<?php
/*
* 2007-2016 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  2007-2016 PrestaShop SA
*  @license    http://opensource.org/licenses/osl-3.0.php  Open Software License (OSL 3.0)
*  International Registered Trademark & Property of PrestaShop SA
*/

/**
 * Simple class to output CSV data
 * Uses CollectionCore
 * @since 1.5
 */
class CSVCore
{
    public $filename;
    public $collection;
    public $delimiter;

    /**
    * Loads objects, filename and optionnaly a delimiter.
    * @param array|Iterator $collection Collection of objects / arrays (of non-objects)
    * @param string $filename : used later to save the file
    * @param string $delimiter Optional : delimiter used
    */
    public function __construct($collection, $filename, $delimiter = ';')
    {
        $this->filename = $filename;
        $this->delimiter = $delimiter;
        $this->collection = $collection;
    }

    /**
     * Main function
     * Adds headers
     * Outputs
     */
    public function export()
    {
        $this->headers();

        $header_line = false;

        foreach ($this->collection as $object) {
            $vars = get_object_vars($object);
            if (!$header_line) {
                $this->output(array_keys($vars));
                $header_line = true;
            }

            // outputs values
            $this->output($vars);
            unset($vars);
        }
    }

    /**
     * Wraps data and echoes
     * Uses defined delimiter
     */
    public function output($data)
    {
        $wraped_data = array_map(array('CSVCore', 'wrap'), $data);
        echo sprintf("%s\n", implode($this->delimiter, $wraped_data));
    }

    /**
     * Escapes data
     * @param string $data
     * @return string $data
     */
    public static function wrap($data)
    {
        $data = str_replace(array('"', ';'), '', $data);
        return sprintf('"%s"', $data);
    }

    /**
    * Adds headers
    */
    public function headers()
    {
        header('Content-type: text/csv');
        header('Content-Type: application/force-download; charset=UTF-8');
        header('Cache-Control: no-store, no-cache');
        header('Content-disposition: attachment; filename="'.$this->filename.'.csv"');
    }
}
