#!/usr/bin/python3

import sys
import os
import logging

class Logger:
    main_logger = logging.getLogger()
    main_file_name = None
    main_logger_name = None
    INFO = logging.INFO
    getLogger = logging.getLogger

    def init_logger(log_name, level=INFO):
        if not os.path.isdir('./Logs'):
            os.mkdir('Logs')
        Logger.main_file_name = 'Logs/{}'.format(log_name)
        Logger.main_logger_name = log_name
        logger = logging.getLogger(Logger.main_logger_name)
        Logger.main_logger.setLevel(logging.INFO)
        Logger.default_format = logging.Formatter('%(asctime)s - %(name)s - %(levelname)s - %(message)s')
        Logger.set_formatter(logger=logger, log_file_name='main_file_name')

    def set_formatter(logger, formatter=None, log_file_name=None):
        if formatter is None:
            if not getattr(logger, 'handlers', False):
                formatter = Logger.default_format
            else:
                formatter = logger.handlers[0]
                for hdlr in logger.handlers[:]:  # remove all old handlers
                    logger.removeHandler(hdlr)
        file_name = log_file_name + ".log"
        setattr(Logger, 'main_file_name', str(file_name))
        handler = logging.FileHandler(getattr(Logger, 'main_file_name'))
        handler.setFormatter(formatter)

        if logger is not None:
            logger.addHandler(handler)

        setattr(Logger, 'main_logger', logger)


class TestClass:
    logger_details = {}

    def logger_refresh(self):
        Logger.set_formatter(
            logger=logging.getLogger(getattr(Logger, 'main_logger_name')),
            log_file_name='Logs/{}.{}'.format(
                'test',
                self.logger_details.get('source')
            )
        )

    def main(self):
        Logger.init_logger(log_name='test_logger')
        Logger.main_logger.info('Adding a line into main logger')

        for source in range(1000):
            self.logger_details.update(source=source)
            self.logger_refresh()
            Logger.main_logger.info('Adding a line into {}'.format(source))

        for source in range(1000):
            self.logger_details.update(source=source)
            self.logger_refresh()
            Logger.main_logger.error('Adding an error line into {}'.format(source))

testobj = TestClass()
testobj.main()