created user model, service, dao

[OlehRidchenko]

and created AuthenticationService, imlp methods register and login with custom exceptions

[mateacademy-ai-mentor]

Review Summary

Decision: APPROVE

Your implementation meets the core requirements and follows the checklist:

• User model includes email, password, salt, with email unique and sensitive fields excluded from toString().
• DAO and Service layers have correct method signatures; findByEmail returns Optional<User> and uses uniqueResultOptional() in the DAO.
• Password salting and hashing happen in UserServiceImpl.add using HashUtil, which has a private constructor as required.
• AuthenticationServiceImpl uses UserService (not DAO), combines login checks into a single condition, and Main retrieves the service via the injector and calls register/login.

Minor, non-blocking suggestions to strengthen your solution:

• In AuthenticationServiceImpl.register, return the result of userService.add(user) directly to ensure any generated fields (e.g., id) are reflected.
• Add basic input validation for null/empty email/password in login and register; throw the relevant checked exceptions with clear messages.
• In HashUtil.getHashPassword, use StandardCharsets.UTF_8 for deterministic hashing.
• Consider renaming register parameter from login to email for consistency.

Great work aligning with the requirements and demonstrating clean separation of concerns. Keep it up!

---

✨ Please rate this review in the Platform's notification center¹. I will be grateful for your feedback! ✨

Footnotes

1. Rate AI review example ↩