# -*-coding:Utf-8 -*

# Copyright (c) 2010-2017 LE GOFF Vincent
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"""Fichier contenant l'action creer_sortie."""

from primaires.scripting.action import Action
from primaires.scripting.instruction import ErreurExecution

class ClasseAction(Action):

    """Crée une sortie dans une salle.

    Une sortie doit obligatoirement mener vers une autre salle.

    """

    @classmethod
    def init_types(cls):
        cls.ajouter_types(cls.creer_sortie, "Salle", "str", "Salle")

    @staticmethod
    def creer_sortie(salle, direction, destination):
        """Crée une sortie de salle dans la direction vers la destination.

        La direction est à choisir parmi est, ouest, nord, sud, nord-est,
        nord-ouest, sud-est, sud-ouest, haut et bas.

        """
        try:
            direction = salle.sorties.get_nom_long(direction)
        except KeyError:
            raise ErreurExecution("direction {} inconnue".format(direction))
        dir_opposee = salle.sorties.get_nom_oppose(direction)
        if salle.sorties.sortie_existe(direction):
            raise ErreurExecution("sortie {} déjà définie dans {}".format(
                    direction, salle))
        if destination.sorties.sortie_existe(dir_opposee):
            raise ErreurExecution("sortie opposée déjà définie dans {}".format(
                    destination))
        if salle is destination:
            raise ErreurExecution("salle et destination confondues")
        salle.sorties.ajouter_sortie(direction, direction,
                salle_dest=destination, corresp=dir_opposee)
        destination.sorties.ajouter_sortie(dir_opposee, dir_opposee,
                salle_dest=salle, corresp=direction)
