import { AuditLogEntry, DataHandlingConfig } from '../types/index.js';
import { Logger } from './Logger.js';
export declare class DataHandler {
    private readonly config;
    private readonly logger;
    private readonly audit;
    private readonly sessionId;
    private readonly userId?;
    private readonly ipAddress?;
    private readonly userAgent?;
    constructor(config: DataHandlingConfig, logger: Logger, identity?: {
        sessionId?: string;
        userId?: string;
        ipAddress?: string;
        userAgent?: string;
    });
    private generateId;
    generateHash(input: string): string;
    getAuditLog(): AuditLogEntry[];
    recordAuditEvent(params: {
        operation: string;
        resource: string;
        action: string;
        result: 'success' | 'failure' | 'denied';
        evidence?: string;
        dataHash: string;
        extra?: Record<string, any>;
    }): void;
    /**
     * Create an audit log entry (legacy method for compatibility)
     */
    createAuditEntry(operation: string, resource: string, action: string, result: 'success' | 'failure' | 'denied', data?: any): AuditLogEntry;
    /**
     * Redact sensitive data from input
     */
    redactSensitiveData(data: string): {
        redactedData: string;
        redactions: Map<string, string>;
    };
    /**
     * Tokenize code snippets to reduce size and scope
     */
    tokenizeCode(code: string): {
        tokenizedCode: string;
        tokens: Map<string, string>;
    };
    /**
     * Process data for AI analysis with all security controls
     */
    processForAI(data: string, context: string, operation: string): {
        processedData: string;
        auditEntry: AuditLogEntry;
        redactions: Map<string, string>;
        tokens: Map<string, string>;
    };
    /**
     * Restore original data from tokens and redactions
     */
    restoreData(processedData: string, redactions: Map<string, string>, tokens: Map<string, string>): string;
    /**
     * Get privacy statement
     */
    getPrivacyStatement(): string;
    /**
     * Clean up old audit logs based on retention policy
     */
    cleanupOldAuditLogs(): void;
    /**
     * Get audit log statistics
     */
    getAuditStats(): {
        totalEntries: number;
        sessionId: string;
        oldestEntry?: string;
        newestEntry?: string;
    };
}
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