From 70b63e3dd4d3001f785e67eef2f716c062714886 Mon Sep 17 00:00:00 2001
From: Lorenz Stechauner <lorenz.stechauner@necronda.net>
Date: Mon, 27 Feb 2023 15:31:04 +0100
Subject: [PATCH] Add better TelNr validation

---
 WGneu/Validator.cs | 52 ++++++++++++++++++++++++++++++++++++----------
 1 file changed, 41 insertions(+), 11 deletions(-)

diff --git a/WGneu/Validator.cs b/WGneu/Validator.cs
index c000274..22413dd 100644
--- a/WGneu/Validator.cs
+++ b/WGneu/Validator.cs
@@ -10,11 +10,31 @@ namespace WGneu
 {
     static class Validator
     {
-        private static readonly string[] MOBILE_NRS = {
-            "650", "651", "652", "653", "655", "657", "659", "660", "661",
-            "663", "664", "665", "666", "667", "668", "669", "67", "68", "69"
+
+        private static readonly Dictionary<string, string[][]> PHONE_NRS = new() {
+            { "43", new string[][] {
+                Array.Empty<string>(),
+                new string[] { "57", "59" },
+                new string[] {
+                    "50", "517", "718", "804", "720", "780", "800", "802", "810",
+                    "820", "821", "828", "900", "901", "930", "931", "939",
+                    "650", "651", "652", "653", "655", "657", "659", "660", "661",
+                    "663", "664", "665", "666", "667", "668", "669", "67", "68", "69"
+                }
+            } },
+            { "49", Array.Empty<string[]>() },
+            { "48", Array.Empty<string[]>() },
+            { "420", Array.Empty<string[]>() },
+            { "421", Array.Empty<string[]>() },
+            { "36", Array.Empty<string[]>() },
+            { "386", Array.Empty<string[]>() },
+            { "39", Array.Empty<string[]>() },
+            { "33", Array.Empty<string[]>() },
+            { "41", Array.Empty<string[]>() },
+            { "423", Array.Empty<string[]>() },
         };
 
+
         public static ValidationResult CheckNumericInput(TextBox input)
         {
             return CheckNumericInput(input, -1);
@@ -51,7 +71,13 @@ namespace WGneu
             for (int i = 0, v = 0; i < input.Text.Length; i++)
             {
                 char ch = input.Text[i];
-                if (v == 0 && ch == '0')
+                if (v == 0 && input.Text.Length - i >= 2 && ch == '0' && input.Text[i + 1] == '0') {
+                    v++; i++;
+                    text += "+";
+                } else if (ch == '(' && input.Text.Length - i >= 3 && input.Text[i + 1] == '0' && input.Text[i + 2] == ')') {
+                    i += 2;
+                }
+                else if (v == 0 && ch == '0')
                 {
                     v += 3;
                     text += "+43";
@@ -63,14 +89,18 @@ namespace WGneu
                 }
                 else if (v > 0 && char.IsDigit(ch))
                 {
-                    if (text == "+43")
-                        text += " ";
-                    else if (v == 6 && MOBILE_NRS.Any(nr => text.StartsWith("+43 " + nr)))
-                        text += " ";
-                    else if (v == 4 && text.StartsWith("+43 1"))
-                        text += " ";
-                    else if (v == 7 && text.Length == 8 && text.StartsWith("+43 "))
+                    if (PHONE_NRS.Any(kv => text == "+" + kv.Key))
                         text += " ";
+                    if (text.StartsWith("+43 ")) {
+                        var nr = text[4..];
+                        var vws = PHONE_NRS["43"];
+                        if (v >= 4 && v - 4 < vws.Length && vws[v - 4].Any(vw => nr.StartsWith(vw)))
+                            text += " ";
+                        else if (nr == "1")
+                            text += " ";
+                        else if (v == 7 && nr.Length == 4)
+                            text += " ";
+                    }
                     v++;
                     text += ch;
                 }