package eu.ztsh.wymiana.service;

import eu.ztsh.wymiana.data.repository.UserRepository;
import eu.ztsh.wymiana.exception.UserAlreadyExistsException;
import eu.ztsh.wymiana.model.User;
import eu.ztsh.wymiana.util.UserMapper;
import eu.ztsh.wymiana.validation.InstanceValidator;
import eu.ztsh.wymiana.web.model.UserCreateRequest;
import lombok.RequiredArgsConstructor;
import org.hibernate.validator.constraints.pl.PESEL;
import org.springframework.stereotype.Service;
import org.springframework.validation.annotation.Validated;

import java.util.Optional;

@Validated
@RequiredArgsConstructor
@Service
public class UserService {

    private final UserRepository userRepository;
    private final InstanceValidator validator;

    public User create(UserCreateRequest request) {
        validator.validate(request);
        if (userRepository.findById(request.pesel()).isPresent()) {
            throw new UserAlreadyExistsException(request);
        }
        return UserMapper.entityToPojo(userRepository.save(UserMapper.requestToEntity(request)));
    }

    public Optional<User> get(@PESEL String pesel) {
        return userRepository.findById(pesel).map(UserMapper::entityToPojo);
    }

    public User update(User user) {
        return UserMapper.entityToPojo(userRepository.save(UserMapper.pojoToEntity(user)));
    }

}