#
# Gramps - a GTK+/GNOME based genealogy program
#
# Copyright (C) 2007 Johan Gronqvist (johan.gronqvist@gmail.com)
# copyright (C) 2007 Brian G. Matherly
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty 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, see <https://www.gnu.org/licenses/>.
#

# -------------------------------------------------------------------------
#
# Standard Python modules
#
# -------------------------------------------------------------------------
from ....const import GRAMPS_LOCALE as glocale

_ = glocale.translation.gettext

# -------------------------------------------------------------------------
#
# Gramps modules
#
# -------------------------------------------------------------------------
from .. import Rule


# -------------------------------------------------------------------------
#
# Typing modules
#
# -------------------------------------------------------------------------
from ....lib import Person
from ....db import Database


# -------------------------------------------------------------------------
# "People with less than 2 parents"
# -------------------------------------------------------------------------
class MissingParent(Rule):
    """People with less than two parents"""

    name = _("People missing parents")
    description = _(
        "Matches people that are children"
        " in a family with less than two parents"
        " or are not children in any family."
    )
    category = _("Family filters")

    def apply_to_one(self, db: Database, person: Person) -> bool:
        families = person.parent_family_list
        if families == []:
            return True
        for family_handle in families:
            family = db.get_family_from_handle(family_handle)
            if family:
                father_handle = family.father_handle
                mother_handle = family.mother_handle
                if not father_handle:
                    return True
                if not mother_handle:
                    return True
        return False
