from core.builtin_concepts import BuiltinConcepts
from core.concept import Concept
from core.sheerka.ExecutionContext import ExecutionContext
from core.sheerka.services.SheerkaMemory import SheerkaMemory, MemoryObject

from tests.TestUsingFileBasedSheerka import TestUsingFileBasedSheerka
from tests.TestUsingMemoryBasedSheerka import TestUsingMemoryBasedSheerka


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

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

        assert service.short_term_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[SheerkaMemory.NAME]

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

        context_id = ExecutionContext.ids[context.event.get_digest()]
        assert service.short_term_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[SheerkaMemory.NAME]
        foo = Concept("foo")
        sheerka.add_to_short_term_memory(None, "a", foo)

        with context.push(BuiltinConcepts.TESTING, None) as sub_context:
            assert service.short_term_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

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

        assert sheerka.get_from_memory(context, "a") is None

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

        assert service.objects.copy() == {"a": MemoryObject(context.event.get_digest(), foo)}
        assert id(sheerka.get_from_memory(context, "a").obj) == id(foo)

    def test_i_can_use_memory_to_get_the_list_of_all_objects(self):
        sheerka, context = self.init_concepts()
        foo = Concept("foo")
        bar = Concept("bar")

        sheerka.add_to_memory(context, "foo", 'value that will not appear')
        sheerka.add_to_memory(context, "foo", foo)
        sheerka.add_to_memory(context, "bar", bar)

        assert sheerka.memory(context) == {"foo": foo, "bar": bar}

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

        foo = Concept("foo")
        sheerka.add_to_memory(context, "foo", foo)

        assert sheerka.memory(context, "foo") == foo

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

        foo = Concept("foo")
        sheerka.add_to_memory(context, "foo", foo)

        assert sheerka.memory(context, Concept("foo")) == foo

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

        res = sheerka.memory(context, "foo")

        assert sheerka.isinstance(res, BuiltinConcepts.NOT_FOUND)
        assert res.body == {"#name": "foo"}

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

        foo = Concept("foo")
        bar = Concept("bar")

        sheerka.add_to_memory(context, "item", foo)
        sheerka.add_to_memory(context, "item", bar)

        assert sheerka.memory(context, "item") == bar


class TestSheerkaMemoryUsingFileBase(TestUsingFileBasedSheerka):
    def test_i_can_record_memory_objects(self):
        sheerka, context = self.init_concepts()

        sheerka.add_to_memory(context, "item", Concept("foo"))
        sheerka.cache_manager.commit(context)

        sheerka = self.get_sheerka()
        context = self.get_context(sheerka)
        assert sheerka.get_from_memory(context, "item").obj == Concept("foo")