import * as plugins from './smartnginx.plugins';
import * as paths from './smartnginx.paths';
import { SmartNginx } from './smartnginx.classes.smartnginx';
import { NginxHost } from './smartnginx.classes.nginxhost';

import { Smartshell } from '@pushrocks/smartshell';

/**
 * manages a nginxprocess for an NginxConfig
 */
export class NginxProcess {
  started: boolean = false;
  nginxConfig: SmartNginx;
  nginxChildProcess: plugins.childProcess.ChildProcess;
  smartshellInstance = new Smartshell({
    executor: 'bash'
  });
  constructor(nginxConfigArg) {
    this.nginxConfig = nginxConfigArg;
  }

  /**
   * start nginx
   */
  start() {
    let done = plugins.smartpromise.defer();
    if (typeof this.nginxChildProcess == 'undefined') {
      this.nginxChildProcess = plugins.childProcess.exec(
        `nginx -c ${paths.nginxConfFile}`,
        function(error, stdout, stderr) {
          console.log(`stdout: ${stdout}`);
          console.log(`stderr: ${stderr}`);
          if (error !== null) {
            console.log(`exec error: ${error}`);
          }
        }
      );
    }
    this.started = true;
    plugins.smartlog.defaultLogger.info('started Nginx!');
    done.resolve();
    return done.promise;
  }

  /**
   * reload config
   */
  reloadConfig() {
    let done = plugins.smartpromise.defer();
    if (this.started == false) {
      this.start();
    } else {
      this.smartshellInstance.exec('nginx -s reload');
    }
    plugins.smartlog.defaultLogger.info('NginxProcess has loaded the new config!');
    done.resolve();
    return done.promise;
  }

  /**
   * stop the nginx instance
   */
  stop() {
    let done = plugins.smartpromise.defer();
    if (typeof this.nginxChildProcess != 'undefined') {
      this.smartshellInstance.exec('nginx -s quit');
      this.started = false;
      plugins.smartlog.defaultLogger.info('stopped Nginx!');
    } else {
      plugins.smartlog.defaultLogger.info('nginx already stopped!');
    }
    done.resolve();
    return done.promise;
  }

  /**
   * checks if nginx is in path
   */
  check(): boolean {
    return;
  }
}