import json
import re


class Config:
    DEFAULT_FONT_FAMILY = "Ubuntu Mono"
    DEFAULT_FONT_SIZE = 16
    ITALIC_FONT_FAMILY = "Ubuntu Mono"
    ITALIC_FONT_SIZE = 14
    BACKGROUND_COLOR = [255, 255, 255]
    TEXT_COLOR = [0, 0, 0]
    LINK_COLOR = [0, 0, 0]
    BIT_I_COLOR = [0, 0, 0]
    BORDER_COLOR = [0, 0, 0]
    BIT_WIDTH = 30
    BIT_HEIGHT = 30
    DESCRIPTION_MARGIN = 10
    DASH_LENGTH = 6
    DASH_SPACE = 4
    ARROW_SIZE = 10
    MARGINS = [20, 20, 20, 20]
    ARROW_MARGIN = 4
    VALUES_GAP = 5
    ARROW_LABEL_DISTANCE = 5
    FORCE_DESCS_ON_SIDE = False
    WIDTH = 1200
    HEIGHT = 800
    
    def __init__(self, path: str = "config.json") -> None:
        self.load(path)
    
    def load(self, path: str) -> None:
        with open(path, "r") as f:
            config = json.load(f)
            
            for k, v in config.items():
                k = Config.formatKey(k)
                if hasattr(Config, k):
                    setattr(Config, k, v)

    def formatKey(key: str) -> str:
        return re.sub(r"([a-z])([A-Z])", r"\1_\2", key).upper()