refactor: reduce menu bar rerenders (#7589)

* reduce menu bar rerenders

* imports cleanup

* [autofix.ci] apply automated fixes

---------

Co-authored-by: autofix-ci[bot] <114827586+autofix-ci[bot]@users.noreply.github.com>

src/frontend/src/components/core/appHeaderComponent/components/FlowMenu/index.tsx

@@ -4,7 +4,6 @@ import { useCustomNavigate } from "@/customization/hooks/use-custom-navigate";
 import useAddFlow from "@/hooks/flows/use-add-flow";
 import useSaveFlow from "@/hooks/flows/use-save-flow";
 import useUploadFlow from "@/hooks/flows/use-upload-flow";
-import { customStringify } from "@/utils/reactflowUtils";
 import { useHotkeys } from "react-hotkeys-hook";
 
 import IconComponent from "@/components/common/genericIconComponent";
@@ -22,6 +21,7 @@ import { UPLOAD_ERROR_ALERT } from "@/constants/alerts_constants";
 import { SAVED_HOVER } from "@/constants/constants";
 import { useGetRefreshFlowsQuery } from "@/controllers/API/queries/flows/use-get-refresh-flows-query";
 import { useGetFoldersQuery } from "@/controllers/API/queries/folders/use-get-folders";
+import { useUnsavedChanges } from "@/hooks/useUnsavedChanges";
 import ExportModal from "@/modals/exportModal";
 import FlowLogsModal from "@/modals/flowLogsModal";
 import FlowSettingsModal from "@/modals/flowSettingsModal";
@@ -33,6 +33,7 @@ import { useShortcutsStore } from "@/stores/shortcuts";
 import { swatchColors } from "@/utils/styleUtils";
 import { cn, getNumberFromString } from "@/utils/utils";
 import { useQueryClient } from "@tanstack/react-query";
+import { useShallow } from "zustand/react/shallow";
 
 export const MenuBar = ({}: {}): JSX.Element => {
   const shortcuts = useShortcutsStore((state) => state.shortcuts);
@@ -50,18 +51,36 @@ export const MenuBar = ({}: {}): JSX.Element => {
   const saveFlow = useSaveFlow();
   const queryClient = useQueryClient();
   const autoSaving = useFlowsManagerStore((state) => state.autoSaving);
-  const currentFlow = useFlowStore((state) => state.currentFlow);
+  const {
-  const currentSavedFlow = useFlowsManagerStore((state) => state.currentFlow);
+    currentFlowName,
-  const updatedAt = currentSavedFlow?.updated_at;
+    currentFlowId,
+    currentFlowFolderId,
+    currentFlowIcon,
+    currentFlowGradient,
+  } = useFlowStore(
+    useShallow((state) => ({
+      currentFlowName: state.currentFlow?.name,
+      currentFlowId: state.currentFlow?.id,
+      currentFlowFolderId: state.currentFlow?.folder_id,
+      currentFlowIcon: state.currentFlow?.icon,
+      currentFlowGradient: state.currentFlow?.gradient,
+    })),
+  );
+  const { updated_at: updatedAt } = useFlowsManagerStore(
+    useShallow((state) => ({
+      updated_at: state.currentFlow?.updated_at,
+    })),
+  );
   const onFlowPage = useFlowStore((state) => state.onFlowPage);
   const setCurrentFlow = useFlowsManagerStore((state) => state.setCurrentFlow);
   const stopBuilding = useFlowStore((state) => state.stopBuilding);
   const [editingName, setEditingName] = useState(false);
-  const [flowName, setFlowName] = useState(currentFlow?.name ?? "");
+  const [flowName, setFlowName] = useState(currentFlowName ?? "");
   const [isInvalidName, setIsInvalidName] = useState(false);
   const nameInputRef = useRef<HTMLInputElement>(null);
   const [inputWidth, setInputWidth] = useState<number>(0);
   const measureRef = useRef<HTMLSpanElement>(null);
+  const changesNotSaved = useUnsavedChanges();
 
   const { data: folders, isFetched: isFoldersFetched } = useGetFoldersQuery();
   const flows = useFlowsManagerStore((state) => state.flows);
@@ -73,9 +92,9 @@ export const MenuBar = ({}: {}): JSX.Element => {
       flows.forEach((flow) => {
         tempNameList.push(flow.name);
       });
-      setNameList(tempNameList.filter((name) => name !== currentFlow?.name));
+      setNameList(tempNameList.filter((name) => name !== currentFlowName));
     }
-  }, [flows, currentFlow?.name]);
+  }, [flows, currentFlowName]);
 
   useGetRefreshFlowsQuery(
     {
@@ -86,13 +105,10 @@ export const MenuBar = ({}: {}): JSX.Element => {
   );
 
   const currentFolder = useMemo(
-    () => folders?.find((f) => f.id === currentFlow?.folder_id),
+    () => folders?.find((f) => f.id === currentFlowFolderId),
-    [folders, currentFlow?.folder_id],
+    [folders, currentFlowFolderId],
   );
 
-  const changesNotSaved =
-    customStringify(currentFlow) !== customStringify(currentSavedFlow);
-
   useEffect(() => {
     if (measureRef.current) {
       setInputWidth(measureRef.current.offsetWidth);
@@ -163,26 +179,29 @@ export const MenuBar = ({}: {}): JSX.Element => {
     (e: React.KeyboardEvent<HTMLInputElement>) => {
       if (e.key === "Escape") {
         setEditingName(false);
-        setFlowName(currentFlow?.name ?? "");
+        setFlowName(currentFlowName ?? "");
         setIsInvalidName(false);
       }
       if (e.key === "Enter") {
         nameInputRef.current?.blur();
       }
     },
-    [currentFlow?.name],
+    [currentFlowName],
   );
 
   const handleNameSubmit = useCallback(() => {
     if (
       flowName.trim() !== "" &&
-      flowName !== currentFlow?.name &&
+      flowName !== currentFlowName &&
       !isInvalidName
     ) {
+      // Get a one-time snapshot of currentFlow using get()
+      const currentFlowSnapshot = useFlowStore.getState().currentFlow;
+
       const newFlow = {
-        ...currentFlow!,
+        ...currentFlowSnapshot!,
         name: flowName,
-        id: currentFlow!.id,
+        id: currentFlowId!,
       };
       setCurrentFlow(newFlow);
       saveFlow(newFlow)
@@ -194,22 +213,23 @@ export const MenuBar = ({}: {}): JSX.Element => {
             title: "Error updating flow name",
             list: [(error as Error).message],
           });
-          setFlowName(currentFlow?.name ?? "");
+          setFlowName(currentFlowName ?? "");
         });
     } else if (isInvalidName) {
       setErrorData({
         title: "Invalid flow name",
         list: ["Name already exists"],
       });
-      setFlowName(currentFlow?.name ?? "");
+      setFlowName(currentFlowName ?? "");
     } else {
-      setFlowName(currentFlow?.name ?? "");
+      setFlowName(currentFlowName ?? "");
     }
     setEditingName(false);
     setIsInvalidName(false);
   }, [
     flowName,
-    currentFlow,
+    currentFlowName,
+    currentFlowId,
     setCurrentFlow,
     saveFlow,
     setSuccessData,
@@ -218,10 +238,10 @@ export const MenuBar = ({}: {}): JSX.Element => {
   ]);
 
   useEffect(() => {
-    if (currentFlow && !editingName) {
+    if (currentFlowName && !editingName) {
-      setFlowName(currentFlow.name);
+      setFlowName(currentFlowName);
     }
-  }, [currentFlow, editingName]);
+  }, [currentFlowName, editingName]);
 
   useEffect(() => {
     if (measureRef.current) {
@@ -230,12 +250,12 @@ export const MenuBar = ({}: {}): JSX.Element => {
   }, [flowName]);
 
   const swatchIndex =
-    (currentFlow?.gradient && !isNaN(parseInt(currentFlow?.gradient))
+    (currentFlowGradient && !isNaN(parseInt(currentFlowGradient))
-      ? parseInt(currentFlow?.gradient)
+      ? parseInt(currentFlowGradient)
-      : getNumberFromString(currentFlow?.gradient ?? currentFlow?.id ?? "")) %
+      : getNumberFromString(currentFlowGradient ?? currentFlowId ?? "")) %
     swatchColors.length;
 
-  return currentFlow && onFlowPage ? (
+  return currentFlowName && onFlowPage ? (
     <div
       className="flex w-full items-center justify-center gap-2"
       data-testid="menu_bar_wrapper"
@@ -270,7 +290,7 @@ export const MenuBar = ({}: {}): JSX.Element => {
       </div>
       <div className={cn(`flex rounded p-1`, swatchColors[swatchIndex])}>
         <IconComponent
-          name={currentFlow?.icon ?? "Workflow"}
+          name={currentFlowIcon ?? "Workflow"}
           className="h-3.5 w-3.5"
         />
       </div>
@@ -305,7 +325,7 @@ export const MenuBar = ({}: {}): JSX.Element => {
                 onKeyDown={handleKeyDown}
                 onFocus={() => {
                   setEditingName(true);
-                  setFlowName(currentFlow.name);
+                  setFlowName(currentFlowName);
                 }}
                 onBlur={handleNameSubmit}
                 value={flowName}

src/frontend/src/hooks/useUnsavedChanges.ts

@@ -0,0 +1,18 @@
+import useFlowStore from "../stores/flowStore";
+import useFlowsManagerStore from "../stores/flowsManagerStore";
+import { customStringify } from "../utils/reactflowUtils";
+
+export function useUnsavedChanges() {
+  const currentFlow = useFlowStore((state) => state.currentFlow);
+  const savedFlow = useFlowsManagerStore((state) => state.currentFlow);
+
+  if (!currentFlow || !savedFlow) {
+    return false;
+  }
+
+  if ((currentFlow?.data?.nodes?.length ?? 0) > 0) {
+    return false;
+  }
+
+  return customStringify(currentFlow) !== customStringify(savedFlow);
+}

src/frontend/src/modals/flowSettingsModal/index.tsx

@@ -18,8 +18,12 @@ export default function FlowSettingsModal({
   flowData,
   details,
 }: FlowSettingsPropsType): JSX.Element {
+  if (!open) return <></>;
+
   const saveFlow = useSaveFlow();
-  const currentFlow = useFlowStore((state) => state.currentFlow);
+  const currentFlow = useFlowStore((state) =>
+    flowData ? undefined : state.currentFlow,
+  );
   const setCurrentFlow = useFlowStore((state) => state.setCurrentFlow);
   const setSuccessData = useAlertStore((state) => state.setSuccessData);
   const flows = useFlowsManagerStore((state) => state.flows);