<?php

namespace TablePress\PhpOffice\PhpSpreadsheet\Reader\Xml;

use TablePress\PhpOffice\PhpSpreadsheet\Document\Properties as DocumentProperties;
use TablePress\PhpOffice\PhpSpreadsheet\Spreadsheet;
use SimpleXMLElement;

class Properties
{
	/**
	 * @var Spreadsheet
	 */
	protected $spreadsheet;

	public function __construct(Spreadsheet $spreadsheet)
	{
		$this->spreadsheet = $spreadsheet;
	}

	public function readProperties(SimpleXMLElement $xml, array $namespaces): void
	{
		$this->readStandardProperties($xml);
		$this->readCustomProperties($xml, $namespaces);
	}

	protected function readStandardProperties(SimpleXMLElement $xml): void
	{
		if (isset($xml->DocumentProperties[0])) {
			$docProps = $this->spreadsheet->getProperties();

			foreach ($xml->DocumentProperties[0] as $propertyName => $propertyValue) {
				$propertyValue = (string) $propertyValue;

				$this->processStandardProperty($docProps, $propertyName, $propertyValue);
			}
		}
	}

	protected function readCustomProperties(SimpleXMLElement $xml, array $namespaces): void
	{
		if (isset($xml->CustomDocumentProperties)) {
			$docProps = $this->spreadsheet->getProperties();

			foreach ($xml->CustomDocumentProperties[0] as $propertyName => $propertyValue) {
				$propertyAttributes = self::getAttributes($propertyValue, $namespaces['dt']);
				$propertyName = (string) preg_replace_callback('/_x([0-9a-f]{4})_/i', [$this, 'hex2str'], $propertyName);

				$this->processCustomProperty($docProps, $propertyName, $propertyValue, $propertyAttributes);
			}
		}
	}

	protected function processStandardProperty(
		DocumentProperties $docProps,
		string $propertyName,
		string $stringValue
	): void {
		switch ($propertyName) {
			case 'Title':
				$docProps->setTitle($stringValue);

				break;
			case 'Subject':
				$docProps->setSubject($stringValue);

				break;
			case 'Author':
				$docProps->setCreator($stringValue);

				break;
			case 'Created':
				$docProps->setCreated($stringValue);

				break;
			case 'LastAuthor':
				$docProps->setLastModifiedBy($stringValue);

				break;
			case 'LastSaved':
				$docProps->setModified($stringValue);

				break;
			case 'Company':
				$docProps->setCompany($stringValue);

				break;
			case 'Category':
				$docProps->setCategory($stringValue);

				break;
			case 'Manager':
				$docProps->setManager($stringValue);

				break;
			case 'Keywords':
				$docProps->setKeywords($stringValue);

				break;
			case 'Description':
				$docProps->setDescription($stringValue);

				break;
		}
	}

	protected function processCustomProperty(
		DocumentProperties $docProps,
		string $propertyName,
		?SimpleXMLElement $propertyValue,
		SimpleXMLElement $propertyAttributes
	): void {
		$propertyType = DocumentProperties::PROPERTY_TYPE_UNKNOWN;

		switch ((string) $propertyAttributes) {
			case 'string':
				$propertyType = DocumentProperties::PROPERTY_TYPE_STRING;
				$propertyValue = trim((string) $propertyValue);

				break;
			case 'boolean':
				$propertyType = DocumentProperties::PROPERTY_TYPE_BOOLEAN;
				$propertyValue = (bool) $propertyValue;

				break;
			case 'integer':
				$propertyType = DocumentProperties::PROPERTY_TYPE_INTEGER;
				$propertyValue = (int) $propertyValue;

				break;
			case 'float':
				$propertyType = DocumentProperties::PROPERTY_TYPE_FLOAT;
				$propertyValue = (float) $propertyValue;

				break;
			case 'dateTime.tz':
				$propertyType = DocumentProperties::PROPERTY_TYPE_DATE;
				$propertyValue = trim((string) $propertyValue);

				break;
		}

		$docProps->setCustomProperty($propertyName, $propertyValue, $propertyType);
	}

	protected function hex2str(array $hex): string
	{
		return mb_chr((int) hexdec($hex[1]), 'UTF-8');
	}

	private static function getAttributes(?SimpleXMLElement $simple, string $node): SimpleXMLElement
	{
		return ($simple === null)
			? new SimpleXMLElement('<xml></xml>')
			: ($simple->attributes($node) ?? new SimpleXMLElement('<xml></xml>'));
	}
}
