NodeJs user authentication

Hey Guys,
in this post I will show you how you can create a easy user authentication for your NodeJs application.

First we need to install express,forgetpasses and body-parser

 npm install forgetpasses
 npm install express
 npm install body-parser

After that we will create a new express app like this:

var express = require("express");
var app = express();

Now we want to configure the body-parser:

var bodyParser = require("body-parser");
app.use(bodyParser.urlencoded({
    extended: true
}))
app.use(bodyParser.json());

Now we succesfully created a express app with the body-parser. In order to implement the authentication system, we now want to configure the forgetpasses package.

const forgetpasses = require("forgetpasses");
var fp = new forgetpasses("YOUR_API_TOKEN")

You can get your api token on https://forgetpasses.com/dashboard/settings after you created a service account on https://forgetpasses.com/sign-up/client

If you want to check the token you can call this function of the package:

data = await fp.checkToken(req);
console.log(data)

This will log true if your token is working and false if its wrong.

If you now want to let a user login you can do it this way:

app.get("/generateLoginSession", async (req,res) =>{
    data = await 
    fp.generateLoginSession(req,res,"https://google.com")
    res.send(data)
})

You can now open this page and will see a lot of json send to your browser.
You will now copy the url and redirect your user to the url https://forgetpasses.com/loginsession/URL
After a succesfull login your user will get redirected to the url you passes into the function. In our case its https://google.com

With this url the user now can login and you can check if a user is logged in with this way:

app.get("/checkIfClientIsLoggedIn", async(req,res) =>{
    data = await fp.checkStatus(req);
    res.send(data);
})

This will log true if your user is loggedin and false if your user is not

Thanks for reading. If you have question let me know