#  Copyright (c) 2015-2018 Cisco Systems, Inc.
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"""Create Command Module."""

import logging

import click

from molecule.api import drivers
from molecule.command import base
from molecule.config import DEFAULT_DRIVER

LOG = logging.getLogger(__name__)


class Create(base.Base):
    """
    Create Command Class.

    .. program:: molecule create

    .. option:: molecule create

        Target the default scenario.

    .. program:: molecule create --scenario-name foo

    .. option:: molecule create --scenario-name foo

        Targeting a specific scenario.

    .. program:: molecule create --driver-name foo

    .. option:: molecule create --driver-name foo

        Targeting a specific driver.

    .. program:: molecule --debug create

    .. option:: molecule --debug create

        Executing with `debug`.

    .. program:: molecule --base-config base.yml create

    .. option:: molecule --base-config base.yml create

        Executing with a `base-config`.

    .. program:: molecule --env-file foo.yml create

    .. option:: molecule --env-file foo.yml create

        Load an env file to read variables from when rendering
        molecule.yml.
    """

    def execute(self):
        """
        Execute the actions necessary to perform a `molecule create` and \
        returns None.

        :return: None
        """
        self._config.state.change_state("driver", self._config.driver.name)

        if self._config.driver.delegated and not self._config.driver.managed:
            msg = "Skipping, instances are delegated."
            LOG.warning(msg)
            return

        if self._config.state.created:
            msg = "Skipping, instances already created."
            LOG.warning(msg)
            return

        self._config.provisioner.create()

        self._config.state.change_state("created", True)


@base.click_command_ex()
@click.pass_context
@click.option(
    "--scenario-name",
    "-s",
    default=base.MOLECULE_DEFAULT_SCENARIO_NAME,
    help="Name of the scenario to target. ({})".format(
        base.MOLECULE_DEFAULT_SCENARIO_NAME
    ),
)
@click.option(
    "--driver-name",
    "-d",
    type=click.Choice([str(s) for s in drivers()]),
    help=f"Name of driver to use. ({DEFAULT_DRIVER})",
)
def create(ctx, scenario_name, driver_name):  # pragma: no cover
    """Use the provisioner to start the instances."""
    args = ctx.obj.get("args")
    subcommand = base._get_subcommand(__name__)
    command_args = {"subcommand": subcommand, "driver_name": driver_name}

    base.execute_cmdline_scenarios(scenario_name, args, command_args)