"""Logging setup for IoT Bridge."""

import structlog

from config import LoggingConfig


LOG_LEVELS: dict[str, int] = {
    "critical": 50,
    "error": 40,
    "warning": 30,
    "info": 20,
    "debug": 10,
    "notset": 0,
}


def setup_logging(config: LoggingConfig):
    """Configure structured logging with structlog."""

    # Set log level
    log_level = LOG_LEVELS.get(config.level.lower(), LOG_LEVELS["info"])

    renderer_processor = (
        structlog.processors.JSONRenderer()
        if config.format == "json"
        else structlog.dev.ConsoleRenderer()
    )

    structlog.configure(
        processors=[
            structlog.contextvars.merge_contextvars,
            structlog.processors.add_log_level,
            structlog.processors.TimeStamper(fmt="iso"),
            structlog.processors.StackInfoRenderer(),
            structlog.processors.format_exc_info,
            renderer_processor,
        ],
        context_class=dict,
        wrapper_class=structlog.make_filtering_bound_logger(log_level),
        logger_factory=structlog.PrintLoggerFactory(),
        cache_logger_on_first_use=True,
    )

    return structlog.get_logger()