'use strict';

import {NluGlobalSettingsConf} from "../../../index";
import * as fs from 'fs';
import log from "../../../logging";
import chalk from "chalk";


export default function (opts: any, confPath: string, conf: NluGlobalSettingsConf, key: string, value?: string) {

  if (!key) {
    log.error(chalk.magenta(' => No key passed to "$ nlu config delete k".'));
    process.exit(1);
  }

  delete conf[key];

  const result = JSON.stringify(conf, null, 2);

  fs.writeFile(confPath, result, err => {

    if (err) {
      log.error('Could not write out global config.');
      log.error('Here is the config object:', conf);
      log.error(err);
      process.exit(1);
    }

    fs.readFile(confPath, (err, data) => {

      if (err) {
        return;
      }

      try {
        console.log(JSON.parse(String(data)));
      }
      catch (err) {
        // ignore
      }

      process.exit(0);
    });

  });

}