POC oidc login

API/Extensions/StringExtensions.cs

@@ -52,4 +52,13 @@ public static class StringExtensions
     {
         return string.IsNullOrEmpty(value) ? defaultValue : double.Parse(value, CultureInfo.InvariantCulture);
     }
+
+    public static string? TrimPrefix(this string? value, string prefix)
+    {
+        if (string.IsNullOrEmpty(value)) return value;
+
+        if (!value.StartsWith(prefix)) return value;
+
+        return value.Substring(prefix.Length);
+    }
 }