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<?php
namespace League\Flysystem\Plugin;
use BadMethodCallException;
use League\Flysystem\FilesystemInterface;
use League\Flysystem\PluginInterface;
use LogicException;
trait PluggableTrait
{
/**
* @var array
*/
protected $plugins = [];
/**
* Register a plugin.
*
* @param PluginInterface $plugin
*
* @return $this
*/
public function addPlugin(PluginInterface $plugin)
{
$this->plugins[$plugin->getMethod()] = $plugin;
return $this;
}
/**
* Find a specific plugin.
*
* @param string $method
*
* @throws LogicException
*
* @return PluginInterface $plugin
*/
protected function findPlugin($method)
{
if ( ! isset($this->plugins[$method])) {
throw new PluginNotFoundException('Plugin not found for method: ' . $method);
}
if ( ! method_exists($this->plugins[$method], 'handle')) {
throw new LogicException(get_class($this->plugins[$method]) . ' does not have a handle method.');
}
return $this->plugins[$method];
}
/**
* Invoke a plugin by method name.
*
* @param string $method
* @param array $arguments
*
* @return mixed
*/
protected function invokePlugin($method, array $arguments, FilesystemInterface $filesystem)
{
$plugin = $this->findPlugin($method);
$plugin->setFilesystem($filesystem);
$callback = [$plugin, 'handle'];
return call_user_func_array($callback, $arguments);
}
/**
* Plugins pass-through.
*
* @param string $method
* @param array $arguments
*
* @throws BadMethodCallException
*
* @return mixed
*/
public function __call($method, array $arguments)
{
try {
return $this->invokePlugin($method, $arguments, $this);
} catch (PluginNotFoundException $e) {
throw new BadMethodCallException(
'Call to undefined method '
. get_class($this)
. '::' . $method
);
}
}
}
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