feat: add department name uniqueness check and corresponding error message

src/main/java/com/onixbyte/helix/exception/BizException.java

@@ -44,40 +44,13 @@ public class BizException extends RuntimeException {
     private final String messageCode;
     private final Object[] messageArgs;
 
-    /**
-     * Constructs a new business exception with the specified HTTP status and message.
-     *
-     * @param message the detailed error message explaining the business logic violation
-     */
-    public BizException(String message) {
-        super(message);
-        this.status = HttpStatus.INTERNAL_SERVER_ERROR;
-        this.messageCode = null;
-        this.messageArgs = new Object[0];
-    }
-
-    /**
-     * Constructs a new business exception with the specified HTTP status and message.
-     *
-     * @param status  the HTTP status code to associate with this exception
-     * @param message the detailed error message explaining the business logic violation
-     */
-    public BizException(HttpStatus status, String message) {
-        super(message);
-        this.status = status;
-        this.messageCode = null;
-        this.messageArgs = new Object[0];
-    }
-
     public BizException(String messageCode, Object... messageArgs) {
-        super(messageCode);
         this.status = HttpStatus.INTERNAL_SERVER_ERROR;
         this.messageCode = messageCode;
         this.messageArgs = messageArgs == null ? new Object[0] : messageArgs;
     }
 
     public BizException(HttpStatus status, String messageCode, Object... messageArgs) {
-        super(messageCode);
         this.status = status;
         this.messageCode = messageCode;
         this.messageArgs = messageArgs == null ? new Object[0] : messageArgs;

src/main/java/com/onixbyte/helix/manager/DepartmentManager.java

@@ -3,6 +3,8 @@ package com.onixbyte.helix.manager;
 import com.onixbyte.helix.domain.entity.Department;
 import com.onixbyte.helix.exception.BizException;
 import com.onixbyte.helix.repository.DepartmentRepository;
+import jakarta.validation.constraints.NotBlank;
+import jakarta.validation.constraints.NotNull;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.data.domain.Page;
 import org.springframework.data.domain.Pageable;
@@ -68,4 +70,8 @@ public class DepartmentManager {
         departmentToEdit.setUpdatedAt(updatedAt);
         return departmentToEdit;
     }
+
+    public boolean existsByName(String name) {
+        return departmentRepository.existsByName(name);
+    }
 }

src/main/java/com/onixbyte/helix/repository/DepartmentRepository.java

@@ -15,4 +15,6 @@ public interface DepartmentRepository extends JpaRepository<Department, Long> {
                or d.parentId = :parentId
             """)
     Integer findMaxSort(Long parentId);
+
+    boolean existsByName(String name);
 }

src/main/java/com/onixbyte/helix/service/DepartmentService.java

@@ -4,10 +4,13 @@ import com.onixbyte.helix.domain.common.TreeNode;
 import com.onixbyte.helix.domain.entity.Department;
 import com.onixbyte.helix.domain.web.request.DepartmentRequest;
 import com.onixbyte.helix.enumeration.Status;
+import com.onixbyte.helix.exception.BizException;
 import com.onixbyte.helix.manager.DepartmentManager;
+import com.onixbyte.helix.shared.MessageName;
 import com.onixbyte.helix.utils.TreeUtil;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.data.domain.Pageable;
+import org.springframework.http.HttpStatus;
 import org.springframework.stereotype.Service;
 import org.springframework.transaction.annotation.Transactional;
 
@@ -38,6 +41,10 @@ public class DepartmentService {
     public Department addDepartment(DepartmentRequest request) {
         var createdAt = LocalDateTime.now();
 
+        if (departmentManager.existsByName(request.name())) {
+            throw new BizException(HttpStatus.CONFLICT, MessageName.REQUEST_CREATE_DEPARTMENT_NAME_DUPLICATED);
+        }
+
         var parentId = request.parentId();
         var sort = Optional.ofNullable(request.sort())
                 .orElseGet(() -> departmentManager.getNextSort(parentId));

src/main/java/com/onixbyte/helix/shared/MessageName.java

@@ -79,4 +79,6 @@ public class MessageName {
 
     public static final String REQUEST_QUERY_ROLE_STATUS_INVALID = "request.query-role.status.invalid";
     public static final String REQUEST_QUERY_USER_STATUS_INVALID = "request.query-user.status.invalid";
+
+    public static final String REQUEST_CREATE_DEPARTMENT_NAME_DUPLICATED = "request.create-department.name-duplicated";
 }

src/main/resources/i18n/messages.properties

@@ -19,28 +19,58 @@
 # OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 # SOFTWARE.
 #
-tree.multiple-roots=
-user.not-found=User with ID [{0}] not found.
-security.context-user-not-found=Cannot retrieve user information from security context.
-role.not-exists=Role does not exist in database.
-captcha.generate-failed=
-auth.provider.password-not-configured=Username or password is incorrect.
-auth.provider.bad-credentials=Username or password is incorrect.
-auth.provider.failed=Authentication failed, please try again later.
-auth.login.failed=Cannot perform login due to server error.
-auth.login.captcha-incorrect=Captcha is incorrect.
-auth.login.captcha-not-found=Captcha not found.
-authority.not-found=Authority with ID [{0}] not found.
-authority.code-used=Authority code [{0}] is already in use.
-asset.upload-failed=Failed to upload file: {0}
-asset.delete-forbidden=You are not able to delete an asset that is not uploaded by you.
-asset.invalid-prefix=Prefix must not be empty and must not start with '/' or '..'.
+
 asset.not-empty = File cannot be empty.
+asset.invalid-prefix = Prefix must not be empty and must not start with '/' or '..'.
+asset.delete-forbidden = You are not able to delete an asset that is not uploaded by you.
+asset.upload-failed = Failed to upload file: {0}
 
 authority.deleted = Authority [{0}] deleted.
+authority.code-used = Authority code [{0}] is already in use.
+authority.not-found = Authority with ID [{0}] not found.
+
+auth.login.captcha-not-found = Captcha not found.
+auth.login.captcha-incorrect = Captcha is incorrect.
+auth.login.failed = Cannot perform login due to server error.
+
+auth.provider.failed = Authentication failed, please try again later.
+auth.provider.bad-credentials = Username or password is incorrect.
+auth.provider.password-not-configured=Username or password is incorrect.
+
+captcha.generate-failed = Unable to generate captcha image.
+role.not-exists=Name of the authority cannot be null.
+role.not-found = Role with ID {0} not found.
+role.deleted = Role [{0}] deleted.
 
 user.password-reset-success = Password has been reset.
 user.deleted = User [{0}] deleted.
-role.not-found=Role with ID {0} not found.
-role.deleted=Role [{0}] deleted.
+user.not-found = User with ID [{0}] not found.
+
+security.context-user-not-found = Cannot retrieve user information from security context.
+tree.multiple-roots = Multiple root items found in given values.
+
+request.add-user.username.not-empty = Username cannot be empty.
+request.add-user.password.not-empty = Password cannot be empty.
+request.add-user.full-name.not-empty = Full name cannot be empty.
+
+request.authority.code.not-editable = Code cannot be edited.
+request.authority.code.not-null = Code cannot be null.
+request.authority.name.not-null = Name of the authority cannot be null.
+
+request.department.name.not-null = Name of the department should not be null.
+
+request.edit-role.id.not-null = Role ID cannot be null.
+request.edit-role.status.invalid = Status can only be ACTIVE or INACTIVE.
+
+request.edit-user.id.not-null = User ID cannot be null.
+request.edit-user.id.positive = User ID must be positive.
+
+request.reset-password.password.not-empty = Password cannot be empty.
+
 request.role.name.not-empty = Name of the role cannot be empty.
+request.role.code.not-empty = Code of the role cannot be empty.
+request.role.sort.not-null = Sort number cannot be null.
+
+request.query-role.status.invalid = Status can only be ACTIVE or INACTIVE.
+request.query-user.status.invalid = Status can only be ACTIVE, INACTIVE, or LOCKED.
+request.create-department.name-duplicated=Name of the department already exists.

src/main/resources/i18n/messages_en_GB.properties

@@ -74,3 +74,4 @@ request.role.sort.not-null = Sort number cannot be null.
 
 request.query-role.status.invalid = Status can only be ACTIVE or INACTIVE.
 request.query-user.status.invalid = Status can only be ACTIVE, INACTIVE, or LOCKED.
+request.create-department.name-duplicated=Name of the department already exists.

src/main/resources/i18n/messages_zh_CN.properties

@@ -74,3 +74,4 @@ request.role.sort.not-null = 排序编号不能为空。
 
 request.query-role.status.invalid = 状态只能是 ACTIVE 或 INACTIVE。
 request.query-user.status.invalid = 状态只能是 ACTIVE、INACTIVE 或 LOCKED。
+request.create-department.name-duplicated=部门名称已存在。