/**
 * The arguments to operations.
 *
 * @author n1474335 [n1474335@gmail.com]
 * @copyright Crown Copyright 2016
 * @license Apache-2.0
 *
 * @class
 * @param {Object} ingredient_config
 */
const Ingredient = function (ingredient_config) {
  this.name = '';
  this.type = '';
  this.value = null;

  if (ingredient_config) {
    this._parse_config(ingredient_config);
  }
};


/**
 * Reads and parses the given config.
 *
 * @private
 * @param {Object} ingredient_config
 */
Ingredient.prototype._parse_config = function (ingredient_config) {
  this.name = ingredient_config.name;
  this.type = ingredient_config.type;
};


/**
 * Returns the value of the Ingredient as it should be displayed in a recipe config.
 *
 * @returns {*}
 */
Ingredient.prototype.get_config = function () {
  return this.value;
};


/**
 * Sets the value of the Ingredient.
 *
 * @param {*} value
 */
Ingredient.prototype.set_value = function (value) {
  this.value = Ingredient.prepare(value, this.type);
};


/**
 * Most values will be strings when they are entered. This function converts them to the correct
 * type.
 *
 * @static
 * @param {*} data
 * @param {string} type - The name of the data type.
*/
Ingredient.prepare = function (data, type) {
  switch (type) {
    case 'binary_string':
    case 'binary_short_string':
    case 'editable_option':
      return Utils.parse_escaped_chars(data);
    case 'byte_array':
      if (typeof data === 'string') {
        data = data.replace(/\s+/g, '');
        return Utils.hex_to_byte_array(data);
      } else {
        return data;
      }
      break;
    case 'number':
      var number = parseFloat(data);
      if (isNaN(number)) {
        const sample = Utils.truncate(data.toString(), 10);
        throw `Invalid ingredient value. Not a number: ${sample}`;
      }
      return number;
    default:
      return data;
  }
};