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

import logging
import os

import click

from molecule import util
from molecule.command import base

LOG = logging.getLogger(__name__)
MOLECULE_PARALLEL = os.environ.get("MOLECULE_PARALLEL", False)


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

    .. program:: molecule check

    .. option:: molecule check

        Target the default scenario.

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

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

        Targeting a specific scenario.

    .. program:: molecule --debug check

    .. option:: molecule --debug check

        Executing with `debug`.

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

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

        Executing with a `base-config`.

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

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

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

    .. program:: molecule check --parallel

    .. option:: molecule check --parallel

       Run in parallelizable mode.
    """

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

        :return: None
        """
        self._config.provisioner.check()


@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(
    "--parallel/--no-parallel",
    default=MOLECULE_PARALLEL,
    help="Enable or disable parallel mode. Default is disabled.",
)
def check(ctx, scenario_name, parallel):  # pragma: no cover
    """Use the provisioner to perform a Dry-Run (destroy, dependency, create, \
    prepare, converge)."""
    args = ctx.obj.get("args")
    subcommand = base._get_subcommand(__name__)
    command_args = {"parallel": parallel, "subcommand": subcommand}

    if parallel:
        util.validate_parallel_cmd_args(command_args)

    base.execute_cmdline_scenarios(scenario_name, args, command_args)