import Component from '@ember/component';
import layout from './template';
import StorageClassProvisioner from 'shared/mixins/storage-class-provisioner';
import { get, setProperties, computed, observer } from '@ember/object';

export const VOLUME_TYPES = [
  'gp2',
  'io1',
  'st1',
  'sc1',
];

export default Component.extend(StorageClassProvisioner, {
  layout,
  volumeTypes: VOLUME_TYPES,

  volumeType: null,
  zones: null,
  zoneAutomatic: null,
  iopsPerGB: null,
  encrypted: true,
  kmsKeyId: null,
  kmsAutomatic: null,

  didReceiveAttrs() {
    const changes = {};

    changes['volumeType'] = get(this, 'parameters.type')||'gp2';
    changes['iopsPerGB']  = get(this, 'parameters.iopsPerGB')||'';

    const zone = get(this, 'parameters.zone');
    const zones = get(this, 'parameters.zones');
    if ( zones && zones.length ) {
      changes['zoneAutomatic'] = false;
      changes['zones'] = zones;
    } else if ( zone ) {
      changes['zoneAutomatic'] = false;
      changes['zones'] = 'zone';
    } else {
      changes['zoneAutomatic'] = true;
      changes['zones'] = '';
    }

    changes['encrypted'] = get(this, 'parameters.encrypted') === "true";

    const key = get(this, 'parameters.kmsKeyId');
    if ( key ) {
      changes['kmsKeyId'] = key;
      changes['kmsAutomatic'] = false;
    } else {
      changes['kmsAutomatic'] = true;
    }

    setProperties(this, changes);
  },

  sendUpdate: observer('volumeType','zones','zoneAutomatic','iopsPerGB','encrypted','kmsKeyId','kmsAutomatic', function() {
    const type = get(this, 'volumeType');
    const out = {
      type: type,
    };

    const zoneAutomatic = get(this, 'zoneAutomatic');
    if ( !zoneAutomatic ) {
      const zones = (get(this, 'zones')||'').trim();
      if ( zones ) {
        out['zones'] = zones;
      }
    }

    if ( get(this, 'supportsIops') ) {
      out['opsePerGB'] = (get(this,'iopsPerGB')||'')+'';
    }

    const encrypted = get(this, 'encrypted');
    const kmsKeyId = get(this, 'kmsKeyId');
    const kmsAutomatic = get(this, 'kmsAutomatic');
    if ( encrypted ) {
      out['encrypted'] = 'true';
      if ( !kmsAutomatic && kmsKeyId ) {
        out['kmsKeyId'] = kmsKeyId;
      }
    } else {
      out['encrypted'] = 'false';
    }

    this.sendAction('changed', out);
  }),

  supportsIops: computed('volumeType', function() {
    return !!get(this, 'volumeType').match(/^io\d+$/);
  })
});