"""
工单工具：查询我的工单、提交处理结果
"""

import json
from typing import List, Optional
from langchain_core.tools import tool
from langchain_core.runnables import RunnableConfig

from app.utils.logger import logger
from .alarm_query import ALARM_TYPE_NAMES, _get_camera_display_name
from .alarm_action import _get_order_id_for_alarm


@tool
def list_my_orders(config: RunnableConfig, status: str = "HANDLING") -> str:
    """查询我的待处理工单列表

    Args:
        status: 工单状态筛选 HANDLING=处理中 ALL=全部
    """
    from app.services.alarm_event_service import get_alarm_event_service
    svc = get_alarm_event_service()

    user_id = config.get("configurable", {}).get("user_id", "")

    alarms, total = svc.get_alarms(
        alarm_status="CONFIRMED",
        page=1,
        page_size=20,
    )

    my_alarms = [a for a in alarms if a.handler == user_id]

    if not my_alarms:
        return json.dumps({"total": 0, "items": [], "message": "当前没有待处理的工单"}, ensure_ascii=False)

    items = []
    for a in my_alarms:
        cam_name = _get_camera_display_name(a.device_id)
        event_time = ""
        if a.event_time:
            try:
                event_time = a.event_time.strftime("%m-%d %H:%M")
            except Exception:
                event_time = str(a.event_time)[:16]
        items.append({
            "alarm_id": a.alarm_id,
            "type": ALARM_TYPE_NAMES.get(a.alarm_type, a.alarm_type),
            "camera": cam_name,
            "time": event_time,
        })

    return json.dumps({"total": len(my_alarms), "items": items}, ensure_ascii=False)


@tool
async def submit_order_result(
    alarm_id: str,
    result_text: str,
    config: RunnableConfig,
    image_urls: Optional[List[str]] = None,
) -> str:
    """提交工单处理结果（文字描述+处理后照片URL）

    Args:
        alarm_id: 关联的告警ID
        result_text: 处理结果描述
        image_urls: 处理后照片URL列表（COS永久URL）
    """
    from app.services.alarm_event_service import get_alarm_event_service
    from app.services.wechat_service import get_wechat_service

    user_id = config.get("configurable", {}).get("user_id", "")
    svc = get_alarm_event_service()
    wechat = get_wechat_service()

    if image_urls is None:
        image_urls = []

    # 检查告警是否存在
    detail = svc.get_alarm(alarm_id)
    if not detail:
        return json.dumps({"error": f"未找到告警: {alarm_id}"}, ensure_ascii=False)

    # 合并 session 中暂存的图片
    from app.services.session_manager import get_session_manager
    session = get_session_manager().get(user_id)
    if session.pending_images:
        image_urls = session.pending_images + image_urls
        session.pending_images = []

    # 获取关联工单ID
    order_id = _get_order_id_for_alarm(alarm_id)

    from app.services.work_order_client import get_work_order_client
    wo_client = get_work_order_client()

    remark = f"企微Agent结单: {result_text}"
    if image_urls:
        remark += f" (附{len(image_urls)}张图片)"

    if order_id and wo_client.enabled:
        if not await wo_client.submit_order(
            order_id,
            result=f"{result_text} by {user_id}",
            result_img_urls=image_urls or None,
        ):
            remark += "(IoT降级)"

    svc.handle_alarm(alarm_id=alarm_id, alarm_status="CLOSED",
                     handle_status="DONE", handler=user_id, remark=remark)

    # 持久化处理结果图片到 alarm_event_ext
    if image_urls:
        try:
            from app.models import get_session as get_db_session, AlarmEventExt
            db = get_db_session()
            try:
                ext = AlarmEventExt(
                    alarm_id=alarm_id,
                    ext_type="HANDLER_RESULT",
                    ext_data={"result_text": result_text, "image_urls": image_urls, "handler": user_id},
                )
                db.add(ext)
                db.commit()
            except Exception as e:
                db.rollback()
                logger.error(f"持久化处理结果图片失败: {e}")
            finally:
                db.close()
        except Exception as e:
            logger.error(f"保存处理结果失败: {e}")

    # 更新卡片到终态
    response_code = wechat.get_response_code(alarm_id)
    if response_code:
        await wechat.update_alarm_card_terminal(
            response_code=response_code, user_ids=[user_id],
            alarm_id=alarm_id, action="complete", operator_name=user_id,
        )

    result = {
        "success": True,
        "message": f"工单已提交: {alarm_id}",
        "result": result_text,
        "images_count": len(image_urls),
    }
    return json.dumps(result, ensure_ascii=False)