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from datetime import datetime
from fastapi import APIRouter, HTTPException
from pydantic import BaseModel
import motor.motor_asyncio
from bson.objectid import ObjectId
import bcrypt
from ..config import settings
logger = logging.getLogger(__name__)
router = APIRouter()
# MongoDB client (initialized lazily)
_mongo_client = None
_db = None
async def get_db():
"""Get MongoDB database instance."""
global _mongo_client, _db
if _db is None:
if not settings.MONGO_CONNECTION_STRING:
raise HTTPException(
status_code=500,
detail="MongoDB connection string not configured"
)
_mongo_client = motor.motor_asyncio.AsyncIOMotorClient(settings.MONGO_CONNECTION_STRING)
_db = _mongo_client["kes_db"] # Specify database name
return _db
# Pydantic models
class GoogleAuthRequest(BaseModel):
email: str
name: str
picture: str | None = None
sub: str # Google user ID
class ManualLoginRequest(BaseModel):
email: str
password: str
class AuthResponse(BaseModel):
success: bool
user_id: str | None = None
message: str
def hash_password(password: str) -> str:
"""Hash password using bcrypt."""
salt = bcrypt.gensalt(rounds=10)
return bcrypt.hashpw(password.encode(), salt).decode()
def verify_password(password: str, hashed: str) -> bool:
"""Verify password against hash."""
return bcrypt.checkpw(password.encode(), hashed.encode())
@router.post("/google", response_model=AuthResponse)
async def google_auth(request: GoogleAuthRequest):
"""
Save or update user from Google OAuth login.
- Upserts user by email
- Stores Google-provided data (name, picture, sub)
- No password stored for Google users
"""
try:
db = await get_db()
users = db["users"]
now = datetime.utcnow()
user_data = {
"email": request.email,
"name": request.name,
"auth_provider": "google",
"google_sub": request.sub,
"picture": request.picture,
"updated_at": now,
}
# Upsert: update if exists, insert if not
await users.update_one(
{"email": request.email},
{
"$set": user_data,
"$setOnInsert": {"created_at": now}
},
upsert=True
)
# Get the user to return the ID
user = await users.find_one({"email": request.email})
user_id = str(user["_id"]) if user else None
logger.info(f"✅ Google auth successful for {request.email}")
return AuthResponse(
success=True,
user_id=user_id,
message=f"User {request.email} authenticated successfully"
)
except Exception as e:
logger.error(f"❌ Google auth failed: {e}")
raise HTTPException(
status_code=500,
detail=f"Google authentication failed: {str(e)}"
)
@router.post("/login", response_model=AuthResponse)
async def manual_login(request: ManualLoginRequest):
"""
Save or update user from email/password login.
- Upserts user by email
- Hashes and stores password
- auth_provider set to 'email'
"""
try:
db = await get_db()
users = db["users"]
# Hash the password
password_hash = hash_password(request.password)
now = datetime.utcnow()
user_data = {
"email": request.email,
"name": request.email.split("@")[0], # Default name from email
"auth_provider": "email",
"password_hash": password_hash,
"updated_at": now,
}
# Upsert: update if exists, insert if not
await users.update_one(
{"email": request.email},
{
"$set": user_data,
"$setOnInsert": {"created_at": now}
},
upsert=True
)
# Get the user to return the ID
user = await users.find_one({"email": request.email})
user_id = str(user["_id"]) if user else None
logger.info(f"✅ Manual login successful for {request.email}")
return AuthResponse(
success=True,
user_id=user_id,
message=f"User {request.email} authenticated successfully"
)
except Exception as e:
logger.error(f"❌ Manual login failed: {e}")
raise HTTPException(
status_code=500,
detail=f"Login failed: {str(e)}"
)
class UpgradeSubscriptionRequest(BaseModel):
email: str
payment_id: str
class UpgradeSubscriptionResponse(BaseModel):
success: bool
message: str
subscription_status: str | None = None
@router.post("/upgrade-subscription", response_model=UpgradeSubscriptionResponse)
async def upgrade_subscription(request: UpgradeSubscriptionRequest):
"""
Upgrade user subscription to premium after successful payment.
Updates user's subscription_status from 'free' to 'paid'.
"""
try:
db = await get_db()
users = db["users"]
# Update user subscription status
result = await users.find_one_and_update(
{"email": request.email},
{
"$set": {
"subscription_status": "paid",
"payment_id": request.payment_id,
"subscription_updated_at": datetime.utcnow(),
}
},
return_document=True
)
if not result:
raise HTTPException(
status_code=404,
detail=f"User {request.email} not found"
)
logger.info(f"✅ Subscription upgraded for {request.email} (Payment ID: {request.payment_id})")
return UpgradeSubscriptionResponse(
success=True,
message=f"Subscription upgraded successfully for {request.email}",
subscription_status="paid"
)
except HTTPException:
raise
except Exception as e:
logger.error(f"❌ Subscription upgrade failed: {e}")
raise HTTPException(
status_code=500,
detail=f"Subscription upgrade failed: {str(e)}"
)
@router.get("/health")
async def auth_health():
"""Health check for auth service."""
try:
db = await get_db()
# Try to ping MongoDB
await db.command("ping")
return {"status": "ok", "database": "connected"}
except Exception as e:
logger.warning(f"⚠️ Auth health check failed: {e}")
return {"status": "error", "database": "disconnected", "error": str(e)}
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