423 lines
14 KiB
TypeScript
423 lines
14 KiB
TypeScript
/**
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* @license
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* Copyright 2025 Google LLC
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* SPDX-License-Identifier: Apache-2.0
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*/
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import { exec as _exec } from 'child_process';
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import { useState, useRef, useCallback, useEffect } from 'react';
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import { useInput } from 'ink';
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// Import server-side client and types
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import {
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GeminiClient,
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GeminiEventType as ServerGeminiEventType, // Rename to avoid conflict
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getErrorMessage,
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isNodeError,
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ToolResult,
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} from '@gemini-code/server';
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import type { Chat, PartListUnion, FunctionDeclaration } from '@google/genai';
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// Import CLI types
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import {
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HistoryItem,
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IndividualToolCallDisplay,
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ToolCallStatus,
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} from '../types.js';
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import { Tool } from '../../tools/tools.js'; // CLI Tool definition
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import { StreamingState } from '../../core/gemini-stream.js';
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// Import CLI tool registry
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import { toolRegistry } from '../../tools/tool-registry.js';
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const _allowlistedCommands = ['ls']; // Prefix with underscore since it's unused
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const addHistoryItem = (
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setHistory: React.Dispatch<React.SetStateAction<HistoryItem[]>>,
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itemData: Omit<HistoryItem, 'id'>,
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id: number,
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) => {
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setHistory((prevHistory) => [
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...prevHistory,
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{ ...itemData, id } as HistoryItem,
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]);
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};
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// Hook now accepts apiKey and model
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export const useGeminiStream = (
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setHistory: React.Dispatch<React.SetStateAction<HistoryItem[]>>,
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apiKey: string,
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model: string,
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) => {
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const [streamingState, setStreamingState] = useState<StreamingState>(
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StreamingState.Idle,
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);
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const [debugMessage, setDebugMessage] = useState<string>('');
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const [initError, setInitError] = useState<string | null>(null);
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const abortControllerRef = useRef<AbortController | null>(null);
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const chatSessionRef = useRef<Chat | null>(null);
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const geminiClientRef = useRef<GeminiClient | null>(null);
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const messageIdCounterRef = useRef(0);
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const currentGeminiMessageIdRef = useRef<number | null>(null);
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// Initialize Client Effect - uses props now
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useEffect(() => {
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setInitError(null);
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if (!geminiClientRef.current) {
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try {
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geminiClientRef.current = new GeminiClient(apiKey, model);
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} catch (error: unknown) {
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setInitError(
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`Failed to initialize client: ${getErrorMessage(error) || 'Unknown error'}`,
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);
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}
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}
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// Dependency array includes apiKey and model now
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}, [apiKey, model]);
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// Input Handling Effect (remains the same)
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useInput((input, key) => {
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if (streamingState === StreamingState.Responding && key.escape) {
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abortControllerRef.current?.abort();
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}
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});
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// ID Generation Callback (remains the same)
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const getNextMessageId = useCallback((baseTimestamp: number): number => {
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messageIdCounterRef.current += 1;
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return baseTimestamp + messageIdCounterRef.current;
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}, []);
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// Helper function to update Gemini message content
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const updateGeminiMessage = useCallback(
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(messageId: number, newContent: string) => {
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setHistory((prevHistory) =>
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prevHistory.map((item) =>
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item.id === messageId && item.type === 'gemini'
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? { ...item, text: newContent }
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: item,
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),
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);
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},
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[setHistory],
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);
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// Improved submit query function
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const submitQuery = useCallback(
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async (query: PartListUnion) => {
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if (streamingState === StreamingState.Responding) return;
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if (typeof query === 'string' && query.trim().length === 0) return;
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if (typeof query === 'string') {
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setDebugMessage(`User query: ${query}`);
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}
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const userMessageTimestamp = Date.now();
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const client = geminiClientRef.current;
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if (!client) {
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setInitError('Gemini client is not available.');
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return;
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}
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if (!chatSessionRef.current) {
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try {
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// Use getFunctionDeclarations for startChat
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const toolSchemas = toolRegistry.getFunctionDeclarations();
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chatSessionRef.current = await client.startChat(toolSchemas);
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} catch (err: unknown) {
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setInitError(`Failed to start chat: ${getErrorMessage(err)}`);
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setStreamingState(StreamingState.Idle);
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return;
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}
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}
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setStreamingState(StreamingState.Responding);
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setInitError(null);
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messageIdCounterRef.current = 0; // Reset counter for new submission
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const chat = chatSessionRef.current;
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let currentToolGroupId: number | null = null;
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// For function responses, we don't need to add a user message
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if (typeof query === 'string') {
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// Only add user message for string queries, not for function responses
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addHistoryItem(
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setHistory,
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{ type: 'user', text: query },
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userMessageTimestamp,
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);
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}
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try {
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abortControllerRef.current = new AbortController();
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const signal = abortControllerRef.current.signal;
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// Get ServerTool descriptions for the server call
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const serverTools: ServerTool[] = toolRegistry
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.getAllTools()
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.map((cliTool: Tool) => ({
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name: cliTool.name,
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schema: cliTool.schema,
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execute: (args: Record<string, unknown>) =>
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cliTool.execute(args as ToolArgs), // Pass execution
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}));
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const stream = client.sendMessageStream(
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chat,
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query,
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serverTools,
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signal,
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);
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// Process the stream events from the server logic
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let currentGeminiText = ''; // To accumulate message content
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let hasInitialGeminiResponse = false;
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for await (const event of stream) {
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if (signal.aborted) break;
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if (event.type === ServerGeminiEventType.Content) {
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// For content events, accumulate the text and update an existing message or create a new one
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currentGeminiText += event.value;
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if (!hasInitialGeminiResponse) {
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// Create a new Gemini message if this is the first content event
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hasInitialGeminiResponse = true;
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const eventTimestamp = getNextMessageId(userMessageTimestamp);
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currentGeminiMessageIdRef.current = eventTimestamp;
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addHistoryItem(
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setHistory,
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{ type: 'gemini', text: currentGeminiText },
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eventTimestamp,
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);
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} else if (currentGeminiMessageIdRef.current !== null) {
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// Update the existing message with accumulated content
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updateGeminiMessage(
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currentGeminiMessageIdRef.current,
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currentGeminiText,
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);
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}
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} else if (event.type === ServerGeminiEventType.ToolCallRequest) {
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// Reset the Gemini message tracking for the next response
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currentGeminiText = '';
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hasInitialGeminiResponse = false;
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currentGeminiMessageIdRef.current = null;
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const { callId, name, args } = event.value;
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const cliTool = toolRegistry.getTool(name); // Get the full CLI tool
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if (!cliTool) {
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console.error(`CLI Tool "${name}" not found!`);
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continue;
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}
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if (currentToolGroupId === null) {
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currentToolGroupId = getNextMessageId(userMessageTimestamp);
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// Add explicit cast to Omit<HistoryItem, 'id'>
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addHistoryItem(
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setHistory,
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{ type: 'tool_group', tools: [] } as Omit<HistoryItem, 'id'>,
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currentToolGroupId,
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);
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}
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// Create the UI display object matching IndividualToolCallDisplay
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const toolCallDisplay: IndividualToolCallDisplay = {
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callId,
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name,
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description: cliTool.getDescription(args as ToolArgs),
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status: ToolCallStatus.Pending,
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resultDisplay: undefined,
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confirmationDetails: undefined,
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};
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// Add pending tool call to the UI history group
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setHistory((prevHistory) =>
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prevHistory.map((item) => {
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if (
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item.id === currentToolGroupId &&
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item.type === 'tool_group'
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) {
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// Ensure item.tools exists and is an array before spreading
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const currentTools = Array.isArray(item.tools)
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? item.tools
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: [];
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return {
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...item,
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tools: [...currentTools, toolCallDisplay], // Add the complete display object
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};
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}
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return item;
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}),
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);
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// --- Tool Execution & Confirmation Logic ---
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const confirmationDetails = await cliTool.shouldConfirmExecute(
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args as ToolArgs,
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);
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if (confirmationDetails) {
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setHistory((prevHistory) =>
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prevHistory.map((item) => {
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if (
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item.id === currentToolGroupId &&
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item.type === 'tool_group'
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) {
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return {
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...item,
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tools: item.tools.map((tool) =>
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tool.callId === callId
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? {
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...tool,
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status: ToolCallStatus.Confirming,
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confirmationDetails,
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}
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: tool,
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),
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};
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}
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return item;
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}),
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);
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setStreamingState(StreamingState.WaitingForConfirmation);
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return;
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}
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try {
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setHistory((prevHistory) =>
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prevHistory.map((item) => {
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if (
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item.id === currentToolGroupId &&
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item.type === 'tool_group'
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) {
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return {
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...item,
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tools: item.tools.map((tool) =>
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tool.callId === callId
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? { ...tool, status: ToolCallStatus.Invoked }
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: tool,
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),
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};
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}
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return item;
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}),
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);
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const result: ToolResult = await cliTool.execute(
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args as ToolArgs,
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);
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const resultPart = {
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functionResponse: {
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name,
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id: callId,
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response: { output: result.llmContent },
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},
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};
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setHistory((prevHistory) =>
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prevHistory.map((item) => {
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if (
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item.id === currentToolGroupId &&
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item.type === 'tool_group'
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) {
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return {
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...item,
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tools: item.tools.map((tool) =>
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tool.callId === callId
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? {
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...tool,
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status: ToolCallStatus.Success,
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resultDisplay: result.returnDisplay,
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}
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: tool,
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),
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};
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}
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return item;
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}),
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);
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// Execute the function and continue the stream
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await submitQuery(resultPart);
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return;
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} catch (execError: unknown) {
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const error = new Error(
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`Tool execution failed: ${execError instanceof Error ? execError.message : String(execError)}`,
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);
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const errorPart = {
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functionResponse: {
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name,
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id: callId,
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response: {
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error: `Tool execution failed: ${error.message}`,
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},
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},
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};
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setHistory((prevHistory) =>
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prevHistory.map((item) => {
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if (
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item.id === currentToolGroupId &&
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item.type === 'tool_group'
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) {
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return {
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...item,
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tools: item.tools.map((tool) =>
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tool.callId === callId
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? {
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...tool,
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status: ToolCallStatus.Error,
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resultDisplay: `Error: ${error.message}`,
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}
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: tool,
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),
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};
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}
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return item;
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}),
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);
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await submitQuery(errorPart);
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return;
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}
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}
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}
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} catch (error: unknown) {
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if (!isNodeError(error) || error.name !== 'AbortError') {
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console.error('Error processing stream or executing tool:', error);
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addHistoryItem(
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setHistory,
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{
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type: 'error',
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text: `[Error: ${getErrorMessage(error)}]`,
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},
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getNextMessageId(userMessageTimestamp),
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);
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}
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} finally {
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abortControllerRef.current = null;
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// Only set to Idle if not waiting for confirmation
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if (streamingState !== StreamingState.WaitingForConfirmation) {
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setStreamingState(StreamingState.Idle);
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}
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}
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},
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// Dependencies need careful review - including updateGeminiMessage
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[
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streamingState,
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setHistory,
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apiKey,
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model,
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getNextMessageId,
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updateGeminiMessage,
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],
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);
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return { streamingState, submitQuery, initError, debugMessage };
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};
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// Define ServerTool interface here if not importing from server (circular dep issue?)
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interface ServerTool {
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name: string;
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schema: FunctionDeclaration;
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execute(params: Record<string, unknown>): Promise<ToolResult>;
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}
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// Define a more specific type for tool arguments to replace 'any'
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type ToolArgs = Record<string, unknown>;
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