/**
 * Workflow Scheduler (FEAT-004)
 *
 * Handles scheduled workflow execution with cron-based scheduling.
 * Executes workflows at scheduled intervals and delivers results via webhooks.
 */
import type { ScheduledWorkflow, CreateScheduledWorkflowRequest, UpdateScheduledWorkflowRequest, ScheduledWorkflowExecution, Workflow } from '../types/workflow.js';
import type { SmartBrowser } from './smart-browser.js';
/**
 * Workflow Scheduler
 */
export declare class WorkflowScheduler {
    private smartBrowser;
    private tenantId;
    private scheduledWorkflows;
    private executions;
    private timers;
    private workflows;
    constructor(smartBrowser: SmartBrowser, tenantId: string);
    /**
     * Create a new scheduled workflow
     */
    createScheduledWorkflow(request: CreateScheduledWorkflowRequest): Promise<ScheduledWorkflow>;
    /**
     * Update a scheduled workflow
     */
    updateScheduledWorkflow(id: string, request: UpdateScheduledWorkflowRequest): Promise<ScheduledWorkflow>;
    /**
     * Delete a scheduled workflow
     */
    deleteScheduledWorkflow(id: string): Promise<void>;
    /**
     * Get a scheduled workflow by ID
     */
    getScheduledWorkflow(id: string): ScheduledWorkflow | undefined;
    /**
     * List all scheduled workflows for tenant
     */
    listScheduledWorkflows(): ScheduledWorkflow[];
    /**
     * Get execution history for a scheduled workflow
     */
    getExecutionHistory(scheduledWorkflowId: string, limit?: number): ScheduledWorkflowExecution[];
    /**
     * Register a workflow for replay
     */
    registerWorkflow(workflow: Workflow): void;
    /**
     * Schedule the next execution
     */
    private scheduleExecution;
    /**
     * Cancel a scheduled execution
     */
    private cancelExecution;
    /**
     * Execute a workflow
     */
    private executeWorkflow;
    /**
     * Deliver webhook notification
     */
    private deliverWebhook;
    /**
     * Generate unique ID
     */
    private generateId;
    /**
     * Delay helper for retries
     */
    private delay;
    /**
     * Stop all scheduled executions
     */
    shutdown(): void;
}
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