#  Copyright (c) 2015-2018 Cisco Systems, Inc.
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"""Base class used by init role command."""

import os
import click
import subprocess
from molecule import api
from molecule import logger
from molecule import util
from molecule.command import base as command_base
from molecule.command.init import base
from subprocess import check_output

LOG = logger.get_logger(__name__)


class Role(base.Base):
    """
    Init Role Command Class.

    .. program:: molecule init role foo

    .. option:: molecule init role foo

        Initialize a new role.

    .. program:: molecule init role foo --template path

    .. option:: molecule init role foo --template path

        Initialize a new role using ansible-galaxy and include default
        molecule directory. Please refer to the ``init scenario``
        command in order to generate a custom ``molecule`` scenario.
    """

    def __init__(self, command_args):
        """Construct Role."""
        self._command_args = command_args

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

        :return: None
        """
        role_name = self._command_args["role_name"]
        role_directory = os.getcwd()
        msg = "Initializing new role {}...".format(role_name)
        LOG.info(msg)

        if os.path.isdir(role_name):
            msg = ("The directory {} exists. " "Cannot create new role.").format(
                role_name
            )
            util.sysexit_with_message(msg)

        try:
            cmd = ["ansible-galaxy", "init", "-v", "--offline", role_name]
            check_output(cmd, stderr=subprocess.STDOUT, universal_newlines=True)
        except Exception as e:
            util.sysexit_with_message(
                "Galaxy failed to create role: %s: %s" % (e, e.output)
            )

        scenario_base_directory = os.path.join(role_directory, role_name)
        templates = [
            api.drivers()[self._command_args["driver_name"]].template_dir(),
            api.verifiers()[self._command_args["verifier_name"]].template_dir(),
        ]
        self._process_templates("molecule", self._command_args, role_directory)
        for template in templates:
            self._process_templates(
                template, self._command_args, scenario_base_directory
            )

        role_directory = os.path.join(role_directory, role_name)
        msg = "Initialized role in {} successfully.".format(role_directory)
        LOG.success(msg)


@command_base.click_command_ex()
@click.pass_context
@click.option(
    "--dependency-name",
    type=click.Choice(["galaxy"]),
    default="galaxy",
    help="Name of dependency to initialize. (galaxy)",
)
@click.option(
    "--driver-name",
    "-d",
    type=click.Choice([str(s) for s in api.drivers()]),
    default="docker",
    help="Name of driver to initialize. (docker)",
)
@click.option(
    "--lint-name",
    type=click.Choice(["yamllint"]),
    default="yamllint",
    help="Name of lint to initialize. (yamllint)",
)
@click.option(
    "--provisioner-name",
    type=click.Choice(["ansible"]),
    default="ansible",
    help="Name of provisioner to initialize. (ansible)",
)
@click.argument("ROLE-NAME", required=True)
@click.option(
    "--verifier-name",
    type=click.Choice([str(s) for s in api.verifiers()]),
    default="ansible",
    help="Name of verifier to initialize. (ansible)",
)
def role(
    ctx,
    dependency_name,
    driver_name,
    lint_name,
    provisioner_name,
    role_name,
    verifier_name,
):  # pragma: no cover
    """Initialize a new role for use with Molecule."""
    command_args = {
        "dependency_name": dependency_name,
        "driver_name": driver_name,
        "lint_name": lint_name,
        "provisioner_name": provisioner_name,
        "role_name": role_name,
        "scenario_name": command_base.MOLECULE_DEFAULT_SCENARIO_NAME,
        "subcommand": __name__,
        "verifier_name": verifier_name,
    }

    r = Role(command_args)
    r.execute()
