/**
 * 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');
var numberUtils = require('utils/number_utils');
/**
 * By Step 7, we have the following information stored in App.db and set on this
 * controller by the router.
 *
 *   selectedServices: App.db.selectedServices (the services that the user selected in Step 4)
 *   masterComponentHosts: App.db.masterComponentHosts (master-components-to-hosts mapping the user selected in Step 5)
 *   slaveComponentHosts: App.db.slaveComponentHosts (slave-components-to-hosts mapping the user selected in Step 6)
 *
 */

App.WizardStep7Controller = Em.Controller.extend({

  name: 'wizardStep7Controller',

  stepConfigs: [], //contains all field properties that are viewed in this step

  selectedService: null,

  slaveHostToGroup: null,

  secureConfigs: require('data/secure_mapping'),

  miscModalVisible: false, //If miscConfigChange Modal is shown

  gangliaAvailableSpace: null,

  gangliaMoutDir:'/',

  overrideToAdd: null,

  isInstaller: true,

  configGroups: [],
  selectedConfigGroup: null,
  usedConfigGroupNames: function () {
    var names = [];
    var selectedServiceName = this.get('selectedService.serviceName');
    this.get('stepConfigs').forEach(function (service) {
      if (selectedServiceName != service.get('serviceName')) {
      names.pushObjects(service.get('configGroups').mapProperty('name'));}
    }, this);
    return names;
  }.property('selectedService.configGroups.@each.name'),

  isSubmitDisabled: function () {
    return (!this.stepConfigs.filterProperty('showConfig', true).everyProperty('errorCount', 0) || this.get("miscModalVisible"));
  }.property('stepConfigs.@each.errorCount', 'miscModalVisible'),

  selectedServiceNames: function () {
    return this.get('content.services').filterProperty('isSelected', true).filterProperty('isInstalled', false).mapProperty('serviceName');
  }.property('content.services').cacheable(),

  allInstalledServiceNames: function () {
    return this.get('content.services').filterProperty('isSelected', true).mapProperty('serviceName');
  }.property('content.services').cacheable(),

  masterComponentHosts: function () {
    return this.get('content.masterComponentHosts');
  }.property('content.masterComponentHosts'),

  slaveComponentHosts: function () {
    return this.get('content.slaveGroupProperties');
  }.property('content.slaveGroupProperties', 'content.slaveComponentHosts'),

  customData: [],

  clearStep: function () {
    this.get('stepConfigs').clear();
    this.set('filter', '');
    this.get('filterColumns').setEach('selected', false);
  },

  /**
   * On load function
   */
  loadStep: function () {
    console.log("TRACE: Loading step7: Configure Services");
    this.clearStep();
    //STEP 1: Load advanced configs
    var advancedConfigs = this.get('content.advancedServiceConfig');
    //STEP 2: Load on-site configs by service from local DB
    var storedConfigs = this.get('content.serviceConfigProperties');
    //STEP 3: Merge pre-defined configs with loaded on-site configs
    var configs = App.config.mergePreDefinedWithStored(storedConfigs, advancedConfigs);
    //STEP 4: Add advanced configs
    App.config.addAdvancedConfigs(configs, advancedConfigs);
    //STEP 5: Add custom configs
    App.config.addCustomConfigs(configs);
    //put properties from capacity-scheduler.xml into one config with textarea view
    if(this.get('allInstalledServiceNames').contains('YARN') && !App.supports.capacitySchedulerUi){
      configs = App.config.fileConfigsIntoTextarea(configs, 'capacity-scheduler.xml');
    }
    var localDB = {
      hosts: this.get('wizardController').getDBProperty('hosts'),
      masterComponentHosts: this.get('wizardController').getDBProperty('masterComponentHosts'),
      slaveComponentHosts: this.get('wizardController').getDBProperty('slaveComponentHosts')
    };
    //STEP 6: Distribute configs by service and wrap each one in App.ServiceConfigProperty (configs -> serviceConfigs)
    var serviceConfigs = App.config.renderConfigs(configs, storedConfigs, this.get('allInstalledServiceNames'), this.get('selectedServiceNames'), localDB);
    if (this.get('wizardController.name') === 'addServiceController') {
      serviceConfigs.setEach('showConfig', true);
      serviceConfigs.setEach('selected', false);
      this.get('selectedServiceNames').forEach(function(serviceName) {
        serviceConfigs.findProperty('serviceName', serviceName).set('selected', true);
      });
    }

    this.set('stepConfigs', serviceConfigs);
    if (App.supports.hostOverridesInstaller) {
      this.loadConfigGroups(this.get('content.configGroups'));
    }
    this.activateSpecialConfigs();
    this.set('selectedService', this.get('stepConfigs').filterProperty('showConfig', true).objectAt(0));

    if (this.get('content.skipConfigStep')) {
      App.router.send('next');
    }
  },

  selectedServiceObserver: function () {
    if (App.supports.hostOverridesInstaller && this.get('selectedService') && (this.get('selectedService.serviceName') !== 'MISC')) {
      var serviceGroups = this.get('selectedService.configGroups');
      this.set('configGroups', serviceGroups);
      this.set('selectedConfigGroup', serviceGroups.findProperty('isDefault'));
    }
  }.observes('selectedService.configGroups.@each'),
  /**
   * load default groups for each service in case of initial load
   * @param serviceConfigGroups
   */
  loadConfigGroups: function (serviceConfigGroups) {
    var services = this.get('stepConfigs');
    var hosts = this.get('getAllHosts').mapProperty('hostName');
    services.forEach(function (service) {
      if (service.get('serviceName') === 'MISC') return;
      var serviceRawGroups = serviceConfigGroups.filterProperty('service.id', service.serviceName);
      if (!serviceRawGroups.length) {
        service.set('configGroups', [
          App.ConfigGroup.create({
            name: "Default",
            description: "Default cluster level " + service.serviceName + " configuration",
            isDefault: true,
            hosts: hosts,
            service: Em.Object.create({
              id: service.serviceName
            })
          })
        ]);
      } else {
        var defaultGroup = App.ConfigGroup.create(serviceRawGroups.findProperty('isDefault'));
        var serviceGroups = service.get('configGroups');
        serviceRawGroups.filterProperty('isDefault', false).forEach(function (configGroup) {
          var readyGroup = App.ConfigGroup.create(configGroup);
          var wrappedProperties = [];
          readyGroup.get('properties').forEach(function(property){
            wrappedProperties.pushObject(App.ServiceConfigProperty.create(property));
          });
          wrappedProperties.setEach('group', readyGroup);
          readyGroup.set('properties', wrappedProperties);
          readyGroup.set('parentConfigGroup', defaultGroup);
          serviceGroups.pushObject(readyGroup);
        });
        defaultGroup.set('childConfigGroups', serviceGroups);
        serviceGroups.pushObject(defaultGroup);
      }
    });
  },

  selectConfigGroup: function (event) {
    this.set('selectedConfigGroup', event.context);
  },

  /**
   * rebuild list of configs switch of config group:
   * on default - display all configs from default group and configs from non-default groups as disabled
   * on non-default - display all from default group as disabled and configs from selected non-default group
   */
  switchConfigGroupConfigs: function () {
    var serviceConfigs = this.get('selectedService.configs');
    var selectedGroup = this.get('selectedConfigGroup');
    var overrideToAdd = this.get('overrideToAdd');
    var displayedConfigGroups = (selectedGroup.get('isDefault')) ?
        this.get('selectedService.configGroups').filterProperty('isDefault', false) :
        [this.get('selectedConfigGroup')];
    var overrides = [];

    displayedConfigGroups.forEach(function (group) {
      overrides.pushObjects(group.get('properties'));
    });
    serviceConfigs.forEach(function (config) {
      var configOverrides = overrides.filterProperty('name', config.get('name'));
      config.set('isEditable', selectedGroup.get('isDefault'));
      if (overrideToAdd && overrideToAdd.get('name') === config.get('name')) {
        configOverrides.push(this.addOverrideProperty(config));
        this.set('overrideToAdd', null);
      }
      configOverrides.setEach('isEditable', !selectedGroup.get('isDefault'));
      config.set('overrides', configOverrides);
    }, this);
  }.observes('selectedConfigGroup'),
  /**
   * create overriden property and push it into Config group
   * @param serviceConfigProperty
   * @return {*}
   */
  addOverrideProperty: function (serviceConfigProperty) {
    var overrides = serviceConfigProperty.get('overrides') || [];
    var newSCP = App.ServiceConfigProperty.create(serviceConfigProperty);
    var group = this.get('selectedService.configGroups').findProperty('name', this.get('selectedConfigGroup.name'));
    newSCP.set('group', group);
    newSCP.set('value', '');
    newSCP.set('isOriginalSCP', false); // indicated this is overridden value,
    newSCP.set('parentSCP', serviceConfigProperty);
    newSCP.set('isEditable', true);
    group.get('properties').pushObject(newSCP);
    overrides.pushObject(newSCP);
    return newSCP;
  },

  manageConfigurationGroup: function () {
    App.router.get('mainServiceItemController').manageConfigurationGroups(this);
  },
  /**
   * Filter text will be located here
   */
  filter: '',

  /**
   * Dropdown menu items in filter combobox
   */
  filterColumns: function () {
    var result = [];
    for (var i = 1; i < 2; i++) {
      result.push(Ember.Object.create({
        name: this.t('common.combobox.dropdown.' + i),
        selected: false
      }));
    }
    return result;
  }.property(),
   /**
   * make some configs visible depending on active services
   */
  activateSpecialConfigs: function () {
    var miscConfigs = this.get('stepConfigs').findProperty('serviceName', 'MISC').configs;
    miscConfigs = App.config.miscConfigVisibleProperty(miscConfigs, this.get('selectedServiceNames'));
  },

  /**
   * @param: An array of display names
   */
  setDisplayMessage: function (siteProperty, displayNames) {
    var displayMsg = null;
    if (displayNames && displayNames.length) {
      if (displayNames.length === 1) {
        displayMsg = siteProperty + ' ' + Em.I18n.t('as') + ' ' + displayNames[0];
      } else {
        var name = null;
        displayNames.forEach(function (_name, index) {
          if (index === 0) {
            name = _name;
          } else if (index === displayNames.length - 1) {
            name = name + ' ' + Em.I18n.t('and') + ' ' + _name;
          } else {
            name = name + ', ' + _name;
          }
        }, this);
        displayMsg = siteProperty + ' ' + Em.I18n.t('as') + ' ' + name;
      }
    } else {
      displayMsg = siteProperty;
    }
    return displayMsg;
  },

  /**
   * Set display names of the property tfrom he puppet/global names
   * @param displayNames: a field to be set with displayNames
   * @param names: array of property puppet/global names
   * @param configProperties: array of config properties of the respective service to the name param
   */
  setPropertyDisplayNames: function (displayNames, names, configProperties) {
    names.forEach(function (_name, index) {
      if (configProperties.someProperty('name', _name)) {
        displayNames.push(configProperties.findProperty('name', _name).displayName);
      }
    }, this);
  },

  /**
   * Display Error Message with service name, its custom configuration name and displaynames on the page
   * @param customConfig: array with custom configuration, serviceName and displayNames relative to custom configuration
   */
  showCustomConfigErrMsg: function (customConfig) {

    App.ModalPopup.show({
      header: Em.I18n.t('installer.step7.ConfigErrMsg.header'),
      primary: Em.I18n.t('ok'),
      secondary: null,
      onPrimary: function () {
        this.hide();
      },
      bodyClass: Ember.View.extend({
        message: Em.I18n.t('installer.step7.ConfigErrMsg.message'),
        siteProperties: customConfig,
        getDisplayMessage: function () {

        }.property('customConfig.@each.siteProperties.@each.siteProperty'),
        customConfig: customConfig,
        templateName: require('templates/wizard/step7_custom_config_error')
      })
    });
  },

  submit: function () {
    if (!this.get('isSubmitDisabled')) {
      App.router.send('next');
    }
  }, 
  
  /**
   * Provides service component name and display-name information for 
   * the current selected service. 
   */
  getCurrentServiceComponents: function () {
    var selectedServiceName = this.get('selectedService.serviceName');
    var masterComponents = this.get('content.masterComponentHosts');
    var slaveComponents = this.get('content.slaveComponentHosts');
    var scMaps = require('data/service_components');
    
    var validComponents = Ember.A([]);
    var seenComponents = {};
    masterComponents.forEach(function(component){
      var cn = component.component
      var cdn = component.display_name;
      if(component.serviceId===selectedServiceName && !seenComponents[cn]){
        validComponents.pushObject(Ember.Object.create({
          componentName: cn,
          displayName: cdn,
          selected: false
        }));
        seenComponents[cn] = cn;
      }
    });
    slaveComponents.forEach(function(component){
      var cn = component.componentName
      var cdn = component.displayName;
      var componentDef = scMaps.findProperty('component_name', cn);
      if(componentDef!=null && selectedServiceName===componentDef.service_name && !seenComponents[cn]){
        validComponents.pushObject(Ember.Object.create({
          componentName: cn,
          displayName: cdn,
          selected: false
        }));
        seenComponents[cn] = cn;
      }
    });
    return validComponents;
  }.property('content'),
  

  getAllHosts: function () {
    // Load hosts
    var allHosts = Ember.A([]);
    var hostNameToHostMap = {};
    var hosts = this.get('content.hosts');
    for ( var hostName in hosts) {
      var host = hosts[hostName];
      hostNameToHostMap[hostName] = App.Host.createRecord({
        id: host.name,
        hostName: host.name,
        publicHostName: host.name,
        cpu: host.cpu,
        memory: host.memory
      });
      allHosts.pushObject(hostNameToHostMap[hostName]);
    }

    // Load host-components
    var masterComponents = this.get('content.masterComponentHosts');
    var slaveComponents = this.get('content.slaveComponentHosts');
    masterComponents.forEach(function (component) {
      var host = hostNameToHostMap[component.hostName];
      var hc = App.HostComponent.createRecord({
        componentName: component.component,
        host: host
      });
      if (host != null) {
        host.get('hostComponents').pushObject(hc);
      }
    });
    slaveComponents.forEach(function (component) {
      component.hosts.forEach(function (host) {
        var h = hostNameToHostMap[host.hostName];
        var hc = App.HostComponent.createRecord({
          componentName: component.componentName,
          host: h
        });
        if (h != null) {
          h.get('hostComponents').pushObject(hc);
        }
      });
    });
    return allHosts;
  }.property('content')

});