export default function (translate = this.translate || 0) {
  const swiper = this;
  const params = swiper.params;

  const { slides, rtlTranslate: rtl } = swiper;

  if (slides.length === 0) return;
  if (typeof slides[0].swiperSlideOffset === 'undefined') swiper.updateSlidesOffset();

  let offsetCenter = -translate;
  if (rtl) offsetCenter = translate;

  // Visible Slides
  slides.removeClass(params.slideVisibleClass);

  for (let i = 0; i < slides.length; i += 1) {
    const slide = slides[i];
    const slideProgress =
      (
        (offsetCenter + (params.centeredSlides ? swiper.minTranslate() : 0)) - slide.swiperSlideOffset
      ) / (slide.swiperSlideSize + params.spaceBetween);
    if (params.watchSlidesVisibility) {
      const slideBefore = -(offsetCenter - slide.swiperSlideOffset);
      const slideAfter = slideBefore + swiper.slidesSizesGrid[i];
      const isVisible =
                (slideBefore >= 0 && slideBefore < swiper.size) ||
                (slideAfter > 0 && slideAfter <= swiper.size) ||
                (slideBefore <= 0 && slideAfter >= swiper.size);
      if (isVisible) {
        slides.eq(i).addClass(params.slideVisibleClass);
      }
    }
    slide.progress = rtl ? -slideProgress : slideProgress;
  }
}
