from __future__ import annotations

import asyncio
from types import SimpleNamespace

import app.main as main_module


class _DummyCoreService:
    def available_meeting_intervals(
        self,
        start: str,
        end: str,
        calendar_ids: list[str] | None,
    ) -> SimpleNamespace:
        checked = calendar_ids or ["primary"]
        return SimpleNamespace(
            start=start,
            end=end,
            timezone="Europe/Paris",
            meeting_intervals=[
                SimpleNamespace(
                    start="2026-03-10T08:30:00+01:00",
                    end="2026-03-10T09:30:00+01:00",
                )
            ],
            checked_calendars=checked,
        )


def test_rest_meeting_intervals_adapter_returns_expected_payload(monkeypatch) -> None:
    monkeypatch.setattr(main_module, "core_service", _DummyCoreService())

    response = asyncio.run(
        main_module.meeting_intervals(
            main_module.MeetingIntervalsRequest(
                start="2026-03-10T08:00:00+01:00",
                end="2026-03-10T10:00:00+01:00",
                calendar_ids=["primary"],
            )
        )
    )

    payload = response.model_dump()
    assert payload["timezone"] == "Europe/Paris"
    assert payload["checked_calendars"] == ["primary"]
    assert payload["meeting_intervals"] == [
        {
            "start": "2026-03-10T08:30:00+01:00",
            "end": "2026-03-10T09:30:00+01:00",
        }
    ]