from core.builtin_concepts import ConceptAlreadyInSet, BuiltinConcepts
from core.concept import Concept

from tests.TestUsingFileBasedSheerka import TestUsingFileBasedSheerka


class TestSheerkaSetsManager(TestUsingFileBasedSheerka):

    def init(self, use_dict, *concepts):
        sheerka = self.get_sheerka(use_dict, True)
        for c in concepts:
            sheerka.set_id_if_needed(c, False)
            sheerka.add_in_cache(c)

        context = self.get_context(sheerka)
        return sheerka, context

    def test_i_can_add_concept_to_set(self):
        foo = Concept("foo")
        all_foos = Concept("all_foos")
        sheerka, context = self.init(False, foo, all_foos)

        res = sheerka.add_concept_to_set(context, foo, all_foos)

        assert res.status
        assert sheerka.isinstance(res.body, BuiltinConcepts.SUCCESS)

        all_entries = self.get_sheerka(False, True).sdp.get("All_" + all_foos.id, None, False)
        assert len(all_entries) == 1
        assert foo.id in all_entries

    def test_i_can_add_several_concepts_to_set(self):
        foo1 = Concept("foo1")
        foo2 = Concept("foo2")
        all_foos = Concept("all_foos")
        sheerka, context = self.init(False, foo1, foo2, all_foos)

        res = sheerka.sets_handler.add_concepts_to_set(context, (foo1, foo2), all_foos)

        assert res.status
        assert sheerka.isinstance(res.body, BuiltinConcepts.SUCCESS)

        all_entries = self.get_sheerka(False, False).sdp.get("All_" + all_foos.id, None, False)
        assert len(all_entries) == 2
        assert foo1.id in all_entries
        assert foo2.id in all_entries

        # I can add another elements
        foo3 = Concept("foo3")
        foo4 = Concept("foo4")
        for c in [foo3, foo4]:
            sheerka.set_id_if_needed(c, False)
            sheerka.add_in_cache(c)

        res = sheerka.sets_handler.add_concepts_to_set(context, (foo3, foo4), all_foos)

        assert res.status
        assert sheerka.isinstance(res.body, BuiltinConcepts.SUCCESS)

        all_entries = self.get_sheerka(False, False).sdp.get("All_" + all_foos.id, None, False)
        assert len(all_entries) == 4
        assert foo1.id in all_entries
        assert foo2.id in all_entries
        assert foo3.id in all_entries
        assert foo4.id in all_entries

    def test_i_cannot_add_the_same_concept_twice_in_a_set(self):
        foo = Concept("foo")
        all_foos = Concept("all_foos")
        sheerka, context = self.init(True, foo, all_foos)

        sheerka.add_concept_to_set(context, foo, all_foos)
        res = sheerka.add_concept_to_set(context, foo, all_foos)

        assert not res.status
        assert res.body == ConceptAlreadyInSet(foo, all_foos)

        all_entries = sheerka.sdp.get("All_" + all_foos.id, None, False)
        assert len(all_entries) == 1
        assert foo.id in all_entries

    def test_i_get_elements_from_a_set(self):
        one = Concept("one")
        two = Concept("two")
        three = Concept("three")
        number = Concept("number")
        sheerka, context = self.init(True, one, two, three, number)

        for c in [one, two, three]:
            sheerka.add_concept_to_set(context, c, number)

        elements = sheerka.get_set_elements(number)

        assert set(elements) == {one, two, three}

    def test_i_cannot_get_elements_if_not_a_set(self):
        one = Concept("one")
        sheerka, context = self.init(True, one)

        error = sheerka.get_set_elements(one)

        assert sheerka.isinstance(error, BuiltinConcepts.NOT_A_SET)
        assert error.body == one

    def test_isa_and_isa_group(self):
        group = Concept("group")
        foo = Concept("foo")
        sheerka, context = self.init(True, group, foo)

        assert not sheerka.isaset(group)
        assert not sheerka.isa(foo, group)

        context = self.get_context(sheerka)
        sheerka.add_concept_to_set(context, foo, group)
        assert sheerka.isaset(group)
        assert sheerka.isa(foo, group)

    def test_i_can_a_multiples_concepts(self):
        pass