"""
Logger setup utility
"""
import logging
import sys
from flask import Flask

def setup_logger(app: Flask):
    """
    Setup application logger
    
    Args:
        app: Flask application instance
    """
    config = app.config
    
    # Get log level
    log_level = getattr(logging, config.get('log_level', 'INFO').upper(), logging.INFO)
    
    # Configure logger
    logger = logging.getLogger('videoSummary')
    logger.setLevel(log_level)
    
    # Create formatter
    if config.get('log_format') == 'json':
        formatter = logging.Formatter(
            '{"time": "%(asctime)s", "level": "%(levelname)s", "message": "%(message)s", "module": "%(name)s"}'
        )
    else:
        formatter = logging.Formatter(
            '%(asctime)s - %(name)s - %(levelname)s - %(message)s'
        )
    
    # Create handler
    if config.get('log_output') == 'stdout' or not config.get('log_output'):
        handler = logging.StreamHandler(sys.stdout)
    else:
        handler = logging.FileHandler(config.get('log_output'))
    
    handler.setFormatter(formatter)
    logger.addHandler(handler)
    
    app.logger = logger