yload[0]);
    }

    /**
     * Check if the event should be broadcasted by the condition.
     *
     * @param  mixed  $event
     * @return bool
     */
    protected function broadcastWhen($event)
    {
        return method_exists($event, 'broadcastWhen')
                ? $event->broadcastWhen() : true;
    }

    /**
     * Broadcast the given event class.
     *
     * @param  \Illuminate\Contracts\Broadcasting\ShouldBroadcast  $event
     * @return void
     */
    protected function broadcastEvent($event)
    {
        $this->container->make(BroadcastFactory::class)->queue($event);
    }

    /**
     * Get all of the listeners for a given event name.
     *
     * @param  string  $eventName
     * @return array
     */
    public function getListeners($eventName)
    {
        $listeners = $this->listeners[$eventName] ?? [];

        $listeners = array_merge(
            $listeners,
            $this->wildcardsCache[$eventName] ?? $this->getWildcardListeners($eventName)
        );

        return class_exists($eventName, false)
                    ? $this->addInterfaceListeners($eventName, $listeners)
                    : $listeners;
    }

    /**
     * Get the wildcard listeners for the event.
     *
     * @param  string  $eventName
     * @return array
     */
    protected function getWildcardListeners($eventName)
    {
        $wildcards = [];

        foreach ($this->wildcards as $key => $listeners) {
            if (Str::is($key, $eventName)) {
                $wildcards = array_merge($wildcards, $listeners);
            }
        }

        return $this->wildcardsCache[$eventName] = $wildcards;
    }

    /**
     * Add the listeners for the event's interfaces to the given array.
     *
     * @param  string  $eventName
     * @param  array  $listeners
     * @return array
     */
    protected function addInterfaceListeners($eventName, array $listeners = [])
    {
        foreach (class_implements($eventName) as $interface) {
            if (isset($this->listeners[$interface])) {
                foreach ($this->listeners[$interface] as $names) {
                    $listeners = array_merge($listeners, (array) $names);
                }
            }
        }

        return $listeners;
    }

    /**
     * Register an event listener with the dispatcher.
     *
     * @param  \Closure|string|array  $listener
     * @param  bool  $wildcard
     * @return \Closure
     */
    public function makeListener($listener, $wildcard = false)
    {
        if (is_string($listener)) {
            return $this->createClassListener($listener, $wildcard);
        }

        if (is_array($listener) && isset($listener[0]) && is_string($listener[0])) {
            return $this->createClassListener($listener, $wildcard);
        }

        return function ($event, $payload) use ($listener, $wildcard) {
            if ($wildcard) {
                return $listener($event, $payload);
            }

            return $listener(...array_values($payload));
        };
    }

    /**
     * Create a class based listener using the IoC container.
     *
     * @param  string  $listener
     * @param  bool  $wildcard
     * @return \Closure
     */
    public function createClassListener($listener, $wildcard = false)
    {
        return function ($event, $payload) use ($listener, $wildcard) {
            if ($wildcard) {
                return call_user_func($this->createClassCallable($listener), $event, $payload);
            }

            $callable = $this->createClassCallable($listener);

            return $callable(...array_values($payload));
        };
    }

    /**
     * Create the class based event callable.
     *
     * @param  array|string  $listener
     * @return callable
     */
    protected function createClassCallable($listener)
    {
        [$class, $method] = is_array($listener)
                            ? $listener
                            : $this->parseClassCallable($listener);

        if (! method_exists($class, $method)) {
            $method = '__invoke';
        }

        if ($this->handlerShouldBeQueued($class)) {
            return $this->createQueuedHandlerCallable($class, $method);
        }

        $listener = $this->container->make($class);

        return $this->handlerShouldBeDispatchedAfterDatabaseTransactions($listener)
                    ? $this->createCallbackForListenerRunningAfterCommits($listener, $method)
                    : [$listener, $method];
    }

    /**
     * Parse the class listener into class and method.
     *
     * @param  string  $listener
     * @return array
     */
    protected function parseClassCallable($listener)
    {
        return Str::parseCallback($listener, 'handle');
    }

    /**
     * Determine if the event handler class should be queued.
     *
     * @param  string  $class
     * @return bool
     */
    protected function handlerShouldBeQueued($class)
    {
        try {
            return (new ReflectionClass($class))->implementsInterface(
                ShouldQueue::class
            );
        } catch (Exception $e) {
            return false;
        }
    }

    /**
     * Create a callable for putting an event handler on the queue.
     *
     * @param  string  $class
     * @param  string  $method
     * @return \Closure
     */
    protected function createQueuedHandlerCallable($class, $method)
    {
        return function () use ($class, $method) {
            $arguments = array_map(function ($a) {
                return is_object($a) ? clone $a : $a;
            }, func_get_args());

            if ($this->handlerWantsToBeQueued($class, $arguments)) {
                $this->queueHandler($class, $method, $arguments);
            }
        };
    }

    /**
     * Determine if the given event handler should be dispatched after all database transactions have committed.
     *
     * @param  object|mixed  $listener
     * @return bool
     */
    protected function handlerShouldBeDispatchedAfterDatabaseTransactions($listener)
    {
        return ($listener->afterCommit ?? null) && $this->container->bound('db.transactions');
    }

    /**
     * Create a callable for dispatching a listener after database transactions.
     *
     * @param  mixed  $listener
     * @param  string  $method
     * @return \Closure
     */
    protected function createCallbackForListenerRunningAfterCommits($listener, $method)
    {
        return function () use ($method, $listener) {
            $payload = func_get_args();

            $this->container->make('db.transactions')->addCallback(
                function () use ($listener, $method, $payload) {
                    $listener->$method(...$payload);
                }
            );
        };
    }

    /**
     * Determine if the event handler wants to be queued.
     *
     * @param  string  $class
     * @param  array  $arguments
     * @return bool
     */
    protected function handlerWantsToBeQueued($class, $arguments)
    {
        $instance = $this->container->make($class);

        if (method_exists($instance, 'shouldQueue')) {
            return $instance->shouldQueue($arguments[0]);
        }

        return true;
    }

    /**
     * Queue the handler class.
     *
     * @param  string  $class
     * @param  string  $method
     * @param  array  $arguments
     * @return void
     */
    protected function queueHandler($class, $method, $arguments)
    {
        [$listener, $job] = $this->createListenerAndJob($class, $method, $arguments);

        $connection = $this->resolveQueue()->connection(method_exists($listener, 'viaConnection')
                    ? $listener->viaConnection()
                    : $listener->connection ?? null);

        $queue = method_exists($listener, 'viaQueue')
                    ? $listener->viaQueue()
                    : $listener->queue ?? null;

        isset($listener->delay)
                    ? $connection->laterOn($queue, $listener->delay, $job)
                    : $connection->pushOn($queue, $job);
    }

    /**
     * Create the listener and job for a queued listener.
     *
     * @param  string  $class
     * @param  string  $method
     * @param  array  $arguments
     * @return array
     */
    protected function createListenerAndJob($class, $method, $arguments)
    {
        $listener = (new ReflectionClass($class))->newInstanceWithoutConstructor();

        return [$listener, $this->propagateListenerOptions(
            $listener, new CallQueuedListener($class, $method, $arguments)
        )];
    }

    /**
     * Propagate listener options to the job.
     *
     * @param  mixed  $listener
     * @param  mixed  $job
     * @return mixed
     */
    protected function propagateListenerOptions($listener, $job)
    {
        return tap($job, function ($job) use ($listener) {
            $job->afterCommit = property_exists($listener, 'afterCommit') ? $listener->afterCommit : null;
            $job->backoff = method_exists($listener, 'backoff') ? $listener->backoff() : ($listener->backoff ?? null);
            $job->maxExceptions = $listener->maxExceptions ?? null;
            $job->retryUntil = method_exists($listener, 'retryUntil') ? $listener->retryUntil() : null;
            $job->shouldBeEncrypted = $listener instanceof ShouldBeEncrypted;
            $job->timeout = $listener->timeout ?? null;
            $job->tries = $listener->tries ?? null;

            $job->through(array_merge(
                method_exists($listener, 'middleware') ? $listener->middleware() : [],
                $listener->middleware ?? []
            ));
        });
    }

    /**
     * Remove a set of listeners from the dispatcher.
     *
     * @param  string  $event
     * @return void
     */
    public function forget($event)
    {
        if (Str::contains($event, '*')) {
            unset($this->wildcards[$event]);
        } else {
            unset($this->listeners[$event]);
        }

        foreach ($this->wildcardsCache as $key => $listeners) {
            if (Str::is($event, $key)) {
                unset($this->wildcardsCache[$key]);
            }
        }
    }

    /**
     * Forget all of the pushed listeners.
     *
     * @return void
     */
    public function forgetPushed()
    {
        foreach ($this->listeners as $key => $value) {
            if (Str::endsWith($key, '_pushed')) {
                $this->forget($key);
            }
        }
    }

    /**
     * Get the queue implementation from the resolver.
     *
     * @return \Illuminate\Contracts\Queue\Queue
     */
    protected function resolveQueue()
    {
        return call_user_func($this->queueResolver);
    }

    /**
     * Set the queue resolver implementation.
     *
     * @param  callable  $resolver
     * @return $this
     */
    public function setQueueResolver(callable $resolver)
    {
        $this->queueResolver = $resolver;

        return $this;
    }
}