from rest_framework import status
from rest_framework.response import Response
from rest_framework.decorators import api_view
from .models import Article
from .serializers import ArticleSerializer
from django.http import HttpResponse
from django.template import loader


def main(request):
    template = loader.get_template('main.html')
    return HttpResponse(template.render())


@api_view(['POST'])
def article_post(request, format=None):
    if request.method == 'POST':
        serializer = ArticleSerializer(data=request.data)
        if serializer.is_valid():
            serializer.save()
            return Response(serializer.data, status=status.HTTP_201_CREATED)

@api_view(['GET', 'PUT', 'DELETE'])
def article_detail(request, slug, format=None):

    try:
        article = Article.objects.get(slug=slug)
    except Article.DoesNotExist:
        return Response(status=status.HTTP_404_NOT_FOUND)

    if request.method == 'GET':
        serializer = ArticleSerializer(article)
        return Response(serializer.data)

    elif request.method == 'PUT':
        serializer = ArticleSerializer(article, data=request.data)
        if serializer.is_valid():
            serializer.save()
            return Response(serializer.data)
        return Response(serializer.errors, status=status.HTTP_400_BAD_REQUEST)

    elif request.method == 'DELETE':
        article.delete()
        return Response(status=status.HTTP_204_NO_CONTENT)