import { F as Message, ay as Task, aQ as TaskStatusUpdateEvent, aS as TaskArtifactUpdateEvent, z as PushNotificationConfig, ae as AgentCard, x as MessageSendParams, X as TaskQueryParams, Z as TaskIdParams, $ as TaskPushNotificationConfig, a3 as GetTaskPushNotificationConfigParams, a7 as ListTaskPushNotificationConfigParams, a9 as DeleteTaskPushNotificationConfigParams } from '../extensions-DvruCIzw.js';
import { S as ServerCallContext, A as A2ARequestHandler } from '../a2a_request_handler-BuP9LgXH.js';
export { a as UnauthenticatedUser, U as User } from '../a2a_request_handler-BuP9LgXH.js';
export { J as JsonRpcTransportHandler } from '../jsonrpc_transport_handler-jldG2r_T.js';
export { A as A2AError } from '../error-CquguH6H.js';

type AgentExecutionEvent = Message | Task | TaskStatusUpdateEvent | TaskArtifactUpdateEvent;
/**
 * Event names supported by ExecutionEventBus.
 */
type ExecutionEventName = 'event' | 'finished';
interface ExecutionEventBus {
    publish(event: AgentExecutionEvent): void;
    on(eventName: ExecutionEventName, listener: (event: AgentExecutionEvent) => void): this;
    off(eventName: ExecutionEventName, listener: (event: AgentExecutionEvent) => void): this;
    once(eventName: ExecutionEventName, listener: (event: AgentExecutionEvent) => void): this;
    removeAllListeners(eventName?: ExecutionEventName): this;
    finished(): void;
}
/**
 * Web-compatible ExecutionEventBus using EventTarget.
 * Works across all modern runtimes: Node.js 15+, browsers, Cloudflare Workers, Deno, Bun.
 *
 * This implementation provides the subset of EventEmitter methods defined in the
 * ExecutionEventBus interface. Users extending DefaultExecutionEventBus should note
 * that other EventEmitter methods (e.g., listenerCount, rawListeners) are not available.
 */
declare class DefaultExecutionEventBus extends EventTarget implements ExecutionEventBus {
    private readonly eventListeners;
    private readonly finishedListeners;
    publish(event: AgentExecutionEvent): void;
    finished(): void;
    /**
     * EventEmitter-compatible 'on' method.
     * Wraps the listener to extract event detail from CustomEvent.
     * Supports multiple registrations of the same listener (like EventEmitter).
     * @param eventName The event name to listen for.
     * @param listener The callback function to invoke when the event is emitted.
     * @returns This instance for method chaining.
     */
    on(eventName: ExecutionEventName, listener: (event: AgentExecutionEvent) => void): this;
    /**
     * EventEmitter-compatible 'off' method.
     * Uses the stored wrapped listener for proper removal.
     * Removes at most one instance of a listener per call (like EventEmitter).
     * @param eventName The event name to stop listening for.
     * @param listener The callback function to remove.
     * @returns This instance for method chaining.
     */
    off(eventName: ExecutionEventName, listener: (event: AgentExecutionEvent) => void): this;
    /**
     * EventEmitter-compatible 'once' method.
     * Listener is automatically removed after first invocation.
     * Supports multiple registrations of the same listener (like EventEmitter).
     * @param eventName The event name to listen for once.
     * @param listener The callback function to invoke when the event is emitted.
     * @returns This instance for method chaining.
     */
    once(eventName: ExecutionEventName, listener: (event: AgentExecutionEvent) => void): this;
    /**
     * EventEmitter-compatible 'removeAllListeners' method.
     * Removes all listeners for a specific event or all events.
     * @param eventName Optional event name to remove listeners for. If omitted, removes all.
     * @returns This instance for method chaining.
     */
    removeAllListeners(eventName?: ExecutionEventName): this;
    /**
     * Adds a wrapped listener to the tracking map.
     */
    private trackListener;
    /**
     * Removes a wrapped listener from the tracking map (for once cleanup).
     */
    private untrackWrappedListener;
    private addEventListenerInternal;
    private removeEventListenerInternal;
    private addEventListenerOnceInternal;
    private addFinishedListenerInternal;
    private removeFinishedListenerInternal;
    private addFinishedListenerOnceInternal;
}

declare class RequestContext {
    readonly userMessage: Message;
    readonly taskId: string;
    readonly contextId: string;
    readonly task?: Task;
    readonly referenceTasks?: Task[];
    readonly context?: ServerCallContext;
    constructor(userMessage: Message, taskId: string, contextId: string, task?: Task, referenceTasks?: Task[], context?: ServerCallContext);
}

interface AgentExecutor {
    /**
     * Executes the agent logic based on the request context and publishes events.
     * @param requestContext The context of the current request.
     * @param eventBus The bus to publish execution events to.
     */
    execute: (requestContext: RequestContext, eventBus: ExecutionEventBus) => Promise<void>;
    /**
     * Method to explicitly cancel a running task.
     * The implementation should handle the logic of stopping the execution
     * and publishing the final 'canceled' status event on the provided event bus.
     * @param taskId The ID of the task to cancel.
     * @param eventBus The event bus associated with the task's execution.
     */
    cancelTask: (taskId: string, eventBus: ExecutionEventBus) => Promise<void>;
}

interface ExecutionEventBusManager {
    createOrGetByTaskId(taskId: string): ExecutionEventBus;
    getByTaskId(taskId: string): ExecutionEventBus | undefined;
    cleanupByTaskId(taskId: string): void;
}
declare class DefaultExecutionEventBusManager implements ExecutionEventBusManager {
    private taskIdToBus;
    /**
     * Creates or retrieves an existing ExecutionEventBus based on the taskId.
     * @param taskId The ID of the task.
     * @returns An instance of ExecutionEventBus.
     */
    createOrGetByTaskId(taskId: string): ExecutionEventBus;
    /**
     * Retrieves an existing ExecutionEventBus based on the taskId.
     * @param taskId The ID of the task.
     * @returns An instance of ExecutionEventBus or undefined if not found.
     */
    getByTaskId(taskId: string): ExecutionEventBus | undefined;
    /**
     * Removes the event bus for a given taskId.
     * This should be called when an execution flow is complete to free resources.
     * @param taskId The ID of the task.
     */
    cleanupByTaskId(taskId: string): void;
}

/**
 * An async queue that subscribes to an ExecutionEventBus for events
 * and provides an async generator to consume them.
 */
declare class ExecutionEventQueue {
    private eventBus;
    private eventQueue;
    private resolvePromise?;
    private stopped;
    private boundHandleEvent;
    constructor(eventBus: ExecutionEventBus);
    private handleEvent;
    private handleFinished;
    /**
     * Provides an async generator that yields events from the event bus.
     * Stops when a Message event is received or a TaskStatusUpdateEvent with final=true is received.
     */
    events(): AsyncGenerator<AgentExecutionEvent, void, undefined>;
    /**
     * Stops the event queue from processing further events.
     */
    stop(): void;
}

/**
 * Simplified interface for task storage providers.
 * Stores and retrieves the task.
 */
interface TaskStore {
    /**
     * Saves a task.
     * Overwrites existing data if the task ID exists.
     * @param task The task to save.
     * @param context The context of the current call.
     * @returns A promise resolving when the save operation is complete.
     */
    save(task: Task, context?: ServerCallContext): Promise<void>;
    /**
     * Loads a task by task ID.
     * @param taskId The ID of the task to load.
     * @param context The context of the current call.
     * @returns A promise resolving to an object containing the Task, or undefined if not found.
     */
    load(taskId: string, context?: ServerCallContext): Promise<Task | undefined>;
}
declare class InMemoryTaskStore implements TaskStore {
    private store;
    load(taskId: string): Promise<Task | undefined>;
    save(task: Task): Promise<void>;
}

interface PushNotificationStore {
    save(taskId: string, pushNotificationConfig: PushNotificationConfig): Promise<void>;
    load(taskId: string): Promise<PushNotificationConfig[]>;
    delete(taskId: string, configId?: string): Promise<void>;
}
declare class InMemoryPushNotificationStore implements PushNotificationStore {
    private store;
    save(taskId: string, pushNotificationConfig: PushNotificationConfig): Promise<void>;
    load(taskId: string): Promise<PushNotificationConfig[]>;
    delete(taskId: string, configId?: string): Promise<void>;
}

interface PushNotificationSender {
    send(task: Task): Promise<void>;
}

declare class DefaultRequestHandler implements A2ARequestHandler {
    private readonly agentCard;
    private readonly taskStore;
    private readonly agentExecutor;
    private readonly eventBusManager;
    private readonly pushNotificationStore?;
    private readonly pushNotificationSender?;
    private readonly extendedAgentCardProvider?;
    constructor(agentCard: AgentCard, taskStore: TaskStore, agentExecutor: AgentExecutor, eventBusManager?: ExecutionEventBusManager, pushNotificationStore?: PushNotificationStore, pushNotificationSender?: PushNotificationSender, extendedAgentCardProvider?: AgentCard | ExtendedAgentCardProvider);
    getAgentCard(): Promise<AgentCard>;
    getAuthenticatedExtendedAgentCard(context?: ServerCallContext): Promise<AgentCard>;
    private _createRequestContext;
    private _processEvents;
    sendMessage(params: MessageSendParams, context?: ServerCallContext): Promise<Message | Task>;
    sendMessageStream(params: MessageSendParams, context?: ServerCallContext): AsyncGenerator<Message | Task | TaskStatusUpdateEvent | TaskArtifactUpdateEvent, void, undefined>;
    getTask(params: TaskQueryParams, context?: ServerCallContext): Promise<Task>;
    cancelTask(params: TaskIdParams, context?: ServerCallContext): Promise<Task>;
    setTaskPushNotificationConfig(params: TaskPushNotificationConfig, context?: ServerCallContext): Promise<TaskPushNotificationConfig>;
    getTaskPushNotificationConfig(params: TaskIdParams | GetTaskPushNotificationConfigParams, context?: ServerCallContext): Promise<TaskPushNotificationConfig>;
    listTaskPushNotificationConfigs(params: ListTaskPushNotificationConfigParams, context?: ServerCallContext): Promise<TaskPushNotificationConfig[]>;
    deleteTaskPushNotificationConfig(params: DeleteTaskPushNotificationConfigParams, context?: ServerCallContext): Promise<void>;
    resubscribe(params: TaskIdParams, context?: ServerCallContext): AsyncGenerator<Task | TaskStatusUpdateEvent | TaskArtifactUpdateEvent, void, undefined>;
    private _sendPushNotificationIfNeeded;
    private _handleProcessingError;
}
type ExtendedAgentCardProvider = (context?: ServerCallContext) => Promise<AgentCard>;

declare class ResultManager {
    private readonly taskStore;
    private readonly serverCallContext?;
    private currentTask?;
    private latestUserMessage?;
    private finalMessageResult?;
    constructor(taskStore: TaskStore, serverCallContext?: ServerCallContext);
    setContext(latestUserMessage: Message): void;
    /**
     * Processes an agent execution event and updates the task store.
     * @param event The agent execution event.
     */
    processEvent(event: AgentExecutionEvent): Promise<void>;
    private saveCurrentTask;
    /**
     * Gets the final result, which could be a Message or a Task.
     * This should be called after the event stream has been fully processed.
     * @returns The final Message or the current Task.
     */
    getFinalResult(): Message | Task | undefined;
    /**
     * Gets the task currently being managed by this ResultManager instance.
     * This task could be one that was started with or one created during agent execution.
     * @returns The current Task or undefined if no task is active.
     */
    getCurrentTask(): Task | undefined;
}

interface DefaultPushNotificationSenderOptions {
    /**
     * Timeout in milliseconds for the abort controller. Defaults to 5000ms.
     */
    timeout?: number;
    /**
     * Custom header name for the token. Defaults to 'X-A2A-Notification-Token'.
     */
    tokenHeaderName?: string;
}
declare class DefaultPushNotificationSender implements PushNotificationSender {
    private readonly pushNotificationStore;
    private notificationChain;
    private readonly options;
    constructor(pushNotificationStore: PushNotificationStore, options?: DefaultPushNotificationSenderOptions);
    send(task: Task): Promise<void>;
    private _dispatchNotification;
}

export { A2ARequestHandler, type AgentExecutionEvent, type AgentExecutor, DefaultExecutionEventBus, DefaultExecutionEventBusManager, DefaultPushNotificationSender, type DefaultPushNotificationSenderOptions, DefaultRequestHandler, type ExecutionEventBus, type ExecutionEventBusManager, type ExecutionEventName, ExecutionEventQueue, type ExtendedAgentCardProvider, InMemoryPushNotificationStore, InMemoryTaskStore, type PushNotificationSender, type PushNotificationStore, RequestContext, ResultManager, ServerCallContext, type TaskStore };