from os import getenv
import logging
import sys


def get_logger(name: str):
    """
    Builds the logger. Gets the log level from the environment variable LOG_LEVEL.
    If the log level is not set, it defaults to INFO.
    Creates a stream handler and sets the log level.
    Sets the formatter for the stream handler.
    Adds the stream handler to the logger.
    Returns the logger.
    """
    log_level = getenv('LOG_LEVEL', 'INFO').upper()

    logger = logging.getLogger(name)
    logger.setLevel(log_level)
    stream_handler = logging.StreamHandler(sys.stdout)
    stream_handler.setLevel(log_level)

    stream_handler.setFormatter(
        logging.Formatter(
            '%(asctime)s - %(name)s - %(levelname)s - %(message)s'
        )
    )

    logger.addHandler(stream_handler)

    return logger