@zenithcore/dcloud/src/core/DCloudClient.ts

Decentralized cloud infrastructure for ZenithKernel with IPFS, enterprise storage, and distributed websites

/**
 * DCloudClient - Main client for interacting with ZenithCore DCloud
 * 
 * Provides high-level APIs for:
 * - File storage and retrieval
 * - Website hosting
 * - Enterprise data management
 * - P2P networking
 */

import { EventEmitter } from 'events';

export interface DCloudConfig {
  nodeUrl?: string;
  apiKey?: string;
  encryption?: boolean;
  compression?: boolean;
  replication?: number;
  timeout?: number;
}

export interface StorageOptions {
  encrypt?: boolean;
  compress?: boolean;
  pin?: boolean;
  replicate?: number;
  metadata?: Record<string, any>;
}

export interface WebsiteOptions {
  domain?: string;
  ssl?: boolean;
  cdn?: boolean;
  caching?: boolean;
  redirects?: Record<string, string>;
}

/**
 * Main DCloud Client
 */
export class DCloudClient extends EventEmitter {
  private config: Required<DCloudConfig>;
  private connected: boolean = false;
  private nodeId: string | null = null;

  constructor(config: DCloudConfig = {}) {
    super();
    
    this.config = {
      nodeUrl: config.nodeUrl || 'http://localhost:5001',
      apiKey: config.apiKey || '',
      encryption: config.encryption ?? true,
      compression: config.compression ?? true,
      replication: config.replication ?? 3,
      timeout: config.timeout ?? 30000
    };
  }

  /**
   * Connect to DCloud network
   */
  async connect(): Promise<void> {
    try {
      console.log('🌐 Connecting to DCloud network...');
      
      // Future: Implement actual IPFS connection
      this.connected = true;
      this.nodeId = this.generateNodeId();
      
      this.emit('connected', { nodeId: this.nodeId });
      console.log('✅ Connected to DCloud network');
      console.log('🆔 Node ID:', this.nodeId);
      
    } catch (error) {
      this.emit('error', error);
      throw new Error(`Failed to connect to DCloud: ${error}`);
    }
  }

  /**
   * Disconnect from DCloud network
   */
  async disconnect(): Promise<void> {
    if (!this.connected) return;
    
    console.log('🔌 Disconnecting from DCloud network...');
    
    // Future: Implement actual disconnection
    this.connected = false;
    this.nodeId = null;
    
    this.emit('disconnected');
    console.log('✅ Disconnected from DCloud network');
  }

  /**
   * Store data in DCloud
   */
  async store(data: Uint8Array | string, options: StorageOptions = {}): Promise<string> {
    this.ensureConnected();
    
    const opts = {
      encrypt: options.encrypt ?? this.config.encryption,
      compress: options.compress ?? this.config.compression,
      pin: options.pin ?? true,
      replicate: options.replicate ?? this.config.replication,
      metadata: options.metadata ?? {}
    };
    
    console.log('💾 Storing data in DCloud...');
    console.log('📊 Options:', opts);
    
    // Future: Implement actual IPFS storage
    const hash = this.generateHash(data);
    
    this.emit('stored', { hash, options: opts });
    console.log('✅ Data stored with hash:', hash);
    
    return hash;
  }

  /**
   * Retrieve data from DCloud
   */
  async retrieve(hash: string): Promise<Uint8Array> {
    this.ensureConnected();
    
    console.log('📥 Retrieving data from DCloud...');
    console.log('🔗 Hash:', hash);
    
    // Future: Implement actual IPFS retrieval
    const data = new Uint8Array([1, 2, 3, 4, 5]); // Placeholder
    
    this.emit('retrieved', { hash, size: data.length });
    console.log('✅ Data retrieved successfully');
    
    return data;
  }

  /**
   * Deploy website to DCloud
   */
  async deployWebsite(files: Map<string, Uint8Array>, options: WebsiteOptions = {}): Promise<string> {
    this.ensureConnected();
    
    const opts = {
      domain: options.domain,
      ssl: options.ssl ?? true,
      cdn: options.cdn ?? true,
      caching: options.caching ?? true,
      redirects: options.redirects ?? {}
    };
    
    console.log('🌐 Deploying website to DCloud...');
    console.log('📁 Files:', files.size);
    console.log('⚙️ Options:', opts);
    
    // Future: Implement actual website deployment
    const websiteHash = this.generateHash(`website-${Date.now()}`);
    const url = opts.domain || `${websiteHash}.dcloud.zenith`;
    
    this.emit('websiteDeployed', { hash: websiteHash, url, options: opts });
    console.log('✅ Website deployed successfully');
    console.log('🔗 URL:', url);
    
    return websiteHash;
  }

  /**
   * List stored files
   */
  async listFiles(): Promise<Array<{ hash: string; size: number; metadata: any }>> {
    this.ensureConnected();
    
    console.log('📋 Listing stored files...');
    
    // Future: Implement actual file listing
    const files = [
      { hash: 'QmExample1', size: 1024, metadata: { name: 'example1.txt' } },
      { hash: 'QmExample2', size: 2048, metadata: { name: 'example2.json' } }
    ];
    
    this.emit('filesListed', { count: files.length });
    console.log('✅ Files listed successfully');
    
    return files;
  }

  /**
   * Get network statistics
   */
  async getNetworkStats(): Promise<{
    peers: number;
    storage: number;
    bandwidth: { up: number; down: number };
  }> {
    this.ensureConnected();
    
    // Future: Implement actual network stats
    const stats = {
      peers: Math.floor(Math.random() * 100) + 10,
      storage: Math.floor(Math.random() * 1000000) + 100000,
      bandwidth: {
        up: Math.floor(Math.random() * 1000) + 100,
        down: Math.floor(Math.random() * 1000) + 100
      }
    };
    
    this.emit('statsUpdated', stats);
    return stats;
  }

  /**
   * Check if client is connected
   */
  isConnected(): boolean {
    return this.connected;
  }

  /**
   * Get node ID
   */
  getNodeId(): string | null {
    return this.nodeId;
  }

  /**
   * Get configuration
   */
  getConfig(): Required<DCloudConfig> {
    return { ...this.config };
  }

  /**
   * Ensure client is connected
   */
  private ensureConnected(): void {
    if (!this.connected) {
      throw new Error('DCloud client is not connected. Call connect() first.');
    }
  }

  /**
   * Generate a mock node ID
   */
  private generateNodeId(): string {
    return `12D3KooW${Math.random().toString(36).substring(2, 15)}`;
  }

  /**
   * Generate a mock hash
   */
  private generateHash(data: any): string {
    const str = typeof data === 'string' ? data : JSON.stringify(data);
    return `Qm${Math.random().toString(36).substring(2, 15)}${str.length}`;
  }
}

/**
 * Create a new DCloud client instance
 */
export function createDCloudClient(config?: DCloudConfig): DCloudClient {
  return new DCloudClient(config);
}