import shutil
from pathlib import Path
from config import DATA_DIR, BASE_DIR

def get_disk_usage() -> float | str:
    try:
        stat = shutil.disk_usage(DATA_DIR)
        return round(stat.free / (1024**3), 2)
    except:
        return "?"

def get_entwine_path() -> str | None:
    import subprocess

    try:
        result = subprocess.run(["which", "entwine"],
            capture_output=True, text=True, check=False)
        if result.returncode == 0:
            path = result.stdout.strip()
            if path and Path(path).exists():
                return path
    except Exception:
        pass

    common_paths = [
        "/usr/local/bin/entwine",
        "/usr/bin/entwine",
        str(BASE_DIR / "entwine"),
        str(BASE_DIR / "bin" / "entwine"),
    ]
    for path in common_paths:
        if Path(path).exists():
            return path
    return None