feat: add health_check view

backend/api/urls.py

@@ -1,11 +1,12 @@
 from django.urls import path
 
-# from users.views import login, register_user
+from .views import health_check
 from flashcards.views import create_flashcards, generate_mock_flashcard
 
 urlpatterns = [
     # path("create-user/", register_user, name="create-user"),
     # path("login/", login, name="login"),
+    path("health-check/", health_check, name="Health_check"),
     path("generate-mock-flashcard/", generate_mock_flashcard, name="generate-mock-flashcards"),
     path("create-flashcards/", create_flashcards, name="create-flashcards"),
     path("generate-mock-flashcard/", generate_mock_flashcard, name="generate-mock-flashcard"),

backend/api/views.py

@@ -1,7 +1,26 @@
-from rest_framework.decorators import api_view
-from rest_framework.response import Response
-from drf_yasg.utils import swagger_auto_schema
+from django.http import HttpResponse
+from django.db import DatabaseError
+from django.core.cache import cache
 from drf_yasg import openapi
+from drf_yasg.utils import swagger_auto_schema
+from rest_framework.decorators import api_view, permission_classes
+from rest_framework import permissions, serializers
+from rest_framework.response import Response
+
+@swagger_auto_schema(
+    method="get",
+    operation_description="Health check endpoint",
+    responses={200: "OK"},
+)
+@api_view(["GET"])
+@permission_classes([permissions.AllowAny])
+def health_check(request) -> Response:
+    try:
+        # Check cache
+        cache.set('health_check', 'ok', timeout=30)
+        if cache.get('health_check') != 'ok':
+            raise ValueError("Cache not working")
 
-# Define your expected request body as a serializer
-from rest_framework import serializers
+        return Response("OK", content_type="text/plain")
+    except (DatabaseError, ValueError) as e:
+        return Response(str(e), status=500, content_type="text/plain")