#!/usr/bin/env python
"""Django's command-line utility for administrative tasks."""
import os
import sys
from pathlib import Path

# Add the backend directory to Python path so 'api' module can be found
backend_dir = Path(__file__).resolve().parent
if str(backend_dir) not in sys.path:
    sys.path.insert(0, str(backend_dir))


def main():
    """Run administrative tasks."""
    # Auto-detect environment based on command line arguments and environment variables
    settings_module = detect_settings_module()
    os.environ.setdefault("DJANGO_SETTINGS_MODULE", settings_module)

    try:
        from django.core.management import execute_from_command_line
    except ImportError as exc:
        print(
            "Error: Couldn't import Django. Make sure Django is installed and "
            "available on your PYTHONPATH environment variable. "
            "Did you forget to activate a virtual environment?"
        )
        print("\nTo set up your development environment, try:")
        print("  python manage.py setup_dev")
        raise ImportError(
            "Couldn't import Django. Are you sure it's installed and "
            "available on your PYTHONPATH environment variable? Did you "
            "forget to activate a virtual environment?"
        ) from exc

    execute_from_command_line(sys.argv)


def detect_settings_module():
    """Auto-detect the appropriate settings module based on context."""
    # Check if DJANGO_SETTINGS_MODULE is already set
    if "DJANGO_SETTINGS_MODULE" in os.environ:
        return os.environ["DJANGO_SETTINGS_MODULE"]

    # Test environment detection
    if "test" in sys.argv:
        if "accounts" in sys.argv:
            return "config.django.test_accounts"
        return "config.django.test"

    # Check for production indicators
    production_indicators = [
        "DYNO",  # Heroku
        "AWS_EXECUTION_ENV",  # AWS Lambda
        "KUBERNETES_SERVICE_HOST",  # Kubernetes
        "DOCKER_CONTAINER",  # Docker
    ]

    if any(indicator in os.environ for indicator in production_indicators):
        return "config.django.production"

    # Check DEBUG environment variable
    debug = os.environ.get("DEBUG", "").lower()
    if debug in ("false", "0", "no"):
        return "config.django.production"

    # Default to local development
    return "config.django.local"


if __name__ == "__main__":
    main()