<?php
/*
* 2007-2015 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  2007-2015 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 ImageCore extends ObjectModel
{
    public $id;

    /** @var int Image ID */
    public $id_image;

    /** @var int Product ID */
    public $id_product;

    /** @var int Position used to order images of the same product */
    public $position;

    /** @var bool Image is cover */
    public $cover;

    /** @var string Legend */
    public $legend;

    /** @var string image extension */
    public $image_format = 'jpg';

    /** @var string path to index.php file to be copied to new image folders */
    public $source_index;

    /** @var string image folder */
    protected $folder;

    /** @var string image path without extension */
    protected $existing_path;

    /** @var int access rights of created folders (octal) */
    protected static $access_rights = 0775;

    /**
     * @see ObjectModel::$definition
     */
    public static $definition = array(
        'table' => 'image',
        'primary' => 'id_image',
        'multilang' => true,
        'fields' => array(
            'id_product' => array('type' => self::TYPE_INT, 'shop' => 'both', 'validate' => 'isUnsignedId', 'required' => true),
            'position' =>    array('type' => self::TYPE_INT, 'validate' => 'isUnsignedInt'),
            'cover' =>        array('type' => self::TYPE_BOOL, 'allow_null' => true, 'validate' => 'isBool', 'shop' => true),
            'legend' =>    array('type' => self::TYPE_STRING, 'lang' => true, 'validate' => 'isGenericName', 'size' => 128),
        ),
    );

    protected static $_cacheGetSize = array();

    public function __construct($id = null, $id_lang = null)
    {
        parent::__construct($id, $id_lang);
        $this->image_dir = _PS_PROD_IMG_DIR_;
        $this->source_index = _PS_PROD_IMG_DIR_.'index.php';
    }

    public function add($autodate = true, $null_values = false)
    {
        if ($this->position <= 0) {
            $this->position = Image::getHighestPosition($this->id_product) + 1;
        }

        if ($this->cover) {
            $this->cover = 1;
        } else {
            $this->cover = null;
        }

        return parent::add($autodate, $null_values);
    }

    public function update($null_values = false)
    {
        if ($this->cover) {
            $this->cover = 1;
        } else {
            $this->cover = null;
        }


        return parent::update($null_values);
    }

    public function delete()
    {
        if (!parent::delete()) {
            return false;
        }

        if ($this->hasMultishopEntries()) {
            return true;
        }

        if (!$this->deleteProductAttributeImage() || !$this->deleteImage()) {
            return false;
        }

        // update positions
        Db::getInstance()->execute('SET @position:=0', false);
        Db::getInstance()->execute('UPDATE `'._DB_PREFIX_.'image` SET position=(@position:=@position+1)
									WHERE `id_product` = '.(int)$this->id_product.' ORDER BY position ASC');

        return true;
    }

    /**
     * Return first image (by position) associated with a product attribute
     *
     * @param int $id_shop Shop ID
     * @param int $id_lang Language ID
     * @param int $id_product Product ID
     * @param int $id_product_attribute Product Attribute ID
     * @return array
     */
    public static function getBestImageAttribute($id_shop, $id_lang, $id_product, $id_product_attribute)
    {
        $cache_id = 'Image::getBestImageAttribute'.'-'.(int)$id_product.'-'.(int)$id_product_attribute.'-'.(int)$id_lang.'-'.(int)$id_shop;

        if (!Cache::isStored($cache_id)) {
            $row = Db::getInstance()->getRow('
					SELECT image_shop.`id_image` id_image, il.`legend`
					FROM `'._DB_PREFIX_.'image` i
					INNER JOIN `'._DB_PREFIX_.'image_shop` image_shop
						ON (i.id_image = image_shop.id_image AND image_shop.id_shop = '.(int)$id_shop.')
						INNER JOIN `'._DB_PREFIX_.'product_attribute_image` pai
						ON (pai.`id_image` = i.`id_image` AND pai.`id_product_attribute` = '.(int)$id_product_attribute.')
					LEFT JOIN `'._DB_PREFIX_.'image_lang` il
						ON (image_shop.`id_image` = il.`id_image` AND il.`id_lang` = '.(int)$id_lang.')
					WHERE i.`id_product` = '.(int)$id_product.' ORDER BY i.`position` ASC');

            Cache::store($cache_id, $row);
        } else {
            $row = Cache::retrieve($cache_id);
        }
        return $row;
    }

    /**
     * Return available images for a product
     *
     * @param int $id_lang Language ID
     * @param int $id_product Product ID
     * @param int $id_product_attribute Product Attribute ID
     * @return array Images
     */
    public static function getImages($id_lang, $id_product, $id_product_attribute = null)
    {
        $attribute_filter = ($id_product_attribute ? ' AND ai.`id_product_attribute` = '.(int)$id_product_attribute : '');
        $sql = 'SELECT *
			FROM `'._DB_PREFIX_.'image` i
			LEFT JOIN `'._DB_PREFIX_.'image_lang` il ON (i.`id_image` = il.`id_image`)';

        if ($id_product_attribute) {
            $sql .= ' LEFT JOIN `'._DB_PREFIX_.'product_attribute_image` ai ON (i.`id_image` = ai.`id_image`)';
        }

        $sql .= ' WHERE i.`id_product` = '.(int)$id_product.' AND il.`id_lang` = '.(int)$id_lang.$attribute_filter.'
			ORDER BY i.`position` ASC';
        return Db::getInstance()->executeS($sql);
    }

    /**
     * Check if a product has an image available
     *
     * @param int $id_lang Language ID
     * @param int $id_product Product ID
     * @param int $id_product_attribute Product Attribute ID
     * @return bool
     */
    public static function hasImages($id_lang, $id_product, $id_product_attribute = null)
    {
        $attribute_filter = ($id_product_attribute ? ' AND ai.`id_product_attribute` = '.(int)$id_product_attribute : '');
        $sql = 'SELECT 1
			FROM `'._DB_PREFIX_.'image` i
			LEFT JOIN `'._DB_PREFIX_.'image_lang` il ON (i.`id_image` = il.`id_image`)';

        if ($id_product_attribute) {
            $sql .= ' LEFT JOIN `'._DB_PREFIX_.'product_attribute_image` ai ON (i.`id_image` = ai.`id_image`)';
        }

        $sql .= ' WHERE i.`id_product` = '.(int)$id_product.' AND il.`id_lang` = '.(int)$id_lang.$attribute_filter;
        return (bool)Db::getInstance()->getValue($sql);
    }

    /**
     * Return Images
     *
     * @return array Images
     */
    public static function getAllImages()
    {
        return Db::getInstance()->executeS('
		SELECT `id_image`, `id_product`
		FROM `'._DB_PREFIX_.'image`
		ORDER BY `id_image` ASC');
    }

    /**
     * Return number of images for a product
     *
     * @param int $id_product Product ID
     * @return int number of images
     */
    public static function getImagesTotal($id_product)
    {
        $result = Db::getInstance()->getRow('
		SELECT COUNT(`id_image`) AS total
		FROM `'._DB_PREFIX_.'image`
		WHERE `id_product` = '.(int)$id_product);
        return $result['total'];
    }

    /**
     * Return highest position of images for a product
     *
     * @param int $id_product Product ID
     * @return int highest position of images
     */
    public static function getHighestPosition($id_product)
    {
        $result = Db::getInstance()->getRow('
		SELECT MAX(`position`) AS max
		FROM `'._DB_PREFIX_.'image`
		WHERE `id_product` = '.(int)$id_product);
        return $result['max'];
    }

    /**
     * Delete product cover
     *
     * @param int $id_product Product ID
     * @return bool result
     */
    public static function deleteCover($id_product)
    {
        if (!Validate::isUnsignedId($id_product)) {
            die(Tools::displayError());
        }

        if (file_exists(_PS_TMP_IMG_DIR_.'product_'.$id_product.'.jpg')) {
            unlink(_PS_TMP_IMG_DIR_.'product_'.$id_product.'.jpg');
        }

        return (Db::getInstance()->execute('
			UPDATE `'._DB_PREFIX_.'image`
			SET `cover` = NULL
			WHERE `id_product` = '.(int)$id_product
        ) &&
        Db::getInstance()->execute('
			UPDATE `'._DB_PREFIX_.'image_shop` image_shop
			SET image_shop.`cover` = NULL
			WHERE image_shop.id_shop IN ('.implode(',', array_map('intval', Shop::getContextListShopID())).') AND image_shop.`id_product` = '.(int)$id_product
        ));
    }

    /**
     *Get product cover
     *
     * @param int $id_product Product ID
     * @return bool result
     */
    public static function getCover($id_product)
    {
        return Db::getInstance()->getRow('
			SELECT * FROM `'._DB_PREFIX_.'image_shop` image_shop
			WHERE image_shop.`id_product` = '.(int)$id_product.'
			AND image_shop.`cover`= 1');
    }

    /**
     *Get global product cover
     *
     * @param int $id_product Product ID
     * @return bool result
     */
    public static function getGlobalCover($id_product)
    {
        return Db::getInstance()->getRow('
			SELECT * FROM `'._DB_PREFIX_.'image` i
			WHERE i.`id_product` = '.(int)$id_product.'
			AND i.`cover`= 1');
    }

    /**
     * Copy images from a product to another
     *
     * @param int $id_product_old Source product ID
     * @param bool $id_product_new Destination product ID
     */
    public static function duplicateProductImages($id_product_old, $id_product_new, $combination_images)
    {
        $images_types = ImageType::getImagesTypes('products');
        $result = Db::getInstance()->executeS('
		SELECT `id_image`
		FROM `'._DB_PREFIX_.'image`
		WHERE `id_product` = '.(int)$id_product_old);
        foreach ($result as $row) {
            $image_old = new Image($row['id_image']);
            $image_new = clone $image_old;
            unset($image_new->id);
            $image_new->id_product = (int)$id_product_new;

            // A new id is generated for the cloned image when calling add()
            if ($image_new->add()) {
                $new_path = $image_new->getPathForCreation();
                foreach ($images_types as $image_type) {
                    if (file_exists(_PS_PROD_IMG_DIR_.$image_old->getExistingImgPath().'-'.$image_type['name'].'.jpg')) {
                        if (!Configuration::get('PS_LEGACY_IMAGES')) {
                            $image_new->createImgFolder();
                        }
                        copy(_PS_PROD_IMG_DIR_.$image_old->getExistingImgPath().'-'.$image_type['name'].'.jpg',
                        $new_path.'-'.$image_type['name'].'.jpg');
                        if (Configuration::get('WATERMARK_HASH')) {
                            copy(_PS_PROD_IMG_DIR_.$image_old->getExistingImgPath().'-'.$image_type['name'].'-'.Configuration::get('WATERMARK_HASH').'.jpg',
                            $new_path.'-'.$image_type['name'].'-'.Configuration::get('WATERMARK_HASH').'.jpg');
                        }
                    }
                }

                if (file_exists(_PS_PROD_IMG_DIR_.$image_old->getExistingImgPath().'.jpg')) {
                    copy(_PS_PROD_IMG_DIR_.$image_old->getExistingImgPath().'.jpg', $new_path.'.jpg');
                }

                Image::replaceAttributeImageAssociationId($combination_images, (int)$image_old->id, (int)$image_new->id);

                // Duplicate shop associations for images
                $image_new->duplicateShops($id_product_old);
            } else {
                return false;
            }
        }
        return Image::duplicateAttributeImageAssociations($combination_images);
    }

    protected static function replaceAttributeImageAssociationId(&$combination_images, $saved_id, $id_image)
    {
        if (!isset($combination_images['new']) || !is_array($combination_images['new'])) {
            return;
        }
        foreach ($combination_images['new'] as $id_product_attribute => $image_ids) {
            foreach ($image_ids as $key => $image_id) {
                if ((int)$image_id == (int)$saved_id) {
                    $combination_images['new'][$id_product_attribute][$key] = (int)$id_image;
                }
            }
        }
    }

    /**
     * Duplicate product attribute image associations
     * @param int $id_product_attribute_old
     * @return bool
     */
    public static function duplicateAttributeImageAssociations($combination_images)
    {
        if (!isset($combination_images['new']) || !is_array($combination_images['new'])) {
            return true;
        }
        $query = 'INSERT INTO `'._DB_PREFIX_.'product_attribute_image` (`id_product_attribute`, `id_image`) VALUES ';
        foreach ($combination_images['new'] as $id_product_attribute => $image_ids) {
            foreach ($image_ids as $image_id) {
                $query .= '('.(int)$id_product_attribute.', '.(int)$image_id.'), ';
            }
        }
        $query = rtrim($query, ', ');
        return DB::getInstance()->execute($query);
    }

    /**
     * Reposition image
     *
     * @param int $position Position
     * @param bool $direction Direction
     * @deprecated since version 1.5.0.1 use Image::updatePosition() instead
     */
    public function positionImage($position, $direction)
    {
        Tools::displayAsDeprecated();

        $position = (int)$position;
        $direction = (int)$direction;

        // temporary position
        $high_position = Image::getHighestPosition($this->id_product) + 1;

        Db::getInstance()->execute('
		UPDATE `'._DB_PREFIX_.'image`
		SET `position` = '.(int)$high_position.'
		WHERE `id_product` = '.(int)$this->id_product.'
		AND `position` = '.($direction ? $position - 1 : $position + 1));

        Db::getInstance()->execute('
		UPDATE `'._DB_PREFIX_.'image`
		SET `position` = `position`'.($direction ? '-1' : '+1').'
		WHERE `id_image` = '.(int)$this->id);

        Db::getInstance()->execute('
		UPDATE `'._DB_PREFIX_.'image`
		SET `position` = '.$this->position.'
		WHERE `id_product` = '.(int)$this->id_product.'
		AND `position` = '.(int)$high_position);
    }

    /**
     * Change an image position and update relative positions
     *
     * @param int $way position is moved up if 0, moved down if 1
     * @param int $position new position of the moved image
     * @return int success
     */
    public function updatePosition($way, $position)
    {
        if (!isset($this->id) || !$position) {
            return false;
        }

        // < and > statements rather than BETWEEN operator
        // since BETWEEN is treated differently according to databases
        $result = (Db::getInstance()->execute('
			UPDATE `'._DB_PREFIX_.'image`
			SET `position`= `position` '.($way ? '- 1' : '+ 1').'
			WHERE `position`
			'.($way
                ? '> '.(int)$this->position.' AND `position` <= '.(int)$position
                : '< '.(int)$this->position.' AND `position` >= '.(int)$position).'
			AND `id_product`='.(int)$this->id_product)
        && Db::getInstance()->execute('
			UPDATE `'._DB_PREFIX_.'image`
			SET `position` = '.(int)$position.'
			WHERE `id_image` = '.(int)$this->id_image));

        return $result;
    }

    public static function getSize($type)
    {
        if (!isset(self::$_cacheGetSize[$type]) || self::$_cacheGetSize[$type] === null) {
            self::$_cacheGetSize[$type] = Db::getInstance()->getRow('
				SELECT `width`, `height`
				FROM '._DB_PREFIX_.'image_type
				WHERE `name` = \''.pSQL($type).'\'
			');
        }
        return self::$_cacheGetSize[$type];
    }

    public static function getWidth($params, &$smarty)
    {
        $result = self::getSize($params['type']);
        return $result['width'];
    }

    public static function getHeight($params, &$smarty)
    {
        $result = self::getSize($params['type']);
        return $result['height'];
    }

    /**
     * Clear all images in tmp dir
     */
    public static function clearTmpDir()
    {
        foreach (scandir(_PS_TMP_IMG_DIR_) as $d) {
            if (preg_match('/(.*)\.jpg$/', $d)) {
                unlink(_PS_TMP_IMG_DIR_.$d);
            }
        }
    }
    /**
     * Delete Image - Product attribute associations for this image
     */
    public function deleteProductAttributeImage()
    {
        return Db::getInstance()->execute('
			DELETE
			FROM `'._DB_PREFIX_.'product_attribute_image`
			WHERE `id_image` = '.(int)$this->id
        );
    }

    /**
     * Delete the product image from disk and remove the containing folder if empty
     * Handles both legacy and new image filesystems
     */
    public function deleteImage($force_delete = false)
    {
        if (!$this->id) {
            return false;
        }

        // Delete base image
        if (file_exists($this->image_dir.$this->getExistingImgPath().'.'.$this->image_format)) {
            unlink($this->image_dir.$this->getExistingImgPath().'.'.$this->image_format);
        } else {
            return false;
        }

        $files_to_delete = array();

        // Delete auto-generated images
        $image_types = ImageType::getImagesTypes();
        foreach ($image_types as $image_type) {
            $files_to_delete[] = $this->image_dir.$this->getExistingImgPath().'-'.$image_type['name'].'.'.$this->image_format;
            if (Configuration::get('WATERMARK_HASH')) {
                $files_to_delete[] = $this->image_dir.$this->getExistingImgPath().'-'.$image_type['name'].'-'.Configuration::get('WATERMARK_HASH').'.'.$this->image_format;
            }
        }

        // Delete watermark image
        $files_to_delete[] = $this->image_dir.$this->getExistingImgPath().'-watermark.'.$this->image_format;
        // delete index.php
        $files_to_delete[] = $this->image_dir.$this->getImgFolder().'index.php';
        // Delete tmp images
        $files_to_delete[] = _PS_TMP_IMG_DIR_.'product_'.$this->id_product.'.'.$this->image_format;
        $files_to_delete[] = _PS_TMP_IMG_DIR_.'product_mini_'.$this->id_product.'.'.$this->image_format;

        foreach ($files_to_delete as $file) {
            if (file_exists($file) && !@unlink($file)) {
                return false;
            }
        }

        // Can we delete the image folder?
        if (is_dir($this->image_dir.$this->getImgFolder())) {
            $delete_folder = true;
            foreach (scandir($this->image_dir.$this->getImgFolder()) as $file) {
                if (($file != '.' && $file != '..')) {
                    $delete_folder = false;
                    break;
                }
            }
        }
        if (isset($delete_folder) && $delete_folder) {
            @rmdir($this->image_dir.$this->getImgFolder());
        }

        return true;
    }

    /**
     * Recursively deletes all product images in the given folder tree and removes empty folders.
     *
     * @param string $path folder containing the product images to delete
     * @param string $format image format
     * @return bool success
     */
    public static function deleteAllImages($path, $format = 'jpg')
    {
        if (!$path || !$format || !is_dir($path)) {
            return false;
        }
        foreach (scandir($path) as $file) {
            if (preg_match('/^[0-9]+(\-(.*))?\.'.$format.'$/', $file)) {
                unlink($path.$file);
            } elseif (is_dir($path.$file) && (preg_match('/^[0-9]$/', $file))) {
                Image::deleteAllImages($path.$file.'/', $format);
            }
        }

        // Can we remove the image folder?
        if (is_numeric(basename($path))) {
            $remove_folder = true;
            foreach (scandir($path) as $file) {
                if (($file != '.' && $file != '..' && $file != 'index.php')) {
                    $remove_folder = false;
                    break;
                }
            }

            if ($remove_folder) {
                // we're only removing index.php if it's a folder we want to delete
                if (file_exists($path.'index.php')) {
                    @unlink($path.'index.php');
                }
                @rmdir($path);
            }
        }

        return true;
    }

    /**
     * Returns image path in the old or in the new filesystem
     *
     * @ returns string image path
     */
    public function getExistingImgPath()
    {
        if (!$this->id) {
            return false;
        }

        if (!$this->existing_path) {
            if (Configuration::get('PS_LEGACY_IMAGES') && file_exists(_PS_PROD_IMG_DIR_.$this->id_product.'-'.$this->id.'.'.$this->image_format)) {
                $this->existing_path = $this->id_product.'-'.$this->id;
            } else {
                $this->existing_path = $this->getImgPath();
            }
        }

        return $this->existing_path;
    }

    /**
     * Returns the path to the folder containing the image in the new filesystem
     *
     * @return string path to folder
     */
    public function getImgFolder()
    {
        if (!$this->id) {
            return false;
        }

        if (!$this->folder) {
            $this->folder = Image::getImgFolderStatic($this->id);
        }

        return $this->folder;
    }

    /**
     * Create parent folders for the image in the new filesystem
     *
     * @return bool success
     */
    public function createImgFolder()
    {
        if (!$this->id) {
            return false;
        }

        if (!file_exists(_PS_PROD_IMG_DIR_.$this->getImgFolder())) {
            // Apparently sometimes mkdir cannot set the rights, and sometimes chmod can't. Trying both.
            $success = @mkdir(_PS_PROD_IMG_DIR_.$this->getImgFolder(), self::$access_rights, true);
            $chmod = @chmod(_PS_PROD_IMG_DIR_.$this->getImgFolder(), self::$access_rights);

            // Create an index.php file in the new folder
            if (($success || $chmod)
                && !file_exists(_PS_PROD_IMG_DIR_.$this->getImgFolder().'index.php')
                && file_exists($this->source_index)) {
                return @copy($this->source_index, _PS_PROD_IMG_DIR_.$this->getImgFolder().'index.php');
            }
        }
        return true;
    }

    /**
     * Returns the path to the image without file extension
     *
     * @return string path
     */
    public function getImgPath()
    {
        if (!$this->id) {
            return false;
        }

        $path = $this->getImgFolder().$this->id;
        return $path;
    }

    /**
     * Returns the path to the folder containing the image in the new filesystem
     *
     * @param mixed $id_image
     * @return string path to folder
     */
    public static function getImgFolderStatic($id_image)
    {
        if (!is_numeric($id_image)) {
            return false;
        }
        $folders = str_split((string)$id_image);
        return implode('/', $folders).'/';
    }

    /**
     * Move all legacy product image files from the image folder root to their subfolder in the new filesystem.
     * If max_execution_time is provided, stops before timeout and returns string "timeout".
     * If any image cannot be moved, stops and returns "false"
     *
     * @param int $max_execution_time
     * @return mixed success or timeout
     */
    public static function moveToNewFileSystem($max_execution_time = 0)
    {
        $start_time = time();
        $image = null;
        $tmp_folder = 'duplicates/';
        foreach (scandir(_PS_PROD_IMG_DIR_) as $file) {
            // matches the base product image or the thumbnails
            if (preg_match('/^([0-9]+\-)([0-9]+)(\-(.*))?\.jpg$/', $file, $matches)) {
                // don't recreate an image object for each image type
                if (!$image || $image->id !== (int)$matches[2]) {
                    $image = new Image((int)$matches[2]);
                }
                // image exists in DB and with the correct product?
                if (Validate::isLoadedObject($image) && $image->id_product == (int)rtrim($matches[1], '-')) {
                    // create the new folder if it does not exist
                    if (!$image->createImgFolder()) {
                        return false;
                    }

                    // if there's already a file at the new image path, move it to a dump folder
                    // most likely the preexisting image is a demo image not linked to a product and it's ok to replace it
                    $new_path = _PS_PROD_IMG_DIR_.$image->getImgPath().(isset($matches[3]) ? $matches[3] : '').'.jpg';
                    if (file_exists($new_path)) {
                        if (!file_exists(_PS_PROD_IMG_DIR_.$tmp_folder)) {
                            @mkdir(_PS_PROD_IMG_DIR_.$tmp_folder, self::$access_rights);
                            @chmod(_PS_PROD_IMG_DIR_.$tmp_folder, self::$access_rights);
                        }
                        $tmp_path = _PS_PROD_IMG_DIR_.$tmp_folder.basename($file);
                        if (!@rename($new_path, $tmp_path) || !file_exists($tmp_path)) {
                            return false;
                        }
                    }
                    // move the image
                if (!@rename(_PS_PROD_IMG_DIR_.$file, $new_path) || !file_exists($new_path)) {
                    return false;
                }
                }
            }
            if ((int)$max_execution_time != 0 && (time() - $start_time > (int)$max_execution_time - 4)) {
                return 'timeout';
            }
        }
        return true;
    }

    /**
     * Try to create and delete some folders to check if moving images to new file system will be possible
     *
     * @return bool success
     */
    public static function testFileSystem()
    {
        $safe_mode = Tools::getSafeModeStatus();
        if ($safe_mode) {
            return false;
        }
        $folder1 = _PS_PROD_IMG_DIR_.'testfilesystem/';
        $test_folder = $folder1.'testsubfolder/';
        // check if folders are already existing from previous failed test
        if (file_exists($test_folder)) {
            @rmdir($test_folder);
            @rmdir($folder1);
        }
        if (file_exists($test_folder)) {
            return false;
        }

        @mkdir($test_folder, self::$access_rights, true);
        @chmod($test_folder, self::$access_rights);
        if (!is_writeable($test_folder)) {
            return false;
        }
        @rmdir($test_folder);
        @rmdir($folder1);
        if (file_exists($folder1)) {
            return false;
        }
        return true;
    }

    /**
     * Returns the path where a product image should be created (without file format)
     *
     * @return string path
     */
    public function getPathForCreation()
    {
        if (!$this->id) {
            return false;
        }
        if (Configuration::get('PS_LEGACY_IMAGES')) {
            if (!$this->id_product) {
                return false;
            }
            $path = $this->id_product.'-'.$this->id;
        } else {
            $path = $this->getImgPath();
            $this->createImgFolder();
        }
        return _PS_PROD_IMG_DIR_.$path;
    }
}