import platform
from functools import lru_cache


@lru_cache(maxsize=1)
def _os_release_values():
    values = {}
    try:
        with open("/etc/os-release", encoding="utf-8") as handle:
            for line in handle:
                line = line.strip()
                if not line or "=" not in line:
                    continue
                key, value = line.split("=", 1)
                values[key] = value.strip().strip('"')
    except OSError:
        pass
    return values


@lru_cache(maxsize=1)
def get_os_info():
    """OS display name and icon key, mirroring the original app's os_utils."""
    system = platform.system()
    release = platform.release()
    if system == "Linux":
        name = _os_release_values().get("NAME") or "Linux"
        return {"name": name, "release": release, "icon": "linux"}
    if system == "Darwin":
        return {"name": "macOS", "release": release, "icon": "apple"}
    if system == "Windows":
        return {"name": "Windows", "release": release, "icon": "windows"}
    return {"name": system, "release": release, "icon": "unknown"}