import stat
from pathlib import Path

import pytest

from k1link.launchd_logs import launchd_log_path, prepare_launchd_log


def test_journal_is_private_and_keeps_existing_evidence(tmp_path, monkeypatch):
    monkeypatch.setattr(Path, "home", lambda: tmp_path)
    path = launchd_log_path("core.log")
    prepare_launchd_log(path)
    path.write_text("existing evidence\n")
    prepare_launchd_log(path)
    assert path.read_text() == "existing evidence\n"
    assert stat.S_IMODE(path.stat().st_mode) == 0o600
    assert path == tmp_path / "Library/Logs/NODE.DC/MissionCore/core.log"


def test_journal_rejects_symlink_and_unexpected_destination(tmp_path, monkeypatch):
    monkeypatch.setattr(Path, "home", lambda: tmp_path)
    target = tmp_path / "evidence"
    target.write_text("immutable")
    path = launchd_log_path("core.log")
    path.parent.mkdir(parents=True)
    path.symlink_to(target)
    with pytest.raises(OSError):
        prepare_launchd_log(path)
    with pytest.raises(ValueError):
        prepare_launchd_log(tmp_path / "Downloads/core.log")
    assert target.read_text() == "immutable"