AgentiaSystems/agentia-semaphore

'use strict';

// require dependencies
var _ = require('lodash');
var utils = require('./utils');

/**
 * Set SemaphoreJS configuration options
 *
 * @method set
 * @param {string} key - name of option to set (or get)
 * @param {string} value - value to which to set @param key
 * @return @param value or null of an error occurred
 */
function set(key, value) {
  // if only key argument exist, the treat as a get()
  if (arguments.length === 1) {
    return this._options[key];
  }

  switch (key) {
    case 'api key': {
      // validate the "api key"
      if (utils.isValidApiKey(value)) {
        // set if valid
        this._options[key] = value;
      } else {
        // return an error if not
        this.lastError = new Error('Invalid API key');
        return null;
      }
      break;
    }

    case 'from': {
      // make sure the "from" value is a string
      if (_.isString(value)) {
        // set if it is
        this._options[key] = value;
      } else {
        // return an error if it's not
        this.lastError = new Error('"from" must be a string');
        return null;
      }
      break;
    }

    // return an error when attempting to set an invalid option
    default: {
      this.lastError = new Error('Invalid option');
      return null;
    }

  }

  // if successful, return the set value
  return value;
}

// export public api function
module.exports = set;