export const DELETE_SLIDE = 'DELETE_SLIDE'

export const deleteSlide = index => ({
  type: DELETE_SLIDE,
  index
})

export const slideReducer = (state, action) => {
  // ... normal stuff
  case DELETE_SLIDE:
    return {
      ...state,
      slides: state.slides.filter(slide => slide.id !== action.index),
      currentSlide: state.currentSlide === 0 ? 0 : state.currentSlide - 1
    }
}