User.php

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<?php
 
namespace IMSGlobal\LTI\ToolProvider;
use IMSGlobal\LTI\ToolProvider\DataConnector\DataConnector;
 
class User
{
 
    public $firstname = '';
    public $lastname = '';
    public $fullname = '';
    public $email = '';
    public $image = '';
    public $roles = array();
    public $groups = array();
    public $ltiResultSourcedId = null;
    public $created = null;
    public $updated = null;
 
    private $resourceLink = null;
    private $resourceLinkId = null;
    private $id = null;
    public $ltiUserId = null;
    private $dataConnector = null;
 
    public function __construct()
    {
 
        $this->initialize();
 
    }
 
    public function initialize()
    {
 
        $this->firstname = '';
        $this->lastname = '';
        $this->fullname = '';
        $this->email = '';
        $this->image = '';
        $this->roles = array();
        $this->groups = array();
        $this->ltiResultSourcedId = null;
        $this->created = null;
        $this->updated = null;
 
    }
 
    public function initialise()
    {
 
        $this->initialize();
 
    }
 
    public function save()
    {
 
        if (!empty($this->ltiResultSourcedId) && !is_null($this->resourceLinkId)) {
            $ok = $this->getDataConnector()->saveUser($this);
        } else {
            $ok = true;
        }
 
        return $ok;
 
    }
 
    public function delete()
    {
 
        $ok = $this->getDataConnector()->deleteUser($this);
 
        return $ok;
 
    }
 
    public function getResourceLink()
    {
 
        if (is_null($this->resourceLink) && !is_null($this->resourceLinkId)) {
            $this->resourceLink = ResourceLink::fromRecordId($this->resourceLinkId, $this->getDataConnector());
        }
 
        return $this->resourceLink;
 
    }
 
    public function getRecordId()
    {
 
        return $this->id;
 
    }
 
    public function setRecordId($id)
    {
 
        $this->id = $id;
 
    }
 
    public function setResourceLinkId($resourceLinkId)
    {
 
        $this->resourceLinkId = $resourceLinkId;
 
    }
 
    public function getDataConnector()
    {
 
        return $this->dataConnector;
 
    }
 
    public function getId($idScope = null)
    {
 
        if (empty($idScope)) {
            if (!is_null($this->resourceLink)) {
                $idScope = $this->resourceLink->getConsumer()->idScope;
            } else {
                $idScope = ToolProvider::ID_SCOPE_ID_ONLY;
            }
        }
        switch ($idScope) {
            case ToolProvider::ID_SCOPE_GLOBAL:
                $id = $this->getResourceLink()->getKey() . ToolProvider::ID_SCOPE_SEPARATOR . $this->ltiUserId;
                break;
            case ToolProvider::ID_SCOPE_CONTEXT:
                $id = $this->getResourceLink()->getKey();
                if ($this->resourceLink->ltiContextId) {
                    $id .= ToolProvider::ID_SCOPE_SEPARATOR . $this->resourceLink->ltiContextId;
                }
                $id .= ToolProvider::ID_SCOPE_SEPARATOR . $this->ltiUserId;
                break;
            case ToolProvider::ID_SCOPE_RESOURCE:
                $id = $this->getResourceLink()->getKey();
                if ($this->resourceLink->ltiResourceLinkId) {
                    $id .= ToolProvider::ID_SCOPE_SEPARATOR . $this->resourceLink->ltiResourceLinkId;
                }
                $id .= ToolProvider::ID_SCOPE_SEPARATOR . $this->ltiUserId;
                break;
            default:
                $id = $this->ltiUserId;
                break;
        }
 
        return $id;
 
    }
 
    public function setNames($firstname, $lastname, $fullname)
    {
 
        $names = array(0 => '', 1 => '');
        if (!empty($fullname)) {
            $this->fullname = trim($fullname);
            $names = preg_split("/[\s]+/", $this->fullname, 2);
        }
        if (!empty($firstname)) {
            $this->firstname = trim($firstname);
            $names[0] = $this->firstname;
        } else if (!empty($names[0])) {
            $this->firstname = $names[0];
        } else {
            $this->firstname = 'User';
        }
        if (!empty($lastname)) {
            $this->lastname = trim($lastname);
            $names[1] = $this->lastname;
        } else if (!empty($names[1])) {
            $this->lastname = $names[1];
        } else {
            $this->lastname = $this->ltiUserId;
        }
        if (empty($this->fullname)) {
            $this->fullname = "{$this->firstname} {$this->lastname}";
        }
 
    }
 
    public function setEmail($email, $defaultEmail = null)
    {
 
      if (!empty($email)) {
          $this->email = $email;
      } else if (!empty($defaultEmail)) {
          $this->email = $defaultEmail;
          if (substr($this->email, 0, 1) === '@') {
              $this->email = $this->getId() . $this->email;
          }
      } else {
          $this->email = '';
      }
 
    }
 
    public function isAdmin()
    {
 
        return $this->hasRole('Administrator') || $this->hasRole('urn:lti:sysrole:ims/lis/SysAdmin') ||
               $this->hasRole('urn:lti:sysrole:ims/lis/Administrator') || $this->hasRole('urn:lti:instrole:ims/lis/Administrator');
 
    }
 
    public function isStaff()
    {
 
        return ($this->hasRole('Instructor') || $this->hasRole('ContentDeveloper') || $this->hasRole('TeachingAssistant'));
 
    }
 
    public function isLearner()
    {
 
        return $this->hasRole('Learner');
 
    }
 
    public static function fromRecordId($id, $dataConnector)
    {
 
        $user = new User();
        $user->dataConnector = $dataConnector;
        $user->load($id);
 
        return $user;
 
    }
 
    public static function fromResourceLink($resourceLink, $ltiUserId)
    {
 
        $user = new User();
        $user->resourceLink = $resourceLink;
        if (!is_null($resourceLink)) {
            $user->resourceLinkId = $resourceLink->getRecordId();
            $user->dataConnector = $resourceLink->getDataConnector();
        }
        $user->ltiUserId = $ltiUserId;
        if (!empty($ltiUserId)) {
            $user->load();
        }
 
        return $user;
 
    }
 
###
###  PRIVATE METHODS
###
 
    private function hasRole($role) {
 
        if (substr($role, 0, 4) !== 'urn:')
        {
            $role = 'urn:lti:role:ims/lis/' . $role;
        }
 
        return in_array($role, $this->roles);
 
    }
 
    private function load($id = null)
    {
 
        $this->initialize();
        $this->id = $id;
        $dataConnector = $this->getDataConnector();
        if (!is_null($dataConnector)) {
            return $dataConnector->loadUser($this);
        }
 
        return false;
    }
 
}