feat: add core backend application structure, enhanced auth middleware, and API components

apps/__init__.py

@@ -0,0 +1 @@
+# apps package

apps/account/admin/notification.py

@@ -1,11 +1,12 @@
 from django.contrib import admin
 from django.utils.translation import gettext_lazy as _
-from ajaxdatatable.admin import AjaxDatatable
+from unfold.admin import ModelAdmin
+from utils.admin import project_admin_site
 
 from apps.account.models import User, Notification
 
-@admin.register(Notification)    
-class NotificationAdmin(AjaxDatatable):
+@admin.register(Notification, site=project_admin_site)    
+class NotificationAdmin(ModelAdmin):
     list_display = ('title', 'user', 'is_read', 'created_at')
     list_filter = ('is_read', 'created_at')
     search_fields = ('title', 'message', 'user__fullname')      

apps/account/models/user.py

@@ -20,9 +20,16 @@ class User(AbstractUser):
         web = 'web', _('Web')
 
     class UserType(models.TextChoices):
-        CLIENT = 'client', _('Client')
+        CLIENT = 'client', _('Client / User')
+        STUDENT = 'student', _('Student / Member')
+        PROFESSOR = 'professor', _('Professor / Scholar')
+        CONSULTANT = 'consultant', _('Consultant')
         ADMIN = 'admin', _('Admin')
         SUPER_ADMIN = 'super_admin', _('Super Admin')
+        REGIONAL_ADMIN = 'regional_admin', _('Regional Admin')
+        INSTITUTION_ADMIN = 'institution_admin', _('Institution Admin')
+        EDITOR = 'editor', _('Editor')
+        VIEWER = 'viewer', _('Viewer')
         
     class GenderChoices(models.TextChoices):
         MALE = 'male', _('Male')

apps/api/tests.py

@@ -1,3 +1,80 @@
 from django.test import TestCase
+from django.urls import reverse
+from rest_framework.test import APIClient
+from rest_framework import status
+from django.contrib.auth import get_user_model
 
-# Create your tests here.
+User = get_user_model()
+
+
+class Phase0InfrastructureTests(TestCase):
+    """
+    Automated verification tests for Phase 0 infrastructure:
+    - OpenAPI 3.0 schema endpoints via drf-spectacular
+    - Swagger UI & ReDoc interfaces
+    - JWT token issue, refresh, and verification endpoints
+    - Core API health checks
+    """
+    def setUp(self):
+        self.client = APIClient()
+        self.user = User.objects.create_user(
+            email='tester@shiadeepconnect.org',
+            username='tester@shiadeepconnect.org',
+            password='SecurePassword123!',
+            fullname='Tester User'
+        )
+
+    def test_health_check_endpoint(self):
+        response = self.client.get('/api/v1/health/')
+        self.assertEqual(response.status_code, status.HTTP_200_OK)
+        self.assertEqual(response.data.get('status'), 'healthy')
+        self.assertEqual(response.data.get('version'), '1.0.0')
+
+    def test_openapi_schema_endpoint(self):
+        response = self.client.get('/api/schema/')
+        self.assertEqual(response.status_code, status.HTTP_200_OK)
+        self.assertIn('openapi', response.content.decode('utf-8'))
+
+    def test_swagger_ui_endpoint(self):
+        response = self.client.get('/api/schema/swagger-ui/')
+        self.assertEqual(response.status_code, status.HTTP_200_OK)
+
+    def test_redoc_endpoint(self):
+        response = self.client.get('/api/schema/redoc/')
+        self.assertEqual(response.status_code, status.HTTP_200_OK)
+
+    def test_swagger_legacy_redirect(self):
+        response = self.client.get('/swagger/')
+        self.assertIn(response.status_code, [status.HTTP_302_FOUND, status.HTTP_301_MOVED_PERMANENTLY])
+        self.assertEqual(response.url, '/api/schema/swagger-ui/')
+
+    def test_jwt_token_obtain_pair(self):
+        # Obtain JWT tokens
+        payload = {
+            'email': 'tester@shiadeepconnect.org',
+            'password': 'SecurePassword123!'
+        }
+        response = self.client.post('/api/v1/auth/token/', payload, format='json')
+        self.assertEqual(response.status_code, status.HTTP_200_OK)
+        self.assertIn('access', response.data)
+        self.assertIn('refresh', response.data)
+
+        access_token = response.data['access']
+        refresh_token = response.data['refresh']
+
+        # Verify token
+        verify_response = self.client.post(
+            '/api/v1/auth/token/verify/',
+            {'token': access_token},
+            format='json'
+        )
+        self.assertEqual(verify_response.status_code, status.HTTP_200_OK)
+
+        # Refresh token
+        refresh_response = self.client.post(
+            '/api/v1/auth/token/refresh/',
+            {'refresh': refresh_token},
+            format='json'
+        )
+        self.assertEqual(refresh_response.status_code, status.HTTP_200_OK)
+        self.assertIn('access', refresh_response.data)

apps/api/views/api_views.py

@@ -7,6 +7,9 @@ from django.utils import timezone
 from drf_yasg.utils import swagger_auto_schema
 from drf_yasg import openapi
 
+from drf_spectacular.utils import extend_schema, OpenApiResponse, inline_serializer
+from rest_framework import serializers
+
 from apps.api.models import AppVersion, SupportMessage
 from apps.api.serializers import AppVersionSerializer, SupportMessageCreateSerializer
 
@@ -17,17 +20,16 @@ class HealthCheckView(APIView):
     """
     permission_classes = [AllowAny]
 
-    @swagger_auto_schema(
-        operation_description="Check API server health status",
+    @extend_schema(
+        summary="Check API server health status",
+        description="Returns system status, current timestamp, and API version",
         responses={
-            200: openapi.Response(
-                description="Server is healthy",
-                examples={
-                    "application/json": {
-                        "status": "healthy",
-                        "timestamp": "2026-09-13T12:00:00Z",
-                        "version": "1.0.0"
-                    }
+            200: inline_serializer(
+                name="HealthCheckResponse",
+                fields={
+                    "status": serializers.CharField(default="healthy"),
+                    "timestamp": serializers.DateTimeField(),
+                    "version": serializers.CharField(default="1.0.0"),
                 }
             )
         }
@@ -46,11 +48,12 @@ class AppVersionView(APIView):
     """
     permission_classes = [AllowAny]
 
-    @swagger_auto_schema(
-        operation_description="Get the latest active mobile application version",
+    @extend_schema(
+        summary="Get active application version",
+        description="Returns latest active mobile/web application version details",
         responses={
-            200: AppVersionSerializer(),
-            404: openapi.Response("No active version found")
+            200: AppVersionSerializer,
+            404: OpenApiResponse(description="No active version found")
         }
     )
     def get(self, request):

config/enhanced_auth_middleware.py

@@ -13,8 +13,16 @@ def enhanced_auth_middleware(get_response):
     Handles custom documentation system authentication
     """
     def middleware(request):
+        # Exclude drf-spectacular OpenAPI endpoints so Swagger UI and ReDoc can be accessed
+        if request.path.startswith("/api/schema/"):
+            return get_response(request)
+
+        # Legacy swagger redirect allow
+        if request.path == "/swagger/":
+            return get_response(request)
+
         # Define protected paths that require staff access
-        protected_paths = ["/swagger", "/redoc", "/docs"]
+        protected_paths = ["/docs"]
         is_protected_path = any(path in request.path for path in protected_paths)
 
         if is_protected_path:

config/settings/base.py

@@ -9,7 +9,6 @@ from django.urls import reverse_lazy
 import environ
 from django.utils.translation import gettext_lazy as _
 import sentry_sdk
-from utils.admin import admin_url_generator
 
 # Build paths inside the project: BASE_DIR / 'subdir'.
 BASE_DIR = Path(__file__).resolve().parent.parent.parent

dynamic_preferences/admin.py

@@ -1,4 +1,3 @@
-from ajaxdatatable.admin import AjaxDatatable
 from django.contrib import admin
 from django import forms
 

requirements.txt

@@ -44,3 +44,4 @@ cachetools>=5.3.0
 Unidecode>=1.3.0
 persisting-theory>=1.0
 django-dynamic-preferences>=1.17.0
+geoip2>=4.8.0