(feat): User service init

services/user.py

@@ -0,0 +1,34 @@
+from werkzeug.security import generate_password_hash, check_password_hash
+from models.user import User, db
+
+class UserService:
+    def __init__(self):
+        self.db = db
+
+    def create_user(self, username, password):
+        # Check if the user exists
+        existing_user = User.query.filter_by(username=username).first()
+        if existing_user:
+            raise ValueError("User already exists")
+        
+        # Hash the password before storing
+        hash_password = generate_password_hash(password)
+
+        # Create a new user
+        new_user = User(username=username, password=hash_password)
+        self.db.session.add(new_user)
+        self.db.session.commit()
+
+        return new_user
+
+    def verify_user(self, username, password):
+        # Fetch the user by username
+        user = User.query.filter_by(username=username).first()
+        if not user:
+            raise ValueError("Invalid username or password")
+        
+        # Verify the hashed password
+        if not check_password_hash(user.password, password):
+            raise ValueError("Invalid username or password")
+        
+        return user