<?php
/**
 * Magento
 *
 * NOTICE OF LICENSE
 *
 * This source file is subject to the Open Software License (OSL 3.0)
 * that is bundled with this package in the file LICENSE.txt.
 * It is also available through the world-wide-web at this URL:
 * http://opensource.org/licenses/osl-3.0.php
 * If you did not receive a copy of the license and are unable to
 * obtain it through the world-wide-web, please send an email
 * to license@magentocommerce.com so we can send you a copy immediately.
 *
 * DISCLAIMER
 *
 * Do not edit or add to this file if you wish to upgrade Magento to newer
 * versions in the future. If you wish to customize Magento for your
 * needs please refer to http://www.magentocommerce.com for more information.
 *
 * @category    Mage
 * @package     Mage_Adminhtml
 * @copyright   Copyright (c) 2010 Magento Inc. (http://www.magentocommerce.com)
 * @license     http://opensource.org/licenses/osl-3.0.php  Open Software License (OSL 3.0)
 */

/**
 * Adminhtml media library uploader
 *
 * @category   Mage
 * @package    Mage_Adminhtml
 * @author      Magento Core Team <core@magentocommerce.com>
 */
class Mage_Adminhtml_Block_Media_Uploader extends Mage_Adminhtml_Block_Widget
{

    protected $_config;

    public function __construct()
    {
        parent::__construct();
        $this->setId($this->getId() . '_Uploader');
        $this->setTemplate('media/uploader.phtml');
        $this->getConfig()->setUrl(Mage::getModel('adminhtml/url')->addSessionParam()->getUrl('*/*/upload'));
        $this->getConfig()->setParams(array('form_key' => $this->getFormKey()));
        $this->getConfig()->setFileField('file');
        $this->getConfig()->setFilters(array(
            'images' => array(
                'label' => Mage::helper('adminhtml')->__('Images (.gif, .jpg, .png)'),
                'files' => array('*.gif', '*.jpg', '*.png')
            ),
            'media' => array(
                'label' => Mage::helper('adminhtml')->__('Media (.avi, .flv, .swf)'),
                'files' => array('*.avi', '*.flv', '*.swf')
            ),
            'all'    => array(
                'label' => Mage::helper('adminhtml')->__('All Files'),
                'files' => array('*.*')
            )
        ));
    }

    protected function _prepareLayout()
    {
        $this->setChild(
            'browse_button',
            $this->getLayout()->createBlock('adminhtml/widget_button')
                ->addData(array(
                    'id'      => $this->_getButtonId('browse'),
                    'label'   => Mage::helper('adminhtml')->__('Browse Files...'),
                    'type'    => 'button',
                    'onclick' => $this->getJsObjectName() . '.browse()'
                ))
        );

        $this->setChild(
            'upload_button',
            $this->getLayout()->createBlock('adminhtml/widget_button')
                ->addData(array(
                    'id'      => $this->_getButtonId('upload'),
                    'label'   => Mage::helper('adminhtml')->__('Upload Files'),
                    'type'    => 'button',
                    'onclick' => $this->getJsObjectName() . '.upload()'
                ))
        );

        $this->setChild(
            'delete_button',
            $this->getLayout()->createBlock('adminhtml/widget_button')
                ->addData(array(
                    'id'      => '{{id}}-delete',
                    'class'   => 'delete',
                    'type'    => 'button',
                    'label'   => Mage::helper('adminhtml')->__('Remove'),
                    'onclick' => $this->getJsObjectName() . '.removeFile(\'{{fileId}}\')'
                ))
        );

        return parent::_prepareLayout();
    }

    protected function _getButtonId($buttonName)
    {
        return $this->getHtmlId() . '-' . $buttonName;
    }

    public function getBrowseButtonHtml()
    {
        return $this->getChildHtml('browse_button');
    }

    public function getUploadButtonHtml()
    {
        return $this->getChildHtml('upload_button');
    }

    public function getDeleteButtonHtml()
    {
        return $this->getChildHtml('delete_button');
    }

    /**
     * Retrive uploader js object name
     *
     * @return string
     */
    public function getJsObjectName()
    {
        return $this->getHtmlId() . 'JsObject';
    }

    /**
     * Retrive config json
     *
     * @return string
     */
    public function getConfigJson()
    {
        return Mage::helper('core')->jsonEncode($this->getConfig()->getData());
    }

    /**
     * Retrive config object
     *
     * @return Varien_Config
     */
    public function getConfig()
    {
        if(is_null($this->_config)) {
            $this->_config = new Varien_Object();
        }

        return $this->_config;
    }

    public function getPostMaxSize()
    {
        return ini_get('post_max_size');
    }

    public function getUploadMaxSize()
    {
        return ini_get('upload_max_filesize');
    }

    public function getDataMaxSize()
    {
        return min($this->getPostMaxSize(), $this->getUploadMaxSize());
    }

    public function getDataMaxSizeInBytes()
    {
        $iniSize = $this->getDataMaxSize();
        $size = substr($iniSize, 0, strlen($iniSize)-1);
        $parsedSize = 0;
        switch (strtolower(substr($iniSize, strlen($iniSize)-1))) {
            case 't':
                $parsedSize = $size*(1024*1024*1024*1024);
                break;
            case 'g':
                $parsedSize = $size*(1024*1024*1024);
                break;
            case 'm':
                $parsedSize = $size*(1024*1024);
                break;
            case 'k':
                $parsedSize = $size*1024;
                break;
            case 'b':
            default:
                $parsedSize = $size;
                break;
        }
        return $parsedSize;
    }

    /**
     * Retrive full uploader SWF's file URL
     * Implemented to solve problem with cross domain SWFs
     * Now uploader can be only in the same URL where backend located
     *
     * @param string url to uploader in current theme
     * @return string full URL
     */
    public function getUploaderUrl($url)
    {
        if (!is_string($url)) {
            $url = '';
        }
        $design = Mage::getDesign();
        $theme = $design->getTheme('skin');
        if (empty($url) || !$design->validateFile($url, array('_type' => 'skin', '_theme' => $theme))) {
            $theme = $design->getDefaultTheme();
        }
        return Mage::getBaseUrl(Mage_Core_Model_Store::URL_TYPE_WEB) . 'skin/' .
            $design->getArea() . '/' . $design->getPackageName() . '/' . $theme . '/' . $url;
    }
}