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<?php
/**
* SPDX-FileCopyrightText: 2016 Nextcloud GmbH and Nextcloud contributors
* SPDX-License-Identifier: AGPL-3.0-or-later
*/
namespace OC\RichObjectStrings;
use OCP\RichObjectStrings\Definitions;
use OCP\RichObjectStrings\InvalidObjectExeption;
use OCP\RichObjectStrings\IValidator;
/**
* Class Validator
*
* @package OCP\RichObjectStrings
* @since 11.0.0
*/
class Validator implements IValidator {
/** @var Definitions */
protected $definitions;
/** @var array[] */
protected $requiredParameters = [];
/**
* Constructor
*
* @param Definitions $definitions
*/
public function __construct(Definitions $definitions) {
$this->definitions = $definitions;
}
/**
* @param string $subject
* @param array[] $parameters
* @throws InvalidObjectExeption
* @since 11.0.0
*/
public function validate($subject, array $parameters) {
$matches = [];
$result = preg_match_all('/\{([a-z0-9]+)\}/i', $subject, $matches);
if ($result === false) {
throw new InvalidObjectExeption();
}
if (!empty($matches[1])) {
foreach ($matches[1] as $parameter) {
if (!isset($parameters[$parameter])) {
throw new InvalidObjectExeption('Parameter is undefined');
}
}
}
foreach ($parameters as $parameter) {
if (!\is_array($parameter)) {
throw new InvalidObjectExeption('Parameter is malformed');
}
$this->validateParameter($parameter);
}
}
/**
* @param array $parameter
* @throws InvalidObjectExeption
*/
protected function validateParameter(array $parameter) {
if (!isset($parameter['type'])) {
throw new InvalidObjectExeption('Object type is undefined');
}
$definition = $this->definitions->getDefinition($parameter['type']);
$requiredParameters = $this->getRequiredParameters($parameter['type'], $definition);
$missingKeys = array_diff($requiredParameters, array_keys($parameter));
if (!empty($missingKeys)) {
throw new InvalidObjectExeption('Object is invalid, missing keys:' . json_encode($missingKeys));
}
foreach ($parameter as $key => $value) {
if (!is_string($key)) {
throw new InvalidObjectExeption('Object is invalid, key ' . $key . ' is not a string');
}
if (!is_string($value)) {
throw new InvalidObjectExeption('Object is invalid, value ' . $value . ' is not a string');
}
}
}
/**
* @param string $type
* @param array $definition
* @return string[]
*/
protected function getRequiredParameters($type, array $definition) {
if (isset($this->requiredParameters[$type])) {
return $this->requiredParameters[$type];
}
$this->requiredParameters[$type] = [];
foreach ($definition['parameters'] as $parameter => $data) {
if ($data['required']) {
$this->requiredParameters[$type][] = $parameter;
}
}
return $this->requiredParameters[$type];
}
}
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