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<?php
namespace Studip\LTI13a;
use OAT\Library\Lti1p3Core\Exception\LtiException;
use OAT\Library\Lti1p3Core\Registration\RegistrationInterface;
use OAT\Library\Lti1p3Core\Tool\ToolInterface;
use OAT\Library\Lti1p3Core\Platform\PlatformInterface;
use OAT\Library\Lti1p3Core\Security\Key\KeyChainInterface;
class Registration implements RegistrationInterface
{
/**
* @var \LtiTool|null The LTI tool for the registration instance.
*/
protected ?\LtiTool $tool = null;
/**
* @var \LtiPlatform|null The LTI platform for the registration instance.
*/
protected ?\LtiPlatform $platform = null;
public function __construct(
\LtiTool|\LtiPlatform|null $item,
protected ?\LtiResourceLink $link = null
) {
if ($item instanceof \LtiTool) {
$this->tool = $item;
}
if ($item instanceof \LtiPlatform) {
$this->platform = $item;
}
}
public function setLtiTool(\LtiTool $tool)
{
$this->tool = $tool;
}
public function getLtiTool() : ?\LtiTool
{
return $this->tool;
}
public function setLtiPlatform(\LtiPlatform $platform)
{
$this->platform = $platform;
}
public function getLtiPlatform() : ?\LtiPlatform
{
return $this->platform;
}
public function setLtiResourceLink(\LtiResourceLink $link)
{
$this->link = $link;
}
public function getLtiResourceLink() : ?\LtiResourceLink
{
return $this->link;
}
#[\Override]
public function getIdentifier(): string
{
if ($this->tool) {
return $this->tool->id;
}
if ($this->platform) {
return $this->platform->id;
}
if ($this->link) {
return $this->tool->id . '_' . $this->link->id;
}
return '';
}
#[\Override]
public function getClientId(): string
{
return $this->getIdentifier();
}
#[\Override]
public function getPlatform(): PlatformInterface
{
return PlatformManager::getPlatformConfiguration();
// if ($this->platform) {
// return $this->platform->getPlatformData();
// } elseif ($this->tool) {
// //Use the global platform configuration for Stud.IP as LTI platform.
// return PlatformManager::getPlatformConfiguration();
// }
// //If no platform or tool is present, the registration is not linked to a platform.
// throw new \Studip\LTIException(
// 'No LTI platform present.',
// \Studip\LTIException::REGISTRATION_NOT_LINKED_TO_PLATFORM
// );
}
#[\Override]
public function getTool(): ToolInterface
{
if ($this->tool) {
return $this->tool->getToolData();
} elseif ($this->platform) {
//Return the global tool:
return \LtiTool::getGlobalTool();
}
//If no tool or platform is present, the registration is not linked to a tool.
throw new \Studip\LTIException(
'No LTI tool link present.',
\Studip\LTIException::REGISTRATION_NOT_LINKED_TO_TOOL
);
}
#[\Override]
public function getDeploymentIds(): array
{
if ($this->tool) {
return \DBManager::get()->fetchFirst("SELECT `id` FROM `lti_deployments` WHERE `tool_id` = ?", [$this->tool->id]);
}
if ($this->link) {
return [$this->link->deployment_id];
}
return [];
}
#[\Override]
public function hasDeploymentId(string $deploymentId): bool
{
if ($this->tool) {
return \LtiDeployment::countBySql(
"`tool_id` = :tool_id AND `id` = :deployment_id",
['tool_id' => $this->tool->id, 'deployment_id' => $deploymentId]
) > 0;
}
if ($this->link) {
return $this->link->deployment_id == $deploymentId;
}
return false;
}
#[\Override]
public function getDefaultDeploymentId(): ?string
{
//There is no default deployment-ID in Stud.IP:
return null;
}
#[\Override]
public function getPlatformKeyChain(): ?KeyChainInterface
{
if ($this->platform) {
//TODO: return the platform keyring.
} elseif ($this->tool) {
$platform_keyring = PlatformManager::getPlatformKeyring();
if (!$platform_keyring) {
$platform_keyring = PlatformManager::generatePlatformKeyring();
}
return $platform_keyring->toKeyChain();
}
return null;
}
#[\Override]
public function getToolKeyChain(): ?KeyChainInterface
{
if ($this->tool) {
if ($this->tool->jwks_url) {
return null;
}
$keyring = $this->tool->getKeyring();
if (!$keyring) {
throw new LtiException('Failed to load public key for tool ' . $this->tool->id);
}
return $keyring->toKeyChain();
} elseif ($this->platform) {
//Return the global tool keychain.
$keyring = \LtiTool::getGlobalToolKeyring(true);
if ($keyring) {
return $keyring->toKeyChain();
}
}
return null;
}
#[\Override]
public function getPlatformJwksUrl(): ?string
{
if ($this->platform) {
return $this->platform->jwks_url ?? null;
} else {
return PlatformManager::getJwksUrl();
}
}
#[\Override]
public function getToolJwksUrl(): ?string
{
if ($this->tool) {
return $this->tool->jwks_url ?? null;
} else {
//Return the global JWKS URL for Stud.IP as LTI tool.
return \LtiTool::getGlobalJwksUrl();
}
}
}
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