import logging
import sys

# Custom Formatter
class SageFormatter(logging.Formatter):
    """Custom formatter to prefix logs with [MODULE] [LEVEL]."""
    def format(self, record):
        log_fmt = "[%(name)s] [%(levelname)s] %(message)s"
        formatter = logging.Formatter(log_fmt)
        return formatter.format(record)

class SageStreamHandler(logging.StreamHandler):
    def emit(self, record):
        super().emit(record)
        self.flush()

def get_sage_logger(name: str):
    """Factory for Sage loggers."""
    logger = logging.getLogger(name)
    if not logger.handlers:
        logger.setLevel(logging.DEBUG)
        handler = SageStreamHandler(sys.stdout)
        handler.setFormatter(SageFormatter())
        logger.addHandler(handler)
        logger.propagate = False
    return logger

# Global instance for basic app logging
log = get_sage_logger("app")