// joinVerbPrepNouns.js

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

	var p = adventurejs.Parser.prototype;

  /**
   * <p>
   * Search input for compound verb phrases in the format of
   * "verb prep noun",
   * by comparing the input string against entries in 
   * dictionary.verb_prep_nouns, 
   * which was populated by Verb definitions.
   * If we find a set of words that match an entry, 
   * we compress the words into a single string
   * that is a Verb name.
   * </p> 
   * <p>
   * For example:<br>
   * <code class="property">"look in desk"</code>
   * becomes 
   * <code class="property">"lookIn desk"</code>
   * </p>
   * @memberOf adventurejs.Parser
   * @method adventurejs.Parser#joinVerbPrepNouns
   * @param {String} input Player input.
   * @returns {String}
   */
   p.joinVerbPrepNouns = function Parser_joinVerbPrepNouns( input ) 
  {
		for( var i=0; i < this.dictionary.verb_prep_nouns.length; i++ ) 
    {
			var pair = this.dictionary.verb_prep_nouns[i];
      //var replaced = input.replace( pair[0], pair[1] );

      // search anywhere in string
      //var search = "\\b"+pair[0]+"\\b"; 

      // only search beginning of string
      // important for cases like "put plug in sink" so we don't concat "plugIn"
      var search = "^(\\b" + pair[0] + "\\b)";

      var regex = new RegExp(search,"g");
      var replaced = input.replace( regex, pair[1] );

      if( replaced !== input ) 
      {
        console.warn( 'pair[0]', pair[0] );
        console.warn( 'pair[1]', pair[1] );
        // save a record of the original input
        this.input_history[ 0 ].input_verb = pair[0];
        this.input_history[ 0 ].joint = "verb_prep_noun";
        input = replaced;
        break;
      }
		}

    this.game.log( "log", "high", "parseInput.js > joinVerbPrepNouns returns: " + input, 'Parser' );
		return input;
  }  
}());