From fec2f7b6f6d94f17d975334281909887d350e3be Mon Sep 17 00:00:00 2001
From: Moritz <moritz.m@local-it.org>
Date: Mon, 23 Feb 2026 22:10:38 +0100
Subject: [PATCH] Constants: add vereinfacht_required_member_fields

Defines first_name, last_name, street, postal_code, city as required
when Vereinfacht integration is active.
---
 lib/mv/constants.ex | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

diff --git a/lib/mv/constants.ex b/lib/mv/constants.ex
index 4ef355d..de429e8 100644
--- a/lib/mv/constants.ex
+++ b/lib/mv/constants.ex
@@ -27,8 +27,26 @@ defmodule Mv.Constants do
 
   @email_validator_checks [:html_input, :pow]
 
+  # Member fields that are required when Vereinfacht integration is active (contact sync)
+  @vereinfacht_required_member_fields [:first_name, :last_name, :street, :postal_code, :city]
+
   def member_fields, do: @member_fields
 
+  @doc """
+  Returns member fields that are always required when Vereinfacht integration is configured.
+
+  Used for validation, member form required indicators, and settings UI (checkbox disabled).
+  """
+  def vereinfacht_required_member_fields, do: @vereinfacht_required_member_fields
+
+  @doc """
+  Returns whether the given member field is required by Vereinfacht when integration is active.
+  """
+  def vereinfacht_required_field?(field) when is_atom(field),
+    do: field in @vereinfacht_required_member_fields
+
+  def vereinfacht_required_field?(_), do: false
+
   @doc """
   Returns the prefix used for custom field keys in field visibility maps.