google auth

Author: jettysaivarun

backend/apps/authentication/migrations/0001_initial.py

@@ -0,0 +1,40 @@
+# Generated by Django 6.1 on 2026-08-23 16:39
+
+import uuid
+
+import django.db.models.deletion
+from django.conf import settings
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+    initial = True
+
+    dependencies = [
+        migrations.swappable_dependency(settings.AUTH_USER_MODEL),
+    ]
+
+    operations = [
+        migrations.CreateModel(
+            name="UserProfile",
+            fields=[
+                (
+                    "id",
+                    models.UUIDField(
+                        default=uuid.uuid4,
+                        editable=False,
+                        primary_key=True,
+                        serialize=False,
+                    ),
+                ),
+                (
+                    "user",
+                    models.OneToOneField(
+                        on_delete=django.db.models.deletion.CASCADE,
+                        related_name="profile",
+                        to=settings.AUTH_USER_MODEL,
+                    ),
+                ),
+            ],
+        ),
+    ]

backend/apps/authentication/urls.py

@@ -5,4 +5,7 @@
 urlpatterns = [
     path("register/", views.RegisterationView.as_view(), name="register"),
     path("login/", views.LoginView.as_view(), name="login"),
+    path("<str:provider>/", views.OAuthLoginView.as_view()),
+    path("<str:provider>/callback/", views.OAuthCallbackView.as_view()),
+    # path("google/",views.GoogleLogin.as_view(),name="google_login"),
 ]

backend/apps/authentication/views.py

@@ -1,6 +1,13 @@
+from urllib.parse import urlencode
+
+import requests
+from django.conf import settings
 from django.contrib.auth.models import User
+from django.shortcuts import redirect
 from rest_framework import generics, status
+from rest_framework.permissions import AllowAny
 from rest_framework.response import Response
+from rest_framework.views import APIView
 from rest_framework_simplejwt.tokens import RefreshToken
 
 from .models import UserProfile
@@ -62,3 +69,59 @@ def create(self, request, *args, **kwags):
             },
             status=status.HTTP_200_OK,
         )
+
+
+"""  
+class GoogleLogin(SocialLoginView):
+    adapter_class = GoogleOAuth2Adapter
+    client_class = OAuth2Client
+    callback_url = "http://127.0.0.1:8000/accounts/google/login/callback/"
+"""
+
+
+class OAuthLoginView(APIView):
+    permission_classes = [AllowAny]
+
+    def get(self, request, provider):
+        if provider != "google":
+            return Response({"error": "Unsupported provider"}, status=400)
+        params = {
+            "client_id": settings.GOOGLE_CLIENT_ID,
+            "redirect_uri": settings.GOOGLE_REDIRECT_URI,
+            "response_type": "code",
+            "scope": "openid email profile",
+            "access_type": "offline",
+        }
+        google_url = "https://accounts.google.com/o/oauth2/v2/auth?" + urlencode(params)
+        return redirect(google_url)
+
+
+class OAuthCallbackView(APIView):
+    permission_classes = [AllowAny]
+
+    def get(self, request, provider):
+        if provider != "google":
+            return Response({"error": "Unsupported provider"}, status=400)
+        code = request.GET.get("code")
+        if not code:
+            return Response({"error": "Authorization code missing"}, status=400)
+        token_response = requests.post(
+            "https://oauth2.googleapis.com/token",
+            data={
+                "code": code,
+                "client_id": settings.GOOGLE_CLIENT_ID,
+                "client_secret": settings.GOOGLE_CLIENT_SECRET,
+                "redirect_uri": settings.GOOGLE_REDIRECT_URI,
+                "grant_type": "authorization_code",
+            },
+        )
+        token_data = token_response.json()
+        access_token = token_data.get("access_token")
+        if not access_token:
+            return Response({"error": "Failed to get access_token"}, status=400)
+        user_response = requests.get(
+            "https://www.googleapis.com/oauth2/v2/userinfo",
+            headers={"Authorization": f"Bearer {access_token}"},
+        )
+        user_data = user_response.json()
+        return Response(user_data)

backend/config/settings/base.py

@@ -1,6 +1,12 @@
 import os
 from pathlib import Path
 
+from dotenv import load_dotenv
+
+load_dotenv()
+GOOGLE_CLIENT_ID = os.getenv("GOOGLE_CLIENT_ID")
+GOOGLE_CLIENT_SECRET = os.getenv("GOOGLE_CLIENT_SECRET")
+GOOGLE_REDIRECT_URI = os.getenv("GOOGLE_REDIRECT_URI")
 # BASE_DIR points to the root of your backend project (/app)
 BASE_DIR = Path(__file__).resolve().parent.parent.parent
 
@@ -12,11 +18,20 @@
     "django.contrib.sessions",
     "django.contrib.messages",
     "django.contrib.staticfiles",
+    "rest_framework.authtoken",
     # Third-party apps
     "rest_framework",
     "rest_framework_simplejwt",
     # Local apps
     "apps.authentication",
+    # dj_auth_apps
+    "dj_rest_auth",
+    "dj_rest_auth.registration",
+    # allauth
+    "allauth",
+    "allauth.account",
+    "allauth.socialaccount",
+    "allauth.socialaccount.providers.google",
 ]
 
 MIDDLEWARE = [
@@ -27,6 +42,7 @@
     "django.contrib.auth.middleware.AuthenticationMiddleware",
     "django.contrib.messages.middleware.MessageMiddleware",
     "django.middleware.clickjacking.XFrameOptionsMiddleware",
+    "allauth.account.middleware.AccountMiddleware",
 ]
 
 ROOT_URLCONF = "config.urls"
@@ -90,3 +106,27 @@
 
 # Default primary key field type
 DEFAULT_AUTO_FIELD = "django.db.models.BigAutoField"
+SITE_ID = 1
+AUTHENTICATION_BACKENDS = [
+    "django.contrib.auth.backends.ModelBackend",
+    "allauth.account.auth_backends.AuthenticationBackend",
+]
+REST_FRAMEWORK = {
+    "DEFAULT_AUTHENTICATION_CLASSES": [
+        "rest_framework.authentication.TokenAuthentication",
+    ],
+}
+
+SOCIALACCOUNT_PROVIDERS = {
+    "google": {
+        "SCOPE": [
+            "profile",
+            "email",
+        ],
+        "AUTH_PARAMS": {
+            "access_type": "online",
+        },
+    },
+}
+
+LOGIN_REDIRECT_URL = "/"

backend/config/urls.py

@@ -21,6 +21,7 @@
 urlpatterns = [
     path("admin/", admin.site.urls),
     path("api/auth/", include("apps.authentication.urls")),
+    # path("accounts/", include("allauth.urls")),
     # path("catalog/", include("apps.catalog.urls")),
     # path("order/", include("apps.orders.urls")),
     # path("profile/", include("apps.profiles.urls")),

backend/pyproject.toml

@@ -13,16 +13,15 @@ dependencies = [
     "djangorestframework>=3.15.0",
     "djangorestframework-simplejwt>=5.3.1",
     "django-cors-headers>=4.4.0",
-    
     # Database
     "psycopg[binary]>=3.2.0",
-    
     # Production WSGI Server
     "gunicorn>=23.0.0",
-    
     # Utilities & OAuth Integrations
     "python-dotenv>=1.0.1",
     "requests>=2.32.0",
+    "dj-rest-auth>=7.2.0",
+    "django-allauth>=65.19.1",
 ]
 
 [tool.uv]
@@ -51,4 +50,4 @@ select = [
 [tool.pytest.ini_options]
 DJANGO_SETTINGS_MODULE = "config.settings.local"
 python_files = ["test_*.py", "*_test.py", "tests.py"]
-addopts = "--strict-markers --no-migrations"
+addopts = "--strict-markers --no-migrations"