from . import Utility
from . import Color


#
# An object representing a single border
#
class Border(object):
    STYLE_MAPPING = {
        "dashDot": (".-", "-.", "dash dot"),
        "dashDotDot": ("..-", "-..", "dash dot dot"),
        "dashed": ("--"),
        "dotted": ("..", ":"),
        "double": ("="),
        "hair": ("hairline", "."),
        "medium": (),
        "mediumDashDot": ("medium dash dot", "medium -.", "medium .-"),
        "mediumDashDotDot": ("medium dash dot dot", "medium -..", "medium ..-"),
        "mediumDashed": ("medium dashed", "medium --"),
        "slantDashDot": ("/-.", "slant dash dot"),
        "thick": (),
        "thin": ("_"),
    }

    __slots__ = ("_color", "_style", "id")

    def __init__(self, color=None, style="thin"):
        self._color = color
        self._style = Border.get_style_name(style)

    @property
    def color(self):
        return Utility.lazy_get(self, "_color", Color.Color(0, 0, 0))

    @color.setter
    def color(self, value):
        Utility.lazy_set(self, "_color", None, value)

    @property
    def style(self):
        return self._style

    @style.setter
    def style(self, value):
        self._style = Border.get_style_name(value)

    @staticmethod
    def get_style_name(style):
        for key, values in Border.STYLE_MAPPING.items():
            if style == key or style in values:
                return key
        # TODO: warn the user?
        return "thin"

    @property
    def is_default(self):
        return self._color is None and self._style == "thin"

    def __eq__(self, other):
        if other is None:
            return self.is_default
        elif Utility.YOLO:
            return self._color == other._color
        else:
            return self._color == other._color and self._style == other._style

    def __hash__(self):
        return hash(self._style)