ApiHook.php

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<?php

namespace ceLTIc\LTI\ApiHook;

trait ApiHook
{

    public static $USER_ID_HOOK = "UserId";

    public static $CONTEXT_ID_HOOK = "ContextId";

    public static $MEMBERSHIPS_SERVICE_HOOK = "Memberships";

    public static $OUTCOMES_SERVICE_HOOK = "Outcomes";

    public static $TOOL_SETTINGS_SERVICE_HOOK = "ToolSettings";

    private static $API_HOOKS = array();

    public static function registerApiHook($hookName, $familyCode, $className)
    {
        $objectClass = get_class();
        self::$API_HOOKS["{$objectClass}-{$hookName}-{$familyCode}"] = $className;
    }

    private static function getApiHook($hookName, $familyCode)
    {
        $class = self::class;
        return self::$API_HOOKS["{$class}-{$hookName}-{$familyCode}"];
    }

    private static function hasApiHook($hookName, $familyCode)
    {
        $class = self::class;
        return isset(self::$API_HOOKS["{$class}-{$hookName}-{$familyCode}"]);
    }

    private function hasService($serviceName, $endpointSettingNames)
    {
        $found = false;
        if (!is_array($endpointSettingNames)) {
            $found = !empty($this->getSetting($endpointSettingNames));
        } else {
            foreach ($endpointSettingNames as $endpointSettingName) {
                $found = $found || !empty($this->getSetting($endpointSettingName));
            }
        }
        return $found || self::hasApiHook($serviceName, $this->getConsumer()->getFamilyCode());
    }

}

?>