#!/usr/bin/env python3
import shutil
import subprocess
import sys
from typing import List

REQUIRED_BINARIES = ["ansible", "ssh", "scp"]


def check_dependencies() -> List[str]:
    """Prüft, welche Binaries fehlen."""
    missing = []
    for binary in REQUIRED_BINARIES:
        if shutil.which(binary) is None:
            missing.append(binary)
    return missing


def install_dependencies(missing: List[str]) -> None:
    """
    Versucht, fehlende Pakete über apt zu installieren.
    Achtung: sehr Debian/Raspberry-spezifisch – bei Bedarf anpassen.
    """
    print("Starte Installation der fehlenden Abhängigkeiten...")
    cmds = []

    if "ansible" in missing:
        cmds.append(["sudo", "apt", "update"])
        cmds.append(["sudo", "apt", "install", "-y", "ansible"])
    if "ssh" in missing or "scp" in missing:
        cmds.append(["sudo", "apt", "install", "-y", "openssh-client"])

    for cmd in cmds:
        print("→", " ".join(cmd))
        try:
            subprocess.run(cmd, check=False)
        except Exception as exc:
            print(f"Fehler beim Ausführen von {' '.join(cmd)}: {exc}")

    print("Abhängigkeiten-Installation abgeschlossen (ggf. Fehlerausgabe oben prüfen).")