/**
 * Configuration management for the MCP server
 * Handles environment variables and configuration loading
 */

export interface NASConfig {
  host?: string;
  username?: string;
  password?: string;
  protocol?: 'smb' | 'ftp' | 'sftp';
}

export interface ServerConfig {
  host?: string;
  username?: string;
  port?: number;
  keyPath?: string;
}

export interface RouterConfig {
  host?: string;
  username?: string;
  password?: string;
}

export interface EmailConfig {
  host?: string;
  port?: number;
  user?: string;
  password?: string;
  from?: string;
  secure?: boolean;
}

export interface AppConfig {
  nas: NASConfig;
  server: ServerConfig;
  router: RouterConfig;
  email: EmailConfig;
  footballApiKey?: string;
  gameApiKey?: string;
}

class ConfigManager {
  private config: AppConfig;

  constructor() {
    this.config = this.loadConfig();
  }

  private loadConfig(): AppConfig {
    return {
      nas: {
        host: process.env.NAS_HOST,
        username: process.env.NAS_USERNAME,
        password: process.env.NAS_PASSWORD,
        protocol: (process.env.NAS_PROTOCOL as 'smb' | 'ftp' | 'sftp') || 'smb',
      },
      server: {
        host: process.env.SERVER_HOST,
        username: process.env.SERVER_USERNAME,
        port: process.env.SERVER_PORT ? parseInt(process.env.SERVER_PORT) : 22,
        keyPath: process.env.SERVER_KEY_PATH,
      },
      router: {
        host: process.env.ROUTER_HOST,
        username: process.env.ROUTER_USERNAME,
        password: process.env.ROUTER_PASSWORD,
      },
      email: {
        host: process.env.EMAIL_HOST,
        port: process.env.EMAIL_PORT ? parseInt(process.env.EMAIL_PORT) : 587,
        user: process.env.EMAIL_USER,
        password: process.env.EMAIL_PASSWORD,
        from: process.env.EMAIL_FROM,
        secure: process.env.EMAIL_SECURE === 'true',
      },
      footballApiKey: process.env.FOOTBALL_API_KEY,
      gameApiKey: process.env.GAME_API_KEY,
    };
  }

  getConfig(): AppConfig {
    return this.config;
  }

  getNASConfig(): NASConfig {
    return this.config.nas;
  }

  getServerConfig(): ServerConfig {
    return this.config.server;
  }

  getRouterConfig(): RouterConfig {
    return this.config.router;
  }

  getEmailConfig(): EmailConfig {
    return this.config.email;
  }

  reload(): void {
    this.config = this.loadConfig();
  }
}

export const configManager = new ConfigManager();