import requests
import logging
import json
from django.conf import settings
from asgiref.sync import async_to_sync
from channels.layers import get_channel_layer

logger = logging.getLogger('brands')

class OfferStatusService:
    """提供获取达人谈判状态的服务"""
    
    @staticmethod
    def fetch_status(creator_id, product_id):
        """
        获取达人对产品的谈判状态
        :param creator_id: 达人ID
        :param product_id: 产品ID
        :return: 状态字符串
        """
        try:
            url = "http://81.69.223.133:58099/api/operation/negotiations/offer_status/"
            
            payload = {
                'creator_id': str(creator_id),
                'product_id': str(product_id)
            }
            
            response = requests.post(url, data=payload)
            
            if response.status_code == 200:
                data = response.json()
                if data['code'] == 200:
                    return data['data']['status']
                else:
                    logger.error(f"获取谈判状态失败: {data['message']}")
                    return None
            else:
                logger.error(f"请求谈判状态接口失败: {response.status_code}")
                return None
        
        except Exception as e:
            logger.error(f"获取谈判状态时发生错误: {str(e)}")
            return None
    
    @staticmethod
    def update_creator_status(campaign_id, creator_id, status):
        """
        更新达人的状态
        :param campaign_id: 活动ID
        :param creator_id: 达人ID
        :param status: 新状态
        :return: 是否更新成功
        """
        try:
            from apps.daren_detail.models import CreatorCampaign
            
            # 更新数据库中的状态
            creator_campaign = CreatorCampaign.objects.get(
                campaign_id=campaign_id,
                creator_id=creator_id
            )
            
            # 如果状态没有变化，则不进行更新
            if creator_campaign.status == status:
                return False
            
            creator_campaign.status = status
            creator_campaign.save()
            logger.info(f"已更新数据库中的状态: 活动 {campaign_id}, 达人 {creator_id}, 状态 {status}")
            return True
            
        except CreatorCampaign.DoesNotExist:
            logger.error(f"找不到关联记录: 活动 {campaign_id}, 达人 {creator_id}")
            return False
        except Exception as e:
            logger.error(f"更新达人状态时发生错误: {str(e)}")
            return False
    
    @staticmethod
    def get_campaign_creator_data(campaign_id):
        """
        获取活动关联的所有达人信息
        :param campaign_id: 活动ID
        :return: 达人信息列表
        """
        try:
            from apps.daren_detail.models import CreatorCampaign, CreatorProfile
            
            # 查询与活动关联的所有达人关联记录
            creator_campaigns = CreatorCampaign.objects.filter(
                campaign_id=campaign_id
            ).select_related('creator')
            
            creator_list = []
            for cc in creator_campaigns:
                creator = cc.creator
                
                # 格式化粉丝数和观看量
                followers_formatted = f"{int(creator.followers / 1000)}k" if creator.followers else "0"
                avg_views_formatted = f"{int(creator.avg_video_views / 1000)}k" if creator.avg_video_views else "0"
                
                # 构建响应数据
                creator_data = {
                    "id": str(creator.id),
                    "name": creator.name,
                    "avatar": creator.avatar_url,
                    "category": creator.category,
                    "followers": followers_formatted,
                    "views": avg_views_formatted,
                    "gmv": f"${creator.gmv}k" if creator.gmv else "$0",
                    "pricing": f"${creator.pricing_min}" if creator.pricing_min else "$0",
                    "status": cc.status
                }
                creator_list.append(creator_data)
            
            return creator_list
            
        except Exception as e:
            logger.error(f"获取活动达人数据时发生错误: {str(e)}")
            return []
    
    @staticmethod
    def send_status_update(campaign_id, creator_id, status):
        """
        通过WebSocket发送状态更新
        :param campaign_id: 活动ID
        :param creator_id: 达人ID
        :param status: 状态
        """
        try:
            # 先更新数据库中的状态
            updated = OfferStatusService.update_creator_status(campaign_id, creator_id, status)
            
            # 如果状态没有变化，则不发送更新
            if not updated:
                return
            
            # 获取最新的所有达人数据
            creator_list = OfferStatusService.get_campaign_creator_data(campaign_id)
            
            channel_layer = get_channel_layer()
            
            # 构建消息数据 - 使用标准的API响应格式
            message = {
                'code': 200,
                'message': '状态已更新',
                'data': creator_list
            }
            
            # 发送到活动特定的群组
            async_to_sync(channel_layer.group_send)(
                f'campaign_{campaign_id}',
                {
                    'type': 'send_update',
                    'message': json.dumps(message)
                }
            )
            
            logger.info(f"已发送状态更新: 活动 {campaign_id}, 达人 {creator_id}, 状态 {status}")
            
        except Exception as e:
            logger.error(f"发送WebSocket更新失败: {str(e)}")