"""structlog 结构化日志（ARCH §9.3）。dev 走彩色 console，其余 JSON。"""

from __future__ import annotations

import logging

import structlog
from structlog.typing import Processor
from ww_config import get_settings


def configure_logging() -> None:
    settings = get_settings()
    shared: list[Processor] = [
        structlog.contextvars.merge_contextvars,
        structlog.processors.add_log_level,
        structlog.processors.TimeStamper(fmt="iso"),
    ]
    renderer = (
        structlog.processors.JSONRenderer()
        if settings.log_json
        else structlog.dev.ConsoleRenderer()
    )
    processors: list[Processor] = [*shared, renderer]
    structlog.configure(
        processors=processors,
        wrapper_class=structlog.make_filtering_bound_logger(logging.INFO),
        cache_logger_on_first_use=True,
    )


def get_logger(name: str = "ww") -> structlog.stdlib.BoundLogger:
    logger: structlog.stdlib.BoundLogger = structlog.get_logger(name)
    return logger