rbnvrw/crispus

<?php
namespace Crispus;

/**
 * Crispus CMS
 *
 * @author Ruben Verweij
 * @link http://rubenverweij.nl
 * @license http://opensource.org/licenses/MIT
 * @version 0.1
 */
class Theme {

    public $_oConfig;
    private $sConfigFile;
    private $sTheme;
    
    private $aPageConfig;
    private $sTemplate;
    private $sDefaultTemplate = 'index';
    private $aBlocks;
    private $aAssets;
    private $aPageList;
    private $aChildren;
    
    private $sUrl;
    
    private $aRenderedBlocks;
    private $aRenderedAssets;
    
    private $aDefaultTwigSettings;

    public function __construct($sTheme, $sConfigFile = 'config.json')
    {
        $this->sTheme = $sTheme;
        
        $this->sConfigFile = $sConfigFile;
        $this->_oConfig = new SiteConfig($this->sConfigFile);
    }
    
    public function renderPage() {
        // Render all blocks
        $this->renderBlocks();
        
        // Prepare the assets
        $this->renderAssets();
    
        // Render page using Twig
        return $this->runTwig();
    }
    
    public function setPageConfig($aConfig) {
        if(is_array($aConfig)){
            if(is_array($aConfig)){
                $this->aPageConfig = array_change_key_case($aConfig, CASE_LOWER);
            }else{
                $this->aPageConfig = array();
            }
        }
        
        if(isset($this->aPageConfig['template'])){
            $this->setTemplate($this->aPageConfig['template']);
        }else{
            $this->setTemplate($this->sDefaultTemplate);
        }
    }
    
    public function addBlocks($aBlocks) {
        $this->aBlocks = $aBlocks;
    }
    
    public function addAssets($aAssets) {
        $this->aAssets = $aAssets;
    }
    
    public function setSitemapInfo($sUrl, $aPageList, $aChildren) {
        $this->aPageList = $aPageList;
        $this->aChildren = $aChildren;
        $this->sUrl = $sUrl;
    }
    
    private function setTemplate($sTemplate) {
        $this->sTemplate = $sTemplate;
        
        if(empty($this->sTemplate)){
            $this->sTemplate = $this->sDefaultTemplate;    
        }
    }
    
    private function renderBlocks(){
        $this->aRenderedBlocks = array();
        
        foreach($this->aBlocks as $sBlock){
            // New block object
            $oBlock = new Block($sBlock, $this->aPageConfig, $this->sConfigFile);
            $this->aRenderedBlocks[$oBlock->getName()] = $oBlock->render();
        }
    }
    
    private function renderAssets(){
        $oAssetManager = new AssetManager($this->sConfigFile);
        $oAssetManager->addAssets($this->aAssets);
        $this->aRenderedAssets = $oAssetManager->getAssetPaths();
    }

    private function runTwig(){
        // Pass it through Twig (load the theme)
        \Twig_Autoloader::register();
        
        // Add blocks
        if(empty($this->aRenderedBlocks)){
            $this->renderBlocks();
        }
        
        // Add assets
        if(empty($this->aRenderedAssets)){
            $this->renderAssets();
        }
        
        // Add twig variables
        $aVars = array(
            'assets' => $this->aRenderedAssets,
            'blocks' => $this->aRenderedBlocks,
            'children' => $this->aChildren,
            'page' => $this->aPageConfig,
            'pages' => $this->aPageList,
            'site' => $this->_oConfig->get('site'),
            'url' => $this->sUrl,
            'phpThumb' => $this->_oConfig->getPhpThumbUrl()
        );
        
        $sThemePath = $this->_oConfig->getPath('themes').'/' . $this->sTheme . '/';
        
        $oLoader = new \Twig_Loader_Filesystem($sThemePath);        
        
        $oTwig = new \Twig_Environment($oLoader, $this->getTwigConfig($this->_oConfig->get('twig')));
        
        if($this->_oConfig->get('twig', 'debug') === true){
            $oTwig->addExtension(new \Twig_Extension_Debug());
        }
        
        return $oTwig->render($this->sTemplate.'.html', $aVars);
    }
    
    private function getTwigConfig($aSettings){
        $this->aDefaultTwigSettings = (!is_array($this->aDefaultTwigSettings)) ? array() : $this->aDefaultTwigSettings;
        $aSettings = !(is_array($aSettings)) ? array() : $aSettings;
        
        $this->aDefaultTwigSettings['cache'] = $this->_oConfig->getPath('cache');

        return array_replace_recursive($this->aDefaultTwigSettings, $aSettings);    
    }

}