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"""
Module for managing Windows systems and getting Windows system information.
Support for reboot, shutdown, join domain, rename

:depends:
    - pywintypes
    - win32api
    - win32con
    - win32net
    - wmi
"""

import ctypes
import logging
import platform
import time
from datetime import datetime

import salt.utils.functools
import salt.utils.locales
import salt.utils.platform
import salt.utils.win_system
import salt.utils.winapi
from salt.exceptions import CommandExecutionError

try:
    from ctypes import windll

    import pywintypes
    import win32api
    import win32con
    import win32net
    import wmi

    HAS_WIN32NET_MODS = True
except ImportError:
    HAS_WIN32NET_MODS = False

# Set up logging
log = logging.getLogger(__name__)

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


def __virtual__():
    """
    Only works on Windows Systems with Win32 Modules
    """
    if not salt.utils.platform.is_windows():
        return False, "Module win_system: Requires Windows"

    if not HAS_WIN32NET_MODS:
        return False, "Module win_system: Missing win32 modules"

    return __virtualname__


def _convert_minutes_seconds(timeout, in_seconds=False):
    """
    convert timeout to seconds
    """
    return timeout if in_seconds else timeout * 60


def _convert_date_time_string(dt_string):
    """
    convert string to date time object
    """
    dt_string = dt_string.split(".")[0]
    dt_obj = datetime.strptime(dt_string, "%Y%m%d%H%M%S")
    return dt_obj.strftime("%Y-%m-%d %H:%M:%S")


def halt(timeout=5, in_seconds=False):
    """
    Halt a running system.

    Args:

        timeout (int):
            Number of seconds before halting the system. Default is 5 seconds.

        in_seconds (bool):
            Whether to treat timeout as seconds or minutes.

            .. versionadded:: 2015.8.0

    Returns:
        bool: ``True`` if successful, otherwise ``False``

    CLI Example:

    .. code-block:: bash

        salt '*' system.halt 5 True
    """
    return shutdown(timeout=timeout, in_seconds=in_seconds)


def init(runlevel):  # pylint: disable=unused-argument
    """
    Change the system runlevel on sysV compatible systems. Not applicable to
    Windows

    CLI Example:

    .. code-block:: bash

        salt '*' system.init 3
    """
    # cmd = ['init', runlevel]
    # ret = __salt__['cmd.run'](cmd, python_shell=False)
    # return ret

    # TODO: Create a mapping of runlevels to  # pylint: disable=fixme
    #       corresponding Windows actions

    return "Not implemented on Windows at this time."


def poweroff(timeout=5, in_seconds=False):
    """
    Power off a running system.

    Args:

        timeout (int):
            Number of seconds before powering off the system. Default is 5
            seconds.

        in_seconds (bool):
            Whether to treat timeout as seconds or minutes.

            .. versionadded:: 2015.8.0

    Returns:
        bool: ``True`` if successful, otherwise ``False``

    CLI Example:

    .. code-block:: bash

        salt '*' system.poweroff 5
    """
    return shutdown(timeout=timeout, in_seconds=in_seconds)


def reboot(
    timeout=5,
    in_seconds=False,
    wait_for_reboot=False,  # pylint: disable=redefined-outer-name
    only_on_pending_reboot=False,
):
    """
    Reboot a running system.

    Args:

        timeout (int):
            The number of minutes/seconds before rebooting the system. Use of
            minutes or seconds depends on the value of ``in_seconds``. Default
            is 5 minutes.

        in_seconds (bool):
            ``True`` will cause the ``timeout`` parameter to be in seconds.
             ``False`` will be in minutes. Default is ``False``.

            .. versionadded:: 2015.8.0

        wait_for_reboot (bool)
            ``True`` will sleep for timeout + 30 seconds after reboot has been
            initiated. This is useful for use in a highstate. For example, you
            may have states that you want to apply only after the reboot.
            Default is ``False``.

            .. versionadded:: 2015.8.0

        only_on_pending_reboot (bool):
            If this is set to ``True``, then the reboot will only proceed
            if the system reports a pending reboot. Setting this parameter to
            ``True`` could be useful when calling this function from a final
            housekeeping state intended to be executed at the end of a state run
            (using *order: last*). Default is ``False``.

    Returns:
        bool: ``True`` if successful (a reboot will occur), otherwise ``False``

    CLI Example:

    .. code-block:: bash

        salt '*' system.reboot 5
        salt '*' system.reboot 5 True

    Invoking this function from a final housekeeping state:

    .. code-block:: yaml

        final_housekeeping:
           module.run:
              - name: system.reboot
              - only_on_pending_reboot: True
              - order: last
    """
    ret = shutdown(
        timeout=timeout,
        reboot=True,
        in_seconds=in_seconds,
        only_on_pending_reboot=only_on_pending_reboot,
    )

    if wait_for_reboot:
        seconds = _convert_minutes_seconds(timeout, in_seconds)
        time.sleep(seconds + 30)

    return ret


def shutdown(
    message=None,
    timeout=5,
    force_close=True,
    reboot=False,  # pylint: disable=redefined-outer-name
    in_seconds=False,
    only_on_pending_reboot=False,
):
    """
    Shutdown a running system.

    Args:

        message (str):
            The message to display to the user before shutting down.

        timeout (int):
            The length of time (in seconds) that the shutdown dialog box should
            be displayed. While this dialog box is displayed, the shutdown can
            be aborted using the ``system.shutdown_abort`` function.

            If timeout is not zero, InitiateSystemShutdown displays a dialog box
            on the specified computer. The dialog box displays the name of the
            user who called the function, the message specified by the lpMessage
            parameter, and prompts the user to log off. The dialog box beeps
            when it is created and remains on top of other windows (system
            modal). The dialog box can be moved but not closed. A timer counts
            down the remaining time before the shutdown occurs.

            If timeout is zero, the computer shuts down immediately without
            displaying the dialog box and cannot be stopped by
            ``system.shutdown_abort``.

            Default is 5 minutes

        in_seconds (bool):
            ``True`` will cause the ``timeout`` parameter to be in seconds.
             ``False`` will be in minutes. Default is ``False``.

            .. versionadded:: 2015.8.0

        force_close (bool):
            ``True`` will force close all open applications. ``False`` will
            display a dialog box instructing the user to close open
            applications. Default is ``True``.

        reboot (bool):
            ``True`` restarts the computer immediately after shutdown. ``False``
            powers down the system. Default is ``False``.

        only_on_pending_reboot (bool): If this is set to True, then the shutdown
            will only proceed if the system reports a pending reboot. To
            optionally shutdown in a highstate, consider using the shutdown
            state instead of this module.

        only_on_pending_reboot (bool):
            If ``True`` the shutdown will only proceed if there is a reboot
            pending. ``False`` will shutdown the system. Default is ``False``.

    Returns:
        bool:
            ``True`` if successful (a shutdown or reboot will occur), otherwise
            ``False``

    CLI Example:

    .. code-block:: bash

        salt '*' system.shutdown "System will shutdown in 5 minutes"
    """
    timeout = _convert_minutes_seconds(timeout, in_seconds)

    if only_on_pending_reboot and not get_pending_reboot():
        return False

    if message and not isinstance(message, str):
        message = message.decode("utf-8")
    try:
        win32api.InitiateSystemShutdown(
            "127.0.0.1", message, timeout, force_close, reboot
        )
        return True
    except pywintypes.error as exc:
        (number, context, message) = exc.args
        log.error("Failed to shutdown the system")
        log.error("nbr: %s", number)
        log.error("ctx: %s", context)
        log.error("msg: %s", message)
        return False


def shutdown_hard():
    """
    Shutdown a running system with no timeout or warning.

    Returns:
        bool: ``True`` if successful, otherwise ``False``

    CLI Example:

    .. code-block:: bash

        salt '*' system.shutdown_hard
    """
    return shutdown(timeout=0)


def shutdown_abort():
    """
    Abort a shutdown. Only available while the dialog box is being
    displayed to the user. Once the shutdown has initiated, it cannot be
    aborted.

    Returns:
        bool: ``True`` if successful, otherwise ``False``

    CLI Example:

    .. code-block:: bash

        salt 'minion-id' system.shutdown_abort
    """
    try:
        win32api.AbortSystemShutdown("127.0.0.1")
        return True
    except pywintypes.error as exc:
        (number, context, message) = exc.args
        log.error("Failed to abort system shutdown")
        log.error("nbr: %s", number)
        log.error("ctx: %s", context)
        log.error("msg: %s", message)
        return False


def lock():
    """
    Lock the workstation.

    Returns:
        bool: ``True`` if successful, otherwise ``False``

    CLI Example:

    .. code-block:: bash

        salt 'minion-id' system.lock
    """
    return windll.user32.LockWorkStation()


def set_computer_name(name):
    """
    Set the Windows computer name

    Args:

        name (str):
            The new name to give the computer. Requires a reboot to take effect.

    Returns:
        dict:
            Returns a dictionary containing the old and new names if successful.
            ``False`` if not.

    CLI Example:

    .. code-block:: bash

        salt 'minion-id' system.set_computer_name 'DavesComputer'
    """
    if windll.kernel32.SetComputerNameExW(
        win32con.ComputerNamePhysicalDnsHostname, name
    ):
        ret = {"Computer Name": {"Current": get_computer_name()}}
        pending = get_pending_computer_name()
        if pending not in (None, False):
            ret["Computer Name"]["Pending"] = pending
        return ret

    return False


def get_pending_computer_name():
    """
    Get a pending computer name. If the computer name has been changed, and the
    change is pending a system reboot, this function will return the pending
    computer name. Otherwise, ``None`` will be returned. If there was an error
    retrieving the pending computer name, ``False`` will be returned, and an
    error message will be logged to the minion log.

    Returns:
        str:
            Returns the pending name if pending restart. Returns ``None`` if not
            pending restart.

    CLI Example:

    .. code-block:: bash

        salt 'minion-id' system.get_pending_computer_name
    """
    return salt.utils.win_system.get_pending_computer_name()


def get_computer_name():
    """
    Get the Windows computer name

    Returns:
        str: Returns the computer name if found. Otherwise returns ``False``.

    CLI Example:

    .. code-block:: bash

        salt 'minion-id' system.get_computer_name
    """
    return salt.utils.win_system.get_computer_name()


def set_computer_desc(desc=None):
    """
    Set the Windows computer description

    Args:

        desc (str):
            The computer description

    Returns:
        str: Description if successful, otherwise ``False``

    CLI Example:

    .. code-block:: bash

        salt 'minion-id' system.set_computer_desc 'This computer belongs to Dave!'
    """
    # Make sure the system exists
    # Return an object containing current information array for the computer
    system_info = win32net.NetServerGetInfo(None, 101)

    # If desc is passed, decode it for unicode
    if desc is None:
        return False

    system_info["comment"] = desc

    # Apply new settings
    try:
        win32net.NetServerSetInfo(None, 101, system_info)
    except win32net.error as exc:
        (number, context, message) = exc.args
        log.error("Failed to update system")
        log.error("nbr: %s", number)
        log.error("ctx: %s", context)
        log.error("msg: %s", message)
        return False

    return {"Computer Description": get_computer_desc()}


# pylint: disable=invalid-name
set_computer_description = salt.utils.functools.alias_function(
    set_computer_desc, "set_computer_description"
)
# pylint: enable=invalid-name


def get_system_info():
    """
    Get system information.

    .. note::

        Not all system info is available across all versions of Windows. If it
        is not available on an older version, it will be skipped

    Returns:
        dict: Dictionary containing information about the system to include
        name, description, version, etc...

    CLI Example:

    .. code-block:: bash

        salt 'minion-id' system.get_system_info
    """

    def byte_calc(val):
        val = float(val)
        if val < 2**10:
            return f"{val:.3f}B"
        elif val < 2**20:
            return f"{val / 2**10:.3f}KB"
        elif val < 2**30:
            return f"{val / 2**20:.3f}MB"
        elif val < 2**40:
            return f"{val / 2**30:.3f}GB"
        else:
            return f"{val / 2**40:.3f}TB"

    # Lookup dicts for Win32_OperatingSystem
    os_type = {1: "Work Station", 2: "Domain Controller", 3: "Server"}
    # lookup dicts for Win32_ComputerSystem
    domain_role = {
        0: "Standalone Workstation",
        1: "Member Workstation",
        2: "Standalone Server",
        3: "Member Server",
        4: "Backup Domain Controller",
        5: "Primary Domain Controller",
    }
    warning_states = {
        1: "Other",
        2: "Unknown",
        3: "Safe",
        4: "Warning",
        5: "Critical",
        6: "Non-recoverable",
    }
    pc_system_types = {
        0: "Unspecified",
        1: "Desktop",
        2: "Mobile",
        3: "Workstation",
        4: "Enterprise Server",
        5: "SOHO Server",
        6: "Appliance PC",
        7: "Performance Server",
        8: "Maximum",
    }

    # Connect to WMI
    with salt.utils.winapi.Com():
        conn = wmi.WMI()

        system = conn.Win32_OperatingSystem()[0]
        ret = {
            "name": get_computer_name(),
            "description": system.Description,
            "install_date": system.InstallDate,
            "last_boot": system.LastBootUpTime,
            "os_manufacturer": system.Manufacturer,
            "os_name": system.Caption,
            "users": system.NumberOfUsers,
            "organization": system.Organization,
            "os_architecture": system.OSArchitecture,
            "primary": system.Primary,
            "os_type": os_type[system.ProductType],
            "registered_user": system.RegisteredUser,
            "system_directory": system.SystemDirectory,
            "system_drive": system.SystemDrive,
            "os_version": system.Version,
            "windows_directory": system.WindowsDirectory,
        }
        # Must get chassis_sku_number this way for backwards compatibility
        # system.ChassisSKUNumber is only available on Windows 10/2016 and newer
        product = conn.Win32_ComputerSystemProduct()[0]
        ret.update({"chassis_sku_number": product.SKUNumber})
        system = conn.Win32_ComputerSystem()[0]
        # Get pc_system_type depending on Windows version
        if platform.release() in ["Vista", "7", "8"]:
            # Types for Vista, 7, and 8
            pc_system_type = pc_system_types[system.PCSystemType]
        else:
            # New types were added with 8.1 and newer
            pc_system_types.update({8: "Slate", 9: "Maximum"})
            pc_system_type = pc_system_types[system.PCSystemType]
        ret.update(
            {
                "bootup_state": system.BootupState,
                "caption": system.Caption,
                "chassis_bootup_state": warning_states[system.ChassisBootupState],
                "dns_hostname": system.DNSHostname,
                "domain": system.Domain,
                "domain_role": domain_role[system.DomainRole],
                "hardware_manufacturer": system.Manufacturer,
                "hardware_model": system.Model,
                "network_server_mode_enabled": system.NetworkServerModeEnabled,
                "part_of_domain": system.PartOfDomain,
                "pc_system_type": pc_system_type,
                "power_state": system.PowerState,
                "status": system.Status,
                "system_type": system.SystemType,
                "total_physical_memory": byte_calc(system.TotalPhysicalMemory),
                "total_physical_memory_raw": system.TotalPhysicalMemory,
                "thermal_state": warning_states[system.ThermalState],
                "workgroup": system.Workgroup,
            }
        )
        # Get processor information
        processors = conn.Win32_Processor()
        ret["processors"] = 0
        ret["processors_logical"] = 0
        ret["processor_cores"] = 0
        ret["processor_cores_enabled"] = 0
        ret["processor_manufacturer"] = processors[0].Manufacturer
        ret["processor_max_clock_speed"] = str(processors[0].MaxClockSpeed) + "MHz"
        for processor in processors:
            ret["processors"] += 1
            ret["processors_logical"] += processor.NumberOfLogicalProcessors
            ret["processor_cores"] += processor.NumberOfCores
            # Older versions of Windows do not have the NumberOfEnabledCore
            # property. In that case, we'll just skip it
            try:
                ret["processor_cores_enabled"] += processor.NumberOfEnabledCore
            except (AttributeError, TypeError):
                pass
        if ret["processor_cores_enabled"] == 0:
            ret.pop("processor_cores_enabled", False)

        bios = conn.Win32_BIOS()[0]
        ret.update(
            {
                "hardware_serial": bios.SerialNumber,
                "bios_manufacturer": bios.Manufacturer,
                "bios_version": bios.Version,
                "bios_details": bios.BIOSVersion,
                "bios_caption": bios.Caption,
                "bios_description": bios.Description,
            }
        )
        ret["install_date"] = _convert_date_time_string(ret["install_date"])
        ret["last_boot"] = _convert_date_time_string(ret["last_boot"])
    return ret


def get_computer_desc():
    """
    Get the Windows computer description

    Returns:
        str: Returns the computer description if found. Otherwise returns
        ``False``.

    CLI Example:

    .. code-block:: bash

        salt 'minion-id' system.get_computer_desc
    """
    desc = get_system_info()["description"]
    return False if desc is None else desc


# pylint: disable=invalid-name
get_computer_description = salt.utils.functools.alias_function(
    get_computer_desc, "get_computer_description"
)
# pylint: enable=invalid-name


def get_hostname():
    """
    Get the hostname of the windows minion

    .. versionadded:: 2016.3.0

    Returns:
        str: Returns the hostname of the windows minion

    CLI Example:

    .. code-block:: bash

        salt 'minion-id' system.get_hostname
    """
    cmd = "hostname"
    ret = __salt__["cmd.run"](cmd=cmd)
    return ret


def set_hostname(hostname):
    """
    Set the hostname of the windows minion, requires a restart before this will
    be updated.

    .. versionadded:: 2016.3.0

    Args:
        hostname (str): The hostname to set

    Returns:
        bool: ``True`` if successful, otherwise ``False``

    CLI Example:

    .. code-block:: bash

        salt 'minion-id' system.set_hostname newhostname
    """
    with salt.utils.winapi.Com():
        conn = wmi.WMI()
        comp = conn.Win32_ComputerSystem()[0]
        return comp.Rename(Name=hostname)


def join_domain(
    domain,
    username=None,
    password=None,
    account_ou=None,
    account_exists=False,
    restart=False,
):
    """
    Join a computer to an Active Directory domain. Requires a reboot.

    Args:

        domain (str):
            The domain to which the computer should be joined, e.g.
            ``example.com``

        username (str):
            Username of an account which is authorized to join computers to the
            specified domain. Needs to be either fully qualified like
            ``user@domain.tld`` or simply ``user``

        password (str):
            Password of the specified user

        account_ou (str):
            The DN of the OU below which the account for this computer should be
            created when joining the domain, e.g.
            ``ou=computers,ou=departm_432,dc=my-company,dc=com``

        account_exists (bool):
            If set to ``True`` the computer will only join the domain if the
            account already exists. If set to ``False`` the computer account
            will be created if it does not exist, otherwise it will use the
            existing account. Default is ``False``

        restart (bool):
            ``True`` will restart the computer after a successful join. Default
            is ``False``

            .. versionadded:: 2015.5.7,2015.8.2

    Returns:
        dict: Returns a dictionary if successful, otherwise ``False``

    CLI Example:

    .. code-block:: bash

        salt 'minion-id' system.join_domain domain='domain.tld' \\
                         username='joinuser' password='joinpassword' \\
                         account_ou='ou=clients,ou=org,dc=domain,dc=tld' \\
                         account_exists=False, restart=True
    """
    status = get_domain_workgroup()
    if "Domain" in status:
        if status["Domain"] == domain:
            return f"Already joined to {domain}"

    if username and "\\" not in username and "@" not in username:
        username = f"{username}@{domain}"

    if username and password is None:
        return "Must specify a password if you pass a username"

    # remove any escape characters
    if isinstance(account_ou, str):
        account_ou = account_ou.split("\\")
        account_ou = "".join(account_ou)

    err = _join_domain(
        domain=domain,
        username=username,
        password=password,
        account_ou=account_ou,
        account_exists=account_exists,
    )

    if not err:
        ret = {"Domain": domain, "Restart": False}
        if restart:
            ret["Restart"] = reboot()
        return ret

    raise CommandExecutionError(win32api.FormatMessage(err).rstrip())


def _join_domain(
    domain, username=None, password=None, account_ou=None, account_exists=False
):
    """
    Helper function to join the domain.

    Args:
        domain (str): The domain to which the computer should be joined, e.g.
            ``example.com``

        username (str): Username of an account which is authorized to join
            computers to the specified domain. Need to be either fully qualified
            like ``user@domain.tld`` or simply ``user``

        password (str): Password of the specified user

        account_ou (str): The DN of the OU below which the account for this
            computer should be created when joining the domain, e.g.
            ``ou=computers,ou=departm_432,dc=my-company,dc=com``

        account_exists (bool): If set to ``True`` the computer will only join
            the domain if the account already exists. If set to ``False`` the
            computer account will be created if it does not exist, otherwise it
            will use the existing account. Default is False.

    Returns:
        int:
    """
    NETSETUP_JOIN_DOMAIN = 0x1  # pylint: disable=invalid-name
    NETSETUP_ACCOUNT_CREATE = 0x2  # pylint: disable=invalid-name
    NETSETUP_DOMAIN_JOIN_IF_JOINED = 0x20  # pylint: disable=invalid-name
    NETSETUP_JOIN_WITH_NEW_NAME = 0x400  # pylint: disable=invalid-name

    join_options = 0x0
    join_options |= NETSETUP_JOIN_DOMAIN
    join_options |= NETSETUP_DOMAIN_JOIN_IF_JOINED
    join_options |= NETSETUP_JOIN_WITH_NEW_NAME
    if not account_exists:
        join_options |= NETSETUP_ACCOUNT_CREATE

    with salt.utils.winapi.Com():
        conn = wmi.WMI()
        comp = conn.Win32_ComputerSystem()[0]

        # Return the results of the command as an error
        # JoinDomainOrWorkgroup returns a strangely formatted value that looks like
        # (0,) so return the first item
        return comp.JoinDomainOrWorkgroup(
            Name=domain,
            Password=password,
            UserName=username,
            AccountOU=account_ou,
            FJoinOptions=join_options,
        )[0]


def unjoin_domain(
    username=None,
    password=None,
    domain=None,
    workgroup="WORKGROUP",
    disable=False,
    restart=False,
):
    # pylint: disable=anomalous-backslash-in-string
    """
    Unjoin a computer from an Active Directory Domain. Requires a restart.

    Args:

        username (str):
            Username of an account which is authorized to manage computer
            accounts on the domain. Needs to be a fully qualified name like
            ``user@domain.tld`` or ``domain.tld\\user``. If the domain is not
            specified, the passed domain will be used. If the computer account
            doesn't need to be disabled after the computer is unjoined, this can
            be ``None``.

        password (str):
            The password of the specified user

        domain (str):
            The domain from which to unjoin the computer. Can be ``None``

        workgroup (str):
            The workgroup to join the computer to. Default is ``WORKGROUP``

            .. versionadded:: 2015.5.7,2015.8.2

        disable (bool):
            ``True`` to disable the computer account in Active Directory.
            Default is ``False``

        restart (bool):
            ``True`` will restart the computer after successful unjoin. Default
            is ``False``

            .. versionadded:: 2015.5.7,2015.8.2

    Returns:
        dict: Returns a dictionary if successful, otherwise ``False``

    CLI Example:

    .. code-block:: bash

        salt 'minion-id' system.unjoin_domain restart=True

        salt 'minion-id' system.unjoin_domain username='unjoinuser' \\
                         password='unjoinpassword' disable=True \\
                         restart=True
    """
    # pylint: enable=anomalous-backslash-in-string
    status = get_domain_workgroup()
    if "Workgroup" in status:
        if status["Workgroup"] == workgroup:
            return f"Already joined to {workgroup}"

    if username and "\\" not in username and "@" not in username:
        if domain:
            username = f"{username}@{domain}"
        else:
            return "Must specify domain if not supplied in username"

    if username and password is None:
        return "Must specify a password if you pass a username"

    NETSETUP_ACCT_DELETE = 0x4  # pylint: disable=invalid-name

    unjoin_options = 0x0
    if disable:
        unjoin_options |= NETSETUP_ACCT_DELETE

    with salt.utils.winapi.Com():
        conn = wmi.WMI()
        comp = conn.Win32_ComputerSystem()[0]
        err = comp.UnjoinDomainOrWorkgroup(
            Password=password, UserName=username, FUnjoinOptions=unjoin_options
        )

        # you have to do this because UnjoinDomainOrWorkgroup returns a
        # strangely formatted value that looks like (0,)
        if not err[0]:
            err = comp.JoinDomainOrWorkgroup(Name=workgroup)
            if not err[0]:
                ret = {"Workgroup": workgroup, "Restart": False}
                if restart:
                    ret["Restart"] = reboot()

                return ret
            else:
                log.error(win32api.FormatMessage(err[0]).rstrip())
                log.error("Failed to unjoin the computer from %s", workgroup)
                return False
        else:
            log.error(win32api.FormatMessage(err[0]).rstrip())
            log.error("Failed to unjoin computer from %s", status["Domain"])
            return False


def get_domain_workgroup():
    """
    Get the domain or workgroup the computer belongs to.

    .. versionadded:: 2015.5.7
    .. versionadded:: 2015.8.2

    Returns:
        str: The name of the domain or workgroup

    CLI Example:

    .. code-block:: bash

        salt 'minion-id' system.get_domain_workgroup
    """
    with salt.utils.winapi.Com():
        conn = wmi.WMI()
        for computer in conn.Win32_ComputerSystem():
            if computer.PartOfDomain:
                return {"Domain": computer.Domain}
            else:
                return {"Workgroup": computer.Domain}


def set_domain_workgroup(workgroup):
    """
    Set the domain or workgroup the computer belongs to.

    .. versionadded:: 3001

    Returns:
        bool: ``True`` if successful, otherwise ``False``

    CLI Example:

    .. code-block:: bash

        salt 'minion-id' system.set_domain_workgroup LOCAL
    """
    # Initialize COM
    with salt.utils.winapi.Com():
        # Grab the first Win32_ComputerSystem object from wmi
        conn = wmi.WMI()
        comp = conn.Win32_ComputerSystem()[0]

        # Now we can join the new workgroup
        res = comp.JoinDomainOrWorkgroup(Name=workgroup.upper())

    return True if not res[0] else False


def _try_parse_datetime(time_str, fmts):
    """
    A helper function that attempts to parse the input time_str as a date.

    Args:

        time_str (str): A string representing the time

        fmts (list): A list of date format strings

    Returns:
        datetime: Returns a datetime object if parsed properly, otherwise None
    """
    result = None
    for fmt in fmts:
        try:
            result = datetime.strptime(time_str, fmt)
            break
        except ValueError:
            pass
    return result


def get_system_time():
    """
    Get the system time.

    Returns:
        str: Returns the system time in HH:MM:SS AM/PM format.

    CLI Example:

    .. code-block:: bash

        salt 'minion-id' system.get_system_time
    """
    now = win32api.GetLocalTime()
    meridian = "AM"
    hours = int(now[4])
    if hours == 12:
        meridian = "PM"
    elif hours == 0:
        hours = 12
    elif hours > 12:
        hours = hours - 12
        meridian = "PM"
    return f"{hours:02d}:{now[5]:02d}:{now[6]:02d} {meridian}"


def set_system_time(newtime):
    """
    Set the system time.

    Args:

        newtime (str):
            The time to set. Can be any of the following formats:

            - HH:MM:SS AM/PM
            - HH:MM AM/PM
            - HH:MM:SS (24 hour)
            - HH:MM (24 hour)

    Returns:
        bool: ``True`` if successful, otherwise ``False``

    CLI Example:

    .. code-block:: bash

        salt 'minion-id' system.set_system_time 12:01
    """
    # Get date/time object from newtime
    fmts = ["%I:%M:%S %p", "%I:%M %p", "%H:%M:%S", "%H:%M"]
    dt_obj = _try_parse_datetime(newtime, fmts)
    if dt_obj is None:
        return False

    # Set time using set_system_date_time()
    return set_system_date_time(
        hours=dt_obj.hour, minutes=dt_obj.minute, seconds=dt_obj.second
    )


def set_system_date_time(
    years=None, months=None, days=None, hours=None, minutes=None, seconds=None
):
    """
    Set the system date and time. Each argument is an element of the date, but
    not required. If an element is not passed, the current system value for that
    element will be used. For example, if you don't pass the year, the current
    system year will be used. (Used by set_system_date and set_system_time)

    Args:

        years (int): Years digit, ie: 2015
        months (int): Months digit: 1 - 12
        days (int): Days digit: 1 - 31
        hours (int): Hours digit: 0 - 23
        minutes (int): Minutes digit: 0 - 59
        seconds (int): Seconds digit: 0 - 59

    Returns:
        bool: ``True`` if successful, otherwise ``False``

    CLI Example:

    .. code-block:: bash

        salt '*' system.set_system_date_ time 2015 5 12 11 37 53
    """
    # Get the current date/time
    try:
        date_time = win32api.GetLocalTime()
    except win32api.error as exc:
        (number, context, message) = exc.args
        log.error("Failed to get local time")
        log.error("nbr: %s", number)
        log.error("ctx: %s", context)
        log.error("msg: %s", message)
        return False

    # Check for passed values. If not passed, use current values
    if years is None:
        years = date_time[0]
    if months is None:
        months = date_time[1]
    if days is None:
        days = date_time[3]
    if hours is None:
        hours = date_time[4]
    if minutes is None:
        minutes = date_time[5]
    if seconds is None:
        seconds = date_time[6]

    try:

        class SYSTEMTIME(ctypes.Structure):
            _fields_ = [
                ("wYear", ctypes.c_int16),
                ("wMonth", ctypes.c_int16),
                ("wDayOfWeek", ctypes.c_int16),
                ("wDay", ctypes.c_int16),
                ("wHour", ctypes.c_int16),
                ("wMinute", ctypes.c_int16),
                ("wSecond", ctypes.c_int16),
                ("wMilliseconds", ctypes.c_int16),
            ]

        system_time = SYSTEMTIME()
        # pylint: disable=invalid-name
        system_time.wYear = int(years)
        system_time.wMonth = int(months)
        system_time.wDay = int(days)
        system_time.wHour = int(hours)
        system_time.wMinute = int(minutes)
        system_time.wSecond = int(seconds)
        # pylint: enable=invalid-name
        system_time_ptr = ctypes.pointer(system_time)
        succeeded = ctypes.windll.kernel32.SetLocalTime(system_time_ptr)
        if succeeded != 0:
            return True
        else:
            log.error("Failed to set local time")
            raise CommandExecutionError(win32api.FormatMessage(succeeded).rstrip())
    except OSError as err:
        log.error("Failed to set local time")
        raise CommandExecutionError(err)


def get_system_date():
    """
    Get the Windows system date

    Returns:
        str: Returns the system date

    CLI Example:

    .. code-block:: bash

        salt '*' system.get_system_date
    """
    now = win32api.GetLocalTime()
    return f"{now[1]:02d}/{now[3]:02d}/{now[0]:04d}"


def set_system_date(newdate):
    """
    Set the Windows system date. Use <mm-dd-yy> format for the date.

    Args:
        newdate (str):
            The date to set. Can be any of the following formats

            - YYYY-MM-DD
            - MM-DD-YYYY
            - MM-DD-YY
            - MM/DD/YYYY
            - MM/DD/YY
            - YYYY/MM/DD

    Returns:
        bool: ``True`` if successful, otherwise ``False``

    CLI Example:

    .. code-block:: bash

        salt '*' system.set_system_date '03-28-13'
    """
    fmts = ["%Y-%m-%d", "%m-%d-%Y", "%m-%d-%y", "%m/%d/%Y", "%m/%d/%y", "%Y/%m/%d"]
    # Get date/time object from newdate
    dt_obj = _try_parse_datetime(newdate, fmts)
    if dt_obj is None:
        return False

    # Set time using set_system_date_time()
    return set_system_date_time(years=dt_obj.year, months=dt_obj.month, days=dt_obj.day)


def start_time_service():
    """
    Start the Windows time service

    Returns:
        bool: ``True`` if successful, otherwise ``False``

    CLI Example:

    .. code-block:: bash

        salt '*' system.start_time_service
    """
    return __salt__["service.start"]("w32time")


def stop_time_service():
    """
    Stop the Windows time service

    Returns:
        bool: ``True`` if successful, otherwise ``False``

    CLI Example:

    .. code-block:: bash

        salt '*' system.stop_time_service
    """
    return __salt__["service.stop"]("w32time")


def get_pending_component_servicing():
    """
    Determine whether there are pending Component Based Servicing tasks that
    require a reboot.

    .. versionadded:: 2016.11.0

    Returns:
        bool: ``True`` if there are pending Component Based Servicing tasks,
        otherwise ``False``

    CLI Example:

    .. code-block:: bash

        salt '*' system.get_pending_component_servicing
    """
    return salt.utils.win_system.get_pending_component_servicing()


def get_pending_domain_join():
    """
    Determine whether there is a pending domain join action that requires a
    reboot.

    .. versionadded:: 2016.11.0

    Returns:
        bool: ``True`` if there is a pending domain join action, otherwise
        ``False``

    CLI Example:

    .. code-block:: bash

        salt '*' system.get_pending_domain_join
    """
    return salt.utils.win_system.get_pending_domain_join()


def get_pending_file_rename():
    """
    Determine whether there are pending file rename operations that require a
    reboot.

    .. versionadded:: 2016.11.0

    Returns:
        bool: ``True`` if there are pending file rename operations, otherwise
        ``False``

    CLI Example:

    .. code-block:: bash

        salt '*' system.get_pending_file_rename
    """
    return salt.utils.win_system.get_pending_file_rename()


def get_pending_servermanager():
    """
    Determine whether there are pending Server Manager tasks that require a
    reboot.

    .. versionadded:: 2016.11.0

    Returns:
        bool: ``True`` if there are pending Server Manager tasks, otherwise
        ``False``

    CLI Example:

    .. code-block:: bash

        salt '*' system.get_pending_servermanager
    """
    return salt.utils.win_system.get_pending_servermanager()


def get_pending_update():
    """
    Determine whether there are pending updates that require a reboot.

    .. versionadded:: 2016.11.0

    Returns:
        bool: ``True`` if there are pending updates, otherwise ``False``

    CLI Example:

    .. code-block:: bash

        salt '*' system.get_pending_update
    """
    return salt.utils.win_system.get_pending_update()


def set_reboot_required_witnessed():
    r"""
    This function is used to remember that an event indicating that a reboot is
    required was witnessed. This function relies on the salt-minion's ability to
    create the following volatile registry key in the *HKLM* hive:

       *SYSTEM\\CurrentControlSet\\Services\\salt-minion\\Volatile-Data*

    Because this registry key is volatile, it will not persist beyond the
    current boot session. Also, in the scope of this key, the name *'Reboot
    required'* will be assigned the value of *1*.

    For the time being, this function is being used whenever an install
    completes with exit code 3010 and can be extended where appropriate in the
    future.

    .. versionadded:: 2016.11.0

    Returns:
        bool: ``True`` if successful, otherwise ``False``

    CLI Example:

    .. code-block:: bash

        salt '*' system.set_reboot_required_witnessed
    """
    return salt.utils.win_system.set_reboot_required_witnessed()


def get_reboot_required_witnessed():
    """
    Determine if at any time during the current boot session the salt minion
    witnessed an event indicating that a reboot is required.

    This function will return ``True`` if an install completed with exit
    code 3010 during the current boot session and can be extended where
    appropriate in the future.

    .. versionadded:: 2016.11.0

    Returns:
        bool: ``True`` if the ``Requires reboot`` registry flag is set to ``1``,
        otherwise ``False``

    CLI Example:

    .. code-block:: bash

        salt '*' system.get_reboot_required_witnessed

    """
    return salt.utils.win_system.get_reboot_required_witnessed()


def get_pending_reboot():
    """
    Determine whether there is a reboot pending.

    .. versionadded:: 2016.11.0

    Returns:
        bool: ``True`` if the system is pending reboot, otherwise ``False``

    CLI Example:

    .. code-block:: bash

        salt '*' system.get_pending_reboot
    """
    return salt.utils.win_system.get_pending_reboot()


def get_pending_reboot_details():
    """
    Determine which check is signalling that the system is pending a reboot.
    Useful in determining why your system is signalling that it needs a reboot.

    .. versionadded:: 3001

    Returns:
        dict: A dictionary of the results of each system that would indicate a
        pending reboot

    CLI Example:

    .. code-block:: bash

        salt '*' system.get_pending_reboot_details
    """
    return salt.utils.win_system.get_pending_reboot_details()


def get_pending_windows_update():
    """
    Check the Windows Update system for a pending reboot state.

    This leverages the Windows Update System to determine if the system is
    pending a reboot.

    .. versionadded:: 3001

    Returns:
        bool: ``True`` if the Windows Update system reports a pending update,
        otherwise ``False``

    CLI Example:

    .. code-block:: bash

        salt '*' system.get_pending_windows_update
    """
    return salt.utils.win_system.get_pending_windows_update()