import { EventEmitter } from "events";
import { ContextManager } from "../context/context-manager";
import { ToolRegistry } from "../tools/registry";
import { Scheduler } from "./scheduler";
import { ToolExecutor } from "./tool-executor";
import type { ConfirmPlanFn } from "./agent-events";
export interface AgentStep {
    step: number;
    action: string;
    thought: string;
    observation: string;
    agentId?: string;
    plan?: string;
}
export interface AgentResult {
    success: boolean;
    finalAnswer: string;
    steps: AgentStep[];
    totalTokens: number;
    duration: number;
}
export declare class MainAgent extends EventEmitter {
    private contextManager;
    private toolRegistry;
    private scheduler;
    private toolExecutor?;
    private maxSteps;
    private steps;
    private confirmPlanFn?;
    constructor(contextManager: ContextManager, toolRegistry: ToolRegistry, scheduler: Scheduler, toolExecutor?: ToolExecutor, maxSteps?: number);
    private heartbeatCallback?;
    /** 统一事件发射 helper。 */
    private emitEvent;
    /** 设置后台任务心跳回调（background 运行时由 Session 注入）。传 undefined 清除。 */
    setHeartbeatCallback(fn?: () => void): void;
    /** 设置 Plan 确认回调（多步骤 Plan 执行前询问用户）。传 undefined 清除。 */
    setConfirmPlanFn(fn?: ConfirmPlanFn): void;
    getScheduler(): Scheduler;
    getToolRegistry(): ToolRegistry;
    getContextManager(): ContextManager;
    getToolExecutor(): ToolExecutor | undefined;
    /** 恢复历史 steps（会话重载，仅用于显示；下一次 run() 会重置）。 */
    setSteps(steps: AgentStep[]): void;
    /** 运行选项：后台执行时注入的取消信号与工具级超时。 */
    run(userTask: string, options?: {
        signal?: AbortSignal;
        toolTimeoutMs?: number;
    }): Promise<AgentResult>;
    /**
     * 判断是否为多步骤 Plan（两者结合）：
     * ① PLAN 文本含 ≥2 个编号步骤（1. / 1) / 1、 等格式，按行匹配）
     * ② 当前 step 并发动作数（actions + delegates）≥2
     * 满足任一即视为多步骤，需用户确认。
     */
    private isMultiStepPlan;
    private reactStep;
    /** toolExecutor 缺失时的回退执行（串行） */
    private fallbackExecuteBatch;
    /** 构造给子智能体的任务（含主控思考与原始任务上下文） */
    private buildDelegateTask;
}
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