Initial commit: Django backend with Campaign, ContactUs, and Composition APIs

api/views.py

@@ -0,0 +1,114 @@
+from rest_framework import viewsets, status
+from rest_framework.decorators import action
+from rest_framework.response import Response
+from rest_framework.permissions import AllowAny, IsAuthenticated
+from django.db.models import Q
+from django.utils import timezone
+from .models import ContactUs, Composition, Campaign
+from .serializers import ContactUsSerializer, CompositionSerializer, CampaignSerializer
+
+
+class ContactUsViewSet(viewsets.ModelViewSet):
+    """
+    ViewSet for ContactUs model.
+    Provides CRUD operations for contact form submissions.
+    """
+    queryset = ContactUs.objects.all()
+    serializer_class = ContactUsSerializer
+    permission_classes = [AllowAny]  # Allow anyone to submit contact forms
+    
+    def get_permissions(self):
+        """
+        Override to allow GET (list, retrieve) and POST (create) for anyone.
+        """
+        if self.action in ['list', 'retrieve', 'create']:
+            return [AllowAny()]
+        return [IsAuthenticated()]
+    
+    @action(detail=False, methods=['get'])
+    def by_category(self, request):
+        """Get contacts filtered by category."""
+        category = request.query_params.get('category', None)
+        if category:
+            contacts = self.queryset.filter(category=category)
+            serializer = self.get_serializer(contacts, many=True)
+            return Response(serializer.data)
+        return Response(
+            {'error': 'Category parameter is required.'},
+            status=status.HTTP_400_BAD_REQUEST
+        )
+
+
+class CompositionViewSet(viewsets.ModelViewSet):
+    """
+    ViewSet for Composition model.
+    Provides CRUD operations for compositions.
+    """
+    queryset = Composition.objects.all()
+    serializer_class = CompositionSerializer
+    permission_classes = [AllowAny]  # Public read access
+    
+    def get_permissions(self):
+        """
+        Override to allow GET (list, retrieve) and POST (create) for anyone.
+        """
+        if self.action in ['list', 'retrieve', 'create']:
+            return [AllowAny()]
+        return [IsAuthenticated()]
+    
+    def get_serializer_context(self):
+        """Add request to serializer context for image URL generation."""
+        context = super().get_serializer_context()
+        context['request'] = self.request
+        return context
+
+
+class CampaignViewSet(viewsets.ModelViewSet):
+    """
+    ViewSet for Campaign model.
+    Provides CRUD operations for campaigns.
+    """
+    queryset = Campaign.objects.all()
+    serializer_class = CampaignSerializer
+    permission_classes = [AllowAny]  # Public read access
+    
+    def get_permissions(self):
+        """
+        Override to allow GET (list, retrieve) and POST (create) for anyone.
+        """
+        if self.action in ['list', 'retrieve', 'create', 'active', 'upcoming', 'ended']:
+            return [AllowAny()]
+        return [IsAuthenticated()]
+    
+    def get_serializer_context(self):
+        """Add request to serializer context for image URL generation."""
+        context = super().get_serializer_context()
+        context['request'] = self.request
+        return context
+    
+    @action(detail=False, methods=['get'])
+    def active(self, request):
+        """Get all currently active campaigns."""
+        now = timezone.now()
+        active_campaigns = self.queryset.filter(
+            start_time__lte=now,
+            end_time__gte=now
+        )
+        serializer = self.get_serializer(active_campaigns, many=True)
+        return Response(serializer.data)
+    
+    @action(detail=False, methods=['get'])
+    def upcoming(self, request):
+        """Get all upcoming campaigns."""
+        now = timezone.now()
+        upcoming_campaigns = self.queryset.filter(start_time__gt=now)
+        serializer = self.get_serializer(upcoming_campaigns, many=True)
+        return Response(serializer.data)
+    
+    @action(detail=False, methods=['get'])
+    def ended(self, request):
+        """Get all ended campaigns."""
+        now = timezone.now()
+        ended_campaigns = self.queryset.filter(end_time__lt=now)
+        serializer = self.get_serializer(ended_campaigns, many=True)
+        return Response(serializer.data)