import { Message, AIMessage, ToolMessage } from "@langchain/langgraph-sdk";
import { RenderMessage } from "./LangGraphClient.js";
import { SpendTime } from "./SpendTime.js";
/**
 * @zh StreamingMessageType 类用于判断消息的类型。
 * @en The StreamingMessageType class is used to determine the type of a message.
 */
export declare class StreamingMessageType {
    static isTool(m: Message): m is ToolMessage;
    static isToolAssistant(m: Message): m is AIMessage;
}
/**
 * @zh MessageProcessor 类用于统一处理 Message 相关的逻辑，避免重复处理。
 * @en The MessageProcessor class is used to uniformly handle Message-related logic and avoid duplicate processing.
 */
export declare class MessageProcessor {
    /** 流式消息缓存 */
    private streamingMessage;
    /** 图发过来的更新信息 */
    private graphMessages;
    spendTime: SpendTime;
    constructor();
    /**
     * @zh 获取流式消息
     * @en Get streaming messages
     */
    getStreamingMessages(): RenderMessage[];
    /**
     * @zh 设置流式消息
     * @en Set streaming messages
     */
    setStreamingMessages(messages: RenderMessage[]): void;
    /**
     * @zh 清空流式消息
     * @en Clear streaming messages
     */
    clearStreamingMessages(): void;
    /**
     * @zh 获取图消息
     * @en Get graph messages
     */
    getGraphMessages(): RenderMessage[];
    /**
     * @zh 设置图消息
     * @en Set graph messages
     */
    setGraphMessages(messages: RenderMessage[]): void;
    /**
     * @zh 更新流式消息
     * @en Update streaming message
     */
    updateStreamingMessage(message: RenderMessage): void;
    /**
     * @zh 将 graphMessages 和 streamingMessage 合并，并返回新的消息数组
     * @en Combine graphMessages and streamingMessage and return a new message array
     */
    combineGraphMessagesWithStreamingMessages(): RenderMessage[];
    /**
     * @zh 克隆消息对象
     * @en Clone message object
     */
    cloneMessage(message: Message): Message;
    /**
     * @zh 为消息附加额外的信息，如耗时、唯一 ID 等。
     * @en Attaches additional information to messages, such as spend time, unique ID, etc.
     */
    attachInfoForMessage(messages: RenderMessage[]): RenderMessage[];
    /**
     * @zh 组合工具消息，将 AI 的工具调用和工具的执行结果关联起来。
     * @en Composes tool messages, associating AI tool calls with tool execution results.
     */
    composeToolMessages(messages: RenderMessage[]): RenderMessage[];
    /**
     * @zh 生成用于 UI 中的流式渲染的消息
     * @en Generate messages used for streaming rendering in the UI
     */
    renderMessages(graphState: any, getGraphNodeNow: () => {
        name: string;
    }, messagesMetadata: Record<string, any>): RenderMessage[];
    foldTreeMessages(messages: RenderMessage[], graphState?: {
        task_store?: Record<string, {
            messages: RenderMessage[];
        }>;
    }, messagesMetadata?: Record<string, any>): RenderMessage[];
    private beforeFold;
    /**
     * @zh 统一的消息处理入口，按顺序执行所有处理步骤
     * @en Unified message processing entry point, executing all processing steps in order
     */
    processMessages(messages: RenderMessage[], graphState?: any, messagesMetadata?: Record<string, any>): RenderMessage[];
}