From ccaeedb4b107bd08cb97a83990fd63402713c2ed Mon Sep 17 00:00:00 2001
From: Lorenz Stechauner <lorenz.stechauner@necronda.net>
Date: Mon, 13 Mar 2023 19:15:43 +0100
Subject: [PATCH] Validate PLZ

---
 WGneu/Helpers/Validator.cs | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

diff --git a/WGneu/Helpers/Validator.cs b/WGneu/Helpers/Validator.cs
index 8953f4c..0df4256 100644
--- a/WGneu/Helpers/Validator.cs
+++ b/WGneu/Helpers/Validator.cs
@@ -60,15 +60,18 @@ namespace WGneu.Helpers {
             return new(true, null);
         }
 
-        public static ValidationResult CheckPlz(TextBox input, bool optional) {
+        public static ValidationResult CheckPlz(TextBox input, bool optional, AppDbContext ctx) {
             CheckNumeric(input, true, 4);
             if (optional && input.Text.Length == 0) {
                 return new(true, null);
             } else if (input.Text.Length != 4) {
                 return new(false, "PLZ zu kurz");
-            } else {
-                return new(true, null);
             }
+            int plz = int.Parse(input.Text);
+            if (!ctx.Postleitzahlen.Any(p => p.Plz == plz)) {
+                return new(false, "Ungültige PLZ");
+            }
+            return new(true, null);
         }
 
         public static ValidationResult CheckPhoneNumber(TextBox input, bool optional) {