Update app.py

app.py

@@ -3,14 +3,15 @@ from fastapi.middleware.cors import CORSMiddleware
 from pydantic import BaseModel
 import os
 import hashlib
-import motor.motor_asyncio
+import certifi
+from motor.motor_asyncio import AsyncIOMotorClient
 
 app = FastAPI()
 
-# === CORS ===
+# === CORS Middleware ===
 app.add_middleware(
     CORSMiddleware,
-    allow_origins=["*"],  # Open CORS (limit for prod)
+    allow_origins=["*"],  # ⚠️ Restrict in production
     allow_credentials=True,
     allow_methods=["*"],
     allow_headers=["*"],
@@ -18,15 +19,18 @@ app.add_middleware(
 
 # === MongoDB Setup ===
 MONGO_URI = os.getenv("MONGO_URI")
-client = motor.motor_asyncio.AsyncIOMotorClient(MONGO_URI)
-db = client["cps_db"]  # database name
+if not MONGO_URI:
+    raise RuntimeError("Missing MONGO_URI environment variable")
+
+client = AsyncIOMotorClient(MONGO_URI, tls=True, tlsCAFile=certifi.where())
+db = client["cps_db"]
 users_collection = db["users"]
 
-# === Utils ===
+# === Password Hashing ===
 def hash_password(password: str) -> str:
     return hashlib.sha256(password.encode()).hexdigest()
 
-# === Models ===
+# === Pydantic Models ===
 class SignupForm(BaseModel):
     email: str
     password: str
@@ -61,4 +65,4 @@ async def login(data: LoginForm):
 
 @app.get("/")
 def root():
-    return {"message": "MongoDB FastAPI is running ✅"}
+    return {"message": "🚀 MongoDB FastAPI backend is live"}