"""Structured logging configuration."""

import logging
import sys
from typing import Any

import structlog


def setup_logging(
    service_name: str,
    log_level: str = "INFO",
    log_format: str = "json",
) -> structlog.BoundLogger:
    """
    Configure structured logging for a service.

    Args:
        service_name: Name of the service for log context
        log_level: Logging level (DEBUG, INFO, WARNING, ERROR)
        log_format: Output format ("json" or "console")

    Returns:
        Configured structlog logger
    """

    # Shared processors
    shared_processors: list[Any] = [
        structlog.contextvars.merge_contextvars,
        structlog.processors.add_log_level,
        structlog.processors.TimeStamper(fmt="iso"),
        structlog.processors.StackInfoRenderer(),
    ]

    if log_format == "json":
        # JSON format for production
        processors = shared_processors + [
            structlog.processors.format_exc_info,
            structlog.processors.JSONRenderer(),
        ]
    else:
        # Console format for development
        processors = shared_processors + [
            structlog.dev.ConsoleRenderer(colors=True),
        ]

    structlog.configure(
        processors=processors,
        wrapper_class=structlog.make_filtering_bound_logger(
            getattr(logging, log_level.upper(), logging.INFO)
        ),
        context_class=dict,
        logger_factory=structlog.PrintLoggerFactory(),
        cache_logger_on_first_use=True,
    )

    # Also configure standard library logging
    logging.basicConfig(
        format="%(message)s",
        stream=sys.stdout,
        level=getattr(logging, log_level.upper(), logging.INFO),
    )

    # Get logger with service context
    logger = structlog.get_logger(service=service_name)

    return logger


def get_logger(name: str | None = None) -> structlog.BoundLogger:
    """Get a logger instance, optionally with a specific name."""
    if name:
        return structlog.get_logger(component=name)
    return structlog.get_logger()