feat: Update endpoint login

endpoints/login.post.py

@@ -1,25 +1,45 @@
 from fastapi import APIRouter, Depends, HTTPException
-from core.auth import get_current_user_dummy
 from core.database import fake_users_db
+import uuid
 
 router = APIRouter()
 
-@router.post("/login")
-async def login_demo(
-    username: str = "demo",
-    password: str = "password"
+@router.post("/signup")
+async def signup_handler(
+    username: str,
+    email: str,
+    password: str
 ):
-    """Demo login endpoint"""
-    user = fake_users_db.get(username)
-    if not user or user["password"] != password:
-        raise HTTPException(status_code=400, detail="Invalid credentials")
+    """Create new user account"""
+    if username in fake_users_db:
+        raise HTTPException(status_code=400, detail="Username already exists")
+    
+    if not email or '@' not in email:
+        raise HTTPException(status_code=400, detail="Invalid email format")
+        
+    if len(password) < 8:
+        raise HTTPException(status_code=400, detail="Password must be at least 8 characters")
+    
+    user_id = str(uuid.uuid4())
+    fake_users_db[username] = {
+        "id": user_id,
+        "email": email,
+        "password": password,
+        "disabled": False,
+        "created_at": str(uuid.uuid1())
+    }
     
     return {
-        "message": "Login successful (demo)",
-        "user": username,
-        "token": "dummy_jwt_token_123",
-        "features": {
-            "rate_limit": 100,
-            "expires_in": 3600
+        "message": "User created successfully",
+        "user_id": user_id,
+        "username": username,
+        "next_steps": [
+            "Verify your email address",
+            "Complete your profile",
+            "Set up two-factor authentication"
+        ],
+        "metadata": {
+            "account_status": "pending_verification",
+            "created_timestamp": fake_users_db[username]["created_at"]
         }
     }