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<?php
/**
* UserFrosting (http://www.userfrosting.com)
*
* @link https://github.com/userfrosting/UserFrosting
* @license https://github.com/userfrosting/UserFrosting/blob/master/licenses/UserFrosting.md (MIT License)
*/
namespace UserFrosting\System;
use Illuminate\Support\Facades\Mockery;
use Illuminate\Support\Facades\Mockery\MockInterface;
use Interop\Container\ContainerInterface;
use RuntimeException;
/**
* Implements base functionality for static "facade" classes.
*
* Adapted from the Laravel Facade class: https://github.com/laravel/framework/blob/5.3/src/Illuminate/Support/Facades/Facade.php
*
* @author Alex Weissman (https://alexanderweissman.com)
* @see https://laravel.com/docs/5.2/facades
* @license https://github.com/laravel/framework/blob/5.3/LICENSE.md (MIT License)
*/
abstract class Facade
{
/**
* The Pimple container being facaded.
*
* @var \Interop\Container\ContainerInterface
*/
protected static $container;
/**
* The resolved object instances.
*
* @var array
*/
protected static $resolvedInstance;
/**
* Hotswap the underlying service instance behind the facade.
*
* @param mixed $instance
* @return void
*/
public static function swap($instance) {
$name = static::getFacadeAccessor();
static::$resolvedInstance[$name] = $instance;
// Replace service in container
unset(static::$container->$name);
static::$container->$name = $instance;
}
/**
* Initiate a mock expectation on the facade.
*
* @param mixed
* @return \Mockery\Expectation
*/
public static function shouldReceive() {
$name = static::getFacadeAccessor();
if (static::isMock()) {
$mock = static::$resolvedInstance[$name];
} else {
$mock = static::createFreshMockInstance($name);
}
return call_user_func_array([$mock, 'shouldReceive'], func_get_args());
}
/**
* Create a fresh mock instance for the given class.
*
* @param string $name
* @return \Mockery\Expectation
*/
protected static function createFreshMockInstance($name) {
static::$resolvedInstance[$name] = $mock = static::createMockByName($name);
$mock->shouldAllowMockingProtectedMethods();
if (isset(static::$container)) {
static::$container->$name = $mock;
}
return $mock;
}
/**
* Create a fresh mock instance for the given class.
*
* @param string $name
* @return \Mockery\Expectation
*/
protected static function createMockByName($name) {
$class = static::getMockableClass($name);
return $class ? Mockery::mock($class) : Mockery::mock();
}
/**
* Determines whether a mock is set as the instance of the facade.
*
* @return bool
*/
protected static function isMock() {
$name = static::getFacadeAccessor();
return isset(static::$resolvedInstance[$name]) && static::$resolvedInstance[$name] instanceof MockInterface;
}
/**
* Get the mockable class for the bound instance.
*
* @return string|null
*/
protected static function getMockableClass() {
if ($root = static::getFacadeRoot()) {
return get_class($root);
}
}
/**
* Get the root object behind the facade.
*
* @return mixed
*/
public static function getFacadeRoot() {
return static::resolveFacadeInstance(static::getFacadeAccessor());
}
/**
* Get the registered name of the component.
*
* @return string
*
* @throws \RuntimeException
*/
protected static function getFacadeAccessor() {
throw new RuntimeException('Facade does not implement getFacadeAccessor method.');
}
/**
* Resolve the facade root instance from the container.
*
* @param string|object $name
* @return mixed
*/
protected static function resolveFacadeInstance($name) {
if (is_object($name)) {
return $name;
}
if (isset(static::$resolvedInstance[$name])) {
return static::$resolvedInstance[$name];
}
return static::$resolvedInstance[$name] = static::$container->$name;
}
/**
* Clear a resolved facade instance.
*
* @param string $name
* @return void
*/
public static function clearResolvedInstance($name) {
unset(static::$resolvedInstance[$name]);
}
/**
* Clear all of the resolved instances.
*
* @return void
*/
public static function clearResolvedInstances() {
static::$resolvedInstance = [];
}
/**
* Get the container instance behind the facade.
*
* @return \Interop\Container\ContainerInterface
*/
public static function getFacadeContainer() {
return static::$container;
}
/**
* Set the container instance.
*
* @param \Interop\Container\ContainerInterface $container
* @return void
*/
public static function setFacadeContainer($container) {
static::$container = $container;
}
/**
* Handle dynamic, static calls to the object.
*
* @param string $method
* @param array $args
* @return mixed
*
* @throws \RuntimeException
*/
public static function __callStatic($method, $args) {
$instance = static::getFacadeRoot();
if (!$instance) {
throw new RuntimeException('A facade root has not been set.');
}
switch (count($args)) {
case 0:
return $instance->$method();
case 1:
return $instance->$method($args[0]);
case 2:
return $instance->$method($args[0], $args[1]);
case 3:
return $instance->$method($args[0], $args[1], $args[2]);
case 4:
return $instance->$method($args[0], $args[1], $args[2], $args[3]);
default:
return call_user_func_array([$instance, $method], $args);
}
}
}
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