# IfcOpenShell - IFC toolkit and geometry engine
# Copyright (C) 2022 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.api.material
import ifcopenshell.api.root
import ifcopenshell.api.style
import test.bootstrap


class TestUnassignMaterialStyleIFC2X3(test.bootstrap.IFC2X3):
    def test_run(self):
        material = ifcopenshell.api.material.add_material(self.file)
        context = self.file.createIfcGeometricRepresentationContext()
        style = self.file.createIfcSurfaceStyle()
        ifcopenshell.api.style.assign_material_style(self.file, material=material, style=style, context=context)

        # unassign 1 style
        style2 = self.file.createIfcSurfaceStyle()
        item = self.file.by_type("IfcStyledItem")[0]
        item.Styles = item.Styles + (style2,)
        ifcopenshell.api.style.unassign_material_style(self.file, material=material, style=style2, context=context)
        if self.file.schema != "IFC2X3":
            assert item.Styles == (style,)
        else:
            # IfcPresentationStyleAssignment
            assert len(item.Styles) == 1
            assert item.Styles[0].Styles == (style,)

        # unassign last style
        ifcopenshell.api.style.unassign_material_style(self.file, material=material, style=style, context=context)
        assert len(self.file.by_type("IfcMaterialDefinitionRepresentation")) == 0
        assert len(self.file.by_type("IfcStyledRepresentation")) == 0
        assert len(self.file.by_type("IfcStyledItem")) == 0


class TestUnassignMaterialStyleIFC4(test.bootstrap.IFC4, TestUnassignMaterialStyleIFC2X3):
    # IfcMaterialConstituentSet was added in IFC4
    def test_update_shape_aspect_representaitons_items_styles_if_material_is_part_of_matching_material_constituents(
        self,
    ):
        element = ifcopenshell.api.root.create_entity(self.file, ifc_class="IfcWall")
        name = "Concrete"
        product_shape = self.file.createIfcProductDefinitionShape()
        element.Representation = product_shape
        context = self.file.createIfcGeometricRepresentationContext()

        representation = self.file.createIfcShapeRepresentation()
        item = self.file.createIfcExtrudedAreaSolid()
        representation.Items = [item]

        shape_aspect = self.file.createIfcShapeAspect(ShapeRepresentations=(representation,), Name=name)
        shape_aspect.PartOfProductDefinitionShape = product_shape

        style = self.file.createIfcSurfaceStyle()
        material = ifcopenshell.api.material.add_material(self.file)
        material_set = ifcopenshell.api.material.add_material_set(self.file, set_type="IfcMaterialConstituentSet")
        constituent = ifcopenshell.api.material.add_constituent(
            self.file, constituent_set=material_set, material=material
        )
        constituent.Name = name
        ifcopenshell.api.material.assign_material(self.file, products=[element], material=material_set)

        ifcopenshell.api.style.assign_material_style(self.file, material=material, style=style, context=context)
        ifcopenshell.api.style.unassign_material_style(self.file, material=material, style=style, context=context)

        assert len(item.StyledByItem) == 0