1 | package parkup.services;
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2 |
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3 | import java.util.List;
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4 | import java.util.Optional;
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5 | import org.springframework.beans.factory.annotation.Autowired;
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6 | import org.springframework.stereotype.Service;
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7 | import parkup.entities.Guest;
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8 | import parkup.repositories.GuestRepository;
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9 |
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10 | @Service
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11 | public class GuestService {
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12 | private final GuestRepository guestRepository;
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13 |
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14 | @Autowired
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15 | public GuestService(GuestRepository guestRepository) {
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16 | this.guestRepository = guestRepository;
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17 | }
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18 |
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19 | public List<Guest> getGuests() {
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20 | return this.guestRepository.findAll();
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21 | }
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22 |
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23 | public Guest findById(int guestId) {
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24 | Optional<Guest> guest = Optional.ofNullable(this.guestRepository.findByGuestId(guestId));
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25 | return guest.orElse(null);
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26 | }
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27 |
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28 | public void addGuest(Guest guest) {
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29 | Optional<Guest> guestOpt = this.guestRepository.findGuestByEmail(guest.getEmail());
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30 | if (guestOpt.isPresent()) {
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31 | throw new IllegalStateException("Email already taken, try adding a guest with a different valid email address");
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32 | } else {
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33 | System.out.println(guest);
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34 | this.guestRepository.save(guest);
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35 | }
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36 | }
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37 |
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38 | public void deleteGuest(int guestId) {
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39 | Optional<Guest> guest = Optional.ofNullable(this.guestRepository.findByGuestId(guestId));
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40 | if (guest.isPresent()) {
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41 | this.guestRepository.deleteByGuestId(guestId);
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42 | } else {
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43 | throw new IllegalStateException("Guest doesn't exist, therefore can't be deleted");
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44 | }
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45 | }
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46 | }
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