import { HttpService } from '@nestjs/axios';
import { ConfigService } from '@nestjs/config';
export interface SensitiveEntity {
    original: string;
    anonymized: string;
    entityType: string;
    start: number;
    end: number;
}
export declare class AnonymizerService {
    private readonly http;
    private readonly configService;
    private readonly logger;
    private entityMap;
    constructor(http: HttpService, configService: ConfigService);
    /**
     * Analyzes text for sensitive information, anonymizes it, and maintains a mapping
     * for later deanonymization
     */
    anonymizeText(text: string): Promise<{
        anonymizedText: string;
        entitiesFound: boolean;
    }>;
    /**
     * Deanonymizes text by replacing anonymized values with original values
     */
    deanonymizeText(anonymizedText: string): string;
    /**
     * Returns all sensitive entities found in the last anonymization
     */
    getSensitiveEntities(): SensitiveEntity[];
    /**
     * Clear the entity mapping
     */
    clearEntityMapping(): void;
    /**
     * Analyzes text to identify sensitive information
     */
    private analyzeText;
    /**
     * Builds configuration for the anonymizer based on entity types
     */
    private buildAnonymizersConfig;
    /**
     * Builds a mapping between original and anonymized entities
     */
    private buildEntityMapping;
    /**
     * Finds the best match for a given entity type from all detected entities
     */
    private findBestMatch;
}