/**
 * Proof Batch Queue
 *
 * Collects proofs in memory and submits them in batches to KTA and AgentShield.
 * This prevents blocking tool execution while ensuring proofs are eventually submitted.
 *
 * Performance:
 * - Batch size: 10 proofs (configurable)
 * - Flush interval: 5 seconds (configurable)
 * - Fire-and-forget submission (doesn't block tool execution)
 *
 * Retry Strategy:
 * - Exponential backoff: 1s, 2s, 4s, 8s, 16s
 * - Max retries: 5
 * - Failed proofs logged and dropped after max retries
 *
 * Related: PHASE_1_XMCP_I_SERVER.md Epic 3 (Proof Batching)
 */
import { DetachedProof } from '@kya-os/contracts/proof';
/**
 * Proof submission destination
 */
export interface ProofDestination {
    /** Destination name (for logging) */
    name: string;
    /** Submit batch of proofs */
    submit(proofs: DetachedProof[]): Promise<void>;
}
/**
 * KTA proof submission destination
 */
export declare class KTAProofDestination implements ProofDestination {
    name: string;
    private apiUrl;
    private apiKey?;
    constructor(apiUrl: string, apiKey?: string);
    submit(proofs: DetachedProof[]): Promise<void>;
}
/**
 * AgentShield proof submission destination
 *
 * Submits proofs to AgentShield's /api/v1/bouncer/proofs endpoint
 * with proper authentication and session grouping.
 */
export declare class AgentShieldProofDestination implements ProofDestination {
    name: string;
    private apiUrl;
    private apiKey;
    constructor(apiUrl: string, apiKey: string);
    submit(proofs: DetachedProof[]): Promise<void>;
}
/**
 * Proof batch queue configuration
 */
export interface ProofBatchQueueConfig {
    /** Destinations to submit proofs to */
    destinations: ProofDestination[];
    /** Maximum batch size (default: 10) */
    maxBatchSize?: number;
    /** Flush interval in milliseconds (default: 5000 = 5 seconds) */
    flushIntervalMs?: number;
    /** Maximum retries per batch (default: 5) */
    maxRetries?: number;
    /** Enable debug logging */
    debug?: boolean;
}
/**
 * Proof Batch Queue
 *
 * Collects proofs and submits them in batches to multiple destinations
 */
export declare class ProofBatchQueue {
    private queue;
    private pendingBatches;
    private config;
    private flushTimer?;
    private retryTimer?;
    private closed;
    private stats;
    constructor(config: ProofBatchQueueConfig);
    /**
     * Add proof to queue
     */
    enqueue(proof: DetachedProof): void;
    /**
     * Flush queue immediately (submit all queued proofs)
     */
    flush(): Promise<void>;
    /**
     * Submit batch to destination (with retries)
     */
    private submitBatch;
    /**
     * Start flush timer
     */
    private startFlushTimer;
    /**
     * Start retry timer
     */
    private startRetryTimer;
    /**
     * Close queue and flush remaining proofs
     */
    close(): Promise<void>;
    /**
     * Get queue statistics
     */
    getStats(): {
        queueSize: number;
        pendingBatches: number;
        queued: number;
        submitted: number;
        failed: number;
        batchesSubmitted: number;
    };
}
/**
 * Create proof batch queue from config
 */
export declare function createProofBatchQueue(config: ProofBatchQueueConfig): ProofBatchQueue;