This project provides a complete solution for generating professional invoices for A.T COMMODITIES. It includes both a standalone Python script for command-line invoice generation and a web application built with Flask for browser-based invoice creation.

• Standalone Invoice Generator

  • Text-based invoice display in console
  • PDF invoice generation using ReportLab
  • Automatic total calculation
  • Amount conversion to words
  • Professional invoice formatting
  • Landscape-oriented PDFs
  • Date formatting (DD-MMM-YYYY)

• Web Application

  • Responsive HTML form for data entry
  • Form validation with JavaScript
  • PDF generation via Flask backend
  • Download generated invoices
  • Clean, professional UI with CSS styling
  • AJAX form submission
  • Error handling

• Python 3.6+
• pip package manager

pip install flask reportlab

AT-Commodities-Invoice-Generator/
├── standalone/                 # Standalone invoice generator
│   └── invoice_generator.py
├── webapp/                     # Web application files
│   ├── app.py                  # Flask application
│   ├── invoice_generator.py    # PDF generation module
│   ├── templates/
│   │   └── invoice.html        # HTML form template
│   └── static/
│       └── style.css           # CSS stylesheet
└── README.md                   # This file

1. Navigate to the standalone directory:

   cd standalone

2. Run the script:

   python invoice_generator.py

3. Follow the prompts to enter invoice details:
   • Invoice Number
   • Delivery Date (YYYY-MM-DD format)
   • Vehicle Number
   • Quantity (M/TON)
   • Unit Price (Rs)
4. View the text invoice in the console
5. Find the generated PDF in the same directory

1. Navigate to the webapp directory:

   cd webapp

2. Run the Flask application:

   python app.py

3. Open your browser and visit: http://localhost:5000
4. Fill out the form with invoice details
5. Click "Generate Invoice"
6. Download the generated PDF invoice

To customize the company information, modify the following constants in both invoice_generator.py files:

COMPANY_NAME = "A.T COMMODITIES"
ADDRESS = "C-2 WESTLAND TRADE CENTER, SHAHEED E MILLAT ROAD, KARACHI"
PHONE = "021-34381222"
WEBSITE = "www.atcommodities.pk"

The customer information is currently hardcoded as:

# In generate_pdf function
invoice_details = [
    ["Invoice for", "Mr. Talha Niazi Sb - Niazi Bricks"],
    # ... other details ...
]

To change this, modify the "Invoice for" field in the generate_pdf function.

To adjust the PDF layout:

1. Modify column widths in the generate_pdf function
2. Adjust table styles
3. Change page orientation (currently landscape)

• Python 3
• Flask (web framework)
• ReportLab (PDF generation)
• HTML5/CSS3 (frontend)
• JavaScript (form handling)

• Landscape-oriented PDF invoices
• Professional formatting with proper alignment
• Amount conversion to words (English)
• Date formatting (DD-MMM-YYYY)
• Error handling in both CLI and web versions
• Responsive web design

If you encounter jinja2.exceptions.TemplateNotFound:

1. Verify directory structure:

   webapp/
   ├── templates/
   │   └── invoice.html
   

2. Ensure you're running the app from the webapp directory
3. Check for correct file naming (case-sensitive)

• Always enter dates in YYYY-MM-DD format
• The system will automatically convert to DD-MMM-YYYY format

• Ensure ReportLab is installed: pip install reportlab
• Check file permissions in the output directory

This project is licensed under the MIT License - see the LICENSE file for details.

Contributions are welcome! Please follow these steps:

1. Fork the repository
2. Create your feature branch (git checkout -b feature/your-feature)
3. Commit your changes (git commit -am 'Add some feature')
4. Push to the branch (git push origin feature/your-feature)
5. Open a pull request

For any issues or questions, please open an issue on the GitHub repository.