import { Repository } from 'typeorm';
import { FileEntity } from '../entities/file.entity';
import { PendingUploadEntity } from '../entities/pending-upload.entity';
import { StorageUsageEntity } from '../entities/storage-usage.entity';
import { S3Provider } from '../providers/s3.provider';
import { GetUploadUrlDto, ConfirmUploadDto, ListFilesDto, UpdateFileDto, PresignedUrlResponseDto, FileResponseDto, FileListResponseDto, DownloadUrlResponseDto, StorageUsageResponseDto } from '../dto';
export declare class StorageService {
    private readonly fileRepository;
    private readonly pendingUploadRepository;
    private readonly usageRepository;
    private readonly s3Provider;
    private readonly logger;
    constructor(fileRepository: Repository<FileEntity>, pendingUploadRepository: Repository<PendingUploadEntity>, usageRepository: Repository<StorageUsageEntity>, s3Provider: S3Provider);
    getUploadUrl(tenantId: string, userId: string, dto: GetUploadUrlDto): Promise<PresignedUrlResponseDto>;
    confirmUpload(tenantId: string, userId: string, dto: ConfirmUploadDto): Promise<FileResponseDto>;
    listFiles(tenantId: string, dto: ListFilesDto): Promise<FileListResponseDto>;
    getFile(tenantId: string, fileId: string): Promise<FileResponseDto>;
    getDownloadUrl(tenantId: string, fileId: string): Promise<DownloadUrlResponseDto>;
    updateFile(tenantId: string, fileId: string, dto: UpdateFileDto): Promise<FileResponseDto>;
    deleteFile(tenantId: string, fileId: string): Promise<void>;
    getUsage(tenantId: string): Promise<StorageUsageResponseDto>;
    private isAllowedMimeType;
    private hasBlockedExtension;
    private sanitizeFilename;
    private canUpload;
    private formatBytes;
    private toFileResponse;
}