/*
 * Copyright (c) 2016 Hewlett Packard Enterprise Development L.P.
 *
 * Licensed 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.
 */

import config from './helpers/cloudsConfig'
import Version from '../../src/util/version'
import Glance from '../../src/glance'
import Keystone from '../../src/keystone'
import log from 'loglevel'

log.setLevel('DEBUG')

describe('Glance', () => {
  // Create a keystone instance and extract the glance API endpoint.
  const devstackConfig = config.clouds.devstack
  const keystone = new Keystone(devstackConfig)
  const tokenPromise = keystone.tokenIssue()

  const configPromise = tokenPromise
    .then((token) => keystone.catalogList(token))
    .then((catalog) => catalog.find((entry) => entry.name === 'glance'))
    .then((entry) => entry.endpoints.find((endpoint) => endpoint.interface === 'public'))

  describe('versions()', () => {
    it('should return a list of all versions available on this clouds\' glance', (done) => {
      configPromise
        .then((config) => new Glance(config))
        .then((glance) => glance.versions())
        .then((versions) => {
          // Quick sanity check.
          expect(versions.length > 0).toBeTruthy()
          done()
        })
        .catch((error) => done.fail(error))
    })
  })

  describe('version()', () => {
    /**
     * This test acts as a canary, to inform the SDK developers that the Glance API
     * has changed in a significant way.
     */
    it('should return a supported version.', (done) => {
      configPromise
        .then((config) => new Glance(config))
        .then((glance) => glance.version())
        .then((apiVersion) => {
          expect(apiVersion instanceof Version).not.toBeFalsy()
          done()
        })
        .catch((error) => done.fail(error))
    })
  })

  describe('imageList()', () => {
    /**
     * Assert that we can get a list of images.
     */
    it('should return a supported version.', (done) => {
      configPromise
        .then((config) => new Glance(config))
        .then((glance) => glance.imageList(tokenPromise))
        .then((images) => {
          expect(images.length > 0).toBeTruthy()
          done()
        })
        .catch((error) => done.fail(error))
    })
  })
})