From 4ae62f291155b5d22ad1169c80e24d1f0da6b5ae Mon Sep 17 00:00:00 2001
From: Thatsaphorn Atchariyaphap <thatsaphorn@outlook.de>
Date: Mon, 7 Jul 2025 22:02:38 +0200
Subject: [PATCH] Handle empty input validation in `validateCustomer` use case

---
 .../services/customers/usecases/validateCustomer.ts           | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/internal_frontend/services/customers/usecases/validateCustomer.ts b/internal_frontend/services/customers/usecases/validateCustomer.ts
index 5de1984..abcd497 100644
--- a/internal_frontend/services/customers/usecases/validateCustomer.ts
+++ b/internal_frontend/services/customers/usecases/validateCustomer.ts
@@ -11,5 +11,9 @@ export async function validateCustomer(input: {
     zip: string;
     city: string;
 }): Promise<Customer[]> {
+    if (Object.values(input).every(value => !value?.trim())) {
+        return [];
+    }
+
     return await callApi<Customer[]>(customerRoutes.validate, "POST", input);
 }
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