from collections.abc import Mapping, MutableMapping

import pytest

from multidict import MultiMapping, MutableMultiMapping
from multidict._compat import USE_EXTENSIONS
from multidict._multidict_py import CIMultiDict as PyCIMultiDict
from multidict._multidict_py import CIMultiDictProxy as PyCIMultiDictProxy
from multidict._multidict_py import MultiDict as PyMultiDict  # noqa: E402
from multidict._multidict_py import MultiDictProxy as PyMultiDictProxy

if USE_EXTENSIONS:
    from multidict._multidict import (  # type: ignore
        CIMultiDict,
        CIMultiDictProxy,
        MultiDict,
        MultiDictProxy,
    )


@pytest.fixture(
    params=([MultiDict, CIMultiDict] if USE_EXTENSIONS else [])
    + [PyMultiDict, PyCIMultiDict],
    ids=(["MultiDict", "CIMultiDict"] if USE_EXTENSIONS else [])
    + ["PyMultiDict", "PyCIMultiDict"],
)
def cls(request):
    return request.param


@pytest.fixture(
    params=(
        [(MultiDictProxy, MultiDict), (CIMultiDictProxy, CIMultiDict)]
        if USE_EXTENSIONS
        else []
    )
    + [(PyMultiDictProxy, PyMultiDict), (PyCIMultiDictProxy, PyCIMultiDict)],
    ids=(["MultiDictProxy", "CIMultiDictProxy"] if USE_EXTENSIONS else [])
    + ["PyMultiDictProxy", "PyCIMultiDictProxy"],
)
def proxy_classes(request):
    return request.param


def test_abc_inheritance():
    assert issubclass(MultiMapping, Mapping)
    assert not issubclass(MultiMapping, MutableMapping)
    assert issubclass(MutableMultiMapping, Mapping)
    assert issubclass(MutableMultiMapping, MutableMapping)


class A(MultiMapping):
    def __getitem__(self, key):
        pass

    def __iter__(self):
        pass

    def __len__(self):
        pass

    def getall(self, key, default=None):
        super().getall(key, default)

    def getone(self, key, default=None):
        super().getone(key, default)


def test_abc_getall():
    with pytest.raises(KeyError):
        A().getall("key")


def test_abc_getone():
    with pytest.raises(KeyError):
        A().getone("key")


class B(A, MutableMultiMapping):
    def __setitem__(self, key, value):
        pass

    def __delitem__(self, key):
        pass

    def add(self, key, value):
        super().add(key, value)

    def extend(self, *args, **kwargs):
        super().extend(*args, **kwargs)

    def popall(self, key, default=None):
        super().popall(key, default)

    def popone(self, key, default=None):
        super().popone(key, default)


def test_abc_add():
    with pytest.raises(NotImplementedError):
        B().add("key", "val")


def test_abc_extend():
    with pytest.raises(NotImplementedError):
        B().extend()


def test_abc_popone():
    with pytest.raises(KeyError):
        B().popone("key")


def test_abc_popall():
    with pytest.raises(KeyError):
        B().popall("key")


def test_multidict_inheritance(cls):
    assert issubclass(cls, MultiMapping)
    assert issubclass(cls, MutableMultiMapping)


def test_proxy_inheritance(proxy_classes):
    proxy, _ = proxy_classes
    assert issubclass(proxy, MultiMapping)
    assert not issubclass(proxy, MutableMultiMapping)


def test_generic_type_in_runtime():
    MultiMapping[str]
    MutableMultiMapping[str]