goog.module('grrUi.sidebar.navigatorDirective');
goog.module.declareLegacyNamespace();

const {ApiService, stripTypeInfo} = goog.require('grrUi.core.apiService');
const {RoutingService} = goog.require('grrUi.routing.routingService');


/**
 * Controller for NavigatorDirective.
 * @unrestricted
 */
const NavigatorController = class {
  /**
   * @param {!angular.Scope} $scope
   * @param {!ApiService} grrApiService
   * @param {!RoutingService} grrRoutingService
   * @ngInject
   */
  constructor($scope, grrApiService, grrRoutingService) {
    /** @private {!angular.Scope} */
    this.scope_ = $scope;

    /** @private {!ApiService} */
    this.grrApiService_ = grrApiService;

    /** @private {!RoutingService} */
    this.grrRoutingService_ = grrRoutingService;

    /** @type {Object} */
    this.client;

    /** @type {?string} */
    this.clientId;

    /** @type {boolean} */
    this.hasClientAccess = false;

    /** @type {Object} */
    this.uiTraits;

    // Fetch UI traits.
    this.grrApiService_.getCached('users/me').then(function(response) {
      this.uiTraits = stripTypeInfo(response['data'])['interface_traits'];
    }.bind(this));

    // Subscribe to legacy grr events to be notified on client change.
    this.grrRoutingService_.uiOnParamsChanged(
        this.scope_, 'clientId', this.onClientSelectionChange_.bind(this),
        true);
  }

  /**
   * Handles selection of a client.
   *
   * @param {string} clientId The id of the selected client.
   * @private
   */
  onClientSelectionChange_(clientId) {
    if (!clientId) {
      return;  // Still display the last client for convenience.
    }
    if (clientId.indexOf('aff4:/') === 0) {
      clientId = clientId.split('/')[1];
    }
    if (this.clientId === clientId) {
      return;
    }

    this.clientId = clientId;
    this.client = null;  // Set to null so the loader is shown.

    this.refreshClientDetails();
    this.checkClientAccess_();
  }

  /**
   * Fetches new client details.
   */
  refreshClientDetails() {
    var url = 'clients/' + this.clientId;
    this.grrApiService_.get(url).then(this.onClientDetailsFetched_.bind(this));
  }

  /**
   * Called when the client details were fetched.
   *
   * @param {Object} response
   * @private
   */
  onClientDetailsFetched_(response) {
    this.client = response['data'];
  }

  /**
   * Checks client access.
   *
   * @private
   */
  checkClientAccess_() {
    this.grrApiService_.head('clients/' + this.clientId + '/flows')
        .then(
            function resolve() {
              this.hasClientAccess = true;
            }.bind(this),
            function reject() {
              this.hasClientAccess = false;
            }.bind(this));
  }
};



/**
 * Directive for the navigator.
 *
 * @return {!angular.Directive} Directive definition object.
 * @ngInject
 * @export
 */
exports.NavigatorDirective = function() {
  return {
    scope: {},
    restrict: 'E',
    templateUrl: '/static/angular-components/sidebar/navigator.html',
    controller: NavigatorController,
    controllerAs: 'controller'
  };
};

/**
 * Directive's name in Angular.
 *
 * @const
 * @export
 */
exports.NavigatorDirective.directive_name = 'grrNavigator';
