# -*-coding:Utf-8 -*

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"""Fichier contenant la fonction ouvrir_sac_materiau."""

from primaires.scripting.fonction import Fonction
from primaires.scripting.instruction import ErreurExecution

class ClasseFonction(Fonction):

    """Crée un sac de matériau."""

    @classmethod
    def init_types(cls):
        cls.ajouter_types(cls.ouvrir_sac_materiau, "Objet")

    @staticmethod
    def ouvrir_sac_materiau(sac):
        """Ouvre le sac de matériau en extrayant ce qu'il contient.

        Cette fonction extrait du sac de matériau précisé en argument
        les objets contenus, et retourne la liste des objets.
        Il vous appartiendra de les mettre quelque part (les
        poser dans un conteneur ou sur le sol, par exemple).

        Paramètres à préciser :

          * sac : l'objet de type sac

        Exemples d'utilisation :

          # 'sac' contient un sac de farine
          objets = ouvrir_sac_materiau(sac)
          # Et peut-être ensuite
          pour chaque objet dans objets:
              poser salle objet
          fait

        """
        if not sac.est_de_type("sac de matériau"):
            raise ErreurExecution("{} n'est pas un sac de matériau".format(
                    repr(sac.cle)))

        objets = []
        prototype = getattr(sac, "materiau", None)
        quantite = getattr(sac, "quantite", None)
        if prototype and quantite:
            for i in range(quantite):
                objets.append(importeur.objet.creer_objet(prototype))

        importeur.objet.supprimer_objet(sac.identifiant)
        return objets
