File Manager

<?php
/*
* 2007-2014 PrestaShop
*
* 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@prestashop.com so we can send you a copy immediately.
*
* DISCLAIMER
*
* Do not edit or add to this file if you wish to upgrade PrestaShop to newer
* versions in the future. If you wish to customize PrestaShop for your
* needs please refer to http://www.prestashop.com for more information.
*
*  @author PrestaShop SA <contact@prestashop.com>
*  @copyright  2007-2014 PrestaShop SA
*  @license    http://opensource.org/licenses/osl-3.0.php  Open Software License (OSL 3.0)
*  International Registered Trademark & Property of PrestaShop SA
*/

class AdminAttachmentsControllerCore extends AdminController
{
	public $bootstrap = true ;

	protected $product_attachements = array();

	public function __construct()
	{
	 	$this->table = 'attachment';
		$this->className = 'Attachment';
	 	$this->lang = true;

		$this->addRowAction('edit');
		$this->addRowAction('view');
		$this->addRowAction('delete');

		$this->_select = 'IFNULL(virtual.products, 0) as products';
		$this->_join = 'LEFT JOIN (SELECT id_attachment, COUNT(*) as products FROM '._DB_PREFIX_.'product_attachment GROUP BY id_attachment) virtual ON a.id_attachment = virtual.id_attachment';

		$this->fields_list = array(
			'id_attachment' => array(
				'title' => $this->l('ID'),
				'align' => 'center',
				'class' => 'fixed-width-xs'
			),
			'name' => array(
				'title' => $this->l('Name')
			),
			'file' => array(
				'title' => $this->l('File')
			),
			'file_size' => array(
				'title' => $this->l('Size'),
				'callback' => 'displayHumanReadableSize'
			),
			'products' => array(
				'title' => $this->l('Associated to'),
				'suffix' => $this->l('product(s)'),
				'filter_key' => 'virtual!products',
			),
		);

		$this->bulk_actions = array(
			'delete' => array(
				'text' => $this->l('Delete selected'),
				'icon' => 'icon-trash',
				'confirm' => $this->l('Delete selected items?')
			)
		);

		parent::__construct();
	}

	public static function displayHumanReadableSize($size)
	{
		return Tools::formatBytes($size);
	}

	public function initPageHeaderToolbar()
	{
		if (empty($this->display))
			$this->page_header_toolbar_btn['new_attachment'] = array(
				'href' => self::$currentIndex.'&addattachment&token='.$this->token,
				'desc' => $this->l('Add new attachment', null, null, false),
				'icon' => 'process-icon-new'
			);

		parent::initPageHeaderToolbar();
	}

	public function renderView()
	{
		if (($obj = $this->loadObject(true)) && Validate::isLoadedObject($obj))
		{
			$link = $this->context->link->getPageLink('attachment', true, NULL, 'id_attachment='.$obj->id);
			Tools::redirectLink($link);
		}
		return $this->displayWarning($this->l('File not found'));
	}

	public function renderForm()
	{
		if (($obj = $this->loadObject(true)) && Validate::isLoadedObject($obj))
		{
			$link = $this->context->link->getPageLink('attachment', true, NULL, 'id_attachment='.$obj->id);

			if (file_exists(_PS_DOWNLOAD_DIR_.$obj->file))
				$size = round(filesize(_PS_DOWNLOAD_DIR_.$obj->file) / 1024);
		}

		$this->fields_form = array(
			'legend' => array(
				'title' => $this->l('Attachment'),
				'icon' => 'icon-paper-clip'
			),
			'input' => array(
				array(
					'type' => 'text',
					'label' => $this->l('Filename'),
					'name' => 'name',
					'required' => true,
					'lang' => true,
					'col' => 4
				),
				array(
					'type' => 'textarea',
					'label' => $this->l('Description'),
					'name' => 'description',
					'lang' => true,
					'col' => 6
				),
				array(
					'type' => 'file',
					'file' => isset($link) ? $link : null,
					'size' => isset($size) ? $size : null,
					'label' => $this->l('File'),
					'name' => 'file',
					'col' => 6
				),
			),
			'submit' => array(
				'title' => $this->l('Save'),
			)
		);

		return parent::renderForm();
	}

	public function getList($id_lang, $order_by = null, $order_way = null, $start = 0, $limit = null, $id_lang_shop = false)
	{
		parent::getList((int)$id_lang, $order_by, $order_way, $start, $limit, $id_lang_shop);

		if (count($this->_list))
		{
			$this->product_attachements = Attachment::getProductAttached((int)$id_lang, $this->_list);

			$list_product_list = array();
			foreach ($this->_list as $list)
			{
				$product_list = '';
				if (isset($this->product_attachements[$list['id_attachment']]))
				{
					foreach ($this->product_attachements[$list['id_attachment']] as $product)
						$product_list .= $product.', ';
				}
				$list_product_list[$list['id_attachment']] = $product_list;
			}

			// Assign array in list_action_delete.tpl
			$this->tpl_delete_link_vars = array(
				'product_list' => $list_product_list,
				'product_attachements' => $this->product_attachements
			);
		}
	}

	public function postProcess()
	{
		if (_PS_MODE_DEMO_)
		{
			$this->errors[] = Tools::displayError('This functionality has been disabled.');
			return;
		}

		if (Tools::isSubmit('submitAdd'.$this->table))
		{
			$id = (int)Tools::getValue('id_attachment');
			if ($id && $a = new Attachment($id))
			{
				$_POST['file'] = $a->file;
				$_POST['mime'] = $a->mime;
			}
			if (!count($this->errors))
			{
				if (isset($_FILES['file']) && is_uploaded_file($_FILES['file']['tmp_name']))
				{
					if ($_FILES['file']['size'] > (Configuration::get('PS_ATTACHMENT_MAXIMUM_SIZE') * 1024 * 1024))
						$this->errors[] = sprintf(
							$this->l('The file is too large. Maximum size allowed is: %1$d kB. The file you are trying to upload is %2$d kB.'),
							(Configuration::get('PS_ATTACHMENT_MAXIMUM_SIZE') * 1024),
							number_format(($_FILES['file']['size'] / 1024), 2, '.', '')
						);
					else
					{
						do $uniqid = sha1(microtime());
						while (file_exists(_PS_DOWNLOAD_DIR_.$uniqid));
						if (!move_uploaded_file($_FILES['file']['tmp_name'], _PS_DOWNLOAD_DIR_.$uniqid))
							$this->errors[] = $this->l('Failed to copy the file.');
						$_POST['file_name'] = $_FILES['file']['name'];
						@unlink($_FILES['file']['tmp_name']);
						if (!sizeof($this->errors) && isset($a) && file_exists(_PS_DOWNLOAD_DIR_.$a->file))
							unlink(_PS_DOWNLOAD_DIR_.$a->file);
						$_POST['file'] = $uniqid;
						$_POST['mime'] = $_FILES['file']['type'];
					}
				}
				elseif (array_key_exists('file', $_FILES) && (int)$_FILES['file']['error'] === 1)
				{
					$max_upload = (int)ini_get('upload_max_filesize');
					$max_post = (int)ini_get('post_max_size');
					$upload_mb = min($max_upload, $max_post);
					$this->errors[] = sprintf(
						$this->l('The file %1$s exceeds the size allowed by the server. The limit is set to %2$d MB.'),
						'<b>'.$_FILES['file']['name'].'</b> ',
						'<b>'.$upload_mb.'</b>'
					);
				}
				elseif (!isset($a) || (isset($a) && !file_exists(_PS_DOWNLOAD_DIR_.$a->file)))
					$this->errors[] = $this->l('Upload error. Please check your server configurations for the maximum upload size allowed.');
			}
			$this->validateRules();
		}
		$return = parent::postProcess();
		if (!$return && isset($uniqid) && file_exists(_PS_DOWNLOAD_DIR_.$uniqid))
			unlink(_PS_DOWNLOAD_DIR_.$uniqid);
		return $return;
	}
}