# 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 test.bootstrap
import ifcopenshell.api


class TestRemoveContext(test.bootstrap.IFC4):
    def test_removing_a_context(self):
        context = self.file.createIfcGeometricRepresentationContext()
        ifcopenshell.api.run("context.remove_context", self.file, context=context)
        assert len(self.file.by_type("IfcGeometricRepresentationContext")) == 0

    def test_removing_a_context_with_subcontexts(self):
        context = self.file.createIfcGeometricRepresentationContext()
        subcontext = self.file.createIfcGeometricRepresentationSubcontext()
        subcontext.ParentContext = context
        ifcopenshell.api.run("context.remove_context", self.file, context=context)
        assert len(self.file.by_type("IfcGeometricRepresentationContext")) == 0

    def test_removing_a_subcontext_and_reassigning_references_to_its_parent(self):
        context = self.file.createIfcGeometricRepresentationContext()
        subcontext = self.file.createIfcGeometricRepresentationSubcontext()
        subcontext.ParentContext = context
        representation = self.file.createIfcRepresentation(ContextOfItems=subcontext)
        projected_crs = self.file.createIfcProjectedCRS()
        map_conversion = self.file.createIfcMapConversion(SourceCRS=subcontext, TargetCRS=projected_crs)
        ifcopenshell.api.run("context.remove_context", self.file, context=subcontext)
        assert len(self.file.by_type("IfcGeometricRepresentationSubcontext")) == 0
        assert representation in self.file.get_inverse(context)
        assert len(self.file.by_type("IfcMapConversion")) == 0
        assert len(self.file.by_type("IfcProjectedCRS")) == 0

    def test_removing_a_context_with_references(self):
        context = self.file.createIfcGeometricRepresentationContext()
        representation = self.file.createIfcRepresentation(ContextOfItems=context)
        ifcopenshell.api.run("context.remove_context", self.file, context=context)
        assert len([e for e in self.file]) == 0