migrated setting routes to typescript

backend/src/services/UserServices/ListUsersService.ts

@@ -0,0 +1,51 @@
+import { Sequelize, Op } from "sequelize";
+import User from "../../models/User";
+
+interface Request {
+  searchParam?: string;
+  pageNumber?: number;
+}
+
+interface Response {
+  users: User[];
+  count: number;
+  hasMore: boolean;
+}
+
+const ListUsersService = async ({
+  searchParam = "",
+  pageNumber = 1
+}: Request): Promise<Response> => {
+  const whereCondition = {
+    [Op.or]: [
+      {
+        name: Sequelize.where(
+          Sequelize.fn("LOWER", Sequelize.col("name")),
+          "LIKE",
+          `%${searchParam.toLowerCase()}%`
+        )
+      },
+      { email: { [Op.like]: `%${searchParam.toLowerCase()}%` } }
+    ]
+  };
+  const limit = 20;
+  const offset = limit * (pageNumber - 1);
+
+  const { count, rows: users } = await User.findAndCountAll({
+    where: whereCondition,
+    attributes: ["name", "id", "email", "profile"],
+    limit,
+    offset,
+    order: [["createdAt", "DESC"]]
+  });
+
+  const hasMore = count > limit + users.length;
+
+  return {
+    users,
+    count,
+    hasMore
+  };
+};
+
+export default ListUsersService;