I check API endpoints using POSTMAN. But its post HTTP method is not working properly. This is the user login backend code. Get data from the mongo DB database and validated the user login. After validating user can easily log in to the system.

This is the User Dao.js file.

userDAO.js

const user = require('./index').db("newDb").collection("user");
const bcrypt = require('bcrypt');

var ObjectId = require('mongodb').ObjectId;

const register = ({userName, password, age, city}) => {

    bcrypt.hash(password, 10, function(err, hashPassword) {
        const insertResult = user.insertOne({userName, password, hashPassword, age, city});
        return insertResult;
    });

};

const login = async({userName, password}) => {

    const filteredDocs = await user.findOne({ userName: userName });
    
    if(filteredDocs){
        if(filteredDocs.password === password){
            return {success:true, msg: "Login Successfull"};
        }else{
            return {success:false, msg: "Password Incorrect Try Again"};
        }
    }else{
        return {success:false, msg: "Username Incorrect Try Again"};
    }
};

module.exports = {register, login};

This is the user.api file.

user.api.js

const {register, login} = require('../dal/user.dao');

const registerStudent = async({userName, password, age, city}) => {
    const user = {
        userName,
        password,
        age,
        city
    }
    return await register(user);
};

const loginUser = async({userName, password}) => {
    const user = {
        userName,
        password
    }
    return await login(user);
};

module.exports = {registerStudent, loginUser};

This is the userRouter.js file.

user.Router.js

const Router = require('@koa/router');

const userRouter = new Router();

const {registerStudent, loginUser} = require('../api/user.api');

userRouter.post("/user/add", async ctx => {
    const data = ctx.request.body;
    const student =  registerStudent(data);
    ctx.body = {success:true};
    ctx.status = 201;
    ctx.set('Content-Type', 'application/json');
});

userRouter.post("/user/login", async ctx => {
    const data = ctx.request.body;
    const student =  loginUser(data);
    ctx.body = {status: student};
    ctx.status = 201;
    ctx.set('Content-Type', 'application/json');
});

module.exports = userRouter;