source: src/main/java/com/example/moviezone/service/Impl/CustomerServiceImpl.java

package com.example.moviezone.service.Impl;

import com.example.moviezone.model.Customer;
import com.example.moviezone.repository.CustomerRepository;
import com.example.moviezone.service.CustomerService;
import org.springframework.stereotype.Service;

import java.util.List;
import java.util.Optional;

@Service
public class CustomerServiceImpl implements CustomerService {
    private final CustomerRepository customerRepository;

    public CustomerServiceImpl(CustomerRepository customerRepository) {
        this.customerRepository = customerRepository;
    }

    @Override
    public List<Customer> findAllCustomers() {
        return customerRepository.findAll();
    }

    @Override
    public Optional<Customer> getCustomerById(int id) {
        return customerRepository.findById(id);
    }

    @Override
    public Customer findByUsername(String username) {
        return customerRepository.getByUsername(username);
    }
}