from __future__ import annotations

import sys

# noinspection PyProtectedMember
from ctypes import Structure, _SimpleCData  # noqa: PLC2701
from ctypes.wintypes import DWORD, WCHAR, WORD
from types import ModuleType
from typing import TYPE_CHECKING, ClassVar, Generic, TypeVar
from unittest.mock import ANY, Mock, call

import pytest

from streamlink_cli.console.windows import COORD, WindowsConsole


if TYPE_CHECKING:
    from io import TextIOWrapper


_TCTypesType = TypeVar("_TCTypesType")


class _CTypesComparable(Generic[_TCTypesType]):
    """Allow comparing ctypes data types with built-in types for equality"""

    _type: ClassVar[type]

    def __init__(self, data: _TCTypesType):
        self.data: tuple = self._get_data(data)

    def _get_data(self, data: _TCTypesType) -> tuple:  # pragma: no cover
        raise NotImplementedError

    def __eq__(self, other):
        if isinstance(other, self._type):
            return self.__eq__(type(self)(other))
        if not isinstance(other, type(self)):  # pragma: no cover
            return False

        return self.data == other.data

    def __hash__(self):  # pragma: no cover
        return super().__hash__()


class EqSimpleCData(_CTypesComparable[_SimpleCData]):
    _type: ClassVar = _SimpleCData

    def _get_data(self, data: _SimpleCData) -> tuple:
        # noinspection PyProtectedMember
        return data._type_, data.value  # type: ignore[attr-defined]


class EqStructure(_CTypesComparable[Structure]):
    _type: ClassVar = Structure

    def _get_data(self, data: Structure) -> tuple:
        # noinspection PyProtectedMember
        return tuple(getattr(data, item) for (item, *_) in data._fields_)


@pytest.fixture(autouse=True)
def _mock_byref(monkeypatch: pytest.MonkeyPatch):
    monkeypatch.setattr("streamlink_cli.console.windows.byref", Mock(side_effect=lambda obj, *_, **__: obj))


@pytest.fixture(autouse=True)
def mock_windll(monkeypatch: pytest.MonkeyPatch):
    mock_windll = Mock()
    monkeypatch.setattr("ctypes.windll", mock_windll, raising=False)

    return mock_windll


def test_no_windll(monkeypatch: pytest.MonkeyPatch):
    monkeypatch.setitem(sys.modules, "ctypes", ModuleType("ctypes"))
    assert WindowsConsole() is None


@pytest.mark.parametrize(
    ("method", "function"),
    [
        ("get_std_handle", "GetStdHandle"),
        ("get_console_mode", "GetConsoleMode"),
        ("get_console_screen_buffer_info", "GetConsoleScreenBufferInfo"),
        ("set_console_cursor_position", "SetConsoleCursorPosition"),
        ("fill_console_output_attribute", "FillConsoleOutputAttribute"),
        ("fill_console_output_character_w", "FillConsoleOutputCharacterW"),
    ],
)
def test_functions(mock_windll: Mock, method: str, function: str):
    windows_console = WindowsConsole()
    assert isinstance(windows_console, WindowsConsole)
    assert getattr(windows_console, method).method is getattr(mock_windll.kernel32, function)


def test_call_success_error(monkeypatch: pytest.MonkeyPatch, mock_windll: Mock):
    windows_console = WindowsConsole()
    monkeypatch.setattr(windows_console.set_console_cursor_position, "method", Mock(return_value=False))
    mock_windll.kernel32.GetLastError.return_value = 87

    with pytest.raises(OSError) as exc_info:  # noqa: PT011
        windows_console.set_console_cursor_position(123, 456)
    assert str(exc_info.value) == "Error while calling kernel32.SetConsoleCursorPosition (last_error=0x57)"


@pytest.mark.parametrize(
    ("stream", "expected"),
    [
        pytest.param(None, -11, id="None"),
        pytest.param(sys.stdout, -11, id="stdout"),
        pytest.param(sys.stderr, -12, id="stderr"),
    ],
)
def test_std_handle(mock_windll: Mock, stream: TextIOWrapper | None, expected: int):
    windows_console = WindowsConsole(stream)
    assert mock_windll.kernel32.GetStdHandle.call_args_list == [call(expected)]
    assert windows_console.handle is mock_windll.kernel32.GetStdHandle.return_value


@pytest.mark.parametrize(
    ("value", "success", "expected"),
    [
        pytest.param(0, False, False, id="error"),
        pytest.param(3, True, False, id="no-virtual-terminal-processing"),
        pytest.param(7, True, True, id="virtual-terminal-processing"),
    ],
)
def test_supports_virtual_terminal_processing(mock_windll: Mock, value: int, success: bool, expected: bool):
    def fake_get_console_mode(_handle, mode):
        mode.value = value

        return success

    mock_windll.kernel32.GetConsoleMode.side_effect = fake_get_console_mode
    mock_windll.kernel32.GetLastError.return_value = 87

    windows_console = WindowsConsole()
    assert windows_console.supports_virtual_terminal_processing() == expected
    assert mock_windll.kernel32.GetConsoleMode.call_args_list == [call(mock_windll.kernel32.GetStdHandle.return_value, ANY)]


def test_clear_line(mock_windll: Mock):
    def fake_get_console_screen_buffer_info(_handle, console_screen_buffer_info):
        console_screen_buffer_info.dwSize.X = 144
        console_screen_buffer_info.dwSize.Y = 42
        console_screen_buffer_info.dwCursorPosition.X = 20
        console_screen_buffer_info.dwCursorPosition.Y = 15
        console_screen_buffer_info.wAttributes = 0

        return True

    mock_windll.kernel32.GetConsoleScreenBufferInfo.side_effect = fake_get_console_screen_buffer_info

    windows_console = WindowsConsole()
    windows_console.clear_line()
    assert mock_windll.kernel32.GetConsoleScreenBufferInfo.call_args_list == [
        call(mock_windll.kernel32.GetStdHandle.return_value, ANY),
    ]
    assert mock_windll.kernel32.FillConsoleOutputCharacterW.call_args_list == [
        call(
            mock_windll.kernel32.GetStdHandle.return_value,
            EqSimpleCData(WCHAR(" ")),
            EqSimpleCData(DWORD(144)),
            EqStructure(COORD(0, 15)),
            EqSimpleCData(DWORD(0)),
        ),
    ]
    assert mock_windll.kernel32.FillConsoleOutputAttribute.call_args_list == [
        call(
            mock_windll.kernel32.GetStdHandle.return_value,
            EqSimpleCData(WORD(0)),
            EqSimpleCData(DWORD(144)),
            EqStructure(COORD(0, 15)),
            EqSimpleCData(DWORD(0)),
        ),
    ]
    assert mock_windll.kernel32.SetConsoleCursorPosition.call_args_list == [
        call(
            mock_windll.kernel32.GetStdHandle.return_value,
            EqStructure(COORD(0, 15)),
        ),
    ]