<?php
/*
* 2007-2013 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  2007-2013 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 AttachmentCore extends ObjectModel
{
	public $file;
	public $file_name;
	public $name;
	public $mime;
	public $description;

	/** @var integer position */
	public $position;

	/**
	 * @see ObjectModel::$definition
	 */
	public static $definition = array(
		'table' => 'attachment',
		'primary' => 'id_attachment',
		'multilang' => true,
		'fields' => array(
			'file' => 			array('type' => self::TYPE_STRING, 'validate' => 'isGenericName', 'required' => true, 'size' => 40),
			'mime' => 			array('type' => self::TYPE_STRING, 'validate' => 'isCleanHtml', 'required' => true, 'size' => 128),
			'file_name' => 		array('type' => self::TYPE_STRING, 'validate' => 'isGenericName', 'size' => 128),

			// Lang fields
			'name' => 			array('type' => self::TYPE_STRING, 'lang' => true, 'validate' => 'isGenericName', 'required' => true, 'size' => 32),
			'description' => 	array('type' => self::TYPE_STRING, 'lang' => true, 'validate' => 'isCleanHtml'),
		),
	);

	public function delete()
	{
		@unlink(_PS_DOWNLOAD_DIR_.$this->file);

		$products = Db::getInstance()->executeS('
							SELECT id_product
							FROM '._DB_PREFIX_.'product_attachment
							WHERE id_attachment='.(int)$this->id);

		Db::getInstance()->execute('DELETE FROM '._DB_PREFIX_.'product_attachment WHERE id_attachment = '.(int)$this->id);

		foreach ($products as $product)
			Product::updateCacheAttachment((int)$product['id_product']);

		return parent::delete();
	}

	public function deleteSelection($attachments)
	{
		$return = 1;
		foreach ($attachments as $id_attachment)
		{
			$attachment = new Attachment((int)$id_attachment);
			$return &= $attachment->delete();
		}
		return $return;
	}

	public static function getAttachments($id_lang, $id_product, $include = true)
	{
		return Db::getInstance()->executeS('
			SELECT *
			FROM '._DB_PREFIX_.'attachment a
			LEFT JOIN '._DB_PREFIX_.'attachment_lang al
				ON (a.id_attachment = al.id_attachment AND al.id_lang = '.(int)$id_lang.')
			WHERE a.id_attachment '.($include ? 'IN' : 'NOT IN').' (
				SELECT pa.id_attachment
				FROM '._DB_PREFIX_.'product_attachment pa
				WHERE id_product = '.(int)$id_product.'
			)'
		);
	}

	/**
	 * deassociate $id_product from the current object
	 *
	 * @static
	 * @param $id_product int
	 * @return bool
	 */
	public static function deleteProductAttachments($id_product)
	{
		$res = Db::getInstance()->execute('
		DELETE FROM '._DB_PREFIX_.'product_attachment
		WHERE id_product = '.(int)$id_product);

		Product::updateCacheAttachment((int)$id_product);
		
		return $res;
	}

	/**
	 * associate $id_product to the current object.
	 * 
	 * @param int $id_product id of the product to associate
	 * @return boolean true if succed
	 */
	public function attachProduct($id_product)
	{
		$res = Db::getInstance()->execute('
			INSERT INTO '._DB_PREFIX_.'product_attachment 
				(id_attachment, id_product) VALUES
				('.(int)$this->id.', '.(int)$id_product.')');
			
		Product::updateCacheAttachment((int)$id_product);
		
		return $res;			
	}

	/**
	 * associate an array of id_attachment $array to the product $id_product
	 * and remove eventual previous association
	 *
	 * @static
	 * @param $id_product
	 * @param $array
	 * @return bool
	 */
	public static function attachToProduct($id_product, $array)
	{
		$result1 = Attachment::deleteProductAttachments($id_product);

		if (is_array($array))
		{
			$ids = array();
			foreach ($array as $id_attachment)
				if ((int)$id_attachment > 0)
					$ids[] = array('id_product' => (int)$id_product, 'id_attachment' => (int)$id_attachment);

			if (!empty($ids))
				$result2 = Db::getInstance()->insert('product_attachment', $ids);

		}
		
		Product::updateCacheAttachment((int)$id_product);
		if (is_array($array))
			return ($result1 && (!isset($result2) || $result2));
			
		return $result1;
	}

	public static function getProductAttached($id_lang, $list)
	{
		$ids_attachements = array();
		if (is_array($list))
		{
			foreach ($list as $attachement)
				$ids_attachements[] = $attachement['id_attachment'];

			$sql = 'SELECT * FROM `'._DB_PREFIX_.'product_attachment` pa
					LEFT JOIN `'._DB_PREFIX_.'product_lang` pl ON (pa.`id_product` = pl.`id_product`'.Shop::addSqlRestrictionOnLang('pl').')
					WHERE `id_attachment` IN ('.implode(',', array_map('intval', $ids_attachements)).')
						AND pl.`id_lang` = '.(int)$id_lang;
			$tmp = Db::getInstance()->executeS($sql);
			$product_attachements = array();
			foreach ($tmp as $t)
				$product_attachements[$t['id_attachment']][] = $t['name'];
			return $product_attachements;
		}
		else
			return false;
	}
}

