Changes so the edeting function can also adeit all the Codes and the entire mamunt of an itemgroup

Web/app.py

@@ -6372,7 +6372,6 @@ def item_edit(id):
     """
     Endpoint zum Laden und Aktualisieren eines Eintrags (item_edit).
     """
-    # 1. Rechte- & Auth-Check
     if 'username' not in session:
         if request.method == 'POST' and request.is_json:
             return jsonify({'success': False, 'message': 'Nicht angemeldet.'}), 401
@@ -6392,7 +6391,6 @@ def item_edit(id):
         flash('Ungültige Element-ID.', 'error')
         return redirect(url_for('home_admin'))
 
-
     # --- GET: Template anzeigen ---
     if request.method == 'GET':
         item = it.get_item(id)
@@ -6401,10 +6399,24 @@ def item_edit(id):
             return redirect(url_for('home_admin'))
 
         item['_id'] = str(item['_id'])
+
+        # Gruppen-Codes aufteilen in Basis-Code und Einzelcodes für die Textarea
+        base_code = item.get('Code_4', '')
+        individual_codes = []
+        if item.get('SeriesGroupId'):
+            group_ids = it.get_group_item_ids(str(item['_id']))
+            if group_ids:
+                for gid in group_ids:
+                    g_item = it.get_item(gid)
+                    c4 = g_item.get('Code_4')
+                    if c4 and c4 != base_code:
+                        individual_codes.append(c4)
+
+        item['IndividualCodes'] = '\n'.join(individual_codes)
         show_library = cfg.MODULES.is_enabled('library')
 
         return render_template(
-            'edit_library.html',
+            'item_edit.html',
             username=session['username'],
             item=item,
             library_module_enabled=show_library,
@@ -6420,13 +6432,24 @@ def item_edit(id):
         flash('Element in der Datenbank nicht gefunden.', 'error')
         return redirect(redirect_target)
 
-    # Formulardaten auslesen und bereinigen
+    # Formulardaten auslesen
     name = sanitize_form_value(request.form.get('name'))
     ort = sanitize_form_value(request.form.get('ort'))
     beschreibung = sanitize_form_value(request.form.get('beschreibung'))
-    code_4 = sanitize_form_value(request.form.get('code_4'))
-    isbn_raw = sanitize_form_value(request.form.get('isbn', ''))
 
+    # Basis-Code & Einzelcodes
+    code_4 = sanitize_form_value(request.form.get('code_4'))
+    individual_codes_raw = request.form.get('individual_codes', '')
+
+    individual_codes = []
+    for c in individual_codes_raw.replace('\r', '').split('\n'):
+        clean_c = sanitize_form_value(c)
+        if clean_c and clean_c != code_4 and clean_c not in individual_codes:
+            individual_codes.append(clean_c)
+
+    all_codes_to_check = [code_4] + individual_codes
+
+    isbn_raw = sanitize_form_value(request.form.get('isbn', ''))
     anschaffungs_jahr = sanitize_form_value(request.form.get('anschaffungsjahr'))
     anschaffungs_kosten = sanitize_form_value(request.form.get('anschaffungskosten'))
     reservierbar = 'reservierbar' in request.form
@@ -6438,15 +6461,32 @@ def item_edit(id):
     filter2 = expand_filter_selection(sanitize_form_value(request.form.getlist('filter2')), 2)
     filter3 = sanitize_form_value(request.form.getlist('filter3'))
 
-    # WICHTIG: Den aktuellen Verfügbarkeitsstatus aus der Datenbank übernehmen
     verfuegbar = current_item.get('Verfuegbar', True)
 
-    # Barcode Prüfen
-    if code_4 and not it.is_code_unique(code_4, exclude_id=str(id)):
-        flash(f'Der Code "{code_4}" wird bereits verwendet.', 'error')
+    # Sicherer Uniqueness-Check für alle Codes über eine lokale DB-Verbindung
+    current_group_id = current_item.get('SeriesGroupId')
+    client = MongoClient(cfg.MONGODB_HOST, cfg.MONGODB_PORT)
+    db_instance = client[cfg.MONGODB_DB]
+    items_col = db_instance['items']
+
+    has_code_error = False
+    for code in all_codes_to_check:
+        if not code:
+            continue
+        existing = items_col.find_one({'Code_4': code, 'Deleted': {'$ne': True}})
+        if existing:
+            is_same_item = str(existing['_id']) == str(id)
+            is_in_same_group = current_group_id and existing.get('SeriesGroupId') == current_group_id
+            if not is_same_item and not is_in_same_group:
+                flash(f'Der Code "{code}" wird bereits von einem anderen Artikel verwendet.', 'error')
+                has_code_error = True
+                break
+    client.close()
+
+    if has_code_error:
         return redirect(redirect_target)
 
-    # ISBN und Medientyp verarbeiten
+    # ISBN validieren
     item_isbn = ''
     item_type = item_type_input or current_item.get('ItemType', 'general')
     if cfg.MODULES.is_enabled('library') and isbn_raw:
@@ -6455,7 +6495,7 @@ def item_edit(id):
             flash('Ungültiges ISBN-Format.', 'error')
             return redirect(redirect_target)
 
-    # Bilder verarbeiten (GridFS)
+    # Bilder verarbeiten
     images_to_keep = request.form.getlist('existing_images')
     original_images = current_item.get('Images', [])
     images = [img for img in original_images if img in images_to_keep]
@@ -6469,30 +6509,23 @@ def item_edit(id):
                 if not is_allowed:
                     flash(error_msg, 'error')
                     return redirect(redirect_target)
-
                 try:
                     secure_name = secure_filename(file.filename)
                     file.seek(0)
                     image_bytes = file.read()
-
                     if not image_bytes:
                         continue
-
                     optimized_io = io.BytesIO()
                     with Image.open(io.BytesIO(image_bytes)) as img:
                         if img.mode not in ('RGB', 'RGBA'):
                             img = img.convert('RGBA')
-
                         max_width = 800
                         if img.width > max_width:
                             ratio = max_width / img.width
                             img = img.resize((max_width, int(img.height * ratio)), Image.Resampling.LANCZOS)
-
                         img.save(optimized_io, format='WEBP', quality=85, optimize=True)
-
                     optimized_io.seek(0)
                     new_filename = f"{uuid.uuid4().hex}_{int(time.time())}.webp"
-
                     fs.put(
                         optimized_io,
                         filename=new_filename,
@@ -6506,6 +6539,10 @@ def item_edit(id):
     if ort and ort not in it.get_predefined_locations():
         it.add_predefined_location(ort)
 
+    # 1. Gruppen-Bestand über die neue Helfer-Funktion synchronisieren
+    it.sync_group_codes(str(id), code_4, individual_codes)
+
+    # 2. Deine zentrale update_item Funktion aufrufen
     success = it.update_item(
         id=str(id),
         name=name,