/**
 * 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');

/**
 * 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,

  isSubmitDisabled: function () {
    return !this.stepConfigs.everyProperty('errorCount', 0);
  }.property('stepConfigs.@each.errorCount'),

  selectedServiceNames: function () {
    return this.get('content.services').filterProperty('isSelected', true).filterProperty('isInstalled', false).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'),

  serviceConfigs: require('data/service_configs'),
  configMapping: require('data/config_mapping'),
  customConfigs: require('data/custom_configs'),
  customData: [],

  clearStep: function () {
    this.get('stepConfigs').clear();
  },

  /**
   * On load function
   */
  loadStep: function () {
    console.log("TRACE: Loading step7: Configure Services");
    this.clearStep();
    var serviceConfigs = this.get('serviceConfigs');
    var advancedConfig = this.get('content.advancedServiceConfig') || [];
    this.loadAdvancedConfig(serviceConfigs,advancedConfig);
    this.loadHostConfigs();
    this.loadCustomConfig();
    this.renderServiceConfigs(serviceConfigs);
    var storedServices = this.get('content.serviceConfigProperties');
    if (storedServices) {
      var configs = new Ember.Set();

      // for all services`
      this.get('stepConfigs').forEach(function (_content) {
        //for all components
        _content.get('configs').forEach(function (_config) {

          var componentVal = storedServices.findProperty('name', _config.get('name'));
          //if we have config for specified component
          if (componentVal) {
            //set it
            _config.set('value', componentVal.value)
          }

        }, this);
      }, this);

    }
  },

  /*
  Loads the advanced configs fetched from the server metadata libarary
   */

  loadAdvancedConfig: function (serviceConfigs,advancedConfig) {
    advancedConfig.forEach(function (_config) {
      if (_config) {
        var service = serviceConfigs.findProperty('serviceName', _config.serviceName);
        if (service) {
          if (this.get('configMapping').someProperty('name', _config.name)) {
          } else if (!(service.configs.someProperty('name', _config.name))) {
            _config.id = "site property";
            _config.category = 'Advanced';
            _config.displayName = _config.name;
            _config.defaultValue = _config.value;
            // make all advanced configs optional and populated by default
            /*
            if (/\${.*}/.test(_config.value) || (service.serviceName !== 'OOZIE' && service.serviceName !== 'HBASE')) {
              _config.isRequired = false;
              _config.value = '';
            } else if (/^\s+$/.test(_config.value)) {
              _config.isRequired = false;
            }
            */
            _config.isRequired = false;
            _config.isVisible = true;
            _config.displayType = 'advanced';
            service.configs.pushObject(_config);
          }
        }
      }
    }, this);
  },

  /*
  loads host related configs obtained from server.
   */
  loadHostConfigs: function() {

  },


  /**
   * Render a custom conf-site box for entering properties that will be written in *-site.xml files of the services
   */
  loadCustomConfig: function () {
    var serviceConfigs = this.get('serviceConfigs');
    this.get('customConfigs').forEach(function (_config) {
      var service = serviceConfigs.findProperty('serviceName', _config.serviceName);
      if (service) {
        if (!(service.configs.someProperty('name', _config.name))) {
          service.configs.pushObject(_config);
        }
      }
    }, this);
  },

  /**
   * Render configs for active services
   * @param serviceConfigs
   */
  renderServiceConfigs: function (serviceConfigs) {
    serviceConfigs.forEach(function (_serviceConfig) {

      var serviceConfig = App.ServiceConfig.create({
        filename: _serviceConfig.filename,
        serviceName: _serviceConfig.serviceName,
        displayName: _serviceConfig.displayName,
        configCategories: _serviceConfig.configCategories,
        configs: []
      });

      if (this.get('selectedServiceNames').contains(serviceConfig.serviceName) || serviceConfig.serviceName === 'MISC') {
        this.loadComponentConfigs(_serviceConfig, serviceConfig);

        console.log('pushing ' + serviceConfig.serviceName);
        this.get('stepConfigs').pushObject(serviceConfig);

      } else {
        console.log('skipping ' + serviceConfig.serviceName);
      }
    }, this);

    var miscConfigs = this.get('stepConfigs').findProperty('serviceName', 'MISC').configs;
    var showProxyGroup = this.get('selectedServiceNames').contains('HIVE') ||
      this.get('selectedServiceNames').contains('HCATALOG') ||
      this.get('selectedServiceNames').contains('OOZIE');
    miscConfigs.findProperty('name', 'proxyuser_group').set('isVisible', showProxyGroup);
    miscConfigs.findProperty('name', 'hbase_user').set('isVisible', this.get('selectedServiceNames').contains('HBASE'));
    miscConfigs.findProperty('name', 'mapred_user').set('isVisible', this.get('selectedServiceNames').contains('MAPREDUCE'));
    miscConfigs.findProperty('name', 'hive_user').set('isVisible', this.get('selectedServiceNames').contains('HIVE'));
    miscConfigs.findProperty('name', 'hcat_user').set('isVisible', this.get('selectedServiceNames').contains('HCATALOG'));
    miscConfigs.findProperty('name', 'templeton_user').set('isVisible', this.get('selectedServiceNames').contains('HCATALOG'));
    miscConfigs.findProperty('name', 'oozie_user').set('isVisible', this.get('selectedServiceNames').contains('OOZIE'));
    miscConfigs.findProperty('name', 'pig_user').set('isVisible', this.get('selectedServiceNames').contains('PIG'));
    miscConfigs.findProperty('name', 'sqoop_user').set('isVisible', this.get('selectedServiceNames').contains('SQOOP'));
    miscConfigs.findProperty('name', 'zk_user').set('isVisible', this.get('selectedServiceNames').contains('ZOOKEEPER'));

    this.set('selectedService', this.get('stepConfigs').objectAt(0));
  },

  /**
   * Load child components to service config object
   * @param _componentConfig
   * @param componentConfig
   */
  loadComponentConfigs: function (_componentConfig, componentConfig) {
    _componentConfig.configs.forEach(function (_serviceConfigProperty) {
      var serviceConfigProperty = App.ServiceConfigProperty.create(_serviceConfigProperty);
      serviceConfigProperty.serviceConfig = componentConfig;
      serviceConfigProperty.initialValue();
      componentConfig.configs.pushObject(serviceConfigProperty);
      serviceConfigProperty.validate();
    }, this);
  },


  submit: function () {
    if (!this.get('isSubmitDisabled')) {
      App.router.send('next');
    }
  }

});