import logging
from pathlib import Path

from PIL import Image

from backend.config import DOSSIER_EXPORTS, charger_config

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


def creer_gif(photos: list[Path], duree_frame_ms: int | None = None) -> Path:
    """Cree un GIF anime a partir d'une liste de photos."""
    config = charger_config()
    if duree_frame_ms is None:
        duree_frame_ms = config.get("gif", {}).get("duree_frame_ms", 300)

    images = []
    for p in photos:
        img = Image.open(p).convert("RGB")
        # Redimensionner pour un GIF leger
        img.thumbnail((800, 600), Image.LANCZOS)
        images.append(img)

    if not images:
        log.error("Aucune image pour le GIF")
        return None

    nom = f"gif_{photos[0].stem}.gif"
    chemin = DOSSIER_EXPORTS / nom

    images[0].save(
        chemin,
        save_all=True,
        append_images=images[1:],
        duration=duree_frame_ms,
        loop=0,
        optimize=True,
    )

    log.info(f"GIF cree : {chemin} ({len(images)} frames, {duree_frame_ms}ms)")
    return chemin