import * as plugins from './smartnginx.plugins';
import * as paths from './smartnginx.paths';
import * as snippets from './smartnginx.snippets';
import { NginxHost } from './smartnginx.classes.nginxhost';
import { NginxProcess } from './smartnginx.classes.nginxprocess';
import { IHostConfig } from './interfaces/hostconfig';

/**
 * main class that manages a NginxInstance
 */
export class SmartNginx {
  public logger: plugins.smartlog.Smartlog;
  private hosts = new plugins.lik.Objectmap<NginxHost>();
  public nginxProcess: NginxProcess = new NginxProcess(this);
  constructor(optionsArg: { logger?: plugins.smartlog.Smartlog }) {
    optionsArg.logger
      ? (this.logger = optionsArg.logger)
      : (this.logger = plugins.smartlog.defaultLogger);
  }

  // ===================
  // interact with Hosts
  // ===================

  /**
   * add a host
   * @param nginxHostArg
   */
  public addHost(optionsArg: IHostConfig): NginxHost {
    const nginxHost = new NginxHost(this, optionsArg);
    this.hosts.add(nginxHost);
    return nginxHost;
  }

  /**
   * Gets a NginxHost by hostname
   * @param hostNameArg
   */
  public getNginxHostByHostName(hostNameArg: string): NginxHost {
    return this.hosts.find(nginxHost => {
      return nginxHost.hostName === hostNameArg;
    });
  }
  /**
   * listHosts
   */
  public listHosts(): NginxHost[] {
    return this.hosts.getArray();
  }

  /**
   * remove a Host
   * @param nginxHostArg
   */
  public removeHost(nginxHostArg: NginxHost) {
    this.hosts.remove(nginxHostArg);
  }

  /**
   * clean all hosts
   */
  public wipeHosts() {
    this.hosts.wipe();
  }

  /**
   * deploy the current stack and restart nginx
   */
  public async deploy() {
    // write base config
    plugins.smartfile.fs.ensureDirSync(paths.nginxConfigDirPath);
    plugins.smartfile.memory.toFsSync(snippets.getBaseConfigString(), paths.nginxConfFile);

    // deploy hosts
    plugins.smartfile.fs.ensureEmptyDirSync(paths.nginxHostDirPath);
    for (const host of this.hosts.getArray()) {
      await host.deploy();
      this.logger.log('info', `Host ${host.hostName} deployed!`);
    }
    this.nginxProcess.reloadConfig();
  }
}