Build Lake Eufaula recommendation vertical slice

apps/api/fishing/views.py

@@ -1,11 +1,29 @@
+from datetime import timedelta
 from django.http import JsonResponse
-from rest_framework import permissions, viewsets
+from django.utils import timezone
+from rest_framework import permissions, status, viewsets
+from rest_framework.decorators import api_view, permission_classes
+from rest_framework.response import Response
 from .models import Recommendation, Species, Trip, WaterBody
+from .recommendations import build_bass_plan
 from .serializers import RecommendationSerializer, SpeciesSerializer, TripSerializer, WaterBodySerializer
 
 def health(_request):
     return JsonResponse({"status": "ok", "service": "fishiq-api"})
 
+@api_view(["GET", "POST"])
+@permission_classes([permissions.AllowAny])
+def demo_plan(request):
+    starts_at = timezone.now() + timedelta(days=3)
+    supplied_start = request.data.get("starts_at") if request.method == "POST" else request.query_params.get("starts_at")
+    if supplied_start:
+        try:
+            starts_at = timezone.datetime.fromisoformat(supplied_start.replace("Z", "+00:00"))
+            if timezone.is_naive(starts_at): starts_at = timezone.make_aware(starts_at)
+        except ValueError:
+            return Response({"starts_at": ["Use an ISO-8601 date and time."]}, status=status.HTTP_400_BAD_REQUEST)
+    return Response({"trip": {"water_body": "Lake Eufaula", "region": "Alabama / Georgia", "target_species": "Largemouth bass", "starts_at": starts_at.isoformat(), "duration_hours": 5}, "plan": build_bass_plan(starts_at)})
+
 class ReadOnlyCatalogViewSet(viewsets.ReadOnlyModelViewSet):
     permission_classes = [permissions.AllowAny]
 
@@ -27,4 +45,3 @@ class RecommendationViewSet(viewsets.ReadOnlyModelViewSet):
     serializer_class = RecommendationSerializer
     permission_classes = [permissions.IsAuthenticated]
     def get_queryset(self): return Recommendation.objects.filter(trip__owner=self.request.user)
-