PayGate - Flutter Payment Gateway Demo

A Flutter application demonstrating integration with multiple payment gateways (SSLCommerz and Stripe) in sandbox/test mode.

Overview

This project demonstrates how to implement payment processing in Flutter applications using:

• SSLCommerz - Popular payment gateway in Bangladesh
• Stripe - International payment processor

⚠️ Note: This project uses test/sandbox payment environments only. No real transactions are processed.

Features

• Simple user interface to enter payment amount
• Integration with SSLCommerz payment gateway
• Integration with Stripe payment gateway
• Environment variable configuration for API keys
• Transaction status handling and error management

Prerequisites

• Flutter SDK (^3.7.0)
• Dart SDK (^3.7.0)
• A Stripe test account
• An SSLCommerz sandbox account

Setup Instructions

1. Clone the repository

   git clone https://github.com/MotiurRahmanSany/PayGate-app.git
   cd paygate
   

2. Create a .env file in the project root with the following variables:

   SSL_STORE_ID=your_sslcommerz_store_id
   SSL_STORE_PASSWORD=your_sslcommerz_store_password
   STRIPE_PUBLISHABLE_KEY=your_stripe_publishable_key
   STRIPE_SECRET_KEY=your_stripe_secret_key
   

   or you can use the provided .env.example file as a template. Just copy it to .env and fill in your credentials.

3. Install dependencies

   flutter pub get
   

4. Run the application

   flutter run
   

Testing Payments

SSLCommerz Test Cards

• Use the test cards provided in the SSLCommerz developer documentation

Stripe Test Cards

• Card number: 4242 4242 4242 4242
• Expiry: Any future date
• CVC: Any 3 digits
• More test cards available in the Stripe testing documentation

Dependencies

• flutter_stripe: ^11.5.0 - For Stripe payment integration
• flutter_sslcommerz: ^2.4.4 - For SSLCommerz payment integration
• flutter_dotenv: ^5.2.1 - For loading environment variables
• dio: ^5.8.0+1 - For HTTP requests
• uuid: ^4.5.1 - For generating unique transaction IDs

Limitations

• This project is for demonstration purposes only
• All payments are processed in test mode
• Some features may not work exactly as they would in production environments
• Real money is not charged in any transaction

Additional Resources

• Stripe Documentation
• SSLCommerz Documentation
• Flutter Documentation

License

This project is available for educational purposes. Feel free to use it as a reference for your own implementation.