roundhouse/config/index.js

Database Migration Utility using SQL files and versioning based on source control.

'use strict';

const { existsSync, writeFileSync, readFileSync } = require('fs');
const { log } = require('../utils');

const CONFIG_FILE = './node-template.config';

const writeConfig = (setting, value) => {
  try {
    if (!setting) {
      throw 'Setting is undefined';
    }
    if (!existsSync(CONFIG_FILE)) {
      writeFileSync(CONFIG_FILE, '{}');
    }

    let config = JSON.parse(readFileSync(CONFIG_FILE, { encoding: 'utf8' }));

    config[setting] = value;

    writeFileSync(CONFIG_FILE, JSON.stringify(config));
    return true;
  } catch (error) {
    log.error('Error in writeConfig: ');
    log.error(error);
    return false;
  }
}

const readConfig = (setting, defaultValue) => {
  if (!existsSync(CONFIG_FILE)) {
    log.error('Config file does not exist');
    return;
  }

  const config = JSON.parse(readFileSync(CONFIG_FILE, { encoding: 'utf8' }));

  if (!config[setting] && !defaultValue) {
    log.error('Config setting does not exist');
    return;
  } else if (!config[setting]) {
    writeConfig(setting, defaultValue);
    return defaultValue;
  }

  return config[setting];
}

module.exports = {
  writeConfig,
  readConfig
};