package parkup.services;

import java.util.List;
import java.util.Objects;
import java.util.Optional;
import javax.transaction.Transactional;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import parkup.entities.RegistriranParkirac;
import parkup.repositories.RegistriranParkiracRepository;

@Service
public class RegistriranParkiracService {
    private final RegistriranParkiracRepository registriranParkiracRepository;

    @Autowired
    public RegistriranParkiracService(RegistriranParkiracRepository registriranParkiracRepository) {
        this.registriranParkiracRepository = registriranParkiracRepository;
    }

    public List<RegistriranParkirac> getRegPark() {
        return this.registriranParkiracRepository.findAll();
    }

    public void addRegPark(RegistriranParkirac regPark) {
        Optional<RegistriranParkirac> regParkOpt = this.registriranParkiracRepository.findRegistriranParkiracByEmail(regPark.getEmail());
        if (regParkOpt.isPresent()) {
            throw new IllegalStateException("Email already taken, try adding a registriranParkirac with a different valid email address");
        } else {
            System.out.println(regPark);
            this.registriranParkiracRepository.save(regPark);
        }
    }

    @Transactional
    public void updateRegPark(int regParkId, String name, String surname, String mobile, String email) {
        Optional<RegistriranParkirac> regParkOpt = Optional.ofNullable(this.registriranParkiracRepository.findByRegParkId(regParkId));
        if (regParkOpt.isPresent()) {
            RegistriranParkirac regParkNov = this.registriranParkiracRepository.findByRegParkId(regParkId);
            if (email != null && email.length() > 1 && email.contains("@") && !Objects.equals(regParkNov.getEmail(), email)) {
                Optional<RegistriranParkirac> userOpt1 = this.registriranParkiracRepository.findRegistriranParkiracByEmail(email);
                if (userOpt1.isPresent()) {
                    throw new IllegalStateException("email taken");
                }

                regParkNov.setEmail(email);
            }

            if (name != null && name.length() > 1 && !Objects.equals(regParkNov.getName(), name)) {
                regParkNov.setName(name);
            }

            if (surname != null && surname.length() > 1 && !Objects.equals(regParkNov.getSurname(), surname)) {
                regParkNov.setSurname(surname);
            }

            if (mobile != null && mobile.length() > 0 && !Objects.equals(regParkNov.getMobile(), mobile)) {
                regParkNov.setMobile(mobile);
            }
        }
    }

    public void deleteRegPark(int regParkId) {
        Optional<RegistriranParkirac> regPark = Optional.ofNullable(this.registriranParkiracRepository.findByRegParkId(regParkId));
        if (regPark.isPresent()) {
            this.registriranParkiracRepository.deleteByRegParkId(regParkId);
        } else {
            throw new IllegalStateException("RegistriranParkirac doesn't exist, therefore can't be deleted");
        }
    }

    public RegistriranParkirac findById(int regParkId) {
        Optional<RegistriranParkirac> regPark = Optional.ofNullable(this.registriranParkiracRepository.findByRegParkId(regParkId));
        return regPark.orElse(null);
    }
}