export default function updateSlidesClasses() {
	const swiper = this;
	const {
		slides,
		params,
		$wrapperEl,
		activeIndex,
		realIndex
	} = swiper;
	if (!slides.length || !$wrapperEl) return;
	const isVirtual = swiper.virtual && params.virtual.enabled;
	for (var i = 0; i < slides.length; i++) {
		slides[i].removeClass(
			`${params.slideActiveClass} ${params.slideNextClass} ${params.slidePrevClass} ${params.slideDuplicateActiveClass} ${params.slideDuplicateNextClass} ${params.slideDuplicatePrevClass}`
		);
	}

	let activeSlide;

	if (isVirtual) {
		// activeSlide = swiper.$wrapperEl.find(`.${params.slideClass}[data-swiper-slide-index="${activeIndex}"]`);
		activeSlide = slides[slides.findIndex((item) => {
			return item.dataSwiperSlideIndex == activeIndex
		})];
	} else {
		activeSlide = slides[activeIndex];
	} // Active classes

	if (!activeSlide) return
	activeSlide.addClass(params.slideActiveClass);

	if (params.loop) {
		if (activeSlide.hasClass(params.slideDuplicateClass)) {
			// $wrapperEl.children[realIndex].addClass(params.slideDuplicateActiveClass);
			let index = slides.findIndex((item) => {
				return !item.hasClass(params.slideDuplicateClass) && item.dataSwiperSlideIndex == realIndex
			})
			slides[index] && slides[index].addClass(params.slideDuplicateActiveClass);
		} else {
			// $wrapperEl.children[realIndex].addClass(params.slideDuplicateActiveClass);
			let index = slides.findIndex((item) => {
				return item.hasClass(params.slideDuplicateClass) && item.dataSwiperSlideIndex == realIndex
			})
			slides[index] && slides[index].addClass(params.slideDuplicateActiveClass);
		}
	} // Next Slide


	let nextSlide = activeSlide.nextAll(`.${params.slideClass}`)[0];
	if (nextSlide) {
		nextSlide.addClass(params.slideNextClass);
	} else {
		if (params.loop && !nextSlide) {
			nextSlide = slides[0];
			nextSlide.addClass(params.slideNextClass);
		} // Prev Slide
	}



	let prevSlide = activeSlide.prevAll(`.${params.slideClass}`)[0];
	if (prevSlide) {
		prevSlide.addClass(params.slidePrevClass);
	} else {
		if (params.loop && !prevSlide) {
			prevSlide = slides[slides.length - 1];
			prevSlide.addClass(params.slidePrevClass);
		}
	}


	if (params.loop) {
		// Duplicate to all looped slides
		if (nextSlide.hasClass(params.slideDuplicateClass)) {
			// $wrapperEl.children(
			// 	nextSlide.dataSwiperSlideIndex
			// ).addClass(params.slideDuplicateNextClass);

			let index = slides.findIndex((item) => {
				return !item.hasClass(params.slideDuplicateClass) && item.dataSwiperSlideIndex == nextSlide
					.dataSwiperSlideIndex
			})
			slides[index] && slides[index].addClass(params.slideDuplicateNextClass);


		} else {
			// $wrapperEl.children(
			// 	nextSlide.dataSwiperSlideIndex
			// ).addClass(params.slideDuplicateNextClass);

			let index = slides.findIndex((item) => {
				return item.hasClass(params.slideDuplicateClass) && item.dataSwiperSlideIndex == nextSlide
					.dataSwiperSlideIndex
			})
			slides[index] && slides[index].addClass(params.slideDuplicateNextClass);
		}
		if (prevSlide.hasClass(params.slideDuplicateClass)) {
			// $wrapperEl.children(
			// 	prevSlide.dataSwiperSlideIndex
			// ).addClass(params.slideDuplicatePrevClass);
			let index = slides.findIndex((item) => {
				return !item.hasClass(params.slideDuplicateClass) && item.dataSwiperSlideIndex == prevSlide
					.dataSwiperSlideIndex
			})
			slides[index] && slides[index].addClass(params.slideDuplicatePrevClass);
		} else {
			// $wrapperEl.children(
			// 	prevSlide.dataSwiperSlideIndex
			// ).addClass(params.slideDuplicatePrevClass);
			let index = slides.findIndex((item) => {
				return item.hasClass(params.slideDuplicateClass) && item.dataSwiperSlideIndex == prevSlide
					.dataSwiperSlideIndex
			})
			slides[index] && slides[index].addClass(params.slideDuplicatePrevClass);
		}
	}

	swiper.emitSlidesClasses();
}