@diagramers/api/src/core/app.ts

Diagramers API - A comprehensive Node.js API template with TypeScript, Firebase Functions, and Socket.io

import { ConfigManager } from './config';
import { DatabaseManager } from './database/connection';
import { ServerManager } from './server/manager';
import { PluginManager } from '../plugins/base/manager';
import { logger } from './logging';

export class Application {
  private configManager: ConfigManager;
  private databaseManager: DatabaseManager;
  private pluginManager: PluginManager;
  private serverManager: ServerManager;

  constructor() {
    this.configManager = new ConfigManager();
  }

  async initialize(): Promise<void> {
    try {
      logger.info('[Application] Starting application initialization...');

      // Load configuration
      const config = await this.configManager.load();
      logger.info('[Application] Configuration loaded');

      // Initialize database manager
      this.databaseManager = new DatabaseManager(config.database);
      await this.databaseManager.initialize();
      logger.info('[Application] Database initialized');

      // Initialize plugin manager
      const pluginContext = {
        config,
        logger,
        database: this.databaseManager,
        services: {}
      };

      this.pluginManager = PluginManager.getInstance(
        { pluginsPath: './plugins', autoLoad: true, hotReload: false },
        pluginContext
      );
      logger.info('[Application] Plugin manager initialized');

      // Initialize server manager
      const serverConfig = {
        port: config.port,
        host: config.host,
        cors: true, // Always enable CORS for now
        compression: config.security.compression,
        security: config.security.helmet
      };

      this.serverManager = new ServerManager(serverConfig, this.pluginManager);
      await this.serverManager.initialize();
      logger.info('[Application] Server initialized');

      logger.info('[Application] Application initialization completed');
    } catch (error) {
      logger.error('[Application] Failed to initialize application:', error);
      throw error;
    }
  }

  async start(): Promise<void> {
    try {
      logger.info('[Application] Starting application...');
      await this.serverManager.start();
      logger.info('[Application] Application started successfully');
    } catch (error) {
      logger.error('[Application] Failed to start application:', error);
      throw error;
    }
  }

  async stop(): Promise<void> {
    try {
      logger.info('[Application] Stopping application...');
      
      if (this.serverManager) {
        await this.serverManager.stop();
      }
      
      if (this.pluginManager) {
        await this.pluginManager.stopPlugins();
      }
      
      if (this.databaseManager) {
        await this.databaseManager.closeAll();
      }
      
      logger.info('[Application] Application stopped successfully');
    } catch (error) {
      logger.error('[Application] Error stopping application:', error);
      throw error;
    }
  }

  getConfigManager(): ConfigManager {
    return this.configManager;
  }

  getDatabaseManager(): DatabaseManager {
    return this.databaseManager;
  }

  getPluginManager(): PluginManager {
    return this.pluginManager;
  }

  getServerManager(): ServerManager {
    return this.serverManager;
  }
}