# =============================================================================
# 企微IT智能服务台 — 企微 API 封装服务
# =============================================================================
# 说明：封装所有与企微服务器的交互逻辑，包括：
#   1. access_token 管理（Redis 缓存 + 自动刷新）
#   2. 发送消息（文本/图片/文件）
#   3. 获取员工信息（通讯录 API）
#   4. 上传临时素材
#   5. OAuth2 授权换算用户身份
# =============================================================================

import json
import logging
from typing import Any, Dict, List, Optional

import httpx
import redis.asyncio as aioredis

from app.config import settings

logger = logging.getLogger(__name__)


class WecomService:
    """企微 API 调用服务。

    封装所有与企微服务器的 HTTP 交互，提供异步方法。
    access_token 通过 Redis 缓存管理，避免频繁调用获取接口。

    Attributes:
        redis: Redis 异步客户端（用于缓存 access_token）
        client: httpx 异步 HTTP 客户端
    """

    def __init__(self, redis_client: Optional[aioredis.Redis] = None):
        """初始化企微服务。

        Args:
            redis_client: Redis 异步客户端实例（可为 None，本地开发时 Redis 不可用）
        """
        self.redis = redis_client
        # 创建 httpx 异步客户端
        # timeout: 连接超时5秒，读取超时10秒
        self.client = httpx.AsyncClient(
            timeout=httpx.Timeout(connect=5.0, read=10.0, write=10.0, pool=5.0)
        )
        # 内存缓存（Redis 不可用时的降级方案）
        self._token_cache: Optional[str] = None
        # 通讯录同步 token 的内存缓存（与应用 token 区分，避免互相覆盖）
        self._contact_token_cache: Optional[str] = None
        # 会议室 API token 的内存缓存（使用独立 secret，与应用/通讯录 token 区分）
        self._meetingroom_token_cache: Optional[str] = None

    # --------------------------------------------------------------------------
    # access_token 管理
    # --------------------------------------------------------------------------
    async def get_access_token(self) -> str:
        """获取企微 access_token。

        优先从 Redis 缓存获取，如果缓存不存在或即将过期则重新获取。
        access_token 有效期 7200 秒，缓存 TTL 设为 6900 秒（提前 300 秒刷新）。

        对应企微API:
            GET https://qyapi.weixin.qq.com/cgi-bin/gettoken?corpid=ID&corpsecret=SECRET

        Returns:
            str: access_token 字符串

        Raises:
            Exception: 获取 access_token 失败
        """
        # Redis 缓存 key
        cache_key = "wecom:access_token"

        # 1. 尝试从 Redis 缓存获取
        if self.redis:
            try:
                cached_token = await self.redis.get(cache_key)
                if cached_token:
                    logger.debug("从缓存获取 access_token")
                    return cached_token.decode("utf-8")
            except Exception as e:
                logger.warning(f"Redis 读取失败（降级）: {e}")

        # 1b. 尝试从内存缓存获取
        if self._token_cache:
            logger.debug("从内存缓存获取 access_token")
            return self._token_cache

        # 2. 缓存未命中，调用企微 API 获取
        logger.info("缓存未命中，调用企微API获取 access_token")
        url = "https://qyapi.weixin.qq.com/cgi-bin/gettoken"
        params = {
            "corpid": settings.wecom_corp_id,
            "corpsecret": settings.wecom_secret,
        }

        try:
            response = await self.client.get(url, params=params)
            result = response.json()

            # 检查企微API返回码
            if result.get("errcode") != 0:
                error_msg = result.get("errmsg", "未知错误")
                logger.error(f"获取 access_token 失败: errcode={result.get('errcode')}, errmsg={error_msg}")
                raise Exception(f"企微API错误: {error_msg}")

            access_token = result["access_token"]
            expires_in = result.get("expires_in", 7200)

            # 3. 缓存到 Redis，TTL = 有效期 - 300秒（提前刷新）
            buffer_seconds = 300
            cache_ttl = max(expires_in - buffer_seconds, 60)  # 至少缓存 60 秒
            if self.redis:
                try:
                    await self.redis.setex(cache_key, cache_ttl, access_token)
                except Exception as e:
                    logger.warning(f"Redis 写入失败（降级）: {e}")

            # 3b. 同时缓存到内存
            self._token_cache = access_token

            logger.info(f"access_token 获取成功，缓存 TTL={cache_ttl}秒")
            return access_token

        except httpx.HTTPError as e:
            logger.error(f"获取 access_token 网络错误: {e}")
            raise Exception(f"企微API网络错误: {e}") from e

    async def get_contact_access_token(self) -> str:
        """获取企微通讯录同步 access_token。

        使用通讯录同步专用 Secret（wecom_contact_secret）获取 access_token，
        该 Secret 拥有完整的通讯录读取权限（部门列表、成员列表等）。

        当 wecom_contact_secret 未配置时，降级使用普通应用 access_token
        （此时通讯录相关 API 可能因权限不足返回 errcode 60011）。

        对应企微API:
            GET https://qyapi.weixin.qq.com/cgi-bin/gettoken?corpid=ID&corpsecret=CONTACT_SECRET

        Returns:
            str: access_token 字符串

        Raises:
            Exception: 获取 access_token 失败
        """
        # 降级：未配置通讯录同步 Secret，使用普通应用 token
        if not settings.wecom_contact_secret:
            logger.debug("未配置 wecom_contact_secret，降级使用普通 access_token")
            return await self.get_access_token()

        # Redis 缓存 key（与应用 token 区分，避免互相覆盖）
        cache_key = "wecom:contact_access_token"

        # 1. 尝试从 Redis 缓存获取
        if self.redis:
            try:
                cached_token = await self.redis.get(cache_key)
                if cached_token:
                    logger.debug("从缓存获取通讯录 access_token")
                    return cached_token.decode("utf-8") if isinstance(cached_token, bytes) else cached_token
            except Exception as e:
                logger.warning(f"Redis 读取通讯录 token 失败（降级）: {e}")

        # 1b. 尝试从内存缓存获取
        if self._contact_token_cache:
            logger.debug("从内存缓存获取通讯录 access_token")
            return self._contact_token_cache

        # 2. 缓存未命中，调用企微 API 获取
        logger.info("缓存未命中，调用企微API获取通讯录 access_token")
        url = "https://qyapi.weixin.qq.com/cgi-bin/gettoken"
        params = {
            "corpid": settings.wecom_corp_id,
            "corpsecret": settings.wecom_contact_secret,
        }

        try:
            response = await self.client.get(url, params=params)
            result = response.json()

            # 检查企微API返回码
            if result.get("errcode") != 0:
                error_msg = result.get("errmsg", "未知错误")
                logger.error(f"获取通讯录 access_token 失败: errcode={result.get('errcode')}, errmsg={error_msg}")
                raise Exception(f"企微API错误: {error_msg}")

            access_token = result["access_token"]
            expires_in = result.get("expires_in", 7200)

            # 3. 缓存到 Redis，TTL = 有效期 - 300秒（提前刷新）
            buffer_seconds = 300
            cache_ttl = max(expires_in - buffer_seconds, 60)  # 至少缓存 60 秒
            if self.redis:
                try:
                    await self.redis.setex(cache_key, cache_ttl, access_token)
                except Exception as e:
                    logger.warning(f"Redis 写入通讯录 token 失败（降级）: {e}")

            # 3b. 同时缓存到内存
            self._contact_token_cache = access_token

            logger.info(f"通讯录 access_token 获取成功，缓存 TTL={cache_ttl}秒")
            return access_token

        except httpx.HTTPError as e:
            logger.error(f"获取通讯录 access_token 网络错误: {e}")
            raise Exception(f"企微API网络错误: {e}") from e

    # --------------------------------------------------------------------------
    # 会议室 API access_token 管理
    # --------------------------------------------------------------------------
    async def get_meetingroom_access_token(self) -> str:
        """获取企微会议室 API 专用 access_token。

        企微会议室API需要独立的"会议室"secret获取token，
        不同于普通应用secret和通讯录secret。

        当 wecom_meetingroom_secret 未配置时，降级使用普通应用 access_token
        （此时会议室API可能因权限不足返回错误）。

        Redis缓存key: wecom:meetingroom_access_token
        TTL: 有效期 - 300秒（提前刷新），与 get_access_token() 模式一致。

        Returns:
            str: access_token 字符串

        Raises:
            Exception: 获取 access_token 失败
        """
        # 降级：未配置会议室专用 Secret，使用普通应用 token
        if not settings.wecom_meetingroom_secret:
            logger.debug("未配置 wecom_meetingroom_secret，降级使用普通 access_token")
            return await self.get_access_token()

        cache_key = "wecom:meetingroom_access_token"

        # 1. 尝试从 Redis 缓存获取
        if self.redis:
            try:
                cached_token = await self.redis.get(cache_key)
                if cached_token:
                    logger.debug("从缓存获取会议室 access_token")
                    return cached_token.decode("utf-8") if isinstance(cached_token, bytes) else cached_token
            except Exception as e:
                logger.warning(f"Redis 读取会议室 token 失败（降级）: {e}")

        # 1b. 尝试从内存缓存获取
        if self._meetingroom_token_cache:
            logger.debug("从内存缓存获取会议室 access_token")
            return self._meetingroom_token_cache

        # 2. 缓存未命中，调用企微 API 获取
        logger.info("缓存未命中，调用企微API获取会议室 access_token")
        url = "https://qyapi.weixin.qq.com/cgi-bin/gettoken"
        params = {
            "corpid": settings.wecom_corp_id,
            "corpsecret": settings.wecom_meetingroom_secret,
        }

        try:
            response = await self.client.get(url, params=params)
            result = response.json()

            if result.get("errcode") != 0:
                error_msg = result.get("errmsg", "未知错误")
                logger.error(f"获取会议室 access_token 失败: errcode={result.get('errcode')}, errmsg={error_msg}")
                raise Exception(f"企微API错误: {error_msg}")

            access_token = result["access_token"]
            expires_in = result.get("expires_in", 7200)

            # 3. 缓存到 Redis
            buffer_seconds = 300
            cache_ttl = max(expires_in - buffer_seconds, 60)
            if self.redis:
                try:
                    await self.redis.setex(cache_key, cache_ttl, access_token)
                except Exception as e:
                    logger.warning(f"Redis 写入会议室 token 失败（降级）: {e}")

            # 3b. 同时缓存到内存
            self._meetingroom_token_cache = access_token

            logger.info(f"会议室 access_token 获取成功，缓存 TTL={cache_ttl}秒")
            return access_token

        except httpx.HTTPError as e:
            logger.error(f"获取会议室 access_token 网络错误: {e}")
            raise Exception(f"企微API网络错误: {e}") from e

    # --------------------------------------------------------------------------
    # 会议室管理 API
    # --------------------------------------------------------------------------
    async def get_meetingroom_list(
        self,
        city: Optional[str] = None,
        building: Optional[str] = None,
        floor: Optional[str] = None,
    ) -> List[Dict[str, Any]]:
        """获取会议室列表。

        对应企微API:
            POST https://qyapi.weixin.qq.com/cgi-bin/oa/meetingroom/list

        Args:
            city: 城市名称（可选过滤）
            building: 楼宇名称（可选过滤）
            floor: 楼层名称（可选过滤）

        Returns:
            List[Dict[str, Any]]: 会议室列表，每项含 meetingroom_id/name/capacity/location等

        Raises:
            Exception: 获取失败
        """
        access_token = await self.get_meetingroom_access_token()
        url = f"https://qyapi.weixin.qq.com/cgi-bin/oa/meetingroom/list?access_token={access_token}"

        # 构建请求体（仅包含非空过滤条件）
        payload: Dict[str, Any] = {}
        if city:
            payload["city"] = city
        if building:
            payload["building"] = building
        if floor:
            payload["floor"] = floor

        try:
            response = await self.client.post(url, json=payload)
            result = response.json()

            if result.get("errcode", 0) != 0:
                logger.error(
                    f"获取会议室列表失败: errcode={result.get('errcode')}, errmsg={result.get('errmsg')}"
                )
                raise Exception(f"获取会议室列表失败: {result.get('errmsg')}")

            meetingroom_list = result.get("meetingroom_list", [])
            logger.info(f"获取会议室列表成功: count={len(meetingroom_list)}")
            return meetingroom_list

        except httpx.HTTPError as e:
            logger.error(f"获取会议室列表网络错误: {e}")
            raise Exception(f"获取会议室列表网络错误: {e}") from e

    async def get_booking_info(
        self,
        meetingroom_id: int,
        start_time: str,
        end_time: str,
    ) -> List[Dict[str, Any]]:
        """获取会议室预定状态。

        对应企微API:
            POST https://qyapi.weixin.qq.com/cgi-bin/oa/meetingroom/get_booking_info

        企微API要求传入时间范围（时间戳），不支持跨天查询。

        Args:
            meetingroom_id: 企微会议室ID
            start_time: 查询开始时间（ISO 8601 格式，如 "2026-07-15T00:00:00+08:00"）
            end_time: 查询结束时间（ISO 8601 格式）

        Returns:
            List[Dict[str, Any]]: 预定记录列表

        Raises:
            Exception: 获取失败
        """
        from datetime import datetime

        access_token = await self.get_meetingroom_access_token()
        url = f"https://qyapi.weixin.qq.com/cgi-bin/oa/meetingroom/get_booking_info?access_token={access_token}"

        # 将 ISO 8601 时间转为时间戳（秒）
        start_dt = datetime.fromisoformat(start_time)
        end_dt = datetime.fromisoformat(end_time)
        start_ts = int(start_dt.timestamp())
        end_ts = int(end_dt.timestamp())

        payload = {
            "meetingroom_id": meetingroom_id,
            "start_time": start_ts,
            "end_time": end_ts,
        }

        try:
            response = await self.client.post(url, json=payload)
            result = response.json()

            if result.get("errcode", 0) != 0:
                logger.error(
                    f"获取预定状态失败: meetingroom_id={meetingroom_id}, "
                    f"errcode={result.get('errcode')}, errmsg={result.get('errmsg')}"
                )
                raise Exception(f"获取预定状态失败: {result.get('errmsg')}")

            booking_list = result.get("booking_list", [])
            logger.info(f"获取预定状态成功: meetingroom_id={meetingroom_id}, count={len(booking_list)}")
            return booking_list

        except httpx.HTTPError as e:
            logger.error(f"获取预定状态网络错误: meetingroom_id={meetingroom_id}, error={e}")
            raise Exception(f"获取预定状态网络错误: {e}") from e

    async def book_meetingroom(
        self,
        meetingroom_id: int,
        subject: str,
        start_time: str,
        end_time: str,
        booker: str,
        attendees: Optional[List[str]] = None,
    ) -> Dict[str, Any]:
        """预定会议室。

        对应企微API:
            POST https://qyapi.weixin.qq.com/cgi-bin/oa/meetingroom/book

        时间需按30分钟取整（15:15→15:00, 15:45→16:00）。
        仅可预定无需审批的会议室。

        Args:
            meetingroom_id: 企微会议室ID
            subject: 会议主题
            start_time: 开始时间（ISO 8601 格式）
            end_time: 结束时间（ISO 8601 格式）
            booker: 预定人userid
            attendees: 参与人userid列表（可选）

        Returns:
            Dict[str, Any]: 预定结果，含 booking_id

        Raises:
            Exception: 预定失败
        """
        from datetime import datetime

        access_token = await self.get_meetingroom_access_token()
        url = f"https://qyapi.weixin.qq.com/cgi-bin/oa/meetingroom/book?access_token={access_token}"

        # 将 ISO 8601 时间转为时间戳（秒）
        start_dt = datetime.fromisoformat(start_time)
        end_dt = datetime.fromisoformat(end_time)
        start_ts = int(start_dt.timestamp())
        end_ts = int(end_dt.timestamp())

        payload: Dict[str, Any] = {
            "meetingroom_id": meetingroom_id,
            "subject": subject,
            "start_time": start_ts,
            "end_time": end_ts,
            "booker": booker,
        }
        if attendees:
            payload["attendees"] = attendees

        try:
            response = await self.client.post(url, json=payload)
            result = response.json()

            if result.get("errcode", 0) != 0:
                logger.error(
                    f"预定会议室失败: meetingroom_id={meetingroom_id}, subject={subject}, "
                    f"errcode={result.get('errcode')}, errmsg={result.get('errmsg')}"
                )
                raise Exception(f"预定会议室失败: {result.get('errmsg')}")

            booking_id = result.get("booking_id", "")
            logger.info(f"预定会议室成功: meetingroom_id={meetingroom_id}, booking_id={booking_id}")
            return result

        except httpx.HTTPError as e:
            logger.error(f"预定会议室网络错误: meetingroom_id={meetingroom_id}, error={e}")
            raise Exception(f"预定会议室网络错误: {e}") from e

    async def cancel_booking(
        self,
        booking_id: str,
        meetingroom_id: int,
    ) -> Dict[str, Any]:
        """取消会议室预定。

        对应企微API:
            POST https://qyapi.weixin.qq.com/cgi-bin/oa/meetingroom/cancel_book

        Args:
            booking_id: 企微预定ID
            meetingroom_id: 企微会议室ID

        Returns:
            Dict[str, Any]: 取消结果

        Raises:
            Exception: 取消失败
        """
        access_token = await self.get_meetingroom_access_token()
        url = f"https://qyapi.weixin.qq.com/cgi-bin/oa/meetingroom/cancel_book?access_token={access_token}"

        payload = {
            "meetingroom_id": meetingroom_id,
            "booking_id": booking_id,
        }

        try:
            response = await self.client.post(url, json=payload)
            result = response.json()

            if result.get("errcode", 0) != 0:
                logger.error(
                    f"取消预定失败: booking_id={booking_id}, meetingroom_id={meetingroom_id}, "
                    f"errcode={result.get('errcode')}, errmsg={result.get('errmsg')}"
                )
                raise Exception(f"取消预定失败: {result.get('errmsg')}")

            logger.info(f"取消预定成功: booking_id={booking_id}, meetingroom_id={meetingroom_id}")
            return result

        except httpx.HTTPError as e:
            logger.error(f"取消预定网络错误: booking_id={booking_id}, error={e}")
            raise Exception(f"取消预定网络错误: {e}") from e

    async def get_booking_detail(
        self,
        meetingroom_id: int,
        booking_id: str,
    ) -> Dict[str, Any]:
        """获取预定详情。

        对应企微API:
            POST https://qyapi.weixin.qq.com/cgi-bin/oa/meetingroom/bookinfo/get

        Args:
            meetingroom_id: 企微会议室ID
            booking_id: 企微预定ID

        Returns:
            Dict[str, Any]: 预定详情，含 subject/booker/attendees/start_time/end_time

        Raises:
            Exception: 获取失败
        """
        access_token = await self.get_meetingroom_access_token()
        url = f"https://qyapi.weixin.qq.com/cgi-bin/oa/meetingroom/bookinfo/get?access_token={access_token}"

        payload = {
            "meetingroom_id": meetingroom_id,
            "booking_id": booking_id,
        }

        try:
            response = await self.client.post(url, json=payload)
            result = response.json()

            if result.get("errcode", 0) != 0:
                logger.error(
                    f"获取预定详情失败: booking_id={booking_id}, meetingroom_id={meetingroom_id}, "
                    f"errcode={result.get('errcode')}, errmsg={result.get('errmsg')}"
                )
                raise Exception(f"获取预定详情失败: {result.get('errmsg')}")

            logger.info(f"获取预定详情成功: booking_id={booking_id}")
            return result

        except httpx.HTTPError as e:
            logger.error(f"获取预定详情网络错误: booking_id={booking_id}, error={e}")
            raise Exception(f"获取预定详情网络错误: {e}") from e
    async def send_text_message(
        self, user_id: str, content: str
    ) -> Dict[str, Any]:
        """向员工发送文本消息。

        对应企微API:
            POST https://qyapi.weixin.qq.com/cgi-bin/message/send?access_token=TOKEN

        请求体:
            {
                "touser": "UserID",
                "msgtype": "text",
                "agentid": 1000002,
                "text": {"content": "消息内容"}
            }

        Args:
            user_id: 员工的企微 UserID
            content: 消息内容（纯文本）

        Returns:
            Dict[str, Any]: 企微API返回结果
        """
        access_token = await self.get_access_token()
        url = f"https://qyapi.weixin.qq.com/cgi-bin/message/send?access_token={access_token}"

        payload = {
            "touser": user_id,
            "msgtype": "text",
            "agentid": int(settings.wecom_agent_id),
            "text": {"content": content},
        }

        try:
            response = await self.client.post(url, json=payload)
            result = response.json()

            if result.get("errcode") != 0:
                logger.error(
                    f"发送文本消息失败: user_id={user_id}, "
                    f"errcode={result.get('errcode')}, errmsg={result.get('errmsg')}"
                )
            else:
                logger.info(f"发送文本消息成功: user_id={user_id}")

            return result

        except httpx.HTTPError as e:
            logger.error(f"发送文本消息网络错误: user_id={user_id}, error={e}")
            raise Exception(f"发送消息网络错误: {e}") from e

    # --------------------------------------------------------------------------
    # 发送卡片消息
    # --------------------------------------------------------------------------
    async def send_card_message(
        self,
        user_id: str,
        title: str,
        description: str,
        url: str = "",
        btntxt: str = "详情",
    ) -> Dict[str, Any]:
        """向员工发送文本卡片消息。

        对应企微API:
            POST https://qyapi.weixin.qq.com/cgi-bin/message/send?access_token=TOKEN

        请求体:
            {
                "touser": "UserID",
                "msgtype": "textcard",
                "agentid": 1000002,
                "textcard": {
                    "title": "标题",
                    "description": "描述",
                    "url": "链接",
                    "btntxt": "按钮文字"
                }
            }

        Args:
            user_id: 员工的企微 UserID
            title: 卡片标题
            description: 卡片描述
            url: 卡片点击跳转链接
            btntxt: 按钮文字（默认"详情"）

        Returns:
            Dict[str, Any]: 企微API返回结果
        """
        access_token = await self.get_access_token()
        url_api = f"https://qyapi.weixin.qq.com/cgi-bin/message/send?access_token={access_token}"

        payload = {
            "touser": user_id,
            "msgtype": "textcard",
            "agentid": int(settings.wecom_agent_id),
            "textcard": {
                "title": title,
                "description": description,
                "url": url,
                "btntxt": btntxt,
            },
        }

        try:
            response = await self.client.post(url_api, json=payload)
            result = response.json()

            if result.get("errcode") != 0:
                logger.error(
                    f"发送卡片消息失败: user_id={user_id}, "
                    f"errcode={result.get('errcode')}, errmsg={result.get('errmsg')}"
                )
            else:
                logger.info(f"发送卡片消息成功: user_id={user_id}")

            return result

        except httpx.HTTPError as e:
            logger.error(f"发送卡片消息网络错误: user_id={user_id}, error={e}")
            raise Exception(f"发送消息网络错误: {e}") from e

    # --------------------------------------------------------------------------
    # 发送模板卡片消息 (text_notice)
    # --------------------------------------------------------------------------
    async def send_template_card_message(
        self,
        user_id: str,
        main_title: str,
        main_title_desc: str = "",
        sub_title_text: str = "",
        emphasis_title: str = "",
        emphasis_desc: str = "",
        jump_list: Optional[List[Dict[str, Any]]] = None,
        card_action_url: str = "",
        source_icon: str = "",
        source_desc: str = "",
        horizontal_content_list: Optional[List[Dict[str, str]]] = None,
    ) -> Dict[str, Any]:
        """向员工发送模板卡片消息（text_notice类型）。

        对应企微API:
            POST https://qyapi.weixin.qq.com/cgi-bin/message/send?access_token=TOKEN
            
        请求体 (text_notice):
            {
                "touser": "UserID",
                "msgtype": "template_card",
                "agentid": 1000002,
                "template_card": {
                    "card_type": "text_notice",
                    "source": {
                        "icon_url": "来源图标URL",
                        "desc": "来源描述"
                    },
                    "main_title": {
                        "title": "一级标题",
                        "desc": "标题辅助信息"
                    },
                    "sub_title_text": "二级普通文本",
                    "emphasis_content": {
                        "title": "关键数据",
                        "desc": "描述"
                    },
                    "horizontal_content_list": [
                        {"keyname": "标题", "value": "内容"}
                    ],
                    "jump_list": [
                        {
                            "type": 1,
                            "title": "跳转链接文案",
                            "url": "https://..."
                        }
                    ],
                    "card_action": {
                        "type": 1,
                        "url": "https://..."
                    }
                }
            }
            
        Args:
            user_id: 员工的企微 UserID
            main_title: 主标题（一级标题）
            main_title_desc: 主标题辅助信息
            sub_title_text: 二级普通文本
            emphasis_title: 关键数据标题（如剩余时间）
            emphasis_desc: 关键数据描述
            jump_list: 跳转按钮列表（每项含 type/title/url）
            card_action_url: 卡片整体点击跳转链接
            source_icon: 来源图标URL（可选，如企微agent头像）
            source_desc: 来源描述（如"IT智能服务台"）
            horizontal_content_list: 关键信息列表 [{"keyname": "标题", "value": "内容"}]
            
        Returns:
            Dict[str, Any]: 企微API返回结果
        """
        access_token = await self.get_access_token()
        url_api = f"https://qyapi.weixin.qq.com/cgi-bin/message/send?access_token={access_token}"

        # 构建 template_card 结构
        template_card: Dict[str, Any] = {
            "card_type": "text_notice",
            "main_title": {
                "title": main_title,
            }
        }

        # 添加来源信息（可选）
        if source_icon or source_desc:
            template_card["source"] = {}
            if source_icon:
                template_card["source"]["icon_url"] = source_icon
            if source_desc:
                template_card["source"]["desc"] = source_desc

        # 添加主标题辅助信息（可选）
        if main_title_desc:
            template_card["main_title"]["desc"] = main_title_desc

        # 添加二级普通文本（可选）
        if sub_title_text:
            template_card["sub_title_text"] = sub_title_text

        # 添加关键数据高亮（可选）
        if emphasis_title:
            template_card["emphasis_content"] = {
                "title": emphasis_title,
            }
            if emphasis_desc:
                template_card["emphasis_content"]["desc"] = emphasis_desc

        # 添加关键信息列表（可选）
        if horizontal_content_list:
            template_card["horizontal_content_list"] = horizontal_content_list

        # 添加跳转按钮列表（可选）
        if jump_list:
            template_card["jump_list"] = jump_list

        # 添加卡片整体点击事件（可选）
        if card_action_url:
            template_card["card_action"] = {
                "type": 1,  # 跳转URL
                "url": card_action_url,
            }

        payload = {
            "touser": user_id,
            "msgtype": "template_card",
            "agentid": int(settings.wecom_agent_id),
            "template_card": template_card,
        }

        try:
            response = await self.client.post(url_api, json=payload)
            result = response.json()

            if result.get("errcode") != 0:
                logger.error(
                    f"发送模板卡片消息失败: user_id={user_id}, "
                    f"errcode={result.get('errcode')}, errmsg={result.get('errmsg')}"
                )
            else:
                logger.info(f"发送模板卡片消息成功: user_id={user_id}")

            return result

        except httpx.HTTPError as e:
            logger.error(f"发送模板卡片消息网络错误: user_id={user_id}, error={e}")
            raise Exception(f"发送消息网络错误: {e}") from e

    # --------------------------------------------------------------------------
    # 发送图片消息
    # --------------------------------------------------------------------------
    async def send_image_message(
        self, user_id: str, media_id: str
    ) -> Dict[str, Any]:
        """向员工发送图片消息。

        对应企微API:
            POST https://qyapi.weixin.qq.com/cgi-bin/message/send?access_token=TOKEN

        请求体:
            {
                "touser": "UserID",
                "msgtype": "image",
                "agentid": 1000002,
                "image": {"media_id": "MEDIA_ID"}
            }

        注意：发送图片前需要先通过 upload_temp_media 上传图片获取 media_id。

        Args:
            user_id: 员工的企微 UserID
            media_id: 图片媒体ID（通过上传临时素材获取）

        Returns:
            Dict[str, Any]: 企微API返回结果
        """
        access_token = await self.get_access_token()
        url = f"https://qyapi.weixin.qq.com/cgi-bin/message/send?access_token={access_token}"

        payload = {
            "touser": user_id,
            "msgtype": "image",
            "agentid": int(settings.wecom_agent_id),
            "image": {"media_id": media_id},
        }

        try:
            response = await self.client.post(url, json=payload)
            result = response.json()

            if result.get("errcode") != 0:
                logger.error(
                    f"发送图片消息失败: user_id={user_id}, "
                    f"errcode={result.get('errcode')}, errmsg={result.get('errmsg')}"
                )
            else:
                logger.info(f"发送图片消息成功: user_id={user_id}")

            return result

        except httpx.HTTPError as e:
            logger.error(f"发送图片消息网络错误: user_id={user_id}, error={e}")
            raise Exception(f"发送消息网络错误: {e}") from e

    # --------------------------------------------------------------------------
    # 发送文件消息
    # --------------------------------------------------------------------------
    async def send_file_message(
        self, user_id: str, media_id: str
    ) -> Dict[str, Any]:
        """向员工发送文件消息。

        对应企微API:
            POST https://qyapi.weixin.qq.com/cgi-bin/message/send?access_token=TOKEN

        请求体:
            {
                "touser": "UserID",
                "msgtype": "file",
                "agentid": 1000002,
                "file": {"media_id": "MEDIA_ID"}
            }

        注意：发送文件前需要先通过 upload_temp_media 上传文件获取 media_id。

        Args:
            user_id: 员工的企微 UserID
            media_id: 文件媒体ID（通过上传临时素材获取）

        Returns:
            Dict[str, Any]: 企微API返回结果
        """
        access_token = await self.get_access_token()
        url = f"https://qyapi.weixin.qq.com/cgi-bin/message/send?access_token={access_token}"

        payload = {
            "touser": user_id,
            "msgtype": "file",
            "agentid": int(settings.wecom_agent_id),
            "file": {"media_id": media_id},
        }

        try:
            response = await self.client.post(url, json=payload)
            result = response.json()

            if result.get("errcode") != 0:
                logger.error(
                    f"发送文件消息失败: user_id={user_id}, "
                    f"errcode={result.get('errcode')}, errmsg={result.get('errmsg')}"
                )
            else:
                logger.info(f"发送文件消息成功: user_id={user_id}")

            return result

        except httpx.HTTPError as e:
            logger.error(f"发送文件消息网络错误: user_id={user_id}, error={e}")
            raise Exception(f"发送消息网络错误: {e}") from e

    # --------------------------------------------------------------------------
    # 获取员工通讯录信息
    # --------------------------------------------------------------------------
    async def get_user_info(self, user_id: str) -> Dict[str, Any]:
        """获取员工通讯录详细信息（用于 VIP 判断）。

        对应企微API:
            GET https://qyapi.weixin.qq.com/cgi-bin/user/get?access_token=TOKEN&userid=USERID

        返回数据包含:
            - userid: 员工UserID
            - name: 员工姓名
            - department: 部门ID列表
            - position: 岗位
            - mobile: 手机号
            - email: 邮箱
            - status: 激活状态

        需要企微通讯录只读权限。

        Args:
            user_id: 员工的企微 UserID

        Returns:
            Dict[str, Any]: 员工信息字典

        Raises:
            Exception: 获取失败
        """
        access_token = await self.get_access_token()
        url = "https://qyapi.weixin.qq.com/cgi-bin/user/get"
        params = {
            "access_token": access_token,
            "userid": user_id,
        }

        try:
            response = await self.client.get(url, params=params)
            result = response.json()

            if result.get("errcode", 0) != 0:
                logger.error(
                    f"获取员工信息失败: user_id={user_id}, "
                    f"errcode={result.get('errcode')}, errmsg={result.get('errmsg')}"
                )
                raise Exception(f"获取员工信息失败: {result.get('errmsg')}")

            logger.info(f"获取员工信息成功: user_id={user_id}, name={result.get('name', '')}")
            return result

        except httpx.HTTPError as e:
            logger.error(f"获取员工信息网络错误: user_id={user_id}, error={e}")
            raise Exception(f"获取员工信息网络错误: {e}") from e

    # --------------------------------------------------------------------------
    # 获取部门成员列表
    # --------------------------------------------------------------------------
    async def get_department_members(
        self, department_id: int = 1, fetch_child: int = 1
    ) -> List[Dict[str, Any]]:
        """获取部门成员列表。

        对应企微API:
            GET https://qyapi.weixin.qq.com/cgi-bin/user/list?access_token=TOKEN&department_id=ID&fetch_child=1

        Args:
            department_id: 部门ID（默认1为根部门）
            fetch_child: 是否递归获取子部门（1=是, 0=否）

        Returns:
            List[Dict[str, Any]]: 部门成员列表

        Raises:
            Exception: 获取失败
        """
        access_token = await self.get_contact_access_token()
        url = "https://qyapi.weixin.qq.com/cgi-bin/user/list"
        params = {
            "access_token": access_token,
            "department_id": department_id,
            "fetch_child": fetch_child,
        }

        try:
            response = await self.client.get(url, params=params)
            result = response.json()

            if result.get("errcode", 0) != 0:
                logger.error(
                    f"获取部门成员失败: dept_id={department_id}, "
                    f"errcode={result.get('errcode')}, errmsg={result.get('errmsg')}"
                )
                raise Exception(f"获取部门成员失败: {result.get('errmsg')}")

            userlist = result.get("userlist", [])
            logger.info(f"获取部门成员成功: dept_id={department_id}, count={len(userlist)}")
            return userlist

        except httpx.HTTPError as e:
            logger.error(f"获取部门成员网络错误: dept_id={department_id}, error={e}")
            raise Exception(f"获取部门成员网络错误: {e}") from e

    # --------------------------------------------------------------------------
    # 获取部门列表
    # --------------------------------------------------------------------------
    async def get_department_list(self, department_id: Optional[int] = None) -> List[Dict[str, Any]]:
        """获取部门列表。

        对应企微API:
            GET https://qyapi.weixin.qq.com/cgi-bin/department/list?access_token=TOKEN&id=ID

        返回部门列表，每个部门包含 id（部门ID）、name（部门名称）、parentid（父部门ID）。
        不传 department_id 时返回全量部门列表。

        用于将 user/list 返回的成员 department ID 列表（如 [1,2]）解析为可读的部门名称。

        需要企微通讯录只读权限。

        Args:
            department_id: 父部门ID（可选）。不传则返回全量部门列表；
                           传入时返回该部门及其子部门。

        Returns:
            List[Dict[str, Any]]: 部门列表，每项含 id/name/parentid

        Raises:
            Exception: 获取失败
        """
        access_token = await self.get_contact_access_token()
        url = "https://qyapi.weixin.qq.com/cgi-bin/department/list"
        params: Dict[str, Any] = {
            "access_token": access_token,
        }
        # department_id 为 None 时不传，企微返回全量部门列表
        if department_id is not None:
            params["id"] = department_id

        try:
            response = await self.client.get(url, params=params)
            result = response.json()

            if result.get("errcode", 0) != 0:
                logger.error(
                    f"获取部门列表失败: dept_id={department_id}, "
                    f"errcode={result.get('errcode')}, errmsg={result.get('errmsg')}"
                )
                raise Exception(f"获取部门列表失败: {result.get('errmsg')}")

            department_list = result.get("department", [])
            logger.info(f"获取部门列表成功: count={len(department_list)}")
            return department_list

        except httpx.HTTPError as e:
            logger.error(f"获取部门列表网络错误: dept_id={department_id}, error={e}")
            raise Exception(f"获取部门列表网络错误: {e}") from e

    # --------------------------------------------------------------------------
    # JS-SDK 票据 (v0.5.4:应急页身份检测用)
    # --------------------------------------------------------------------------
    async def get_jsapi_ticket(self) -> str:
        """获取企微 JS-SDK 票据 jsapi_ticket。

        对应企微API:
            GET https://qyapi.weixin.qq.com/cgi-bin/get_jsapi_ticket?access_token=TOKEN

        jsapi_ticket 用于计算 JS-SDK 签名(sha1),让前端 wx.config/wx.agentConfig 鉴权通过。
        有效期 7200 秒,缓存到 Redis(提前 300 秒刷新)。

        Returns:
            str: jsapi_ticket 字符串

        Raises:
            Exception: 获取失败
        """
        cache_key = "wecom:jsapi_ticket"

        # 1. Redis 缓存
        if self.redis:
            try:
                cached = await self.redis.get(cache_key)
                if cached:
                    logger.debug("从缓存获取 jsapi_ticket")
                    return cached.decode("utf-8")
            except Exception as e:
                logger.warning(f"Redis 读取 jsapi_ticket 失败（降级）: {e}")

        # 2. 调用企微 API
        access_token = await self.get_access_token()
        url = f"https://qyapi.weixin.qq.com/cgi-bin/get_jsapi_ticket?access_token={access_token}"

        try:
            response = await self.client.get(url)
            result = response.json()

            if result.get("errcode", 0) != 0:
                logger.error(
                    f"获取 jsapi_ticket 失败: "
                    f"errcode={result.get('errcode')}, errmsg={result.get('errmsg')}"
                )
                raise Exception(f"获取 jsapi_ticket 失败: {result.get('errmsg')}")

            ticket = result.get("ticket", "")
            expires_in = result.get("expires_in", 7200)

            # 3. 缓存到 Redis(TTL = expires_in - 300s)
            cache_ttl = max(expires_in - 300, 60)
            if self.redis:
                try:
                    await self.redis.setex(cache_key, cache_ttl, ticket)
                except Exception as e:
                    logger.warning(f"Redis 写入 jsapi_ticket 失败（降级）: {e}")

            logger.info(f"jsapi_ticket 获取成功，缓存 TTL={cache_ttl}秒")
            return ticket

        except httpx.HTTPError as e:
            logger.error(f"获取 jsapi_ticket 网络错误: {e}")
            raise Exception(f"企微API网络错误: {e}") from e

    async def get_agent_config_ticket(self) -> str:
        """获取企微 agent_config_ticket。

        对应企微API:
            GET https://qyapi.weixin.qq.com/cgi-bin/ticket/get?type=agent_config&access_token=TOKEN

        agent_config_ticket 用于 wx.agentConfig() 的签名计算。
        与 jsapi_ticket 是不同的票据，不能混用。
        有效期 7200 秒，缓存到 Redis（提前 300 秒刷新）。

        Returns:
            str: agent_config_ticket 字符串

        Raises:
            Exception: 获取失败
        """
        cache_key = "wecom:agent_config_ticket"

        # 1. Redis 缓存
        if self.redis:
            try:
                cached = await self.redis.get(cache_key)
                if cached:
                    if isinstance(cached, bytes):
                        cached = cached.decode("utf-8")
                    logger.debug("从缓存获取 agent_config_ticket")
                    return cached
            except Exception as e:
                logger.warning(f"Redis 读取 agent_config_ticket 失败（降级）: {e}")

        # 2. 调用企微 API
        access_token = await self.get_access_token()
        url = (
            f"https://qyapi.weixin.qq.com/cgi-bin/ticket/get"
            f"?type=agent_config&access_token={access_token}"
        )

        try:
            response = await self.client.get(url)
            result = response.json()

            if result.get("errcode", 0) != 0:
                logger.error(
                    f"获取 agent_config_ticket 失败: "
                    f"errcode={result.get('errcode')}, errmsg={result.get('errmsg')}"
                )
                raise Exception(
                    f"获取 agent_config_ticket 失败: {result.get('errmsg')}"
                )

            ticket = result.get("ticket", "")
            expires_in = result.get("expires_in", 7200)

            # 3. 缓存到 Redis（TTL = expires_in - 300s）
            cache_ttl = max(expires_in - 300, 60)
            if self.redis:
                try:
                    await self.redis.setex(cache_key, cache_ttl, ticket)
                except Exception as e:
                    logger.warning(
                        f"Redis 写入 agent_config_ticket 失败（降级）: {e}"
                    )

            logger.info(
                f"agent_config_ticket 获取成功，缓存 TTL={cache_ttl}秒"
            )
            return ticket

        except httpx.HTTPError as e:
            logger.error(f"获取 agent_config_ticket 网络错误: {e}")
            raise Exception(f"企微API网络错误: {e}") from e

    @staticmethod
    def generate_jsapi_signature(
        ticket: str, nonce_str: str, timestamp: int, url: str
    ) -> str:
        """生成 JS-SDK 签名(sha1)。

        对应企微JS-SDK签名算法:
            1. 拼接:jsapi_ticket={ticket}&noncestr={nonce_str}&timestamp={timestamp}&url={url}
            2. sha1(拼接字符串)

        注意:
            - url 不含 # 及其后面部分
            - url 不含 ?
            - url 是前端调用 wx.config 的页面 URL
            - 此方法同时用于 jsapi_ticket 和 agent_config_ticket 的签名计算
              （签名算法相同，只是 ticket 不同）

        Args:
            ticket: jsapi_ticket 或 agent_config_ticket
            nonce_str: 随机字符串(前端生成,16位)
            timestamp: 当前时间戳(秒)
            url: 当前页面 URL(不含 # 后面)

        Returns:
            str: sha1 签名字符串(40 字符)
        """
        import hashlib

        # 拼接签名字符串
        raw = f"jsapi_ticket={ticket}&noncestr={nonce_str}&timestamp={timestamp}&url={url}"
        # sha1 哈希
        signature = hashlib.sha1(raw.encode("utf-8")).hexdigest()
        return signature

    # --------------------------------------------------------------------------
    # 上传临时素材
    # --------------------------------------------------------------------------
    async def upload_temp_media(
        self, media_type: str, file_data: bytes, filename: str = "upload"
    ) -> str:
        """上传临时素材（图片/文件/语音），获取 media_id。

        对应企微API:
            POST https://qyapi.weixin.qq.com/cgi-bin/media/upload?access_token=TOKEN&type=TYPE

        临时素材有效期 3 天，适用于发送图片/文件消息。

        Args:
            media_type: 媒体类型（image/file/voice）
            file_data: 文件二进制数据
            filename: 文件名

        Returns:
            str: media_id（用于发送图片/文件消息时引用）

        Raises:
            Exception: 上传失败
        """
        access_token = await self.get_access_token()
        url = f"https://qyapi.weixin.qq.com/cgi-bin/media/upload?access_token={access_token}&type={media_type}"

        try:
            # 使用 multipart 上传文件
            files = {"media": (filename, file_data)}
            response = await self.client.post(url, files=files)
            result = response.json()

            if result.get("errcode", 0) != 0:
                logger.error(
                    f"上传临时素材失败: type={media_type}, "
                    f"errcode={result.get('errcode')}, errmsg={result.get('errmsg')}"
                )
                raise Exception(f"上传临时素材失败: {result.get('errmsg')}")

            media_id = result.get("media_id", "")
            logger.info(f"上传临时素材成功: type={media_type}, media_id={media_id}")
            return media_id

        except httpx.HTTPError as e:
            logger.error(f"上传临时素材网络错误: type={media_type}, error={e}")
            raise Exception(f"上传临时素材网络错误: {e}") from e

    # --------------------------------------------------------------------------
    # 下载临时素材
    # --------------------------------------------------------------------------
    async def download_temp_media(self, media_id: str) -> bytes:
        """下载临时素材（图片/文件/语音），返回二进制数据。

        对应企微API:
            GET https://qyapi.weixin.qq.com/cgi-bin/media/get?access_token=TOKEN&media_id=MEDIA_ID

        用于将企微回调中的图片/文件下载到本地服务器保存。

        Args:
            media_id: 媒体文件ID（企微回调中的 MediaId）

        Returns:
            bytes: 媒体文件的二进制数据

        Raises:
            Exception: 下载失败
        """
        access_token = await self.get_access_token()
        url = "https://qyapi.weixin.qq.com/cgi-bin/media/get"
        params = {
            "access_token": access_token,
            "media_id": media_id,
        }

        try:
            logger.info(f"开始下载临时素材: media_id={media_id}")
            response = await self.client.get(url, params=params)

            # 检查返回的是否是JSON错误响应
            content_type = response.headers.get("content-type", "")
            if "application/json" in content_type:
                result = response.json()
                if result.get("errcode") != 0:
                    errmsg = result.get("errmsg", "未知错误")
                    logger.error(f"下载临时素材失败: media_id={media_id}, errcode={result.get('errcode')}, errmsg={errmsg}")
                    raise Exception(f"下载临时素材失败: {errmsg}")

            # 返回二进制数据
            logger.info(f"下载临时素材成功: media_id={media_id}, size={len(response.content)} bytes")
            return response.content

        except httpx.HTTPError as e:
            logger.error(f"下载临时素材网络错误: media_id={media_id}, error={e}")
            raise Exception(f"下载临时素材网络错误: {e}") from e

    # --------------------------------------------------------------------------
    # OAuth2 授权换算用户身份
    # --------------------------------------------------------------------------
    async def get_oauth_user_info(self, code: str) -> Dict[str, str]:
        """通过 OAuth2 授权码换取员工身份信息。

        对应企微API:
            GET https://qyapi.weixin.qq.com/cgi-bin/auth/getuserinfo?access_token=TOKEN&code=CODE

        H5 页面通过企微 OAuth2 静默授权获取 code，后端用 code 换取员工 UserID。
        适用于 H5 用户端身份识别。

        Args:
            code: 企微 OAuth2 授权码

        Returns:
            Dict[str, str]: 包含 userid 和 user_ticket 的字典

        Raises:
            Exception: 换取失败
        """
        access_token = await self.get_access_token()
        url = "https://qyapi.weixin.qq.com/cgi-bin/auth/getuserinfo"
        params = {
            "access_token": access_token,
            "code": code,
        }

        try:
            response = await self.client.get(url, params=params)
            result = response.json()

            if result.get("errcode", 0) != 0:
                logger.error(
                    f"OAuth2换取用户身份失败: code={code}, "
                    f"errcode={result.get('errcode')}, errmsg={result.get('errmsg')}"
                )
                raise Exception(f"OAuth2换取用户身份失败: {result.get('errmsg')}")

            user_id = result.get("userid", "")
            logger.info(f"OAuth2换取用户身份成功: userid={user_id}")
            return {
                "userid": user_id,
                "user_ticket": result.get("user_ticket", ""),
            }

        except httpx.HTTPError as e:
            logger.error(f"OAuth2换取用户身份网络错误: code={code}, error={e}")
            raise Exception(f"OAuth2换取用户身份网络错误: {e}") from e

    # --------------------------------------------------------------------------
    # 关闭客户端
    # --------------------------------------------------------------------------
    async def close(self) -> None:
        """关闭 HTTP 客户端连接池。

        应用关闭时调用，释放资源。
        """
        await self.client.aclose()
        logger.info("WecomService HTTP 客户端已关闭")