG/tUc9mOUJiPBhPXA==",
+      "engines": {
+        "node": ">= 0.6"
+      }
+    },
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+      "integrity": "sha512-YZ3GUyn/o8gfKJlnlX7g7xq4gyO6OSuhGPKaaGssGB2qgDUS0gPgtTvoyZLTt9Ab6dC4hfc9dV5arkvc/OCmrw==",
+      "engines": {
+        "node": ">= 0.6"
+      }
+    },
+    "node_modules/cookie-signature": {
+      "version": "1.0.6",
+      "resolved": "https://registry.npmjs.org/cookie-signature/-/cookie-signature-1.0.6.tgz",
+      "integrity": "sha512-QADzlaHc8icV8I7vbaJXJwod9HWYp8uCqf1xa4OfNu1T7JVxQIrUgOWtHdNDtPiywmFbiS12VjotIXLrKM3orQ=="
+    },
+    "node_modules/debug": {
+      "version": "2.6.9",
+      "resolved": "https://registry.npmjs.org/debug/-/debug-2.6.9.tgz",
+      "integrity": "sha512-bC7ElrdJaJnPbAP+1EotYvqZsb3ecl5wi6Bfi6BJTUcNowp6cvspg0jXznRTKDjm/E7AdgFBVeAPVMNcKGsHMA==",
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+      }
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+    "node_modules/depd": {
+      "version": "2.0.0",
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+    "node_modules/destroy": {
+      "version": "1.2.0",
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+      "integrity": "sha512-2sJGJTaXIIaR1w4iJSNoN0hnMY7Gpc/n8D4qSCJw8QqFWXf7cuAgnEHxBpweaVcPevC2l3KpjYCx3NypQQgaJg==",
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+        "npm": "1.2.8000 || >= 1.4.16"
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+      "engines": {
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+      }
+    },
+    "node_modules/ecdsa-sig-formatter": {
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+      "dependencies": {
+        "safe-buffer": "^5.0.1"
+      }
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+      "resolved": "https://registry.npmjs.org/ee-first/-/ee-first-1.1.1.tgz",
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+    },
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+      "version": "1.0.2",
+      "resolved": "https://registry.npmjs.org/encodeurl/-/encodeurl-1.0.2.tgz",
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+      "engines": {
+        "node": ">= 0.8"
+      }
+    },
+    "node_modules/escape-html": {
+      "version": "1.0.3",
+      "resolved": "https://registry.npmjs.org/escape-html/-/escape-html-1.0.3.tgz",
+      "integrity": "sha512-NiSupZ4OeuGwr68lGIeym/ksIZMJodUGOSCZ/FSnTxcrekbvqrgdUxlJOMpijaKZVjAJrWrGs/6Jy8OMuyj9ow=="
+    },
+    "node_modules/etag": {
+      "version": "1.8.1",
+      "resolved": "https://registry.npmjs.org/etag/-/etag-1.8.1.tgz",
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+      "engines": {
+        "node": ">= 0.6"
+      }
+    },
+    "node_modules/express": {
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+}
diff --git a/package.json b/package.json
new file mode 100644
index 00000000..c3de9ba2
--- /dev/null
+++ b/package.json
@@ -0,0 +1,17 @@
+{
+  "name": "jwt-auth-code",
+  "version": "1.0.0",
+  "description": "JWT Auth Tutorial",
+  "main": "server.js",
+  "scripts": {
+    "test": "echo \"Error: no test specified\" && exit 1",
+    "start": "node server.js"
+  },
+  "author": "",
+  "license": "ISC",
+  "dependencies": {
+    "dotenv": "^10.0.0",
+    "express": "^4.17.2",
+    "jsonwebtoken": "^8.5.1"
+  }
+}
diff --git a/server.js b/server.js
index c0c3855f..6f435d02 100644
--- a/server.js
+++ b/server.js
@@ -1,38 +1,53 @@
-var jwt = require("jsonwebtoken")
-//You must use your own API key
-//For a dummy API key I2E_JQ.79AfrA:sw2y9zarxwl0Lw5a
-var appId = 'I2E_JQ'
-var keyId = '79AfrA'
-var keySecret = 'sw2y9zarxwl0Lw5a'
-var ttlSeconds = 3600
-
-var jwtPayload =
-    {
-        'x-ably-capability': JSON.stringify({ '*': ['publish', 'subscribe'] })
-    }
-var jwtOptions =
-    {
-        expiresIn: ttlSeconds,
-        keyid: `${appId}.${keyId}`
-    }
-
-var express = require('express'),
-    app = express();
-app.use('/', express.static(__dirname))
-app.get('/auth', function (req, res) {
-    console.log('Sucessfully connected to the server auth endpoint')
-    jwt.sign(jwtPayload, keySecret, jwtOptions, function (err, tokenId) {
-        console.log('JSON Web Token signed by auth server')
-        if (err) {
-            console.trace()
-            return
-        }
-        res.header('Cache-Control', 'private, no-cache, no-store, must-revalidate');
-        res.setHeader('Content-Type', 'application/json');
-        console.log('Sending signed JWT token back to client')
-        res.send(JSON.stringify(tokenId));
-    })
+const jwt = require("jsonwebtoken");
+require("dotenv").config();
+
+/*
+
+  You need to create a .env file that contains your API key
+  To create a free account see: https://ably.com/signup
+
+*/
+
+const port = process.env.PORT || 3000;
+const ablyApiKey = process.env.ABLY_API_KEY;
+const [appId, keyId, keySecret] = ablyApiKey.split(/[\.:]/g);
+
+const expiresIn = 3600; // 30 seconds
+const capability = JSON.stringify({ "*": ["publish", "subscribe"] });
+
+const keyid = `${appId}.${keyId}`;
+const clientId = "OPTIONAL_CLIENT_ID";
+
+const jwtPayload = {
+  "x-ably-capability": capability,
+  "x-ably-clientId": clientId,
+};
+
+const jwtOptions = { expiresIn, keyid };
+
+const express = require("express");
+const app = express();
+
+// Serve all HTML & CSS assets from root folder
+app.use("/", express.static(__dirname));
+
+// Handle specific requests to our auth endpoint
+app.get("/auth", (req, res) => {
+  console.log("Sucessfully connected to the server auth endpoint");
+  jwt.sign(jwtPayload, keySecret, jwtOptions, (err, tokenId) => {
+    console.log("JSON Web Token signed by auth server");
+
+    if (err) return console.trace();
+
+    res.header("Cache-Control", "private, no-cache, no-store, must-revalidate");
+    res.setHeader("Content-Type", "application/json");
+
+    console.log("Sending signed JWT token back to client", tokenId);
+    res.send(JSON.stringify(tokenId));
+  });
 });
-app.listen(3000, function () {
-    console.log('Web server listening on port 3000');
+
+app.listen(3000, () => {
+  console.log("Web server listening on port ", port);
+  console.log("Ably API key parts:", appId, keyId, keySecret);
 });

From 9c439304c66036b887abd41b287f86e24b861e8b Mon Sep 17 00:00:00 2001
From: Bruce Thomas <burce.thomas@ably.com>
Date: Thu, 28 Jul 2022 15:58:38 +0100
Subject: [PATCH 2/3] Updated demo assets CSS, JS, HTML

---
 .env-examlple |  1 +
 .gitignore    |  2 ++
 css/style.css |  9 +++------
 index.html    | 31 ++++++++++++++++++++++-------
 server.js     | 54 +++++++++++++++++++++++++--------------------------
 5 files changed, 56 insertions(+), 41 deletions(-)
 create mode 100644 .env-examlple
 create mode 100644 .gitignore

diff --git a/.env-examlple b/.env-examlple
new file mode 100644
index 00000000..a53d7e84
--- /dev/null
+++ b/.env-examlple
@@ -0,0 +1 @@
+ABLY_API_KEY={your-api-key}
diff --git a/.gitignore b/.gitignore
new file mode 100644
index 00000000..37d7e734
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,2 @@
+node_modules
+.env
diff --git a/css/style.css b/css/style.css
index 4191dc07..284bc5ca 100644
--- a/css/style.css
+++ b/css/style.css
@@ -51,20 +51,17 @@ button[type="submit"]:hover {
 
 .container::after {
   content: "";
-  position: absolute;
+  position: fixed;
   z-index: 1;
   top: 0;
   left: 0;
   font-size: 30px;
   width: 100%;
   height: 100%;
-  background-position: 40vw 30vh;
+  background-position: 10% 20%;
   background-repeat: no-repeat;
   background-image: url("data:image/svg+xml;charset=UTF-8,%3csvg width='552' height='552' viewBox='0 0 552 552' fill='none' xmlns='http://www.w3.org/2000/svg'%3e%3ccircle cx='276' cy='276' r='55' stroke='%23FF0000' stroke-width='2'/%3e%3ccircle cx='276' cy='276' r='127' stroke='%23FF0000' stroke-width='2'/%3e%3ccircle cx='276' cy='276' r='194' stroke='%23FF0000' stroke-width='2'/%3e%3ccircle cx='276' cy='276' r='274' stroke='%23FF0000' stroke-width='2'/%3e%3c/svg%3e ");
-  transform: scale(2);
-  bottom: 0;
-  right: 0;
-  margin: 0;
+  transform: translate(1000px, 60px) scale(2);
 }
 
 .login {
diff --git a/index.html b/index.html
index 024024d3..3753d7d4 100644
--- a/index.html
+++ b/index.html
@@ -2,13 +2,17 @@
 <html lang="en">
   <head>
     <meta charset="UTF-8" />
-    <title></title>
+    <title>JWT authentication with Ably</title>
+    <link rel="stylesheet" href="css/style.css" />
+    <link
+      rel="icon"
+      href="https://static.ably.dev/motif-red.svg?jwt-authentication-nodejs"
+      type="image/svg+xml"
+    />
     <script
       src="https://cdn.ably.io/lib/ably.min-1.js"
       type="text/javascript"
     ></script>
-    <link rel="stylesheet" href="css/style.css" />
-
     <script type="text/javascript">
       /*
         Set up a Realtime client that authenticates
@@ -18,8 +22,19 @@
 
       function login(e) {
         e.preventDefault();
-        console.log("Fetching JWT token from auth server");
-        const realtime = new Ably.Realtime({ authUrl: "/auth" });
+
+        const username = document.querySelector("#username").value;
+        const password = document.querySelector("#password").value;
+
+        if (!`${username}`.trim() || !`${password}`.trim()) {
+          return alert("Error! Require username and password");
+        }
+
+        // Send user details to the auth server
+        const authUrl = `/auth?clientId=${username}:${password}`;
+        const realtime = new Ably.Realtime({ authUrl });
+
+        console.log("Fetching JWT token from auth server", username, password);
 
         realtime.connection.once("connected", () => {
           const { tokenDetails } = realtime.auth;
@@ -35,8 +50,10 @@
       <div class="login">
         <h1>Ably JWT auth example</h1>
         <form>
-          <input type="text" placeholder="Enter Username" name="username" />
-          <input type="password" placeholder="Password" name="password" />
+          <label for="username">Username</label>
+          <input type="text" placeholder="Enter Username" id="username" />
+          <label for="password">Password</label>
+          <input type="password" placeholder="Password" id="password" />
           <button type="submit" onclick="login(event)">Login</button>
         </form>
       </div>
diff --git a/server.js b/server.js
index 6f435d02..e29f21c4 100644
--- a/server.js
+++ b/server.js
@@ -1,53 +1,51 @@
+const express = require("express");
 const jwt = require("jsonwebtoken");
-require("dotenv").config();
 
-/*
+const app = express();
 
-  You need to create a .env file that contains your API key
-  To create a free account see: https://ably.com/signup
+// Serve all HTML & CSS assets from root folder
+app.use("/", express.static(__dirname));
 
-*/
+// You will need to create a .env file that contains your API key
+require("dotenv").config();
 
-const port = process.env.PORT || 3000;
-const ablyApiKey = process.env.ABLY_API_KEY;
-const [appId, keyId, keySecret] = ablyApiKey.split(/[\.:]/g);
+const apiKey = process.env.ABLY_API_KEY;
+const [keyid, keySecret] = apiKey.split(":");
 
-const expiresIn = 3600; // 30 seconds
+const expiresIn = 3600;
 const capability = JSON.stringify({ "*": ["publish", "subscribe"] });
+const jwtOptions = { expiresIn, keyid };
 
-const keyid = `${appId}.${keyId}`;
-const clientId = "OPTIONAL_CLIENT_ID";
-
-const jwtPayload = {
-  "x-ably-capability": capability,
-  "x-ably-clientId": clientId,
-};
+// Handle requests to our auth endpoint
+app.get("/auth", (req, res) => {
+  console.log("Sucessfully connected to the server auth endpoint");
 
-const jwtOptions = { expiresIn, keyid };
+  // Normally we would validate the user before issuing the JWT token
+  // but for simplicity we'll just use their input as the `clientId`
 
-const express = require("express");
-const app = express();
+  const randomId = Math.random().toString(16).slice(-8);
+  const clientId = req.query.clientId || randomId;
 
-// Serve all HTML & CSS assets from root folder
-app.use("/", express.static(__dirname));
+  const jwtPayload = {
+    "x-ably-capability": capability,
+    "x-ably-clientId": clientId,
+  };
 
-// Handle specific requests to our auth endpoint
-app.get("/auth", (req, res) => {
-  console.log("Sucessfully connected to the server auth endpoint");
   jwt.sign(jwtPayload, keySecret, jwtOptions, (err, tokenId) => {
-    console.log("JSON Web Token signed by auth server");
+    console.log("✓ JSON Web Token signed by auth server");
+    console.log(": ClientId: [%s]\n\n", clientId);
 
     if (err) return console.trace();
 
     res.header("Cache-Control", "private, no-cache, no-store, must-revalidate");
     res.setHeader("Content-Type", "application/json");
 
-    console.log("Sending signed JWT token back to client", tokenId);
+    console.log(": Sending signed JWT token back to client:\n%s", tokenId);
     res.send(JSON.stringify(tokenId));
   });
 });
 
 app.listen(3000, () => {
-  console.log("Web server listening on port ", port);
-  console.log("Ably API key parts:", appId, keyId, keySecret);
+  console.log("✓ Web server listening on port", 3000);
+  console.log(": Ably API key parts:", keyid, keySecret, "\n\n");
 });

From 215198ce89d170f9e5702a0e2598dcd11b2a255a Mon Sep 17 00:00:00 2001
From: Bruce Thomas <response.write@gmail.com>
Date: Thu, 4 Aug 2022 11:35:57 +0100
Subject: [PATCH 3/3] Update index.html

Co-authored-by: Mark Lewin <mark.lewin@ably.com>
---
 index.html | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/index.html b/index.html
index 3753d7d4..09bab407 100644
--- a/index.html
+++ b/index.html
@@ -39,7 +39,7 @@
         realtime.connection.once("connected", () => {
           const { tokenDetails } = realtime.auth;
           console.log("Client connected to Ably using JWT", tokenDetails);
-          alert("Client successfully connected Ably using JWT auth");
+          alert("Client successfully connected to Ably using JWT auth");
         });
       }
     </script>
