/**
 * 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.AddServiceController = Em.Controller.extend({

  name: 'addServiceController',

  /**
   * All wizards data will be stored in this variable
   *
   * cluster - cluster name
   * hosts - hosts, ssh key, repo info, etc.
   * services - services list
   * hostsInfo - list of selected hosts
   * slaveComponentHosts, - info about slave hosts
   * masterComponentHosts - info about master hosts
   * config??? - to be described later
   */
  content: Em.Object.create({
    cluster: null,
    hosts: null,
    services: null,
    hostsInfo: null,
    slaveComponentHosts: null,
    masterComponentHosts: null,
    serviceConfigProperties: null,
    advancedServiceConfig: null,
    controllerName: 'addServiceController',
    isWizard: true
  }),

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

  isStepDisabled: [],

  totalSteps: 9,

  init: function () {
    this.isStepDisabled.pushObject(Ember.Object.create({
      step: 1,
      value: false
    }));
    for (var i = 2; i <= this.totalSteps; i++) {
      this.isStepDisabled.pushObject(Ember.Object.create({
        step: i,
        value: true
      }));
    }
  },

  setStepsEnable: function () {
    for (var i = 2; i <= this.totalSteps; i++) {
      var step = this.get('isStepDisabled').findProperty('step', i);
      if (i <= this.get('currentStep')) {
        step.set('value', false);
      } else {
        step.set('value', true);
      }
    }
  }.observes('currentStep'),

  /**
   * Return current step of Add Host Wizard
   */
  currentStep: function () {
    return App.get('router').getWizardCurrentStep('addService');
  }.property(),

  clusters: null,

  /**
   * Set current step to new value.
   * Method moved from App.router.setInstallerCurrentStep
   * @param currentStep
   * @param completed
   */
  setCurrentStep: function (currentStep, completed) {
    App.db.setWizardCurrentStep('addService', currentStep, completed);
    this.set('currentStep', currentStep);
  },

  isStep1: function () {
    return this.get('currentStep') == 1;
  }.property('currentStep'),

  isStep2: function () {
    return this.get('currentStep') == 2;
  }.property('currentStep'),

  isStep3: function () {
    return this.get('currentStep') == 3;
  }.property('currentStep'),

  isStep4: function () {
    return this.get('currentStep') == 4;
  }.property('currentStep'),

  isStep5: function () {
    return this.get('currentStep') == 5;
  }.property('currentStep'),

  isStep6: function () {
    return this.get('currentStep') == 6;
  }.property('currentStep'),

  isStep7: function () {
    return this.get('currentStep') == 7;
  }.property('currentStep'),

  gotoStep: function (step) {
    if (this.get('isStepDisabled').findProperty('step', step).get('value') === false) {
      App.router.send('gotoStep' + step);
    }
  },

  gotoStep1: function () {
    this.gotoStep(1);
  },

  gotoStep2: function () {
    this.gotoStep(2);
  },

  gotoStep3: function () {
    this.gotoStep(3);
  },

  gotoStep4: function () {
    this.gotoStep(4);
  },

  gotoStep5: function () {
    this.gotoStep(5);
  },

  gotoStep6: function () {
    this.gotoStep(6);
  },

  gotoStep7: function () {
    this.gotoStep(7);
  },


  /**
   * Load clusterInfo(step1) to model
   */
  loadClusterInfo: function(){
    var cluster = App.db.getClusterStatus();
    if(!cluster){
      cluster = {
        name: App.router.getClusterName(),
        status: "",
        isCompleted: false
      };
      App.db.setClusterStatus(cluster);
    }
    this.set('content.cluster', cluster);
    console.log("AddServiceController:loadClusterInfo: loaded data ", cluster);
  },

  /**
   * save status of the cluster. This is called from step8 and step9 to persist install and start requestId
   * @param clusterStatus object with status, isCompleted, requestId, isInstallError and isStartError field.
   */
  saveClusterStatus: function (clusterStatus) {
    clusterStatus.name = this.get('content.cluster.name');
    this.set('content.cluster', clusterStatus);
    console.log('called saveClusterStatus ' + JSON.stringify(clusterStatus));
    App.db.setClusterStatus(clusterStatus);
  },

  /**
   * Temporary function for wizardStep9, before back-end integration
   */
  setInfoForStep9: function () {
    var hostInfo = App.db.getHosts();
    for (var index in hostInfo) {
      hostInfo[index].status = "pending";
      hostInfo[index].message = 'Information';
      hostInfo[index].progress = '0';
    }
    App.db.setHosts(hostInfo);
  },

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

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

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

  /**
   * Save data after installation to main controller
   * @param stepController App.WizardStep9Controller
   */
  saveInstalledHosts: function (stepController) {
    var hosts = stepController.get('hosts');
    var hostInfo = App.db.getHosts();

    for (var index in hostInfo) {
      hostInfo[index].status = "pending";
      var host = hosts.findProperty('name', hostInfo[index].name);
      if (host) {
        hostInfo[index].status = host.status;
        hostInfo[index].message = host.message;
        hostInfo[index].progress = host.progress;
      }
    }
    App.db.setHosts(hostInfo);
    this.set('content.hostsInfo', hostInfo);
    console.log('AddServiceController:saveInstalledHosts: save hosts ', hostInfo);
  },

  /**
   * Remove all data for hosts
   */
  clearHosts: function () {
    var hosts = this.get('content').get('hosts');
    if (hosts) {
      hosts.hostNames = '';
      hosts.manualInstall = false;
      hosts.localRepo = '';
      hosts.localRepopath = '';
      hosts.sshKey = '';
      hosts.passphrase = '';
      hosts.confirmPassphrase = '';
    }
    App.db.setHosts(null);
    App.db.setAllHostNames(null);
  },

  /**
   * Load services data. Will be used at <code>Select services(step4)</code> step
   */
  loadServices: function () {
    var servicesInfo = App.db.getService();
    if(!servicesInfo || !servicesInfo.length){
      servicesInfo = require('data/mock/services').slice(0);
      servicesInfo.forEach(function(item, index){
        servicesInfo[index].isSelected = App.Service.find().someProperty('id', item.serviceName);
        servicesInfo[index].isDisabled = servicesInfo[index].isSelected;
        servicesInfo[index].isInstalled = servicesInfo[index].isSelected;
      });
    }

    servicesInfo.forEach(function (item, index) {
      servicesInfo[index] = Em.Object.create(item);
    });
    this.set('content.services', servicesInfo);
    console.log('AddServiceController.loadServices: loaded data ', servicesInfo);

    var serviceNames = servicesInfo.filterProperty('isSelected', true).filterProperty('isDisabled', false).mapProperty('serviceName');
    console.log('selected services ', serviceNames);

    this.set('content.missSlavesStep', !serviceNames.contains('MAPREDUCE') && !serviceNames.contains('HBASE'));
  },

  /**
   * Save data to model
   * @param stepController App.WizardStep4Controller
   */
  saveServices: function (stepController) {
    var serviceNames = [];
    App.db.setService(stepController.get('content'));
    console.log('AddServiceController.saveServices: saved data', stepController.get('content'));
    stepController.filterProperty('isSelected', true).filterProperty('isInstalled', false).forEach(function (item) {
      serviceNames.push(item.serviceName);
    });
    this.set('content.selectedServiceNames', serviceNames);
    App.db.setSelectedServiceNames(serviceNames);
    console.log('AddServiceController.selectedServiceNames:', serviceNames);

    this.set('content.missSlavesStep', !serviceNames.contains('MAPREDUCE') && !serviceNames.contains('HBASE'));
  },

  /**
   * Save Master Component Hosts data to Main Controller
   * @param stepController App.WizardStep5Controller
   */
  saveMasterComponentHosts: function (stepController) {
    var obj = stepController.get('selectedServicesMasters');
    var masterComponentHosts = [];
    var installedComponents = App.Component.find();

    obj.forEach(function (_component) {
        masterComponentHosts.push({
          display_name: _component.display_name,
          component: _component.component_name,
          hostName: _component.selectedHost,
          serviceId: _component.serviceId,
          isInstalled: installedComponents.someProperty('componentName', _component.component_name)
        });
    });

    console.log("AddServiceController.saveMasterComponentHosts: saved hosts ", masterComponentHosts);
    App.db.setMasterComponentHosts(masterComponentHosts);
    this.set('content.masterComponentHosts', masterComponentHosts);

    this.set('content.missMasterStep', this.get('content.masterComponentHosts').everyProperty('isInstalled', true));
  },

  /**
   * Load master component hosts data for using in required step controllers
   */
  loadMasterComponentHosts: function () {
    var masterComponentHosts = App.db.getMasterComponentHosts();
    if(!masterComponentHosts){
      masterComponentHosts = [];
      App.Component.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("AddServiceController.loadMasterComponentHosts: loaded hosts ", masterComponentHosts);

    this.set('content.missMasterStep', this.get('content.masterComponentHosts').everyProperty('isInstalled', true));
  },

  /**
   * Save slaveHostComponents to main controller
   * @param stepController
   */
  saveSlaveComponentHosts: function (stepController) {

    var hosts = stepController.get('hosts');
    var isMrSelected = stepController.get('isMrSelected');
    var isHbSelected = stepController.get('isHbSelected');

    var dataNodeHosts = [];
    var taskTrackerHosts = [];
    var regionServerHosts = [];
    var clientHosts = [];

    hosts.forEach(function (host) {

      if (host.get('isDataNode')) {
        dataNodeHosts.push({
          hostName: host.hostName,
          group: 'Default',
          isInstalled: host.get('isDataNodeInstalled')
        });
      }
      if (isMrSelected && host.get('isTaskTracker')) {
        taskTrackerHosts.push({
          hostName: host.hostName,
          group: 'Default',
          isInstalled: host.get('isTaskTrackerInstalled')
        });
      }
      if (isHbSelected && host.get('isRegionServer')) {
        regionServerHosts.push({
          hostName: host.hostName,
          group: 'Default',
          isInstalled: host.get('isRegionServerInstalled')
        });
      }
      if (host.get('isClient')) {
        clientHosts.pushObject({
          hostName: host.hostName,
          group: 'Default',
          isInstalled: host.get('isClientInstalled')
        });
      }
    }, this);

    var slaveComponentHosts = [];
    slaveComponentHosts.push({
      componentName: 'DATANODE',
      displayName: 'DataNode',
      hosts: dataNodeHosts
    });
    if (isMrSelected) {
      slaveComponentHosts.push({
        componentName: 'TASKTRACKER',
        displayName: 'TaskTracker',
        hosts: taskTrackerHosts
      });
    }
    if (isHbSelected) {
      slaveComponentHosts.push({
        componentName: 'HBASE_REGIONSERVER',
        displayName: 'RegionServer',
        hosts: regionServerHosts
      });
    }
    slaveComponentHosts.pushObject({
      componentName: 'CLIENT',
      displayName: 'client',
      hosts: clientHosts
    });

    App.db.setSlaveComponentHosts(slaveComponentHosts);
    console.log('addServiceController.slaveComponentHosts: saved hosts', slaveComponentHosts);
    this.set('content.slaveComponentHosts', slaveComponentHosts);
  },
  /**
   * return slaveComponents bound to hosts
   * @return {Array}
   */
  getSlaveComponentHosts: function () {
    var components = [{
      name : 'DATANODE',
      service : 'HDFS'
    },
    {
      name: 'TASKTRACKER',
      service: 'MAPREDUCE'
    },{
      name: 'HBASE_REGIONSERVER',
      service: 'HBASE'
    }];

    var result = [];
    var services = App.Service.find();
    var selectedServices = this.get('content.services').filterProperty('isSelected', true).mapProperty('serviceName');
    for(var index=0; index < components.length; index++){
      var comp = components[index];
      if(!selectedServices.contains(comp.service)){
        continue;
      }


      var service = services.findProperty('id', comp.service);
      var hosts = [];

      if(!service){
        service = services.findProperty('id', 'HDFS');
        service.get('hostComponents').filterProperty('componentName', 'DATANODE').forEach(function (host_component) {
          hosts.push({
            group: "Default",
            hostName: host_component.get('host.id'),
            isInstalled: false
          });
        }, this);
      } else {
        service.get('hostComponents').filterProperty('componentName', comp.name).forEach(function (host_component) {
          hosts.push({
            group: "Default",
            hostName: host_component.get('host.id'),
            isInstalled: true
          });
        }, this);
      }

      result.push({
        componentName: comp.name,
        displayName: App.format.role(comp.name),
        hosts: hosts
      })
    }

    var clientsHosts = App.HostComponent.find().filterProperty('componentName', 'HDFS_CLIENT');
    var hosts = [];

    clientsHosts.forEach(function (host_component) {
        hosts.push({
          group: "Default",
          hostName: host_component.get('host.id'),
          isInstalled: true
        });
    }, this);

    result.push({
      componentName: 'CLIENT',
      displayName: 'client',
      hosts: hosts
    })

    return result;
  },
  /**
   * Load master component hosts data for using in required step controllers
   */
  loadSlaveComponentHosts: function () {
    var slaveComponentHosts = App.db.getSlaveComponentHosts();
    if(!slaveComponentHosts){
      slaveComponentHosts = this.getSlaveComponentHosts();
    }
    this.set("content.slaveComponentHosts", slaveComponentHosts);
    console.log("AddServiceController.loadSlaveComponentHosts: loaded hosts ", slaveComponentHosts);
  },

  /**
   * Save config properties
   * @param stepController Step7WizardController
   */
  saveServiceConfigProperties: function (stepController) {
    var serviceConfigProperties = [];
    stepController.get('stepConfigs').forEach(function (_content) {
      _content.get('configs').forEach(function (_configProperties) {
        var configProperty = {
          name: _configProperties.get('name'),
          value: _configProperties.get('value'),
          service: _configProperties.get('serviceName')
        };
        serviceConfigProperties.push(configProperty);
      }, this);

    }, this);

    App.db.setServiceConfigProperties(serviceConfigProperties);
    this.set('content.serviceConfigProperties', serviceConfigProperties);
  },

  /**
   * Load serviceConfigProperties to model
   */
  loadServiceConfigProperties: function () {
    var serviceConfigProperties = App.db.getServiceConfigProperties();
    this.set('content.serviceConfigProperties', serviceConfigProperties);
    console.log("AddServiceController.loadServiceConfigProperties: loaded config ", serviceConfigProperties);
  },

  /**
   * Load information about hosts with clients components
   */
  loadClients: function(){
    var clients = App.db.getClientsForSelectedServices();
    this.set('content.clients', clients);
    console.log("AddServiceController.loadClients: loaded list ", clients);
  },
  dataLoading: function(){
    var dfd = $.Deferred();
    this.connectOutlet('loading');
    if (App.router.get('clusterController.isLoaded')){
      dfd.resolve();
    } else{
      var interval = setInterval(function(){
        if (App.router.get('clusterController.isLoaded')){
          dfd.resolve();
          clearInterval(interval);
        }
      },50);
    }
    return dfd.promise();
  },
  /**
   * Generate clients list for selected services and save it to model
   * @param stepController step4WizardController
   */
  saveClients: function(stepController){
    var clients = [];
    var serviceComponents = require('data/service_components');
    var hostComponents = App.HostComponent.find();

    stepController.get('content').filterProperty('isSelected',true).forEach(function (_service) {
      var client = serviceComponents.filterProperty('service_name', _service.serviceName).findProperty('isClient', true);
      if (client) {
        clients.pushObject({
          component_name: client.component_name,
          display_name: client.display_name,
          isInstalled: hostComponents.filterProperty('componentName', client.component_name).length > 0
        });
      }
    }, this);

    App.db.setClientsForSelectedServices(clients);
    this.set('content.clients', clients);
    console.log("AddServiceController.saveClients: saved list ", clients);
  },

  /**
   * Load data for all steps until <code>current step</code>
   */
  loadAllPriorSteps: function () {
    var step = this.get('currentStep');
    switch (step) {
      case '7':
      case '6':
      case '5':
        this.loadClusterInfo();
      case '4':
        this.loadServiceConfigProperties();
      case '3':
        this.loadServices();
        this.loadClients();
        this.loadSlaveComponentHosts();//depends on loadServices
      case '2':
        this.loadMasterComponentHosts();
        this.loadConfirmedHosts();
      case '1':
        this.loadServices();
    }
  },

  loadAdvancedConfigs: function () {
    App.db.getSelectedServiceNames().forEach(function (_serviceName) {
      this.loadAdvancedConfig(_serviceName);
    }, this);
  },
  /**
   * Generate serviceProperties save it to localdata
   * called form stepController step6WizardController
   */

  loadAdvancedConfig: function (serviceName) {
    var self = this;
    var url = (App.testMode) ? '/data/wizard/stack/hdp/version01/' + serviceName + '.json' : App.apiPrefix + '/stacks/HDP/version/1.2.0/services/' + serviceName; // TODO: get this url from the stack selected by the user in Install Options page
    var method = 'GET';
    $.ajax({
      type: method,
      url: url,
      async: false,
      dataType: 'text',
      timeout: App.timeout,
      success: function (data) {
        var jsonData = jQuery.parseJSON(data);
        console.log("TRACE: Step6 submit -> In success function for the loadAdvancedConfig call");
        console.log("TRACE: Step6 submit -> value of the url is: " + url);
        var serviceComponents = jsonData.properties;
        serviceComponents.setEach('serviceName', serviceName);
        var configs;
        if (App.db.getAdvancedServiceConfig()) {
          configs = App.db.getAdvancedServiceConfig();
        } else {
          configs = [];
        }
        configs = configs.concat(serviceComponents);
        self.set('content.advancedServiceConfig', configs);
        App.db.setAdvancedServiceConfig(configs);
        console.log('TRACE: servicename: ' + serviceName);
      },

      error: function (request, ajaxOptions, error) {
        console.log("TRACE: STep6 submit -> In error function for the loadAdvancedConfig call");
        console.log("TRACE: STep6 submit-> value of the url is: " + url);
        console.log("TRACE: STep6 submit-> error code status is: " + request.status);
        console.log('Step6 submit: Error message is: ' + request.responseText);
      },

      statusCode: require('data/statusCodes')
    });
  },

  /**
   * Generate clients list for selected services and save it to model
   * @param stepController step8WizardController or step9WizardController
   */
  installServices: function (isRetry) {
    if(!isRetry && this.get('content.cluster.requestId')){
      return;
    }

    var self = this;
    var clusterName = this.get('content.cluster.name');
    var url = (App.testMode) ? '/data/wizard/deploy/poll_1.json' : App.apiPrefix + '/clusters/' + clusterName + '/services?state=INIT';
    var method = (App.testMode) ? 'GET' : 'PUT';
    var data = '{"ServiceInfo": {"state": "INSTALLED"}}';
    $.ajax({
      type: method,
      url: url,
      data: data,
      async: false,
      dataType: 'text',
      timeout: App.timeout,
      success: function (data) {
        var jsonData = jQuery.parseJSON(data);
        var installSartTime = new Date().getTime();
        console.log("TRACE: STep8 -> In success function for the installService call");
        console.log("TRACE: STep8 -> value of the url is: " + url);
        if (jsonData) {
          var requestId = jsonData.href.match(/.*\/(.*)$/)[1];

          console.log('requestId is: ' + requestId);
          var clusterStatus = {
            status: 'PENDING',
            requestId: requestId,
            isInstallError: false,
            isCompleted: false,
            installStartTime: installSartTime
          };
          self.saveClusterStatus(clusterStatus);
        } else {
          console.log('ERROR: Error occurred in parsing JSON data');
        }
      },

      error: function (request, ajaxOptions, error) {
        console.log("TRACE: STep8 -> In error function for the installService call");
        console.log("TRACE: STep8 -> value of the url is: " + url);
        console.log("TRACE: STep8 -> error code status is: " + request.status);
        console.log('Step8: Error message is: ' + request.responseText);
        var clusterStatus = {
          status: 'PENDING',
          isInstallError: true,
          isCompleted: false
        };
        self.saveClusterStatus(clusterStatus);
      },

      statusCode: require('data/statusCodes')
    });

  },

  /**
   * Remove all loaded data.
   * Created as copy for App.router.clearAllSteps
   */
  clearAllSteps: function () {
    this.clearHosts();
    //todo it)
  },

  /**
   * Clear all temporary data
   */
  finish: function(){
    this.setCurrentStep('1', false);
    App.db.setService(undefined); //not to use this data at AddService page
    App.db.setHosts(undefined);
    App.db.setMasterComponentHosts(undefined);
    App.db.setSlaveComponentHosts(undefined);
    App.db.setClusterStatus(undefined);
    App.db.setAllHostNames(undefined);
  }

});