import { OnModuleInit } from '@nestjs/common';
import { ConfigService } from '@nestjs/config';
export interface StoredFileResult {
    bucket: string;
    objectName: string;
    url: string;
}
export declare class StorageService implements OnModuleInit {
    private readonly configService;
    private readonly logger;
    private readonly client;
    private readonly publicBucket;
    private readonly privateBucket;
    private readonly publicUrl?;
    constructor(configService: ConfigService);
    onModuleInit(): Promise<void>;
    uploadPublicFile(file: Express.Multer.File, folder?: string): Promise<StoredFileResult>;
    uploadPrivateFile(file: Express.Multer.File, folder?: string): Promise<StoredFileResult>;
    deleteFile(bucket: string, objectName: string): Promise<void>;
    deletePublicFileByUrl(fileUrl?: string | null): Promise<void>;
    extractObjectName(fileUrl: string, bucket: string): string | null;
    private upload;
    private ensureBucket;
    private buildPublicUrl;
}