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<?php
namespace Rakit\Validation\Rules\Traits;
use InvalidArgumentException;
use Rakit\Validation\Helper;
trait FileTrait
{
/**
* Check whether value is from $_FILES
*
* @param mixed $value
* @return bool
*/
public function isValueFromUploadedFiles($value): bool
{
if (!is_array($value)) {
return false;
}
$keys = ['name', 'type', 'tmp_name', 'size', 'error'];
foreach ($keys as $key) {
if (!array_key_exists($key, $value)) {
return false;
}
}
return true;
}
/**
* Check the $value is uploaded file
*
* @param mixed $value
* @return bool
*/
public function isUploadedFile($value): bool
{
return $this->isValueFromUploadedFiles($value) && is_uploaded_file($value['tmp_name']);
}
/**
* Resolve uploaded file value
*
* @param mixed $value
* @return array|null
*/
public function resolveUploadedFileValue($value)
{
if (!$this->isValueFromUploadedFiles($value)) {
return null;
}
// Here $value should be an array:
// [
// 'name' => string|array,
// 'type' => string|array,
// 'size' => int|array,
// 'tmp_name' => string|array,
// 'error' => string|array,
// ]
// Flatten $value to it's array dot format,
// so our array must be something like:
// ['name' => string, 'type' => string, 'size' => int, ...]
// or for multiple values:
// ['name.0' => string, 'name.1' => string, 'type.0' => string, 'type.1' => string, ...]
// or for nested array:
// ['name.foo.bar' => string, 'name.foo.baz' => string, 'type.foo.bar' => string, 'type.foo.baz' => string, ...]
$arrayDots = Helper::arrayDot($value);
$results = [];
foreach ($arrayDots as $key => $val) {
// Move first key to last key
// name.foo.bar -> foo.bar.name
$splits = explode(".", $key);
$firstKey = array_shift($splits);
$key = count($splits) ? implode(".", $splits) . ".{$firstKey}" : $firstKey;
Helper::arraySet($results, $key, $val);
}
return $results;
}
}