// splitByThens.js

(function () {
  /*global adventurejs A*/

  var p = adventurejs.Parser.prototype;

  /**
   * Each clause separated by 'then' is a distinct input.
   * We treat clauses as unrelated without depencencies
   * and stack each into a queue.
   * <br><br>
   * Example: "take sword then go north"
   * @memberOf adventurejs.Parser
   * @method adventurejs.Parser#splitByThens
   * @param {String} input
   * @returns {String}
   */
  p.splitByThens = function Parser_splitByThens(input) {
    input = input.split(" then ");
    /**
     * We also do a comma test here because English
     * speakers may be inclined to use a comma
     * before "then", as in:
     *
     *  take sword, then go north
     *
     * We want to strip that comma if we find it, but note that
     * in parseInput.js, commas are being substitued
     * as a shorthand for " and ", so we have two different
     * comma searches in an effort to catch either case.
     */
    for (var i = 0; i < input.length; i++) {
      input[i].trim();
      if ("," === input[i].charAt(input[i].length - 1)) {
        input[i] = input[i].slice(0, -1);
      }
    }
    return input;
  };
})();