/**
 * Approval Store implementations
 *
 * Features:
 * - In-memory store for development/testing
 * - File-based store for persistence
 * - Response callbacks for async notifications
 * - TTL-based cleanup
 */
import type { ApprovalStore, ApprovalRequest, ApprovalResponse } from '@cogitator-ai/types';
/**
 * In-memory approval store for development and testing
 */
export declare class InMemoryApprovalStore implements ApprovalStore {
    private requests;
    private responses;
    private callbacks;
    private ttl;
    private cleanupInterval?;
    constructor(options?: {
        ttl?: number;
        cleanupInterval?: number;
    });
    createRequest(request: ApprovalRequest): Promise<void>;
    getRequest(id: string): Promise<ApprovalRequest | null>;
    getPendingRequests(workflowId?: string): Promise<ApprovalRequest[]>;
    getPendingForAssignee(assignee: string): Promise<ApprovalRequest[]>;
    submitResponse(response: ApprovalResponse): Promise<void>;
    getResponse(requestId: string): Promise<ApprovalResponse | null>;
    deleteRequest(id: string): Promise<void>;
    onResponse(requestId: string, callback: (response: ApprovalResponse) => void): () => void;
    /**
     * Clean up expired requests
     */
    private cleanup;
    /**
     * Stop cleanup interval
     */
    dispose(): void;
    /**
     * Get all requests (for debugging)
     */
    getAllRequests(): ApprovalRequest[];
    /**
     * Get all responses (for debugging)
     */
    getAllResponses(): ApprovalResponse[];
    /**
     * Clear all data
     */
    clear(): void;
}
/**
 * File-based approval store for persistence across restarts
 */
export declare class FileApprovalStore implements ApprovalStore {
    private readonly directory;
    private callbacks;
    private watchInterval?;
    private lastResponseCheck;
    private firedCallbacks;
    constructor(options: {
        directory: string;
        pollInterval?: number;
    });
    private sanitizeId;
    private getRequestPath;
    private getResponsePath;
    createRequest(request: ApprovalRequest): Promise<void>;
    getRequest(id: string): Promise<ApprovalRequest | null>;
    getPendingRequests(workflowId?: string): Promise<ApprovalRequest[]>;
    getPendingForAssignee(assignee: string): Promise<ApprovalRequest[]>;
    submitResponse(response: ApprovalResponse): Promise<void>;
    getResponse(requestId: string): Promise<ApprovalResponse | null>;
    deleteRequest(id: string): Promise<void>;
    onResponse(requestId: string, callback: (response: ApprovalResponse) => void): () => void;
    /**
     * Check for new responses (called by poll interval)
     */
    private checkForResponses;
    /**
     * Stop polling
     */
    dispose(): void;
    /**
     * Clean up expired requests
     */
    cleanup(maxAge: number): Promise<number>;
}
export declare function withDelegation(store: ApprovalStore, options?: {
    onDelegation?: (request: ApprovalRequest, from: string, to: string) => Promise<void>;
}): ApprovalStore;
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