chore: Add GeoJSON endpoint to retrieve combined GeoJSON data from static files

backend/server/worldtravel/urls.py

@@ -2,7 +2,7 @@
 
 from django.urls import include, path
 from rest_framework.routers import DefaultRouter
-from .views import CountryViewSet, RegionViewSet, VisitedRegionViewSet, regions_by_country, visits_by_country
+from .views import CountryViewSet, RegionViewSet, VisitedRegionViewSet, regions_by_country, visits_by_country, GeoJSONView
 
 router = DefaultRouter()
 router.register(r'countries', CountryViewSet, basename='countries')
@@ -13,4 +13,5 @@ urlpatterns = [
     path('', include(router.urls)),
     path('<str:country_code>/regions/', regions_by_country, name='regions-by-country'),
     path('<str:country_code>/visits/', visits_by_country, name='visits-by-country'),
+    path('geojson/', GeoJSONView.as_view({'get': 'list'}), name='geojson'),
 ]

backend/server/worldtravel/views.py

@@ -6,6 +6,10 @@ from rest_framework.permissions import IsAuthenticated
 from django.shortcuts import get_object_or_404
 from rest_framework.response import Response
 from rest_framework.decorators import api_view, permission_classes
+import os
+import json
+from django.conf import settings
+from django.contrib.staticfiles import finders
 
 @api_view(['GET'])
 @permission_classes([IsAuthenticated])
@@ -49,4 +53,38 @@ class VisitedRegionViewSet(viewsets.ModelViewSet):
         serializer.is_valid(raise_exception=True)
         self.perform_create(serializer)
         headers = self.get_success_headers(serializer.data)
-        return Response(serializer.data, status=status.HTTP_201_CREATED, headers=headers)
+        return Response(serializer.data, status=status.HTTP_201_CREATED, headers=headers)
+
+class GeoJSONView(viewsets.ViewSet):
+    """
+    Combine all GeoJSON data from .json files in static/data into a single GeoJSON object.
+    """
+    def list(self, request):
+        combined_geojson = {
+            "type": "FeatureCollection",
+            "features": []
+        }
+        
+        # Use Django's static file finder to locate the 'data' directory
+        data_dir = finders.find('data')
+        
+        if not data_dir or not os.path.isdir(data_dir):
+            return Response({"error": "Data directory does not exist."}, status=404)
+
+        for filename in os.listdir(data_dir):
+            if filename.endswith('.json'):
+                file_path = os.path.join(data_dir, filename)
+                try:
+                    with open(file_path, 'r') as f:
+                        json_data = json.load(f)
+                        # Check if the JSON data is GeoJSON
+                        if isinstance(json_data, dict) and "type" in json_data:
+                            if json_data["type"] == "FeatureCollection":
+                                combined_geojson["features"].extend(json_data.get("features", []))
+                            elif json_data["type"] == "Feature":
+                                combined_geojson["features"].append(json_data)
+                            # You can add more conditions here for other GeoJSON types if needed
+                except (IOError, json.JSONDecodeError) as e:
+                    return Response({"error": f"Error reading file {filename}: {str(e)}"}, status=500)
+
+        return Response(combined_geojson)