<?php
declare(strict_types=1);
namespace ParagonIE\Ionizer\Filter;
use ParagonIE\Ionizer\InputFilter;
use ParagonIE\Ionizer\InvalidDataException;
/**
* Class AllowList
* @package ParagonIE\Ionizer\Filter
*/
class AllowList extends InputFilter
{
/**
* @var array<int, mixed>
*/
protected $allowedValues = [];
/**
* AllowList constructor.
* @param scalar ...$values
*/
public function __construct(...$values)
{
$this->addToWhiteList(...$values);
}
/**
* @param array<int, scalar> $values
* @return self
*/
protected function addToWhiteList(...$values)
{
switch ($this->type) {
case 'bool':
/**
* @var array<int, bool> $values
* @var bool $val
*/
foreach ($values as $val) {
$this->allowedValues []= (bool) $val;
}
break;
case 'float':
/**
* @var array<int, float> $values
* @var float $val
*/
foreach ($values as $val) {
$this->allowedValues []= (float) $val;
}
break;
case 'int':
/**
* @var array<int, int> $values
* @var int $val
*/
foreach ($values as $val) {
$this->allowedValues []= (int) $val;
}
break;
case 'string':
/**
* @var array<int, string> $values
* @var string $val
*/
foreach ($values as $val) {
$this->allowedValues []= (string) $val;
}
break;
default:
/**
* @var array<int, string> $values
* @var string $val
*/
foreach ($values as $val) {
$this->allowedValues []= $val;
}
}
return $this;
}
/**
* Process data using the filter rules.
*
* @param mixed $data
* @return mixed
* @throws \TypeError
* @throws InvalidDataException
*/
public function process($data = null)
{
if (!empty($this->allowedValues)) {
if (!\in_array($data, $this->allowedValues, true)) {
$data = null;
}
}
/** @var string|int|float|bool|null $data */
$data = $this->applyCallbacks($data, 0);
if ($data === null) {
/** @var string|int|float|bool|null $data */
$data = $this->default;
}
// For type strictness:
switch ($this->type) {
case 'bool':
/** @var bool $data */
return (bool) $data;
case 'float':
/** @var float $data */
return (float) $data;
case 'int':
/** @var int $data */
return (int) $data;
case 'string':
/** @var string $data */
return (string) $data;
default:
return $data;
}
}
}
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