// modifyVerb.js

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

  var p = adventurejs.Dictionary.prototype;

  /**
   * <strong>modifyVerb</strong> enables an author to revise the properties
   * of an existing verb. For example, let's say you want to revise the
   * verb "plug" so that it works in the dark - meaning that players
   * it can operate on assets the player can't see. You might copy the
   * <code>plug.phrase1</code> and in your game file, call modifyVerb with
   * line <code>visible: true</code> removed. Use game.modifyVerb() as a shortcut.
   * <pre class="display"><code class="language-javascript">MyGame.modifyVerb({
   *   name: "plug",
   *   phrase1:{
   *     accepts_noun: true,
   *     requires_noun: true,
   *     accepts_preposition: true,
   *     noun_must_be:
   *     {
   *       known: true,
   *       tangible: true,
   *       present: true,
   *       <span class="strikethrough">visible: true,</span>
   *       reachable: true,
   *     },
   *   },
   * });</code></pre>
   * @memberOf adventurejs.Dictionary
   * @method adventurejs.Dictionary#modifyVerb
   * @param {Object} modifyVerb
   * @returns {object}
   */
  p.modifyVerb = function (modifyVerb) {
    if ("object" !== typeof modifyVerb) {
      var msg =
        "Dictionary.modifyVerb takes an object, but received " +
        typeof modifyVerb +
        ": " +
        modifyVerb;
      this.game.log("L1323", "warn", "critical", msg, "dictionary");
      return false;
    }
    if ("undefined" === typeof modifyVerb.name) {
      var msg =
        "Dictionary.modifyVerb received an object without a name: " +
        JSON.stringify(modifyVerb);
      this.game.log("L1324", "warn", "critical", msg, "dictionary");
      return false;
    }
    if ("undefined" === typeof this.verbs[modifyVerb.name]) {
      var msg =
        "Dictionary.modifyVerb received a verb name that doesn't exist: " +
        modifyVerb.name;
      this.game.log("L1325", "warn", "critical", msg, "Verb");
      return false;
    }
    var verb = this.verbs[modifyVerb.name];

    // add new synonyms, if any, to verb lookup
    // does not allow removal of existing words
    if (modifyVerb.synonyms) {
      this.game.dictionary.verb_lookup[verb.name].synonyms =
        this.game.dictionary.verb_lookup[verb.name].synonyms.concat(
          modifyVerb.synonyms
        );
    }

    verb.set(modifyVerb); // copy incoming props to existing verb

    verb.initialize();

    if (false !== verb) {
      this.game.log(
        "L1326",
        "log",
        "medium",
        "modifyVerb successfully patched verb " + verb.name + ".",
        "dictionary"
      );
    }
    return verb;
  };
})();