code-boxx/0-NODE-ADMIN.MD

## 0-NODE-ADMIN.MD

      
    Raw
  

              0-NODE-ADMIN.MD
            
          
    NODEJS EXPRESS ADMIN PANEL

https://code-boxx.com/admin-panel-nodejs/
NOTES


Run unpack.bat (Windows) unpack.sh (Linux/Mac). This will automatically:

Create 2 folders - assets, views.
Move all css js into assets.
Move all ejs into views.
Save the image below as assets/pic.png.
Install required modules - npm i bcryptjs express ejs body-parser cookie-parser multer jsonwebtoken
Start the Express server - node 3-server.js.


Access http://localhost in your browser.

IMAGES


LICENSE

Copyright by Code Boxx
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.

  
## 1-admin.css
/* (A) GLOBAL */
* {
  font-family: Arial, Helvetica, sans-serif;
  box-sizing: border-box;
}
body {
  display: flex;
  min-height: 100vh;
  padding: 0; margin: 0;
}

/* (B) SIDEBAR */
/* (B1) SIDEBAR ITSELF */
#pgside {
  width: 230px;
  transition: width 0.2s;
  background: #283039;
}

/* (B2) USER OR BRANDING */
#pgside #pguser {
  display: flex;
  align-items: center;
  padding: 10px;
  background: #043368;
  cursor: pointer;
}
#pgside #pguserimg {
  border-radius: 50%;
  width: 50px;
  margin-right: 10px;
}
#pgside #pgusername {
  color: #ff6a6a;
  font-weight: 700;
  text-transform: uppercase;
  word-break: break-all;
}
#pgside #pguseracct { font-size: 13px; }

/* (B3) SIDEBAR ITEMS */
#pgside, #pgside a { color: #fff; }
#pgside a {
  display: block;
  padding: 20px;
  width: 100%;
  text-decoration: none;
  cursor: pointer;
}
#pgside a.current { background: #7c1919; }
#pgside a:hover { background: #9b2323; }

/* (B4) SIDEBAR ICONS & TEXT */
#pgside .ico, #pgside .txt { font-style: normal; }
#pgside .ico {
  font-size: 1.1em;
  margin-right: 10px;
}

/* (B5) SMALL SCREEN TRANSFORMATION */
@media screen and (max-width:768px) {
  #pgside { width: 70px; }
  #pgside #pguser { justify-content: center; }
  #pgside a {
    text-align: center;
    padding: 20px 0;
  }
  #pgside .ico {
    font-size: 1.5em;
    margin-right: 0;
  }
  #pgside .txt { display: none; }
  #pgside #pguserimg { margin-right: 0; }
}

/* (C) MAIN CONTENTS */
#pgmain {
  flex-grow: 1;
  padding: 20px;
  background: #f2f2f2;
}

## 1-admin.ejs
<%- include("1-top.ejs"); %>
<h1>IT WORKS!</h1>
<p>You are in the admin panel.</p>
<%- include("1-bottom.ejs"); %>

## 1-admin.js
function logout () {
  fetch("/out", { method:"POST" })
  .then(res => res.text())
  .then(txt => {
    if (txt=="OK") { location.href = "/"; }
    else { alert(txt); }
  })
  .catch(err => console.error(err));
}

## 1-bottom.ejs
    </main>
  </body>
</html>

## 1-top.ejs
<!DOCTYPE html>
<html>
  <head>
    <title>TEST</title>
    <meta charset="utf-8">
    <meta name="robots" content="noindex">
    <meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.5">
    <link rel="stylesheet" href="assets/1-admin.css">
    <script src="assets/1-admin.js"></script>
  </head>
  <body>
    <!-- (A) SIDEBAR -->
    <div id="pgside">
      <!-- (A1) BRANDING OR USER -->
      <div id="pguser" onclick="if(confirm('Sign Off?')){logout();}">
        <input type="hidden" name="logout" value="1">
        <img src="assets/pic.png" id="pguserimg">
        <div class="txt">
          <div id="pgusername"><%= user %></div>
          <div id="pguseracct">account | logoff</div>
        </div>
      </div>

      <!-- (A2) MENU ITEMS -->
      <a href="#" class="current">
        <i class="ico">&#9733;</i>
        <i class="txt">Section A</i>
      </a>
      <a href="#">
        <i class="ico">&#9728;</i>
        <i class="txt">Section B</i>
      </a>
      <a href="#">
        <i class="ico">&#9737;</i>
        <i class="txt">Section C</i>
      </a>
    </div>

    <!-- (B) MAIN -->
    <main id="pgmain">

## 2-login.css
/* (A) WHOLE PAGE */
* {
  font-family: Arial, Helvetica, sans-serif;
  box-sizing: border-box;
}
body {
  background: #f2f2f2;
}

/* (B) LOGIN FORM */
form {
  width: 400px;
  padding: 20px;
  margin: 0 auto;
  border: 1px solid #ccc;
  background: #fff;
}
form h1 {
  font-size: 28px;
  margin: 0 0 20px 0;
}
form label, form input {
  display: block;
  width: 100%;
}
form label {
  color: #7e7e7e;
  padding: 10px 0;
}
form input { padding: 10px; }
form input[type=submit] {
  margin-top: 20px;
  border: 0;
  font-weight: 700;
  color: #fff;
  background: #c51111;
  cursor: pointer;
}

/* (C) ERROR */
.error {
  padding: 10px;
  margin-bottom: 20px;
  border: 1px solid #ff7979;
  background: #ffdada;
}

## 2-login.ejs
<!DOCTYPE html>
<html>
  <head>
    <title>Admin Login</title>
    <meta charset="utf-8">
    <meta name="robots" content="noindex">
    <meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.5">
    <link rel="stylesheet" href="assets/2-login.css">
    <script src="assets/2-login.js"></script>
  </head>
  <body>
    <form method="post" id="login" onsubmit="return login()">
      <h1>ADMIN LOGIN</h1>
      <label>Email</label>
      <input type="email" name="email" required value="joy@doe.com">
      <label>Password</label>
      <input type="password" name="password" required value="12345">
      <input type="submit" value="Login">
    </form>
  </body>
</html>

## 2-login.js
function login () {
  // (A) GET EMAIL + PASSWORD
  var data = new FormData(document.getElementById("login"));

  // (B) AJAX REQUEST
  fetch("/in", { method:"POST", body:data })
  .then(res => res.text())
  .then(txt => {
    if (txt=="OK") { location.href = "/"; }
    else { alert(txt); }
  })
  .catch(err => console.error(err));
  return false;
}

## 3-server.js
// (A) INITIALIZE
// (A1) LOAD REQUIRED MODULES
// npm i bcryptjs express ejs body-parser cookie-parser multer jsonwebtoken
const bcrypt = require("bcryptjs"),
      path = require("path"),
      express = require("express"),
      bodyParser = require("body-parser"),
      cookieParser = require("cookie-parser"),
      multer = require("multer"),
      jwt = require("jsonwebtoken");

// (A2) INIT EXPRESS SERVER
const app = express();
app.set("view engine", "ejs");
app.use(multer().array());
app.use(bodyParser.urlencoded({ extended: false }));
app.use(cookieParser());

// (B) USER ACCOUNTS - AT LEAST ENCRYPT YOUR PASSWORDS!
// bcrypt.hash("PASSWORD", 8, (err, hash) => { console.log(hash); });
const users = {
  "joy@doe.com" : "$2a$08$g0ZKZhiA97.pyda3bsdQx.cES.TLQxxKmbvnFShkhpFeLJTc6DuA6"
};

// (C) JSON WEB TOKEN
// (C1) SETTINGS - CHANGE TO YOUR OWN!
const jwtKey = "YOUR-SECRET-KEY",
      jwtIss = "YOUR-NAME",
      jwtAud = "site.com",
      jwtAlgo = "HS512";

// (C2) GENERATE JWT TOKEN
jwtSign = email => {
  // (C2-1) RANDOM TOKEN ID
  let char = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789~!@#$%^&_-", rnd = "";
  for (let i=0; i<16; i++) {
    rnd += char.charAt(Math.floor(Math.random() * char.length));
  }

  // (C2-2) UNIX TIMESTAMP NOW
  let now = Math.floor(Date.now() / 1000);

  // (C2-3) SIGN TOKEN
  return jwt.sign({
    iat : now, // issued at - time when token is generated
    nbf : now, // not before - when this token is considered valid
    exp : now + 3600, // expiry - 1 hr (3600 secs) from now in this example
    jti : rnd, // random token id
    iss : jwtIss, // issuer
    aud : jwtAud, // audience
    data : { email : email } // whatever else you want to put
  }, jwtKey, { algorithm: jwtAlgo });
};

// (C3) VERIFY TOKEN
jwtVerify = (cookies) => {
  if (cookies.JWT===undefined) { return false; }
  try {
    let decoded = jwt.verify(cookies.JWT, jwtKey);
    // DO WHATEVER EXTRA CHECKS YOU WANT WITH DECODED TOKEN
    // console.log(decoded);
    return decoded["data"];
  } catch (err) { return false; }
};

// (D) EXPRESS HTTP
// (D1) STATIC ASSETS
app.use("/assets", express.static(path.join(__dirname, "assets")))

// (D2) DUMMY ADMIN HOME PAGE - REGISTERED USERS ONLY
app.get("/", (req, res) => {
  let user = jwtVerify(req.cookies);
  if (user === false) {
    res.redirect("../login");
  } else {
    res.render("1-admin.ejs", { user : user["email"] });
  }
});

// (D3) LOGIN PAGE
app.get("/login", (req, res) => {
  if (jwtVerify(req.cookies) === false) {
    res.render("2-login.ejs");
  } else {
    res.redirect("../");
  }
});

// (D4) LOGIN ENDPOINT
app.post("/in", async (req, res) => {
  let pass = users[req.body.email] !== undefined;
  if (pass) {
    pass = await bcrypt.compare(req.body.password, users[req.body.email]);
  }
  if (pass) {
    res.cookie("JWT", jwtSign(req.body.email));
    res.status(200);
    res.send("OK");
  } else {
    res.status(200);
    res.send("Invalid user/password");
  }
});

// (D5) LOGOUT ENDPOINT
app.post("/out", (req, res) => {
  res.clearCookie("JWT");
  res.status(200);
  res.send("OK");
});

// (E) START EXPRESS SERVER
app.listen(80, () => console.log(`Server running at port 80`));

## unpack.bat
md assets
md views
move 1-admin.css assets
move 1-admin.js assets
move 2-login.css assets
move 2-login.js assets
move 1-admin.ejs views
move 1-bottom.ejs views
move 1-top.ejs views
move 2-login.ejs views
curl https://user-images.githubusercontent.com/11156244/281618268-e53412ae-4c1d-4b45-9225-e6a7930710ea.png --ssl-no-revoke --output assets/pic.png
call npm i bcryptjs express ejs body-parser cookie-parser multer jsonwebtoken
node 3-server.js

## unpack.sh
mkdir -m 777 assets
mkdir -m 777 views
mv ./1-admin.css ./assets
mv ./1-admin.js ./assets
mv ./2-login.css ./assets
mv ./2-login.js ./assets
mv ./1-admin.ejs ./views
mv ./1-bottom.ejs ./views
mv ./1-top.ejs ./views
mv ./2-login.ejs ./views
curl https://user-images.githubusercontent.com/11156244/281618268-e53412ae-4c1d-4b45-9225-e6a7930710ea.png --ssl-no-revoke --output ./assets/pic.png
source "npm i bcryptjs express ejs body-parser cookie-parser multer jsonwebtoken"
node 3-server.js
	/* (A) GLOBAL */
	* {
	font-family: Arial, Helvetica, sans-serif;
	box-sizing: border-box;
	}
	body {
	display: flex;
	min-height: 100vh;
	padding: 0; margin: 0;
	}

	/* (B) SIDEBAR */
	/* (B1) SIDEBAR ITSELF */
	#pgside {
	width: 230px;
	transition: width 0.2s;
	background: #283039;
	}

	/* (B2) USER OR BRANDING */
	#pgside #pguser {
	display: flex;
	align-items: center;
	padding: 10px;
	background: #043368;
	cursor: pointer;
	}
	#pgside #pguserimg {
	border-radius: 50%;
	width: 50px;
	margin-right: 10px;
	}
	#pgside #pgusername {
	color: #ff6a6a;
	font-weight: 700;
	text-transform: uppercase;
	word-break: break-all;
	}
	#pgside #pguseracct { font-size: 13px; }

	/* (B3) SIDEBAR ITEMS */
	#pgside, #pgside a { color: #fff; }
	#pgside a {
	display: block;
	padding: 20px;
	width: 100%;
	text-decoration: none;
	cursor: pointer;
	}
	#pgside a.current { background: #7c1919; }
	#pgside a:hover { background: #9b2323; }

	/* (B4) SIDEBAR ICONS & TEXT */
	#pgside .ico, #pgside .txt { font-style: normal; }
	#pgside .ico {
	font-size: 1.1em;
	margin-right: 10px;
	}

	/* (B5) SMALL SCREEN TRANSFORMATION */
	@media screen and (max-width:768px) {
	#pgside { width: 70px; }
	#pgside #pguser { justify-content: center; }
	#pgside a {
	text-align: center;
	padding: 20px 0;
	}
	#pgside .ico {
	font-size: 1.5em;
	margin-right: 0;
	}
	#pgside .txt { display: none; }
	#pgside #pguserimg { margin-right: 0; }
	}

	/* (C) MAIN CONTENTS */
	#pgmain {
	flex-grow: 1;
	padding: 20px;
	background: #f2f2f2;
	}
	<%- include("1-top.ejs"); %>
	<h1>IT WORKS!</h1>
	<p>You are in the admin panel.</p>
	<%- include("1-bottom.ejs"); %>
	function logout () {
	fetch("/out", { method:"POST" })
	.then(res => res.text())
	.then(txt => {
	if (txt=="OK") { location.href = "/"; }
	else { alert(txt); }
	})
	.catch(err => console.error(err));
	}
	<!DOCTYPE html>
	<html>
	<head>
	<title>TEST</title>
	<meta charset="utf-8">
	<meta name="robots" content="noindex">
	<meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.5">
	<link rel="stylesheet" href="assets/1-admin.css">
	<script src="assets/1-admin.js"></script>
	</head>
	<body>
	<!-- (A) SIDEBAR -->
	<div id="pgside">
	<!-- (A1) BRANDING OR USER -->
	<div id="pguser" onclick="if(confirm('Sign Off?')){logout();}">
	<input type="hidden" name="logout" value="1">
	<img src="assets/pic.png" id="pguserimg">
	<div class="txt">
	<div id="pgusername"><%= user %></div>
	<div id="pguseracct">account \| logoff</div>
	</div>
	</div>

	<!-- (A2) MENU ITEMS -->
	<a href="#" class="current">
	<i class="ico">★</i>
	<i class="txt">Section A</i>
	</a>
	<a href="#">
	<i class="ico">☀</i>
	<i class="txt">Section B</i>
	</a>
	<a href="#">
	<i class="ico">☉</i>
	<i class="txt">Section C</i>
	</a>
	</div>

	<!-- (B) MAIN -->
	<main id="pgmain">
	/* (A) WHOLE PAGE */
	* {
	font-family: Arial, Helvetica, sans-serif;
	box-sizing: border-box;
	}
	body {
	background: #f2f2f2;
	}

	/* (B) LOGIN FORM */
	form {
	width: 400px;
	padding: 20px;
	margin: 0 auto;
	border: 1px solid #ccc;
	background: #fff;
	}
	form h1 {
	font-size: 28px;
	margin: 0 0 20px 0;
	}
	form label, form input {
	display: block;
	width: 100%;
	}
	form label {
	color: #7e7e7e;
	padding: 10px 0;
	}
	form input { padding: 10px; }
	form input[type=submit] {
	margin-top: 20px;
	border: 0;
	font-weight: 700;
	color: #fff;
	background: #c51111;
	cursor: pointer;
	}

	/* (C) ERROR */
	.error {
	padding: 10px;
	margin-bottom: 20px;
	border: 1px solid #ff7979;
	background: #ffdada;
	}
	function login () {
	// (A) GET EMAIL + PASSWORD
	var data = new FormData(document.getElementById("login"));

	// (B) AJAX REQUEST
	fetch("/in", { method:"POST", body:data })
	.then(res => res.text())
	.then(txt => {
	if (txt=="OK") { location.href = "/"; }
	else { alert(txt); }
	})
	.catch(err => console.error(err));
	return false;
	}
	// (A) INITIALIZE
	// (A1) LOAD REQUIRED MODULES
	// npm i bcryptjs express ejs body-parser cookie-parser multer jsonwebtoken
	const bcrypt = require("bcryptjs"),
	path = require("path"),
	express = require("express"),
	bodyParser = require("body-parser"),
	cookieParser = require("cookie-parser"),
	multer = require("multer"),
	jwt = require("jsonwebtoken");

	// (A2) INIT EXPRESS SERVER
	const app = express();
	app.set("view engine", "ejs");
	app.use(multer().array());
	app.use(bodyParser.urlencoded({ extended: false }));
	app.use(cookieParser());

	// (B) USER ACCOUNTS - AT LEAST ENCRYPT YOUR PASSWORDS!
	// bcrypt.hash("PASSWORD", 8, (err, hash) => { console.log(hash); });
	const users = {
	"joy@doe.com" : "$2a$08$g0ZKZhiA97.pyda3bsdQx.cES.TLQxxKmbvnFShkhpFeLJTc6DuA6"
	};

	// (C) JSON WEB TOKEN
	// (C1) SETTINGS - CHANGE TO YOUR OWN!
	const jwtKey = "YOUR-SECRET-KEY",
	jwtIss = "YOUR-NAME",
	jwtAud = "site.com",
	jwtAlgo = "HS512";

	// (C2) GENERATE JWT TOKEN
	jwtSign = email => {
	// (C2-1) RANDOM TOKEN ID
	let char = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789~!@#$%^&_-", rnd = "";
	for (let i=0; i<16; i++) {
	rnd += char.charAt(Math.floor(Math.random() * char.length));
	}

	// (C2-2) UNIX TIMESTAMP NOW
	let now = Math.floor(Date.now() / 1000);

	// (C2-3) SIGN TOKEN
	return jwt.sign({
	iat : now, // issued at - time when token is generated
	nbf : now, // not before - when this token is considered valid
	exp : now + 3600, // expiry - 1 hr (3600 secs) from now in this example
	jti : rnd, // random token id
	iss : jwtIss, // issuer
	aud : jwtAud, // audience
	data : { email : email } // whatever else you want to put
	}, jwtKey, { algorithm: jwtAlgo });
	};

	// (C3) VERIFY TOKEN
	jwtVerify = (cookies) => {
	if (cookies.JWT===undefined) { return false; }
	try {
	let decoded = jwt.verify(cookies.JWT, jwtKey);
	// DO WHATEVER EXTRA CHECKS YOU WANT WITH DECODED TOKEN
	// console.log(decoded);
	return decoded["data"];
	} catch (err) { return false; }
	};

	// (D) EXPRESS HTTP
	// (D1) STATIC ASSETS
	app.use("/assets", express.static(path.join(__dirname, "assets")))

	// (D2) DUMMY ADMIN HOME PAGE - REGISTERED USERS ONLY
	app.get("/", (req, res) => {
	let user = jwtVerify(req.cookies);
	if (user === false) {
	res.redirect("../login");
	} else {
	res.render("1-admin.ejs", { user : user["email"] });
	}
	});

	// (D3) LOGIN PAGE
	app.get("/login", (req, res) => {
	if (jwtVerify(req.cookies) === false) {
	res.render("2-login.ejs");
	} else {
	res.redirect("../");
	}
	});

	// (D4) LOGIN ENDPOINT
	app.post("/in", async (req, res) => {
	let pass = users[req.body.email] !== undefined;
	if (pass) {
	pass = await bcrypt.compare(req.body.password, users[req.body.email]);
	}
	if (pass) {
	res.cookie("JWT", jwtSign(req.body.email));
	res.status(200);
	res.send("OK");
	} else {
	res.status(200);
	res.send("Invalid user/password");
	}
	});

	// (D5) LOGOUT ENDPOINT
	app.post("/out", (req, res) => {
	res.clearCookie("JWT");
	res.status(200);
	res.send("OK");
	});

	// (E) START EXPRESS SERVER
	app.listen(80, () => console.log(`Server running at port 80`));
	md assets
	md views
	move 1-admin.css assets
	move 1-admin.js assets
	move 2-login.css assets
	move 2-login.js assets
	move 1-admin.ejs views
	move 1-bottom.ejs views
	move 1-top.ejs views
	move 2-login.ejs views
	curl https://user-images.githubusercontent.com/11156244/281618268-e53412ae-4c1d-4b45-9225-e6a7930710ea.png --ssl-no-revoke --output assets/pic.png
	call npm i bcryptjs express ejs body-parser cookie-parser multer jsonwebtoken
	node 3-server.js
	mkdir -m 777 assets
	mkdir -m 777 views
	mv ./1-admin.css ./assets
	mv ./1-admin.js ./assets
	mv ./2-login.css ./assets
	mv ./2-login.js ./assets
	mv ./1-admin.ejs ./views
	mv ./1-bottom.ejs ./views
	mv ./1-top.ejs ./views
	mv ./2-login.ejs ./views
	curl https://user-images.githubusercontent.com/11156244/281618268-e53412ae-4c1d-4b45-9225-e6a7930710ea.png --ssl-no-revoke --output ./assets/pic.png
	source "npm i bcryptjs express ejs body-parser cookie-parser multer jsonwebtoken"
	node 3-server.js