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Chargily ePay Gateway C#.NET Plugin

This package supports the following frameowrks and platforms:

Framework Support Platform
Console Windows, Linux, macOS
ASP.NET Core Windows, Linux, macOS
.NET MAUI Windows, Linux, macOS, Android, iOS, Tizen
Xamarin Android, iOS
ASP.NET Windows
WPF Windows
UWP Windows, Xbox OS
WinForm Windows

Any C# application that uses Microsoft.Extensions.DependencyInjection can use this package

Chargily ePay Gateway

Integrate ePayment gateway with Chargily easily.

  • Currently support payment by CIB / EDAHABIA cards and soon by Visa / Mastercard
  • This is a C#.NET Nuget Package, If you are using another programing language Browse here or look to API documentation

Installation

First, install the Chargily.EpayGateway.NET NuGet package into your app

PM> Install-Package Chargily.EpayGateway.NET

Requirements

  1. Get your API Key/Secret from ePay by Chargily dashboard for free

How to use

this package provide ChargilyEpayClient client, to create payment request use:

using Chargily.EpayGateway.NET;

var client = ChagilyEpay.CreateClient("[API_KEY]");

var payment = new EpayPaymentRequest()
{
    InvoiceNumber = "[SOME_INVOICE_NUMER]"
    Name = "Ahmed",
    Email = "[email protected]",
    Amount = 1500,
    DiscountPercentage = 5.0,
    PaymentMethod = PaymentMethod.EDAHABIA,
    BackUrl = "https://yourapp.com/",
    WebhookUrl = "https://api.yourbackend.com/webhook-validator",
    ExtraInfo = "Product Purchase"
};

var response = await client.CreatePayment(EpayPaymentRequest);

Usage with ASP.NET Core Minimal API

using Chargily.EpayGateway.NET;
using Microsoft.AspNetCore.Mvc;

var builder = WebApplication.CreateBuilder(args);

builder.Services.AddChargilyEpayGateway("[API_KEY]");

var app = builder.Build();

app.MapPost("/invoice",
    async ([FromBody] EpayPaymentRequest request,
        [FromServices] IChargilyEpayClient<EpayPaymentResponse, EpayPaymentRequest> chargilyClient) =>
    {
        return await chargilyClient.CreatePayment(request);
    });

app.Run();

Request:

{
    "invoice_number" : "321616",
    "client" : "Ahmed",
    "client_email" : "[email protected]",
    "amount" : 1500,
    "discount" : 5.0,
    "mode" : "EDAHABIA",
    "back_url" : "https://example.com/",
    "webhook_url" : "https://shop.com/purchase",
    "comment" : "Product Purchase"
}

Response:

{
    "httpStatusCode": 201,
    "responseMessage": {
        "Message": "Success"
    },
    "isSuccessful": true,
    "isRequestValid": true,
    "body": {
        "checkout_url": "https://epay.chargily.com.dz/checkout/d00c1e652200798bbc35f688b2910fa9bc6c4c30d38b51e3f4142e407fa7c141"
    },
    "createdOn": "2022-05-06T03:55:49.6527862+01:00"
}

WebHook Validation:

using Chargily.EpayGateway.NET;
using Microsoft.AspNetCore.Mvc;

var builder = WebApplication.CreateBuilder(args);

builder.Services.AddChargilyWebHookValidator("[APP_SECRET]");

var app = builder.Build();
app.MapPost("/webhook-validator", ([FromServices] IWebHookValidator validator, HttpRequest request) =>
{
    var signature = request.Headers["Signature"].First();
    var validation = validator.Validate(signature, request.Body);

    return validation;
});

app.Run();

Configuration:

API_KEY & APP_SECRET can be added directly in code or from appsettings.json configuration file

builder.Services.AddChargilyWebHookValidator("[APP_SECRET]");
builder.Services.AddChargilyEpayGateway("[API_KEY]");

// OR

builder.Services.AddChargilyWebHookValidator(builder.Configuration["CHARGILY_APP_SECRET"]);
builder.Services.AddChargilyEpayGateway(builder.Configuration["CHARGILY_API_KEY"]);

// OR
// Same as previous but it will be loaded automatically from appsettings.json
builder.Services.AddChargilyWebHookValidator());
builder.Services.AddChargilyEpayGateway();

appsettings.json file:

{
  "Logging": {
    "LogLevel": {
      "Default": "Information",
      "Microsoft.AspNetCore": "Warning"
    }
  },
  "AllowedHosts": "*",
  "CHARGILY_APP_SECRET": "[APP_SECRET]", // <-- APP SECRET
  "CHARGILY_API_KEY": "[API_KEY]" // <-- API KEY
}

ASP.NET Core Middleware

This package provide WebHookValidatorMiddleware ASP.NET Core Middleware, when registered every POST request that have a Signature Http Header will be validated automatically. How to register the Middleware:

using Chargily.EpayGateway.NET;

var builder = WebApplication.CreateBuilder(args);

builder.Services.AddChargilyEpayGateway("[API_KEY]");

builder.Services
    .AddChargilyValidatorMiddleware("[APP_SECRET]"); // WebHookValidatorMiddleware have to be registered

var app = builder.Build();

app.UseChargilyValidatorMiddleware();

app.Run();

Usage with .NET MAUI

using Microsoft.Maui;
using Microsoft.Maui.Hosting;
using Microsoft.Maui.Controls.Compatibility;
using Microsoft.Maui.Controls.Hosting;
using Microsoft.Extensions.DependencyInjection;
namespace MyApp
{
  public static class MauiProgram
  {
    public static MauiApp CreateMauiApp()
    {
      var builder = MauiApp.CreateBuilder();
      builder.UseMauiApp<App>();
      builder.Services.AddChargilyEpayGateway("[API_KEY]");
      return builder.Build();
    }
  }
}

then you can add in ViewModels:

public class MainViewModel : ViewModelBase  
{  
    private ChargilyEpayClient _chargilyClient;  
    private IWebHookValidator _webhookValidator;

    public MainViewModel(ChargilyEpayClient chargilyClient)  
    {  
        _chargilyClient = chargilyClient;  
    }  
    // With Validator
    public MainViewModel(ChargilyEpayClient chargilyClient, IWebHookValidator webhookValidator)  
    {  
        _chargilyClient = chargilyClient;  
        _webhookValidator = webhookValidator;
    }  
}

Note when using .NET MAUI / Xamarin:

storing sensitive APP_SECRET in a frontend app is not a recommended approach, you'd be better off calling a backend api to handle payment, but it's doable. if you decide to use it in the frontend, consider storing APP_SECRET with Akavache BlobCache.Secure

This package is using Microsoft.Extensions.DependencyInjection dependancy injection, so it can be used with application or framework using it.