feat: 카테고리 상세조회 기능 구현

Author: ose0221

api/src/main/java/com/pinback/api/category/controller/CategoryControllerV3.java

@@ -1,5 +1,6 @@
 package com.pinback.api.category.controller;
 
+import org.springframework.web.bind.annotation.GetMapping;
 import org.springframework.web.bind.annotation.PatchMapping;
 import org.springframework.web.bind.annotation.PathVariable;
 import org.springframework.web.bind.annotation.PostMapping;
@@ -9,9 +10,11 @@
 
 import com.pinback.api.category.dto.request.CreateCategoryRequestV3;
 import com.pinback.api.category.dto.request.UpdateCategoryRequestV3;
+import com.pinback.application.category.dto.response.CategoryDetailResponseV3;
 import com.pinback.application.category.dto.response.CreateCategoryResponseV3;
 import com.pinback.application.category.dto.response.UpdateCategoryResponseV3;
 import com.pinback.application.category.port.in.CreateCategoryPort;
+import com.pinback.application.category.port.in.GetCategoryPort;
 import com.pinback.application.category.port.in.UpdateCategoryPort;
 import com.pinback.domain.user.entity.User;
 import com.pinback.shared.annotation.CurrentUser;
@@ -30,6 +33,7 @@
 public class CategoryControllerV3 {
 	private final CreateCategoryPort createCategoryPort;
 	private final UpdateCategoryPort updateCategoryPort;
+	private final GetCategoryPort getCategoryPort;
 
 	@Operation(summary = "카테고리 생성 V3", description = "공개여부 설정을 추가하여 새로운 카테고리를 생성합니다")
 	@PostMapping
@@ -51,4 +55,15 @@ public ResponseDto<UpdateCategoryResponseV3> updateCategoryV3(
 		UpdateCategoryResponseV3 response = updateCategoryPort.updateCategoryV3(user, categoryId, request.toCommand());
 		return ResponseDto.ok(response);
 	}
+
+	@Operation(summary = "카테고리 상세 조회 V3", description = "공개여부를 포함하여 대시보드에서 사용할 카테고리 정보를 조회합니다")
+	@GetMapping("/{categoryId}")
+	public ResponseDto<CategoryDetailResponseV3> getCategoriesForDashboardV3(
+		@Parameter(hidden = true) @CurrentUser User user,
+		@Parameter(description = "카테고리 ID") @PathVariable Long categoryId
+	) {
+		CategoryDetailResponseV3 response = getCategoryPort.getCategoryDetail(user, categoryId);
+		return ResponseDto.ok(response);
+
+	}
 }

application/src/main/java/com/pinback/application/category/dto/response/CategoryDetailResponseV3.java

@@ -0,0 +1,13 @@
+package com.pinback.application.category.dto.response;
+
+import com.pinback.domain.category.entity.Category;
+
+public record CategoryDetailResponseV3(
+	long categoryId,
+	String categoryName,
+	boolean isPublic
+) {
+	public static CategoryDetailResponseV3 from(Category category) {
+		return new CategoryDetailResponseV3(category.getId(), category.getName(), category.getIsPublic());
+	}
+}

application/src/main/java/com/pinback/application/category/port/in/GetCategoryPort.java

@@ -2,13 +2,16 @@
 
 import com.pinback.application.category.dto.response.CategoriesForDashboardResponse;
 import com.pinback.application.category.dto.response.CategoriesForExtensionResponse;
+import com.pinback.application.category.dto.response.CategoryDetailResponseV3;
 import com.pinback.domain.category.entity.Category;
 import com.pinback.domain.user.entity.User;
 
 public interface GetCategoryPort {
 	CategoriesForExtensionResponse getAllCategoriesForExtension(User user);
 
 	CategoriesForDashboardResponse getAllCategoriesForDashboard(User user);
-	
+
 	Category getCategoryAndUser(long categoryId, User user);
+
+	CategoryDetailResponseV3 getCategoryDetail(User user, Long categoryId);
 }

application/src/main/java/com/pinback/application/category/usecase/query/GetCategoryUsecase.java

@@ -11,6 +11,7 @@
 import com.pinback.application.category.dto.response.CategoriesForDashboardResponse;
 import com.pinback.application.category.dto.response.CategoriesForExtensionResponse;
 import com.pinback.application.category.dto.response.CategoryDashboardResponse;
+import com.pinback.application.category.dto.response.CategoryDetailResponseV3;
 import com.pinback.application.category.dto.response.CategoryResponse;
 import com.pinback.application.category.port.in.GetCategoryPort;
 import com.pinback.application.category.port.out.CategoryGetServicePort;
@@ -62,4 +63,12 @@ public CategoriesForDashboardResponse getAllCategoriesForDashboard(User user) {
 	public Category getCategoryAndUser(long categoryId, User user) {
 		return categoryGetServicePort.getCategoryAndUser(categoryId, user);
 	}
+
+	@Override
+	public CategoryDetailResponseV3 getCategoryDetail(User user, Long categoryId) {
+		Category category = categoryGetServicePort.getCategoryAndUser(categoryId, user);
+
+		return CategoryDetailResponseV3.from(category);
+	}
+
 }