Landing::exportLanding

static function exportLanding(int $landingId, string $fileName): ?array
{
	// base fields
	$landing = LandingCore::getList([
		'filter' => [
			'ID' => $landingId
		]
	])->fetch();
	if (!$landing)
	{
		return null;
	}
	$landing['DATE_CREATE'] = (string)$landing['DATE_CREATE'];
	$landing['DATE_MODIFY'] = (string)$landing['DATE_MODIFY'];
	$landing['DATE_PUBLIC'] = (string)$landing['DATE_PUBLIC'];
	$files = [];

	// additional fields
	$hookFields = [];
	foreach (Hook::getForLanding($landingId) as $hookCode => $hook)
	{
		if ($hookCode == 'SETTINGS')
		{
			continue;
		}
		foreach ($hook->getFields() as $fCode => $field)
		{
			$hookCodeFull = $hookCode . '_' . $fCode;
			$hookFields[$hookCodeFull] = $field->getValue();
			if (!$hookFields[$hookCodeFull])
			{
				unset($hookFields[$hookCodeFull]);
			}
			else if (in_array($hookCodeFull, Hook::HOOKS_CODES_FILES))
			{
				if ($hookFields[$hookCodeFull] > 0)
				{
					$files[] = ['ID' => $hookFields[$hookCodeFull]];
				}
			}
		}
	}
	$landing['ADDITIONAL_FIELDS'] = $hookFields;

	// site layout template
	$landing['TEMPLATE_REF'] = [];
	if ($landing['TPL_ID'])
	{
		$landing['TEMPLATE_REF'] = TemplateRef::getForLanding($landingId);
	}

	$landingInstance = LandingCore::createInstance($landingId);

	// saved block (favorites)
	if ($landing['TPL_CODE'])
	{
		$tplCode = $landing['TPL_CODE'];
		if (strpos($tplCode, '@'))
		{
			[, $tplCode] = explode('@', $tplCode);
		}
		foreach (Block::getFavorites($tplCode) as $row)
		{
			$landingInstance->addBlockToCollection(new Block($row['ID']));
		}
	}

	// blocks
	$landing['BLOCKS'] = [];
	foreach ($landingInstance->getBlocks() as $block)
	{
		if (!$block->isActive())
		{
			continue;
		}

		// repo blocks
		$repoBlock = [];
		if ($block->getRepoId())
		{
			$repoBlock = Repo::getBlock(
				$block->getRepoId()
			);
			if ($repoBlock)
			{
				$repoBlock = [
					'app_code' => $repoBlock['block']['app_code'],
					'xml_id' => $repoBlock['block']['xml_id']
				];
			}
		}

		$repoInfo = [];
		if ($block->getRepoId())
		{
			$repoInfo = Repo::getById($block->getRepoId())->fetch();
			if ($repoInfo)
			{
				$repoInfo = [
					'NAME' => $repoInfo['NAME'],
					'DESCRIPTION' => $repoInfo['DESCRIPTION'],
					'SECTIONS' => $repoInfo['SECTIONS'],
					'PREVIEW' => $repoInfo['PREVIEW'],
					'MANIFEST' => $repoInfo['MANIFEST'],
					'CONTENT' => $repoInfo['CONTENT']
				];
			}
			else
			{
				$repoInfo = [];
			}
		}

		$metaBlock = $block->getMeta();
		$exportBlock = $block->export();
		$exportItem = array(
			'code' => $block->getCode(),
			'old_id' => $block->getId(),
			'access' => $block->getAccess(),
			'anchor' => $block->getLocalAnchor(),
			'designed' => $block->isDesigned(),
			'meta' => $metaBlock,
			'full_content' => $block->isDesigned() ? $block->getContent() : null,
			'repo_block' => $repoBlock,
			'repo_info' => $repoInfo,
			'cards' => $exportBlock['cards'],
			'nodes' => $exportBlock['nodes'],
			'menu' => $exportBlock['menu'],
			'style' => $exportBlock['style'],
			'attrs' => $exportBlock['attrs'],
			'dynamic' => $exportBlock['dynamic']
		);

		foreach ($exportItem as $key => $item)
		{
			if (!$item)
			{
				unset($exportItem[$key]);
			}
		}
		$landing['BLOCKS'][$block->getId()] = $exportItem;

		$blockFiles = File::getFilesFromBlockContent(
			$block->getId(),
			$block->getContent()
		);
		foreach ($blockFiles as $fileId)
		{
			$files[] = ['ID' => $fileId];
		}
		// favorite cover
		if (intval($metaBlock['FAVORITE_META']['preview'] ?? 0) > 0)
		{
			$files[] = ['ID' => intval($metaBlock['FAVORITE_META']['preview'])];
		}
	}

	return [
		'FILE_NAME' => str_replace(
			['#site_id#', '#landing_id#'],
			[$landing['SITE_ID'], $landing['ID']],
			$fileName
		),
		'CONTENT' => $landing,
		'FILES' => $files
	];
}