# IfcOpenShell - IFC toolkit and geometry engine
# Copyright (C) 2021 Dion Moult <dion@thinkmoult.com>
#
# This file is part of IfcOpenShell.
#
# IfcOpenShell is free software: you can redistribute it and/or modify
# it under the terms of the GNU Lesser General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# IfcOpenShell 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 Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public License
# along with IfcOpenShell.  If not, see <http://www.gnu.org/licenses/>.

import ifcopenshell
import ifcopenshell.api


class Usecase:
    def __init__(self, file, **settings):
        self.file = file
        self.settings = {"product": None}
        for key, value in settings.items():
            self.settings[key] = value

    def execute(self):
        contained_in_structure = self.settings["product"].ContainedInStructure
        if not contained_in_structure:
            return

        related_elements = list(contained_in_structure[0].RelatedElements)
        related_elements.remove(self.settings["product"])
        if related_elements:
            contained_in_structure[0].RelatedElements = related_elements
            ifcopenshell.api.run("owner.update_owner_history", self.file, **{"element": contained_in_structure[0]})
        else:
            self.file.remove(contained_in_structure[0])