/**
* Retrieve an instance of service from container
*
* @param string $key
* @param array ...$args
* @return mixed
* @throws ContainerException
* @throws Exception\RepositoryException
*/
public function get(string $key, ...$args)
{
// Check if service exists
if (!$this->has($key)) {
throw ContainerException::serviceNotFound(__METHOD__, $key);
}
// Check if its in Repository
if ($this->repo->has($key)) {
// Pull instance from repository
return $this->repo->pull($key);
} else {
// Get new instance of service class
$service = $this->services[$key];
return $service->createInstance($this, $args);
}
}
/**
* Creates new instance of service
*
* @param Container $container
* @param array $args
* @return mixed
* @throws ContainerException
*/
public function createInstance(Container $container, array $args)
{
// Prepare arguments for constructor
$constructorArgs = [];
foreach ($this->args as $arg) {
$constructorArgs[] = $container->get($arg);
}
// Merge arguments
foreach ($args as $arg) {
array_push($constructorArgs, $arg);
}
// Construct
$class = $this->className;
/** @var $instance object */
$instance = new $class(...$constructorArgs);
// Call setter methods
foreach ($this->methods as $method => $di) {
if (!is_callable([$instance, $method])) {
// Setter method doesn't exist or isn't publicly callable
throw ContainerException::injectMethodNotFound(__METHOD__, $class, $method, $di);
}
// Call method, inject dependency
call_user_func_array([$instance, $method], [$container->get($di)]);
}
// Inject public properties
$publicProperties = get_object_vars($instance);
foreach ($this->properties as $property => $di) {
// Check if property is public
if (!in_array($property, $publicProperties)) {
throw ContainerException::injectPropertyNotFound(__METHOD__, $class, $property, $di);
}
// Inject public property
$instance->{$property} = $container->get($di);
}
// Return created instance
return $instance;
}
