<?php

/**
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; under version 2
 * of the License (non-upgradable).
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 *
 * Copyright (c) 2014 (original work) Open Assessment Technologies SA;
 *
 *
 */

namespace oat\tao\model\menu;

use oat\oatbox\PhpSerializable;
use oat\taoBackOffice\model\menuStructure\Action as iAction;
use oat\tao\helpers\ControllerHelper;
use oat\oatbox\service\ServiceManagerAwareTrait;
use oat\oatbox\service\ServiceManagerAwareInterface;

class Action implements PhpSerializable, iAction, ServiceManagerAwareInterface
{
    use ServiceManagerAwareTrait;

    const SERIAL_VERSION = 1392821334;

    /**
     * @param \SimpleXMLElement $node
     * @param $structureExtensionId extension of t structures.xml
     * @return static
     */
    public static function fromSimpleXMLElement(\SimpleXMLElement $node, $structureExtensionId)
    {
        $url = isset($node['url']) ? (string) $node['url'] : '#';
        if ($url == '#' || empty($url)) {
            $extension  = null;
            $controller = null;
            $action     = null;
        } else {
            list($extension, $controller, $action) = explode('/', trim($url, '/'));
        }
        $data = [
            'name'       => (string) $node['name'],
            'id'         => (string) $node['id'],
            'url'        => $url,
            'binding'    => isset($node['binding']) ? (string) $node['binding'] : (isset($node['js']) ? (string) $node['js'] : 'load'),
            'context'    => (string) $node['context'],
            'reload'     => isset($node['reload']) ? true : false,
            'disabled'   => isset($node['disabled']) ? true : false,
            'multiple'   => isset($node['multiple']) ? (trim(strtolower($node['multiple'])) == 'true')  : false,
            'group'      => isset($node['group']) ? (string) $node['group'] : self::GROUP_DEFAULT,
            'extension'  => $extension,
            'controller' => $controller,
            'action'     => $action
        ];

        if (isset($node->icon)) {
            $data['icon'] = Icon::fromSimpleXMLElement($node->icon, $structureExtensionId);
        }

        return new static($data);
    }

    public function __construct($data, $version = self::SERIAL_VERSION)
    {
        $this->data = $data;
        if (!isset($this->data['icon'])) {
            $this->data['icon'] = $this->inferLegacyIcon($data);
        }
    }

    public function getName()
    {
        return $this->data['name'];
    }

    public function getId()
    {
        return $this->data['id'];
    }

    public function getDisplay()
    {
        return $this->data['display'];
    }

    public function getUrl()
    {
        return _url($this->getAction(), $this->getController(), $this->getExtensionId());
    }

    public function getRelativeUrl()
    {
        return $this->data['url'];
    }

    public function getBinding()
    {
        return $this->data['binding'];
    }

    public function getContext()
    {
        return $this->data['context'];
    }

    public function getReload()
    {
        return $this->data['reload'];
    }

    public function getDisabled()
    {
        return $this->data['disabled'];
    }

    public function getGroup()
    {
        return $this->data['group'];
    }

    /**
     * @return Icon
     */
    public function getIcon()
    {
        return $this->data['icon'];
    }

    /**
     * Is the action available for multiple resources
     * @return bool
     */
    public function isMultiple()
    {
        return $this->data['multiple'];
    }

    /**
     * Get the extension id from the action's URL.
     *
     * @return string the extension id
     */
    public function getExtensionId()
    {
        return array_key_exists('extension', $this->data) ? $this->data['extension'] : null;
    }

    public function getController()
    {
        return array_key_exists('controller', $this->data) ? $this->data['controller'] : null;
    }

    public function getAction()
    {
        return array_key_exists('action', $this->data) ? $this->data['action'] : null;
    }

    /**
     * Try to get the action's icon the old way.
     * I/O impact (file_exists) is limited as the results can be serialized.
     *
     * @return Icon the icon with the src property set to the icon URL.
     */
    private function inferLegacyIcon()
    {
        $ext = $this->getExtensionId();
        $name = strtolower(\tao_helpers_Display::textCleaner($this->data['name']));
        $file = $ext . '/views/img/actions/' . $name . '.png';
        $src = 'actions/' . $name . '.png';
        if (file_exists(ROOT_PATH . $file)) {
            return Icon::fromArray(['src' => $src], $ext);
        } elseif (file_exists(ROOT_PATH . 'tao/views/img/actions/' . $name . '.png')) {
            return Icon::fromArray(['src' => $src], 'tao');
        } else {
            return Icon::fromArray(['src' => 'data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAAAAAA6fptVAAAAAnRSTlMA/1uRIrUAAAAKSURBVHjaY/gPAAEBAQAcsIyZAAAAAElFTkSuQmCC'], 'tao');
        }
    }

    /**
     *  Check whether the current is allowed to see this action (against ACL).
     *  @deprecated Wrong layer. Should be called at the level of the controller
     *  @return bool true if access is granted
     */
    public function hasAccess()
    {

        \common_Logger::w('Call to deprecated method ' . __METHOD__ . ' in ' . __CLASS__);

        $access = true;
        if (!empty($this->data['url'])) {
            $access = tao_models_classes_accessControl_AclProxy::hasAccess(
                $this->data['action'],
                $this->data['controller'],
                $this->data['extension']
            );
        }
        return $access;
    }

    public function getRequiredRights()
    {
        return $this->getServiceManager()->get(ActionService::SERVICE_ID)->getRequiredRights($this);
    }

    public function __toPhpCode()
    {
        return "new " . __CLASS__ . "("
            . \common_Utils::toPHPVariableString($this->data) . ','
            . \common_Utils::toPHPVariableString(self::SERIAL_VERSION)
        . ")";
    }
}