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✏️ Editing: ResourceLinkShareKey.php

<?php

namespace IMSGlobal\LTI\ToolProvider;

use IMSGlobal\LTI\ToolProvider\DataConnector\DataConnector;

/**
 * Class to represent a tool consumer resource link share key
 *
 * @author  Stephen P Vickers <svickers@imsglobal.org>
 * @copyright  IMS Global Learning Consortium Inc
 * @date  2016
 * @version 3.0.2
 * @license http://www.apache.org/licenses/LICENSE-2.0 Apache License, Version 2.0
 */
#[\AllowDynamicProperties]
class ResourceLinkShareKey
{

/**
 * Maximum permitted life for a share key value.
 */
    const MAX_SHARE_KEY_LIFE = 168;  // in hours (1 week)
/**
 * Default life for a share key value.
 */
    const DEFAULT_SHARE_KEY_LIFE = 24;  // in hours
/**
 * Minimum length for a share key value.
 */
    const MIN_SHARE_KEY_LENGTH = 5;
/**
 * Maximum length for a share key value.
 */
    const MAX_SHARE_KEY_LENGTH = 32;

/**
 * ID for resource link being shared.
 *
 * @var string $resourceLinkId
 */
    public $resourceLinkId = null;
/**
 * Length of share key.
 *
 * @var int $length
 */
    public $length = null;
/**
 * Life of share key.
 *
 * @var int $life
 */
    public $life = null;  // in hours
/**
 * Whether the sharing arrangement should be automatically approved when first used.
 *
 * @var boolean $autoApprove
 */
    public $autoApprove = false;
/**
 * Date/time when the share key expires.
 *
 * @var int $expires
 */
    public $expires = null;

/**
 * Share key value.
 *
 * @var string $id
 */
    private $id = null;
/**
 * Data connector.
 *
 * @var DataConnector $dataConnector
 */
    private $dataConnector = null;

/**
 * Class constructor.
 *
 * @param ResourceLink $resourceLink  Resource_Link object
 * @param string       $id      Value of share key (optional, default is null)
 */
    public function __construct($resourceLink, $id = null)
    {

$this->initialize();
        $this->dataConnector = $resourceLink->getDataConnector();
        $this->resourceLinkId = $resourceLink->getRecordId();
        $this->id = $id;
        if (!empty($id)) {
            $this->load();
        }

}

/**
 * Initialise the resource link share key.
 */
    public function initialize()
    {

$this->length = null;
        $this->life = null;
        $this->autoApprove = false;
        $this->expires = null;

}

/**
 * Initialise the resource link share key.
 *
 * Pseudonym for initialize().
 */
    public function initialise()
    {

$this->initialize();

}

/**
 * Save the resource link share key to the database.
 *
 * @return boolean True if the share key was successfully saved
 */
    public function save()
    {

if (empty($this->life)) {
            $this->life = self::DEFAULT_SHARE_KEY_LIFE;
        } else {
            $this->life = max(min($this->life, self::MAX_SHARE_KEY_LIFE), 0);
        }
        $this->expires = time() + ($this->life * 60 * 60);
        if (empty($this->id)) {
            if (empty($this->length) || !is_numeric($this->length)) {
                $this->length = self::MAX_SHARE_KEY_LENGTH;
            } else {
                $this->length = max(min($this->length, self::MAX_SHARE_KEY_LENGTH), self::MIN_SHARE_KEY_LENGTH);
            }
            $this->id = DataConnector::getRandomString($this->length);
        }

return $this->dataConnector->saveResourceLinkShareKey($this);

}

/**
 * Delete the resource link share key from the database.
 *
 * @return boolean True if the share key was successfully deleted
 */
    public function delete()
    {

return $this->dataConnector->deleteResourceLinkShareKey($this);

}

/**
 * Get share key value.
 *
 * @return string Share key value
 */
    public function getId()
    {

return $this->id;

}

###
###  PRIVATE METHOD
###

/**
 * Load the resource link share key from the database.
 */
    private function load()
    {

$this->initialize();
        $this->dataConnector->loadResourceLinkShareKey($this);
        if (!is_null($this->id)) {
            $this->length = strlen($this->id);
        }
        if (!is_null($this->expires)) {
            $this->life = ($this->expires - time()) / 60 / 60;
        }

}

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