"""
Logging utilities for B2B Shopping AI Assistant
"""
import logging
import sys
from typing import Optional

import structlog
from structlog.types import Processor


def setup_logging(level: str = "INFO") -> None:
    """Setup structured logging configuration"""
    
    # Configure standard library logging
    logging.basicConfig(
        format="%(message)s",
        stream=sys.stdout,
        level=getattr(logging, level.upper()),
    )
    
    # Define processors for structlog
    shared_processors: list[Processor] = [
        structlog.contextvars.merge_contextvars,
        structlog.processors.add_log_level,
        structlog.processors.TimeStamper(fmt="iso"),
        structlog.stdlib.PositionalArgumentsFormatter(),
        structlog.processors.StackInfoRenderer(),
        structlog.processors.UnicodeDecoder(),
    ]
    
    # Configure structlog
    structlog.configure(
        processors=shared_processors + [
            structlog.stdlib.ProcessorFormatter.wrap_for_formatter,
        ],
        logger_factory=structlog.stdlib.LoggerFactory(),
        wrapper_class=structlog.stdlib.BoundLogger,
        cache_logger_on_first_use=True,
    )


def get_logger(name: Optional[str] = None) -> structlog.stdlib.BoundLogger:
    """Get a structured logger instance
    
    Args:
        name: Logger name, defaults to module name
        
    Returns:
        Configured structlog logger
    """
    return structlog.get_logger(name)


# Create default logger
logger = get_logger("agent")