<?php

/**
 * Check to see if the currently accessed version is out of date or perhaps a 
 * future version rather than the stable edition.
 *
 * @return false|ArrayData
 */

class DocumentationViewerVersionWarning extends Extension
{
    public function VersionWarning()
    {
        $page = $this->owner->getPage();

        if (!$page) {
            return false;
        }
        
        $entity = $page->getEntity();

        if (!$entity) {
            return false;
        }

        $versions = $this->owner->getManifest()->getAllVersionsOfEntity($entity);

        if ($entity->getIsStable()) {
            return false;
        }

        $stable = $this->owner->getManifest()->getStableVersion($entity);
        $compare = $entity->compare($stable);

        if ($entity->getVersion() == "master" || $compare > 0) {
            return $this->owner->customise(new ArrayData(array(
                'FutureRelease' => true,
                'StableVersion' => DBField::create_field('HTMLText', $stable->getVersion())
            )));
        } else {
            return $this->owner->customise(new ArrayData(array(
                'OutdatedRelease' => true,
                'StableVersion' => DBField::create_field('HTMLText', $stable->getVersion())
            )));
        }
    
        return false;
    }
}