<?php
/*------------------------------------------------------------------------------
  $Id$

  AbanteCart, Ideal OpenSource Ecommerce Solution
  http://www.AbanteCart.com

  Copyright © 2011-2014 Belavier Commerce LLC

  This source file is subject to Open Software License (OSL 3.0)
  License details is bundled with this package in the file LICENSE.txt.
  It is also available at this URL:
  <http://www.opensource.org/licenses/OSL-3.0>

 UPGRADE NOTE:
   Do not edit or add to this file if you wish to upgrade AbanteCart to newer
   versions in the future. If you wish to customize AbanteCart for your
   needs please refer to http://www.AbanteCart.com for more information.
------------------------------------------------------------------------------*/
if (! defined ( 'DIR_CORE' )) {
	header ( 'Location: static_pages/' );
}
/**
 * Class AWeight
 */
final class AWeight {
	private $weights = array();
	/**
	 * @var ADB
	 */
	private $db;
	/**
	 * @var AConfig
	 */
	private $config;

	/**
	 * @param $registry Registry
	 */
	public function __construct($registry) {
		$this->db = $registry->get('db');
		$this->config = $registry->get('config');
		$sql = "SELECT *
				FROM " . $this->db->table("weight_classes") . " wc
				LEFT JOIN " . $this->db->table("weight_class_descriptions") . " wcd
					ON (wc.weight_class_id = wcd.weight_class_id)
				WHERE wcd.language_id = '" . (int)$this->config->get('storefront_language_id') . "'";
		$weight_class_query = $this->db->query($sql);
    	foreach ($weight_class_query->rows as $result) {
      		$this->weights[strtolower($result['unit'])] = array('weight_class_id' => $result['weight_class_id'],
																'title'           => $result['title'],
																'unit'            => $result['unit'],
																'value'           => $result['value'] );
    	}
  	}

	/**
	 * convert weigth unit based
	 * @param float $value
	 * @param string $unit_from
	 * @param string $unit_to
	 * @return float
	 */
	public function convert($value, $unit_from, $unit_to) {
		if ($unit_from == $unit_to) {
      		return $value;
		}
		
		if (!isset($this->weights[strtolower($unit_from)]) || !isset($this->weights[strtolower($unit_to)])) {
			return $value;
		} else {			
			$from = $this->weights[strtolower($unit_from)]['value'];
			$to = $this->weights[strtolower($unit_to)]['value'];
		
			return $value * ($to / $from);
		}
  	}

	/**
	 * convert weigth id based
	 * @param float $value
	 * @param int $from_id
	 * @param int $to_id
	 * @return float
	 */

	public function convertByID($value, $from_id, $to_id) {
		return $this->convert( $value, $this->getUnit($from_id), $this->getUnit($to_id) );
	}

	/**
	 * convert format unit based
	 * @param float $value
	 * @param string $unit
	 * @param string $decimal_point
	 * @param string $thousand_point
	 * @return string
	 */
	public function format($value, $unit, $decimal_point = '.', $thousand_point = ',') {
		if (isset($this->weights[strtolower($unit)])) {
    		return number_format($value, 2, $decimal_point, $thousand_point) . $this->weights[strtolower($unit)]['unit'];
		} else {
			return number_format($value, 2, $decimal_point, $thousand_point);
		}
	}

	/**
	 * convert format id based
	 * @param float $value
	 * @param int $weight_class_id
	 * @param string $decimal_point
	 * @param string $thousand_point
	 * @return string
	 */
	public function formatByID($value, $weight_class_id, $decimal_point = '.', $thousand_point = ',') {
		return $this->format($value, $this->getUnit($weight_class_id), $decimal_point, $thousand_point);
	}

	/**
	 * get weigth unit code based on $weigth_class_id
	 * @param int $weight_class_id
	 * @return string
	 */

	public function getUnit($weight_class_id) {
		foreach ($this->weights as $wth) {
			if ( $wth['weight_class_id'] == $weight_class_id ) {
    			return $wth['unit'];
			}		
		}
		return '';
	}	  	

	/**
	 * get weigth_class_id based on unit code
	 * @param string $weight_unit
	 * @return string|int
	 */

	public function getClassID($weight_unit) {
		if (isset($this->weights[$weight_unit])) {
    		return $this->weights[$weight_unit]['weight_class_id'];
		} else {
			return '';
		}
	}
}