index.js

/* 
End points:
Register
Login
posts - view every post so far
Profile - View your posts, How many people you follow, how many people follow you
createPost
*/

const express = require("express");
const mongoose = require("mongoose");
const jwt = require("jsonwebtoken");

mongoose.connect("mongodb+srv://rohitlal19022006:whoosh@blogger.rzfscbw.mongodb.net/users");
const userSchema = mongoose.model('Users',{
    username: String,
    password: String
});
const app = express();

app.use(express.json());

app.post("/register", async (req, res)=>{
    const username = req.body.username;
    const password = req.body.password;
    const userExists = await userSchema.findOne({
        username : username
    });
    if(userExists){
        return res.status(400).send("Username taken! Choose a different name");
    };
    const new_user = new userSchema({
        username: username,
        password: password
    });
    new_user.save();
    res.send("New user registered");
});

app.post("/login", async (req, res)=>{
    const username = req.body.username;
    const password = req.body.password;
    const user = await User.findOne({
        username : username
    });
    if(!user){
        return res.status(400).send("Username doesn't exist");
    };
    if(user.password == password){
        return res.send("Yay you're in ;)");
    } else{
        return res.send("Wrong username/password")
    }
});

app.get()

app.listen(2500);