<?php
namespace imagestore;

class Controller_Api_Playlists extends Controller_Api_ImageBase
{
    public function handle()
    {
        $playlists = (object) array(
            'games' => array(),
            'playlists' => array()
        );
        //-1 - link to playlists
        //-2 - ????
        //1 - featured
        //2 - trending now
        $id = 0;
        foreach ($this->groupByParent($this->getDirs()) as $dir => $arDirs) {
            $plnum = count($playlists->playlists);
            $playlists->playlists[$plnum] = (object) array(
                'id'    => ++$id,
                'image' => '',
                'name'  => $dir,
                'tiles' => array()
            );
            foreach ($arDirs as $dirInfo) {
                $uuid = str_replace(
                    '/', '-.-', $this->getRelPath($dirInfo->getPathname())
                );
                $playlists->games[] = (object) array(
                    'content_rating' => 'Everyone', 
                    'image'   => $this->getImageUrl($this->getFirstImage($dirInfo)),
                    'title'   => basename($dirInfo->getPathname()), 
                    'uuid'    =>  $uuid,
                    'version' => '11111111-0000-1111-0000-111111111111',
                    '__details' => $this->getDetailsUrl($uuid),
                );
                $playlists->playlists[$plnum]->tiles[] = (object) array(
                    'game' => $uuid
                );
            }
        }

        header('Content-Type: application/json');
        echo json_encode($playlists, JSON_PRETTY_PRINT);
    }

    protected function getDirs()
    {
        $dirs = new \GlobIterator($GLOBALS['imagestore']['basedir'] . '/*');
        $dirs2 = new \GlobIterator($GLOBALS['imagestore']['basedir'] . '/*/*');

        $all = new \AppendIterator();
        $all->append($dirs);
        $all->append($dirs2);

        $allDirs = new \CallbackFilterIterator(
            $all,
            function ($fileInfo) {
                return $fileInfo->isDir() && $this->hasImages($fileInfo);
            }
        );
        return new \CachingIterator($allDirs);
    }

    protected function hasImages(\SplFileInfo $dirInfo)
    {
        $it = $this->getImageIterator($dirInfo);
        $it->rewind();
        return $it->valid();
    }

    protected function groupByParent($dirs)
    {
        $arGroups = array();
        foreach ($dirs as $dirInfo) {
            $arGroups[basename($dirInfo->getPathInfo())][] = $dirInfo;
        }
        return $arGroups;
    }

    protected function getDetailsUrl($uuid)
    {
        return $this->getBaseUrl()
            . 'api/v1/apps/' . rawurlencode($uuid);
    }
}
?>