import { DBDockConfigService } from '../config/config.service';
import { StorageService } from '../storage/storage.service';
import { BackupService } from '../backup/backup.service';
import { WalArchiverService } from './wal-archiver.service';
import { RetentionPolicy, CleanupResult, BackupRetentionInfo } from './retention.types';
export declare class RetentionService {
    private configService;
    private storageService;
    private backupService;
    private walArchiverService;
    private readonly logger;
    constructor(configService: DBDockConfigService, storageService: StorageService, backupService: BackupService, walArchiverService: WalArchiverService);
    getDefaultRetentionPolicy(): RetentionPolicy;
    applyRetentionPolicy(policy?: RetentionPolicy): Promise<CleanupResult>;
    private cleanupOldBackups;
    private evaluateBackupRetention;
    getRetentionReport(): Promise<{
        backups: BackupRetentionInfo[];
        totalBackups: number;
        backupsToDelete: number;
        spaceToReclaim: number;
    }>;
}