from dataclasses import dataclass
from logging.handlers import RotatingFileHandler
from enum import IntEnum
from typing import Optional
import logging

@dataclass
class Log:
    class Level(IntEnum):
        CRITICAL = 50
        FATAL = CRITICAL
        ERROR = 40
        WARNING = 30
        WARN = WARNING
        INFO = 20
        DEBUG = 10
        NOTSET = 0

    name: str
    level: Level
    file: Optional[str] = None
    format: str = '[%(name)s] %(asctime)s - %(levelname)s - %(message)s'
    date_format: str = '%Y-%m-%d %H:%M:%S'

    def create_logger(self):
        logger = logging.getLogger(self.name)
        logger.setLevel(self.level)
        formatter = logging.Formatter(self.format, self.date_format)
        self._add_handler(logger, logging.StreamHandler(), formatter)
        if self.file:
            self._add_handler(logger, RotatingFileHandler(self.file, maxBytes=1000000, backupCount=3), formatter)
        return logger
    
    def _add_handler(self, logger: logging.Logger, handler: logging.Handler, formatter: logging.Formatter):
        handler.setLevel(self.level)
        handler.setFormatter(formatter)
        logger.addHandler(handler)