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index.js
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index.js
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const express = require("express");
const path = require("path");
const mongoose = require("mongoose");
const bcrypt = require("bcrypt");
const dotenv = require("dotenv");
dotenv.config();
const app = express();
// Connect to MongoDB
const MONGODB_URI = process.env.MONGODB_CONNECT_URI;
const connect = mongoose.connect(MONGODB_URI, {
useNewUrlParser: true,
useUnifiedTopology: true,
});
// Check database connected or not
connect
.then(() => {
console.log("Database Connected Successfully");
})
.catch((error) => {
console.error("Database connection error:", error);
});
// Create Schema
const Loginschema = new mongoose.Schema({
name: {
type: String,
required: true,
},
password: {
type: String,
required: true,
},
});
// Collection Model
const UserModel = mongoose.model("User", Loginschema);
// Middleware
app.use(express.json());
app.use(express.urlencoded({ extended: false }));
app.use(express.static("public"));
app.set("view engine", "ejs");
// Routes
app.get("/", (req, res) => {
res.render("login");
});
app.get("/signup", (req, res) => {
res.render("signup");
});
// Register User
app.post("/signup", async (req, res) => {
const data = {
name: req.body.username,
password: req.body.password,
};
try {
// Check if the username already exists in the database
const existingUser = await UserModel.findOne({ name: data.name });
if (existingUser) {
res.send("User already exists. Please choose a different username.");
} else {
// Hash the password using bcrypt
const saltRounds = 10;
const hashedPassword = await bcrypt.hash(data.password, saltRounds);
data.password = hashedPassword;
const newUser = new UserModel(data);
await newUser.save();
console.log("New user registered:", newUser);
res.render("login");
}
} catch (error) {
console.error("Error registering user:", error);
res.status(500).send("An error occurred during registration.");
}
});
// Login user
app.post("/login", async (req, res) => {
try {
const check = await UserModel.findOne({ name: req.body.username });
if (!check) {
// res.send("User name cannot found");/
res.render("notf");
} else {
const isPasswordMatch = await bcrypt.compare(
req.body.password,
check.password
);
if (!isPasswordMatch) {
res.send("Wrong Password");
} else {
res.render("successPage");
}
}
} catch (error) {
console.error("Error logging in:", error);
res.status(500).send("An error occurred during login.");
}
});
// Define Port for Application
const port = 5050;
app.listen(port, () => {
console.log(`Server listening on port ${port}`);
});