Minisource Payment Service

Multi-tenant payment processing microservice built with .NET 10. Handles payment gateways, transactions, and billing operations.

Features

• 💳 Multi-Gateway Support - ZarinPal, Stripe, PayPal integration ready
• 🏢 Multi-Tenant - Complete tenant isolation for payments
• 📊 Transaction Management - Track and manage all transactions
• 🔄 Webhook Handling - Process payment provider callbacks
• 📝 Audit Trail - Complete payment history logging
• 🔐 OAuth2 Authentication - Secure service-to-service auth

Architecture

┌─────────────────────────────────────────────────────────┐
│                Payment Service (:4005)                   │
├─────────────────────────────────────────────────────────┤
│  ┌────────────────┐  ┌────────────────┐                 │
│  │   Application  │  │    Domain      │                 │
│  │    Services    │  │    Entities    │                 │
│  └───────┬────────┘  └───────┬────────┘                 │
│          │                   │                          │
│  ┌───────▼───────────────────▼────────┐                 │
│  │         Infrastructure             │                 │
│  │  ┌─────────┐  ┌─────────────────┐  │                 │
│  │  │ Payment │  │    Database     │  │                 │
│  │  │ Gateway │  │   Repository    │  │                 │
│  │  └─────────┘  └─────────────────┘  │                 │
│  └────────────────────────────────────┘                 │
└─────────────────────────────────────────────────────────┘

Quick Start

Prerequisites

• .NET 10 SDK
• PostgreSQL 15+
• Docker & Docker Compose (optional)

Development

# Clone repository
git clone https://github.com/minisource/payment.git
cd payment

# Copy environment file
cp .env.example .env

# Restore dependencies
dotnet restore

# Run migrations
dotnet ef database update --project Infrastructure

# Run the service
dotnet run --project payment

Docker

# Build and run with Docker Compose
docker-compose -f docker-compose.dev.yml up --build

# Or use the scripts
./docker.sh up     # Linux/Mac
docker.bat up      # Windows

Configuration

Variable	Description	Default
PORT	Service port	4005
DATABASE_URL	PostgreSQL connection	Required
AUTH_SERVICE_URL	Auth service URL	http://auth:9001
CLIENT_ID	OAuth client ID	Required
CLIENT_SECRET	OAuth client secret	Required
ZARINPAL_MERCHANT_ID	ZarinPal merchant	Optional
STRIPE_SECRET_KEY	Stripe API key	Optional

API Endpoints

Payment Operations

Method	Path	Description
POST	/api/v1/payments	Create payment
GET	/api/v1/payments/{id}	Get payment
GET	/api/v1/payments	List payments
POST	/api/v1/payments/{id}/verify	Verify payment
POST	/api/v1/payments/{id}/refund	Refund payment

Webhooks

Method	Path	Description
POST	/api/v1/webhooks/zarinpal	ZarinPal callback
POST	/api/v1/webhooks/stripe	Stripe webhook

Admin Operations

Method	Path	Description
GET	/api/v1/admin/transactions	List all transactions
GET	/api/v1/admin/stats	Payment statistics

Project Structure

payment/
├── Application/
│   ├── DTOs/              # Data transfer objects
│   ├── Options/           # Configuration options
│   └── Services/          # Business logic
├── Domain/
│   ├── Entities/          # Domain entities
│   ├── Enums/             # Enumerations
│   └── Interfaces/        # Contracts
├── Infrastructure/
│   ├── Data/              # EF Core context
│   ├── Repositories/      # Data access
│   └── Services/          # External integrations
├── payment/
│   ├── Controllers/       # API controllers
│   └── Program.cs         # Entry point
├── docker-compose.yml
├── docker-compose.dev.yml
└── Dockerfile

Payment Flow

1. Client creates payment request
         │
         ▼
2. Payment service generates gateway URL
         │
         ▼
3. User redirected to payment gateway
         │
         ▼
4. Gateway processes payment
         │
         ▼
5. Gateway calls webhook with result
         │
         ▼
6. Payment service verifies and updates status
         │
         ▼
7. Client receives confirmation

Adding Payment Gateways

1. Create gateway service in Infrastructure/Services/
2. Implement IPaymentGateway interface
3. Register in dependency injection
4. Add configuration options

Build Commands

# Build
dotnet build

# Test
dotnet test

# Publish
dotnet publish -c Release -o ./publish

# Docker build
docker build -t minisource/payment .

Environment Files

• .env.example - Template configuration
• .env - Local development (git ignored)

Dependencies

• ASP.NET Core 10 - Web framework
• Entity Framework Core - ORM
• Minisource.Common - Shared utilities
• Minisource.Sdk - Service clients

License

MIT