<?php
/**
 * @version		1.0.0
 * @category	Anahita Social Engine™
 * @copyright	Copyright (C) 2008 - 2010 rmdStudio Inc. and Peerglobe Technology Inc. All rights reserved.
 * @license		GNU GPLv2 <http://www.gnu.org/licenses/old-licenses/gpl-2.0.html>
 * @link     	http://www.anahitapolis.com
 */

class AnModelAvatarManager extends KObject
{		
	protected $_basePath;
			
	protected $_storage;	
	
	/**
	 * CONSTRUCTOR
	 * @param array of $options
	 * @return null
	 */
	public function __construct(array $options=array())
	{
		$options 			   = $this->_initialize($options);
		$this->_basePath	   = $options['avatar_base_path'];
		$this->_storage		   = $options['storage'];
	}
	
	/**
	 * method to initialize the class instance object
	 * @param array of options
	 * @return array of options
	 */
	protected function _initialize($options)
	{
		$default = array(
			'avatar_base_path'    => 'com_socialengine/avatars',
			'storage'  			  => KFactory::get('lib.anahita.util.storage')
		);
	
		return array_merge($default, $options);
	}
	
	/**
	 * Set the storage adapter 
	 * @param $storage AnUtilStorageAdapterAbstract Object
	 */
	public function setStorage(AnUtilStorageAdapterAbstract $storage)
	{
		$this->_storage = $storage;
	}
	
	/**
	 * Get the storage adapter 
	 * @return AnUtilStorageAdapterAbstract Object
	 */
	public function getStorage()
	{
		return $this->_storage;	
	}
	
	/**
	 * Set the basepath of the avatars
	 * @param string
	 */
	public function setBasePath($path='')
	{
		$this->_basePath = $path;
	}
	
	/**
	 * Get base url of the avatars
	 * @return 
	 */	
	public function getBaseURL()
	{
		$path = $this->_storage->getUrl($this->_basePath);
		return $path;
	}
	
	/**
	 * Remove the physical files associated with an avatar
	 * @return 
	 * @param $actor AnModelActor Object
	 */	
	public function deleteAvatar(AnModelActor $actor)
	{
		if ( !$actor->getAcl()->canUpdateAvatar() )
			return;
			
		if ( !$actor->avatar || $actor->avatar->isDefault() )
			return;
		
		foreach(AnModelAvatar::getSizes() as $size=>$dimension) {
			$filename = $size.$actor->avatar->getName();
			$path  	  = $this->_basePath.'/'.$filename;
			$this->_storage->delete($path);
		}

		$actor->avatar = AnModelAvatar::getDefaultAvatar();		
	}
	
	/**
	 * Resize and store image as an avatar for an actor
	 * @return 
	 * @param $actor AnModelActor Object
	 * @param $data  AnUtilData Object
	 */
	public function setAvatar(AnModelActor $actor,AnUtilData $data)
	{
		jimport('joomla.filesystem.file');
		
		if ( !$actor->getAcl()->canUpdateAvatar() )
			return;

		$firstime  = false;
		
		if ( is_null($actor->avatar) || $actor->avatar->isDefault()  ) {
			$thumbnail = md5($actor->id).'.jpg';
			$firstime  = true;
		} else	
			$thumbnail = $actor->avatar->getName();
		
		$format 	   = JFile::getExt($thumbnail);
		$image	   	   = imagecreatefromstring($data);

		foreach(AnModelAvatar::getSizes() as $size=>$dimension) {
			$aData    = AnUtilImage::resize($image, $dimension, array('format'=>$format));
			$filename = $size.$thumbnail;
			$path  	  = $this->_basePath.'/'.$filename;
			$this->_storage->write($path, $aData);
		}
		
		if ( $firstime ) {
			$avatar  = new AnModelAvatar(array('name' => $thumbnail,'base' => $this->getBaseURL()));			
			$actor->avatar = $avatar;
		}
		
		return true;
	}
	
//end class	
}