roles and permissions

src/service/roleService.ts

@@ -0,0 +1,24 @@
+import { dataSource } from "../data-source";
+import { role } from "../entity/role";
+import InternalException from "../exceptions/internalException";
+
+export default abstract class RoleService {
+  /**
+   * @description get role by id
+   * @param id number
+   * @returns {Promise<role>}
+   */
+  static async getById(id: number): Promise<role> {
+    return await dataSource
+      .getRepository(role)
+      .createQueryBuilder("role")
+      .where("role.id = :id", { id: id })
+      .getOneOrFail()
+      .then((res) => {
+        return res;
+      })
+      .catch((err) => {
+        throw new InternalException("role not found by id");
+      });
+  }
+}