import os
import httpx
from packages.core.logger import app_logger

# 告警 Webhook 配置（从环境变量读取）
FEISHU_WEBHOOK_URL = os.getenv("FEISHU_WEBHOOK_URL")
DINGTALK_WEBHOOK_URL = os.getenv("DINGTALK_WEBHOOK_URL")
WECOM_WEBHOOK_URL = os.getenv("WECOM_WEBHOOK_URL")

async def send_alert(title: str, message: str, level: str = "warning"):
    """
    通用告警模块：接入钉钉/飞书/企业微信机器人的 Webhook。
    支持同时发送到多个渠道。
    
    Args:
        title: 告警标题
        message: 告警详情
        level: 告警级别 (warning/error/critical)
    """
    alert_msg = f"🚨 [ALERT - {level.upper()}] {title}: {message}"
    
    # 记录日志
    if level == "critical" or level == "error":
        app_logger.error(alert_msg)
    else:
        app_logger.warning(alert_msg)
    
    # 确定告警颜色和图标
    if level == "critical":
        color = "red"
        emoji = "🔴"
    elif level == "error":
        color = "orange"
        emoji = "🟠"
    else:
        color = "yellow"
        emoji = "🟡"
    
    # 发送到飞书
    if FEISHU_WEBHOOK_URL:
        await _send_to_feishu(title, message, level, emoji)
    
    # 发送到钉钉
    if DINGTALK_WEBHOOK_URL:
        await _send_to_dingtalk(title, message, level, emoji)
    
    # 发送到企业微信
    if WECOM_WEBHOOK_URL:
        await _send_to_wecom(title, message, level, emoji)


async def _send_to_feishu(title: str, message: str, level: str, emoji: str):
    """发送告警到飞书机器人"""
    try:
        payload = {
            "msg_type": "interactive",
            "card": {
                "header": {
                    "title": {
                        "content": f"{emoji} {title}",
                        "tag": "plain_text"
                    },
                    "template": "red" if level == "critical" else "orange" if level == "error" else "yellow"
                },
                "elements": [
                    {
                        "tag": "div",
                        "text": {
                            "content": f"**级别**: {level.upper()}\n\n**详情**:\n{message}",
                            "tag": "lark_md"
                        }
                    },
                    {
                        "tag": "hr"
                    },
                    {
                        "tag": "note",
                        "elements": [
                            {
                                "tag": "plain_text",
                                "content": f"海关数据系统告警 - {level.upper()}"
                            }
                        ]
                    }
                ]
            }
        }
        
        async with httpx.AsyncClient(timeout=10.0) as client:
            response = await client.post(FEISHU_WEBHOOK_URL, json=payload)
            if response.status_code == 200:
                app_logger.info(f"Alert sent to Feishu successfully: {title}")
            else:
                app_logger.error(f"Failed to send alert to Feishu: {response.text}")
    except Exception as e:
        app_logger.error(f"Error sending alert to Feishu: {e}")


async def _send_to_dingtalk(title: str, message: str, level: str, emoji: str):
    """发送告警到钉钉机器人"""
    try:
        payload = {
            "msgtype": "markdown",
            "markdown": {
                "title": f"{emoji} {title}",
                "text": f"### {emoji} {title}\n\n"
                        f"**级别**: {level.upper()}\n\n"
                        f"**详情**:\n\n{message}\n\n"
                        f"---\n\n"
                        f"*海关数据系统告警*"
            }
        }
        
        async with httpx.AsyncClient(timeout=10.0) as client:
            response = await client.post(DINGTALK_WEBHOOK_URL, json=payload)
            if response.status_code == 200:
                app_logger.info(f"Alert sent to DingTalk successfully: {title}")
            else:
                app_logger.error(f"Failed to send alert to DingTalk: {response.text}")
    except Exception as e:
        app_logger.error(f"Error sending alert to DingTalk: {e}")


async def _send_to_wecom(title: str, message: str, level: str, emoji: str):
    """发送告警到企业微信机器人"""
    try:
        payload = {
            "msgtype": "markdown",
            "markdown": {
                "content": f"## {emoji} {title}\n\n"
                           f"**级别**: <font color=\"warning\">{level.upper()}</font>\n\n"
                           f"**详情**:\n{message}\n\n"
                           f"> 海关数据系统告警"
            }
        }
        
        async with httpx.AsyncClient(timeout=10.0) as client:
            response = await client.post(WECOM_WEBHOOK_URL, json=payload)
            if response.status_code == 200:
                app_logger.info(f"Alert sent to WeCom successfully: {title}")
            else:
                app_logger.error(f"Failed to send alert to WeCom: {response.text}")
    except Exception as e:
        app_logger.error(f"Error sending alert to WeCom: {e}")


def send_alert_sync(title: str, message: str, level: str = "warning"):
    """
    同步版本的告警发送（用于非异步上下文）
    """
    import asyncio
    try:
        asyncio.create_task(send_alert(title, message, level))
    except RuntimeError:
        # 如果没有运行中的事件循环，只记录日志
        alert_msg = f"🚨 [ALERT - {level.upper()}] {title}: {message}"
        if level == "critical" or level == "error":
            app_logger.error(alert_msg)
        else:
            app_logger.warning(alert_msg)