[Bug] [dinky-web] Issue with creating a new task with a subdirectory of the same name (#3993)

Co-authored-by: yuhang2.zhang <yuhang2.zhang@ly.com>

Author: Jam804

dinky-admin/src/main/java/org/dinky/controller/CatalogueController.java

@@ -128,6 +128,9 @@ public Result<String> upload(MultipartFile file, @PathVariable Integer id) {
             dataType = "Catalogue",
             dataTypeClass = Catalogue.class)
     public Result<Void> saveOrUpdateCatalogue(@RequestBody Catalogue catalogue) {
+        if (catalogueService.checkNameIsExistByParentId(catalogue)) {
+            return Result.failed(Status.NAME_IS_EXIST);
+        }
         if (catalogueService.saveOrUpdateOrRename(catalogue)) {
             return Result.succeed(Status.SAVE_SUCCESS);
         } else {

dinky-admin/src/main/java/org/dinky/service/catalogue/CatalogueService.java

@@ -144,6 +144,13 @@ public interface CatalogueService extends ISuperService<Catalogue> {
      */
     Boolean saveOrUpdateOrRename(Catalogue catalogue);
 
+    /**
+     * Check if the catalogue name is exist
+     * @param catalogue catalogue
+     * @return true if the catalogue name is exist
+     */
+    Boolean checkNameIsExistByParentId(Catalogue catalogue);
+
     /**
      * Check if the catalogue task name is exist
      * @param name catalogue task name

dinky-admin/src/main/java/org/dinky/service/catalogue/impl/CatalogueServiceImpl.java

@@ -582,6 +582,19 @@ public Boolean saveOrUpdateOrRename(Catalogue catalogue) {
         return saveOrUpdate(catalogue);
     }
 
+    /**
+     * Check if the catalogue name is exist
+     * @param catalogue catalogue
+     * @return true if the catalogue name is exist
+     */
+    @Override
+    public Boolean checkNameIsExistByParentId(Catalogue catalogue) {
+        return getBaseMapper()
+                .exists(new LambdaQueryWrapper<Catalogue>()
+                        .eq(Catalogue::getName, catalogue.getName())
+                        .ne(catalogue.getParentId() != null, Catalogue::getParentId, catalogue.getParentId()));
+    }
+
     private CatalogueTaskDTO getCatalogueTaskDTO(String name, Integer parentId) {
         CatalogueTaskDTO catalogueTaskDTO = new CatalogueTaskDTO();
         catalogueTaskDTO.setName(UUID.randomUUID().toString().substring(0, 6) + name);

dinky-common/src/main/java/org/dinky/data/enums/Status.java

@@ -196,6 +196,7 @@ public enum Status {
     CATALOGUE_NOT_EXIST(12017, "catalogue.not.exist"),
     CATALOGUE_IS_EXIST(12018, "catalogue.is.exist"),
     TASK_NAME_NOT_MATCH_CATALOGUE_NAME(12019, "task.name.not.match.catalogue.name"),
+    NAME_IS_EXIST(12021, "A task and a directory cannot have the same name under the same parent directory."),
 
     /**
      * alert instance