feat: add soft-delete functionality for library items with confirmation dialog

Web/app.py

@@ -6035,6 +6035,79 @@ def delete_item(id):
     return redirect(url_for('home_admin'))
 
 
+@app.route('/delete_library_item/<id>', methods=['POST'])
+def delete_library_item(id):
+    """
+    Route to soft-delete library items (books/media) revisionssicher.
+    Requires admin and library module enabled.
+    """
+    if 'username' not in session:
+        flash('Nicht angemeldet.', 'error')
+        return redirect(url_for('login'))
+    if not us.check_admin(session['username']):
+        flash('Administratorrechte erforderlich.', 'error')
+        return redirect(url_for('login'))
+    if not cfg.MODULES.is_enabled('library'):
+        flash('Bibliotheks-Modul ist deaktiviert.', 'error')
+        return redirect(url_for('home_admin'))
+
+    # Verify item exists and is a library item
+    try:
+        item_doc = it.get_item(id)
+    except Exception:
+        item_doc = None
+
+    if not item_doc:
+        flash('Element nicht gefunden.', 'error')
+        return redirect(url_for('library_admin'))
+
+    if item_doc.get('ItemType') not in LIBRARY_ITEM_TYPES:
+        flash('Element ist kein Bibliotheksmedium.', 'error')
+        return redirect(url_for('library_admin'))
+
+    group_item_ids = it.get_group_item_ids(id)
+    if not group_item_ids:
+        flash('Element nicht gefunden.', 'error')
+        return redirect(url_for('library_admin'))
+
+    client = None
+    try:
+        client = MongoClient(MONGODB_HOST, MONGODB_PORT)
+        db = client[MONGODB_DB]
+        result = _soft_delete_item_groups(db, [id], session.get('username', ''))
+        success = bool(result.get('success'))
+        soft_deleted = int(result.get('soft_deleted_items', 0))
+        archived_files = int((result.get('archive') or {}).get('archived_files', 0))
+
+        try:
+            _append_audit_event_standalone(
+                event_type='library_item_deleted',
+                payload={
+                    'root_item_id': id,
+                    'group_item_ids': result.get('group_item_ids', []),
+                    'soft_deleted_items': soft_deleted,
+                    'archived_files': archived_files,
+                }
+            )
+        except Exception:
+            app.logger.warning('Audit write failed for library_item_deleted')
+
+    except Exception as e:
+        app.logger.error(f"Error deleting library item {id}: {e}")
+        success = False
+        archived_files = 0
+    finally:
+        if client:
+            client.close()
+
+    if success:
+        flash(f'Bibliotheksmedium revisionssicher deaktiviert ({soft_deleted} Versionen, {archived_files} Mediendateien archiviert).', 'success')
+    else:
+        flash('Fehler beim Löschen des Bibliotheksmediums.', 'error')
+
+    return redirect(url_for('library_admin'))
+
+
 @app.route('/bulk_delete_items', methods=['POST'])
 def bulk_delete_items():
     """Soft-delete multiple selected item groups in one request."""

Web/templates/library_table.html

@@ -720,6 +720,7 @@
                         ${actionLabel}
                     </button>
                     ${canEditLibraryItems ? `<button class="button" style="background:#0ea5e9;color:#fff;" onclick="openEditLibraryItem('${item._id}')">Bearbeiten</button>` : ''}
+                    ${canEditLibraryItems ? `<button class="button" style="background:#dc2626;color:#fff; margin-left:6px;" onclick="confirmDeleteLibraryItem('${item._id}')">Löschen</button>` : ''}
                 </td>
             </tr>
                 `;
@@ -739,6 +740,46 @@
         }
     }
 
+    // Confirm and call library item delete endpoint
+    function confirmDeleteLibraryItem(itemId) {
+        if (!itemId) return;
+        if (!confirm('Dieses Bibliotheksmedium revisionssicher löschen? Diese Aktion deaktiviert alle zugehörigen Exemplare und archiviert Medien.')) return;
+        deleteLibraryItem(itemId);
+    }
+
+    async function deleteLibraryItem(itemId) {
+        if (!itemId) return;
+        document.body.style.cursor = 'wait';
+        try {
+            const resp = await fetch(`/delete_library_item/${itemId}`, {
+                method: 'POST',
+                headers: {
+                    'X-CSRFToken': '{{ csrf_token }}'
+                },
+                credentials: 'same-origin'
+            });
+
+            const ct = resp.headers.get('Content-Type') || '';
+            if (ct.includes('application/json')) {
+                const j = await resp.json();
+                if (!resp.ok || j.ok === false) {
+                    alert(j.message || 'Fehler beim Löschen');
+                } else {
+                    alert(j.message || 'Gelöscht');
+                }
+                loadLibraryItems();
+            } else {
+                // Server redirected to HTML (flash messages). Reload to show state.
+                location.reload();
+            }
+        } catch (e) {
+            console.error('Delete failed', e);
+            alert('Fehler beim Löschen des Elements.');
+        } finally {
+            document.body.style.cursor = '';
+        }
+    }
+
     // Filter toggle
     document.getElementById('filterToggleBtn').addEventListener('click', () => {
         filterPanelOpen = !filterPanelOpen;