import { HttpService } from '@nestjs/axios';
import { ExportOptions, ImportOptions, ExportResult, ImportResult, DataExportPackage, SchemaDefinition } from './data-transfer.interfaces';
export interface DataTransferOptions {
    basePath?: string;
    defaultFormat?: 'json' | 'csv' | 'xml';
    encryption?: {
        algorithm: string;
        secretKey?: string;
    };
    compression?: {
        enabled: boolean;
        level?: number;
    };
    validation?: {
        enabled: boolean;
        strictMode?: boolean;
    };
    global?: boolean;
}
export declare class DataTransferService {
    private options;
    private readonly httpService?;
    private readonly logger;
    private readonly defaultOptions;
    constructor(options?: DataTransferOptions, httpService?: HttpService);
    exportData<T = any>(data: T, options?: ExportOptions): Promise<ExportResult<T>>;
    importData<T = any>(source: string | Buffer | DataExportPackage<T>, options?: ImportOptions): Promise<ImportResult<T>>;
    createSchemaFromSample(sample: any, additionalProperties?: boolean): SchemaDefinition;
    private validateImportData;
    private calculateChecksum;
    private serializeData;
    private deserializeData;
    private parseCSVLine;
    private encryptData;
    private decryptData;
    private saveToFile;
    private readFromFile;
    private sendToHttp;
    private fetchFromHttp;
    private getContentTypeForFormat;
}