feat: card CRUD 중 Create, Read 구현

src/main/java/org/prgrms/nabimarketbe/domain/card/api/CardController.java

@@ -0,0 +1,34 @@
+package org.prgrms.nabimarketbe.domain.card.api;
+
+import lombok.RequiredArgsConstructor;
+import org.prgrms.nabimarketbe.domain.card.dto.request.CardCreateRequestDTO;
+import org.prgrms.nabimarketbe.domain.card.dto.response.CardCreateResponseDTO;
+import org.prgrms.nabimarketbe.domain.card.dto.response.CardSingleReadResponseDTO;
+import org.prgrms.nabimarketbe.domain.card.service.CardService;
+import org.prgrms.nabimarketbe.global.ResponseFactory;
+import org.prgrms.nabimarketbe.global.model.SingleResult;
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.bind.annotation.*;
+
+@RestController
+@RequestMapping("/api/v1/cards")
+@RequiredArgsConstructor
+public class CardController {
+    private final CardService cardService;
+
+    @PostMapping
+    public ResponseEntity<SingleResult<CardCreateResponseDTO>> save(
+            @RequestBody CardCreateRequestDTO cardCreateRequestDTO
+    ) {
+        CardCreateResponseDTO cardCreateResponseDTO = cardService.save(cardCreateRequestDTO);
+
+        return ResponseEntity.ok(ResponseFactory.getSingleResult(cardCreateResponseDTO));
+    }
+
+    @GetMapping("/{cardId}")
+    public ResponseEntity<SingleResult<CardSingleReadResponseDTO>> singleRead(@PathVariable Long cardId) {
+        CardSingleReadResponseDTO cardSingleReadResponseDTO = cardService.singleRead(cardId);
+
+        return ResponseEntity.ok(ResponseFactory.getSingleResult(cardSingleReadResponseDTO));
+    }
+}

src/main/java/org/prgrms/nabimarketbe/domain/card/service/CardService.java

@@ -0,0 +1,126 @@
+package org.prgrms.nabimarketbe.domain.card.service;
+
+import lombok.RequiredArgsConstructor;
+import org.prgrms.nabimarketbe.domain.card.dto.request.CardCreateRequestDTO;
+import org.prgrms.nabimarketbe.domain.card.dto.response.CardCreateResponseDTO;
+import org.prgrms.nabimarketbe.domain.card.dto.response.CardSingleReadResponseDTO;
+import org.prgrms.nabimarketbe.domain.card.entity.Card;
+import org.prgrms.nabimarketbe.domain.card.repository.CardRepository;
+import org.prgrms.nabimarketbe.domain.cardimage.dto.request.CardImageCreateRequestDTO;
+import org.prgrms.nabimarketbe.domain.cardimage.dto.response.CardImageCreateResponseDTO;
+import org.prgrms.nabimarketbe.domain.cardimage.dto.response.CardImageSingleReadResponseDTO;
+import org.prgrms.nabimarketbe.domain.cardimage.entity.CardImage;
+import org.prgrms.nabimarketbe.domain.cardimage.repository.CardImageRepository;
+import org.prgrms.nabimarketbe.domain.category.entity.Category;
+import org.prgrms.nabimarketbe.domain.category.repository.CategoryRepository;
+import org.prgrms.nabimarketbe.domain.item.entity.Item;
+import org.prgrms.nabimarketbe.domain.item.repository.ItemRepository;
+import org.springframework.stereotype.Service;
+import org.springframework.transaction.annotation.Transactional;
+
+import java.util.ArrayList;
+import java.util.Comparator;
+import java.util.List;
+
+@Service
+@RequiredArgsConstructor
+@Transactional
+public class CardService {
+    private final CardRepository cardRepository;
+    private final ItemRepository itemRepository;
+    private final CategoryRepository categoryRepository;
+    private final CardImageRepository cardImageRepository;
+
+    public CardCreateResponseDTO save(CardCreateRequestDTO cardCreateRequestDTO) {  // TODO: 받은 image 버킷에 업로드
+        Category category = categoryRepository.findCategoryByCategoryName(cardCreateRequestDTO.category())
+                .orElseThrow();
+
+        Item item = Item.builder()
+                .itemName(cardCreateRequestDTO.name())
+                .priceRange(cardCreateRequestDTO.priceRange())
+                .category(category)
+                .build();
+
+        Card card = Card.builder()
+                .cardTitle(cardCreateRequestDTO.title())
+                .thumbNailImage(cardCreateRequestDTO.thumbNailImage())
+                .content(cardCreateRequestDTO.content())
+                .tradeArea(cardCreateRequestDTO.tradeArea())
+                .poke(cardCreateRequestDTO.pokeAvailable())
+                .tradeType(cardCreateRequestDTO.tradeType())
+                .item(item)
+                .build();
+
+        List<CardImage> cardImages = new ArrayList<>(cardCreateRequestDTO.images().stream()
+                .sorted(Comparator.comparingInt(CardImageCreateRequestDTO::_id))
+                .map(cardImageCreateRequestDTO -> CardImage.builder()
+                        .imageUrl(cardImageCreateRequestDTO.binary())
+                        .card(card)
+                        .build())
+                .toList());
+        cardImages.add(0, CardImage.builder()
+                .imageUrl(cardCreateRequestDTO.thumbNailImage())
+                .card(card)
+                .build());
+
+        Item savedItem = itemRepository.save(item);
+        Card savedCard =  cardRepository.save(card);
+        List<CardImage> savedCardImages = cardImageRepository.saveAll(cardImages);    // TODO: bulk insert 로 전환
+
+        // image 순서 맞춰서 응답 내려주는 부분
+        int idx = 0;
+        List<CardImageCreateResponseDTO> cardImageCreateResponseDTOS = new ArrayList<>();
+        for (CardImage cardImage : savedCardImages) {
+            cardImageCreateResponseDTOS.add(CardImageCreateResponseDTO.of(idx++, cardImage.getImageUrl()));
+        }
+
+        return CardCreateResponseDTO.of(
+                savedCard.getCardId(),
+                savedCard.getCardTitle(),
+                savedCard.getThumbNailImage(),
+                savedItem.getItemName(),
+                savedItem.getPriceRange(),
+                savedCard.getTradeType(),
+                savedItem.getCategory().getCategoryName(),
+                savedCard.getTradeArea(),
+                savedCard.getPoke(),
+                savedCard.getContent(),
+                savedCard.getViewCount(),
+                savedCard.getDibCount(),
+                savedCard.getCreatedAt(),
+                savedCard.getModifiedAt(),
+                cardImageCreateResponseDTOS
+        );
+    }
+
+    public CardSingleReadResponseDTO singleRead(Long cardId) {  // TODO: User 완성되면 User에 대한 정보도 추가해서 내려주기
+        Card card = cardRepository.findById(cardId)
+                .orElseThrow();
+
+        Item item = card.getItem();
+
+        // image 순서 맞춰서 응답 내려주는 부분
+        int idx = 0;
+        List<CardImage> cardImages = cardImageRepository.findAllByCard(card);
+        List<CardImageSingleReadResponseDTO> cardImageSingleReadResponseDTOS = new ArrayList<>();
+        for (CardImage cardImage : cardImages) {
+            cardImageSingleReadResponseDTOS.add(CardImageSingleReadResponseDTO.of(idx++, cardImage.getImageUrl()));
+        }
+
+        return CardSingleReadResponseDTO.of(
+                card.getCardId(),
+                card.getCardTitle(),
+                card.getContent(),
+                card.getTradeArea(),
+                card.getPoke(),
+                card.getTradeType(),
+                card.getStatus(),
+                card.getViewCount(),
+                card.getDibCount(),
+                item.getItemName(),
+                item.getCategory().getCategoryName(),
+                item.getPriceRange(),
+                cardImageSingleReadResponseDTOS
+        );
+    }
+}