import pytest

from core.concept import Concept


@pytest.mark.parametrize("name, variables, expected", [
    ("my name is a", ["a"], "my name is __var__0"),
    ("a b c d", ["b", "c"], "a __var__0 __var__1 d"),
    ("a 'b c' d", ["b", "c"], "a b c d"),
    ("a | b", ["a", "b"], "__var__0 | __var__1"),
    ("a b a c", ["a", "b"], "__var__0 __var__1 __var__0 c"),
    ("a b a c", ["b", "a"], "__var__1 __var__0 __var__1 c"),
])
def test_i_can_get_concept_key(name, variables, expected):
    concept = Concept(name)
    for v in variables:
        concept.set_prop(v, None)

    concept.init_key()
    assert concept.metadata.key == expected


def test_key_does_not_use_variable_when_definition_is_set():
    concept = Concept("plus").set_prop('plus')

    concept.init_key()
    assert concept.metadata.key == "plus"


def test_i_can_serialize():
    """
    Test concept.to_dict()
    :return:
    """
    concept = Concept(
        name="concept_name",
        is_builtin=True,
        is_unique=True,
        key="concept_key",
        body="definition of the body",
        where="definition of the where",
        pre="definition of the pre",
        post="definition of the post",
        definition="bnf definition",
        definition_type="def type",
        desc="this this the desc",
        id="123456"
    ).set_prop("a", 10).set_prop("b", None)

    to_dict = concept.to_dict()
    assert to_dict == {
        'body': 'definition of the body',
        'definition': 'bnf definition',
        'definition_type': 'def type',
        'desc': 'this this the desc',
        'id': '123456',
        'is_builtin': True,
        'is_unique': True,
        'key': 'concept_key',
        'name': 'concept_name',
        'post': 'definition of the post',
        'pre': 'definition of the pre',
        'props': [('a', 10), ('b', None)],
        'where': 'definition of the where'
    }


def test_i_can_deserialize():
    """
    Test concept.from_dict()
    :return:
    """

    from_dict = {
        'body': 'definition of the body',
        'definition': 'bnf definition',
        'definition_type': 'def type',
        'desc': 'this this the desc',
        'id': '123456',
        'is_builtin': True,
        'is_unique': True,
        'key': 'concept_key',
        'name': 'concept_name',
        'post': 'definition of the post',
        'pre': 'definition of the pre',
        'props': [('a', 10), ('b', None)],
        'where': 'definition of the where'
    }

    concept = Concept().from_dict(from_dict)

    assert concept == Concept(
        name="concept_name",
        is_builtin=True,
        is_unique=True,
        key="concept_key",
        body="definition of the body",
        where="definition of the where",
        pre="definition of the pre",
        post="definition of the post",
        definition="bnf definition",
        definition_type="def type",
        desc="this this the desc",
        id="123456"
    ).set_prop("a", 10).set_prop("b", None)


def test_i_can_compare_concept_with_circular_reference():
    foo = Concept("foo")
    foo.metadata.body = foo

    assert foo == foo


def test_i_can_compare_concept_with_sophisticated_circular_reference():
    foo = Concept("foo")
    bar = Concept("foo", body=foo)
    baz = Concept("foo", body=bar)
    foo.metadata.body = baz

    assert foo != bar


def test_i_can_compare_concept_with_sophisticated_circular_reference_in_other_metadata():
    foo = Concept("foo")
    bar = Concept("foo", pre=foo)
    baz = Concept("foo", pre=bar)
    foo.metadata.pre = baz

    assert foo != bar