Dovodi_Backend/apps/article/views.py

from rest_framework import generics, status
from rest_framework.response import Response
from drf_yasg import openapi
from drf_yasg.utils import swagger_auto_schema
from apps.library.pagination import NoPagination
from rest_framework.permissions import IsAuthenticated


from apps.article.models import *
from apps.article.serializers import *


class ArticleCategoryListAPIView(generics.ListAPIView):
    serializer_class = ArticleCategoryListSerializer
    
    @swagger_auto_schema(
        operation_description="Get a list of all active article categories",
        responses={
            200: openapi.Response(
                description="List of article categories",
                schema=ArticleCategoryListSerializer(many=True)
            )
        }
    )
    def get(self, request, *args, **kwargs):
        return super().get(request, *args, **kwargs)
    
    def get_queryset(self):
        return ArticleCategory.objects.filter(status=True).order_by('order')


class PinnedArticleCollectionListView(generics.ListAPIView):
    serializer_class = PinnedArticleCollectionSerializer
    permission_classes = (IsAuthenticated,)
    pagination_class = NoPagination


    def get_queryset(self):
        return PinnedArticleCollection.objects.filter(
            status=True,
            display_position=ArticleCollection.DisplayPosition.PINNED
        ).order_by('-order', '-id')

    def list(self, request, *args, **kwargs):
        response = super().list(request, *args, **kwargs)
        categories_count = ArticleCategory.objects.filter(status=True).count()
        from apps.bookmark.models import Bookmark
        bookmarks_count = Bookmark.objects.filter(
            service=Bookmark.ServiceChoices.ARTICLE,
        ).count()
        
        info = {
            "categories_count": categories_count,
            "bookmarks_count": bookmarks_count,
        }

        data = {
            "count": response.data.get("count"),
            "next": response.data.get("next"),
            "previous": response.data.get("previous"),
            "info": info,
            "results": response.data.get("results")
        }
        return Response(data, status=status.HTTP_200_OK)

class MiddleArticleCollectionListView(generics.ListAPIView):
    serializer_class = MiddleArticleCollectionSerializer
    permission_classes = (IsAuthenticated,)
    pagination_class = NoPagination
    
    def get_queryset(self):
        return ArticleCollection.objects.filter(
            status=True,
            display_position=ArticleCollection.DisplayPosition.MIDDLE
        ).order_by('order')
    


class ArticleListAPIView(generics.ListAPIView):
    serializer_class = ArticleListSerializer
    permission_classes = (IsAuthenticated,)
    
    
    @swagger_auto_schema(
        operation_description="Get a list of articles with optional filtering and sorting",
        manual_parameters=[
            openapi.Parameter(
                name='category',
                in_=openapi.IN_QUERY,
                description='Filter articles by category slug(s). Can be a single slug or comma-separated list of slugs',
                type=openapi.TYPE_STRING,
                required=False
            ),
            openapi.Parameter(
                name='collection',
                in_=openapi.IN_QUERY,
                description='Filter articles by collection slug',
                type=openapi.TYPE_STRING,
                required=False
            ),
            openapi.Parameter(
                name='is_bookmark',
                in_=openapi.IN_QUERY,
                description='Filter articles that are bookmarked by the user (true/false)',
                type=openapi.TYPE_BOOLEAN,
                required=False
            ),
            openapi.Parameter(
                name='search',
                in_=openapi.IN_QUERY,
                description='Search articles by title',
                type=openapi.TYPE_STRING,
                required=False
            ),
            openapi.Parameter(
                name='sort',
                in_=openapi.IN_QUERY,
                description='Sort articles by field. Options: created_at, -created_at, view_count, -view_count, title, -title',
                type=openapi.TYPE_STRING,
                required=False
            )
        ],
        responses={
            200: openapi.Response(
                description="List of articles",
                schema=ArticleListSerializer(many=True)
            )
        }
    )
    def get(self, request, *args, **kwargs):
        return super().get(request, *args, **kwargs)
    
    def get_queryset(self):
        queryset = Article.objects.filter(status=True)

        # Search by title if search parameter is provided
        search_query = self.request.query_params.get('search', None)
        if search_query:
            queryset = queryset.filter(title__icontains=search_query)

        # Filter by category if provided
        category = self.request.query_params.get('category', None)
        if category:
            # Support both single slug and comma-separated list of slugs
            category_slugs = [slug.strip() for slug in category.split(',')]
            queryset = queryset.filter(categories__slug__in=category_slugs).distinct()

        # Filter by collection if provided
        collection_slug = self.request.query_params.get('collection', None)
        if collection_slug:
            # Get all articles that are in the collection with the given slug
            queryset = queryset.filter(
                collections__slug=collection_slug
            )


        # Filter by bookmarks if provided
        is_bookmark = self.request.query_params.get('is_bookmark', '').lower()
        if is_bookmark == 'true':
            # Import Bookmark model here to avoid circular imports
            from apps.bookmark.models import Bookmark

            # Get all bookmarked article IDs for the current user
            bookmarked_ids = Bookmark.objects.filter(
                user=self.request.user,
                service=Bookmark.ServiceChoices.ARTICLE,
                status=True
            ).values_list('content_id', flat=True)

            # Filter articles by these IDs
            queryset = queryset.filter(id__in=bookmarked_ids)

        # Sort by parameter
        sort = self.request.query_params.get('sort', '-created_at')
        # Allowed sort fields
        allowed_sorts = ['created_at', '-created_at', 'view_count', '-view_count', 'title', '-title']
        if sort in allowed_sorts:
            queryset = queryset.order_by(sort)
        else:
            queryset = queryset.order_by('-created_at')

        return queryset


class ArticleDetailAPIView(generics.RetrieveAPIView):
    serializer_class = ArticleDetailSerializer
    permission_classes = (IsAuthenticated,)
    lookup_field = 'slug'
    
    def get_queryset(self):
        return Article.objects.filter(status=True)
    
    def retrieve(self, request, *args, **kwargs):
        instance = self.get_object()
        instance.increment_view_count()
        serializer = self.get_serializer(instance)
        return Response(serializer.data)