gemini-cli/packages/cli/src/ui/AppContainer.tsx

/**
 * @license
 * Copyright 2025 Google LLC
 * SPDX-License-Identifier: Apache-2.0
 */

import {
  useMemo,
  useState,
  useCallback,
  useEffect,
  useRef,
  useLayoutEffect,
} from 'react';
import { type DOMElement, measureElement } from 'ink';
import { App } from './App.js';
import { AppContext } from './contexts/AppContext.js';
import { UIStateContext, type UIState } from './contexts/UIStateContext.js';
import {
  UIActionsContext,
  type UIActions,
} from './contexts/UIActionsContext.js';
import { ConfigContext } from './contexts/ConfigContext.js';
import {
  type HistoryItem,
  ToolCallStatus,
  type HistoryItemWithoutId,
  AuthState,
} from './types.js';
import { MessageType, StreamingState } from './types.js';
import {
  type EditorType,
  type Config,
  type IdeInfo,
  type IdeContext,
  type UserTierId,
  DEFAULT_GEMINI_FLASH_MODEL,
  IdeClient,
  ideContextStore,
  getErrorMessage,
  getAllGeminiMdFilenames,
  AuthType,
  clearCachedCredentialFile,
  ShellExecutionService,
} from '@google/gemini-cli-core';
import { validateAuthMethod } from '../config/auth.js';
import { loadHierarchicalGeminiMemory } from '../config/config.js';
import process from 'node:process';
import { useHistory } from './hooks/useHistoryManager.js';
import { useMemoryMonitor } from './hooks/useMemoryMonitor.js';
import { useThemeCommand } from './hooks/useThemeCommand.js';
import { useAuthCommand } from './auth/useAuth.js';
import { useQuotaAndFallback } from './hooks/useQuotaAndFallback.js';
import { useEditorSettings } from './hooks/useEditorSettings.js';
import { useSettingsCommand } from './hooks/useSettingsCommand.js';
import { useModelCommand } from './hooks/useModelCommand.js';
import { useSlashCommandProcessor } from './hooks/slashCommandProcessor.js';
import { useVimMode } from './contexts/VimModeContext.js';
import { useConsoleMessages } from './hooks/useConsoleMessages.js';
import { useTerminalSize } from './hooks/useTerminalSize.js';
import { calculatePromptWidths } from './components/InputPrompt.js';
import { useStdout, useStdin } from 'ink';
import { calculateMainAreaWidth } from './utils/ui-sizing.js';
import ansiEscapes from 'ansi-escapes';
import * as fs from 'node:fs';
import { basename } from 'node:path';
import { computeWindowTitle } from '../utils/windowTitle.js';
import { useTextBuffer } from './components/shared/text-buffer.js';
import { useLogger } from './hooks/useLogger.js';
import { useGeminiStream } from './hooks/useGeminiStream.js';
import { useVim } from './hooks/vim.js';
import { type LoadedSettings, SettingScope } from '../config/settings.js';
import { type InitializationResult } from '../core/initializer.js';
import { useFocus } from './hooks/useFocus.js';
import { useBracketedPaste } from './hooks/useBracketedPaste.js';
import { useKeypress, type Key } from './hooks/useKeypress.js';
import { keyMatchers, Command } from './keyMatchers.js';
import { useLoadingIndicator } from './hooks/useLoadingIndicator.js';
import { useFolderTrust } from './hooks/useFolderTrust.js';
import { useIdeTrustListener } from './hooks/useIdeTrustListener.js';
import { type IdeIntegrationNudgeResult } from './IdeIntegrationNudge.js';
import { appEvents, AppEvent } from '../utils/events.js';
import { type UpdateObject } from './utils/updateCheck.js';
import { setUpdateHandler } from '../utils/handleAutoUpdate.js';
import { ConsolePatcher } from './utils/ConsolePatcher.js';
import { registerCleanup, runExitCleanup } from '../utils/cleanup.js';
import { useMessageQueue } from './hooks/useMessageQueue.js';
import { useAutoAcceptIndicator } from './hooks/useAutoAcceptIndicator.js';
import { useWorkspaceMigration } from './hooks/useWorkspaceMigration.js';
import { useSessionStats } from './contexts/SessionContext.js';
import { useGitBranchName } from './hooks/useGitBranchName.js';
import { useExtensionUpdates } from './hooks/useExtensionUpdates.js';
import { ShellFocusContext } from './contexts/ShellFocusContext.js';

const CTRL_EXIT_PROMPT_DURATION_MS = 1000;
const QUEUE_ERROR_DISPLAY_DURATION_MS = 3000;

function isToolExecuting(pendingHistoryItems: HistoryItemWithoutId[]) {
  return pendingHistoryItems.some((item) => {
    if (item && item.type === 'tool_group') {
      return item.tools.some(
        (tool) => ToolCallStatus.Executing === tool.status,
      );
    }
    return false;
  });
}

interface AppContainerProps {
  config: Config;
  settings: LoadedSettings;
  startupWarnings?: string[];
  version: string;
  initializationResult: InitializationResult;
}

/**
 * The fraction of the terminal width to allocate to the shell.
 * This provides horizontal padding.
 */
const SHELL_WIDTH_FRACTION = 0.89;

/**
 * The number of lines to subtract from the available terminal height
 * for the shell. This provides vertical padding and space for other UI elements.
 */
const SHELL_HEIGHT_PADDING = 10;

export const AppContainer = (props: AppContainerProps) => {
  const { settings, config, initializationResult } = props;
  const historyManager = useHistory();
  useMemoryMonitor(historyManager);
  const [corgiMode, setCorgiMode] = useState(false);
  const [debugMessage, setDebugMessage] = useState<string>('');
  const [quittingMessages, setQuittingMessages] = useState<
    HistoryItem[] | null
  >(null);
  const [showPrivacyNotice, setShowPrivacyNotice] = useState<boolean>(false);
  const [themeError, setThemeError] = useState<string | null>(
    initializationResult.themeError,
  );
  const [isProcessing, setIsProcessing] = useState<boolean>(false);
  const [embeddedShellFocused, setEmbeddedShellFocused] = useState(false);
  const [showDebugProfiler, setShowDebugProfiler] = useState(false);

  const [geminiMdFileCount, setGeminiMdFileCount] = useState<number>(
    initializationResult.geminiMdFileCount,
  );
  const [shellModeActive, setShellModeActive] = useState(false);
  const [modelSwitchedFromQuotaError, setModelSwitchedFromQuotaError] =
    useState<boolean>(false);
  const [historyRemountKey, setHistoryRemountKey] = useState(0);
  const [updateInfo, setUpdateInfo] = useState<UpdateObject | null>(null);
  const [isTrustedFolder, setIsTrustedFolder] = useState<boolean | undefined>(
    config.isTrustedFolder(),
  );

  const [queueErrorMessage, setQueueErrorMessage] = useState<string | null>(
    null,
  );

  const extensions = config.getExtensions();
  const {
    extensionsUpdateState,
    extensionsUpdateStateInternal,
    dispatchExtensionStateUpdate,
    confirmUpdateExtensionRequests,
    addConfirmUpdateExtensionRequest,
  } = useExtensionUpdates(
    extensions,
    historyManager.addItem,
    config.getWorkingDir(),
  );

  const [isPermissionsDialogOpen, setPermissionsDialogOpen] = useState(false);
  const openPermissionsDialog = useCallback(
    () => setPermissionsDialogOpen(true),
    [],
  );
  const closePermissionsDialog = useCallback(
    () => setPermissionsDialogOpen(false),
    [],
  );

  const toggleDebugProfiler = useCallback(
    () => setShowDebugProfiler((prev) => !prev),
    [],
  );

  // Helper to determine the effective model, considering the fallback state.
  const getEffectiveModel = useCallback(() => {
    if (config.isInFallbackMode()) {
      return DEFAULT_GEMINI_FLASH_MODEL;
    }
    return config.getModel();
  }, [config]);

  const [currentModel, setCurrentModel] = useState(getEffectiveModel());

  const [userTier, setUserTier] = useState<UserTierId | undefined>(undefined);

  const [isConfigInitialized, setConfigInitialized] = useState(false);

  const logger = useLogger(config.storage);
  const [userMessages, setUserMessages] = useState<string[]>([]);

  // Terminal and layout hooks
  const { columns: terminalWidth, rows: terminalHeight } = useTerminalSize();
  const { stdin, setRawMode } = useStdin();
  const { stdout } = useStdout();

  // Additional hooks moved from App.tsx
  const { stats: sessionStats } = useSessionStats();
  const branchName = useGitBranchName(config.getTargetDir());

  // Layout measurements
  const mainControlsRef = useRef<DOMElement>(null);
  // For performance profiling only
  const rootUiRef = useRef<DOMElement>(null);
  const originalTitleRef = useRef(
    computeWindowTitle(basename(config.getTargetDir())),
  );
  const lastTitleRef = useRef<string | null>(null);
  const staticExtraHeight = 3;

  useEffect(() => {
    (async () => {
      // Note: the program will not work if this fails so let errors be
      // handled by the global catch.
      await config.initialize();
      setConfigInitialized(true);
    })();
    registerCleanup(async () => {
      const ideClient = await IdeClient.getInstance();
      await ideClient.disconnect();
    });
  }, [config]);

  useEffect(
    () => setUpdateHandler(historyManager.addItem, setUpdateInfo),
    [historyManager.addItem],
  );

  // Watch for model changes (e.g., from Flash fallback)
  useEffect(() => {
    const checkModelChange = () => {
      const effectiveModel = getEffectiveModel();
      if (effectiveModel !== currentModel) {
        setCurrentModel(effectiveModel);
      }
    };

    checkModelChange();
    const interval = setInterval(checkModelChange, 1000); // Check every second

    return () => clearInterval(interval);
  }, [config, currentModel, getEffectiveModel]);

  const {
    consoleMessages,
    handleNewMessage,
    clearConsoleMessages: clearConsoleMessagesState,
  } = useConsoleMessages();

  useEffect(() => {
    const consolePatcher = new ConsolePatcher({
      onNewMessage: handleNewMessage,
      debugMode: config.getDebugMode(),
    });
    consolePatcher.patch();
    registerCleanup(consolePatcher.cleanup);
  }, [handleNewMessage, config]);

  const mainAreaWidth = calculateMainAreaWidth(terminalWidth, settings);
  // Derive widths for InputPrompt using shared helper
  const { inputWidth, suggestionsWidth } = useMemo(() => {
    const { inputWidth, suggestionsWidth } =
      calculatePromptWidths(mainAreaWidth);
    return { inputWidth, suggestionsWidth };
  }, [mainAreaWidth]);

  const staticAreaMaxItemHeight = Math.max(terminalHeight * 4, 100);

  const isValidPath = useCallback((filePath: string): boolean => {
    try {
      return fs.existsSync(filePath) && fs.statSync(filePath).isFile();
    } catch (_e) {
      return false;
    }
  }, []);

  const buffer = useTextBuffer({
    initialText: '',
    viewport: { height: 10, width: inputWidth },
    stdin,
    setRawMode,
    isValidPath,
    shellModeActive,
  });

  useEffect(() => {
    const fetchUserMessages = async () => {
      const pastMessagesRaw = (await logger?.getPreviousUserMessages()) || [];
      const currentSessionUserMessages = historyManager.history
        .filter(
          (item): item is HistoryItem & { type: 'user'; text: string } =>
            item.type === 'user' &&
            typeof item.text === 'string' &&
            item.text.trim() !== '',
        )
        .map((item) => item.text)
        .reverse();
      const combinedMessages = [
        ...currentSessionUserMessages,
        ...pastMessagesRaw,
      ];
      const deduplicatedMessages: string[] = [];
      if (combinedMessages.length > 0) {
        deduplicatedMessages.push(combinedMessages[0]);
        for (let i = 1; i < combinedMessages.length; i++) {
          if (combinedMessages[i] !== combinedMessages[i - 1]) {
            deduplicatedMessages.push(combinedMessages[i]);
          }
        }
      }
      setUserMessages(deduplicatedMessages.reverse());
    };
    fetchUserMessages();
  }, [historyManager.history, logger]);

  const refreshStatic = useCallback(() => {
    stdout.write(ansiEscapes.clearTerminal);
    setHistoryRemountKey((prev) => prev + 1);
  }, [setHistoryRemountKey, stdout]);

  const {
    isThemeDialogOpen,
    openThemeDialog,
    handleThemeSelect,
    handleThemeHighlight,
  } = useThemeCommand(
    settings,
    setThemeError,
    historyManager.addItem,
    initializationResult.themeError,
  );

  const { authState, setAuthState, authError, onAuthError } = useAuthCommand(
    settings,
    config,
  );

  const { proQuotaRequest, handleProQuotaChoice } = useQuotaAndFallback({
    config,
    historyManager,
    userTier,
    setAuthState,
    setModelSwitchedFromQuotaError,
  });

  // Derive auth state variables for backward compatibility with UIStateContext
  const isAuthDialogOpen = authState === AuthState.Updating;
  const isAuthenticating = authState === AuthState.Unauthenticated;

  // Create handleAuthSelect wrapper for backward compatibility
  const handleAuthSelect = useCallback(
    async (authType: AuthType | undefined, scope: SettingScope) => {
      if (authType) {
        await clearCachedCredentialFile();
        settings.setValue(scope, 'security.auth.selectedType', authType);

        try {
          await config.refreshAuth(authType);
          setAuthState(AuthState.Authenticated);
        } catch (e) {
          onAuthError(
            `Failed to authenticate: ${e instanceof Error ? e.message : String(e)}`,
          );
          return;
        }

        if (
          authType === AuthType.LOGIN_WITH_GOOGLE &&
          config.isBrowserLaunchSuppressed()
        ) {
          await runExitCleanup();
          console.log(`
----------------------------------------------------------------
Logging in with Google... Please restart Gemini CLI to continue.
----------------------------------------------------------------
          `);
          process.exit(0);
        }
      }
      setAuthState(AuthState.Authenticated);
    },
    [settings, config, setAuthState, onAuthError],
  );

  // Sync user tier from config when authentication changes
  useEffect(() => {
    // Only sync when not currently authenticating
    if (authState === AuthState.Authenticated) {
      setUserTier(config.getUserTier());
    }
  }, [config, authState]);

  // Check for enforced auth type mismatch
  useEffect(() => {
    if (
      settings.merged.security?.auth?.enforcedType &&
      settings.merged.security?.auth.selectedType &&
      settings.merged.security?.auth.enforcedType !==
        settings.merged.security?.auth.selectedType
    ) {
      onAuthError(
        `Authentication is enforced to be ${settings.merged.security?.auth.enforcedType}, but you are currently using ${settings.merged.security?.auth.selectedType}.`,
      );
    } else if (
      settings.merged.security?.auth?.selectedType &&
      !settings.merged.security?.auth?.useExternal
    ) {
      const error = validateAuthMethod(
        settings.merged.security.auth.selectedType,
      );
      if (error) {
        onAuthError(error);
      }
    }
  }, [
    settings.merged.security?.auth?.selectedType,
    settings.merged.security?.auth?.enforcedType,
    settings.merged.security?.auth?.useExternal,
    onAuthError,
  ]);

  const [editorError, setEditorError] = useState<string | null>(null);
  const {
    isEditorDialogOpen,
    openEditorDialog,
    handleEditorSelect,
    exitEditorDialog,
  } = useEditorSettings(settings, setEditorError, historyManager.addItem);

  const { isSettingsDialogOpen, openSettingsDialog, closeSettingsDialog } =
    useSettingsCommand();

  const { isModelDialogOpen, openModelDialog, closeModelDialog } =
    useModelCommand();

  const {
    showWorkspaceMigrationDialog,
    workspaceExtensions,
    onWorkspaceMigrationDialogOpen,
    onWorkspaceMigrationDialogClose,
  } = useWorkspaceMigration(settings);

  const { toggleVimEnabled } = useVimMode();

  const slashCommandActions = useMemo(
    () => ({
      openAuthDialog: () => setAuthState(AuthState.Updating),
      openThemeDialog,
      openEditorDialog,
      openPrivacyNotice: () => setShowPrivacyNotice(true),
      openSettingsDialog,
      openModelDialog,
      openPermissionsDialog,
      quit: (messages: HistoryItem[]) => {
        setQuittingMessages(messages);
        setTimeout(async () => {
          await runExitCleanup();
          process.exit(0);
        }, 100);
      },
      setDebugMessage,
      toggleCorgiMode: () => setCorgiMode((prev) => !prev),
      toggleDebugProfiler,
      dispatchExtensionStateUpdate,
      addConfirmUpdateExtensionRequest,
    }),
    [
      setAuthState,
      openThemeDialog,
      openEditorDialog,
      openSettingsDialog,
      openModelDialog,
      setQuittingMessages,
      setDebugMessage,
      setShowPrivacyNotice,
      setCorgiMode,
      dispatchExtensionStateUpdate,
      openPermissionsDialog,
      addConfirmUpdateExtensionRequest,
      toggleDebugProfiler,
    ],
  );

  const {
    handleSlashCommand,
    slashCommands,
    pendingHistoryItems: pendingSlashCommandHistoryItems,
    commandContext,
    shellConfirmationRequest,
    confirmationRequest,
  } = useSlashCommandProcessor(
    config,
    settings,
    historyManager.addItem,
    historyManager.clearItems,
    historyManager.loadHistory,
    refreshStatic,
    toggleVimEnabled,
    setIsProcessing,
    setGeminiMdFileCount,
    slashCommandActions,
    extensionsUpdateStateInternal,
    isConfigInitialized,
  );

  const performMemoryRefresh = useCallback(async () => {
    historyManager.addItem(
      {
        type: MessageType.INFO,
        text: 'Refreshing hierarchical memory (GEMINI.md or other context files)...',
      },
      Date.now(),
    );
    try {
      const { memoryContent, fileCount, filePaths } =
        await loadHierarchicalGeminiMemory(
          process.cwd(),
          settings.merged.context?.loadMemoryFromIncludeDirectories
            ? config.getWorkspaceContext().getDirectories()
            : [],
          config.getDebugMode(),
          config.getFileService(),
          settings.merged,
          config.getExtensionContextFilePaths(),
          config.isTrustedFolder(),
          settings.merged.context?.importFormat || 'tree', // Use setting or default to 'tree'
          config.getFileFilteringOptions(),
        );

      config.setUserMemory(memoryContent);
      config.setGeminiMdFileCount(fileCount);
      config.setGeminiMdFilePaths(filePaths);

      setGeminiMdFileCount(fileCount);

      historyManager.addItem(
        {
          type: MessageType.INFO,
          text: `Memory refreshed successfully. ${
            memoryContent.length > 0
              ? `Loaded ${memoryContent.length} characters from ${fileCount} file(s).`
              : 'No memory content found.'
          }`,
        },
        Date.now(),
      );
      if (config.getDebugMode()) {
        console.log(
          `[DEBUG] Refreshed memory content in config: ${memoryContent.substring(
            0,
            200,
          )}...`,
        );
      }
    } catch (error) {
      const errorMessage = getErrorMessage(error);
      historyManager.addItem(
        {
          type: MessageType.ERROR,
          text: `Error refreshing memory: ${errorMessage}`,
        },
        Date.now(),
      );
      console.error('Error refreshing memory:', error);
    }
  }, [config, historyManager, settings.merged]);

  const cancelHandlerRef = useRef<() => void>(() => {});

  const {
    streamingState,
    submitQuery,
    initError,
    pendingHistoryItems: pendingGeminiHistoryItems,
    thought,
    cancelOngoingRequest,
    handleApprovalModeChange,
    activePtyId,
    loopDetectionConfirmationRequest,
  } = useGeminiStream(
    config.getGeminiClient(),
    historyManager.history,
    historyManager.addItem,
    config,
    settings,
    setDebugMessage,
    handleSlashCommand,
    shellModeActive,
    () => settings.merged.general?.preferredEditor as EditorType,
    onAuthError,
    performMemoryRefresh,
    modelSwitchedFromQuotaError,
    setModelSwitchedFromQuotaError,
    refreshStatic,
    () => cancelHandlerRef.current(),
    setEmbeddedShellFocused,
    terminalWidth,
    terminalHeight,
    embeddedShellFocused,
  );

  // Auto-accept indicator
  const showAutoAcceptIndicator = useAutoAcceptIndicator({
    config,
    addItem: historyManager.addItem,
    onApprovalModeChange: handleApprovalModeChange,
  });

  const { messageQueue, addMessage, clearQueue, getQueuedMessagesText } =
    useMessageQueue({
      isConfigInitialized,
      streamingState,
      submitQuery,
    });

  cancelHandlerRef.current = useCallback(() => {
    const pendingHistoryItems = [
      ...pendingSlashCommandHistoryItems,
      ...pendingGeminiHistoryItems,
    ];
    if (isToolExecuting(pendingHistoryItems)) {
      buffer.setText(''); // Just clear the prompt
      return;
    }

    const lastUserMessage = userMessages.at(-1);
    let textToSet = lastUserMessage || '';

    const queuedText = getQueuedMessagesText();
    if (queuedText) {
      textToSet = textToSet ? `${textToSet}\n\n${queuedText}` : queuedText;
      clearQueue();
    }

    if (textToSet) {
      buffer.setText(textToSet);
    }
  }, [
    buffer,
    userMessages,
    getQueuedMessagesText,
    clearQueue,
    pendingSlashCommandHistoryItems,
    pendingGeminiHistoryItems,
  ]);

  const handleFinalSubmit = useCallback(
    (submittedValue: string) => {
      addMessage(submittedValue);
    },
    [addMessage],
  );

  const handleClearScreen = useCallback(() => {
    historyManager.clearItems();
    clearConsoleMessagesState();
    console.clear();
    refreshStatic();
  }, [historyManager, clearConsoleMessagesState, refreshStatic]);

  const { handleInput: vimHandleInput } = useVim(buffer, handleFinalSubmit);

  /**
   * Determines if the input prompt should be active and accept user input.
   * Input is disabled during:
   * - Initialization errors
   * - Slash command processing
   * - Tool confirmations (WaitingForConfirmation state)
   * - Any future streaming states not explicitly allowed
   */
  const isInputActive =
    !initError &&
    !isProcessing &&
    !!slashCommands &&
    (streamingState === StreamingState.Idle ||
      streamingState === StreamingState.Responding) &&
    !proQuotaRequest;

  const [controlsHeight, setControlsHeight] = useState(0);

  useLayoutEffect(() => {
    if (mainControlsRef.current) {
      const fullFooterMeasurement = measureElement(mainControlsRef.current);
      if (fullFooterMeasurement.height > 0) {
        setControlsHeight(fullFooterMeasurement.height);
      }
    }
  }, [buffer, terminalWidth, terminalHeight]);

  // Compute available terminal height based on controls measurement
  const availableTerminalHeight = Math.max(
    0,
    terminalHeight - controlsHeight - staticExtraHeight - 2,
  );

  config.setShellExecutionConfig({
    terminalWidth: Math.floor(terminalWidth * SHELL_WIDTH_FRACTION),
    terminalHeight: Math.max(
      Math.floor(availableTerminalHeight - SHELL_HEIGHT_PADDING),
      1,
    ),
    pager: settings.merged.tools?.shell?.pager,
    showColor: settings.merged.tools?.shell?.showColor,
  });

  const isFocused = useFocus();
  useBracketedPaste();

  // Context file names computation
  const contextFileNames = useMemo(() => {
    const fromSettings = settings.merged.context?.fileName;
    return fromSettings
      ? Array.isArray(fromSettings)
        ? fromSettings
        : [fromSettings]
      : getAllGeminiMdFilenames();
  }, [settings.merged.context?.fileName]);
  // Initial prompt handling
  const initialPrompt = useMemo(() => config.getQuestion(), [config]);
  const initialPromptSubmitted = useRef(false);
  const geminiClient = config.getGeminiClient();

  useEffect(() => {
    if (activePtyId) {
      ShellExecutionService.resizePty(
        activePtyId,
        Math.floor(terminalWidth * SHELL_WIDTH_FRACTION),
        Math.max(Math.floor(availableTerminalHeight - SHELL_HEIGHT_PADDING), 1),
      );
    }
  }, [terminalWidth, availableTerminalHeight, activePtyId]);

  useEffect(() => {
    if (
      initialPrompt &&
      isConfigInitialized &&
      !initialPromptSubmitted.current &&
      !isAuthenticating &&
      !isAuthDialogOpen &&
      !isThemeDialogOpen &&
      !isEditorDialogOpen &&
      !showPrivacyNotice &&
      geminiClient?.isInitialized?.()
    ) {
      handleFinalSubmit(initialPrompt);
      initialPromptSubmitted.current = true;
    }
  }, [
    initialPrompt,
    isConfigInitialized,
    handleFinalSubmit,
    isAuthenticating,
    isAuthDialogOpen,
    isThemeDialogOpen,
    isEditorDialogOpen,
    showPrivacyNotice,
    geminiClient,
  ]);

  const [idePromptAnswered, setIdePromptAnswered] = useState(false);
  const [currentIDE, setCurrentIDE] = useState<IdeInfo | null>(null);

  useEffect(() => {
    const getIde = async () => {
      const ideClient = await IdeClient.getInstance();
      const currentIde = ideClient.getCurrentIde();
      setCurrentIDE(currentIde || null);
    };
    getIde();
  }, []);
  const shouldShowIdePrompt = Boolean(
    currentIDE &&
      !config.getIdeMode() &&
      !settings.merged.ide?.hasSeenNudge &&
      !idePromptAnswered,
  );

  const [showErrorDetails, setShowErrorDetails] = useState<boolean>(false);
  const [showToolDescriptions, setShowToolDescriptions] =
    useState<boolean>(false);
  const [renderMarkdown, setRenderMarkdown] = useState<boolean>(true);

  const [ctrlCPressedOnce, setCtrlCPressedOnce] = useState(false);
  const ctrlCTimerRef = useRef<NodeJS.Timeout | null>(null);
  const [ctrlDPressedOnce, setCtrlDPressedOnce] = useState(false);
  const ctrlDTimerRef = useRef<NodeJS.Timeout | null>(null);
  const [constrainHeight, setConstrainHeight] = useState<boolean>(true);
  const [ideContextState, setIdeContextState] = useState<
    IdeContext | undefined
  >();
  const [showEscapePrompt, setShowEscapePrompt] = useState(false);
  const [showIdeRestartPrompt, setShowIdeRestartPrompt] = useState(false);

  const { isFolderTrustDialogOpen, handleFolderTrustSelect, isRestarting } =
    useFolderTrust(settings, setIsTrustedFolder, historyManager.addItem);
  const {
    needsRestart: ideNeedsRestart,
    restartReason: ideTrustRestartReason,
  } = useIdeTrustListener();
  const isInitialMount = useRef(true);

  useEffect(() => {
    if (ideNeedsRestart) {
      // IDE trust changed, force a restart.
      setShowIdeRestartPrompt(true);
    }
  }, [ideNeedsRestart]);

  useEffect(() => {
    if (queueErrorMessage) {
      const timer = setTimeout(() => {
        setQueueErrorMessage(null);
      }, QUEUE_ERROR_DISPLAY_DURATION_MS);

      return () => clearTimeout(timer);
    }
    return undefined;
  }, [queueErrorMessage, setQueueErrorMessage]);

  useEffect(() => {
    if (isInitialMount.current) {
      isInitialMount.current = false;
      return;
    }

    const handler = setTimeout(() => {
      refreshStatic();
    }, 300);

    return () => {
      clearTimeout(handler);
    };
  }, [terminalWidth, refreshStatic]);

  useEffect(() => {
    const unsubscribe = ideContextStore.subscribe(setIdeContextState);
    setIdeContextState(ideContextStore.get());
    return unsubscribe;
  }, []);

  useEffect(() => {
    const openDebugConsole = () => {
      setShowErrorDetails(true);
      setConstrainHeight(false);
    };
    appEvents.on(AppEvent.OpenDebugConsole, openDebugConsole);

    const logErrorHandler = (errorMessage: unknown) => {
      handleNewMessage({
        type: 'error',
        content: String(errorMessage),
        count: 1,
      });
    };
    appEvents.on(AppEvent.LogError, logErrorHandler);

    return () => {
      appEvents.off(AppEvent.OpenDebugConsole, openDebugConsole);
      appEvents.off(AppEvent.LogError, logErrorHandler);
    };
  }, [handleNewMessage]);

  const handleEscapePromptChange = useCallback((showPrompt: boolean) => {
    setShowEscapePrompt(showPrompt);
  }, []);

  const handleIdePromptComplete = useCallback(
    (result: IdeIntegrationNudgeResult) => {
      if (result.userSelection === 'yes') {
        handleSlashCommand('/ide install');
        settings.setValue(
          SettingScope.User,
          'hasSeenIdeIntegrationNudge',
          true,
        );
      } else if (result.userSelection === 'dismiss') {
        settings.setValue(
          SettingScope.User,
          'hasSeenIdeIntegrationNudge',
          true,
        );
      }
      setIdePromptAnswered(true);
    },
    [handleSlashCommand, settings],
  );

  const { elapsedTime, currentLoadingPhrase } = useLoadingIndicator(
    streamingState,
    settings.merged.ui?.customWittyPhrases,
  );

  const handleExit = useCallback(
    (
      pressedOnce: boolean,
      setPressedOnce: (value: boolean) => void,
      timerRef: React.MutableRefObject<NodeJS.Timeout | null>,
    ) => {
      if (pressedOnce) {
        if (timerRef.current) {
          clearTimeout(timerRef.current);
        }
        handleSlashCommand('/quit');
      } else {
        setPressedOnce(true);
        timerRef.current = setTimeout(() => {
          setPressedOnce(false);
          timerRef.current = null;
        }, CTRL_EXIT_PROMPT_DURATION_MS);
      }
    },
    [handleSlashCommand],
  );

  const handleGlobalKeypress = useCallback(
    (key: Key) => {
      // Debug log keystrokes if enabled
      if (settings.merged.general?.debugKeystrokeLogging) {
        console.log('[DEBUG] Keystroke:', JSON.stringify(key));
      }

      if (keyMatchers[Command.QUIT](key)) {
        if (!ctrlCPressedOnce) {
          cancelOngoingRequest?.();
        }

        if (!ctrlCPressedOnce) {
          setCtrlCPressedOnce(true);
          ctrlCTimerRef.current = setTimeout(() => {
            setCtrlCPressedOnce(false);
            ctrlCTimerRef.current = null;
          }, CTRL_EXIT_PROMPT_DURATION_MS);
          return;
        }

        handleExit(ctrlCPressedOnce, setCtrlCPressedOnce, ctrlCTimerRef);
        return;
      } else if (keyMatchers[Command.EXIT](key)) {
        if (buffer.text.length > 0) {
          return;
        }
        handleExit(ctrlDPressedOnce, setCtrlDPressedOnce, ctrlDTimerRef);
        return;
      }

      let enteringConstrainHeightMode = false;
      if (!constrainHeight) {
        enteringConstrainHeightMode = true;
        setConstrainHeight(true);
      }

      if (keyMatchers[Command.SHOW_ERROR_DETAILS](key)) {
        setShowErrorDetails((prev) => !prev);
      } else if (keyMatchers[Command.TOGGLE_TOOL_DESCRIPTIONS](key)) {
        const newValue = !showToolDescriptions;
        setShowToolDescriptions(newValue);

        const mcpServers = config.getMcpServers();
        if (Object.keys(mcpServers || {}).length > 0) {
          handleSlashCommand(newValue ? '/mcp desc' : '/mcp nodesc');
        }
      } else if (keyMatchers[Command.TOGGLE_MARKDOWN](key)) {
        setRenderMarkdown((prev) => {
          const newValue = !prev;
          // Force re-render of static content
          refreshStatic();
          return newValue;
        });
      } else if (
        keyMatchers[Command.TOGGLE_IDE_CONTEXT_DETAIL](key) &&
        config.getIdeMode() &&
        ideContextState
      ) {
        handleSlashCommand('/ide status');
      } else if (
        keyMatchers[Command.SHOW_MORE_LINES](key) &&
        !enteringConstrainHeightMode
      ) {
        setConstrainHeight(false);
      } else if (keyMatchers[Command.TOGGLE_SHELL_INPUT_FOCUS](key)) {
        if (activePtyId || embeddedShellFocused) {
          setEmbeddedShellFocused((prev) => !prev);
        }
      }
    },
    [
      constrainHeight,
      setConstrainHeight,
      setShowErrorDetails,
      showToolDescriptions,
      setShowToolDescriptions,
      config,
      ideContextState,
      handleExit,
      ctrlCPressedOnce,
      setCtrlCPressedOnce,
      ctrlCTimerRef,
      buffer.text.length,
      ctrlDPressedOnce,
      setCtrlDPressedOnce,
      ctrlDTimerRef,
      handleSlashCommand,
      cancelOngoingRequest,
      activePtyId,
      embeddedShellFocused,
      settings.merged.general?.debugKeystrokeLogging,
      refreshStatic,
    ],
  );

  useKeypress(handleGlobalKeypress, { isActive: true });

  // Update terminal title with Gemini CLI status and thoughts
  useEffect(() => {
    // Respect both showStatusInTitle and hideWindowTitle settings
    if (
      !settings.merged.ui?.showStatusInTitle ||
      settings.merged.ui?.hideWindowTitle
    )
      return;

    let title;
    if (streamingState === StreamingState.Idle) {
      title = originalTitleRef.current;
    } else {
      const statusText = thought?.subject
        ?.replace(/[\r\n]+/g, ' ')
        .substring(0, 80);
      title = statusText || originalTitleRef.current;
    }

    // Pad the title to a fixed width to prevent taskbar icon resizing.
    const paddedTitle = title.padEnd(80, ' ');

    // Only update the title if it's different from the last value we set
    if (lastTitleRef.current !== paddedTitle) {
      lastTitleRef.current = paddedTitle;
      stdout.write(`\x1b]2;${paddedTitle}\x07`);
    }
    // Note: We don't need to reset the window title on exit because Gemini CLI is already doing that elsewhere
  }, [
    streamingState,
    thought,
    settings.merged.ui?.showStatusInTitle,
    settings.merged.ui?.hideWindowTitle,
    stdout,
  ]);

  const filteredConsoleMessages = useMemo(() => {
    if (config.getDebugMode()) {
      return consoleMessages;
    }
    return consoleMessages.filter((msg) => msg.type !== 'debug');
  }, [consoleMessages, config]);

  // Computed values
  const errorCount = useMemo(
    () =>
      filteredConsoleMessages
        .filter((msg) => msg.type === 'error')
        .reduce((total, msg) => total + msg.count, 0),
    [filteredConsoleMessages],
  );

  const nightly = props.version.includes('nightly');

  const dialogsVisible =
    showWorkspaceMigrationDialog ||
    shouldShowIdePrompt ||
    isFolderTrustDialogOpen ||
    !!shellConfirmationRequest ||
    !!confirmationRequest ||
    confirmUpdateExtensionRequests.length > 0 ||
    !!loopDetectionConfirmationRequest ||
    isThemeDialogOpen ||
    isSettingsDialogOpen ||
    isModelDialogOpen ||
    isPermissionsDialogOpen ||
    isAuthenticating ||
    isAuthDialogOpen ||
    isEditorDialogOpen ||
    showPrivacyNotice ||
    showIdeRestartPrompt ||
    !!proQuotaRequest;

  const pendingHistoryItems = useMemo(
    () => [...pendingSlashCommandHistoryItems, ...pendingGeminiHistoryItems],
    [pendingSlashCommandHistoryItems, pendingGeminiHistoryItems],
  );

  const uiState: UIState = useMemo(
    () => ({
      history: historyManager.history,
      historyManager,
      isThemeDialogOpen,
      themeError,
      isAuthenticating,
      isConfigInitialized,
      authError,
      isAuthDialogOpen,
      editorError,
      isEditorDialogOpen,
      showPrivacyNotice,
      corgiMode,
      debugMessage,
      quittingMessages,
      isSettingsDialogOpen,
      isModelDialogOpen,
      isPermissionsDialogOpen,
      slashCommands,
      pendingSlashCommandHistoryItems,
      commandContext,
      shellConfirmationRequest,
      confirmationRequest,
      confirmUpdateExtensionRequests,
      loopDetectionConfirmationRequest,
      geminiMdFileCount,
      streamingState,
      initError,
      pendingGeminiHistoryItems,
      thought,
      shellModeActive,
      userMessages,
      buffer,
      inputWidth,
      suggestionsWidth,
      isInputActive,
      shouldShowIdePrompt,
      isFolderTrustDialogOpen: isFolderTrustDialogOpen ?? false,
      isTrustedFolder,
      constrainHeight,
      showErrorDetails,
      filteredConsoleMessages,
      ideContextState,
      showToolDescriptions,
      renderMarkdown,
      ctrlCPressedOnce,
      ctrlDPressedOnce,
      showEscapePrompt,
      isFocused,
      elapsedTime,
      currentLoadingPhrase,
      historyRemountKey,
      messageQueue,
      queueErrorMessage,
      showAutoAcceptIndicator,
      showWorkspaceMigrationDialog,
      workspaceExtensions,
      currentModel,
      userTier,
      proQuotaRequest,
      contextFileNames,
      errorCount,
      availableTerminalHeight,
      mainAreaWidth,
      staticAreaMaxItemHeight,
      staticExtraHeight,
      dialogsVisible,
      pendingHistoryItems,
      nightly,
      branchName,
      sessionStats,
      terminalWidth,
      terminalHeight,
      mainControlsRef,
      rootUiRef,
      currentIDE,
      updateInfo,
      showIdeRestartPrompt,
      ideTrustRestartReason,
      isRestarting,
      extensionsUpdateState,
      activePtyId,
      embeddedShellFocused,
      showDebugProfiler,
    }),
    [
      isThemeDialogOpen,
      themeError,
      isAuthenticating,
      isConfigInitialized,
      authError,
      isAuthDialogOpen,
      editorError,
      isEditorDialogOpen,
      showPrivacyNotice,
      corgiMode,
      debugMessage,
      quittingMessages,
      isSettingsDialogOpen,
      isModelDialogOpen,
      isPermissionsDialogOpen,
      slashCommands,
      pendingSlashCommandHistoryItems,
      commandContext,
      shellConfirmationRequest,
      confirmationRequest,
      confirmUpdateExtensionRequests,
      loopDetectionConfirmationRequest,
      geminiMdFileCount,
      streamingState,
      initError,
      pendingGeminiHistoryItems,
      thought,
      shellModeActive,
      userMessages,
      buffer,
      inputWidth,
      suggestionsWidth,
      isInputActive,
      shouldShowIdePrompt,
      isFolderTrustDialogOpen,
      isTrustedFolder,
      constrainHeight,
      showErrorDetails,
      filteredConsoleMessages,
      ideContextState,
      showToolDescriptions,
      renderMarkdown,
      ctrlCPressedOnce,
      ctrlDPressedOnce,
      showEscapePrompt,
      isFocused,
      elapsedTime,
      currentLoadingPhrase,
      historyRemountKey,
      messageQueue,
      queueErrorMessage,
      showAutoAcceptIndicator,
      showWorkspaceMigrationDialog,
      workspaceExtensions,
      userTier,
      proQuotaRequest,
      contextFileNames,
      errorCount,
      availableTerminalHeight,
      mainAreaWidth,
      staticAreaMaxItemHeight,
      staticExtraHeight,
      dialogsVisible,
      pendingHistoryItems,
      nightly,
      branchName,
      sessionStats,
      terminalWidth,
      terminalHeight,
      mainControlsRef,
      rootUiRef,
      currentIDE,
      updateInfo,
      showIdeRestartPrompt,
      ideTrustRestartReason,
      isRestarting,
      currentModel,
      extensionsUpdateState,
      activePtyId,
      historyManager,
      embeddedShellFocused,
      showDebugProfiler,
    ],
  );

  const exitPrivacyNotice = useCallback(
    () => setShowPrivacyNotice(false),
    [setShowPrivacyNotice],
  );

  const uiActions: UIActions = useMemo(
    () => ({
      handleThemeSelect,
      handleThemeHighlight,
      handleAuthSelect,
      setAuthState,
      onAuthError,
      handleEditorSelect,
      exitEditorDialog,
      exitPrivacyNotice,
      closeSettingsDialog,
      closeModelDialog,
      closePermissionsDialog,
      setShellModeActive,
      vimHandleInput,
      handleIdePromptComplete,
      handleFolderTrustSelect,
      setConstrainHeight,
      onEscapePromptChange: handleEscapePromptChange,
      refreshStatic,
      handleFinalSubmit,
      handleClearScreen,
      onWorkspaceMigrationDialogOpen,
      onWorkspaceMigrationDialogClose,
      handleProQuotaChoice,
      setQueueErrorMessage,
    }),
    [
      handleThemeSelect,
      handleThemeHighlight,
      handleAuthSelect,
      setAuthState,
      onAuthError,
      handleEditorSelect,
      exitEditorDialog,
      exitPrivacyNotice,
      closeSettingsDialog,
      closeModelDialog,
      closePermissionsDialog,
      setShellModeActive,
      vimHandleInput,
      handleIdePromptComplete,
      handleFolderTrustSelect,
      setConstrainHeight,
      handleEscapePromptChange,
      refreshStatic,
      handleFinalSubmit,
      handleClearScreen,
      onWorkspaceMigrationDialogOpen,
      onWorkspaceMigrationDialogClose,
      handleProQuotaChoice,
      setQueueErrorMessage,
    ],
  );

  return (
    <UIStateContext.Provider value={uiState}>
      <UIActionsContext.Provider value={uiActions}>
        <ConfigContext.Provider value={config}>
          <AppContext.Provider
            value={{
              version: props.version,
              startupWarnings: props.startupWarnings || [],
            }}
          >
            <ShellFocusContext.Provider value={isFocused}>
              <App />
            </ShellFocusContext.Provider>
          </AppContext.Provider>
        </ConfigContext.Provider>
      </UIActionsContext.Provider>
    </UIStateContext.Provider>
  );
};