<?php
/***************************************************************************
 * Smarty Zend View Wrapper
 * see http://www.jurajsplayground.com/blog/2010/04/04/...
 * ...zend-framework-smarty-with-zend-view-helpers/ for more information, too
 ***************************************************************************/

require_once "Zend/View/Abstract.php";
require_once "Zend/View/Interface.php";
require_once 'Smarty/Smarty.class.php';

/*
 * Extend Zend_View_Abstract with Smarty
 */
class Newscoop_SmartyView 
	extends Zend_View_Abstract 
		 implements Zend_View_Interface
{
	/**
	 * @var Smarty
	 */
	protected $_smarty;

	/**
	 * Constructor
	 *
	 * @param array $config
	 * @return void
	 */
	public function __construct($config = array()) {
		
		$this->_smarty = new Smarty();
		
		if (!isset($config['compile_dir'])) {
			throw new Newscoop_Exception('compile_dir must be set in $config for ' . get_class($this));
		} else {
			$this->_smarty->compile_dir = $config['compile_dir'];
		}
		if (isset($config['config_dir'])) {
			$this->_smarty->config_dir = $config['config_dir'];
		}
		
		parent::__construct($config);
		
	}
	
	/**
	 * Registers additional modifiers
	 * 
	 * @return void
	 */
	protected function _registerModifiers() {
		$this->_smarty->register_modifier('num', 'number_format');
	}

	/**
	 * Return the template engine object
	 *
	 * @return Smarty
	 */
	public function getEngine() {
		return $this->_smarty;
	}

	/**
	 * Set the path to the templates
	 *
	 * @param string $path The directory to set as the path.
	 * @return void
	 */
	public function setScriptPathBck($path) {
		if (is_readable($path)) {
			$this->_smarty->template_dir = $path;
				return $this;
		}
		//throw new Newscoop_Exception('Invalid path provided');
	}
	
	/**
	 * Retrieve the current template directory
	 *
	 * @return string
	 */
	public function getScriptPathsBck() {
		return array($this->_smarty->template_dir);
	}
	
	/**
	 * Alias for setScriptPath
	 *
	 * @param string $path
	 * @param string $prefix Unused
	 * @return void
	 */
	public function setBasePathBck($path, $prefix = 'Zend_View') {
		return $this->setScriptPath($path);
	}

	/**
	 * Alias for setScriptPath
	 *
	 * @param string $path
	 * @param string $prefix Unused
	 * @return void
	 */
	public function addBasePathBck($path, $prefix = 'Zend_View') {
		return $this->setScriptPath($path);
	}


	/**
	 * Smarty assign method (->)
	 *
	 * @param string $key
	 * @param mixed $val
	 * @return void
	 */
	public function __set($key, $val) {
		$this->_smarty->assign($key, $val);
	}

	/**
	 * Smarty get method
	 *
	 * @param string $key der Variablenname.
	 * @return mixed der Variablenwert.
	 */
	public function __get($key) {
		return $this->_smarty->getTemplateVars($key);
	}

	/**
	 * Erlaubt das Testen von empty() und isset()
	 *
	 * @param string $key
	 * @return boolean
	 */
	public function __isset($key) {
		$var = $this->_smarty->getTemplateVars($key);
		if ($var) {
        	return true;
		}
        return false;
	}

	/**
	 * unset method - clear assign
	 *
	 * @param string $key
	 */
	public function __unset($key) {
        $this->_smarty->clear_assign($key);
    }
	
	/**
	 * Smarty assign method
	 *
	 *
	 * @see __set()
	 * @param string|array $spec
	 * @param mixed $value (Optional) Wenn ein Variablenname verwendet wurde, verwende dies als den Wert.
	 * @return void
	 */
	public function assign($spec, $value = null) {
		if (is_array($spec))
			$this->_smarty->assign($spec);
		else
			$this->_smarty->assign($spec, $value);
	}
	
	/**
	 * clearVars method - clear all assigns
	 *
	 */
	public function clearVars() {
		$this->_smarty->clear_all_assign();
	}
	

	
	/**
	 * Smarty render method
	 *
	 * @param string $name Das zu verarbeitende Template
	 * @param string $cacheId [optional]
	 * @param string $compileId [optional]
	 * @return string Die Ausgabe.
	 */
	public function render($name, $cacheId = null, $compileId = null) {
		
		$templateDirs = $this->getScriptPaths();
		foreach ($templateDirs as $td) {
			if (is_file($td.$name)) {
				$this->_smarty->template_dir = $td;
				$search = array('/scripts/admin/', '/scripts/');
				$replace = array('', '');
				$module = array_reverse(explode('/', str_replace($search, $replace, $td)));
				$compileId = $module[0].'_'.$module[1].'_'.$name;
				return $this->_smarty->fetch($name, $cacheId, $compileId);
			}	
		}
		try {
			$this->_smarty->compile_id = $name;
			$fetch = $this->_smarty->fetch($name);
			return $fetch;
		} catch (Exception $e) {
			throw new Zend_Exception('View Template not found!');	
		}
		
	}
	
	/**
	 * Enables Smarty caching
	 *
	 * @param integer $lifeTime in seconds
	 * @param bool $global whether $lifeTime applies to all files
	 * @return Jazz_View_Smarty
	 */
	public function enableCaching($lifeTime = 300, $global = true) {
		$this->_smarty->caching = $global === true ? 1 : 2;
		$this->_smarty->cache_lifetime = $lifeTime;
		return $this;
	}

	/**
	 * Disables Smarty caching
	 *
	 * @return Jazz_View_Smarty
	 */
	public function disableCaching() {
		$this->_smarty->caching = 0;
		return $this;
	}

	/**
	 * Finds out if template is cached
	 *
	 * @param string $template Path to the template
	 * @return boolean
	 */
	public function isCached($template, $cacheId = null, $compileId = null) {
		return $this->_smarty->is_cached($template, $cacheId, $compileId);
	}
	
	/**
	 * Smarty run method
	 */
	public function _run() {}
	
	
}