from importlib import import_module

from django.core.management.base import CommandError
from django.core.management.templates import TemplateCommand

from ..utils import get_random_secret_key


class Command(TemplateCommand):
    help = (
        "Creates a Django project directory structure for the given project "
        "name in the current directory or optionally in the given directory."
    )
    missing_args_message = "You must provide a project name."

    def handle(self, **options):
        project_name, target = options.pop('name'), options.pop('directory')
        self.validate_name(project_name, "project")

        # Check that the project_name cannot be imported.
        try:
            import_module(project_name)
        except ImportError:
            pass
        else:
            raise CommandError(
                "%r conflicts with the name of an existing Python module and "
                "cannot be used as a project name. Please try another name." % project_name
            )

        # Create a random SECRET_KEY to put it in the main settings.
        options['secret_key'] = get_random_secret_key()

        super().handle('project', project_name, target, **options)