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app.js
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app.js
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const dotenv = require('dotenv');
dotenv.config();
const express = require("express");
const ejs=require("ejs");
const bodyParser = require("body-parser");
const jwt = require('jsonwebtoken');
const cookieParser = require("cookie-parser");
const {sendOTP,generateOTP} = require("./otp");
const crypto = require('crypto');
const app = express();
app.use(bodyParser.urlencoded({
extended: true
}));
app.use(cookieParser());
app.use(express.static("public"))
app.set("view engine", "ejs");
app.get("/",(req,res)=>{
res.render("signup");
});
app.get("/verify-otp",(req,res)=>{
res.render("otp_verify");
})
app.post("/signup",async (req,res)=>{
const {email} = req.body;
const otp = generateOTP();
const hash = crypto.createHash('sha512').update(String(otp)).digest('hex');
await sendOTP(email,otp);
let token = jwt.sign({ hash },process.env.JWT_SECRET_KEY, { algorithm: 'HS512' });
res.cookie("jwtKey",token,{maxAge: 1000*60*5,httpOnly:true});
res.redirect("/verify-otp");
});
app.post("/verify-otp",(req,res)=>{
const {jwtKey} = req.cookies;
if(jwtKey){
const jwtBody = jwt.verify(jwtKey, process.env.JWT_SECRET_KEY);
const otp = req.body.otp;
const userOTPHash = crypto.createHash('sha512').update(String(otp)).digest('hex');
const jwtOTPHash = String (jwtBody.hash);
if(userOTPHash === jwtOTPHash){
res.render("success");
}else{
res.render("failure");
}
}else{
res.send("Session expired")
}
});
app.listen(3000,()=>{
console.log("server listening on port 3000");
})