/**
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF 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.
 */


var App = require('app');

App.HighAvailabilityWizardController = App.WizardController.extend({

  name: 'highAvailabilityWizardController',

  totalSteps: 9,

  /**
   * Used for hiding back button in wizard
   */
  hideBackButton: true,

  content: Em.Object.create({
    controllerName: 'highAvailabilityWizardController',
    cluster: null,
    hosts: null,
    services: null,
    slaveComponentHosts: null,
    masterComponentHosts: null,
    serviceName: 'MISC',
    hdfsUser:"hdfs",
    nameServiceId: '',
    failedTask : null
  }),

  /**
   * return new object extended from clusterStatusTemplate
   * @return Object
   */
  getCluster: function(){
    return jQuery.extend({}, this.get('clusterStatusTemplate'), {name: App.router.getClusterName()});
  },

  /**
   * Load services data from server.
   */
  loadServicesFromServer: function() {
    var displayOrderConfig = require('data/services');
    var apiUrl = App.get('stack2VersionURL');
    var apiService = this.loadServiceComponents(displayOrderConfig, apiUrl);
    //
    apiService.forEach(function(item, index){
      apiService[index].isSelected = App.Service.find().someProperty('id', item.serviceName);
      apiService[index].isDisabled = apiService[index].isSelected;
      apiService[index].isInstalled = apiService[index].isSelected;
    });
    this.set('content.services', apiService);
    App.db.setService(apiService);
  },

  /**
   * Load confirmed hosts.
   * Will be used at <code>Assign Masters(step5)</code> step
   */
  loadConfirmedHosts: function(){
    var hosts = App.db.getHosts();
    if(!hosts || !hosts.length){
      var hosts = {};

      App.Host.find().forEach(function(item){
        hosts[item.get('id')] = {
          name: item.get('id'),
          cpu: item.get('cpu'),
          memory: item.get('memory'),
          disk_info: item.get('diskInfo'),
          bootStatus: "REGISTERED",
          isInstalled: true
        };
      });
      App.db.setHosts(hosts);
    }

    this.set('content.hosts', hosts);
    console.log('ReassignMasterController.loadConfirmedHosts: loaded hosts', hosts);
  },

  /**
   * Load master component hosts data for using in required step controllers
   */
  loadMasterComponentHosts: function () {
    var masterComponentHosts = App.db.getMasterComponentHosts();
    if(!masterComponentHosts){
      masterComponentHosts = [];
      App.HostComponent.find().filterProperty('isMaster', true).forEach(function(item){
        masterComponentHosts.push({
          component: item.get('componentName'),
          hostName: item.get('host.hostName'),
          isInstalled: true
        })
      });

    }
    this.set("content.masterComponentHosts", masterComponentHosts);
    console.log("ReassignMasterController.loadMasterComponentHosts: loaded hosts ", masterComponentHosts);
  },

  /**
   * save status of the cluster.
   * @param clusterStatus object with status,requestId fields.
   */
  saveClusterStatus: function (clusterStatus) {
    var oldStatus = this.toObject(this.get('content.cluster'));
    clusterStatus = jQuery.extend(oldStatus, clusterStatus);
    if (clusterStatus.requestId) {
      clusterStatus.requestId.forEach(function (requestId) {
        if (clusterStatus.oldRequestsId.indexOf(requestId) === -1) {
          clusterStatus.oldRequestsId.push(requestId)
        }
      }, this);
    }
    this.set('content.cluster', clusterStatus);
    this.save('cluster');
  },

  /**
   * Save Master Component Hosts data to Main Controller
   * @param stepController App.WizardStep5Controller
   */
  saveMasterComponentHosts: function (stepController) {
    var obj = stepController.get('selectedServicesMasters');
    var masterComponentHosts = [];
    obj.forEach(function (_component) {
      masterComponentHosts.push({
        display_name: _component.get('display_name'),
        component: _component.get('component_name'),
        hostName: _component.get('selectedHost'),
        serviceId: _component.get('serviceId'),
        isCurNameNode: _component.get('isCurNameNode'),
        isAddNameNode: _component.get('isAddNameNode'),
        isInstalled: true
      });
    });
    App.db.setMasterComponentHosts(masterComponentHosts);
    this.set('content.masterComponentHosts', masterComponentHosts);
  },

  saveTasksStatuses: function(statuses){
    App.db.setHighAvailabilityWizardTasksStatuses(statuses);
    this.set('content.tasksStatuses', statuses);
  },

  saveFailedTask: function(task){
    App.db.setHighAvailabilityWizardFailedTask(task);
    this.set('content.failedTask', task);
  },

  saveConfigTag: function(tag){
    App.db.setHighAvailabilityWizardConfigTag(tag);
    this.set('content.'+[tag.name], tag.value);
  },

  saveHdfsClientHosts: function(hostNames){
    App.db.setHighAvailabilityWizardHdfsClientHosts(hostNames);
    this.set('content.hdfsClientHostNames', hostNames);
  },

  loadHdfsClientHosts: function(){
    var hostNames = App.db.getHighAvailabilityWizardHdfsClientHosts();
    if (!(hostNames instanceof Array)) {
      hostNames = [hostNames];
    }
    this.set('content.hdfsClientHostNames', hostNames);
  },

  loadConfigTag: function(tag){
    var tagVal = App.db.getHighAvailabilityWizardConfigTag(tag);
    this.set('content.'+tag, tagVal);
  },

  loadTasksStatuses: function(){
    var statuses = App.db.getHighAvailabilityWizardTasksStatuses();
    this.set('content.tasksStatuses', statuses);
  },

  saveRequestIds: function(requestIds){
    App.db.setHighAvailabilityWizardRequestIds(requestIds);
    this.set('content.requestIds', requestIds);
  },

  loadRequestIds: function(){
    var requestIds = App.db.getHighAvailabilityWizardRequestIds();
    this.set('content.requestIds', requestIds);
  },

  saveNameServiceId: function(nameServiceId){
    App.db.setHighAvailabilityWizardNameServiceId(nameServiceId);
    this.set('content.nameServiceId', nameServiceId);
  },

  loadNameServiceId: function(){
    var nameServiceId = App.db.getHighAvailabilityWizardNameServiceId();
    this.set('content.nameServiceId', nameServiceId);
  },

  /**
   * Load data for all steps until <code>current step</code>
   */
  loadAllPriorSteps: function () {
    var step = this.get('currentStep');
    switch (step) {
      case '9':
      case '8':
      case '7':
      case '6':
      case '5':
        this.loadNameServiceId();
        this.loadTasksStatuses();
        this.loadRequestIds();
      case '4':
      case '3':
      case '2':
        this.loadServicesFromServer();
        this.loadMasterComponentHosts();
        this.loadConfirmedHosts();
      case '1':
        this.load('cluster');
    }
  },

  /**
   * Remove all loaded data.
   * Created as copy for App.router.clearAllSteps
   */
  clearAllSteps: function () {
    this.clearInstallOptions();
    // clear temporary information stored during the install
    this.set('content.cluster', this.getCluster());
  },

  /**
   * Clear all temporary data
   */
  finish: function () {
    this.setCurrentStep('1');
    this.clearAllSteps();
    App.router.get('updateController').updateAll();
  }
});