"""Regression test against real production log samples (Chapter 12): both
files were provided during development after a real cPanel deployment and
confirmed to parse cleanly with zero failures against the default
Combined-format parser. Locked in here so a future change can't silently
break compatibility with this real-world data.
"""
from __future__ import annotations

from pathlib import Path

from app.services.log_parser.apache import combined_parser

FIXTURES_DIR = Path(__file__).parent / "fixtures"


def _count_parse_failures(path: Path) -> tuple[int, int]:
    parser = combined_parser()
    total = 0
    failed = 0
    with path.open(encoding="utf-8", errors="replace") as f:
        for line in f:
            total += 1
            if parser.parse_line(line) is None:
                failed += 1
    return total, failed


def test_ssl_log_fixture_parses_with_zero_failures():
    total, failed = _count_parse_failures(FIXTURES_DIR / "hemmatitasks.ir-ssl_log")
    assert total == 222
    assert failed == 0


def test_plain_log_fixture_parses_with_zero_failures():
    total, failed = _count_parse_failures(FIXTURES_DIR / "hemmatitasks.ir")
    assert total == 66
    assert failed == 0