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

import logging
import sys
from typing import Optional

from app.core.config import settings


def setup_logging(level: Optional[str] = None) -> logging.Logger:
    """
    Set up application logging.
    
    Args:
        level: Log level string (DEBUG, INFO, WARNING, ERROR, CRITICAL)
        
    Returns:
        Configured logger instance
    """
    log_level = level or settings.LOG_LEVEL
    
    # Create formatter
    formatter = logging.Formatter(
        fmt="%(asctime)s | %(levelname)-8s | %(name)s | %(message)s",
        datefmt="%Y-%m-%d %H:%M:%S"
    )
    
    # Configure root logger
    root_logger = logging.getLogger()
    root_logger.setLevel(getattr(logging, log_level.upper(), logging.INFO))
    
    # Remove existing handlers
    for handler in root_logger.handlers[:]:
        root_logger.removeHandler(handler)
    
    # Add stdout handler
    stdout_handler = logging.StreamHandler(sys.stdout)
    stdout_handler.setFormatter(formatter)
    root_logger.addHandler(stdout_handler)
    
    # Set third-party loggers to WARNING to reduce noise
    logging.getLogger("uvicorn").setLevel(logging.WARNING)
    logging.getLogger("httpx").setLevel(logging.WARNING)
    logging.getLogger("huggingface_hub").setLevel(logging.WARNING)
    
    return root_logger


def get_logger(name: str) -> logging.Logger:
    """
    Get a named logger instance.
    
    Args:
        name: Logger name (typically __name__)
        
    Returns:
        Logger instance
    """
    return logging.getLogger(name)