import Board

class Field():

    """ Class of single field on game board
    :version: 0.1
    :author: Martin Putzlocher


    """

    """ ATTRIBUTES

    board  (private)

    occupied  (private)

    number  (private)

    color  (private)

    """

    def __init__(self, board:Board.Board=None, number:int=0, color:str="black", house:bool=False):
        if board is None:
            raise Exception("No Board Exception")
        self.board = board
        self._n = number
        self._c = color
        self._h = house
        self._id = ""
        self.set_id(color, number, house)

    def get_id(self):
        """ Get ID of field instance
        """
        return self._id

    def set_id(self, color:str, number:int, house:bool):
        """ Set ID of field instance

        :param color:str: 
        :param number:int: 
        :param house:bool: 

        """
        if house:
            assert 0 <= number <= 3
            self._id = "H" + color[:3] + str(number)
        else:
            assert 0 <= number <= 10
            self._id = "S" + color[:3] + str(number)
        return self._id

    def get_next_field(self, color_of_stone = "black"):
        """Give back next field on board, dependent on the color of a stone on the current
         field.

        :param color_of_stone: Default value = "black")
        :returns: Field :
        @author : Martin Putzlocher

        """
        return self.board.get_next_field_by_color(self, color_of_stone)