import { LangGraphClient, LangGraphClientConfig, RenderMessage, SendMessageOptions } from "../LangGraphClient.js";
import { AssistantGraph, Message, Thread } from "@langchain/langgraph-sdk";
import { UnionTool } from "../tool/createTool.js";
/**
 * @zh 格式化日期对象为时间字符串。
 * @en Formats a Date object into a time string.
 */
export declare const formatTime: (date: Date) => string;
/**
 * @zh 格式化数字为带千位分隔符的字符串。
 * @en Formats a number into a string with thousand separators.
 */
export declare const formatTokens: (tokens: number) => string;
/**
 * @zh 获取消息内容的文本表示，处理不同类型的消息内容。
 * @en Gets the text representation of message content, handling different types of message content.
 */
export declare const getMessageContent: (content: any) => string;
/**
 * @zh 获取历史记录中 Thread 内容的文本表示。
 * @en Gets the text representation of Thread content in history.
 */
export declare const getHistoryContent: (thread: Thread) => string | any[];
/**
 * @zh 创建一个用于聊天界面的状态管理器 (store)。
 * @en Creates a state manager (store) for the chat interface.
 */
export declare const createChatStore: (initClientName: string, config: LangGraphClientConfig, context?: {
    showHistory?: boolean;
    showGraph?: boolean;
    onInit?: (client: LangGraphClient) => void;
}) => {
    data: {
        client: import("nanostores").PreinitializedWritableAtom<LangGraphClient | null> & object;
        renderMessages: import("nanostores").PreinitializedWritableAtom<RenderMessage[]> & object;
        userInput: import("nanostores").PreinitializedWritableAtom<string> & object;
        loading: import("nanostores").PreinitializedWritableAtom<boolean> & object;
        inChatError: import("nanostores").PreinitializedWritableAtom<string | null> & object;
        currentAgent: import("nanostores").PreinitializedWritableAtom<string> & object;
        collapsedTools: import("nanostores").PreinitializedWritableAtom<string[]> & object;
        showHistory: import("nanostores").PreinitializedWritableAtom<boolean> & object;
        historyList: import("nanostores").PreinitializedWritableAtom<Thread<{
            messages: Message[];
        }>[]> & object;
        currentChatId: import("nanostores").PreinitializedWritableAtom<string | null> & object;
        showGraph: import("nanostores").PreinitializedWritableAtom<boolean> & object;
        graphVisualize: import("nanostores").PreinitializedWritableAtom<AssistantGraph | null> & object;
        currentNodeName: import("nanostores").PreinitializedWritableAtom<string> & object;
        tools: import("nanostores").PreinitializedWritableAtom<UnionTool<any, Object, any>[]> & object;
    };
    mutations: {
        refreshTools: () => Promise<void>;
        setTools(new_tools: UnionTool<any>[]): void;
        isFELocking(): boolean | undefined;
        initClient: () => Promise<LangGraphClient>;
        sendMessage: (message?: Message[], extraData?: SendMessageOptions) => Promise<void>;
        stopGeneration: () => void;
        toggleToolCollapse: (toolId: string) => void;
        toggleHistoryVisible: () => void;
        refreshHistoryList: () => Promise<void>;
        addToHistory: (thread: Thread<{
            messages: Message[];
        }>) => void;
        /**
         * @zh 设置用户输入内容。
         * @en Sets the user input content.
         */
        setUserInput(input: string): void;
        /**
         * @zh 设置当前的 Agent 并重新初始化客户端。
         * @en Sets the current Agent and reinitializes the client.
         */
        setCurrentAgent(agent: string): Promise<void>;
        toggleGraphVisible(): void;
        refreshGraph: () => Promise<void>;
        /**
         * @zh 创建一个新的聊天会话。
         * @en Creates a new chat session.
         */
        createNewChat(): void;
        /**
         * @zh 切换到指定的历史聊天会话。
         * @en Switches to the specified historical chat session.
         */
        toHistoryChat(thread: Thread<{
            messages: Message[];
        }>): void;
        /**
         * @zh 删除指定的历史聊天会话。
         * @en Deletes the specified historical chat session.
         */
        deleteHistoryChat(thread: Thread<{
            messages: Message[];
        }>): Promise<void>;
        getToolUIRender: (tool_name: string) => ((message: RenderMessage) => Object) | null;
    };
};