<?php
/**
 * Datasource Sitemap: VFS
 *
 * $Id$
 *
 * @author gERD Schaufelberger <gerd@php-tools.net>
 * @license PHP License
 * @package WB
 * @subpackage datasource
 */

WBClass::load('WBDatasource_Sitemap'
        );

/**
 * Datasource Sitemap VFS
 *
 * Add recent VFS files to sitemap
 *
 * @version 1.0.1
 * @package WB
 * @subpackage datasource
 */
class WBDatasource_Sitemap_VFS extends WBDatasource_Sitemap
{
    /**
     * VFS config
     * @var WBConfig
     */
    private $conf;

    /**
     * table access
     * @var WBDatasource_Table
     */
    private $table;

    /**
     * Find all the URLs
     *
     * Get recent blog posts
     */
    public function find()
    {
        // configure
        $this->conf =   WBClass::create('WBConfig');
        $this->conf->load('vfs');

        $pathFormat =   $this->conf->get('sitemap/vfs/path', 'media/%obscureid/%name');
        $priority   =   floatval($this->conf->get('sitemap/vfs/priority', 0.7));
        $limit      =   intval($this->conf->get('sitemap/vfs/limit', 500));
        $mimemajor  =   $this->conf->get('sitemap/vfs/mimemajor', array('image', 'video'));

        $this->table    =   WBClass::create('WBDatasource_Table');

        $list   =   $this->getIds($limit, $mimemajor);
        $search =   array(
                        '%obscureid',
                        '%name'
                    );

        $file   =   WBClass::create('WBVFS_File');
        /** @var $file WBVFS_File */

        $this->setPriority($priority);
        foreach ($list as $l) {
            $file   =   $file->loadById($l);
            if (!$file->isOK()) {
                continue;
            }

            /**
             * @todo check for file references?
             */

            $major  =   $file->getMime(WBVFS_File::MIME_MAJOR);

            // add vfs file view page
            $replace    =   array(
                                $file->getObscureId(),
                                urlencode($file->getName())
                            );

            $path   =   str_replace($search, $replace, $pathFormat);
            $snip   =   array();
            $snip[] =   sprintf('  <%s:%1$s>', $major);
            $snip[] =   sprintf('    <%s:title><![CDATA[%s]]></%1$s:title>', $major, $file->getName());

            switch ($major) {
                case 'image':
                    $snip[] =   sprintf('    <%s:loc>[[PROTOCOL]]://[[SERVER]][[SERVICE_FILE]]%s</%1$s:loc>', $major, $file->getUri());
                    $snip[] =   sprintf('    <%s:caption><![CDATA[%s]]></%1$s:caption>', $major, $file->getDescription());
                    break;

                case 'video':
                    $created    =   strtotime($file->getCreated());
                    $snip[] =   sprintf('    <%s:publication_date>%s</%1$s:publication_date>', $major, strftime('%Y-%m-%dT%H:%M:%S+00:00', $created));
                    $snip[] =   sprintf('    <%s:content_loc>[[PROTOCOL]]://[[SERVER]][[SERVICE_FILE]]%s</%1$s:content_loc>', $major, $file->getUri());
                    $snip[] =   sprintf('    <%s:thumbnail_loc>[[PROTOCOL]]://[[SERVER]][[SERVICE_FILE]]%s</%1$s:thumbnail_loc>', $major, $file->getUri('image'));
                    $snip[] =   sprintf('    <%s:description><![CDATA[%s]]></%1$s:description>', $major, $file->getDescription());
                    $snip[] =   sprintf('    <%s:duration>%d</%1$s:duration>', $major, round($file->getInfo('seconds')));
                    $snip[] =   sprintf('    <%s:view_count>%d</%1$s:view_count>', $major, $file->getViews());
                    break;

                default:
                    continue 2;
                    break;
            }
            $snip[] =   sprintf('  </%s:%1$s>', $major);

            $this->setPath($path, implode("\n", $snip));
            $this->notify();
        }
        WBDatasource_Table::flushCache();

    }

    /**
     * Get ids of recent media files
     *
     * Order by created (desc) and select all media files that have a description.
     * If list of major mimetypes is given, use it as filter
     *
     * @param int $limit
     * @param array $mimemajor
     * @return array
     */
    private function getIds($limit, $mimemajor = array())
    {
        // get list
        $opt    =   array(
                        'limit'     =>  $limit,
                        'order'     =>  array(
                                            'field' =>  'created',
                                            'asc'   =>  0
                                        )
                        );
        $clause     =   array();

        // description is required
        $clause[]   =   array(
                            'field'     =>  'description',
                            'relation'  =>  'not',
                            'value'     =>  ''
                        );
        // just a view mime-types
        if (!empty($mimemajor)) {
            $clause[]   =   array(
                                    'field'     =>  'mimemajor',
                                    'relation'  =>  'IN',
                                    'value'     =>  $mimemajor
                                );
        }
        return $this->table->getIds('vfsfile', null, $clause, $opt);
    }

}