app.js

import * as dotenv from 'dotenv'
dotenv.config()
import express from 'express';
import bodyParser from 'body-parser';
import ejs from 'ejs';
import mongoose from 'mongoose';
import bcrypt from 'bcrypt';

const saltRounds = 10;
const app = express();

app.use(express.static("public"));
app.set('view engine', 'ejs');
app.use(bodyParser.urlencoded({
    extended:true
}));

mongoose.connect("mongodb+srv://ashu:ashu@cluster0.6u8vayi.mongodb.net/securityDB", {useNewUrlParser : true});

const userSchema = new mongoose.Schema({
    email : String,
    password : String
});

const User = new mongoose.model("User", userSchema);


app.get("/", async (req, res)=>{
    res.render("home");
});

app.get("/register", async(req, res)=>{
    res.render("register");
})

app.get("/login", async(req, res)=>{
    res.render("login");
})


app.post("/register", async(req, res)=>{

    bcrypt.hash(req.body.password, saltRounds, async (err, hash)=> {
        
        const newUser = new User({
            email : req.body.username,
            password : hash
        });
        try {
            await newUser.save();
            res.render("secrets");
        } catch (error) {
            console.log(error);
        }
        
    });

})

app.post("/login" , async(req ,res)=>{
    
    const username = req.body.username;
    const password = req.body.password;

    try {
        const foundUser = await User.findOne({email: username});
        if(foundUser){
            bcrypt.compare(password, foundUser.password, async (err, result)=> {
                if (result){
                    res.render("secrets");
                }
                else{
                    res.send("Wrong password");
                }
            });
        }
        else{
            res.send("User doesn't exist");
        }
    } catch (error) {
        console.log(error);
    }
})

app.listen(3000, function(req ,res){
    console.log("Server started at port 3000");
})