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import json
import os
from tempfile import mkstemp

from airflow.configuration import conf


def tmp_configuration_copy(chmod=0o600, include_env=True, include_cmds=True):
    """
    Returns a path for a temporary file including a full copy of the configuration
    settings.

    :param include_env: Should the value of configuration from ``AIRFLOW__``
        environment variables be included or not
    :type include_env: bool
    :param include_cmds: Should the result of calling any *_cmd config be
        set (True, default), or should the _cmd options be left as the
        command to run (False)
    :type include_cmds: bool
    :return: a path to a temporary file
    """
    cfg_dict = conf.as_dict(
        display_sensitive=True, raw=True, include_cmds=include_cmds, include_env=include_env
    )
    temp_fd, cfg_path = mkstemp()

    with os.fdopen(temp_fd, 'w') as temp_file:
        # Set the permissions before we write anything to it.
        if chmod is not None:
            os.fchmod(temp_fd, chmod)
        json.dump(cfg_dict, temp_file)

    return cfg_path