"""
Logging configuration for the application.
"""

import logging
import sys
from typing import Optional

from app.core.config import settings


def setup_logging(
    logger_name: str = "daily_journal_prompt",
    log_level: Optional[str] = None,
) -> logging.Logger:
    """
    Set up logging configuration.

    Args:
        logger_name: Name of the logger
        log_level: Logging level (DEBUG, INFO, WARNING, ERROR, CRITICAL)

    Returns:
        Configured logger instance
    """
    if log_level is None:
        log_level = "DEBUG" if settings.DEBUG else "INFO"

    # Create logger
    logger = logging.getLogger(logger_name)
    logger.setLevel(getattr(logging, log_level.upper()))

    # Remove existing handlers to avoid duplicates
    logger.handlers.clear()

    # Create console handler
    console_handler = logging.StreamHandler(sys.stdout)
    console_handler.setLevel(getattr(logging, log_level.upper()))

    # Create formatter
    formatter = logging.Formatter(
        "%(asctime)s - %(name)s - %(levelname)s - %(message)s",
        datefmt="%Y-%m-%d %H:%M:%S"
    )
    console_handler.setFormatter(formatter)

    # Add handler to logger
    logger.addHandler(console_handler)

    # Prevent propagation to root logger
    logger.propagate = False

    return logger