From 0401a7ae2a956a62e086929b4a6960441ca5905c Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Mathias=20Gla=CC=88ser?= <mathias.glaeser@beaufort.ch>
Date: Sun, 6 Sep 2026 13:51:44 +0200
Subject: [PATCH] Begrenze Bestandskorrekturen auf ganze Mengen

---
 modules/erp/lager/service.php   | 3 +++
 modules/shared/auth/ui/home.php | 4 ++--
 2 files changed, 5 insertions(+), 2 deletions(-)

diff --git a/modules/erp/lager/service.php b/modules/erp/lager/service.php
index c88f836..6b3e196 100644
--- a/modules/erp/lager/service.php
+++ b/modules/erp/lager/service.php
@@ -212,6 +212,9 @@ function update_stock_lot_traceability(
     if ($receiptQty < 0 || $outQty < 0) {
         throw new InvalidArgumentException('Zugang und Abgang duerfen nicht negativ sein');
     }
+    if (fmod($adjustmentQty, 1.0) !== 0.0) {
+        throw new InvalidArgumentException('Bestandskorrekturen muessen ganzzahlig sein');
+    }
     if ($adjustmentQty !== 0.0 && abs($adjustmentQty) < 0.0001) {
         $adjustmentQty = 0.0;
     }
diff --git a/modules/shared/auth/ui/home.php b/modules/shared/auth/ui/home.php
index 8f5bf8c..4f24506 100644
--- a/modules/shared/auth/ui/home.php
+++ b/modules/shared/auth/ui/home.php
@@ -354,9 +354,9 @@ function auth_render_lager_content(array $lagerProducts, array $lagerArtikel, ar
         . '<div class="sg-form-sections-card__field-group"><label class="sg-labeled-input-row"><span class="sg-label">MHD</span><input class="sg-interaction-element sg-input-single-line" type="date" id="lager-expiry-date" data-lager-expiry-date></label></div>'
         . '<div class="sg-form-sections-card__field-group"><label class="sg-labeled-input-row"><span class="sg-label">Einkaufsdatum</span><input class="sg-interaction-element sg-input-single-line" type="date" id="lager-purchase-date" data-lager-purchase-date></label></div>'
         . '</section><section class="sg-form-sections-card__chapter" aria-labelledby="lager-charge-movements-title"><h2 id="lager-charge-movements-title" class="sg-strong sg-form-sections-card__chapter-title">Lagerbewegungen</h2>'
-        . '<p class="sg-form-sections-card__sentence">Buchungen werden zusätzlich zur Rückverfolgbarkeit als Lagerbewegung gespeichert.</p>'
+        . '<p class="sg-form-sections-card__sentence">Buchungen werden zusätzlich zur Rückverfolgbarkeit als Lagerbewegung gespeichert. Positive Werte erhöhen den Bestand, negative Werte reduzieren ihn.</p>'
         . '<div class="sg-form-sections-card__field-group"><label class="sg-labeled-input-row"><span class="sg-label">Zugang buchen</span><input class="sg-interaction-element sg-input-single-line" type="number" min="0" step="0.01" inputmode="decimal" data-lager-receipt-qty placeholder="Menge"></label></div>'
-        . '<div class="sg-form-sections-card__field-group"><label class="sg-labeled-input-row"><span class="sg-label">Bestandskorrektur</span><input class="sg-interaction-element sg-input-single-line" type="number" step="0.01" inputmode="decimal" data-lager-adjustment-qty placeholder="+ / − Menge"></label></div>'
+        . '<div class="sg-form-sections-card__field-group"><label class="sg-labeled-input-row"><span class="sg-label">Bestandskorrektur (+ / −)</span><input class="sg-interaction-element sg-input-single-line" type="number" step="1" inputmode="numeric" data-lager-adjustment-qty placeholder="+ / − Menge"></label></div>'
         . '<div class="sg-form-sections-card__field-group"><label class="sg-labeled-input-row"><span class="sg-label">Abgang buchen</span><input class="sg-interaction-element sg-input-single-line" type="number" min="0" step="0.01" inputmode="decimal" data-lager-out-qty placeholder="Menge"></label></div>'
         . '</section><footer class="sg-form-sections-card__actions-segment" data-pattern-part="form-actions-segment"><div class="sg-form-sections-card__actions" data-pattern-part="form-actions"><button class="sg-interaction-element sg-button sg-button--active sg-form-sections-card__action" type="button" data-lager-edit-close>Abbrechen</button><button class="sg-interaction-element sg-button sg-button--process sg-form-sections-card__action" type="submit">Speichern</button></div></footer><p class="sg-body" data-lager-edit-status aria-live="polite"></p></div></form>'
         . '</div></div>'