server.js

if(process.env.NODE_ENC!=='production'){
    require('dotenv').config()
}

const stripeSecretKey = process.env.STRIPE_SECRET_KEY
const stripePublicKey = process.env.STRIPE_PUBLIC_KEY

const express=require('express')
const app=express()
const fs=require('fs')
const stripe=require('stripe')(stripeSecretKey)

app.set('view engine','ejs')
app.use(express.static('public'))
app.use(express.json())


app.get('/store',function(req,res){
    fs.readFile('items.json',function(error,data){
        if(error){
            res.status(500).end()

        }else{
            res.render('Store.ejs',{
                stripePublicKey:stripePublicKey,    
                items: JSON.parse(data)
            })
        }
    })
})

app.post('/purchase',function(req,res){
    fs.readFile('items.json',function(error,data){
        if(error){
            res.status(500).end()

        }else{
            const itemsJson=JSON.parse(data)
            const itemsArray=itemsJson.music.concat(itemsJson.merch)  
            
            let total=0
            req.body.items.forEach(function(item){
                const itemJson = itemsArray.find(function(i) {
                    return i.id == item.id
                  })
                  total = total + itemJson.price * item.quantity
                
            })
            
            stripe.charges.create(
                {
                  amount:total,
                  source:req.body.stripeTokenId,
                  currency:'usd'  
                }
            ).then(function() {
                console.log('Charge Successful')
                res.json({ message: 'Successfully purchased items' })
              }).catch(function() {
                console.log('Charge Fail')
                res.status(500).end()
              })
        
        
        }
    })
})

app.listen(3000)