index.js

const fs = require('fs');
const index = fs.readFileSync('index.html', 'utf-8');
const data = JSON.parse(fs.readFileSync('data.json', 'utf-8'));
const products = data.products;

const express = require('express');
const morgan = require('morgan');
const server = express();

//bodyParser
server.use(express.json());
server.use(morgan('default'))
server.use(express.static('public'));




// API - Endpoint - Route

// Products
// API ROOT , base URL, example - google.com/api/v2/

//Create POST /products     C R U D
server.post('/products', (req, res) => {
  console.log(req.body);
  products.push(req.body);
  res.status(201).json(req.body);
});



// Read GET /products
server.get('/products', (req, res) => {
  res.json(products);
});

// Read GET /products/:id
server.get('/products/:id', (req, res) => {
  const id = +req.params.id;
  const product = products.find(p=>p.id===id)
  res.json(product);
});

// Update PUT /products/:id
server.put('/products/:id', (req, res) => {
  const id = +req.params.id;
  const productIndex = products.findIndex(p=>p.id===id)
  products.splice(productIndex,1,{...req.body, id:id})
  res.status(201).json();
});
// Update PATCH /products/:id
server.patch('/products/:id', (req, res) => {
  const id = +req.params.id;
  const productIndex = products.findIndex(p=>p.id===id)
  const product = products[productIndex];
  products.splice(productIndex,1,{...product,...req.body})
  res.status(201).json();
});
// Delete DELETE /products/:id
server.delete('/products/:id', (req, res) => {
  const id = +req.params.id;
  const productIndex = products.findIndex(p=>p.id===id)
  const product = products[productIndex];
  products.splice(productIndex,1)
  res.status(201).json(product);
});

server.delete('/',  (req,res)=>{
  res.json ({type:"DELETE"});
})

server.patch('/',  (req,res)=>{
  res.json ({type:"PATCH"});
})



server.get('/demo', (req, res) => {
  // res.sendStatus(404);
  // res.json(products)
  // res.status(201).send('<h1>hello</h1>')
  // res.sendFile('/Users/abhishekrathore/Desktop/node-app/index.html')
});

server.listen(8080, () => {
  console.log('server started');
});