Refactor bulk delete functionality to toggle visibility of checkboxes in admin view

Dockerfile

@@ -32,4 +32,4 @@ RUN if [ "$NUITKA_BUILD" = "1" ]; then \
 WORKDIR /app/Web
 EXPOSE 8000
 
-CMD ["gunicorn", "app:app", "--bind", "0.0.0.0:8000", "--workers", "3", "--timeout", "60", "--graceful-timeout", "20", "--max-requests", "1000", "--max-requests-jitter", "100", "--log-level", "info", "--access-logfile", "-", "--error-logfile", "-"]
+CMD ["gunicorn", "app:app", "--bind", "0.0.0.0:8000", "--workers", "2", "--timeout", "30", "--graceful-timeout", "20", "--max-requests", "200", "--max-requests-jitter", "50", "--log-level", "info", "--access-logfile", "-", "--error-logfile", "-"]

Web/app.py

@@ -2950,6 +2950,7 @@ def get_items():
         available_only = str(request.args.get('available_only', '')).strip().lower() in ('1', 'true', 'yes', 'on')
         offset_raw = request.args.get('offset')
         limit_raw = request.args.get('limit')
+        light_mode_param = str(request.args.get('light_mode', '')).strip().lower()
         pagination_requested = offset_raw is not None or limit_raw is not None
 
         if pagination_requested:
@@ -2966,6 +2967,13 @@ def get_items():
             offset = 0
             limit = None
 
+        if light_mode_param in ('1', 'true', 'yes', 'on'):
+            light_mode = True
+        elif light_mode_param in ('0', 'false', 'no', 'off'):
+            light_mode = False
+        else:
+            light_mode = (offset == 0)
+
         client = MongoClient(MONGODB_HOST, MONGODB_PORT)
         db = client[MONGODB_DB]
         items_col = db['items']
@@ -2977,18 +2985,97 @@ def get_items():
 
         total_count = items_col.count_documents(base_query)
 
-        items_cur = items_col.find(base_query).sort([('Name', 1), ('_id', 1)])
+        light_projection = {
+            'Name': 1,
+            'Code_4': 1,
+            'Images': 1,
+            'ThumbnailInfo': 1,
+            'Verfuegbar': 1,
+            'Filter': 1,
+            'Filter2': 1,
+            'Filter3': 1,
+            'Ort': 1,
+            'User': 1,
+            'ItemType': 1,
+        }
+
+        # Full projection: all details for detailed view
+        full_projection = {
+            'Name': 1,
+            'Ort': 1,
+            'Beschreibung': 1,
+            'Filter': 1,
+            'Filter2': 1,
+            'Filter3': 1,
+            'Code_4': 1,
+            'Images': 1,
+            'ThumbnailInfo': 1,
+            'Verfuegbar': 1,
+            'User': 1,
+            'BorrowerInfo': 1,
+            'appointments': 1,
+            'BlockedNow': 1,
+            'Reservierbar': 1,
+            'DamageReports': 1,
+            'ISBN': 1,
+            'Author': 1,
+            'Autor': 1,
+            'Anschaffungsjahr': 1,
+            'Anschaffungskosten': 1,
+            'Condition': 1,
+            'HasDamage': 1,
+            'ItemType': 1,
+            'SeriesGroupId': 1,
+            'LastUpdated': 1,
+        }
+
+        parent_projection = light_projection if light_mode else full_projection
+
+        items_cur = items_col.find(base_query, parent_projection).sort([('Name', 1), ('_id', 1)])
         if pagination_requested:
             items_cur = items_cur.skip(offset).limit(limit)
 
-        items = []
-        for itm in items_cur:
-            item_id_str = str(itm['_id'])
-            grouped_children = list(items_col.find({
-                'ParentItemId': item_id_str,
+        parent_items = list(items_cur)
+        parent_ids = [str(item.get('_id')) for item in parent_items if item.get('_id') is not None]
+
+        children_by_parent = {}
+        if parent_ids:
+            # Light mode: minimal child data for counting only
+            light_child_projection = {
+                '_id': 1,
+                'ParentItemId': 1,
+                'Code_4': 1,
+                'Verfuegbar': 1,
+                'Name': 1,
+            }
+            # Full mode: complete child data with all details
+            full_child_projection = {
+                '_id': 1,
+                'ParentItemId': 1,
+                'Code_4': 1,
+                'Verfuegbar': 1,
+                'Name': 1,
+                'Images': 1,
+                'ThumbnailInfo': 1,
+                'Beschreibung': 1,
+            }
+            child_projection = light_child_projection if light_mode else full_child_projection
+            
+            child_cursor = items_col.find({
+                'ParentItemId': {'$in': parent_ids},
                 'IsGroupedSubItem': True,
                 'Deleted': {'$ne': True},
-            }))
+            }, child_projection)
+            for child in child_cursor:
+                parent_id = str(child.get('ParentItemId') or '')
+                if not parent_id:
+                    continue
+                children_by_parent.setdefault(parent_id, []).append(child)
+
+        items = []
+        for itm in parent_items:
+            item_id_str = str(itm['_id'])
+            grouped_children = children_by_parent.get(item_id_str, [])
             grouped_count = 1 + len(grouped_children)
 
             grouped_units = [itm] + grouped_children
@@ -3028,6 +3115,7 @@ def get_items():
             'limit': limit if limit is not None else count,
             'count': count,
             'total': total_count,
+            'light_mode': light_mode,
             'has_more': pagination_requested and ((offset + count) < total_count)
         })
     except Exception as e:

Web/templates/main.html

@@ -728,10 +728,46 @@
     let mainItemsNextOffset = 0;
     let mainItemsHasMore = false;
     let mainItemsLoadingMore = false;
+    let mainItemsLightMode = true;  // Track if we're in light mode to gradually request full data
     let mainItemsObserver = null;
     let mainItemsSentinel = null;
+    let mainItemsLoadingIndicator = null;
     let mainItemsScrollPrefetchBound = false;
 
+    function ensureMainItemsLoadingIndicator() {
+        const itemsContainer = document.querySelector('#items-container');
+        if (!itemsContainer) return null;
+
+        if (!mainItemsLoadingIndicator) {
+            mainItemsLoadingIndicator = document.createElement('div');
+            mainItemsLoadingIndicator.id = 'main-items-loading-indicator';
+            mainItemsLoadingIndicator.className = 'items-loading-indicator';
+            mainItemsLoadingIndicator.innerHTML = `
+                <div class="loading-track"><div class="loading-fill"></div></div>
+                <div class="loading-label">Weitere Objekte werden vorbereitet...</div>
+            `;
+        }
+
+        itemsContainer.appendChild(mainItemsLoadingIndicator);
+        return itemsContainer;
+    }
+
+    function updateMainItemsLoadingIndicator() {
+        const itemsContainer = ensureMainItemsLoadingIndicator();
+        if (!itemsContainer || !mainItemsLoadingIndicator) return;
+
+        const shouldShow = mainItemsHasMore || mainItemsLoadingMore;
+        mainItemsLoadingIndicator.style.display = shouldShow ? 'flex' : 'none';
+        mainItemsLoadingIndicator.classList.toggle('is-loading', mainItemsLoadingMore);
+
+        const label = mainItemsLoadingIndicator.querySelector('.loading-label');
+        if (label) {
+            label.textContent = mainItemsLoadingMore
+                ? 'Weitere Objekte werden geladen...'
+                : 'Weitere Objekte werden vorbereitet...';
+        }
+    }
+
     function maybePrefetchMainItems() {
         const itemsContainer = document.querySelector('#items-container');
         if (!itemsContainer || !mainItemsHasMore || mainItemsLoadingMore) {
@@ -745,13 +781,18 @@
         }
 
         mainItemsLoadingMore = true;
+        updateMainItemsLoadingIndicator();
         loadItems(mainItemsNextOffset, true).finally(() => {
             mainItemsLoadingMore = false;
+            updateMainItemsLoadingIndicator();
         });
     }
 
     function loadItems(offset = 0, append = false) {
-        return fetch(`{{ url_for('get_items') }}?offset=${offset}&limit=${MAIN_ITEMS_PAGE_SIZE}`)
+        // Für Pages nach der ersten: Explizit vollständige Daten laden (light_mode=false)
+        // Erste Page: light_mode wird automatisch enablet
+        const lightModeParam = offset > 0 ? '&light_mode=false' : '';
+        return fetch(`{{ url_for('get_items') }}?offset=${offset}&limit=${MAIN_ITEMS_PAGE_SIZE}${lightModeParam}`)
             .then(response => response.json())
             .then(data => {
                 const itemsContainer = document.querySelector('#items-container');
@@ -1054,11 +1095,15 @@
 
                 mainItemsNextOffset = (data.offset || offset) + (data.count || pageItems.length);
                 mainItemsHasMore = Boolean(data.has_more);
+                updateMainItemsLoadingIndicator();
                 setupMainItemsLazyLoading();
                 maybePrefetchMainItems();
             })
             .catch(error => {
                 console.error('Error fetching items:', error);
+                mainItemsLoadingMore = false;
+                mainItemsHasMore = false;
+                updateMainItemsLoadingIndicator();
                 if (append) {
                     return;
                 }
@@ -1072,6 +1117,8 @@
         const itemsContainer = document.querySelector('#items-container');
         if (!itemsContainer) return null;
 
+        ensureMainItemsLoadingIndicator();
+
         if (!mainItemsSentinel) {
             mainItemsSentinel = document.createElement('div');
             mainItemsSentinel.id = 'main-items-sentinel';
@@ -1117,8 +1164,10 @@
             }
 
             mainItemsLoadingMore = true;
+            updateMainItemsLoadingIndicator();
             loadItems(mainItemsNextOffset, true).finally(() => {
                 mainItemsLoadingMore = false;
+                updateMainItemsLoadingIndicator();
             });
         }, {
             root: itemsContainer,
@@ -1127,6 +1176,7 @@
         });
 
         mainItemsObserver.observe(mainItemsSentinel);
+        updateMainItemsLoadingIndicator();
     }
 
     function searchByCode() {
@@ -2846,6 +2896,57 @@
         scroll-behavior: smooth;
     }
 
+    .items-loading-indicator {
+        display: none;
+        flex: 0 0 220px;
+        min-width: 220px;
+        max-width: 220px;
+        height: 180px;
+        align-self: center;
+        margin-right: 8px;
+        border: 1px solid #dbe3ee;
+        border-radius: 10px;
+        background: #f8fafc;
+        color: #334155;
+        justify-content: center;
+        align-items: center;
+        flex-direction: column;
+        gap: 10px;
+        scroll-snap-align: center;
+    }
+
+    .items-loading-indicator .loading-label {
+        font-size: 0.84rem;
+        text-align: center;
+        line-height: 1.3;
+        max-width: 170px;
+    }
+
+    .items-loading-indicator .loading-track {
+        width: 160px;
+        height: 8px;
+        border-radius: 999px;
+        background: #e2e8f0;
+        overflow: hidden;
+    }
+
+    .items-loading-indicator .loading-fill {
+        width: 45%;
+        height: 100%;
+        border-radius: inherit;
+        background: linear-gradient(90deg, #60a5fa, #2563eb);
+        transform: translateX(-100%);
+    }
+
+    .items-loading-indicator.is-loading .loading-fill {
+        animation: items-loader-slide 1.05s ease-in-out infinite;
+    }
+
+    @keyframes items-loader-slide {
+        0% { transform: translateX(-100%); }
+        100% { transform: translateX(260%); }
+    }
+
     .item-card {
         background-color: #fff;
         border: 1px solid #ddd;

Web/templates/main_admin.html

@@ -323,6 +323,57 @@
         scroll-behavior: smooth;
     }
 
+    .items-loading-indicator {
+        display: none;
+        flex: 0 0 220px;
+        min-width: 220px;
+        max-width: 220px;
+        height: 180px;
+        align-self: center;
+        margin-right: 8px;
+        border: 1px solid #dbe3ee;
+        border-radius: 10px;
+        background: #f8fafc;
+        color: #334155;
+        justify-content: center;
+        align-items: center;
+        flex-direction: column;
+        gap: 10px;
+        scroll-snap-align: center;
+    }
+
+    .items-loading-indicator .loading-label {
+        font-size: 0.84rem;
+        text-align: center;
+        line-height: 1.3;
+        max-width: 170px;
+    }
+
+    .items-loading-indicator .loading-track {
+        width: 160px;
+        height: 8px;
+        border-radius: 999px;
+        background: #e2e8f0;
+        overflow: hidden;
+    }
+
+    .items-loading-indicator .loading-fill {
+        width: 45%;
+        height: 100%;
+        border-radius: inherit;
+        background: linear-gradient(90deg, #60a5fa, #2563eb);
+        transform: translateX(-100%);
+    }
+
+    .items-loading-indicator.is-loading .loading-fill {
+        animation: items-loader-slide 1.05s ease-in-out infinite;
+    }
+
+    @keyframes items-loader-slide {
+        0% { transform: translateX(-100%); }
+        100% { transform: translateX(260%); }
+    }
+
     .item-card {
         background-color: #fff;
         border: 1px solid #ddd;
@@ -364,13 +415,17 @@
     }
 
     .bulk-delete-row {
-        display: flex;
+        display: none;
         justify-content: flex-start;
         align-items: center;
         margin-bottom: 8px;
         gap: 8px;
     }
 
+    .bulk-delete-mode-active .bulk-delete-row {
+        display: flex;
+    }
+
     .bulk-delete-toggle {
         display: inline-flex;
         align-items: center;
@@ -2966,9 +3021,9 @@ document.addEventListener('DOMContentLoaded', ()=>{
                 if (parsedFilters.filter3) activeFilters.filter3 = parsedFilters.filter3;
                 
                 // Update UI to show selected filters
-                updateSelectedFilters(1);
-                updateSelectedFilters(2);
-                updateSelectedFilters(3);
+                updateSelectedFiltersDisplay(1);
+                updateSelectedFiltersDisplay(2);
+                updateSelectedFiltersDisplay(3);
                 
                 // We'll rebuild Filter 3 options after items are loaded
             } catch (e) {
@@ -3005,6 +3060,7 @@ document.addEventListener('DOMContentLoaded', ()=>{
         bulkDeleteDrawerOpen = Boolean(open);
         const drawer = document.getElementById('bulk-delete-drawer');
         const toggle = document.getElementById('bulk-delete-drawer-toggle');
+        const itemsContainer = document.querySelector('#items-container');
         if (drawer) {
             drawer.classList.toggle('open', bulkDeleteDrawerOpen);
             drawer.setAttribute('aria-hidden', bulkDeleteDrawerOpen ? 'false' : 'true');
@@ -3014,6 +3070,10 @@ document.addEventListener('DOMContentLoaded', ()=>{
             toggle.innerHTML = bulkDeleteDrawerOpen ? '<span class="drawer-icon">✕</span>' : '<span class="drawer-icon">⚙</span>';
             toggle.title = bulkDeleteDrawerOpen ? 'Massenlöschung schließen' : 'Massenlöschung öffnen';
         }
+        // Toggle checkbox visibility: show checkboxes only when bulk delete mode is active
+        if (itemsContainer) {
+            itemsContainer.classList.toggle('bulk-delete-mode-active', bulkDeleteDrawerOpen);
+        }
     }
 
     function toggleBulkDeleteDrawer() {
@@ -3259,9 +3319,46 @@ document.addEventListener('DOMContentLoaded', ()=>{
     let mainAdminItemsNextOffset = 0;
     let mainAdminItemsHasMore = false;
     let mainAdminItemsLoadingMore = false;
+    let mainAdminLightMode = true;  // Track if we're in light mode to gradually request full data
     let mainAdminItemsObserver = null;
     let mainAdminItemsSentinel = null;
+    let mainAdminItemsLoadingIndicator = null;
     let mainAdminItemsScrollPrefetchBound = false;
+    let totalItemsInSystem = 0;
+
+    function ensureMainAdminItemsLoadingIndicator() {
+        const itemsContainer = document.querySelector('#items-container');
+        if (!itemsContainer) return null;
+
+        if (!mainAdminItemsLoadingIndicator) {
+            mainAdminItemsLoadingIndicator = document.createElement('div');
+            mainAdminItemsLoadingIndicator.id = 'main-admin-items-loading-indicator';
+            mainAdminItemsLoadingIndicator.className = 'items-loading-indicator';
+            mainAdminItemsLoadingIndicator.innerHTML = `
+                <div class="loading-track"><div class="loading-fill"></div></div>
+                <div class="loading-label">Weitere Objekte werden vorbereitet...</div>
+            `;
+        }
+
+        itemsContainer.appendChild(mainAdminItemsLoadingIndicator);
+        return itemsContainer;
+    }
+
+    function updateMainAdminItemsLoadingIndicator() {
+        const itemsContainer = ensureMainAdminItemsLoadingIndicator();
+        if (!itemsContainer || !mainAdminItemsLoadingIndicator) return;
+
+        const shouldShow = mainAdminItemsHasMore || mainAdminItemsLoadingMore;
+        mainAdminItemsLoadingIndicator.style.display = shouldShow ? 'flex' : 'none';
+        mainAdminItemsLoadingIndicator.classList.toggle('is-loading', mainAdminItemsLoadingMore);
+
+        const label = mainAdminItemsLoadingIndicator.querySelector('.loading-label');
+        if (label) {
+            label.textContent = mainAdminItemsLoadingMore
+                ? 'Weitere Objekte werden geladen...'
+                : 'Weitere Objekte werden vorbereitet...';
+        }
+    }
 
     function maybePrefetchMainAdminItems() {
         const itemsContainer = document.querySelector('#items-container');
@@ -3276,13 +3373,18 @@ document.addEventListener('DOMContentLoaded', ()=>{
         }
 
         mainAdminItemsLoadingMore = true;
+        updateMainAdminItemsLoadingIndicator();
         loadItems(mainAdminItemsNextOffset, true).finally(() => {
             mainAdminItemsLoadingMore = false;
+            updateMainAdminItemsLoadingIndicator();
         });
     }
 
     function loadItems(offset = 0, append = false) {
-        return fetch(`{{ url_for('get_items') }}?offset=${offset}&limit=${MAIN_ADMIN_ITEMS_PAGE_SIZE}`)
+        // Für Pages nach der ersten: Explizit vollständige Daten laden (light_mode=false)
+        // Erste Page: light_mode wird automatisch enablet
+        const lightModeParam = offset > 0 ? '&light_mode=false' : '';
+        return fetch(`{{ url_for('get_items') }}?offset=${offset}&limit=${MAIN_ADMIN_ITEMS_PAGE_SIZE}${lightModeParam}`)
             .then(response => response.json())
             .then(data => {
                 const itemsContainer = document.querySelector('#items-container');
@@ -3294,6 +3396,7 @@ document.addEventListener('DOMContentLoaded', ()=>{
                 const filter3Values = new Set();
                 const pageItems = data.items || [];
                 allItems = append ? allItems.concat(pageItems) : pageItems;
+                totalItemsInSystem = Number(data.total || totalItemsInSystem || pageItems.length || 0);
                 if (!append) {
                     itemsContainer.innerHTML = '';
                 }
@@ -3310,9 +3413,7 @@ document.addEventListener('DOMContentLoaded', ()=>{
                     return;
                 }
                 if (itemsIndicator) {
-                    const shownCount = allItems.length;
-                    const totalCount = Number(data.total || shownCount);
-                    itemsIndicator.textContent = `Objekte im System: ${shownCount}${data.has_more ? ` / ${totalCount} (lädt...)` : ''}`;
+                    itemsIndicator.textContent = `Objekte im System: ${totalItemsInSystem}${data.has_more ? ' (lädt...)' : ''}`;
                 }
                 pageItems.sort((a, b) => {
                     const nameA = a.Name ? a.Name.toLowerCase() : '';
@@ -3582,11 +3683,15 @@ document.addEventListener('DOMContentLoaded', ()=>{
 
                 mainAdminItemsNextOffset = (data.offset || offset) + (data.count || pageItems.length);
                 mainAdminItemsHasMore = Boolean(data.has_more);
+                updateMainAdminItemsLoadingIndicator();
                 setupMainAdminItemsLazyLoading();
                 maybePrefetchMainAdminItems();
             })
             .catch(error => {
                 console.error('Error fetching items:', error);
+                mainAdminItemsLoadingMore = false;
+                mainAdminItemsHasMore = false;
+                updateMainAdminItemsLoadingIndicator();
                 if (append) {
                     return;
                 }
@@ -3604,6 +3709,8 @@ document.addEventListener('DOMContentLoaded', ()=>{
         const itemsContainer = document.querySelector('#items-container');
         if (!itemsContainer) return null;
 
+        ensureMainAdminItemsLoadingIndicator();
+
         if (!mainAdminItemsSentinel) {
             mainAdminItemsSentinel = document.createElement('div');
             mainAdminItemsSentinel.id = 'main-admin-items-sentinel';
@@ -3644,8 +3751,10 @@ document.addEventListener('DOMContentLoaded', ()=>{
             }
 
             mainAdminItemsLoadingMore = true;
+            updateMainAdminItemsLoadingIndicator();
             loadItems(mainAdminItemsNextOffset, true).finally(() => {
                 mainAdminItemsLoadingMore = false;
+                updateMainAdminItemsLoadingIndicator();
             });
         }, {
             root: itemsContainer,
@@ -3654,6 +3763,7 @@ document.addEventListener('DOMContentLoaded', ()=>{
         });
 
         mainAdminItemsObserver.observe(mainAdminItemsSentinel);
+        updateMainAdminItemsLoadingIndicator();
     }
 
     function searchByCode() {
@@ -3750,7 +3860,7 @@ document.addEventListener('DOMContentLoaded', ()=>{
         });
 
         if (itemsIndicator) {
-            itemsIndicator.textContent = `Objekte im System: ${allItems.length} | Angezeigt: ${visibleCount}`;
+            itemsIndicator.textContent = `Objekte im System: ${totalItemsInSystem || allItems.length} | Angezeigt: ${visibleCount}`;
         }
         
         if (isCodeSearch && visibleCount > 0 && (codeMatchCount > 0 || exactMatchCount > 0)) {