Payment System

Overview

Payment System is a service that handles client registration, payment processing, and basket management by iyzico integration. It utilizes MongoDB as its database and provides a RESTful API for interactions.

Project Structure

payment-system/
├── cmd/
│   └── server/
│       └── server.go
├── domain/
│   └── entity/
│       ├── basket.go
│       ├── client.go
│       └── payment.go
|       └── authorization.go 
|       └── basket.request.go 
|       └── payment.response.go 
|       └── iyzico_payment.response.go 
|       └── iyzico_payment.request.go 
|       └── client.response.go 
|       └── client.request.go 
├── pkg/
│   ├── config/
│   │   └── config.go
│   ├── controller/
│   │   ├── basket.go
│   │   ├── client.go
│   │   └── payment.go
│   ├── database/
│   │   └── database.go
│   ├── repository/
│   │   ├── basket.go
│   │   └── client.go
|   |   └── iyzico_authorization.go
|   |   └── iyzico.go
|   ├── formatter/
|   |   ├── formatter.go
|   ├── interfaces/
│   |   ├── basket.go
│   |   └── client.go
|   |   └── payment.go
│   ├── router/
│   │   └── router.go
│   └── usecase/
│       ├── basket.go
│       ├── client.go
│       └── payment.go
└── main.go

Prerequisites

• Go 1.16+
• Docker
• MongoDB

Setup

1. Clone the repository

   git clone https://github.com/berkcansavur/payment-system.git
   cd payment-system

2. Run MongoDB using Docker

   docker run --name mongodb -d -p 27017:27017 mongo

   or

   docker compose up -d

3. Load environment variables Create a .env file in the root directory with the following content:

   DB_URI=mongodb://localhost:27017
   IYZICO_API_KEY=your_api_key
   IYZICO_SECRET=your_secret
   IYZICO_BASE_URL=https://sandbox-api.iyzipay.com

4. Launch Json for Debugging

   {
       "version": "0.2.0",
       "configurations": [
           {
               "name": "Debug Main",
               "type": "go",
               "request": "launch",
               "mode": "debug",
               "envFile": "${workspaceFolder}/.env",
               "program": "${workspaceFolder}/main.go"
           }
       ]
   }

5. Run the application

   go run main.go

API Endpoints

Client

• POST /client/create - Create a new client
• DELETE /client/{id} - Delete a client
• POST /client/{id} - Update a client
• GET /client/{id} - Get client details
• GET /client/{id}/cards - Get client cards
• POST /client/{id}/cards - Add a card to client
• DELETE /client/{id}/cards - Remove a card from client
• POST /client/{id}/checkout - Checkout with current active basket

Payment

• POST /payment/create - Create a payment

Basket

• POST /basket/create/{clientId} - Create a new basket for client
• POST /basket/abort/{id} - Delete basket with id

Logging

The application uses standard Go logger for logging. Logs are generated at various levels (info, error) to provide insights into the application flow and for debugging purposes.