Fix duplicate info messages for extension updates (#9760)

packages/cli/src/config/extensions/update.ts

@@ -143,17 +143,17 @@ export async function checkForAllExtensionUpdates(
   >,
   cwd: string = process.cwd(),
 ): Promise<Map<string, ExtensionUpdateState>> {
+  let newStates: Map<string, ExtensionUpdateState> = new Map(
+    extensionsUpdateState,
+  );
   for (const extension of extensions) {
     const initialState = extensionsUpdateState.get(extension.name);
     if (initialState === undefined) {
       if (!extension.installMetadata) {
         setExtensionsUpdateState((prev) => {
-          extensionsUpdateState = new Map(prev);
-          extensionsUpdateState.set(
-            extension.name,
-            ExtensionUpdateState.NOT_UPDATABLE,
-          );
-          return extensionsUpdateState;
+          newStates = new Map(prev);
+          newStates.set(extension.name, ExtensionUpdateState.NOT_UPDATABLE);
+          return newStates;
         });
         continue;
       }
@@ -161,14 +161,14 @@ export async function checkForAllExtensionUpdates(
         extension,
         (updatedState) => {
           setExtensionsUpdateState((prev) => {
-            extensionsUpdateState = new Map(prev);
-            extensionsUpdateState.set(extension.name, updatedState);
-            return extensionsUpdateState;
+            newStates = new Map(prev);
+            newStates.set(extension.name, updatedState);
+            return newStates;
           });
         },
         cwd,
       );
     }
   }
-  return extensionsUpdateState;
+  return newStates;
 }

packages/cli/src/ui/hooks/useExtensionUpdates.test.ts

@@ -143,7 +143,7 @@ describe('useExtensionUpdates', () => {
       expect(addItem).toHaveBeenCalledWith(
         {
           type: MessageType.INFO,
-          text: 'Extension test-extension has an update available, run "/extensions update test-extension" to install it.',
+          text: 'You have 1 extension with an update available, run "/extensions list" for more information.',
         },
         expect.any(Number),
       );

packages/cli/src/ui/hooks/useExtensionUpdates.ts

@@ -7,7 +7,7 @@
 import type { GeminiCLIExtension } from '@google/gemini-cli-core';
 import { getErrorMessage } from '../../utils/errors.js';
 import { ExtensionUpdateState } from '../state/extensions.js';
-import { useMemo, useState } from 'react';
+import { useState } from 'react';
 import type { UseHistoryManagerReturn } from './useHistoryManager.js';
 import { MessageType } from '../types.js';
 import {
@@ -24,13 +24,18 @@ export const useExtensionUpdates = (
   const [extensionsUpdateState, setExtensionsUpdateState] = useState(
     new Map<string, ExtensionUpdateState>(),
   );
-  useMemo(() => {
-    const checkUpdates = async () => {
+  const [isChecking, setIsChecking] = useState(false);
+
+  (async () => {
+    if (isChecking) return;
+    setIsChecking(true);
+    try {
       const updateState = await checkForAllExtensionUpdates(
         extensions,
         extensionsUpdateState,
         setExtensionsUpdateState,
       );
+      let extensionsWithUpdatesCount = 0;
       for (const extension of extensions) {
         const prevState = extensionsUpdateState.get(extension.name);
         const currentState = updateState.get(extension.name);
@@ -70,24 +75,24 @@ export const useExtensionUpdates = (
               );
             });
         } else {
-          addItem(
-            {
-              type: MessageType.INFO,
-              text: `Extension ${extension.name} has an update available, run "/extensions update ${extension.name}" to install it.`,
-            },
-            Date.now(),
-          );
+          extensionsWithUpdatesCount++;
         }
       }
-    };
-    checkUpdates();
-  }, [
-    extensions,
-    extensionsUpdateState,
-    setExtensionsUpdateState,
-    addItem,
-    cwd,
-  ]);
+      if (extensionsWithUpdatesCount > 0) {
+        const s = extensionsWithUpdatesCount > 1 ? 's' : '';
+        addItem(
+          {
+            type: MessageType.INFO,
+            text: `You have ${extensionsWithUpdatesCount} extension${s} with an update available, run "/extensions list" for more information.`,
+          },
+          Date.now(),
+        );
+      }
+    } finally {
+      setIsChecking(false);
+    }
+  })();
+
   return {
     extensionsUpdateState,
     setExtensionsUpdateState,