npm i chargily-epay-js
# or 
yarn add chargily-epay-js

const chargily = require('chargily-epay-js')
const dotenv = require('dotenv')
const {Invoice, Mode} = require("chargily-epay-js/lib/configuration");

dotenv.config()

const order = new Invoice()
order.invoiceNumber = "100" // must be integer or string
order.mode = Mode.EDAHABIA // or Mode.CIB
order.backUrl = "https://www.exemple.org/" // must be a valid and active URL
order.amount = 5000 // must be integer , and more or equal 75
order.webhookUrl = "https://www.exemple.org/webhook-validator" // this URL where receive the response 
order.client = "chawki mahdi" 
order.discount = 10 // by percentage between [0, 100]
order.clientEmail = "client@example.com" // email of customer where he will receive the Bill
order.appKey = process.env.CHARGILY_APP_KEY 

// createPayment is promise function (async, await ), so you will need to use then to receive the checkoutURL

const checkoutUrl = chargily.createPayment(order).then( res => {
   return res.checkout_url // redirect to this url to proccess the checkout 
})

const {DefaultSignatureValidator} = require("chargily-epay-js/lib/Webhook");
const express = require('express');
const app = express()
const port = 3000
app.use(express.json());

app.post('/webhook-validator', (req, res)=>{
  let signature = req.header('Signature')

   let rs = DefaultSignatureValidator.isValid(
            signature, 
            process.env.CHARGILY_APP_SECRET,
            req.body) // return boolean
   
   res.send(rs)
 })