from rest_framework import viewsets, permissions, status
from rest_framework.decorators import action
from rest_framework.response import Response
from django_filters.rest_framework import DjangoFilterBackend
from .models import DutyRoster, Meeting
from .serializers import (
    DutyRosterSerializer, 
    MeetingSerializer, 
    MeetingDetailSerializer
)
from utils.page import MyPageNumberPagination

from .serializers import IsDutyPersonOrAdmin
from datetime import date, timedelta  # 文件顶部导入


    

class DutyRosterViewSet(viewsets.ModelViewSet):
    """轮值信息视图集"""
    queryset = DutyRoster.objects.all().order_by('-start_date')
    serializer_class = DutyRosterSerializer
    filter_backends = [DjangoFilterBackend]
    filterset_fields = ['status', 'user']
    pagination_class = MyPageNumberPagination

    def get_serializer_context(self):
        """将当前用户添加到序列化器上下文中"""
        context = super().get_serializer_context()
        context.update({'request': self.request})
        return context

    def current_duty(self, request):
        """获取当前轮值信息"""
        current_duty = DutyRoster.objects.filter(
            status=DutyRoster.Status.ACTIVE
        ).first()
        
        if not current_duty:
     
            from userprofile.models import Users
            # 从周一开始创建轮值信息
            start_date = date.today() - timedelta(days=date.today().weekday())
            end_date = start_date + timedelta(days=13)
            base_user = Users.objects.filter(roles=Users.UserRole.ADMIN).first()
            if not base_user:
                return Response({"detail": "系统尚未配置管理员账号"}, status=200)
            current_duty = DutyRoster.objects.create(
                user=base_user,
                start_date=start_date,
                end_date=end_date,
                status=DutyRoster.Status.ACTIVE
            )
        
            serializer = self.get_serializer(current_duty)

            return Response(serializer.data)



            
        serializer = self.get_serializer(current_duty)
        return Response(serializer.data)

class MeetingViewSet(viewsets.ModelViewSet):
    """组会视图集"""
    queryset = Meeting.objects.all().order_by('-meeting_time')
    serializer_class = MeetingSerializer
    filter_backends = [DjangoFilterBackend]
    filterset_fields = ['duty_roster', 'published', 'meeting_type']
    pagination_class = MyPageNumberPagination

    def get_serializer_class(self):
        if self.action in ['retrieve', 'create', 'update']:
            return MeetingDetailSerializer
        return MeetingSerializer


    def publish_meeting(self, request, pk=None):
        """发布会议通知"""
        meeting = self.get_object()
        
        # 检查当前用户是否为轮值同学
        if not meeting.duty_roster.user == request.user:
            return Response({"detail": "只有当前轮值同学可以发布会议通知"}, status=200)
        
        meeting.published = True
        meeting.save()
        
        # 在此处添加实际发布通知的逻辑
        return Response({"status": "会议已发布"}, status=200)


    def get_document_url(self, request, pk=None):
        """获取OnlyOffice文档URL"""
        meeting = self.get_object()
        if not meeting.summary_doc_id:
            return Response({"detail": "文档尚未创建"}, status=200)
        
        # 实际系统中应根据配置生成OnlyOffice文档URL
        document_url = f"/onlyoffice/{meeting.summary_doc_id}"
        return Response({"document_url": document_url})

    def update(self, request, *args, **kwargs):
        return super().update(request, *args, **kwargs)

    def destroy(self, request, *args, **kwargs):
        return super().destroy(request, *args, **kwargs)