#!/usr/bin/env python3
"""
Webhook 推送工具
"""

import requests
import logging
from typing import Dict, List, Optional
from .models import Instance, MeetingInstanceMap

logger = logging.getLogger(__name__)


def push_message_to_instances(meeting_id: str, message: Dict, target_agent_ids: Optional[List[str]] = None):
    """
    推送消息到相关实例
    
    Args:
        meeting_id: 会议 ID
        message: 消息数据（字典）
        target_agent_ids: 目标 Agent ID 列表（None 表示广播给所有）
    """
    # 找到参与该会议的实例
    maps = MeetingInstanceMap.objects.filter(
        meeting_id=meeting_id,
        left_at__isnull=True,
        instance__is_active=True,
        instance__webhook_enabled=True
    ).select_related('instance')
    
    for mapping in maps:
        instance = mapping.instance
        
        # 确定要推送的 Agent
        if target_agent_ids:
            # 只推送给指定的 Agent
            agents_to_notify = [aid for aid in mapping.agent_ids if aid in target_agent_ids]
        else:
            # 广播给所有
            agents_to_notify = mapping.agent_ids
        
        if not agents_to_notify:
            continue
        
        # 构建推送数据
        payload = {
            'event': 'new_message',
            'meeting_id': str(meeting_id),
            'message': message,
            'target_agents': agents_to_notify,
            'timestamp': message.get('created_at', '')
        }
        
        # 发送 webhook
        try:
            response = requests.post(
                instance.webhook_url,
                json=payload,
                headers={'Content-Type': 'application/json'},
                timeout=5
            )
            
            if response.status_code == 200:
                logger.info(f"✅ Webhook 推送成功：{instance.instance_id} -> {agents_to_notify}")
            else:
                logger.warning(f"⚠️ Webhook 推送失败：{instance.instance_id}, status={response.status_code}")
        except Exception as e:
            logger.error(f"❌ Webhook 推送异常：{instance.instance_id}, error={e}")


def register_instance(instance_id: str, instance_name: str, agent_ids: List[str], webhook_url: str) -> Instance:
    """
    注册或更新实例
    
    Args:
        instance_id: 实例 ID
        instance_name: 实例名称
        agent_ids: Agent ID 列表
        webhook_url: Webhook URL
    
    Returns:
        Instance: 实例对象
    """
    instance, created = Instance.objects.update_or_create(
        instance_id=instance_id,
        defaults={
            'instance_name': instance_name,
            'agent_ids': agent_ids,
            'webhook_url': webhook_url,
            'webhook_enabled': True,
            'is_active': True
        }
    )
    
    if created:
        logger.info(f"✅ 新实例注册：{instance_id} ({instance_name})")
    else:
        logger.info(f"🔄 实例更新：{instance_id}")
    
    return instance


def join_meeting(instance_id: str, meeting_id: str, agent_ids: List[str]):
    """
    实例加入会议
    
    Args:
        instance_id: 实例 ID
        meeting_id: 会议 ID
        agent_ids: 参与的 Agent ID 列表
    """
    try:
        instance = Instance.objects.get(instance_id=instance_id)
        
        MeetingInstanceMap.objects.update_or_create(
            meeting_id=meeting_id,
            instance=instance,
            defaults={'agent_ids': agent_ids, 'left_at': None}
        )
        
        logger.info(f"✅ 实例 {instance_id} 加入会议 {meeting_id}, Agents: {agent_ids}")
    except Instance.DoesNotExist:
        logger.error(f"❌ 实例不存在：{instance_id}")
        raise


def leave_meeting(instance_id: str, meeting_id: str):
    """
    实例离开会议
    
    Args:
        instance_id: 实例 ID
        meeting_id: 会议 ID
    """
    try:
        instance = Instance.objects.get(instance_id=instance_id)
        mapping = MeetingInstanceMap.objects.get(meeting_id=meeting_id, instance=instance)
        mapping.left_at = timezone.now()
        mapping.save()
        
        logger.info(f"✅ 实例 {instance_id} 离开会议 {meeting_id}")
    except Exception as e:
        logger.warning(f"⚠️ 离开会议失败：{e}")


# 导入 timezone
from django.utils import timezone