"""Decompile .rpyc files without sources via unrpyc (best effort)."""

import subprocess
import sys
from pathlib import Path

from app.config import get_settings


def decompile_missing(game_dir: Path, warn) -> int:
    """Decompile every .rpyc that has no matching .rpy. Returns how many were produced."""
    pending = [p for p in game_dir.rglob("*.rpyc") if not p.with_suffix(".rpy").exists()]
    if not pending:
        return 0
    script = get_settings().unrpyc_path
    if not script.exists():
        warn("unrpyc не установлен — скомпилированные скрипты (.rpyc) пропущены")
        return 0
    produced = 0
    # several files per call keeps process start-up overhead low
    for i in range(0, len(pending), 50):
        batch = pending[i:i + 50]
        proc = subprocess.run([sys.executable, str(script), "--try-harder", *map(str, batch)],
                              capture_output=True, text=True, timeout=1800)
        for p in batch:
            if p.with_suffix(".rpy").exists():
                produced += 1
            else:
                warn(f"Не удалось декомпилировать {p.name}")
        if proc.returncode != 0 and not any(p.with_suffix(".rpy").exists() for p in batch):
            warn(f"unrpyc: {proc.stderr.strip()[-300:]}")
    return produced