"""Shared fixtures for the simple_backup tests"""

import sys
from collections.abc import Callable, Iterator
from datetime import datetime, timedelta

import pytest

from simple_backup import simple_backup as sb


@pytest.fixture(autouse=True)
def no_side_effects(monkeypatch: pytest.MonkeyPatch) -> None:
    """Keep tests out of the systemd journal and the desktop notifications"""

    if hasattr(sb, 'j_handler'):
        sb.logger.removeHandler(sb.j_handler)

    monkeypatch.setattr(sb, '_notify', lambda text: None)


@pytest.fixture
def fake_now(monkeypatch: pytest.MonkeyPatch) -> None:
    """Give each backup a new timestamp, as real runs within the same second would collide"""

    def times() -> Iterator[datetime]:
        t = datetime(2026, 10, 14, 10, 0, 0)

        while True:
            yield t
            t += timedelta(hours=1)

    it = times()

    class FakeDatetime:
        @staticmethod
        def now() -> datetime:
            return next(it)

    monkeypatch.setattr(sb, 'datetime', FakeDatetime)


@pytest.fixture
def run_cli(monkeypatch: pytest.MonkeyPatch) -> Callable[..., int]:
    """Run simple_backup() with the given command line arguments"""

    def run(*argv: str) -> int:
        monkeypatch.setattr(sys, 'argv', ['simple_backup', *argv])

        return sb.simple_backup()

    return run