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| 1 | <?php |
| 2 | |
| 3 | declare(strict_types=1); |
| 4 | |
| 5 | namespace Engelsystem\Events; |
| 6 | |
| 7 | use Illuminate\Support\Arr; |
| 8 | use Illuminate\Support\Str; |
| 9 | |
| 10 | class EventDispatcher |
| 11 | { |
| 12 | /** @var callable[] */ |
| 13 | protected array $listeners; |
| 14 | |
| 15 | public function listen(array|string $events, callable|string $listener): void |
| 16 | { |
| 17 | foreach ((array) $events as $event) { |
| 18 | $this->listeners[$event][] = $listener; |
| 19 | } |
| 20 | } |
| 21 | |
| 22 | public function forget(string $event): void |
| 23 | { |
| 24 | unset($this->listeners[$event]); |
| 25 | } |
| 26 | |
| 27 | public function fire(string|object $event, mixed $payload = [], bool $halt = false): mixed |
| 28 | { |
| 29 | return $this->dispatch($event, $payload, $halt); |
| 30 | } |
| 31 | |
| 32 | /** |
| 33 | * @param bool $halt Stop on first non-null return |
| 34 | */ |
| 35 | public function dispatch(string|object $event, mixed $payload = [], bool $halt = false): mixed |
| 36 | { |
| 37 | if (is_object($event)) { |
| 38 | $payload = $event; |
| 39 | $event = get_class($event); |
| 40 | } |
| 41 | |
| 42 | $listeners = []; |
| 43 | if (isset($this->listeners[$event])) { |
| 44 | $listeners = $this->listeners[$event]; |
| 45 | } |
| 46 | |
| 47 | $responses = []; |
| 48 | foreach ($listeners as $listener) { |
| 49 | if (!is_callable($listener) && is_string($listener) && !Str::contains($listener, '@')) { |
| 50 | $listener = $listener . '@handle'; |
| 51 | } |
| 52 | |
| 53 | $response = app()->call($listener, ['event' => $event] + Arr::wrap($payload)); |
| 54 | |
| 55 | // Return the events response |
| 56 | if ($halt && !is_null($response)) { |
| 57 | return $response; |
| 58 | } |
| 59 | |
| 60 | // Stop further event propagation |
| 61 | if ($response === false) { |
| 62 | break; |
| 63 | } |
| 64 | |
| 65 | $responses[] = $response; |
| 66 | } |
| 67 | |
| 68 | return $halt ? null : $responses; |
| 69 | } |
| 70 | } |