import logging
import os


class LoggingFormatter(logging.Formatter):
    black = "\x1b[30m"
    red = "\x1b[31m"
    green = "\x1b[32m"
    yellow = "\x1b[33m"
    blue = "\x1b[34m"
    gray = "\x1b[38m"
    reset = "\x1b[0m"
    bold = "\x1b[1m"

    COLORS = {
        logging.DEBUG: gray + bold,
        logging.INFO: blue + bold,
        logging.WARNING: yellow + bold,
        logging.ERROR: red,
        logging.CRITICAL: red + bold,
    }

    def format(self, record):
        log_color = self.COLORS[record.levelno]
        format = "(black){asctime}(reset) (levelcolor){levelname:<8}(reset) (green){name}(reset) {message}"
        format = format.replace("(black)", self.black + self.bold)
        format = format.replace("(reset)", self.reset)
        format = format.replace("(levelcolor)", log_color)
        format = format.replace("(green)", self.green + self.bold)
        formatter = logging.Formatter(format, "%Y-%m-%d %H:%M:%S", style="{")
        return formatter.format(record)


def setup_logger():
    logger = logging.getLogger("discord_bot")
    logger.setLevel(logging.INFO)

    console_handler = logging.StreamHandler()
    console_handler.setFormatter(LoggingFormatter())
    
    log_file_path = os.getenv("LOG_FILE", "logs/discord.log")
    log_dir = os.path.dirname(log_file_path)
    if log_dir:
        os.makedirs(log_dir, exist_ok=True)
    file_handler = logging.FileHandler(filename=log_file_path, encoding="utf-8", mode="w")
    file_handler_formatter = logging.Formatter(
        "[{asctime}] [{levelname:<8}] {name}: {message}", "%Y-%m-%d %H:%M:%S", style="{"
    )
    file_handler.setFormatter(file_handler_formatter)

    logger.addHandler(console_handler)
    logger.addHandler(file_handler)
    
    return logger