from django.http import JsonResponse, HttpResponse
from django.shortcuts import render, redirect
from datetime import timedelta
from django.utils import timezone
from rest_framework.parsers import JSONParser
from django.views.decorators.csrf import csrf_exempt

from posts.models import Notice
from posts.forms import NoticeForm
from django.contrib.auth.decorators import login_required
from django.contrib.admin.views.decorators import staff_member_required
from posts.serializers import NoticeSerializer
# Create your views here.


#Titel und die Texte aller Meldungen, deren Veröffentlichungsdatum vor und der Endedatum nach dem aktuellen Datum liegt.
def home(request, value=""):
    now = timezone.now()
    notices = Notice.objects.all()
    display_notices = list()
    for notice in notices:
        if notice.pub_start < now and notice.pub_end > now:
            display_notices.append(notice)
    context = {
        "title": "Beboop",
        "notices": display_notices
    }
    return render(request, 'index.html', context)

@login_required
def new(request):
    if request.method == "POST":
        form = NoticeForm(request.POST)
        if form.is_valid():
            newNotice = Notice(notice_title=form.cleaned_data['title'],
                               notice_text=form.cleaned_data['text'],
                               pub_start=form.cleaned_data['start'],
                               pub_end=form.cleaned_data['end'])
            newNotice.save()
            return redirect('index')
    context = {'form': NoticeForm()}
    return render(request, 'edit.html', context)

@staff_member_required
def delete(request, value):
    notice = Notice.objects.get(id = value)
    notice.delete()
    return redirect('index')

@csrf_exempt
def notice_list(request):
    if request.method == "GET":
        notices = Notice.objects.all()
        serializer = NoticeSerializer(notices, many=True)
        return JsonResponse(serializer.data, safe=False)
    elif request.method == "POST":
        data = JSONParser().parse(request)
        serializer = NoticeSerializer(data=data)
        if serializer.is_valid():
            serializer.save()
            return JsonResponse(serializer.data, status=201)
        return JsonResponse(serializer.errors, status=400)
    return HttpResponse(status=405)

@csrf_exempt
def notice_detail(request, id):
    try:
        notice = Notice.objects.get(id=id)
    except:
        return HttpResponse(status=404)

    if request.method == 'GET':
        serializer = NoticeSerializer(notice)
        return JsonResponse(serializer.data)

    elif request.method == 'PUT':
        data = JSONParser().parse(request)
        serializer = NoticeSerializer(notice, data=data)
        if serializer.is_valid():
            serializer.save()
            return JsonResponse(serializer.data)
        return JsonResponse(serializer.errors, status=400)

    elif request.method == 'DELETE':
        notice.delete()
        return HttpResponse(status=204)

    return HttpResponse(status=405)