# -*-coding:Utf-8 -*

# Copyright (c) 2013 LE GOFF Vincent
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"""Fichier contenant la fonction contenus_dans."""

from fractions import Fraction

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

class ClasseFonction(Fonction):

    """Renvoie les objets contenus dans un conteneur."""

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

    @staticmethod
    def contenus_dans(conteneur):
        """Renvoie la liste des objets contenus dans ce conteneur.

        On doit donc utiliser une boucle pour pardcourir les objets
        retournés par cette fonction. Le conteneur peut être un conteneur
        simple, une machine, un conteneur de nourriture ou de potion.
        Dans ce dernier cas, il ne retourne qu'un seul objet
        qui est la potion contenue.

        NOTE IMPORTANTE : si le conteneur est un conteneur standard
        ou une machine, ne retourne que les objets uniques. C'est-à-dire,
        principalement, que l'argent ne sera pas retourné.

        Vous pouvez utiliser la fonction 'grouper_par_nom' pour
        avoir un groupage par nom d'objets, ce qui a tendance à
        être plus agréable, notamment pour l'affichage.

        """
        if conteneur.est_de_type("conteneur de potion"):
            return [conteneur.potion] if conteneur.potion else []

        if conteneur.est_de_type("conteneur de nourriture"):
            return list(conteneur.nourriture)

        if conteneur.est_de_type("conteneur") or conteneur.est_de_type(
                "machine"):
            return list(conteneur.conteneur._objets)

        raise ErreurExecution("{} n'est pas un conteneur".format(conteneur))
