finished edit the response

src/space/services/space.service.ts

@@ -275,11 +275,11 @@ export class SpaceService {
 
       const spaces = await queryBuilder.getMany();
 
-      const spaceHierarchy = this.buildSpaceHierarchy(spaces);
+      const transformedSpaces = spaces.map(this.transformSpace);
 
       return new SuccessResponseDto({
         message: `Spaces in community ${communityUuid} successfully fetched in hierarchy`,
-        data: onlyWithDevices ? spaces : spaceHierarchy,
+        data: onlyWithDevices ? spaces : transformedSpaces,
         statusCode: HttpStatus.OK,
       });
     } catch (error) {
@@ -290,6 +290,28 @@ export class SpaceService {
     }
   }
 
+  private transformSpace(space) {
+    const { productAllocations, subspaces, ...restSpace } = space;
+
+    const tags = productAllocations.flatMap((pa) => pa.tags);
+
+    const transformedSubspaces = subspaces.map((subspace) => {
+      const {
+        productAllocations: subspaceProductAllocations,
+        ...restSubspace
+      } = subspace;
+      const subspaceTags = subspaceProductAllocations.flatMap((pa) => pa.tags);
+      return {
+        ...restSubspace,
+        tags: subspaceTags,
+      };
+    });
+    return {
+      ...restSpace,
+      tags,
+      subspaces: transformedSubspaces,
+    };
+  }
   async findOne(params: GetSpaceParam): Promise<BaseResponseDto> {
     const { communityUuid, spaceUuid, projectUuid } = params;
     try {