# Root password text spoke
#
# Copyright (C) 2012-2014  Red Hat, Inc.
#
# This copyrighted material is made available to anyone wishing to use,
# modify, copy, or redistribute it subject to the terms and conditions of
# the GNU General Public License v.2, or (at your option) any later version.
# This program is distributed in the hope that it will be useful, but WITHOUT
# ANY WARRANTY expressed or implied, including the implied warranties of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General
# Public License for more details.  You should have received a copy of the
# GNU General Public License along with this program; if not, write to the
# Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
# 02110-1301, USA.  Any Red Hat trademarks that are incorporated in the
# source code or documentation are not subject to the GNU General Public
# License and may only be used or replicated with the express permission of
# Red Hat, Inc.
#
from pyanaconda.modules.common.util import is_module_available
from pyanaconda.ui.categories.user_settings import UserSettingsCategory
from pyanaconda.ui.lib.users import can_modify_root_configuration, get_root_configuration_status
from pyanaconda.ui.tui.tuiobject import PasswordDialog
from pyanaconda.ui.tui.spokes import NormalTUISpoke
from pyanaconda.ui.common import FirstbootSpokeMixIn
from pyanaconda.core.i18n import N_, _
from pyanaconda.modules.common.constants.services import USERS
from pyanaconda.core.constants import PASSWORD_POLICY_ROOT

from simpleline.render.widgets import TextWidget


class PasswordSpoke(FirstbootSpokeMixIn, NormalTUISpoke):
    """
       .. inheritance-diagram:: PasswordSpoke
          :parts: 3
    """
    category = UserSettingsCategory

    @staticmethod
    def get_screen_id():
        """Return a unique id of this UI screen."""
        return "root-configuration"

    @classmethod
    def should_run(cls, environment, data):
        """Should the spoke run?"""
        if not is_module_available(USERS):
            return False

        return FirstbootSpokeMixIn.should_run(environment, data)

    def __init__(self, data, storage, payload):
        NormalTUISpoke.__init__(self, data, storage, payload)
        self.initialize_start()
        self.title = N_("Root password")
        self.input_required = False

        self._password = None

        self._users_module = USERS.get_proxy()
        self.initialize_done()

    @property
    def completed(self):
        return self._users_module.IsRootPasswordSet

    @property
    def showable(self):
        return can_modify_root_configuration(self._users_module)

    @property
    def mandatory(self):
        """Only mandatory if no admin user has been requested."""
        return not self._users_module.CheckAdminUserExists()

    @property
    def status(self):
        return get_root_configuration_status(self._users_module)

    def refresh(self, args=None):
        NormalTUISpoke.refresh(self, args)

        msg = _("Please select new root password. You will have to type it twice.")
        self.window.add_with_separator(TextWidget(msg))

    def show_all(self):
        super().show_all()

        password_dialog = PasswordDialog(
            title=_("Password"),
            policy_name=PASSWORD_POLICY_ROOT
        )
        password_dialog.no_separator = True
        password_dialog.username = "root"
        self._password = password_dialog.run()

        if self._password is None:
            self.redraw()
            return
        else:
            self.apply()
            self.close()

    def apply(self):
        self._users_module.SetCryptedRootPassword(self._password)
        if self._password:
            self._users_module.IsRootAccountLocked = False
