import logging

logger = logging.getLogger(__name__)

def verifier_stock_suffisant(article_ref, quantite, cursor, depot=None):
    """Version thread-safe avec lock SQL"""
    try:

            cursor.execute("SET TRANSACTION ISOLATION LEVEL SERIALIZABLE")
            cursor.execute("BEGIN TRANSACTION")

            try:
                cursor.execute(
                    """
                    SELECT SUM(AS_QteSto) 
                    FROM F_ARTSTOCK WITH (UPDLOCK, ROWLOCK)
                    WHERE AR_Ref = ?
                    """,
                    (article_ref.upper(),),
                )

                row = cursor.fetchone()
                stock_dispo = float(row[0]) if row and row[0] else 0.0

                suffisant = stock_dispo >= quantite

                cursor.execute("COMMIT")

                return {
                    "suffisant": suffisant,
                    "stock_disponible": stock_dispo,
                    "quantite_demandee": quantite,
                }

            except:
                cursor.execute("ROLLBACK")
                raise

    except Exception as e:
        logger.error(f"Erreur vérification stock: {e}")
        raise