<?php
namespace imagestore;

class Controller_Api_ImageBase extends Controller_Base
{
    protected function getBaseUrl()
    {
        if (isset($_SERVER['HTTPS'])) {
        } else {
            $protocol = 'http';
        }
        return $protocol . '://' . $_SERVER['HTTP_HOST'] . '/';
    }

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

    protected function getImageIterator(\SplFileInfo $dirInfo)
    {
        $it = new \AppendIterator();
        $it->append(
            new \GlobIterator($dirInfo->getPathName() . '/*.jpg')
        );
        $it->append(
            new \GlobIterator($dirInfo->getPathName() . '/*.JPG')
        );
        return $it;
    }

    protected function getImageUrl($path)
    {
        return $this->getBaseUrl()
            . 'image?path=' . urlencode($this->getRelPath($path));
    }

    protected function getRelPath($path)
    {
        return substr($path, strlen($GLOBALS['imagestore']['basedir']));
    }
}
?>