SectionsList::getSectionsToMap

public function getSectionsToMap()
{
	if (empty($this->mappedAlbums))
	{
		$this->mappedAlbums = Map::getMappedAlbums($this->exportId);
	}
	if (empty($this->mappedSections))
	{
		$this->mappedSections = Map::getMappedSections($this->exportId);
	}

	$sectionsUnformatted = $this->getListMappedSections();
	$sectionsFormatted = array();

//		Empty settings = empty result. It's law
	if (empty($this->mappedSections))
	{
		return array();
	}

	$sections = $this->getSections(true);
	$vkCategories = new VkCategories($this->exportId);
	$vkCategoriesList = $vkCategories->getList(false);

	foreach ($sectionsUnformatted as $sectionUnformatted)
	{
		$currSection = $sections[$sectionUnformatted["IBLOCK"]][$sectionUnformatted["BX_ID"]];

//			processing only not empty sections
//			if ($currSection["ELEMENT_CNT"] <= 0)
//				continue;

//			if first item to this vk-album
		if (!array_key_exists($sectionUnformatted["TO_ALBUM"], $sectionsFormatted))
		{
			$sectionsFormatted[$sectionUnformatted["TO_ALBUM"]] = array(
				"TO_ALBUM" => $sectionUnformatted["TO_ALBUM"],
				"ITEMS" => array(),
				"ELEMENT_CNT" => 0,
			);

			if (array_key_exists($sectionUnformatted["TO_ALBUM"], $this->mappedAlbums))
			{
				$albumVkId = $this->mappedAlbums[$sectionUnformatted["TO_ALBUM"]]["ALBUM_VK_ID"];
				$sectionsFormatted[$sectionUnformatted["TO_ALBUM"]]["ALBUM_VK_ID"] = $albumVkId;
				$sectionsFormatted[$sectionUnformatted["TO_ALBUM"]]["ALBUM_VK_URL"] = $this->createVkAlbumLink($albumVkId);
			}
		}

//			create toAlbum name only from section, then root for this album. Take alias if exist, or just name
		if ($sectionUnformatted["TO_ALBUM"] == $sectionUnformatted["BX_ID"])
		{
			$sectionsFormatted[$sectionUnformatted["TO_ALBUM"]]["TO_ALBUM_NAME"] = $sectionUnformatted["TO_ALBUM_ALIAS"] ?
				$sectionUnformatted["TO_ALBUM_ALIAS"] :
				trim($currSection["NAME"]);
		}

//			format current item
		$vkCategoryName = $vkCategoriesList[$sectionUnformatted["VK_CATEGORY"]]['NAME'];
		$sectionName = $currSection["NAME"];
		$sectionElementCnt = $currSection["ELEMENT_CNT"];

		$item = array(
			"BX_ID" => $sectionUnformatted["BX_ID"],
			"NAME" => $sectionName,
			"VK_CATEGORY_ID" => $sectionUnformatted["VK_CATEGORY"],
			"VK_CATEGORY_NAME" => $vkCategoryName,
			"ELEMENT_CNT" => $sectionElementCnt,
			"IBLOCK" => $sectionUnformatted["IBLOCK"],
			"LEFT_MARGIN" => $currSection["LEFT_MARGIN"],
			"DEPTH_LEVEL" => $currSection["DEPTH_LEVEL"],
		);

		if (isset($item["BX_ID"]) && isset($item["IBLOCK"]))
		{
			$item["SECTION_URL"] = $this->createSectionLink($item["IBLOCK"], $item["BX_ID"]);
		}

		$sectionsFormatted[$sectionUnformatted["TO_ALBUM"]]["ITEMS"][$item["LEFT_MARGIN"]] = $item;
		$sectionsFormatted[$sectionUnformatted["TO_ALBUM"]]["ELEMENT_CNT"] += $sectionElementCnt;
	}

//		sorted sections for each album by level, add tabs to names
	$sectionsFormatted = self::sortMapElementItems($sectionsFormatted);

	return $sectionsFormatted;
}