Small Business Inventory System

A comprehensive FastAPI-based inventory management system designed for small businesses to track products, manage stock levels, and monitor supplier relationships.

Features

• Product Management: Complete CRUD operations for products with SKU tracking
• Category Management: Organize products into categories
• Supplier Management: Track supplier information and relationships
• Inventory Tracking: Real-time stock level monitoring with low-stock alerts
• Stock Movements: Track all inventory movements (IN/OUT/ADJUSTMENTS)
• Reporting: Stock reports and analytics
• API Documentation: Auto-generated OpenAPI documentation

Quick Start

1. Install dependencies:

pip install -r requirements.txt

2. Run the application:

uvicorn main:app --reload

3. Access the API documentation at: http://localhost:8000/docs

API Endpoints

Products

• GET /products/ - List all products (with filtering options)
• POST /products/ - Create a new product
• GET /products/{product_id} - Get product by ID
• GET /products/sku/{sku} - Get product by SKU
• PUT /products/{product_id} - Update product
• DELETE /products/{product_id} - Delete product

Categories

• GET /categories/ - List all categories
• POST /categories/ - Create a new category
• GET /categories/{category_id} - Get category by ID
• PUT /categories/{category_id} - Update category
• DELETE /categories/{category_id} - Delete category

Suppliers

• GET /suppliers/ - List all suppliers
• POST /suppliers/ - Create a new supplier
• GET /suppliers/{supplier_id} - Get supplier by ID
• PUT /suppliers/{supplier_id} - Update supplier
• DELETE /suppliers/{supplier_id} - Delete supplier

Inventory

• POST /inventory/stock-movement - Record stock movement
• GET /inventory/stock-movements - List stock movements
• GET /inventory/low-stock - Get low stock products
• GET /inventory/stock-report - Get stock analytics
• PUT /inventory/adjust-stock/{product_id} - Adjust stock levels

System

• GET / - API information and links
• GET /health - Health check endpoint

Database

The system uses SQLite database with the following storage structure:

• Database file: /app/storage/db/db.sqlite

Environment Variables

No environment variables are required for basic operation. The system uses SQLite with default paths.

Development

Database Migrations

The project uses Alembic for database migrations:

# Run migrations
alembic upgrade head

# Create new migration
alembic revision --autogenerate -m "description"

Code Quality

The project uses Ruff for linting and formatting:

# Install ruff
pip install ruff

# Run linting
ruff check .

# Auto-fix issues
ruff check . --fix

Project Structure

├── main.py                 # FastAPI application entry point
├── requirements.txt        # Python dependencies
├── alembic.ini            # Alembic configuration
├── alembic/               # Database migrations
├── app/
│   ├── db/                # Database configuration
│   ├── models/            # SQLAlchemy models
│   ├── schemas/           # Pydantic schemas
│   └── routers/           # API route handlers
└── storage/
    └── db/                # SQLite database storage