"""HostAdapter ABC：只定义接口形状，不可实例化，方法签名齐全。"""
import pytest

from quercus_core.host.adapter import HostAdapter
from quercus_core.types import Action, ActionBatch, Limits, Rational


def test_abc_cannot_instantiate():
    with pytest.raises(TypeError):
        HostAdapter()  # type: ignore[abstract]


def test_abstract_methods_declared():
    assert {"capabilities", "limits", "get_frame", "get_thumbnails", "execute", "undo_last"} <= set(
        HostAdapter.__abstractmethods__
    )


def test_missing_abstract_method_raises():
    class Partial(HostAdapter):
        def capabilities(self):
            return set()

    with pytest.raises(TypeError):
        Partial()  # type: ignore[abstract]


def test_concrete_subclass_works():
    class Impl(HostAdapter):
        def capabilities(self):
            return set()

        def limits(self):
            return Limits()

        def open_project(self, path): ...

        def save_project(self, path=None): ...

        def get_project_overview(self): ...

        def probe_media(self, path): ...

        def import_footage(self, paths): ...

        def get_timeline_structure(self, seq): ...

        def get_frame(self, target, time, max_size): ...

        def get_thumbnails(self, target, range, count): ...

        def get_audio_levels(self, seq, range, resolution): ...

        def play(self, speed=1.0): ...

        def pause(self): ...

        def seek(self, time): ...

        def get_state(self): ...

        def export(self, seq, output, preset): ...

        def execute(self, batch): ...

        def undo_last(self): ...

    impl = Impl()
    assert impl.capabilities() == set()
    assert impl.limits().max_frame_rate == 8.0
    # execute 接受 ActionBatch 语义
    impl.execute(ActionBatch(label="t", actions=[Action(tool="play", params={})]))