49 lines
1.1 KiB
PHP
49 lines
1.1 KiB
PHP
<?php
|
|
|
|
namespace App\Services;
|
|
|
|
use Closure;
|
|
use Illuminate\Support\Arr;
|
|
use Illuminate\Support\Collection;
|
|
|
|
class Filter
|
|
{
|
|
protected $listeners = [];
|
|
|
|
public function add(string $hook, Closure $callback, $priority = 20)
|
|
{
|
|
if (!isset($this->listeners[$hook])) {
|
|
$this->listeners[$hook] = collect();
|
|
}
|
|
|
|
$this->listeners[$hook]->push([
|
|
'callback' => $callback,
|
|
'priority' => $priority,
|
|
]);
|
|
}
|
|
|
|
public function apply(string $hook, $init, $args = [])
|
|
{
|
|
$listeners = $this->getListeners($hook);
|
|
if ($listeners->isNotEmpty()) {
|
|
return $this->listeners[$hook]
|
|
->sortBy('priority')
|
|
->reduce(function ($carry, $item) use ($args) {
|
|
return call_user_func($item['callback'], $carry, ...$args);
|
|
}, $init);
|
|
} else {
|
|
return $init;
|
|
}
|
|
}
|
|
|
|
public function remove(string $hook)
|
|
{
|
|
unset($this->listeners[$hook]);
|
|
}
|
|
|
|
public function getListeners(string $hook): Collection
|
|
{
|
|
return Arr::get($this->listeners, $hook, collect());
|
|
}
|
|
}
|