import { BaseAgent } from './agents/BaseAgent';
import { LlmAgent } from './agents/LlmAgent';
import { LiveRequestQueue } from './agents/LiveRequestQueue';
import { RunConfig } from './agents/RunConfig';
import { BaseArtifactService } from './artifacts/BaseArtifactService';
import { Event } from './events/Event';
import { BaseMemoryService } from './memory/BaseMemoryService';
import { Content } from './models/types';
import { BaseSessionService } from './sessions/BaseSessionService';
import { Session } from './sessions/Session';
/**
 * The Runner class is used to run agents.
 *
 * It manages the execution of an agent within a session, handling message
 * processing, event generation, and interaction with various services like
 * artifact storage, session management, and memory.
 */
export declare class Runner {
    /**
     * The application name of the runner.
     */
    appName: string;
    /**
     * The root agent to run.
     */
    agent: BaseAgent;
    /**
     * The artifact service for the runner.
     */
    artifactService?: BaseArtifactService;
    /**
     * The session service for the runner.
     */
    sessionService: BaseSessionService;
    /**
     * The memory service for the runner.
     */
    memoryService?: BaseMemoryService;
    /**
     * Initializes the Runner.
     *
     * @param params The parameters for the runner.
     * @param params.appName The application name of the runner.
     * @param params.agent The root agent to run.
     * @param params.artifactService The artifact service for the runner.
     * @param params.sessionService The session service for the runner.
     * @param params.memoryService The memory service for the runner.
     */
    constructor(params: {
        appName: string;
        agent: BaseAgent;
        artifactService?: BaseArtifactService;
        sessionService: BaseSessionService;
        memoryService?: BaseMemoryService;
    });
    /**
     * Runs the agent.
     *
     * NOTE: This sync interface is only for local testing and convenience purpose.
     * Consider using `runAsync` for production usage.
     *
     * @param params The parameters for the run.
     * @param params.userId The user ID of the session.
     * @param params.sessionId The session ID of the session.
     * @param params.newMessage A new message to append to the session.
     * @param params.runConfig The run config for the agent.
     * @returns A generator that yields the events generated by the agent.
     */
    run(params: {
        userId: string;
        sessionId: string;
        newMessage: Content;
        runConfig?: RunConfig;
    }): AsyncGenerator<Event, void, unknown>;
    /**
     * Main entry method to run the agent in this runner.
     *
     * @param params The parameters for the run.
     * @param params.userId The user ID of the session.
     * @param params.sessionId The session ID of the session.
     * @param params.newMessage A new message to append to the session.
     * @param params.runConfig The run config for the agent.
     * @returns An async generator that yields events generated by the agent.
     */
    runAsync(params: {
        userId: string;
        sessionId: string;
        newMessage: Content;
        runConfig?: RunConfig;
    }): AsyncGenerator<Event, void, unknown>;
    /**
     * Appends a new message to a session.
     *
     * @param params The parameters for appending a message.
     * @param params.session The session to append to.
     * @param params.newMessage The message to append.
     * @param params.invocationContext The invocation context.
     * @param params.saveInputBlobsAsArtifacts Whether to save input blobs as artifacts.
     * @private
     */
    private _appendNewMessageToSession;
    /**
     * Runs the agent in live mode.
     *
     * @param params The parameters for live mode.
     * @param params.session The session to use.
     * @param params.liveRequestQueue The queue for live requests.
     * @param params.runConfig The run config for the agent.
     * @returns An async generator of events.
     *
     * @experimental This feature is **experimental** and its API or behavior may change
     *               in future releases.
     */
    runLive(params: {
        session: Session;
        liveRequestQueue: LiveRequestQueue;
        runConfig?: RunConfig;
    }): AsyncGenerator<Event, void, unknown>;
    /**
     * Closes a session and adds it to the memory service.
     *
     * @param session The session to close.
     * @experimental This feature is **experimental** and its API or behavior may change
     *               in future releases.
     */
    closeSession(session: Session): Promise<void>;
    /**
     * Finds the agent to run to continue the session.
     *
     * A qualified agent must be either of:
     * - The root agent;
     * - An LlmAgent who replied last and is capable to transfer to any other agent
     *   in the agent hierarchy.
     *
     * @param session The session to find the agent for.
     * @param rootAgent The root agent of the runner.
     * @returns The agent of the last message in the session or the root agent.
     * @private
     */
    private _findAgentToRun;
    /**
     * Whether the agent to run can transfer to any other agent in the agent tree.
     *
     * This typically means all agent_to_run's parent through root agent can
     * transfer to their parent_agent.
     *
     * @param agentToRun The agent to check for transferability.
     * @returns True if the agent can transfer, False otherwise.
     * @private
     */
    private _isTransferableAcrossAgentTree;
    /**
     * Creates a new invocation context.
     *
     * @param params The parameters for the invocation context.
     * @param params.session The session for the context.
     * @param params.newMessage The new message for the context.
     * @param params.liveRequestQueue The live request queue for the context.
     * @param params.runConfig The run config for the context.
     * @returns The new invocation context.
     * @private
     */
    private _newInvocationContext;
    /**
     * Creates a new invocation context for live multi-agent.
     *
     * @param params The parameters for the invocation context.
     * @param params.session The session for the context.
     * @param params.liveRequestQueue The live request queue for the context.
     * @param params.runConfig The run config for the context.
     * @returns The new invocation context.
     * @private
     */
    private _newInvocationContextForLive;
}
/**
 * An in-memory Runner for testing and development.
 *
 * This runner uses in-memory implementations for artifact, session, and memory
 * services, providing a lightweight and self-contained environment for agent
 * execution.
 */
export declare class InMemoryRunner extends Runner {
    /**
     * Initializes the InMemoryRunner.
     *
     * @param agent The root agent to run.
     * @param appName The application name of the runner. Defaults to 'InMemoryRunner'.
     */
    constructor(agent: LlmAgent, appName?: string);
}