// tokenizeVerbs.js

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

  var p = AdventureJS.Parser.prototype;

  /**
   * List of methods to be called during parse that perform
   * regex operations on input in order to join phrasal verbs.
   * @var AdventureJS.Parser#phrasal_patterns
   * @type {Array}
   */
  p.phrasal_patterns = [
    "tokenizeTryGerunds",
    "tokenizeTryToVerbs",
    "tokenizeVerbGerunds",
    "tokenizeVerbPrepNounPrepNounPrepNouns",
    "tokenizeVerbNounPrepPrepNouns",
    "tokenizeVerbNounPrepNounPrepNouns",
    "tokenizeVerbPrepNounPrepNouns",
    "tokenizeVerbPrepPrepPrepNouns",
    "tokenizeVerbPrepPrepNouns",
    "tokenizeVerbNounPrepNouns",
    "tokenizeVerbNounPreps",
    "tokenizeVerbPrepNouns",
  ];

  /**
   * <code>tokenizeVerbs</code> identifies phrasal or compound verb
   * patterns such as "swing from tree to cliff on vine". This feature
   * is mostly retired but for use in a small few instances such as
   * aiding in identifying "plug in computer" vs "plug drain". An earlier
   * version of the parser used this extensively to join phrasal verbs
   * into distinct verbs such as "swing_from_to_on tree cliff vine",
   * which worked well but ultimately proved to be inflexible.
   * <br><br>
   * The listed order of regex operations is important. We're calling them
   * in order of longest to shortest, to ensure we don't accidentally
   * catch partial phrases, like only finding "swing_from" out of
   * "swing from tree to cliff on vine", and then not finding
   * "swing_from_to_on", which is a distinct pattern.
   * @memberOf AdventureJS.Parser
   * @method AdventureJS.Parser#tokenizeVerbs
   * @param {String} input Player input.
   * @returns {String}
   */
  p.tokenizeVerbs = function Parser_tokenizeVerbs(input) {
    this.game.log(
      "L1556",
      "log",
      "high",
      `[tokenizeVerbs.js] tokenizeVerbs() receive: ${input}`,
      "Parser"
    );
    // join phrasal verbs
    if (1 < input.split(" ").length) {
      for (let i = 0; i < this.phrasal_patterns.length; i++) {
        let phrasal_input = this[this.phrasal_patterns[i]](input);

        // this version returns the original input
        // if (phrasal_input !== input) return input;

        // this version returns the modified input
        if (phrasal_input !== input) return phrasal_input;
      }
    }

    this.game.log(
      "L1557",
      "log",
      "high",
      `[tokenizeVerbs.js] tokenizeVerbs() return:\n${input}`,
      "Parser"
    );
    return input;
  };
})();