Feat: 키워드 입력을 통해 관련 카테고리 리스트 조회 기능 구현

src/main/java/com/codiary/backend/global/apiPayload/code/status/SuccessStatus.java

@@ -21,7 +21,9 @@ public enum SuccessStatus implements BaseCode {
     // 포스트사진 관련 응답
     POSTPHOTO_OK(HttpStatus.OK, "POSTPHOTO_5000", "성공입니다."),
     // 북마크 관련 응답
-    BOOKMARK_OK(HttpStatus.OK, "BOOKMARK_7000", "성공입니다.");
+    BOOKMARK_OK(HttpStatus.OK, "BOOKMARK_6000", "성공입니다."),
+    // 카테고리 관련 응답
+    CATEGORY_OK(HttpStatus.OK, "CATEGORY_7000", "성공입니다.");
 
     private final HttpStatus httpStatus;
     private final String code;

src/main/java/com/codiary/backend/global/converter/CategoryConverter.java

@@ -0,0 +1,27 @@
+package com.codiary.backend.global.converter;
+
+import com.codiary.backend.global.domain.entity.mapping.Categories;
+import com.codiary.backend.global.web.dto.Category.CategoryResponseDTO;
+
+import java.util.List;
+import java.util.stream.Collectors;
+import java.util.stream.IntStream;
+
+public class CategoryConverter {
+
+    public static CategoryResponseDTO.CategoryPreviewDTO toCategoryPreviewDTO(Categories categories) {
+        return CategoryResponseDTO.CategoryPreviewDTO.builder()
+                .categoryId(categories.getCategoryId())
+                .categoryName(categories.getName())
+                .build();
+    }
+
+    public static CategoryResponseDTO.CategoryPreviewListDTO toCategoryPreviewListDTO(List<Categories> categoriesList) {
+        List<CategoryResponseDTO.CategoryPreviewDTO> categoryPreviewDTOList = IntStream.range(0, categoriesList.size())
+                .mapToObj(i->toCategoryPreviewDTO(categoriesList.get(i)))
+                .collect(Collectors.toList());
+        return CategoryResponseDTO.CategoryPreviewListDTO.builder()
+                .categories(categoryPreviewDTOList)
+                .build();
+    }
+}

src/main/java/com/codiary/backend/global/domain/entity/mapping/Categories.java

@@ -1,5 +1,6 @@
 package com.codiary.backend.global.domain.entity.mapping;
 
+import com.codiary.backend.global.domain.common.BaseEntity;
 import com.codiary.backend.global.domain.entity.Post;
 import com.codiary.backend.global.domain.entity.Member;
 import jakarta.persistence.*;
@@ -17,27 +18,14 @@ public class Categories {
   @Column(name = "category_id", nullable = false, columnDefinition = "bigint")
   private Long categoryId;
 
-  //@Enumerated(EnumType.STRING)
   @Column(name = "name", nullable = false, columnDefinition = "varchar(100)")
   private String name;
 
-//  @ManyToOne(fetch = FetchType.LAZY)
-//  @JoinColumn(name = "member_id")
-//  private Member member;
-
-//  @ManyToOne(fetch = FetchType.LAZY)
-//  @JoinColumn(name = "post_id")
-//  private Post post;
   @ManyToMany(mappedBy = "categoriesList")
   private List<Post> posts = new ArrayList<>();
 
   @Builder
   public Categories(String name) { this.name = name;}
-  public static Categories createCategory(Post post, String name, Member member) {
-    Categories category = new Categories(name);
-    category.getPosts().add(post);
-    post.getCategoriesList().add(category);
-    return category;
-  }
+
 
 }

src/main/java/com/codiary/backend/global/repository/CategoriesRepository.java → src/main/java/com/codiary/backend/global/repository/CategoryRepository.java

@@ -4,9 +4,12 @@
 import com.codiary.backend.global.domain.entity.mapping.Categories;
 import org.springframework.data.jpa.repository.JpaRepository;
 
+import java.util.List;
 import java.util.Optional;
 
-public interface CategoriesRepository extends JpaRepository<Categories, Long> {
+public interface CategoryRepository extends JpaRepository<Categories, Long> {
     Optional<Categories> findByName(String name);
+    List<Categories> findAllByNameContainingIgnoreCaseOrderByCategoryIdDesc(String keyword);
+    List<Categories> findAllByOrderByCategoryIdDesc();
     boolean existsByName(String name);
 }

src/main/java/com/codiary/backend/global/service/CategoryService/CategoryCommandServiceImpl.java

@@ -2,7 +2,8 @@
 
 import com.codiary.backend.global.domain.entity.Post;
 import com.codiary.backend.global.domain.entity.mapping.Categories;
-import com.codiary.backend.global.repository.CategoriesRepository;
+import com.codiary.backend.global.repository.CategoryRepository;
+import lombok.Getter;
 import lombok.RequiredArgsConstructor;
 import lombok.extern.slf4j.Slf4j;
 import org.springframework.stereotype.Service;
@@ -12,9 +13,10 @@
 @RequiredArgsConstructor
 @Transactional
 @Slf4j
+@Getter
 public class CategoryCommandServiceImpl implements CategoryCommandService{
 
-    private final CategoriesRepository categoriesRepository;
+    private final CategoryRepository categoriesRepository;
 
     @Transactional
     @Override

src/main/java/com/codiary/backend/global/service/CategoryService/CategoryQueryService.java

@@ -3,8 +3,9 @@
 import com.codiary.backend.global.domain.entity.mapping.Categories;
 
 import java.util.List;
+import java.util.Optional;
 
 public interface CategoryQueryService {
-    List<Categories> getCategories();
+    List<Categories> getCategoriesByKeyword(Optional<String> optSearch);
     boolean categoryExists(String categoryName);
 }

src/main/java/com/codiary/backend/global/service/CategoryService/CategoryQueryServiceImpl.java

@@ -1,14 +1,15 @@
 package com.codiary.backend.global.service.CategoryService;
 
 import com.codiary.backend.global.domain.entity.mapping.Categories;
-import com.codiary.backend.global.repository.CategoriesRepository;
+import com.codiary.backend.global.repository.CategoryRepository;
 import lombok.Getter;
 import lombok.RequiredArgsConstructor;
 import lombok.extern.slf4j.Slf4j;
 import org.springframework.stereotype.Service;
 import org.springframework.transaction.annotation.Transactional;
 
 import java.util.List;
+import java.util.Optional;
 
 @Service
 @RequiredArgsConstructor
@@ -17,11 +18,15 @@
 @Getter
 public class CategoryQueryServiceImpl implements CategoryQueryService{
 
-    private final CategoriesRepository categoriesRepository;
+    private final CategoryRepository categoriesRepository;
 
     @Override
-    public List<Categories> getCategories() {
-        return categoriesRepository.findAll();
+    public List<Categories> getCategoriesByKeyword(Optional<String> optSearch) {
+        if (optSearch.isPresent()) {
+            String search = optSearch.get();
+            return categoriesRepository.findAllByNameContainingIgnoreCaseOrderByCategoryIdDesc(search);
+        }
+        return categoriesRepository.findAllByOrderByCategoryIdDesc();
     }
 
     @Override

src/main/java/com/codiary/backend/global/web/controller/CategoryController.java

@@ -0,0 +1,44 @@
+package com.codiary.backend.global.web.controller;
+
+
+import com.codiary.backend.global.apiPayload.ApiResponse;
+import com.codiary.backend.global.apiPayload.code.status.SuccessStatus;
+import com.codiary.backend.global.converter.CategoryConverter;
+import com.codiary.backend.global.domain.entity.mapping.Categories;
+import com.codiary.backend.global.service.CategoryService.CategoryQueryService;
+import com.codiary.backend.global.web.dto.Category.CategoryResponseDTO;
+import io.swagger.v3.oas.annotations.Operation;
+import lombok.RequiredArgsConstructor;
+import lombok.extern.slf4j.Slf4j;
+import org.springframework.validation.annotation.Validated;
+import org.springframework.web.bind.annotation.*;
+
+import java.util.List;
+import java.util.Optional;
+
+@RestController
+@RequiredArgsConstructor
+@Validated
+@CrossOrigin
+@RequestMapping("/categories")
+@Slf4j
+public class CategoryController {
+    private final CategoryQueryService categoryQueryService;
+
+    // 키워드 입력을 통해 관련 카테고리 리스트 조회
+    @GetMapping("/list")
+    @Operation(
+            summary = "키워드 입력을 통해 관련 카테고리 리스트 조회 API", description = "키워드 입력을 통해 관련 카테고리 리스트 조회합니다. 입력한 키워드가 포함된 모든 카테고리를 리스트로 조회할 수 있습니다. Param으로 키워드를 입력하세요."
+            //, security = @SecurityRequirement(name = "accessToken")
+    )
+    public ApiResponse<CategoryResponseDTO.CategoryPreviewListDTO> findCategoriesByKeyword(
+            @RequestParam Optional<String> search
+    ){
+        List<Categories> categories = categoryQueryService.getCategoriesByKeyword(search);
+        return ApiResponse.onSuccess(
+                SuccessStatus.CATEGORY_OK,
+                CategoryConverter.toCategoryPreviewListDTO(categories)
+        );
+    }
+
+}

src/main/java/com/codiary/backend/global/web/dto/Category/CategoryResponseDTO.java

@@ -1,4 +1,28 @@
 package com.codiary.backend.global.web.dto.Category;
 
+import lombok.AllArgsConstructor;
+import lombok.Builder;
+import lombok.Getter;
+import lombok.NoArgsConstructor;
+
+import java.util.List;
+
 public class CategoryResponseDTO {
+
+    @Getter
+    @Builder
+    @NoArgsConstructor
+    @AllArgsConstructor
+    public static class CategoryPreviewDTO {
+        Long categoryId;
+        String categoryName;
+    }
+
+    @Getter
+    @Builder
+    @NoArgsConstructor
+    @AllArgsConstructor
+    public static class CategoryPreviewListDTO {
+        List<CategoryPreviewDTO> categories;
+    }
 }