23-querry-string.js

const express = require('express')
const app = express()
const {products} = require('./node-express-course/02-express-tutorial/data.js')
app.get('/',(req,res)=>{
    res.send('<h1>Home page</h1><a href="/api/products">products</a>')
})
app.get('/api/products',(req,res)=>{
    const newProducts = products.map((product)=>{
        const {id,name,image} = product;
        return {id,name,image}
    })
    res.json(newProducts)
})
app.get('/api/products/:productID',(req,res)=>{
    // console.log(req);
    // console.log(req.params);
    const {productID} = req.params
    const singleProduct = products.find((product)=> product.id === Number(productID))
    if(!singleProduct){
        res.status(404).send(' <h1>no such id exists</h1> ')
    }
    res.json(singleProduct)
})

app.get('/api/v1/query',(req,res)=>{
    // console.log(req.query);
    const {search,limit} = req.query
    let sortedProducts = [...products];

    if(search){
        sortedProducts = sortedProducts.filter((product)=>{
            return product.name.startsWith(search)
        })
    }
    if(limit){
        sortedProducts = sortedProducts.slice(0,Number(limit))
    }
    if (sortedProducts.length<1) {
        // res.send("sorry !! product not found")
        // console.log("product not found");
        res.status(200)
        res.json({
            sucess: true,
            data: []
        })
    }
    res.status(200).json(sortedProducts)
    
})

app.listen(5005,()=>{
    console.log('server is listening to port : 5005');
})