[Feature] 카테고리 추가 API

gg-admin-repo/src/main/java/gg/admin/repo/category/CategoryAdminRepository.java

@@ -0,0 +1,10 @@
+package gg.admin.repo.category;
+
+import org.springframework.data.jpa.repository.JpaRepository;
+
+import gg.data.party.Category;
+
+public interface CategoryAdminRepository extends JpaRepository<Category, Long> {
+
+	Boolean existsByName(String categoryName);
+}

gg-admin-repo/src/main/java/gg/admin/repo/room/RoomAdminRepository.java

@@ -0,0 +1,13 @@
+package gg.admin.repo.room;
+
+import java.util.List;
+
+import org.springframework.data.jpa.repository.JpaRepository;
+
+import gg.data.party.Category;
+import gg.data.party.Room;
+
+public interface RoomAdminRepository extends JpaRepository<Room, Long> {
+	List<Room> findByCategory(Category category);
+
+}

gg-data/src/main/java/gg/data/party/Category.java

@@ -22,4 +22,7 @@ public class Category extends BaseTimeEntity {
 	@Column(name = "name", length = 10)
 	private String name;
 
+	public Category(String name) {
+		this.name = name;
+	}
 }

gg-data/src/main/java/gg/data/party/Room.java

@@ -63,13 +63,24 @@ public class Room extends BaseTimeEntity {
 	@Column(name = "due_date")
 	private LocalDateTime dueDate;
 
+	@Column(name = "start_date")
+	private LocalDateTime startDate;
+
 	@OneToMany(mappedBy = "room", cascade = CascadeType.ALL)
 	private List<Comment> comments = new ArrayList<>();
 
 	@Enumerated(EnumType.STRING)
 	@Column(name = "status")
 	private RoomType status;
 
+	public void updateCurrentPeople(int currentPeople) {
+		this.currentPeople = currentPeople;
+	}
+
+	public void updateCategory(Category category) {
+		this.category = category;
+	}
+
 	@Builder
 	public Room(User host, User creator, Category category, String title, String content, Integer currentPeople,
 		Integer maxPeople, Integer minPeople, LocalDateTime dueDate, RoomType status) {
@@ -85,10 +96,6 @@ public Room(User host, User creator, Category category, String title, String con
 		this.status = status;
 	}
 
-	public void updateCurrentPeople(int currentPeople) {
-		this.currentPeople = currentPeople;
-	}
-
 	public void updateStatus(RoomType status) {
 		this.status = status;
 	}

gg-pingpong-api/src/main/java/gg/party/api/admin/category/controller/CategoryAdminController.java

@@ -1,7 +1,42 @@
-package gg.pingpong.api.party.admin.category.controller;
+package gg.party.api.admin.category.controller;
 
+import org.springframework.http.HttpStatus;
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.bind.annotation.DeleteMapping;
+import org.springframework.web.bind.annotation.PathVariable;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.RequestBody;
+import org.springframework.web.bind.annotation.RequestMapping;
 import org.springframework.web.bind.annotation.RestController;
 
+import gg.party.api.admin.category.controller.request.CategoryAddAdminReqDto;
+import gg.party.api.admin.category.service.CategoryAdminService;
+import lombok.RequiredArgsConstructor;
+
 @RestController
+@RequiredArgsConstructor
+@RequestMapping("/party/admin/categories")
 public class CategoryAdminController {
+	private final CategoryAdminService categoryAdminService;
+
+	/**
+	 * 카테고리 삭제
+	 * @return 삭제 성공 여부
+	 */
+	@DeleteMapping("{category_id}")
+	public ResponseEntity<Void> categoryRemove(@PathVariable("category_id") Long categoryId) {
+		categoryAdminService.removeCategory(categoryId);
+		return ResponseEntity.status(HttpStatus.NO_CONTENT).build();
+	}
+
+	/**
+	 * 카테고리 추가
+	 * @param reqDto 추가할 카테고리 이름
+	 * @return 추가 성공 여부
+	 */
+	@PostMapping
+	public ResponseEntity<Void> categoryAdd(@RequestBody CategoryAddAdminReqDto reqDto) {
+		categoryAdminService.addCategory(reqDto);
+		return ResponseEntity.status(HttpStatus.CREATED).build();
+	}
 }

gg-pingpong-api/src/main/java/gg/party/api/admin/category/controller/request/CategoryAddAdminReqDto.java

@@ -0,0 +1,10 @@
+package gg.party.api.admin.category.controller.request;
+
+import lombok.Getter;
+import lombok.NoArgsConstructor;
+
+@Getter
+@NoArgsConstructor
+public class CategoryAddAdminReqDto {
+	private String categoryName;
+}

gg-pingpong-api/src/main/java/gg/party/api/admin/category/service/CategoryAdminService.java

@@ -0,0 +1,60 @@
+package gg.party.api.admin.category.service;
+
+import org.springframework.stereotype.Service;
+import org.springframework.transaction.annotation.Transactional;
+
+import gg.admin.repo.category.CategoryAdminRepository;
+import gg.admin.repo.room.RoomAdminRepository;
+import gg.data.party.Category;
+import gg.party.api.admin.category.controller.request.CategoryAddAdminReqDto;
+import gg.utils.exception.party.CategoryDuplicateException;
+import gg.utils.exception.party.CategoryNotFoundException;
+import gg.utils.exception.party.DefaultCategoryNeedException;
+import lombok.RequiredArgsConstructor;
+
+@Service
+@RequiredArgsConstructor
+public class CategoryAdminService {
+	private final CategoryAdminRepository categoryAdminRepository;
+	private final RoomAdminRepository roomAdminRepository;
+
+	/**
+	 * 카테고리 삭제
+	 * 삭제 시 기존에 room에 연결되어 있던 카테고리는 default(1) 로 변경
+	 * @param categoryId 삭제할 카테고리 id
+	 * @exception CategoryNotFoundException 유효하지 않은 카테고리
+	 * @exception DefaultCategoryNeedException default 카테고리 존재 x 또는 default 카테고리 삭제 요청
+	 */
+	@Transactional
+	public void removeCategory(Long categoryId) {
+		Category category = categoryAdminRepository.findById(categoryId)
+			.orElseThrow(CategoryNotFoundException::new);
+
+		Category defaultCategory = categoryAdminRepository.findById(DefaultCategoryNeedException.DEFAULT_CATEGORY_ID)
+			.orElseThrow(DefaultCategoryNeedException::new);
+
+		if (category.equals(defaultCategory)) {
+			throw new DefaultCategoryNeedException();
+		}
+
+		roomAdminRepository.findByCategory(category)
+			.forEach(room -> room.updateCategory(defaultCategory));
+
+		categoryAdminRepository.deleteById(categoryId);
+	}
+
+	/**
+	 * 카테고리 추가
+	 * @param reqDto 추가할 카테고리 이름
+	 * @exception CategoryDuplicateException 중복된 카테고리
+	 */
+	@Transactional
+	public void addCategory(CategoryAddAdminReqDto reqDto) {
+		String categoryName = reqDto.getCategoryName();
+
+		if (categoryAdminRepository.existsByName(categoryName)) {
+			throw new CategoryDuplicateException();
+		}
+		categoryAdminRepository.save(new Category(categoryName));
+	}
+}

gg-pingpong-api/src/main/java/gg/party/api/user/category/controller/CategoryController.java

@@ -1,7 +1,30 @@
-package gg.pingpong.api.party.user.category.controller;
+package gg.party.api.user.category.controller;
 
+import java.util.List;
+
+import org.springframework.http.HttpStatus;
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.RequestMapping;
 import org.springframework.web.bind.annotation.RestController;
 
+import gg.party.api.user.category.controller.response.CategoryResDto;
+import gg.party.api.user.category.service.CategoryService;
+import lombok.RequiredArgsConstructor;
+
 @RestController
+@RequiredArgsConstructor
+@RequestMapping("/party/categories")
 public class CategoryController {
+	private final CategoryService categoryService;
+
+	/**
+	 * 카테고리 조회
+	 * @return 카테고리 전체 리스트
+	 */
+	@GetMapping
+	public ResponseEntity<List<CategoryResDto>> categoryList() {
+		return ResponseEntity.status(HttpStatus.OK).body(categoryService.findCategoryList());
+	}
+
 }

gg-pingpong-api/src/main/java/gg/party/api/user/category/controller/response/CategoryResDto.java

@@ -0,0 +1,15 @@
+package gg.party.api.user.category.controller.response;
+
+import gg.data.party.Category;
+import lombok.Getter;
+
+@Getter
+public class CategoryResDto {
+	private Long categoryId;
+	private String categoryName;
+
+	public CategoryResDto(Category category) {
+		this.categoryId = category.getId();
+		this.categoryName = category.getName();
+	}
+}

gg-pingpong-api/src/main/java/gg/party/api/user/category/service/CategoryService.java

@@ -0,0 +1,30 @@
+package gg.party.api.user.category.service;
+
+import java.util.List;
+import java.util.stream.Collectors;
+
+import org.springframework.data.domain.Sort;
+import org.springframework.stereotype.Service;
+import org.springframework.transaction.annotation.Transactional;
+
+import gg.party.api.user.category.controller.response.CategoryResDto;
+import gg.repo.party.CategoryRepository;
+import lombok.RequiredArgsConstructor;
+
+@Service
+@RequiredArgsConstructor
+public class CategoryService {
+	private final CategoryRepository categoryRepository;
+
+	/**
+	 * 카테고리 전체 조회
+	 * @return 카테고리 전체 리스트 (id 순으로 오름차순 정렬)
+	 */
+	@Transactional(readOnly = true)
+	public List<CategoryResDto> findCategoryList() {
+		return categoryRepository.findAll(Sort.by(Sort.Direction.ASC, "id")).stream()
+			.map(CategoryResDto::new)
+			.collect(Collectors.toList());
+	}
+
+}