feat(ItemsList): add item content validation and improve row management logic

src/components/ItemsList.tsx

@@ -210,6 +210,13 @@ async function fetchWikidataSuggestions(query: string): Promise<WikidataSuggesti
   }
 }
 
+// Helper function to check if an item has content
+function itemHasContent(item: Item): boolean {
+  return item.name.trim() !== '' || 
+         item.description.trim() !== '' || 
+         Object.values(item.customProperties).some(prop => prop.trim() !== '');
+}
+
 export function ItemsList({ url }: ItemsListProps) {
   const queryClient = useQueryClient();
   
@@ -249,7 +256,22 @@ export function ItemsList({ url }: ItemsListProps) {
         };
         setItems([emptyItem]);
       } else {
-        setItems(loadedItems);
+        // Check if we need to add an empty row at the end
+        const lastItem = loadedItems[loadedItems.length - 1];
+        const needsEmptyRow = itemHasContent(lastItem);
+        
+        if (needsEmptyRow) {
+          const emptyItem: Item = {
+            id: uuidv4(),
+            name: '',
+            description: '',
+            wikidataId: undefined,
+            customProperties: {}
+          };
+          setItems([...loadedItems, emptyItem]);
+        } else {
+          setItems(loadedItems);
+        }
       }
       
       // Set selected properties
@@ -283,8 +305,10 @@ export function ItemsList({ url }: ItemsListProps) {
   // Mutations
   const saveItemMutation = useMutation({
     mutationFn: (item: Item) => saveItemToDb(url, item),
-    onSuccess: () => {
-      queryClient.invalidateQueries({ queryKey: ['items', url] });
+    // REMOVED: onSuccess invalidation that was causing the issue
+    onError: (error) => {
+      console.error('Failed to save item:', error);
+      // You could add a toast notification here
     }
   });
 
@@ -312,6 +336,9 @@ export function ItemsList({ url }: ItemsListProps) {
       const newItems = [...prevItems];
       const item = { ...newItems[index] };
       
+      // Store the previous state of the item to check if it was empty before
+      const wasEmpty = !itemHasContent(item);
+      
       if (field === 'name') {
         item.name = value;
         // Fetch Wikidata suggestions only if value is not empty
@@ -344,53 +371,36 @@ export function ItemsList({ url }: ItemsListProps) {
       
       newItems[index] = item;
       
-      // Only save if the item has some content
-      const hasContent = item.name.trim() || 
-                        item.description.trim() || 
-                        Object.values(item.customProperties).some(prop => prop.trim());
+      // Check if the item now has content after the update
+      const nowHasContent = itemHasContent(item);
       
-      if (hasContent) {
+      // Only save if the item has some content
+      if (nowHasContent) {
         // Auto-save with error handling
-        saveItemMutation.mutate(item, {
-          onError: (error) => {
-            console.error('Failed to save item:', error);
-            // You could add a toast notification here
-          },
-          onSuccess: () => {
-            // After successful save, reload items to get any synchronized properties
-            // This ensures that if another item with the same name exists, 
-            // its properties are updated in the UI
-            queryClient.invalidateQueries({ queryKey: ['items', url] });
-          }
-        });
+        saveItemMutation.mutate(item);
       }
       
-      // Add new row if editing last row and value is not empty
-      // Only add if the last item doesn't already have content and we're not already at the end
-      if (index === newItems.length - 1 && value.trim()) {
-        const lastItem = newItems[newItems.length - 1];
-        const lastItemHasContent = lastItem.name.trim() || 
-                                  lastItem.description.trim() || 
-                                  Object.values(lastItem.customProperties).some(prop => prop.trim());
-        
-        if (lastItemHasContent) {
-          const newItem: Item = {
-            id: uuidv4(),
-            name: '',
-            description: '',
-            wikidataId: undefined,
-            customProperties: {}
-          };
-          newItems.push(newItem);
-          
-          // Don't auto-save empty items immediately
-          // They will be saved when user starts typing
-        }
+      // Add new row logic: only add if we're editing the last item AND
+      // the item transitioned from empty to having content
+      const isLastItem = index === newItems.length - 1;
+      const transitionedToContent = wasEmpty && nowHasContent;
+      
+      if (isLastItem && transitionedToContent) {
+        // Add a new empty row
+        const newItem: Item = {
+          id: uuidv4(),
+          name: '',
+          description: '',
+          wikidataId: undefined,
+          customProperties: {}
+        };
+        newItems.push(newItem);
+        console.log('Added new empty row after item got content');
       }
       
       return newItems;
     });
-  }, [saveItemMutation, queryClient, url]);
+  }, [saveItemMutation]);
 
   const removeItem = useCallback((index: number) => {
     const itemId = items[index].id;
@@ -414,7 +424,7 @@ export function ItemsList({ url }: ItemsListProps) {
     })));
   }, [deletePropertyMutation]);
 
-    const fetchPropertyLabelsHelper = useCallback(async (propertyIds: string[]): Promise<Record<string, string>> => {
+  const fetchPropertyLabelsHelper = useCallback(async (propertyIds: string[]): Promise<Record<string, string>> => {
     const labels = await fetchPropertyLabels(propertyIds);
     setPropertyLabels(prev => ({ ...prev, ...labels }));
     return labels;
@@ -527,7 +537,7 @@ export function ItemsList({ url }: ItemsListProps) {
     }
     
     console.log('Property addition completed:', normalizedProperty);
-  }, [selectedProperties, propertyLabels, items, propertyCache, url]);
+  }, [customProperties, propertyLabels, items, propertyCache, url]);
 
   const handleWikidataSelect = useCallback(async (suggestion: WikidataSuggestion, itemId: string) => {
     console.log('Wikidata selection for item:', itemId, suggestion);