folder structure

src/service/club/newsletter/newsletterService.ts

@@ -0,0 +1,43 @@
+import { dataSource } from "../../../data-source";
+import { newsletter } from "../../../entity/club/newsletter/newsletter";
+import InternalException from "../../../exceptions/internalException";
+
+export default abstract class NewsletterService {
+  /**
+   * @description get all newsletters
+   * @returns {Promise<[Array<newsletter>, number]>}
+   */
+  static async getAll(offset: number = 0, count: number = 25): Promise<[Array<newsletter>, number]> {
+    return await dataSource
+      .getRepository(newsletter)
+      .createQueryBuilder("newsletter")
+      .offset(offset)
+      .limit(count)
+      .getManyAndCount()
+      .then((res) => {
+        return res;
+      })
+      .catch((err) => {
+        throw new InternalException("newsletters not found", err);
+      });
+  }
+
+  /**
+   * @description get newsletter by id
+   * @returns {Promise<newsletter>}
+   */
+  static async getById(id: number): Promise<newsletter> {
+    return await dataSource
+      .getRepository(newsletter)
+      .createQueryBuilder("newsletter")
+      .leftJoinAndSelect("newsletter.recipientsByQuery", "query")
+      .where("newsletter.id = :id", { id: id })
+      .getOneOrFail()
+      .then((res) => {
+        return res;
+      })
+      .catch((err) => {
+        throw new InternalException("newsletter not found by id", err);
+      });
+  }
+}