#!/usr/bin/env python3
"""Проверка файлов, созданных дочерней программой P4CHILD."""

from __future__ import annotations

import pathlib
import sys


def main() -> None:
    if len(sys.argv) != 2:
        raise SystemExit(f"usage: {sys.argv[0]} EXTRACTED_ROOT")
    root = pathlib.Path(sys.argv[1])
    expected = {
        root / "EXECLEFT" / "CREATED.TXT": b"created by P4CHILD\n",
        root / "EXECRGHT" / "PASSIVE.TXT": b"passive refresh by P4CHILD\n",
    }
    failures = []
    for path, content in expected.items():
        if not path.is_file():
            failures.append(f"нет {path.relative_to(root)}")
        elif path.read_bytes() != content:
            failures.append(f"неверное содержимое {path.relative_to(root)}")
    if failures:
        for failure in failures:
            print(f"FAIL: {failure}")
        raise SystemExit(1)
    print("PASS: child создал active/passive markers с ожидаемым содержимым.")


if __name__ == "__main__":
    main()