import logging
from pathlib import Path

from backend.config import charger_config

log = logging.getLogger("photobooth.printer")

# Essayer d'importer cups
try:
    import cups
    CUPS_DISPONIBLE = True
except ImportError:
    CUPS_DISPONIBLE = False
    log.warning("pycups non installe, impression indisponible")


def lister_imprimantes() -> list[dict]:
    """Liste les imprimantes disponibles via CUPS."""
    if not CUPS_DISPONIBLE:
        return [{"nom": "[Simulation] Imprimante virtuelle", "statut": "prete"}]

    try:
        conn = cups.Connection()
        imprimantes = conn.getPrinters()
        return [
            {
                "nom": nom,
                "statut": "prete" if info.get("printer-state") == 3 else "occupee",
                "info": info.get("printer-info", ""),
            }
            for nom, info in imprimantes.items()
        ]
    except cups.IPPError as e:
        log.error(f"Erreur CUPS : {e}")
        return []


def imprimer(chemin_photo: Path, imprimante: str | None = None, copies: int | None = None) -> bool:
    """Imprime une photo sur l'imprimante configuree."""
    config = charger_config()
    conf_imp = config.get("impression", {})

    if imprimante is None:
        imprimante = conf_imp.get("imprimante")
    if copies is None:
        copies = conf_imp.get("copies", 1)

    if not chemin_photo.exists():
        log.error(f"Fichier introuvable : {chemin_photo}")
        return False

    if not CUPS_DISPONIBLE:
        log.info(f"[Simulation] Impression de {chemin_photo} x{copies}")
        return True

    try:
        conn = cups.Connection()

        if imprimante is None:
            imprimante = conn.getDefault()
            if imprimante is None:
                imprimantes = conn.getPrinters()
                if imprimantes:
                    imprimante = list(imprimantes.keys())[0]
                else:
                    log.error("Aucune imprimante trouvee")
                    return False

        options = {
            "copies": str(copies),
            "media": conf_imp.get("format", "10x15"),
            "fit-to-page": "true",
        }

        job_id = conn.printFile(imprimante, str(chemin_photo), "Photobooth", options)
        log.info(f"Impression lancee : job #{job_id} sur {imprimante}")
        return True

    except cups.IPPError as e:
        log.error(f"Erreur impression : {e}")
        return False