from __future__ import annotations

import contextlib
import logging
import sys

import structlog

from findata_core.config import get_settings
from findata_core.redact import RedactingFilter


def configure_logging(level: str = "INFO") -> None:
    settings = get_settings()
    logging.basicConfig(level=level, stream=sys.stdout, format="%(message)s")
    # Never let httpx/httpcore print request URLs (they contain the vendor user id).
    for noisy in ("httpx", "httpcore", "urllib3"):
        logging.getLogger(noisy).setLevel(logging.WARNING)
    structlog.configure(
        processors=[
            structlog.contextvars.merge_contextvars,
            structlog.processors.add_log_level,
            structlog.processors.TimeStamper(fmt="iso", utc=True),
            RedactingFilter(settings.secret_values()),
            structlog.processors.JSONRenderer() if settings.is_production else structlog.dev.ConsoleRenderer(),
        ],
        wrapper_class=structlog.make_filtering_bound_logger(logging.getLevelName(level)),
        logger_factory=_SafePrintLoggerFactory(),
        cache_logger_on_first_use=False,
    )


class _SafePrintLogger:
    """stdout logger that survives a closed pipe/pty (EIO/EPIPE) so a hang-up never crashes a running job."""

    def __init__(self):
        self._file = sys.stdout

    def msg(self, message: str) -> None:
        with contextlib.suppress(OSError, ValueError):
            print(message, file=self._file, flush=True)

    log = debug = info = warn = warning = error = critical = exception = fatal = msg


class _SafePrintLoggerFactory:
    def __call__(self, *args):
        return _SafePrintLogger()


def get_logger(name: str):  # type: ignore[no-untyped-def]
    return structlog.get_logger(name)