Add comprehensive Google OAuth integration for easy login/signup

Features:
- Complete Google OAuth 2.0 integration with ID token and authorization code flows
- Enhanced User model with Google OAuth fields (google_id, is_google_user, email_verified, profile_picture)
- Google OAuth service for token verification and user info extraction
- Multiple authentication endpoints:
  - GET /auth/google/oauth-url (get OAuth URL for frontend)
  - POST /auth/google/login-with-token (direct ID token login)
  - POST /auth/google/login-with-code (authorization code exchange)
- Smart user handling: creates new users or links existing accounts
- Issues own JWT tokens after Google authentication
- Database migration 004 for Google OAuth fields
- Enhanced login logic to handle Google vs password users
- Comprehensive README with Google OAuth setup instructions
- Frontend integration examples for both OAuth flows

Google OAuth automatically:
- Creates user accounts on first login
- Links existing email accounts to Google
- Extracts profile information (name, picture, locale)
- Verifies email addresses
- Issues secure JWT tokens for API access
This commit is contained in:
Automated Action 2025-06-25 05:49:54 +00:00
parent 3e90deba20
commit 99937b3fd7
6 changed files with 511 additions and 9 deletions

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@ -38,6 +38,11 @@ Create a `.env` file in the root directory with the following variables:
# Authentication
SECRET_KEY=your-secret-key-change-this-in-production
# Google OAuth Configuration
GOOGLE_CLIENT_ID=your-google-client-id
GOOGLE_CLIENT_SECRET=your-google-client-secret
GOOGLE_REDIRECT_URI=http://localhost:3000/auth/google/callback
# AWS S3 Configuration
AWS_ACCESS_KEY_ID=your-aws-access-key
AWS_SECRET_ACCESS_KEY=your-aws-secret-key
@ -76,8 +81,11 @@ The API will be available at:
## API Endpoints
### Authentication
- `POST /auth/register` - User registration
- `POST /auth/login` - User login
- `POST /auth/register` - User registration with email/password
- `POST /auth/login` - User login with email/password
- `GET /auth/google/oauth-url` - Get Google OAuth URL for frontend
- `POST /auth/google/login-with-token` - Login/signup with Google ID token
- `POST /auth/google/login-with-code` - Login/signup with Google authorization code
### Profile Management
- `GET /profile/` - Get user profile
@ -104,9 +112,59 @@ The API will be available at:
### Results
- `GET /process/results/{video_id}` - Get complete processing results
## Google OAuth Setup
### 1. Create Google OAuth Application
1. Go to [Google Cloud Console](https://console.cloud.google.com/)
2. Create a new project or select existing one
3. Enable the Google+ API
4. Go to "Credentials" → "Create Credentials" → "OAuth 2.0 Client IDs"
5. Choose "Web application"
6. Add authorized redirect URIs:
- `http://localhost:3000/auth/google/callback` (for development)
- Your production callback URL
### 2. Configure Environment Variables
Add these to your `.env` file:
```env
GOOGLE_CLIENT_ID=your-google-oauth-client-id
GOOGLE_CLIENT_SECRET=your-google-oauth-client-secret
GOOGLE_REDIRECT_URI=http://localhost:3000/auth/google/callback
```
### 3. Frontend Integration
**Option 1: Direct Token Method**
```javascript
// Use Google's JavaScript library to get ID token
const response = await fetch('/auth/google/login-with-token', {
method: 'POST',
headers: { 'Content-Type': 'application/json' },
body: JSON.stringify({ id_token: googleIdToken })
});
```
**Option 2: Authorization Code Method**
```javascript
// Redirect user to Google OAuth URL, then exchange code
const oauthUrl = await fetch('/auth/google/oauth-url').then(r => r.json());
// Redirect to oauthUrl.oauth_url
// On callback, exchange code:
const response = await fetch('/auth/google/login-with-code', {
method: 'POST',
headers: { 'Content-Type': 'application/json' },
body: JSON.stringify({
code: authorizationCode,
redirect_uri: 'http://localhost:3000/auth/google/callback'
})
});
```
## Workflow
1. **Register/Login** to get JWT token
1. **Register/Login** (Email/Password or Google OAuth) to get JWT token
2. **Upload Video** with source and target languages
3. **Transcribe** the audio from the video
4. **Translate** the transcribed text
@ -119,6 +177,9 @@ The API will be available at:
| Variable | Description | Required |
|----------|-------------|----------|
| `SECRET_KEY` | JWT secret key for authentication | Yes |
| `GOOGLE_CLIENT_ID` | Google OAuth client ID | No* |
| `GOOGLE_CLIENT_SECRET` | Google OAuth client secret | No* |
| `GOOGLE_REDIRECT_URI` | Google OAuth redirect URI | No* |
| `AWS_ACCESS_KEY_ID` | AWS access key for S3 | Yes |
| `AWS_SECRET_ACCESS_KEY` | AWS secret key for S3 | Yes |
| `AWS_REGION` | AWS region (default: us-east-1) | No |
@ -126,6 +187,8 @@ The API will be available at:
| `OPENAI_API_KEY` | OpenAI API key for Whisper and GPT-4 | Yes |
| `ELEVENLABS_API_KEY` | ElevenLabs API key for voice cloning | Yes |
*Required only if Google OAuth is enabled
## File Storage Structure
Files are stored in S3 with the following structure:

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@ -0,0 +1,81 @@
"""Add Google OAuth fields to users table
Revision ID: 004
Revises: 003
Create Date: 2024-01-01 00:00:03.000000
"""
from typing import Sequence, Union
from alembic import op
import sqlalchemy as sa
from sqlalchemy.engine.reflection import Inspector
# revision identifiers, used by Alembic.
revision: str = '004'
down_revision: Union[str, None] = '003'
branch_labels: Union[str, Sequence[str], None] = None
depends_on: Union[str, Sequence[str], None] = None
def column_exists(table_name, column_name):
"""Check if a column exists in a table"""
bind = op.get_bind()
inspector = Inspector.from_engine(bind)
columns = [c['name'] for c in inspector.get_columns(table_name)]
return column_name in columns
def upgrade() -> None:
# List of Google OAuth columns to add
google_oauth_columns = [
('google_id', sa.Column('google_id', sa.String(), nullable=True)),
('is_google_user', sa.Column('is_google_user', sa.Boolean(), nullable=True)),
('email_verified', sa.Column('email_verified', sa.Boolean(), nullable=True)),
('profile_picture', sa.Column('profile_picture', sa.String(), nullable=True))
]
# Add Google OAuth columns only if they don't exist
for column_name, column_def in google_oauth_columns:
if not column_exists('users', column_name):
op.add_column('users', column_def)
# Create index for google_id if column exists
if column_exists('users', 'google_id'):
try:
op.create_index(op.f('ix_users_google_id'), 'users', ['google_id'], unique=True)
except Exception:
# Index might already exist, ignore
pass
# Set default values for existing users
if column_exists('users', 'is_google_user'):
op.execute("UPDATE users SET is_google_user = 0 WHERE is_google_user IS NULL")
if column_exists('users', 'email_verified'):
op.execute("UPDATE users SET email_verified = 0 WHERE email_verified IS NULL")
# Make password_hash nullable for Google OAuth users
# Note: SQLite doesn't support modifying column constraints directly
# So we'll handle this in the application logic
def downgrade() -> None:
# List of columns to remove (in reverse order)
google_oauth_columns = [
'profile_picture',
'email_verified',
'is_google_user',
'google_id'
]
# Drop index first if it exists
try:
op.drop_index(op.f('ix_users_google_id'), table_name='users')
except Exception:
# Index might not exist, ignore
pass
# Remove columns only if they exist
for column_name in google_oauth_columns:
if column_exists('users', column_name):
op.drop_column('users', column_name)

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@ -1,4 +1,4 @@
from sqlalchemy import Column, Integer, String, DateTime
from sqlalchemy import Column, Integer, String, DateTime, Boolean
from datetime import datetime
from app.db.base import Base
@ -8,13 +8,20 @@ class User(Base):
id = Column(Integer, primary_key=True, index=True)
email = Column(String, unique=True, index=True, nullable=False)
password_hash = Column(String, nullable=False)
password_hash = Column(String, nullable=True) # Made nullable for Google OAuth users
first_name = Column(String, nullable=True)
last_name = Column(String, nullable=True)
phone = Column(String, nullable=True)
bio = Column(String, nullable=True)
preferred_language = Column(String, default="en")
timezone = Column(String, default="UTC")
# Google OAuth fields
google_id = Column(String, unique=True, nullable=True, index=True)
is_google_user = Column(Boolean, default=False)
email_verified = Column(Boolean, default=False)
profile_picture = Column(String, nullable=True)
created_at = Column(DateTime(timezone=True), nullable=True)
updated_at = Column(DateTime(timezone=True), nullable=True)
@ -23,4 +30,23 @@ class User(Base):
if not self.created_at:
self.created_at = datetime.utcnow()
if not self.updated_at:
self.updated_at = datetime.utcnow()
self.updated_at = datetime.utcnow()
@property
def full_name(self):
"""Get user's full name"""
if self.first_name and self.last_name:
return f"{self.first_name} {self.last_name}"
elif self.first_name:
return self.first_name
elif self.last_name:
return self.last_name
return self.email.split('@')[0] # Fallback to email username
def is_password_user(self):
"""Check if user uses password authentication"""
return self.password_hash is not None and not self.is_google_user
def can_login_with_password(self):
"""Check if user can login with password"""
return self.password_hash is not None

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@ -1,10 +1,13 @@
from fastapi import APIRouter, Depends, HTTPException, status
from sqlalchemy.orm import Session
from pydantic import BaseModel, EmailStr
from typing import Optional
from datetime import datetime
import logging
from app.db.session import get_db
from app.models.user import User
from app.utils.auth import get_password_hash, verify_password, create_access_token
from app.services.google_oauth_service import GoogleOAuthService
logger = logging.getLogger(__name__)
@ -89,7 +92,25 @@ async def register(user: UserCreate, db: Session = Depends(get_db)):
@router.post("/login", response_model=Token)
async def login(user: UserLogin, db: Session = Depends(get_db)):
db_user = db.query(User).filter(User.email == user.email).first()
if not db_user or not verify_password(user.password, db_user.password_hash):
# Check if user exists
if not db_user:
raise HTTPException(
status_code=status.HTTP_401_UNAUTHORIZED,
detail="Incorrect email or password",
headers={"WWW-Authenticate": "Bearer"},
)
# Check if user can login with password
if not db_user.can_login_with_password():
raise HTTPException(
status_code=status.HTTP_401_UNAUTHORIZED,
detail="This account uses Google sign-in. Please use Google to login.",
headers={"WWW-Authenticate": "Bearer"},
)
# Verify password
if not verify_password(user.password, db_user.password_hash):
raise HTTPException(
status_code=status.HTTP_401_UNAUTHORIZED,
detail="Incorrect email or password",
@ -97,4 +118,191 @@ async def login(user: UserLogin, db: Session = Depends(get_db)):
)
access_token = create_access_token(data={"sub": db_user.email})
return {"access_token": access_token, "token_type": "bearer"}
return {"access_token": access_token, "token_type": "bearer"}
# Google OAuth Models
class GoogleTokenLogin(BaseModel):
id_token: str
class GoogleCodeLogin(BaseModel):
code: str
redirect_uri: str
class GoogleOAuthURL(BaseModel):
oauth_url: str
class GoogleUserResponse(BaseModel):
id: int
email: str
first_name: Optional[str]
last_name: Optional[str]
full_name: str
is_google_user: bool
email_verified: bool
profile_picture: Optional[str]
created_at: str
is_new_user: bool
class Config:
orm_mode = True
# Google OAuth Endpoints
@router.get("/google/oauth-url", response_model=GoogleOAuthURL)
async def get_google_oauth_url():
"""Get Google OAuth URL for frontend redirect"""
oauth_url = GoogleOAuthService.get_google_oauth_url()
if not oauth_url:
raise HTTPException(
status_code=status.HTTP_500_INTERNAL_SERVER_ERROR,
detail="Google OAuth not configured"
)
return {"oauth_url": oauth_url}
@router.post("/google/login-with-token", response_model=Token)
async def google_login_with_token(
google_data: GoogleTokenLogin,
db: Session = Depends(get_db)
):
"""Login/Register with Google ID token"""
try:
logger.info("Google OAuth login attempt with ID token")
# Verify Google token
user_info = await GoogleOAuthService.verify_google_token(google_data.id_token)
if not user_info:
raise HTTPException(
status_code=status.HTTP_401_UNAUTHORIZED,
detail="Invalid Google token"
)
# Check if user exists by email
db_user = db.query(User).filter(User.email == user_info['email']).first()
if db_user:
# Existing user - update Google info if not already a Google user
if not db_user.is_google_user:
db_user.google_id = user_info['google_id']
db_user.is_google_user = True
db_user.email_verified = user_info['email_verified']
if user_info.get('picture'):
db_user.profile_picture = user_info['picture']
if user_info.get('first_name') and not db_user.first_name:
db_user.first_name = user_info['first_name']
if user_info.get('last_name') and not db_user.last_name:
db_user.last_name = user_info['last_name']
db_user.updated_at = datetime.utcnow()
db.commit()
db.refresh(db_user)
logger.info(f"Updated existing user with Google OAuth: {db_user.email}")
else:
# New user - create account
db_user = User(
email=user_info['email'],
google_id=user_info['google_id'],
is_google_user=True,
email_verified=user_info['email_verified'],
first_name=user_info.get('first_name'),
last_name=user_info.get('last_name'),
profile_picture=user_info.get('picture'),
preferred_language=user_info.get('locale', 'en')
)
db.add(db_user)
db.commit()
db.refresh(db_user)
logger.info(f"Created new Google user: {db_user.email}")
# Create JWT token
access_token = create_access_token(data={"sub": db_user.email})
return {"access_token": access_token, "token_type": "bearer"}
except HTTPException:
raise
except Exception as e:
logger.error(f"Google OAuth error: {str(e)}")
db.rollback()
raise HTTPException(
status_code=status.HTTP_500_INTERNAL_SERVER_ERROR,
detail="Internal server error during Google authentication"
)
@router.post("/google/login-with-code", response_model=Token)
async def google_login_with_code(
google_data: GoogleCodeLogin,
db: Session = Depends(get_db)
):
"""Login/Register with Google authorization code"""
try:
logger.info("Google OAuth login attempt with authorization code")
# Exchange code for ID token
id_token = await GoogleOAuthService.exchange_code_for_token(
google_data.code,
google_data.redirect_uri
)
if not id_token:
raise HTTPException(
status_code=status.HTTP_401_UNAUTHORIZED,
detail="Failed to exchange authorization code"
)
# Verify the ID token and process user
user_info = await GoogleOAuthService.verify_google_token(id_token)
if not user_info:
raise HTTPException(
status_code=status.HTTP_401_UNAUTHORIZED,
detail="Invalid Google token"
)
# Same logic as token login
db_user = db.query(User).filter(User.email == user_info['email']).first()
if db_user:
if not db_user.is_google_user:
db_user.google_id = user_info['google_id']
db_user.is_google_user = True
db_user.email_verified = user_info['email_verified']
if user_info.get('picture'):
db_user.profile_picture = user_info['picture']
if user_info.get('first_name') and not db_user.first_name:
db_user.first_name = user_info['first_name']
if user_info.get('last_name') and not db_user.last_name:
db_user.last_name = user_info['last_name']
db_user.updated_at = datetime.utcnow()
db.commit()
db.refresh(db_user)
else:
db_user = User(
email=user_info['email'],
google_id=user_info['google_id'],
is_google_user=True,
email_verified=user_info['email_verified'],
first_name=user_info.get('first_name'),
last_name=user_info.get('last_name'),
profile_picture=user_info.get('picture'),
preferred_language=user_info.get('locale', 'en')
)
db.add(db_user)
db.commit()
db.refresh(db_user)
access_token = create_access_token(data={"sub": db_user.email})
return {"access_token": access_token, "token_type": "bearer"}
except HTTPException:
raise
except Exception as e:
logger.error(f"Google OAuth code exchange error: {str(e)}")
db.rollback()
raise HTTPException(
status_code=status.HTTP_500_INTERNAL_SERVER_ERROR,
detail="Internal server error during Google authentication"
)

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@ -0,0 +1,121 @@
import os
import logging
from typing import Optional, Dict, Any
from google.auth.transport import requests as google_requests
from google.oauth2 import id_token
from google.auth.exceptions import GoogleAuthError
logger = logging.getLogger(__name__)
# Google OAuth configuration
GOOGLE_CLIENT_ID = os.getenv("GOOGLE_CLIENT_ID")
GOOGLE_CLIENT_SECRET = os.getenv("GOOGLE_CLIENT_SECRET")
if not GOOGLE_CLIENT_ID or not GOOGLE_CLIENT_SECRET:
logger.warning("Google OAuth credentials not configured")
class GoogleOAuthService:
@staticmethod
async def verify_google_token(token: str) -> Optional[Dict[str, Any]]:
"""
Verify Google ID token and return user information
"""
if not GOOGLE_CLIENT_ID:
logger.error("Google Client ID not configured")
return None
try:
# Verify the token
id_info = id_token.verify_oauth2_token(
token,
google_requests.Request(),
GOOGLE_CLIENT_ID
)
# Verify that the token is issued by Google
if id_info['iss'] not in ['accounts.google.com', 'https://accounts.google.com']:
logger.error("Invalid token issuer")
return None
# Extract user information
user_info = {
'google_id': id_info.get('sub'),
'email': id_info.get('email'),
'email_verified': id_info.get('email_verified', False),
'first_name': id_info.get('given_name'),
'last_name': id_info.get('family_name'),
'full_name': id_info.get('name'),
'picture': id_info.get('picture'),
'locale': id_info.get('locale', 'en')
}
logger.info(f"Successfully verified Google token for user: {user_info['email']}")
return user_info
except ValueError as e:
logger.error(f"Invalid Google token: {e}")
return None
except GoogleAuthError as e:
logger.error(f"Google auth error: {e}")
return None
except Exception as e:
logger.error(f"Unexpected error verifying Google token: {e}")
return None
@staticmethod
def get_google_oauth_url() -> Optional[str]:
"""
Generate Google OAuth URL for frontend to redirect users
"""
if not GOOGLE_CLIENT_ID:
return None
redirect_uri = os.getenv("GOOGLE_REDIRECT_URI", "http://localhost:3000/auth/google/callback")
oauth_url = (
f"https://accounts.google.com/o/oauth2/auth?"
f"client_id={GOOGLE_CLIENT_ID}&"
f"redirect_uri={redirect_uri}&"
f"scope=openid email profile&"
f"response_type=code&"
f"access_type=offline&"
f"prompt=consent"
)
return oauth_url
@staticmethod
async def exchange_code_for_token(code: str, redirect_uri: str) -> Optional[str]:
"""
Exchange authorization code for ID token
"""
if not GOOGLE_CLIENT_ID or not GOOGLE_CLIENT_SECRET:
logger.error("Google OAuth credentials not configured")
return None
try:
import requests
token_url = "https://oauth2.googleapis.com/token"
data = {
'client_id': GOOGLE_CLIENT_ID,
'client_secret': GOOGLE_CLIENT_SECRET,
'code': code,
'grant_type': 'authorization_code',
'redirect_uri': redirect_uri
}
response = requests.post(token_url, data=data)
if response.status_code == 200:
token_data = response.json()
return token_data.get('id_token')
else:
logger.error(f"Failed to exchange code for token: {response.text}")
return None
except Exception as e:
logger.error(f"Error exchanging code for token: {e}")
return None

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@ -12,4 +12,7 @@ ruff==0.1.6
requests==2.31.0
ffmpeg-python==0.2.0
python-dotenv==1.0.0
email-validator==2.1.0
email-validator==2.1.0
google-auth==2.25.2
google-auth-oauthlib==1.1.0
google-auth-httplib2==0.2.0