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

import logging

from molecule import util

LOG = logging.getLogger(__name__)


class Platforms:
    """Platforms define the instances to be tested, and the groups to which the \
    instances belong.

    ``` yaml

        platforms:
          - name: instance-1
    ```

    Multiple instances can be provided.

    ``` yaml
        platforms:
          - name: instance-1
          - name: instance-2
    ```

    Mapping instances to groups.  These groups will be used by the Provisioner_
    for orchestration purposes.

    ``` yaml
        platforms:
          - name: instance-1
            groups:
              - group1
              - group2
    ```

    Children allow the creation of groups of groups.

    ``` yaml
        platforms:
          - name: instance-1
            groups:
              - group1
              - group2
            children:
              - child_group1
    ```
    """

    def __init__(self, config, parallelize_platforms=False, platform_name=None) -> None:
        """Initialize a new platform class and returns None.

        :param config: An instance of a Molecule config.
        :param parallelize_platforms: Parallel mode. Default is False.
        :param platform_name: One platform to target only, defaults to None.
        :return: None
        """
        if platform_name:
            config.config["platforms"] = util._filter_platforms(
                config.config,
                platform_name,
            )  # type: ignore
        if parallelize_platforms:
            config.config["platforms"] = util._parallelize_platforms(
                config.config,
                config._run_uuid,
            )  # type: ignore
        self._config = config

    @property
    def instances(self):
        return self._config.config["platforms"]
