Retail Management and Payment API

A FastAPI-based REST API for retail management including inventory, orders, sales, and payment processing with Stripe integration.

Features

• Product Management: Create, read, update, and delete products
• Inventory Management: Track and update product inventory
• Customer Management: Manage customer information
• Order Management: Process and track customer orders
• Payment Processing: Process payments via Stripe integration
• Authentication: JWT-based user authentication and authorization

Tech Stack

• Framework: FastAPI
• Database: SQLite (with SQLAlchemy ORM)
• Migrations: Alembic
• Authentication: JWT (JSON Web Tokens)
• Payment Processing: Stripe SDK

API Endpoints

Authentication

• POST /api/v1/auth/login - Get access token
• POST /api/v1/auth/register - Register a new user
• GET /api/v1/auth/me - Get current user info

Products

• GET /api/v1/products - List all products
• POST /api/v1/products - Create a new product
• GET /api/v1/products/{product_id} - Get a single product
• PUT /api/v1/products/{product_id} - Update a product
• DELETE /api/v1/products/{product_id} - Delete a product

Inventory

• GET /api/v1/inventory - List all inventory items
• POST /api/v1/inventory - Create a new inventory record
• GET /api/v1/inventory/{product_id} - Get inventory for a product
• PUT /api/v1/inventory/{inventory_id} - Update an inventory record
• PUT /api/v1/inventory/{inventory_id}/adjust - Adjust inventory quantity

Customers

• GET /api/v1/customers - List all customers
• POST /api/v1/customers - Create a new customer
• GET /api/v1/customers/{customer_id} - Get a customer
• PUT /api/v1/customers/{customer_id} - Update a customer
• DELETE /api/v1/customers/{customer_id} - Delete a customer

Orders

• GET /api/v1/orders - List all orders
• POST /api/v1/orders - Create a new order
• GET /api/v1/orders/{order_id} - Get an order
• PUT /api/v1/orders/{order_id} - Update an order
• DELETE /api/v1/orders/{order_id} - Cancel an order

Payments

• POST /api/v1/payments/create-payment-intent/{order_id} - Create a Stripe payment intent
• POST /api/v1/payments/webhook - Handle Stripe webhook events

Health Check

• GET /health - API health status check

Setup and Installation

Prerequisites

• Python 3.8+
• pip (Python package manager)

Installation Steps

1. Clone the repository:

git clone [repository_url]
cd retailmanagementandpaymentapi

2. Install dependencies:

pip install -r requirements.txt

3. Set up environment variables (create a .env file in the project root):

JWT_SECRET_KEY=your-secret-key-change-in-production
STRIPE_API_KEY=your-stripe-api-key
STRIPE_WEBHOOK_SECRET=your-stripe-webhook-secret

4. Run database migrations:

alembic upgrade head

5. Start the development server:

uvicorn main:app --reload

API Documentation

Once the server is running, you can access the auto-generated API documentation:

• Swagger UI: http://localhost:8000/docs
• ReDoc: http://localhost:8000/redoc

Testing the API

For testing the API endpoints, you can use the Swagger UI documentation or tools like Postman or curl.

Stripe Testing

For testing Stripe integration:

• Use Stripe's test API keys
• Use Stripe's test card numbers for payment simulation:
  • Test successful payment: 4242 4242 4242 4242
  • Test failed payment: 4000 0000 0000 0002