<?php

class App_Sitemap_Xml_View extends Qs_ViewController
{
    protected $_defaultConfig = array(
        'filter' => array('handler' => array('site'))
    );
    protected $_handlers = array();
    
    public function getConfig($field = false)
    {
        if (empty($this->_config)) {
            $config = Zend_Registry::get('config');
            if (isset($config->sitemapXml)) {
                $this->_config = $config->sitemapXml->toArray();
            } else {
                $this->_config = $this->_defaultConfig;
            }
        }
        return parent::getConfig($field);
    }
    
    public function getHandler($name)
    {
        if (!array_key_exists($name, $this->_handlers)) {
            $file = BASE_PATH . '/App/Doc/' . ucfirst($name) . '.php';
            if (file_exists($file)) {
                $class = 'App_Doc_' . ucfirst($name);
                $this->_handlers[$name] = new $class();
            } else {
                $this->_handlers[$name] = false;
            }
        }
        return $this->_handlers[$name];
    }
    
    public function exec()
    {
        $sitemap = Qs_SiteMap::getFromDb(array('full' => true, 'filter' => $this->getConfig('filter')));
        $xml = new App_Sitemap_Xml_Writer();
        $xml->start();
        $this->_writeXmlSitemap($xml, $sitemap);
        $xml->end();
        $xml->finish();
        $xml->output();
    }
    
    protected function _writeXmlSitemap($xml, $sitemap)
    {
        foreach ($sitemap as $page) {
            if (false === ($doc = $this->getHandler($page['handler']))) {
                Qs_Debug::log('Unknown page handler "' . $page['handler'] . '" for page "' . $page['fullAlias'] . '"');
                continue;
            }
            $doc->setOptions($page);
            $xml->writeUrl((('y' == $page['isSecure']) ? BASE_URL_HTTPS : BASE_URL_HTTP) . '/' . $page['fullAlias']);
            foreach ($page['items'] as $item) {
                $item['doc'] = $doc;
                if ($itemObject = Qs_SiteMap::createPageItemView($item)) {
                    if (method_exists($itemObject, 'writeXmlSitemap')) {
                        $itemObject->writeXmlSitemap($xml);
                    }
                    unset($itemObject);
                }
            }
            if ($page['final'] == 'n' && isset($page['sub']) && !empty($page['sub'])) {
                $this->_writeXmlSitemap($xml, $page['sub']);
            }
        }
    }
}