import { GsbFile, FileType } from '../../models/gsb-file.model';
export declare const DEFAULT_FOLDER_TYPE = FileType.Cloud_AWS;
/**
 * Service for managing Files and Storage in the application
 */
export declare class GsbFileService {
    private static instance;
    private entityService;
    private ENTITY_NAME;
    constructor();
    static getInstance(): GsbFileService;
    /**
     * Get file by ID
     * @param id The file ID
     * @returns The file or null if not found
     */
    getFileById(id: string): Promise<GsbFile | null>;
    /**
     * Get files in a folder
     * @param folderId The parent folder ID (null or undefined for root)
     * @param page The page number (starting from 1)
     * @param pageSize The number of items per page
     * @returns An array of files and the total count
     */
    getFiles(folderId?: string, page?: number, pageSize?: number): Promise<{
        files: GsbFile[];
        totalCount: number;
    }>;
    /**
     * Search for files
     * @param searchTerm The search term
     * @param page The page number (starting from 1)
     * @param pageSize The number of items per page
     * @returns An array of files and the total count
     */
    searchFiles(searchTerm: string, page?: number, pageSize?: number): Promise<{
        files: GsbFile[];
        totalCount: number;
    }>;
    /**
     * Create a new folder
     * @param name The folder name
     * @param parentId The parent folder ID (optional)
     * @returns The created folder ID or null if failed
     */
    createFolder(name: string, parentId?: string, parentPath?: string): Promise<string | null>;
    /**
     * Upload a file
     * @param file The file to upload
     * @param name The file name (optional, defaults to file.name)
     * @param parentId The parent folder ID (optional)
     * @returns The uploaded file ID or null if failed
     */
    uploadFile(file: File, entity: GsbFile): Promise<GsbFile | null>;
    /**
     * Delete a file or folder
     * @param id The file or folder ID to delete
     * @returns True if deleted successfully, false otherwise
     */
    deleteFile(id: string): Promise<boolean>;
    /**
     * Get file content
     * @param id The file ID
     * @returns The file content or null if failed
     */
    getFileContent(id: string): Promise<Blob | null>;
}