"""
通知模块 - 支持钉钉、日志等多种通知方式
"""

import requests
import time
import hmac
import hashlib
import base64
import urllib.parse
from loguru import logger
from typing import Optional

from config.settings import get_dingtalk_config


class DingTalkBot:
    """钉钉机器人类"""

    def __init__(self, webhook: str = None, secret: str = None):
        """
        初始化钉钉机器人

        Args:
            webhook: 钉钉自定义机器人webhook地址
            secret: 加签密钥（可选）
        """
        config = get_dingtalk_config()
        self.webhook = webhook or config.get("webhook", "")
        self.secret = secret or config.get("secret", "")

        if not self.webhook:
            logger.warning("钉钉webhook未配置，消息将不会被发送")

    def _gen_signed_url(self) -> str:
        """生成带签名的URL"""
        if not self.secret:
            return self.webhook

        timestamp = str(round(time.time() * 1000))
        secret_enc = self.secret.encode("utf-8")
        string_to_sign = f"{timestamp}\n{self.secret}"
        string_to_sign_enc = string_to_sign.encode("utf-8")
        hmac_code = hmac.new(
            secret_enc, string_to_sign_enc, digestmod=hashlib.sha256
        ).digest()
        sign = urllib.parse.quote_plus(base64.b64encode(hmac_code))
        return f"{self.webhook}&timestamp={timestamp}&sign={sign}"

    def send_text(
        self, content: str, at_mobiles: list = None, is_at_all: bool = False
    ) -> bool:
        """
        发送文本消息

        Args:
            content: 消息内容
            at_mobiles: 需要@的手机号列表
            is_at_all: 是否@所有人

        Returns:
            bool: 是否发送成功
        """
        if not self.webhook:
            logger.warning(f"[钉钉消息未发送] {content[:100]}...")
            return False

        at_mobiles = at_mobiles or []
        data = {
            "msgtype": "text",
            "text": {"content": content},
            "at": {"atMobiles": at_mobiles, "isAtAll": is_at_all},
        }

        url = self._gen_signed_url()

        try:
            response = requests.post(url, json=data, timeout=5)
            response.raise_for_status()
            result = response.json()
            if result.get("errcode", -1) != 0:
                logger.error(f"钉钉消息发送失败: {result}")
                return False
            logger.info("钉钉消息发送成功")
            return True
        except Exception as e:
            logger.error(f"钉钉消息发送异常: {e}")
            return False

    def send_markdown(
        self,
        title: str,
        text: str,
        at_mobiles: list = None,
        is_at_all: bool = False,
    ) -> bool:
        """
        发送markdown消息

        Args:
            title: 消息标题
            text: markdown格式的消息内容
            at_mobiles: 需要@的手机号列表
            is_at_all: 是否@所有人

        Returns:
            bool: 是否发送成功
        """
        if not self.webhook:
            logger.warning(f"[钉钉Markdown未发送] {title}")
            return False

        at_mobiles = at_mobiles or []
        data = {
            "msgtype": "markdown",
            "markdown": {"title": title, "text": text},
            "at": {"atMobiles": at_mobiles, "isAtAll": is_at_all},
        }

        url = self._gen_signed_url()

        try:
            response = requests.post(url, json=data, timeout=5)
            response.raise_for_status()
            result = response.json()
            if result.get("errcode", -1) != 0:
                logger.error(f"钉钉markdown消息发送失败: {result}")
                return False
            logger.info("钉钉markdown消息发送成功")
            return True
        except Exception as e:
            logger.error(f"钉钉markdown消息发送异常: {e}")
            return False


class NotificationManager:
    """通知管理器 - 统一管理多种通知渠道"""

    def __init__(self):
        self.dingtalk = DingTalkBot()

    def notify(self, message: str, title: str = "系统通知", use_markdown: bool = False):
        """
        发送通知（优先使用钉钉，失败则记录日志）

        Args:
            message: 消息内容
            title: 消息标题（markdown模式使用）
            use_markdown: 是否使用markdown格式
        """
        if use_markdown:
            success = self.dingtalk.send_markdown(title, message)
        else:
            success = self.dingtalk.send_text(message)

        if not success:
            # 钉钉发送失败，记录到日志
            logger.info(f"[通知] {title}: {message}")

    def notify_error(self, error_msg: str):
        """发送错误通知"""
        markdown = f"""## 错误告警

**时间**: {time.strftime('%Y-%m-%d %H:%M:%S')}

**错误信息**:
```
{error_msg}
```
"""
        self.notify(markdown, title="系统错误", use_markdown=True)

    def notify_signal(self, signals: list, signal_type: str = "CCI超卖"):
        """
        发送交易信号通知

        Args:
            signals: 信号列表，每项为dict包含code, name等指标
            signal_type: 信号类型名称
        """
        if not signals:
            logger.info(f"[{signal_type}] 无信号")
            return

        # 构建markdown表格
        if signals:
            headers = signals[0].keys()
            header_line = " | ".join(headers)
            separator = " | ".join(["---"] * len(headers))

            rows = []
            for s in signals:
                row = " | ".join(str(v) for v in s.values())
                rows.append(row)

            table = f"{header_line}\n{separator}\n" + "\n".join(rows)
        else:
            table = "无"

        markdown = f"""## {signal_type}信号

**时间**: {time.strftime('%Y-%m-%d %H:%M:%S')}

**筛选结果**:

{table}

共 {len(signals)} 个标的符合筛选条件。
"""
        self.notify(markdown, title=f"{signal_type}信号", use_markdown=True)