import logging
from io import BytesIO
from pathlib import Path

from backend.config import DOSSIER_EXPORTS, charger_config

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

try:
    import qrcode
    QRCODE_DISPONIBLE = True
except ImportError:
    QRCODE_DISPONIBLE = False
    log.warning("qrcode non installe")


def generer_qr(contenu: str, nom: str = "qr.png") -> Path | None:
    """Genere un QR code PNG."""
    if not QRCODE_DISPONIBLE:
        log.error("Module qrcode non disponible")
        return None

    qr = qrcode.QRCode(version=1, box_size=10, border=4)
    qr.add_data(contenu)
    qr.make(fit=True)
    img = qr.make_image(fill_color="black", back_color="white")

    chemin = DOSSIER_EXPORTS / nom
    img.save(chemin)
    log.info(f"QR code genere : {chemin}")
    return chemin


def qr_galerie() -> Path | None:
    """Genere le QR code pointant vers la galerie en ligne."""
    config = charger_config()
    url = config.get("qr_code", {}).get("url_galerie", "")
    if not url:
        log.warning("URL galerie non configuree")
        return None
    return generer_qr(url, "qr_galerie.png")