import datetime

from django.shortcuts import render

from rest_framework.decorators import api_view, permission_classes

from django.db.models import Avg, Count, Min, Sum

from rest_framework.permissions import AllowAny, IsAdminUser, IsAuthenticated



from campaign.models import Comment, Donation, Payment, Reply,Post

from campaign.serializers import getAllPostSerializer, getPostSerializer,PostSerializer

from rest_framework.response import Response

import os





# user post a campaign

@api_view(['POST'])

@permission_classes([IsAuthenticated])

def uploadPost(request):

    if request.method == 'POST':

        temp = request.data.copy()

        temp['post_owner'] =request.user.id

        temp['expiry_date'] = datetime.datetime.strptime(temp['expiry_date'], "%Y-%m-%d").date()

        serializer = PostSerializer(data=temp)

        if serializer.is_valid():

            serializer.save()

            return Response({'respose':'succesfull'})

        else:

            return Response(serializer.errors)



#user get all his open post       

@api_view(['GET'])

@permission_classes([IsAuthenticated])

def getOpenPost(request):

    if request.method == 'GET':

        post = Post.objects.filter(post_owner=request.user.id,post_status='open')

        openPostserializer = getAllPostSerializer(post,many=True)



        data = list(openPostserializer.data)

        



        for i in range(len(data)):

            

            temp = data[i]

            

            donation_count = Comment.objects.filter(post__id=temp['id']).filter(donation__isnull=False).count()

            raised = Comment.objects.filter(post__id=temp['id']).filter(donation__isnull=False).aggregate(Sum('donation__amount'))['donation__amount__sum']

            paid_amount = Payment.objects.filter(post__id=temp['id']).aggregate(Sum('paid_amount'))['paid_amount__sum']

            temp['paid_amount'] =paid_amount

            temp['funds']= {

                'donations': donation_count,

                'raised' : raised,

                'target' :temp['target_amount']

            }

            del temp['target_amount']

            del temp['comment']

        

        return Response(data)





#user get all his closed post       

@api_view(['GET'])

@permission_classes([IsAuthenticated])

def getClosedPost(request):

    if request.method == 'GET':

        post = Post.objects.filter(post_owner=request.user.id,post_status='closed')

        openPostserializer = getAllPostSerializer(post,many=True)



        data = list(openPostserializer.data)

        



        for i in range(len(data)):

            

            temp = data[i]

            

            donation_count = Comment.objects.filter(post__id=temp['id']).filter(donation__isnull=False).count()

            raised = Comment.objects.filter(post__id=temp['id']).filter(donation__isnull=False).aggregate(Sum('donation__amount'))['donation__amount__sum']

            paid_amount = Payment.objects.filter(post__id=temp['id']).aggregate(Sum('paid_amount'))['paid_amount__sum']

            temp['paid_amount'] =paid_amount

            temp['funds']= {

                'donations': donation_count,

                'raised' : raised,

                'target' :temp['target_amount']

            }

            del temp['target_amount']

            del temp['comment']

        

        return Response(data)



#user get all his open post       

@api_view(['GET'])

@permission_classes([IsAuthenticated])

def getPendingPost(request):

    if request.method == 'GET':

        post = Post.objects.filter(post_owner=request.user.id,post_status='pending')

        openPostserializer = getAllPostSerializer(post,many=True)



        data = list(openPostserializer.data)

        



        for i in range(len(data)):

            

            temp = data[i]

            

            donation_count = Comment.objects.filter(post__id=temp['id']).filter(donation__isnull=False).count()

            raised = Comment.objects.filter(post__id=temp['id']).filter(donation__isnull=False).aggregate(Sum('donation__amount'))['donation__amount__sum']

            paid_amount = Payment.objects.filter(post__id=temp['id']).aggregate(Sum('paid_amount'))['paid_amount__sum']

            temp['paid_amount'] =paid_amount

            temp['funds']= {

                'donations': donation_count,

                'raised' : raised,

                'target' :temp['target_amount']

            }

            del temp['target_amount']

            del temp['comment']

        return Response(data)



#user edit post       

@api_view(['POST'])

@permission_classes([IsAuthenticated])

def editPost(request,id):

    if request.method== 'POST': 

        Post.objects.filter(id=id).update(

            title= request.data.get('title'),

            description= request.data.get('description'),

            expiry_date= request.data.get('expiry_date'),

            target_amount= request.data.get('target_amount'),

            post_type= request.data.get('post_type'),

            category= request.data.get('category'),

            post_status = "pending"

        )

        post = Post.objects.get(id=id)

        if len(request.FILES) != 0:

            if len(post.banner) > 0 and os.path.exists(post.banner.path):

                os.remove(post.banner.path)

            post.banner = request.FILES['banner']

            post.save()

        return Response(True)