import { EventEmitter } from "node:events";
import { ProtoObject } from "./proto-object.js";
import type { ProtoObjectDynamicMethods } from "../types/dynamic-methods.js";
/**
 * File operation types
 */
export declare enum FileOperationType {
    SAVE = "SAVE",
    LOAD = "LOAD",
    DELETE = "DELETE",
    WATCH = "WATCH"
}
/**
 * File formats supported
 */
export declare enum FileFormat {
    JSON = ".json",
    CSV = ".csv",
    TEXT = ".txt"
}
/**
 * File operation result
 */
export interface FileOperationResult {
    success: boolean;
    operation: FileOperationType;
    filePath: string;
    error?: Error;
}
/**
 * Static methods interface for FS ProtoObject classes
 */
export interface ProtoObjectFSStaticMethods<T extends ProtoObjectDynamicMethods<T>> {
    new (data?: Partial<T>): T;
    fromJSON<U extends ProtoObjectDynamicMethods<U>>(data: {
        [key: string]: unknown;
    }): U;
    loadFromFile<U extends ProtoObjectDynamicMethods<U>>(filePath: string): Promise<U>;
    loadManyFromDirectory<U extends ProtoObjectDynamicMethods<U>>(directoryPath: string): Promise<U[]>;
}
/**
 * CSV field mapping for exports
 */
export interface CSVFieldMapping {
    [propertyName: string]: string;
}
/**
 * File system watcher for ProtoObject files
 */
export declare class ProtoObjectFileWatcher extends EventEmitter {
    private watchers;
    /**
     * Watch a file for changes
     */
    watchFile(filePath: string): void;
    /**
     * Stop watching a file
     */
    unwatchFile(filePath: string): void;
    /**
     * Stop watching all files
     */
    unwatchAll(): void;
}
/**
 * Base class for File System enabled ProtoObjects
 */
export declare class ProtoObjectFS<T extends ProtoObjectDynamicMethods<T>> extends ProtoObject<T> {
    constructor(data?: Partial<T>);
    /**
     * Save object to file
     */
    saveToFile(filePath: string, format?: FileFormat): Promise<FileOperationResult>;
    /**
     * Load object from file
     */
    static loadFromFile<U extends ProtoObjectDynamicMethods<U>>(filePath: string): Promise<U>;
    /**
     * Load multiple objects from directory
     */
    static loadManyFromDirectory<U extends ProtoObjectDynamicMethods<U>>(directoryPath: string, pattern?: string): Promise<U[]>;
    /**
     * Delete file
     */
    deleteFile(filePath: string): Promise<FileOperationResult>;
    /**
     * Save multiple objects to directory
     */
    static saveManyToDirectory<T extends ProtoObjectFS<T>>(objects: T[], directoryPath: string, fileNameGenerator?: (obj: T, index: number) => string): Promise<FileOperationResult[]>;
    /**
     * Convert to CSV format
     */
    toCSV(fieldMapping?: CSVFieldMapping): string;
    /**
     * Batch save with streaming for large datasets
     */
    static saveManyToFileStream<T extends ProtoObjectFS<T>>(objects: T[], filePath: string, format?: FileFormat): Promise<FileOperationResult>;
    /**
     * Load large datasets with streaming
     */
    static loadManyFromFileStream<U extends ProtoObjectDynamicMethods<U>>(filePath: string, callback: (object: U) => void | Promise<void>): Promise<void>;
    /**
     * Create backup of object with timestamp
     */
    createBackup(backupDirectory: string): Promise<FileOperationResult>;
}