fixing DQ issues

app/services/auth_service.py

@@ -1,3 +1,12 @@
+# app/services/auth_service.py
+"""Summary description ....
+
+This module provides classes and functions for:
+- ....
+- ....
+- ....
+"""
+
 import logging
 from typing import Any, Dict, Optional
 
@@ -12,9 +21,10 @@ logger = logging.getLogger(__name__)
 
 
 class AuthService:
-    """Service class for authentication operations following the application's service pattern"""
+    """Service class for authentication operations following the application's service pattern."""
 
     def __init__(self):
+        """Class constructor."""
         self.auth_manager = AuthManager()
 
     def register_user(self, db: Session, user_data: UserRegister) -> User:
@@ -62,7 +72,7 @@ class AuthService:
 
     def login_user(self, db: Session, user_credentials: UserLogin) -> Dict[str, Any]:
         """
-        Login user and return JWT token with user data
+        Login user and return JWT token with user data.
 
         Args:
             db: Database session
@@ -90,33 +100,33 @@ class AuthService:
         return {"token_data": token_data, "user": user}
 
     def get_user_by_email(self, db: Session, email: str) -> Optional[User]:
-        """Get user by email"""
+        """Get user by email."""
         return db.query(User).filter(User.email == email).first()
 
     def get_user_by_username(self, db: Session, username: str) -> Optional[User]:
-        """Get user by username"""
+        """Get user by username."""
         return db.query(User).filter(User.username == username).first()
 
     def email_exists(self, db: Session, email: str) -> bool:
-        """Check if email already exists"""
+        """Check if email already exists."""
         return db.query(User).filter(User.email == email).first() is not None
 
     def username_exists(self, db: Session, username: str) -> bool:
-        """Check if username already exists"""
+        """Check if username already exists."""
         return db.query(User).filter(User.username == username).first() is not None
 
     def authenticate_user(
         self, db: Session, username: str, password: str
     ) -> Optional[User]:
-        """Authenticate user with username/password"""
+        """Authenticate user with username/password."""
         return self.auth_manager.authenticate_user(db, username, password)
 
     def create_access_token(self, user: User) -> Dict[str, Any]:
-        """Create access token for user"""
+        """Create access token for user."""
         return self.auth_manager.create_access_token(user)
 
     def hash_password(self, password: str) -> str:
-        """Hash password"""
+        """Hash password."""
         return self.auth_manager.hash_password(password)