"""Idle HLS sessions are reaped on a timer, not only when the next session is requested.

plex/stream.py promises "a periodic reaper kills idle ones", but `reap_idle` ran only inside
POST /session: after the last playback, an abandoned session (its ffmpeg still working through the
film, its directory a whole segmented copy of it) lived until somebody pressed play again.
"""

import asyncio

import app.main as app_main
from app.main import app


class _Configured:
    def __enter__(self):
        return None

    def __exit__(self, *exc):
        return False


def test_idle_sessions_are_reaped_while_nobody_starts_a_new_one(monkeypatch):
    async def _no_sweep():
        return None

    reaped: list[int] = []
    monkeypatch.setattr(app_main, "SessionLocal", _Configured)
    monkeypatch.setattr(app_main.state, "is_configured", lambda db: True)
    monkeypatch.setattr(app_main, "_sweep_hls_orphans", _no_sweep)
    monkeypatch.setattr(app_main, "start_scheduler", lambda: None)
    monkeypatch.setattr(app_main, "shutdown_scheduler", lambda: None)
    monkeypatch.setattr(app_main.plex_subtitles, "shutdown", lambda: None)
    monkeypatch.setattr(app_main, "_HLS_REAP_EVERY_S", 0.01)
    monkeypatch.setattr(app_main.plex_stream, "reap_idle", lambda: reaped.append(1) or 0)

    async def _cycle():
        async with app_main.lifespan(app):
            await asyncio.sleep(0.2)

    asyncio.run(_cycle())
    assert len(reaped) >= 2, "no periodic reap ran while the app was up"