src/main/java/com/pt/service/UserService.java

package com.pt.service;

import com.pt.entity.User;
import com.pt.repository.UserRepository;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.util.List;

@Service
public class UserService {

    @Autowired
    private UserRepository userRepository;

    public UserService(UserRepository userRepository) {
        this.userRepository = userRepository;
    }

    public User findByUsername(String username) {
        return userRepository.findByUsername(username);
    }

    public User findByEmail(String email) {
        return userRepository.findByEmail(email);
    }

    public User findByUsernameAndPassword(String username, String password) {
        return userRepository.findByUsernameAndPassword(username, password);
    }

    public User findByEmailAndPassword(String email, String password) {
        return userRepository.findByEmailAndPassword(email, password);
    }

    public User save(User user) {
        return userRepository.save(user);
    }

    public User findById(String uid) {
        return userRepository.findById(uid).orElse(null);
    }

    public void deleteById(String uid) {
        userRepository.deleteById(uid);
    }

    public List<User> listAll() {
        return userRepository.findAll();
    }
}