// splitByThens.js

(function() {
  /*global adventurejs A*/ 
  "use strict";

	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;
	}

}());