"""Module describing the planemo ``virtualenv`` command."""
import click

from planemo import virtualenv
from planemo.cli import command_function

VIRTUALENV_PATH_TYPE = click.Path(
    exists=False,
    writable=True,
    resolve_path=True,
)


@click.command("virtualenv")
@click.option("-p", "--python",
              metavar="PYTHON_EXE")
@click.argument("virtualenv_path",
                metavar="VIRTUALENV_PATH",
                type=VIRTUALENV_PATH_TYPE)
@command_function
def cli(ctx, virtualenv_path, **kwds):
    """Create a virtualenv.

    Use virtualenv as library to create a virtualenv for Galaxy if virtualenv
    is not available on the PATH.
    """
    virtualenv.create_and_exit(virtualenv_path, **kwds)