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<?php
namespace JsonApi\Routes\Courseware;
use JsonApi\Errors\AuthorizationFailedException;
use JsonApi\Errors\UnprocessableEntityException;
use JsonApi\JsonApiController;
use JsonApi\Routes\ValidationTrait;
use JsonApi\Schemas\Courseware\Container as ContainerSchema;
use JsonApi\Schemas\Courseware\StructuralElement as StructuralElementSchema;
use Psr\Http\Message\ResponseInterface as Response;
use Psr\Http\Message\ServerRequestInterface as Request;
/**
* Create a container.
*/
class ContainersCreate extends JsonApiController
{
use ValidationTrait;
const REL_STRUCTURAL_ELEMENT = 'data.relationships.structural-element';
/**
* @SuppressWarnings(PHPMD.UnusedFormalParameter)
*/
public function __invoke(Request $request, Response $response, $args)
{
$json = $this->validate($request);
$structElem = $this->getStructElemFromJson($json);
if (!Authority::canCreateContainer($user = $this->getUser($request), $structElem)) {
throw new AuthorizationFailedException();
}
$container = $this->createContainer($user, $json, $structElem);
return $this->getCreatedResponse($container);
}
/**
* @SuppressWarnings(PHPMD.UnusedFormalParameters)
*/
protected function validateResourceDocument($json, $data)
{
if (!self::arrayHas($json, 'data')) {
return 'Missing `data` member at document“s top level.';
}
if (ContainerSchema::TYPE !== self::arrayGet($json, 'data.type')) {
return 'Wrong `type` member of document“s `data`.';
}
if (self::arrayHas($json, 'data.id')) {
return 'New document must not have an `id`.';
}
if (!self::arrayHas($json, 'data.attributes.container-type')) {
return 'Missing `container-type` attribute.';
}
$containerType = self::arrayGet($json, 'data.attributes.container-type');
if (!$this->validateContainerType($containerType)) {
return 'Invalid `container-type` attribute.';
}
if (!self::arrayHas($json, self::REL_STRUCTURAL_ELEMENT)) {
return 'Missing `structural-element` relationship.';
}
if (!$this->getStructElemFromJson($json)) {
return 'Invalid `structural-element` relationship.';
}
}
private function validateContainerType(string $containerType)
{
return \Courseware\ContainerTypes\ContainerType::isContainerType($containerType);
}
private function getStructElemFromJson($json)
{
if (!$this->validateResourceObject($json, self::REL_STRUCTURAL_ELEMENT, StructuralElementSchema::TYPE)) {
return null;
}
$structElemId = self::arrayGet($json, self::REL_STRUCTURAL_ELEMENT . '.data.id');
return \Courseware\StructuralElement::find($structElemId);
}
private function createContainer(\User $user, array $json, \Courseware\StructuralElement $structElem)
{
$get = function ($key, $default = '') use ($json) {
return self::arrayGet($json, $key, $default);
};
$container = \Courseware\Container::build([
'structural_element_id' => $structElem->id,
'owner_id' => $user->id,
'editor_id' => $user->id,
'edit_blocker_id' => '',
'position' => $structElem->countContainers(),
'container_type' => $get('data.attributes.container-type'),
'payload' => '',
]);
$payload = $get('data.attributes.payload');
if ($payload) {
if (!$container->type->validatePayload((object) $payload)) {
throw new UnprocessableEntityException('Invalid payload for this `container-type`.');
}
$container->type->setPayload($payload);
}
$container->store();
return $container;
}
}
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