'use strict';

var currentTransport = require('../transports/current-transport');
var ConfigurationChangeMessage = require('./ConfigurationChangeMessage');
var DataModificationMessage = require('./DataModificationMessage');
var DataAccessMessage = require('./DataAccessMessage');
var SecurityMessage = require('./SecurityEventMessage');
var format = require('util').format;
var utils = require('../utils');


module.exports = function auditlog(credentials, serviceOptions, securityContext) {

  var transport = currentTransport(credentials, serviceOptions, securityContext);

  return {
    configurationChange: function (accessedObject) {
      utils.validate.objectWithTypeAndId(accessedObject, 'accessed-object');
      return new ConfigurationChangeMessage({ object: accessedObject }, transport);
    },

    read: function (accessedObject) {
      utils.validate.objectWithTypeAndId(accessedObject, 'accessed-object');
      return new DataAccessMessage({ object: accessedObject }, transport);
    },

    update: function (accessedObject) {
      utils.validate.objectWithTypeAndId(accessedObject, 'accessed-object');
      return new DataModificationMessage({ object: accessedObject }, transport);
    },

    securityMessage: function () {
      utils.validate.provided(arguments[0], 'An argument');
      return new SecurityMessage({ data: format.apply(null, arguments) }, transport);
    }
  };
};