Form::loginCompletionAction

public function loginCompletionAction(string $type, $proxyId = null): AjaxJson
{
	$errorCollection = new ErrorCollection();
	if (!$service = $this->getService($proxyId))
	{
		$errorCollection[] = new Error("Service not available.");
		return AjaxJson::createError($errorCollection);
	}

	if (!$account = $service->getAccount($type))
	{
		$errorCollection[] = new Error("Unknown type: {$type}.");
		return AjaxJson::createError($errorCollection);
	}

	if (!($loginCompletionResult = $account->loginCompletion()) || !$loginCompletionResult->isSuccess())
	{
		$errorCollection[] = new Error("External server error.");
		return AjaxJson::createError($errorCollection);
	}

	return AjaxJson::createSuccess(
		[
			"data" => $loginCompletionResult->getData()
		]
	);
	
}