# Source: vertx-auth-mongo-js/hash_strategy.js

    /*
     * Copyright 2014 Red Hat, Inc.
     *
     * Red Hat licenses this file to you under the Apache License, version 2.0
     * (the "License"); you may not use this file except in compliance with the
     * License.  You may obtain a copy of the License at:
     *
     * http://www.apache.org/licenses/LICENSE-2.0
     *
     * Unless required by applicable law or agreed to in writing, software
     * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
     * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.  See the
     * License for the specific language governing permissions and limitations
     * under the License.
     */

    /** @module vertx-auth-mongo-js/hash_strategy */
    var utils = require('vertx-js/util/utils');
    var User = require('vertx-auth-common-js/user');

    var io = Packages.io;
    var JsonObject = io.vertx.core.json.JsonObject;
    var JHashStrategy = Java.type('io.vertx.ext.auth.mongo.HashStrategy');

    /**
     Determines how the hashing is computed in the implementation You can implement this to provide a different hashing
     strategy to the default.

     @class
    */
    var HashStrategy = function(j_val) {

      var j_hashStrategy = j_val;
      var that = this;

      /**
       Compute the hashed password given the unhashed password and the user

       @public
       @param password {string} the unhashed password
       @param user {User} the user to get the salt for. This paramter is needed, if the  is declared to be used
       @return {string} the hashed password
       */
      this.computeHash = function(password, user) {
        var __args = arguments;
        if (__args.length === 2 && typeof __args[0] === 'string' && typeof __args[1] === 'object' && __args[1]._jdel) {
          return j_hashStrategy["computeHash(java.lang.String,io.vertx.ext.auth.User)"](password, user._jdel);
        } else throw new TypeError('function invoked with invalid arguments');
      };

      /**
       Retrieve the password from the user, or as clear text or as hashed version, depending on the definition

       @public
       @param user {User} the user to get the stored password for
       @return {string} the password, either as hashed version or as cleartext, depending on the preferences
       */
      this.getStoredPwd = function(user) {
        var __args = arguments;
        if (__args.length === 1 && typeof __args[0] === 'object' && __args[0]._jdel) {
          return j_hashStrategy["getStoredPwd(io.vertx.ext.auth.User)"](user._jdel);
        } else throw new TypeError('function invoked with invalid arguments');
      };

      /**
       Retrieve the salt. The source of the salt can be the external salt or the propriate column of the given user,
       depending on the defined <a href="../../enums.html#HashSaltStyle">HashSaltStyle</a>

       @public
       @param user {User} the user to get the salt for. This paramter is needed, if the  is declared to be used
       @return {string} null in case of  the salt of the user or a defined external salt
       */
      this.getSalt = function(user) {
        var __args = arguments;
        if (__args.length === 1 && typeof __args[0] === 'object' && __args[0]._jdel) {
          return j_hashStrategy["getSalt(io.vertx.ext.auth.User)"](user._jdel);
        } else throw new TypeError('function invoked with invalid arguments');
      };

      /**
       Set an external salt. This method should be used in case of

       @public
       @param salt {string} the salt, which shall be used
       */
      this.setExternalSalt = function(salt) {
        var __args = arguments;
        if (__args.length === 1 && typeof __args[0] === 'string') {
          j_hashStrategy["setExternalSalt(java.lang.String)"](salt);
        } else throw new TypeError('function invoked with invalid arguments');
      };

      /**
       Set the saltstyle as defined by <a href="../../enums.html#HashSaltStyle">HashSaltStyle</a>.

       @public
       @param saltStyle {Object} the <a href="../../enums.html#HashSaltStyle">HashSaltStyle</a> to be used
       */
      this.setSaltStyle = function(saltStyle) {
        var __args = arguments;
        if (__args.length === 1 && typeof __args[0] === 'string') {
          j_hashStrategy["setSaltStyle(io.vertx.ext.auth.mongo.HashSaltStyle)"](io.vertx.ext.auth.mongo.HashSaltStyle.valueOf(saltStyle));
        } else throw new TypeError('function invoked with invalid arguments');
      };

      /**
       Get the defined <a href="../../enums.html#HashSaltStyle">HashSaltStyle</a> of the current instance

       @public

       @return {Object} the saltStyle
       */
      this.getSaltStyle = function() {
        var __args = arguments;
        if (__args.length === 0) {
          return utils.convReturnEnum(j_hashStrategy["getSaltStyle()"]());
        } else throw new TypeError('function invoked with invalid arguments');
      };

      /**
       Allows the selection of the hashing algorithm.

       @public
       @param algorithm {Object} the choosen algorithm
       */
      this.setAlgorithm = function(algorithm) {
        var __args = arguments;
        if (__args.length === 1 && typeof __args[0] === 'string') {
          j_hashStrategy["setAlgorithm(io.vertx.ext.auth.mongo.HashAlgorithm)"](io.vertx.ext.auth.mongo.HashAlgorithm.valueOf(algorithm));
        } else throw new TypeError('function invoked with invalid arguments');
      };

      // A reference to the underlying Java delegate
      // NOTE! This is an internal API and must not be used in user code.
      // If you rely on this property your code is likely to break if we change it / remove it without warning.
      this._jdel = j_hashStrategy;
    };

    HashStrategy._jclass = utils.getJavaClass("io.vertx.ext.auth.mongo.HashStrategy");
    HashStrategy._jtype = {
      accept: function(obj) {
        return HashStrategy._jclass.isInstance(obj._jdel);
      },
      wrap: function(jdel) {
        var obj = Object.create(HashStrategy.prototype, {});
        HashStrategy.apply(obj, arguments);
        return obj;
      },
      unwrap: function(obj) {
        return obj._jdel;
      }
    };
    HashStrategy._create = function(jdel) {
      var obj = Object.create(HashStrategy.prototype, {});
      HashStrategy.apply(obj, arguments);
      return obj;
    }
    module.exports = HashStrategy;