added base service

src/space/common/base-product-item.service.ts

@@ -0,0 +1,69 @@
+import { HttpException, HttpStatus } from '@nestjs/common';
+import { QueryRunner } from 'typeorm';
+
+export abstract class BaseProductItemService {
+  protected async validateTags(
+    incomingTags: string[],
+    queryRunner: QueryRunner,
+    spaceUuid: string,
+  ): Promise<void> {
+    const duplicateTags = incomingTags.filter(
+      (tag, index) => incomingTags.indexOf(tag) !== index,
+    );
+
+    if (duplicateTags.length > 0) {
+      throw new HttpException(
+        `Duplicate tags found in the request: ${[...new Set(duplicateTags)].join(', ')}`,
+        HttpStatus.BAD_REQUEST,
+      );
+    }
+
+    const existingTagsQuery = `
+      SELECT tag FROM (
+        SELECT spi.tag
+        FROM "space-product-item" spi
+        INNER JOIN "space-product" spm ON spi.space_product_uuid = spm.uuid
+        WHERE spm.space_uuid = $1
+        UNION
+        SELECT spi.tag
+        FROM "subspace-product-item" spi
+        INNER JOIN "subspace-product" spm ON spi.subspace_product_uuid = spm.uuid
+        INNER JOIN "subspace" sm ON spm.subspace_uuid = sm.uuid
+        WHERE sm.space_uuid = $1
+      ) AS combined_tags;
+    `;
+
+    const existingTags = await queryRunner.manager.query(existingTagsQuery, [
+      spaceUuid,
+    ]);
+
+    const existingTagSet = new Set(
+      existingTags.map((row: { tag: string }) => row.tag),
+    );
+    const conflictingTags = incomingTags.filter((tag) =>
+      existingTagSet.has(tag),
+    );
+
+    if (conflictingTags.length > 0) {
+      throw new HttpException(
+        `Tags already exist in the model: ${conflictingTags.join(', ')}`,
+        HttpStatus.CONFLICT,
+      );
+    }
+  }
+
+  protected async saveProductItems<T>(
+    productItems: T[],
+    targetRepository: any,
+    queryRunner: QueryRunner,
+  ): Promise<void> {
+    try {
+      await queryRunner.manager.save(targetRepository, productItems);
+    } catch (error) {
+      throw new HttpException(
+        error.message || 'An error occurred while creating product items.',
+        HttpStatus.INTERNAL_SERVER_ERROR,
+      );
+    }
+  }
+}

src/space/common/index.ts

@@ -0,0 +1 @@
+export * from './base-product-item.service';