import Component from '@ember/component';
import { get, computed } from '@ember/object';
import { alias } from '@ember/object/computed';
import { inject as service } from '@ember/service';
import layout from './template';

export default Component.extend({
  intl: service(),
  scope: service(),

  layout,

  nodes: null,
  componentStatuses: alias('scope.currentCluster.componentStatuses'),
  components: null,

  init() {
    this._super(...arguments);
    this.setComponents();
  },

  inactiveNodes: computed('nodes.@each.state', function () {
    return this.get('nodes').filter( n => get(n, 'state') !== 'active');
  }),

  unhealthyComponents: computed('componentStatuses.@each.conditions', function () {
    return (this.get('componentStatuses')||[])
      .filter(s => !s.conditions.any(c => c.status === 'True'));
  }),

  updateComponentsStatus: function () {
    this.setComponents();
  }.observes('componentStatuses.@each.conditions', 'nodes.@each.{state}'),

  setComponents() {
    const etcd = this.getEtcdComponent();
    const controller = this.getControllerComponent();
    const scheduler = this.getSchedulerComponent();
    const node = this.getNodeComponent();
    this.set('components', [etcd, controller, scheduler, node]);
  },

  getEtcdComponent() {
    return {
      name: this.get('intl').t('clusterDashboard.etcd'),
      healthy: this.isHealthy('etcd'),
    };
  },

  getControllerComponent() {
    return {
      name: this.get('intl').t('clusterDashboard.controllerManager'),
      healthy: this.isHealthy('controller-manager'),
    };
  },

  getSchedulerComponent() {
    return {
      name: this.get('intl').t('clusterDashboard.scheduler'),
      healthy: this.isHealthy('scheduler'),
    };
  },

  getNodeComponent() {
    return {
      name: this.get('intl').t('clusterDashboard.node'),
      healthy: this.get('nodes').filterBy('state', 'active').length === this.get('nodes').length,
    };
  },

  isHealthy(field) {
    return (this.get('componentStatuses')||[])
      .filter(s => s.name.startsWith(field))
      .any(s => s.conditions.any(c => c.status === 'True'));
  },
});