"""
空运群取消舱位待确认。

航线说出和舱位有关的「释放」后先问一句，确认前不打 TMS。
短协调，不当六态、不当 checkpoint。按群记下工单号，双进程仍能读到。
两小时没人接话就过期，避免过后回一个「是」误取消。
"""

from __future__ import annotations

import json
import logging

from agent.redis_coord.keys import PENDING_CABIN_CANCEL
from agent.redis_coord.runtime import get_redis_runtime

logger = logging.getLogger(__name__)

# 问句只在这一阵有效。过期后「是」不再取消舱位。
_TTL_SECONDS = 2 * 60 * 60


def save_pending_cabin_cancel(chat_id: str, work_order_no: str) -> None:
    """记下本群正在等航线确认取消哪张单。"""
    room = (chat_id or "").strip()
    no = (work_order_no or "").strip()
    if not room or not no:
        return
    payload = {"work_order_no": no}
    try:
        client = get_redis_runtime().client
        client.raw.set(
            client.key(PENDING_CABIN_CANCEL, room),
            json.dumps(payload, ensure_ascii=False),
            ex=_TTL_SECONDS,
        )
        logger.info("cabin.ask saved chat=%s wo=%s", room, no)
    except Exception:
        logger.exception("写取消舱位待确认失败 chat=%s", room)


def load_pending_cabin_cancel(chat_id: str) -> str:
    """本群正在等确认的工单号。没有则空串。"""
    room = (chat_id or "").strip()
    if not room:
        return ""
    try:
        client = get_redis_runtime().client
        raw = client.raw.get(client.key(PENDING_CABIN_CANCEL, room))
        if not raw:
            return ""
        if isinstance(raw, bytes):
            raw = raw.decode("utf-8")
        data = json.loads(raw)
        if not isinstance(data, dict):
            return ""
        return str(data.get("work_order_no") or "").strip()
    except Exception:
        logger.exception("读取消舱位待确认失败 chat=%s", room)
        return ""


def clear_pending_cabin_cancel(chat_id: str) -> None:
    """确认、否认或改口办别的事时清掉。"""
    room = (chat_id or "").strip()
    if not room:
        return
    try:
        client = get_redis_runtime().client
        client.raw.delete(client.key(PENDING_CABIN_CANCEL, room))
    except Exception:
        logger.exception("清取消舱位待确认失败 chat=%s", room)