from django.shortcuts import render
import json
import uuid
import logging
from django.db import transaction
from django.shortcuts import get_object_or_404
from django.conf import settings
from django.utils import timezone
from rest_framework import viewsets, status
from rest_framework.decorators import action
from rest_framework.response import Response
from django.db.models import Q
import os

from .models import OperatorAccount, PlatformAccount, Video
from .serializers import (
    OperatorAccountSerializer, PlatformAccountSerializer, VideoSerializer,
    MultiPlatformAccountSerializer
)
from .pagination import CustomPagination

logger = logging.getLogger(__name__)

class OperatorAccountViewSet(viewsets.ModelViewSet):
    """运营账号管理视图集"""
    queryset = OperatorAccount.objects.all()
    serializer_class = OperatorAccountSerializer
    pagination_class = CustomPagination

    def list(self, request, *args, **kwargs):
        """获取运营账号列表"""
        queryset = self.filter_queryset(self.get_queryset())
        page = self.paginate_queryset(queryset)
        
        if page is not None:
            serializer = self.get_serializer(page, many=True)
            # 使用自定义分页器的响应
            return self.get_paginated_response(serializer.data)
        
        serializer = self.get_serializer(queryset, many=True)
        return Response({
            "code": 200,
            "message": "获取运营账号列表成功",
            "data": serializer.data
        })
    
    def retrieve(self, request, *args, **kwargs):
        """获取运营账号详情"""
        instance = self.get_object()
        serializer = self.get_serializer(instance)
        return Response({
            "code": 200,
            "message": "获取运营账号详情成功",
            "data": serializer.data
        })
    
    def update(self, request, *args, **kwargs):
        """更新运营账号信息"""
        partial = kwargs.pop('partial', False)
        instance = self.get_object()
        serializer = self.get_serializer(instance, data=request.data, partial=partial)
        serializer.is_valid(raise_exception=True)
        self.perform_update(serializer)
        
        return Response({
            "code": 200,
            "message": "更新运营账号信息成功",
            "data": serializer.data
        })
    
    def partial_update(self, request, *args, **kwargs):
        """部分更新运营账号信息"""
        kwargs['partial'] = True
        return self.update(request, *args, **kwargs)
    
    def create(self, request, *args, **kwargs):
        """创建运营账号"""
        serializer = self.get_serializer(data=request.data)
        serializer.is_valid(raise_exception=True)
        self.perform_create(serializer)
        
        return Response({
            "code": 200,
            "message": "运营账号创建成功",
            "data": serializer.data
        }, status=status.HTTP_201_CREATED)
    
    def destroy(self, request, *args, **kwargs):
        """删除运营账号"""
        operator = self.get_object()
        operator.is_active = False  # 软删除
        operator.save()
        
        return Response({
            "code": 200,
            "message": "运营账号已停用",
            "data": None
        })


class PlatformAccountViewSet(viewsets.ModelViewSet):
    """平台账号管理视图集"""
    queryset = PlatformAccount.objects.all()
    serializer_class = PlatformAccountSerializer
    pagination_class = CustomPagination
    
    def list(self, request, *args, **kwargs):
        """获取平台账号列表"""
        queryset = self.filter_queryset(self.get_queryset())
        page = self.paginate_queryset(queryset)
        
        if page is not None:
            serializer = self.get_serializer(page, many=True)
            # 处理数据结构
            response_data = serializer.data
            restructured_data = []
            for account_data in response_data:
                # 提取平台信息并放入platforms字段
                platform_info = {
                    "platform_name": account_data.pop("platform_name"),
                    "account_url": account_data.pop("account_url"),
                    "account_id": account_data.pop("account_id"),
                    "account_name": account_data.pop("account_name")
                }
                # 添加platforms字段作为数组
                account_data["platforms"] = [platform_info]
                # 保留用户传入的name字段，如果没有则使用platform_name
                if not account_data.get("name"):
                    account_data["name"] = platform_info["platform_name"]
                restructured_data.append(account_data)
            
            # 使用自定义分页器的响应，但替换数据
            return self.get_paginated_response(restructured_data)
        
        serializer = self.get_serializer(queryset, many=True)
        # 处理数据结构
        response_data = serializer.data
        restructured_data = []
        for account_data in response_data:
            # 提取平台信息并放入platforms字段
            platform_info = {
                "platform_name": account_data.pop("platform_name"),
                "account_url": account_data.pop("account_url"),
                "account_id": account_data.pop("account_id"),
                "account_name": account_data.pop("account_name")
            }
            # 添加platforms字段作为数组
            account_data["platforms"] = [platform_info]
            # 保留用户传入的name字段，如果没有则使用platform_name
            if not account_data.get("name"):
                account_data["name"] = platform_info["platform_name"]
            restructured_data.append(account_data)
            
        return Response({
            "code": 200,
            "message": "获取平台账号列表成功",
            "data": restructured_data
        })
    
    def retrieve(self, request, *args, **kwargs):
        """获取平台账号详情"""
        instance = self.get_object()
        serializer = self.get_serializer(instance)
        # 处理数据结构
        account_data = serializer.data
        # 提取平台信息并放入platforms字段
        platform_info = {
            "platform_name": account_data.pop("platform_name"),
            "account_url": account_data.pop("account_url"),
            "account_id": account_data.pop("account_id"),
            "account_name": account_data.pop("account_name")
        }
        # 添加platforms字段
        account_data["platforms"] = [platform_info]
        # 保留用户传入的name字段，如果没有则使用platform_name
        if not account_data.get("name"):
            account_data["name"] = platform_info["platform_name"]
        
        return Response({
            "code": 200,
            "message": "获取平台账号详情成功",
            "data": account_data
        })
    
    def update(self, request, *args, **kwargs):
        """更新平台账号信息"""
        partial = kwargs.pop('partial', False)
        instance = self.get_object()
        
        # 单独处理platforms字段，多平台信息需要特殊处理
        data = request.data.copy()
        platforms_data = None
        
        if 'platforms' in data and isinstance(data['platforms'], list):
            platforms_data = data.pop('platforms')
            
            # 如果有platforms数据，先将第一个平台的信息移至顶层，保证基本平台信息能正常更新
            if platforms_data and len(platforms_data) > 0:
                first_platform = platforms_data[0]
                if 'platform_name' in first_platform:
                    data['platform_name'] = first_platform['platform_name']
                if 'account_url' in first_platform:
                    data['account_url'] = first_platform['account_url']
                if 'account_id' in first_platform:
                    data['account_id'] = first_platform['account_id']
                if 'account_name' in first_platform:
                    data['account_name'] = first_platform['account_name']
        
        serializer = self.get_serializer(instance, data=data, partial=partial)
        serializer.is_valid(raise_exception=True)
        self.perform_update(serializer)
        
        # 处理多平台信息
        # 这里我们需要实现新的逻辑来处理额外的平台
        # 注意：这需要修改模型结构或添加关联模型来支持多平台
        # 由于当前模型结构限制，我们暂时只能在此记录其他平台数据
        # 用于未来扩展，目前会在日志中记录这些信息
        if platforms_data and len(platforms_data) > 1:
            logger = logging.getLogger(__name__)
            logger.info(f"接收到多平台数据，但当前版本仅支持一个平台。额外平台数据: {platforms_data[1:]}")
            
            # 这里应该添加创建关联平台记录的代码
            # 例如:
            # for platform_data in platforms_data[1:]:
            #     RelatedPlatform.objects.create(
            #         primary_account=instance,
            #         platform_name=platform_data.get('platform_name', ''),
            #         account_id=platform_data.get('account_id', ''),
            #         account_name=platform_data.get('account_name', ''),
            #         account_url=platform_data.get('account_url', '')
            #     )
        
        # 处理数据结构
        account_data = serializer.data
        # 提取平台信息并放入platforms字段
        platform_info = {
            "platform_name": account_data.pop("platform_name"),
            "account_url": account_data.pop("account_url"),
            "account_id": account_data.pop("account_id"),
            "account_name": account_data.pop("account_name")
        }
        # 添加platforms字段
        # 如果有platforms_data，使用原始请求中的数据，否则使用当前的单平台数据
        if platforms_data:
            account_data["platforms"] = platforms_data
        else:
            account_data["platforms"] = [platform_info]
        
        # 保留用户传入的name字段，如果没有则使用platform_name
        if not account_data.get("name"):
            account_data["name"] = platform_info["platform_name"]
        
        return Response({
            "code": 200,
            "message": "更新平台账号信息成功",
            "data": account_data
        })
    
    def partial_update(self, request, *args, **kwargs):
        """部分更新平台账号信息"""
        kwargs['partial'] = True
        return self.update(request, *args, **kwargs)
    
    def create(self, request, *args, **kwargs):
        """创建平台账号"""
        # 传统单平台账号创建流程
        print(f"{request.data}")
        with transaction.atomic():
            # 处理operator字段，可能是字符串类型的ID
            data = request.data.copy()
            if 'operator' in data and isinstance(data['operator'], str):
                try:
                    # 尝试通过ID查找运营账号
                    operator_id = data['operator']
                    try:
                        # 先尝试通过整数ID查找
                        operator_id_int = int(operator_id)
                        operator = OperatorAccount.objects.get(id=operator_id_int)
                    except (ValueError, OperatorAccount.DoesNotExist):
                        # 如果无法转换为整数或找不到对应账号，尝试通过用户名或真实姓名查找
                        operator = OperatorAccount.objects.filter(
                            Q(username=operator_id) | Q(real_name=operator_id)
                        ).first()
                        
                        if not operator:
                            return Response({
                                "code": 404,
                                "message": f"未找到运营账号: {operator_id}，请提供有效的ID、用户名或真实姓名",
                                "data": None
                            }, status=status.HTTP_404_NOT_FOUND)
                    
                    # 更新请求数据中的operator字段为找到的operator的ID
                    data['operator'] = operator.id
                        
                except Exception as e:
                    return Response({
                        "code": 400,
                        "message": f"处理运营账号ID时出错: {str(e)}",
                        "data": None
                    }, status=status.HTTP_400_BAD_REQUEST)
            
            # 创建平台账号
            serializer = self.get_serializer(data=data)
            serializer.is_valid(raise_exception=True)
            
            # 创建平台账号
            self.perform_create(serializer)
            
            # 处理响应数据
            account_data = serializer.data
            # 提取平台信息并放入platforms字段
            platform_info = {
                "platform_name": account_data.pop("platform_name"),
                "account_url": account_data.pop("account_url"),
                "account_id": account_data.pop("account_id"),
                "account_name": account_data.pop("account_name")
            }
            # 添加platforms字段
            account_data["platforms"] = [platform_info]
            # 保留用户传入的name字段，如果没有则使用platform_name
            if not account_data.get("name"):
                account_data["name"] = platform_info["platform_name"]
            
            return Response({
                "code": 200,
                "message": "平台账号创建成功",
                "data": account_data
            }, status=status.HTTP_201_CREATED)
    
    def destroy(self, request, *args, **kwargs):
        """删除平台账号"""
        platform_account = self.get_object()
        self.perform_destroy(platform_account)
        
        return Response({
            "code": 200,
            "message": "平台账号已删除",
            "data": None
        })
    
    @action(detail=True, methods=['post'])
    def update_followers(self, request, pk=None):
        """更新平台账号粉丝数"""
        platform_account = self.get_object()
        followers_count = request.data.get('followers_count')
        
        if not followers_count:
            return Response({
                "code": 400,
                "message": "粉丝数不能为空",
                "data": None
            }, status=status.HTTP_400_BAD_REQUEST)
        
        # 更新粉丝数
        platform_account.followers_count = followers_count
        platform_account.save()
        
        # 准备响应数据，与其他方法保持一致
        platform_data = self.get_serializer(platform_account).data
        # 提取平台信息并放入platforms字段
        platform_info = {
            "platform_name": platform_data.pop("platform_name"),
            "account_url": platform_data.pop("account_url"),
            "account_id": platform_data.pop("account_id"),
            "account_name": platform_data.pop("account_name")
        }
        # 添加platforms字段
        platform_data["platforms"] = [platform_info]
        # 保留用户传入的name字段，如果没有则使用platform_name
        if not platform_data.get("name"):
            platform_data["name"] = platform_info["platform_name"]
        
        return Response({
            "code": 200,
            "message": "粉丝数更新成功",
            "data": platform_data
        })

    @action(detail=True, methods=['post'])
    def update_profile(self, request, pk=None):
        """更新平台账号的头像、标签和最后发布时间"""
        platform_account = self.get_object()
        
        # 获取更新的资料数据
        profile_data = {}
        
        # 处理标签
        if 'tags' in request.data:
            # 处理tags，支持字符串或数组格式
            tags = request.data['tags']
            if isinstance(tags, list):
                profile_data['tags'] = ','.join(tags)
            else:
                profile_data['tags'] = tags
            
        # 处理头像
        if 'profile_image' in request.data:
            profile_data['profile_image'] = request.data['profile_image']
            
        # 处理最后发布时间
        if 'last_posting' in request.data:
            try:
                # 尝试解析时间字符串
                from dateutil import parser
                last_posting = parser.parse(request.data['last_posting'])
                profile_data['last_posting'] = last_posting
            except Exception as e:
                return Response({
                    "code": 400,
                    "message": f"最后发布时间格式错误: {str(e)}",
                    "data": None
                }, status=status.HTTP_400_BAD_REQUEST)
                
        # 处理名称
        if 'name' in request.data:
            profile_data['name'] = request.data['name']
        
        if not profile_data:
            return Response({
                "code": 400,
                "message": "没有提供任何需更新的资料数据",
                "data": None
            }, status=status.HTTP_400_BAD_REQUEST)
        
        # 更新平台账号资料
        for field, value in profile_data.items():
            setattr(platform_account, field, value)
        platform_account.save()
        
        # 准备响应数据，与其他方法保持一致
        platform_data = self.get_serializer(platform_account).data
        # 提取平台信息并放入platforms字段
        platform_info = {
            "platform_name": platform_data.pop("platform_name"),
            "account_url": platform_data.pop("account_url"),
            "account_id": platform_data.pop("account_id"),
            "account_name": platform_data.pop("account_name")
        }
        # 添加platforms字段
        platform_data["platforms"] = [platform_info]
        # 保留用户传入的name字段，如果没有则使用platform_name
        if not platform_data.get("name"):
            platform_data["name"] = platform_info["platform_name"]
        
        return Response({
            "code": 200,
            "message": "平台账号资料更新成功",
            "data": platform_data
        })


class VideoViewSet(viewsets.ModelViewSet):
    """视频管理视图集"""
    queryset = Video.objects.all()
    serializer_class = VideoSerializer
    pagination_class = CustomPagination
    
    def list(self, request, *args, **kwargs):
        """获取视频列表"""
        queryset = self.filter_queryset(self.get_queryset())
        page = self.paginate_queryset(queryset)
        
        if page is not None:
            serializer = self.get_serializer(page, many=True)
            # 使用自定义分页器的响应
            return self.get_paginated_response(serializer.data)
        
        serializer = self.get_serializer(queryset, many=True)
        return Response({
            "code": 200,
            "message": "获取视频列表成功",
            "data": serializer.data
        })
    
    def retrieve(self, request, *args, **kwargs):
        """获取视频详情"""
        instance = self.get_object()
        serializer = self.get_serializer(instance)
        return Response({
            "code": 200,
            "message": "获取视频详情成功",
            "data": serializer.data
        })
    
    def update(self, request, *args, **kwargs):
        """更新视频信息"""
        partial = kwargs.pop('partial', False)
        instance = self.get_object()
        serializer = self.get_serializer(instance, data=request.data, partial=partial)
        serializer.is_valid(raise_exception=True)
        self.perform_update(serializer)
        
        return Response({
            "code": 200,
            "message": "更新视频信息成功",
            "data": serializer.data
        })
    
    def partial_update(self, request, *args, **kwargs):
        """部分更新视频信息"""
        kwargs['partial'] = True
        return self.update(request, *args, **kwargs)
    
    def create(self, request, *args, **kwargs):
        """创建视频"""
        with transaction.atomic():
            # 处理platform_account字段，可能是字符串类型的ID
            data = request.data.copy()
            if 'platform_account' in data and isinstance(data['platform_account'], str):
                try:
                    # 尝试通过ID查找平台账号
                    platform_id = data['platform_account']
                    try:
                        # 先尝试通过整数ID查找
                        platform_id_int = int(platform_id)
                        platform = PlatformAccount.objects.get(id=platform_id_int)
                    except (ValueError, PlatformAccount.DoesNotExist):
                        # 如果无法转换为整数或找不到对应账号，尝试通过账号名称或账号ID查找
                        platform = PlatformAccount.objects.filter(
                            Q(account_name=platform_id) | Q(account_id=platform_id)
                        ).first()
                        
                        if not platform:
                            return Response({
                                "code": 404,
                                "message": f"未找到平台账号: {platform_id}，请提供有效的ID、账号名称或账号ID",
                                "data": None
                            }, status=status.HTTP_404_NOT_FOUND)
                    
                    # 更新请求数据中的platform_account字段为找到的platform的ID
                    data['platform_account'] = platform.id
                        
                except Exception as e:
                    return Response({
                        "code": 400,
                        "message": f"处理平台账号ID时出错: {str(e)}",
                        "data": None
                    }, status=status.HTTP_400_BAD_REQUEST)
            
            # 创建视频
            serializer = self.get_serializer(data=data)
            serializer.is_valid(raise_exception=True)
            
            # 创建视频
            self.perform_create(serializer)
            
            return Response({
                "code": 200,
                "message": "视频创建成功",
                "data": serializer.data
            }, status=status.HTTP_201_CREATED)
    
    def destroy(self, request, *args, **kwargs):
        """删除视频记录"""
        video = self.get_object()
        self.perform_destroy(video)
        
        return Response({
            "code": 200,
            "message": "视频记录已删除",
            "data": None
        })
    
    @action(detail=True, methods=['post'])
    def update_stats(self, request, pk=None):
        """更新视频统计数据"""
        video = self.get_object()
        
        # 获取更新的统计数据
        stats = {}
        for field in ['views_count', 'likes_count', 'comments_count', 'shares_count']:
            if field in request.data:
                stats[field] = request.data[field]
        
        if not stats:
            return Response({
                "code": 400,
                "message": "没有提供任何统计数据",
                "data": None
            }, status=status.HTTP_400_BAD_REQUEST)
        
        # 更新视频统计数据
        for field, value in stats.items():
            setattr(video, field, value)
        video.save()
        
        return Response({
            "code": 200,
            "message": "视频统计数据更新成功",
            "data": {
                "id": video.id,
                "title": video.title,
                "views_count": video.views_count,
                "likes_count": video.likes_count,
                "comments_count": video.comments_count,
                "shares_count": video.shares_count
            }
        })
    
    @action(detail=True, methods=['post'])
    def publish(self, request, pk=None):
        """发布视频并更新状态"""
        video = self.get_object()
        
        # 检查视频状态
        if video.status not in ['draft', 'scheduled']:
            return Response({
                "code": 400,
                "message": f"当前视频状态为 {video.get_status_display()}，无法发布",
                "data": None
            }, status=status.HTTP_400_BAD_REQUEST)
        
        # 获取视频URL
        video_url = request.data.get('video_url')
        if not video_url:
            return Response({
                "code": 400,
                "message": "未提供视频URL",
                "data": None
            }, status=status.HTTP_400_BAD_REQUEST)
        
        # 更新视频状态和URL
        video.video_url = video_url
        video.status = 'published'
        video.publish_time = timezone.now()
        video.save()
        
        return Response({
            "code": 200,
            "message": "视频已成功发布",
            "data": {
                "id": video.id,
                "title": video.title,
                "status": video.status,
                "video_url": video.video_url,
                "publish_time": video.publish_time
            }
        })

    @action(detail=False, methods=['post'])
    def upload_video(self, request):
        """上传视频文件并创建视频记录"""
        try:
            # 获取上传的视频文件
            video_file = request.FILES.get('video_file')
            if not video_file:
                return Response({
                    "code": 400,
                    "message": "未提供视频文件",
                    "data": None
                }, status=status.HTTP_400_BAD_REQUEST)
            
            # 获取平台账号ID
            platform_account_id = request.data.get('platform_account')
            if not platform_account_id:
                return Response({
                    "code": 400,
                    "message": "未提供平台账号ID",
                    "data": None
                }, status=status.HTTP_400_BAD_REQUEST)
                
            try:
                platform_account = PlatformAccount.objects.get(id=platform_account_id)
            except PlatformAccount.DoesNotExist:
                return Response({
                    "code": 404,
                    "message": f"未找到ID为{platform_account_id}的平台账号",
                    "data": None
                }, status=status.HTTP_404_NOT_FOUND)
            
            # 创建保存视频的目录
            import os
            from django.conf import settings
            
            # 确保文件保存目录存在
            media_root = getattr(settings, 'MEDIA_ROOT', os.path.join(settings.BASE_DIR, 'media'))
            videos_dir = os.path.join(media_root, 'videos')
            account_dir = os.path.join(videos_dir, f"{platform_account.platform_name}_{platform_account.account_name}")
            
            if not os.path.exists(videos_dir):
                os.makedirs(videos_dir)
            if not os.path.exists(account_dir):
                os.makedirs(account_dir)
            
            # 生成唯一的文件名
            import time
            timestamp = int(time.time())
            file_name = f"{timestamp}_{video_file.name}"
            file_path = os.path.join(account_dir, file_name)
            
            # 保存视频文件
            with open(file_path, 'wb+') as destination:
                for chunk in video_file.chunks():
                    destination.write(chunk)
            
            # 创建视频记录
            video_data = {
                'platform_account': platform_account,
                'title': request.data.get('title', os.path.splitext(video_file.name)[0]),
                'description': request.data.get('description', ''),
                'local_path': file_path,
                'status': 'draft',
                'tags': request.data.get('tags', '')
            }
            
            # 创建视频记录
            video = Video.objects.create(**video_data)
            
            return Response({
                "code": 200,
                "message": "视频上传成功",
                "data": {
                    "id": video.id,
                    "title": video.title,
                    "status": video.get_status_display(),
                }
            }, status=status.HTTP_201_CREATED)
            
        except Exception as e:
            logger.error(f"视频上传失败: {str(e)}")
            return Response({
                "code": 500,
                "message": f"视频上传失败: {str(e)}",
                "data": None
            }, status=status.HTTP_500_INTERNAL_SERVER_ERROR)
    
    @action(detail=True, methods=['post'])
    def manual_publish(self, request, pk=None):
        """手动发布视频"""
        video = self.get_object()
        
        # 检查视频状态是否允许发布
        if video.status not in ['draft', 'scheduled']:
            return Response({
                "code": 400,
                "message": f"当前视频状态为 {video.get_status_display()}，无法发布",
                "data": None
            }, status=status.HTTP_400_BAD_REQUEST)
        
        # 检查视频文件是否存在
        if video.local_path and not os.path.exists(video.local_path):
            return Response({
                "code": 400,
                "message": "视频文件不存在，无法发布",
                "data": None
            }, status=status.HTTP_400_BAD_REQUEST)
            
        try:
            # 获取视频URL，如果没有提供，则创建一个模拟的URL
            video_url = request.data.get('video_url')
            
            if not video_url:
                # 创建模拟的视频URL和ID
                platform_account = video.platform_account
                platform_name = platform_account.platform_name
                video_url = f"https://example.com/{platform_name}/{video.id}"
            
            # 更新视频状态
            video.status = 'published'
            video.publish_time = timezone.now()
            video.video_url = video_url
            video.video_id = f"VID_{video.id}"
            video.save()
            
            logger.info(f"视频 {video.id} 已手动发布")
            
            return Response({
                "code": 200,
                "message": "视频发布成功",
                "data": {
                    "id": video.id,
                    "title": video.title,
                    "status": "published",
                    "video_url": video_url,
                    "publish_time": video.publish_time.strftime("%Y-%m-%d %H:%M:%S")
                }
            })
                
        except Exception as e:
            logger.error(f"手动发布视频失败: {str(e)}")
            return Response({
                "code": 500,
                "message": f"发布失败: {str(e)}",
                "data": None
            }, status=status.HTTP_500_INTERNAL_SERVER_ERROR)