corrected type mismatch

Web/app.py

@@ -6366,12 +6366,22 @@ def edit_item(id):
 
     return redirect(url_for('home_admin'))
 
+def is_library_item(item):
+    """
+    Prüft, ob ein Artikel ein Bibliotheks-Item ist.
+    - 'other', None oder Leerstring -> Inventarsystem (False)
+    - Jeder andere Medientyp ('Buch', 'CD', etc.) -> Bibliothek (True)
+    """
+    if not item:
+        return False
+    item_type = item.get('ItemType', 'other')
+    if not item_type:
+        return False
+    return item_type.strip().lower() != 'other'
+
 
 @app.route('/item_edit/<id>', methods=['GET', 'POST'])
 def item_edit(id):
-    """
-    Endpoint zum Laden und Aktualisieren eines Eintrags (item_edit).
-    """
     if 'username' not in session:
         if request.method == 'POST' and request.is_json:
             return jsonify({'success': False, 'message': 'Nicht angemeldet.'}), 401
@@ -6391,22 +6401,26 @@ def item_edit(id):
         flash('Ungültige Element-ID.', 'error')
         return redirect(url_for('home_admin'))
 
-    # --- GET: Template anzeigen ---
+    current_item = it.get_item(obj_id)
+    if not current_item:
+        flash('Element in der Datenbank nicht gefunden.', 'error')
+        return redirect(url_for('home_admin'))
+
+    # Bibliothek-Status ermitteln
+    library_module_active = cfg.MODULES.is_enabled('library')
+    is_lib_item = it.is_library_item(current_item)
+    show_library_features = library_module_active and is_lib_item
+
+    # -------------------------------------------------------------------
+    # GET METHOD
+    # -------------------------------------------------------------------
     if request.method == 'GET':
-        item = it.get_item(id)
-        if not item:
-            flash('Element nicht gefunden.', 'error')
-            return redirect(url_for('home_admin'))
+        current_item['_id'] = str(current_item['_id'])
 
-        item['_id'] = str(item['_id'])
-
-        # Codes für die Ansicht trennen (Basis-Code vs. Einzelcodes)
-        base_code = item.get('Code_4', '')
+        base_code = current_item.get('Code_4', '')
         individual_codes = []
-
-        group_id = item.get('SeriesGroupId')
-        if group_id:
-            group_ids = it.get_group_item_ids(str(item['_id']))
+        if current_item.get('SeriesGroupId'):
+            group_ids = it.get_group_item_ids(str(current_item['_id']))
             if group_ids:
                 for gid in group_ids:
                     g_item = it.get_item(gid)
@@ -6414,32 +6428,29 @@ def item_edit(id):
                     if c4 and c4 != base_code:
                         individual_codes.append(c4)
 
-        item['IndividualCodes'] = '\n'.join(individual_codes)
-        show_library = cfg.MODULES.is_enabled('library')
+        current_item['IndividualCodes'] = '\n'.join(individual_codes)
 
         return render_template(
             'edit_library.html',
             username=session['username'],
-            item=item,
-            library_module_enabled=show_library,
-            show_library_features=show_library,
-            page_title=f"Bearbeiten: {item.get('Name', '')}"
+            item=current_item,
+            show_library_features=show_library_features,
+            library_module_enabled=library_module_active,
+            page_title=f"Bearbeiten: {current_item.get('Name', '')}"
         )
 
-        # --- POST: Speichern ---
+    # -------------------------------------------------------------------
+    # POST METHOD
+    # -------------------------------------------------------------------
     redirect_target = request.referrer or url_for('home_admin')
-    current_item = it.get_item(obj_id)
 
-    if not current_item:
-        flash('Element in der Datenbank nicht gefunden.', 'error')
-        return redirect(redirect_target)
-
-    # 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'))
+    anschaffungs_jahr = sanitize_form_value(request.form.get('anschaffungsjahr'))
+    anschaffungs_kosten = sanitize_form_value(request.form.get('anschaffungskosten'))
+    reservierbar = 'reservierbar' in request.form
 
-    # Basis-Code & Einzelcodes aus der Textarea
     code_4 = sanitize_form_value(request.form.get('code_4'))
     individual_codes_raw = request.form.get('individual_codes', '')
 
@@ -6451,21 +6462,6 @@ def item_edit(id):
 
     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
-
-    item_type_input = sanitize_form_value(request.form.get('item_type_input'))
-    library_category = sanitize_form_value(request.form.get('library_category'))
-
-    filter1 = expand_filter_selection(sanitize_form_value(request.form.getlist('filter')), 1)
-    filter2 = expand_filter_selection(sanitize_form_value(request.form.getlist('filter2')), 2)
-    filter3 = sanitize_form_value(request.form.getlist('filter3'))
-
-    verfuegbar = current_item.get('Verfuegbar', True)
-
-    # Uniqueness-Check über alle Codes
     current_group_id = current_item.get('SeriesGroupId')
     client = MongoClient(cfg.MONGODB_HOST, cfg.MONGODB_PORT)
     db_instance = client[cfg.MONGODB_DB]
@@ -6488,17 +6484,78 @@ def item_edit(id):
     if has_code_error:
         return redirect(redirect_target)
 
-    # 1. Gruppen-Bestand über die korrigierte Helfer-Funktion synchronisieren
+    if show_library_features:
+        # LIBRARY ITEM: Process ISBN/Medientyp/Category, preserve existing filters
+        isbn_raw = sanitize_form_value(request.form.get('isbn', ''))
+        item_isbn = normalize_and_validate_isbn(isbn_raw) if isbn_raw else ''
+        item_type = sanitize_form_value(request.form.get('item_type_input', current_item.get('ItemType', 'Buch')))
+        library_category = sanitize_form_value(request.form.get('library_category', ''))
+        images = current_item.get('Images', [])
+
+        filter1 = current_item.get('Filter', [])
+        filter2 = current_item.get('Filter2', [])
+        filter3 = current_item.get('Filter3', [])
+    else:
+        # NON-LIBRARY (INVENTORY) ITEM: Process Filter 1-3 from form
+        item_isbn = current_item.get('ISBN', '')
+        item_type = 'other'
+        library_category = current_item.get('library_category', '')
+
+        filter1 = expand_filter_selection(sanitize_form_value(request.form.getlist('filter')), 1)
+        filter2 = expand_filter_selection(sanitize_form_value(request.form.getlist('filter2')), 2)
+        filter3 = sanitize_form_value(request.form.getlist('filter3'))
+
+        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]
+
+        new_files = request.files.getlist('images')
+        if new_files and new_files[0].filename != '':
+            fs = get_gridfs()
+            for file in new_files:
+                if file and file.filename:
+                    is_allowed, error_msg = allowed_file(file.filename, file)
+                    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,
+                            content_type='image/webp',
+                            metadata={'original_filename': secure_name, 'item_id': str(id)}
+                        )
+                        images.append(new_filename)
+                    except Exception as e:
+                        app.logger.error(f"Image error for item {id}: {e}")
+    if ort and ort not in it.get_predefined_locations():
+        it.add_predefined_location(ort)
+
     it.sync_group_codes(str(id), code_4, individual_codes)
 
-    # 2. Deine bestehende update_item Funktion aufrufen
     success = it.update_item(
         id=str(id),
         name=name,
         ort=ort,
         beschreibung=beschreibung,
         images=images,
-        verfuegbar=verfuegbar,
+        verfuegbar=current_item.get('Verfuegbar', True),
         filter1=filter1,
         filter2=filter2,
         filter3=filter3,
@@ -6507,7 +6564,8 @@ def item_edit(id):
         code_4=code_4,
         reservierbar=reservierbar,
         isbn=item_isbn,
-        item_type=item_type
+        item_type=item_type,
+        library_category=library_category
     )
 
     if success:

Web/modules/database/items.py

@@ -27,6 +27,23 @@ from Web.modules.database.settings import MongoClient
 import Web.modules.inventarsystem.data_protection as dp
 
 
+def is_library_item(item):
+    """
+    Ermittelt zuverlässig, ob ein Objekt zur Bibliothek gehört.
+    Gibt True zurück, wenn ItemType ein Medientyp ist (Buch, Schulbuch, CD, DVD etc.)
+    ODER wenn is_library explizit True ist.
+    """
+    if not item:
+        return False
+
+    # 1. Prüfe zuerst den Medientyp (ItemType)
+    item_type = str(item.get('ItemType', '') or '').strip().lower()
+    if item_type and item_type not in ['other', 'general', 'none', 'null']:
+        return True
+
+    # 2. Falls ItemType 'other' ist, prüfe das is_library Flag
+    return bool(item.get('is_library', False))
+
 def safe_decrypt_user(encrypted_user):
     """
     Safely decrypt an encrypted username string.
@@ -251,7 +268,10 @@ def get_group_item_ids(id):
 
 
 def update_item(id, name, ort, beschreibung, images, verfuegbar, filter1, filter2, filter3,
-                ansch_jahr, ansch_kost, code_4, reservierbar, isbn=None, item_type='general'):
+                ansch_jahr, ansch_kost, code_4, reservierbar, isbn="", item_type='other', library_category=""):
+    """
+    Aktualisiert ein Objekt in MongoDB und setzt is_library korrekt basierend auf dem Medientyp.
+    """
     try:
         client = MongoClient(cfg.MONGODB_HOST, cfg.MONGODB_PORT)
         db = client[cfg.MONGODB_DB]
@@ -259,29 +279,35 @@ def update_item(id, name, ort, beschreibung, images, verfuegbar, filter1, filter
 
         old_item = items.find_one({'_id': ObjectId(id)})
         if not old_item:
+            client.close()
             return False
 
         series_group_id = old_item.get('SeriesGroupId')
 
+        # is_library automatisch anhand des neuen item_type bestimmen
+        is_lib = is_library_item({'ItemType': item_type})
+
         shared_update = {
             'Name': name,
             'Ort': ort,
             'Beschreibung': beschreibung,
-            'Images': images,
-            'Filter': filter1,
-            'Filter2': filter2,
-            'Filter3': filter3,
+            'Images': images if isinstance(images, list) else [],
+            'Filter': filter1 if isinstance(filter1, list) else [],
+            'Filter2': filter2 if isinstance(filter2, list) else [],
+            'Filter3': filter3 if isinstance(filter3, list) else [],
             'Anschaffungsjahr': ansch_jahr,
             'Anschaffungskosten': ansch_kost,
-            'Reservierbar': reservierbar,
-            'ISBN': isbn,
+            'Reservierbar': bool(reservierbar),
+            'ISBN': str(isbn) if isbn else '',
             'ItemType': item_type,
-            'Verfuegbar': verfuegbar,
+            'is_library': is_lib,
+            'library_category': library_category,
+            'Verfuegbar': bool(verfuegbar),
             'LastUpdated': datetime.datetime.now()
         }
 
         specific_update = shared_update.copy()
-        specific_update['Code_4'] = code_4
+        specific_update['Code_4'] = str(code_4) if code_4 else ''
 
         items.update_one({'_id': ObjectId(id)}, {'$set': specific_update})