from core.builtin_concepts import BuiltinConcepts
from core.concept import Concept
from core.sheerka.ExecutionContext import ExecutionContext
from core.sheerka.services.SheerkaShortTermMemory import SheerkaShortTermMemory

from tests.TestUsingMemoryBasedSheerka import TestUsingMemoryBasedSheerka


class TestSheerkaShortTermMemory(TestUsingMemoryBasedSheerka):
    def test_i_can_add_to_global_short_term_memory(self):
        sheerka = self.get_sheerka()
        service = sheerka.services[SheerkaShortTermMemory.NAME]

        foo = Concept("foo")
        sheerka.add_to_short_term_memory(None, "a", foo)

        assert service.objects.copy() == {":a": foo}
        assert id(sheerka.get_from_short_term_memory(None, "a")) == id(foo)

    def test_i_can_add_context_short_term_memory(self):
        sheerka, context = self.init_concepts()
        service = sheerka.services[SheerkaShortTermMemory.NAME]

        foo = Concept("foo")
        sheerka.add_to_short_term_memory(context, "a", foo)

        context_id = ExecutionContext.ids[context.event.get_digest()]
        assert service.objects.copy() == {f"{context_id}:a": foo}
        assert id(sheerka.get_from_short_term_memory(context, "a")) == id(foo)
        assert sheerka.get_from_short_term_memory(None, "a") is None

    def test_i_can_get_obj_from_parents(self):
        sheerka, context = self.init_concepts()
        service = sheerka.services[SheerkaShortTermMemory.NAME]
        foo = Concept("foo")
        sheerka.add_to_short_term_memory(None, "a", foo)

        with context.push(BuiltinConcepts.TESTING, None) as sub_context:
            assert service.objects.copy() == {":a": foo}
            assert id(sheerka.get_from_short_term_memory(sub_context, "a")) == id(foo)
            assert id(sheerka.get_from_short_term_memory(context, "a")) == id(foo)
            assert id(sheerka.get_from_short_term_memory(None, "a")) == id(foo)

    def test_entry_are_removed_on_context_exit(self):
        sheerka, context = self.init_concepts()

        with context.push(BuiltinConcepts.TESTING, None) as sub_context:
            foo = Concept("foo")
            sheerka.add_to_short_term_memory(sub_context, "a", foo)
            assert id(sheerka.get_from_short_term_memory(sub_context, "a")) == id(foo)

        assert sheerka.get_from_short_term_memory(sub_context, "a") is None