<?php
	$res_arr = [];

	function dir_array($dir, $reverse = false) {
		$arr = scandir($dir);
		array_shift($arr);
		array_shift($arr);
		natsort($arr);
		if ($reverse) {$arr = array_reverse($arr);}
		return $arr;
	}

	function super_print_r($output) {
		echo '<pre>';
		print_r($output);
		echo '<pre>';
	}

	function super_scan($dir, $deep_reverse = null, $deep = 2) {
		global $res_arr;
		if (isset($deep_reverse) and ($deep === $deep_reverse)) {
			$dir_arr = dir_array($dir, true);
		} else {
			$dir_arr = dir_array($dir);
		}
		$result = [];
		foreach ($dir_arr as $folder) {
			if (is_file("$dir/$folder")) {
				$res_arr[] = "$dir/$folder";
			} else {
				super_scan("$dir/$folder", $deep_reverse, $deep+1);
			}
		}
	}

	function caption($file) {
		$file = file($file);
		$result = '';
		foreach ($file as $val) {
			$vals = strval($val);
			$vals = trim(preg_replace('/\s+/', ' ', $vals));
			if (strpos($vals, "&sup2;")) {
				$result .= "
				<div class='caption__footage'>$vals</div>";
			} elseif (strpos($vals, 'дней') or strpos($vals, 'дня') or strpos($vals, 'день')){
				$result .= "
				<div class='caption__time'>$vals</div>
			</div>";
			} else {
				$result .= "
			<div class='caption'>
				<div class='caption__address'>$vals</div>";
			}
		}
		return $result;
	}

	function super_photo($arr, $number) {
		$slide_count = 1;
		$slider_photo = '';
		$last_el = $arr[count($arr)-1];
		foreach ($arr as $el) {

			$explode_el = explode('/', $el);

			if ((isset($prev_el) and (($explode_el[2] !== $explode_prev_el[2]) or ($explode_el[3] !== $explode_prev_el[3]))) or ($el === $last_el)) {
				if ($slide_count === $number) {
					return $slider_photo;
				}
				$slider_photo = '';
				$slide_count++;
			}

			if ($explode_el[4] === 'full') {
				$medium = str_replace('full', 'medium', $el);
				$slider_photo .= "
					<div class='swiper-slide'>
						<div class='photo'>
							<a href='$el' class='fancybox'>
								<img data-src='$medium' alt='' class='swiper-lazy'>
								<div class='swiper-lazy-preloader'></div>
							</a>
						</div>
					</div>";
			}

			$prev_el = $el;
			$explode_prev_el = $explode_el;
		}
	}

	function super_thumbs($arr, $number) {
		$slide_count = 1;
		$slider_photo = '';
		$last_el = $arr[count($arr)-1];
		foreach ($arr as $el) {

			$explode_el = explode('/', $el);

			if ((isset($prev_el) and (($explode_el[2] !== $explode_prev_el[2]) or ($explode_el[3] !== $explode_prev_el[3]))) or ($el === $last_el)) {
				if ($slide_count === $number) {
					return $slider_photo;
				}
				$slider_photo = '';
				$slide_count++;
			}

			if ($explode_el[4] === 'full') {
				$thumbs = str_replace('full', 'thumbs', $el);
				$slider_photo .= "
					<div class='swiper-slide'>
						<img data-src='$thumbs' alt='' class='swiper-lazy'>
						<div class='swiper-lazy-preloader'></div>
					</div>";
			}

			$prev_el = $el;
			$explode_prev_el = $explode_el;
		}
	}

	function super_division($arr) {
		$forSlider1 = '0';
		$forSlider2 = '';
		$fs = 0;
		$slider= "<div class='swiper-container gallery-all'>
	<div class='swiper-wrapper'>";
		$slide_count = 1;
		$last_el = $arr[count($arr)-1];
		foreach ($arr as $el) {
			$explode_el = explode('/', $el);

			if ((isset($prev_el) and (($explode_el[2] !== $explode_prev_el[2]) or ($explode_el[3] !== $explode_prev_el[3]))) or ($el === $last_el)) {
				if ($slide_count === 1) {
					$slider .= "
		<div class='swiper-slide'>
			<div class='swiper-container gallery-top gallery-top-active'>
				<div class='swiper-wrapper'>" .
				super_photo($arr, $slide_count) . "
				</div>
			</div>
			<div class='swiper-container gallery-thumbs gallery-thumbs-active'>
				<div class='swiper-wrapper'>" .
				super_thumbs($arr, $slide_count) . "
				</div>
			</div>";
				} else {
					$slider .= "
		<div class='swiper-slide'>
			<div class='swiper-container gallery-top'>
				<div class='swiper-wrapper'>" .
				super_photo($arr, $slide_count) . "
				</div>
			</div>
			<div class='swiper-container gallery-thumbs'>
				<div class='swiper-wrapper'>" .
				super_thumbs($arr, $slide_count) . "
				</div>
			</div>";
				}

				$slider .= $slider_caption;
				$slider .= "
		</div>";

				$slide_count++;
				$forSlider2 .= ",$fs";
			}

			if ($explode_el[4] === 'description.txt') {
				$slider_caption = caption($el);
			}


			if (isset($explode_prev_el[2]) and ($explode_el[2] !== $explode_prev_el[2])) {
				$slide_count_minus_one = $slide_count - 1;
				$forSlider1 .= ",$slide_count_minus_one";
				$fs++;
			}

			$prev_el = $el;
			$explode_prev_el = $explode_el;

		}
		$slider .= "
	</div>
	<div class='swiper-pagination'></div>
	<div class='swiper-button-next'><span>></span></div>
	<div class='swiper-button-prev'><span><</span></div>
</div>";
		echo "<div>$forSlider1</div>";
		echo "
<div>$forSlider2</div>
";
		return $slider;
	}

	super_scan('uploads', 4);
	// super_print_r($res_arr);
	echo super_division($res_arr);
	// super_print_r(super_division($res_arr));

?>