# Licensed under the GPL: https://www.gnu.org/licenses/old-licenses/gpl-2.0.html
# For details: https://github.com/PyCQA/pylint/blob/main/LICENSE
# Copyright (c) https://github.com/PyCQA/pylint/blob/main/CONTRIBUTORS.txt

"""For the visitors.diadefs module."""

# pylint: disable=redefined-outer-name

from __future__ import annotations

import os
import warnings
from collections.abc import Generator
from pathlib import Path

import astroid
import pytest
from astroid import nodes

from pylint.pyreverse import inspector
from pylint.pyreverse.inspector import Project
from pylint.testutils.utils import _test_cwd
from pylint.typing import GetProjectCallable

HERE = Path(__file__)
TESTS = HERE.parent.parent


@pytest.fixture
def project(get_project: GetProjectCallable) -> Generator[Project, None, None]:
    with _test_cwd(TESTS):
        project = get_project("data", "data")
        linker = inspector.Linker(project)
        with warnings.catch_warnings():
            warnings.filterwarnings("ignore", category=DeprecationWarning)
            linker.visit(project)
        yield project


def test_class_implements(project: Project) -> None:
    klass = project.get_module("data.clientmodule_test")["Ancestor"]
    assert hasattr(klass, "implements")
    assert len(klass.implements) == 1
    assert isinstance(klass.implements[0], nodes.ClassDef)
    assert klass.implements[0].name == "Interface"


def test_class_implements_specialization(project: Project) -> None:
    klass = project.get_module("data.clientmodule_test")["Specialization"]
    assert hasattr(klass, "implements")
    assert len(klass.implements) == 0


def test_locals_assignment_resolution(project: Project) -> None:
    klass = project.get_module("data.clientmodule_test")["Specialization"]
    assert hasattr(klass, "locals_type")
    type_dict = klass.locals_type
    assert len(type_dict) == 2
    keys = sorted(type_dict.keys())
    assert keys == ["TYPE", "top"]
    assert len(type_dict["TYPE"]) == 1
    assert type_dict["TYPE"][0].value == "final class"
    assert len(type_dict["top"]) == 1
    assert type_dict["top"][0].value == "class"


def test_instance_attrs_resolution(project: Project) -> None:
    klass = project.get_module("data.clientmodule_test")["Specialization"]
    assert hasattr(klass, "instance_attrs_type")
    type_dict = klass.instance_attrs_type
    assert len(type_dict) == 3
    keys = sorted(type_dict.keys())
    assert keys == ["_id", "relation", "relation2"]
    assert isinstance(type_dict["relation"][0], astroid.bases.Instance), type_dict[
        "relation"
    ]
    assert type_dict["relation"][0].name == "DoNothing"
    assert type_dict["_id"][0] is astroid.Uninferable


def test_concat_interfaces() -> None:
    cls = astroid.extract_node(
        '''
        class IMachin: pass

        class Correct2:
            """docstring"""
            __implements__ = (IMachin,)

        class BadArgument:
            """docstring"""
            __implements__ = (IMachin,)

        class InterfaceCanNowBeFound: #@
            """docstring"""
            __implements__ = BadArgument.__implements__ + Correct2.__implements__
    '''
    )
    interfaces = inspector.interfaces(cls)
    assert [i.name for i in interfaces] == ["IMachin"]


def test_interfaces() -> None:
    module = astroid.parse(
        """
    class Interface(object): pass
    class MyIFace(Interface): pass
    class AnotherIFace(Interface): pass
    class Concrete0(object):
        __implements__ = MyIFace
    class Concrete1:
        __implements__ = (MyIFace, AnotherIFace)
    class Concrete2:
        __implements__ = (MyIFace, AnotherIFace)
    class Concrete23(Concrete1): pass
    """
    )

    for klass, interfaces in (
        ("Concrete0", ["MyIFace"]),
        ("Concrete1", ["MyIFace", "AnotherIFace"]),
        ("Concrete2", ["MyIFace", "AnotherIFace"]),
        ("Concrete23", []),
    ):
        klass = module[klass]
        assert [i.name for i in inspector.interfaces(klass)] == interfaces


def test_from_directory(project: Project) -> None:
    expected = os.path.join("tests", "data", "__init__.py")
    assert project.name == "data"
    assert project.path.endswith(expected)


def test_project_node(project: Project) -> None:
    expected = [
        "data",
        "data.clientmodule_test",
        "data.property_pattern",
        "data.suppliermodule_test",
    ]
    assert sorted(project.keys()) == expected


def test_interface_deprecation(project: Project) -> None:
    linker = inspector.Linker(project)
    cls = astroid.extract_node(
        '''
        class IMachin: pass

        class Concrete:  #@
            """docstring"""
            __implements__ = (IMachin,)
    '''
    )
    with pytest.warns(DeprecationWarning):
        linker.visit_classdef(cls)