from core.concept import Concept, ConceptParts
from core.sheerka.Sheerka import Sheerka
from core.sheerka.services.SheerkaVariableManager import SheerkaVariableManager

from tests.TestUsingMemoryBasedSheerka import TestUsingMemoryBasedSheerka


class TestSheerkaVariable(TestUsingMemoryBasedSheerka):
    def test_i_can_record_and_load_a_constant(self):
        sheerka = self.get_sheerka(cache_only=False)
        context = self.get_context(sheerka)

        sheerka.record(context, "TestSheerkaVariable", "my_variable", 1)
        res = sheerka.load("TestSheerkaVariable", "my_variable")
        assert res == 1

        # I can persist in db
        sheerka.cache_manager.commit(context)

        assert sheerka.sdp.exists(SheerkaVariableManager.VARIABLES_ENTRY, "TestSheerkaVariable|my_variable")
        loaded = sheerka.sdp.get(SheerkaVariableManager.VARIABLES_ENTRY, "TestSheerkaVariable|my_variable")
        assert loaded.event_id == context.event.get_digest()
        assert loaded.key == "my_variable"
        assert loaded.value == 1
        assert loaded.who == "TestSheerkaVariable"
        assert loaded.parents is None

    def test_i_can_record_and_load_a_concept(self):
        sheerka = self.get_sheerka()
        context = self.get_context(sheerka)

        concept = Concept("foo").set_value("a", "alpha").set_value(ConceptParts.BODY, 3.14)

        sheerka.record(context, "TestSheerkaVariable", "my_variable", concept)
        res = sheerka.load("TestSheerkaVariable", "my_variable")

        assert res == concept
        assert res.body == concept.body
        assert res.a == concept.a

    def test_i_can_delete_an_entry(self):
        sheerka = self.get_sheerka()
        context = self.get_context(sheerka)

        concept = Concept("foo")

        sheerka.record(context, "TestSheerkaVariable", "my_variable", concept)
        assert sheerka.load("TestSheerkaVariable", "my_variable") is not None

        sheerka.delete(context, "TestSheerkaVariable", "my_variable")
        assert sheerka.load("TestSheerkaVariable", "my_variable") is None

    # def test_i_can_get_the_parent_when_modified(self):
    #     sheerka = self.get_sheerka()
    #     context = self.get_context(sheerka)
    #
    #     sheerka.record(context, "TestSheerkaVariable", "my_variable", 1)
    #     sheerka.record(context, "TestSheerkaVariable", "my_variable", 2)
    #     res = sheerka.load("TestSheerkaVariable", "my_variable")
    #     assert res == 2
    #
    #     loaded = sheerka.sdp.get(SheerkaVariableManager.VARIABLES_ENTRY, "TestSheerkaVariable.my_variable")
    #     assert loaded.event_id == context.event.get_digest()
    #     assert loaded.key == "my_variable"
    #     assert loaded.value == 2
    #     assert loaded.who == "TestSheerkaVariable"
    #     assert loaded.parents == ['8c9ada7bf488d84229f6539f76042431638f16d600fe3b7ec7e7161043a40d59']
    #
    #     parent = sheerka.sdp.load_obj(loaded.parents[0])
    #     assert parent.event_id == context.event.get_digest()
    #     assert parent.key == "my_variable"
    #     assert parent.value == 1
    #     assert parent.who == "TestSheerkaVariable"
    #     assert parent.parents is None

    # def test_variable_is_not_persisted_if_the_value_is_the_same(self):
    #     sheerka = self.get_sheerka(singleton=True)
    #     context = self.get_context(sheerka)
    #
    #     sheerka.record(context, "TestSheerkaVariable", "my_variable", 1)
    #     sheerka.record(context, "TestSheerkaVariable", "my_variable", 1)
    #
    #     loaded = sheerka.sdp.get(SheerkaVariableManager.VARIABLES_ENTRY, "TestSheerkaVariable.my_variable")
    #     assert loaded.event_id == context.event.get_digest()
    #     assert loaded.key == "my_variable"
    #     assert loaded.value == 1
    #     assert loaded.who == "TestSheerkaVariable"
    #     assert loaded.parents is None