import asyncio

import pytest

from app.sync.scheduler import SyncScheduler


class FakeSyncManager:
    def __init__(self, results=None) -> None:
        self.results = results if results is not None else []
        self.calls = 0

    async def sync_all_enabled(self):
        self.calls += 1
        if self.results and isinstance(self.results[0], Exception):
            raise self.results[0]
        return list(self.results)


@pytest.mark.asyncio
async def test_scheduler_calls_sync_all_and_survives_failure() -> None:
    fake = FakeSyncManager(results=[RuntimeError("one user failed")])
    scheduler = SyncScheduler(fake, interval_seconds=0.01)
    await scheduler.start()
    await asyncio.sleep(0.035)
    await scheduler.stop()
    assert fake.calls >= 2
    assert scheduler.last_tick is not None


@pytest.mark.asyncio
async def test_scheduler_stop_cancels_the_loop() -> None:
    fake = FakeSyncManager()
    scheduler = SyncScheduler(fake, interval_seconds=0.01)
    await scheduler.start()
    await asyncio.sleep(0.035)
    await scheduler.stop()

    assert scheduler._task is None
    calls_after_stop = fake.calls
    await asyncio.sleep(0.05)
    assert fake.calls == calls_after_stop