# -*- coding: utf-8 -*-
"""
Manage groups on Solaris

.. important::
    If you feel that Salt should be using this module to manage groups on a
    minion, and it is using a different module (or gives an error similar to
    *'group.info' is not available*), see :ref:`here
    <module-provider-override>`.
"""
from __future__ import absolute_import, print_function, unicode_literals

# Import python libs
import logging

# Import salt libs
import salt.utils.data

log = logging.getLogger(__name__)


try:
    import grp
except ImportError:
    pass

# Define the module's virtual name
__virtualname__ = "group"


def __virtual__():
    """
    Set the group module if the kernel is SunOS
    """
    if __grains__["kernel"] == "SunOS":
        return __virtualname__
    return (
        False,
        "The solaris_group execution module failed to load: "
        "only available on Solaris systems.",
    )


def add(name, gid=None, **kwargs):
    """
    Add the specified group

    CLI Example:

    .. code-block:: bash

        salt '*' group.add foo 3456
    """
    if salt.utils.data.is_true(kwargs.pop("system", False)):
        log.warning("solaris_group module does not support the 'system' " "argument")
    if kwargs:
        log.warning("Invalid kwargs passed to group.add")

    cmd = "groupadd "
    if gid:
        cmd += "-g {0} ".format(gid)
    cmd += name

    ret = __salt__["cmd.run_all"](cmd, python_shell=False)

    return not ret["retcode"]


def delete(name):
    """
    Remove the named group

    CLI Example:

    .. code-block:: bash

        salt '*' group.delete foo
    """
    ret = __salt__["cmd.run_all"]("groupdel {0}".format(name), python_shell=False)

    return not ret["retcode"]


def info(name):
    """
    Return information about a group

    CLI Example:

    .. code-block:: bash

        salt '*' group.info foo
    """
    try:
        grinfo = grp.getgrnam(name)
    except KeyError:
        return {}
    else:
        return {
            "name": grinfo.gr_name,
            "passwd": grinfo.gr_passwd,
            "gid": grinfo.gr_gid,
            "members": grinfo.gr_mem,
        }


def getent(refresh=False):
    """
    Return info on all groups

    CLI Example:

    .. code-block:: bash

        salt '*' group.getent
    """
    if "group.getent" in __context__ and not refresh:
        return __context__["group.getent"]

    ret = []
    for grinfo in grp.getgrall():
        ret.append(info(grinfo.gr_name))

    __context__["group.getent"] = ret
    return ret


def chgid(name, gid):
    """
    Change the gid for a named group

    CLI Example:

    .. code-block:: bash

        salt '*' group.chgid foo 4376
    """
    pre_gid = __salt__["file.group_to_gid"](name)
    if gid == pre_gid:
        return True
    cmd = "groupmod -g {0} {1}".format(gid, name)
    __salt__["cmd.run"](cmd, python_shell=False)
    post_gid = __salt__["file.group_to_gid"](name)
    if post_gid != pre_gid:
        return post_gid == gid
    return False
