import Clip from '../../client'
import ClipMediaTrackerAdapter from '../../client/trackingAdapter'

describe('ClipMediaTrackerAdapter', () => {
  let videoElement: HTMLVideoElement
  let clip: Clip
  let adapter: ClipMediaTrackerAdapter

  const createClipStub = (overrides: Partial<Clip> = {}) =>
    ({
      opts: {
        id: 'clip-id',
        layout: 'in-line',
        autoplay: false,
        systemTitle: 'Clip title',
      },
      loops: 2,
      canAutoplay: false,
      autoplayPaused: false,
      started: false,
      ...overrides,
    } as Clip)

  beforeEach(() => {
    videoElement = document.createElement('video')
    Object.defineProperty(videoElement, 'duration', {
      configurable: true,
      value: 42.5,
    })
    Object.defineProperty(videoElement, 'currentTime', {
      configurable: true,
      writable: true,
      value: 12.25,
    })

    clip = createClipStub()
    adapter = new ClipMediaTrackerAdapter(videoElement, clip)
  })

  it('exposes media values used by the SDK', () => {
    expect(adapter.player).toBe(videoElement)
    expect(adapter.getCurrentTime()).toBe(12.25)
    expect(adapter.getDuration()).toBe(42.5)
    expect(adapter.getMediaId()).toBe('clip-id')
    expect(adapter.getSourceUrl()).toBe('clip-id')
    expect(adapter.getVideoType()).toBe('clip')
    expect(adapter.getVideoLayout()).toBe('in-line')
    expect(adapter.getLoopCount()).toBe(2)
    expect(adapter.isAutoplay()).toBe(false)
  })

  it('returns zero duration when media duration is not available', () => {
    Object.defineProperty(videoElement, 'duration', {
      configurable: true,
      value: NaN,
    })

    expect(adapter.getDuration()).toBe(0)
  })

  it('adds and removes event listeners on the media element', () => {
    const callback = jest.fn()

    adapter.on('playing', callback)
    videoElement.dispatchEvent(new Event('playing'))

    expect(callback).toHaveBeenCalledTimes(1)

    adapter.off('playing', callback)
    videoElement.dispatchEvent(new Event('playing'))

    expect(callback).toHaveBeenCalledTimes(1)
  })
})