fix file batch deletion

static/js/rooms/fileManager.js

@@ -227,6 +227,16 @@ export class FileManager {
             return;
         }
 
+        // Filter out folders and get only file IDs
+        const fileIds = selectedItems
+            .filter(item => item.type !== 'folder')
+            .map(item => item.id);
+
+        if (fileIds.length === 0) {
+            console.log('[FileManager] No files to download (only folders selected)');
+            return;
+        }
+
         try {
             const response = await fetch(`/api/rooms/${this.roomManager.roomId}/files/download`, {
                 method: 'POST',
@@ -234,7 +244,7 @@ export class FileManager {
                     'Content-Type': 'application/json',
                     'X-CSRF-Token': document.querySelector('meta[name="csrf-token"]').getAttribute('content')
                 },
-                body: JSON.stringify({ file_ids: selectedItems.map(item => item.id) })
+                body: JSON.stringify({ file_ids: fileIds })
             });
             console.log('[FileManager] Download response status:', response.status);
             
@@ -256,6 +266,7 @@ export class FileManager {
             console.log('[FileManager] Download initiated');
         } catch (error) {
             console.error('[FileManager] Error downloading files:', error);
+            document.getElementById('fileError').textContent = 'Failed to download files. Please try again.';
             throw error;
         }
     }
@@ -322,14 +333,63 @@ export class FileManager {
         }
     }
     
+    updateSelection(index, event) {
+        console.log('[FileManager] Updating selection:', { index, event });
+        
+        // Prevent selection if clicking on a checkbox or action button
+        if (event.target.classList.contains('select-item-checkbox') || event.target.closest('.file-action-btn')) {
+            return;
+        }
+
+        const checkboxes = document.querySelectorAll('.select-item-checkbox');
+        const checkbox = checkboxes[index];
+        if (!checkbox) return;
+
+        if (event.ctrlKey) {
+            // CTRL + Click: Toggle individual selection
+            checkbox.checked = !checkbox.checked;
+            if (checkbox.checked) {
+                this.selectedItems.add(index);
+            } else {
+                this.selectedItems.delete(index);
+            }
+        } else if (event.shiftKey && this.lastSelectedIndex !== -1) {
+            // SHIFT + Click: Select range
+            const start = Math.min(this.lastSelectedIndex, index);
+            const end = Math.max(this.lastSelectedIndex, index);
+            for (let i = start; i <= end; i++) {
+                checkboxes[i].checked = true;
+                this.selectedItems.add(i);
+            }
+        } else {
+            // Normal click: Select single item
+            const wasChecked = checkbox.checked;
+            checkboxes.forEach(cb => {
+                cb.checked = false;
+                this.selectedItems.delete(parseInt(cb.dataset.index));
+            });
+            checkbox.checked = !wasChecked;
+            if (!wasChecked) {
+                this.selectedItems.add(index);
+            }
+        }
+
+        this.lastSelectedIndex = index;
+        this.roomManager.viewManager.updateMultiSelectUI();
+    }
+    
     getSelectedItems() {
         console.log('[FileManager] Getting selected items');
         return Array.from(this.selectedItems).map(index => this.currentFiles[index]);
     }
     
-    updateSelection(index, event) {
-        console.log('[FileManager] Updating selection:', { index, event });
-        // Implementation of selection logic
+    clearSelection() {
+        console.log('[FileManager] Clearing selection');
+        this.selectedItems.clear();
+        this.lastSelectedIndex = -1;
+        const checkboxes = document.querySelectorAll('.select-item-checkbox');
+        checkboxes.forEach(cb => cb.checked = false);
+        this.roomManager.viewManager.updateMultiSelectUI();
     }
     
     navigateToParent() {