(function ($, window, document) {
	"use strict";
	var scroll_options = $.extend(
			{
				scroll_item_selector: false,
				scroll_content_selector: false,
				scroll_next_selector: false,
				is_shop: false,
				loader: false,
				isotope: false,
			},
			{
				scroll_item_selector: wpbf_infinte_scroll_object.item_Selector,
				scroll_content_selector: wpbf_infinte_scroll_object.content_Selector,
				scroll_next_selector: wpbf_infinte_scroll_object.next_Selector,
				is_shop: true,
				loader: wpbf_infinte_scroll_object.image_loader,
				isotope: wpbf_infinte_scroll_object.isotope,
			},
		),
		under_loading = false,
		loading_finished = false,
		target_url = $(scroll_options.scroll_next_selector).attr("href");

	$(".pagination").css({
		display: "none",
	});

	if (
		!$(scroll_options.post_scroll_next_selector).length == 0 &&
		!$(scroll_options.scroll_item_selector).length == 0 &&
		!$(scroll_options.scroll_content_selector).length == 0
	) {
		loading_finished = true;
	}

	if ($(scroll_options.scroll_next_selector).length == 0) {
		loading_finished = true;
		return;
	}

	var first_product_unit = $(scroll_options.scroll_content_selector)
			.find(scroll_options.scroll_item_selector)
			.first(),
		columns =
			first_product_unit.nextUntil(
				".wpbf-infinite-first",
				scroll_options.scroll_item_selector,
			).length + 1;

	var call_ajax = function () {
		var last_product_unit = $(scroll_options.scroll_content_selector)
			.find(scroll_options.scroll_item_selector)
			.last();
		if (scroll_options.loader)
			$(scroll_options.scroll_content_selector).append(
				'<div class="wpbf-scroll-loader"><center><img src="' +
					scroll_options.loader +
					'"/></center><br></div>',
			);
		under_loading = true;
		$.ajax({
			url: target_url,
			dataType: "html",
			success: function (response) {
				var obj = $(response),
					product_unit = obj.find(scroll_options.scroll_item_selector),
					next = obj.find(scroll_options.scroll_next_selector);

				if (next.length) {
					target_url = next.attr("href");
				} else {
					loading_finished = true;
				}
				if (
					!last_product_unit.hasClass("wpbf-infinite-last") &&
					scroll_options.is_shop
				) {
					position_product_unit(last_product_unit, columns, product_unit);
				}

				last_product_unit.after(product_unit);

				if (wpbf_infinte_scroll_object.isotope) {
					var $grid = $(".wpbf-post-grid-masonry");
					if (!$grid.length) return;

					$grid.isotope("appended", product_unit);

					product_unit.imagesLoaded().progress(function () {
						$grid.isotope("layout");
					});
				}

				product_unit.css({
					opacity: "0",
				});

				$(".wpbf-scroll-loader").remove();

				product_unit.fadeTo(800, 1, function () {
					under_loading = false;
				});
			},
		});
	};

	var position_product_unit = function (last, columns, product_unit) {
		var off_set =
				columns -
				last.prevUntil(
					".wpbf-infinite-last",
					scroll_options.scroll_item_selector,
				).length,
			loop = 0;

		product_unit.each(function () {
			var y = $(this);
			loop++;
			y.removeClass("wpbf-infinite-first");
			y.removeClass("wpbf-infinite-last");
			if ((loop - off_set) % columns === 0) {
				y.addClass("wpbf-infinite-last");
			} else if ((loop - (off_set - 1)) % columns === 0) {
				y.addClass("wpbf-infinite-last");
			}
		});
	};

	$(window).on("scroll touchstart", function () {
		var y = $(this),
			off_set = $(scroll_options.scroll_item_selector).last().offset();
		if (
			!under_loading &&
			!loading_finished &&
			y.scrollTop() >= Math.abs(off_set.top - (y.height() - 150))
		) {
			call_ajax();
		}
	});
})(jQuery, window, document);