"""
Logging setup for Fellowship.
Call setup_logging() once at startup. All modules use standard logging.getLogger(__name__).
Logs are written to logs/{YYYY-MM-DD}.log and to stdout in debug mode.
"""

import logging
import logging.handlers
import os
from datetime import date


def setup_logging() -> None:
    os.makedirs("logs", exist_ok=True)

    log_file = f"logs/{date.today().isoformat()}.log"
    formatter = logging.Formatter(
        fmt="%(asctime)s [%(levelname)s] %(name)s — %(message)s",
        datefmt="%Y-%m-%dT%H:%M:%S",
    )

    file_handler = logging.handlers.TimedRotatingFileHandler(
        log_file, when="midnight", backupCount=30, encoding="utf-8"
    )
    file_handler.setFormatter(formatter)
    file_handler.setLevel(logging.DEBUG)

    console_handler = logging.StreamHandler()
    console_handler.setFormatter(formatter)
    console_handler.setLevel(logging.DEBUG)

    root = logging.getLogger()
    root.setLevel(logging.DEBUG)
    root.addHandler(file_handler)
    root.addHandler(console_handler)