feat(cli): add support for --prompt-interactive/-i flag (#1743)

2 files changed, 78 insertions, 1 deletions

diff --git a/packages/cli/src/ui/App.test.tsx b/packages/cli/src/ui/App.test.tsx
index fffea64d..c64b526e 100644
--- a/packages/cli/src/ui/App.test.tsx
+++ b/packages/cli/src/ui/App.test.tsx
@@ -14,9 +14,12 @@ import {
   ToolRegistry,
   AccessibilitySettings,
   SandboxConfig,
+  GeminiClient,
 } from '@google/gemini-cli-core';
 import { LoadedSettings, SettingsFile, Settings } from '../config/settings.js';
 import process from 'node:process';
+import { useGeminiStream } from './hooks/useGeminiStream.js';
+import { StreamingState } from './types.js';
 import { Tips } from './components/Tips.js';
 
 // Define a more complete mock server config based on actual Config
@@ -67,6 +70,7 @@ interface MockServerConfig {
   getAccessibility: Mock<() => AccessibilitySettings>;
   getProjectRoot: Mock<() => string | undefined>;
   getAllGeminiMdFilenames: Mock<() => string[]>;
+  getGeminiClient: Mock<() => GeminiClient | undefined>;
   getUserTier: Mock<() => Promise<string | undefined>>;
 }
 
@@ -124,7 +128,7 @@ vi.mock('@google/gemini-cli-core', async (importOriginal) => {
         getVertexAI: vi.fn(() => opts.vertexai),
         getShowMemoryUsage: vi.fn(() => opts.showMemoryUsage ?? false),
         getAccessibility: vi.fn(() => opts.accessibility ?? {}),
-        getProjectRoot: vi.fn(() => opts.projectRoot),
+        getProjectRoot: vi.fn(() => opts.targetDir),
         getGeminiClient: vi.fn(() => ({})),
         getCheckpointingEnabled: vi.fn(() => opts.checkpointing ?? true),
         getAllGeminiMdFilenames: vi.fn(() => ['GEMINI.md']),
@@ -508,4 +512,48 @@ describe('App UI', () => {
       expect(lastFrame()).not.toContain('Select Theme');
     });
   });
+
+  describe('with initial prompt from --prompt-interactive', () => {
+    it('should submit the initial prompt automatically', async () => {
+      const mockSubmitQuery = vi.fn();
+
+      mockConfig.getQuestion = vi.fn(() => 'hello from prompt-interactive');
+
+      vi.mocked(useGeminiStream).mockReturnValue({
+        streamingState: StreamingState.Idle,
+        submitQuery: mockSubmitQuery,
+        initError: null,
+        pendingHistoryItems: [],
+        thought: null,
+      });
+
+      mockConfig.getGeminiClient.mockReturnValue({
+        isInitialized: vi.fn(() => true),
+      } as unknown as GeminiClient);
+
+      const { unmount, rerender } = render(
+        <App
+          config={mockConfig as unknown as ServerConfig}
+          settings={mockSettings}
+          version={mockVersion}
+        />,
+      );
+      currentUnmount = unmount;
+
+      // Force a re-render to trigger useEffect
+      rerender(
+        <App
+          config={mockConfig as unknown as ServerConfig}
+          settings={mockSettings}
+          version={mockVersion}
+        />,
+      );
+
+      await new Promise((resolve) => setTimeout(resolve, 0));
+
+      expect(mockSubmitQuery).toHaveBeenCalledWith(
+        'hello from prompt-interactive',
+      );
+    });
+  });
 });
diff --git a/packages/cli/src/ui/App.tsx b/packages/cli/src/ui/App.tsx
index f2324b28..98f7689c 100644
--- a/packages/cli/src/ui/App.tsx
+++ b/packages/cli/src/ui/App.tsx
@@ -148,6 +148,7 @@ const App = ({ config, settings, startupWarnings = [], version }: AppProps) => {
   const openPrivacyNotice = useCallback(() => {
     setShowPrivacyNotice(true);
   }, []);
+  const initialPromptSubmitted = useRef(false);
 
   const errorCount = useMemo(
     () => consoleMessages.filter((msg) => msg.type === 'error').length,
@@ -637,6 +638,34 @@ const App = ({ config, settings, startupWarnings = [], version }: AppProps) => {
     return getAllGeminiMdFilenames();
   }, [settings.merged.contextFileName]);
 
+  const initialPrompt = useMemo(() => config.getQuestion(), [config]);
+  const geminiClient = config.getGeminiClient();
+
+  useEffect(() => {
+    if (
+      initialPrompt &&
+      !initialPromptSubmitted.current &&
+      !isAuthenticating &&
+      !isAuthDialogOpen &&
+      !isThemeDialogOpen &&
+      !isEditorDialogOpen &&
+      !showPrivacyNotice &&
+      geminiClient?.isInitialized?.()
+    ) {
+      submitQuery(initialPrompt);
+      initialPromptSubmitted.current = true;
+    }
+  }, [
+    initialPrompt,
+    submitQuery,
+    isAuthenticating,
+    isAuthDialogOpen,
+    isThemeDialogOpen,
+    isEditorDialogOpen,
+    showPrivacyNotice,
+    geminiClient,
+  ]);
+
   if (quittingMessages) {
     return (
       <Box flexDirection="column" marginBottom={1}>