from typing import Any
import click


class Logger:
    verbose: bool

    def __init__(self, verbose: bool = False):
        self.verbose = verbose

    @staticmethod
    def _log(prefix: str = 'LOG', message: Any = '', nl: bool = True, **kwargs) -> None:
        text = '{}: {}'.format(prefix, message) if message else ''
        click.secho(text, nl=nl, **kwargs)

    @staticmethod
    def _join(*args, delimiter: str = ' ') -> str:
        return delimiter.join([str(arg) for arg in args])

    def debug(self, *args, **kwargs) -> None:
        """
        Write a message to stdout only if the '--verbose' option is set (in gray).
        """
        if self.verbose:
            kwargs.setdefault('fg', 'bright_black')
            self._log('DEBUG', self._join(*args), **kwargs)

    def info(self, *args, **kwargs) -> None:
        """
        Write a message to stdout (in white).
        """
        kwargs.setdefault('fg', 'white')
        self._log('INFO', self._join(*args), **kwargs)

    def warn(self, *args, **kwargs) -> None:
        """
        Write a warning message to stderr (in yellow).
        """
        kwargs.setdefault('fg', 'yellow')
        self._log('WARNING', self._join(*args), **kwargs)

    def error(self, *args, **kwargs) -> None:
        """
        Write an error message to stderr (in red).
        """
        kwargs.setdefault('fg', 'red')
        self._log('ERROR', self._join(*args), err=True, **kwargs)

    def success(self, *args, **kwargs) -> None:
        """
        Write a success message stdout (in green).
        """
        kwargs.setdefault('fg', 'green')
        self._log('SUCCESS', self._join(*args), **kwargs)


logger = Logger()