# -*- coding: utf-8 -*-
"""
@author: jürgen.pannosch, tanja.zolotareva
"""

import sys
import os
import logging


class Log:
    def __init__(self, name: str = None,
                 log_file: str = None,
                 log_level: str = "INFO",
                 print_to_stdout: bool = True):
        """Sets the log level and the path where the log file is stored

        :param log_file: Path to the log file.
        :param log_level: Log level."""

        if name is None:
            name = ''

        self._logger = logging.getLogger(name)

        if (self._logger.hasHandlers()):
            self._logger.handlers.clear()

        if log_file is None:
            log_file = os.path.join(".", "all.log")

        assert(isinstance(log_file, str)),\
            "Parameter 'log_path' must be of string type"

        formatter = logging.Formatter(
                '\n %(name)s %(asctime)s %(levelname)s %(message)s')

        os.makedirs(os.path.dirname(log_file), exist_ok=True)

        file_handler = logging.FileHandler(log_file)
        file_handler.setFormatter(formatter)
        self._logger.addHandler(file_handler)

        if print_to_stdout:
            stream_handler = logging.StreamHandler(sys.stdout)
            stream_handler.setFormatter(formatter)
            self._logger.addHandler(stream_handler)

        self._logger.setLevel(log_level)

    def info(self, message: str):
        self._logger.info(message)

    def warning(self, message: str):
        self._logger.warning(message)

    def error(self, message: str):
        self._logger.error(message)