from collections.abc import Callable
from types import SimpleNamespace

from serena.dashboard import SerenaDashboardAPI
from solidlsp.ls_config import Language


class _DummyMemoryLogHandler:
    def get_log_messages(self, from_idx: int = 0):  # pragma: no cover - simple stub
        return SimpleNamespace(messages=[], max_idx=-1)

    def clear_log_messages(self) -> None:  # pragma: no cover - simple stub
        pass


class _DummyAgent:
    def __init__(self, project: SimpleNamespace | None) -> None:
        self._project = project

    def register_config_changed_callback(self, callback: Callable[[], None]) -> None:
        pass

    def execute_task(self, func, *, logged: bool | None = None, name: str | None = None):
        del logged, name
        return func()

    def get_active_project(self):
        return self._project


def _make_dashboard(project_languages: list[Language] | None) -> SerenaDashboardAPI:
    project = None
    if project_languages is not None:
        project = SimpleNamespace(project_config=SimpleNamespace(languages=project_languages))
    agent = _DummyAgent(project)
    return SerenaDashboardAPI(memory_log_handler=_DummyMemoryLogHandler(), tool_names=[], agent=agent, tool_usage_stats=None)


def test_available_languages_include_experimental_when_no_active_project():
    dashboard = _make_dashboard(project_languages=None)
    response = dashboard._get_available_languages()
    expected = sorted(lang.value for lang in Language.iter_all(include_experimental=True))
    assert response.languages == expected


def test_available_languages_exclude_project_languages():
    dashboard = _make_dashboard(project_languages=[Language.PYTHON, Language.MARKDOWN])
    response = dashboard._get_available_languages()
    available = set(response.languages)
    assert Language.PYTHON.value not in available
    assert Language.MARKDOWN.value not in available
    # ensure experimental languages remain available for selection
    assert Language.ANSIBLE.value in available