<?php
/*
 * cart object
 *
 * @author dfare - fare development
 * @since 2011-03-26
 */


class cart {

  var $link;
  var $userId;
  var $itemArr;

  /** contructors */
  public function Cart( $mysqlLink, $userId, $itemArr = array() ) {
    $this->__construct($mysqlLink, $userId, $itemArr);
  }
  public function __construct( $mysqlLink, $userId, $itemArr = array() ) {
    $this->link = $mysqlLink;
    $this->userId = $userId;
    $this->itemArr = $itemArr;
  }

  /**
   * empty item array
   *
   * @return bool if items were cleared
   */
  public function clearItems() {
    $itemArr = array();
    if ( count($itemArr) == 0 ) {
      return true;
    }
    return false;
  }

  /**
   * add item to cart
   * @param object product object (product.class.php)
   * @param int quantity of product
   * @attributesArr array of attributes (would contact size, color, etc)
   *
   * @return bool if item was added
   */
  public function addItem( $productObj, $quantity, $attributesArr = array() ) {
    if ( !is_object($productObj) || !is_numeric($quantity) || !is_array($attributesArr) ) {
      return false;
    }

    $init = count($this->itemArr);

    array_push($this->itemArr, array('product'    => $productObj,
                                     'quantity'   => $quantity,
                                     'attributes' => $attributesArr));

    if ( count($this->itemArr) == $init + 1 ) {
      return true;
    }
    return false;
  }

  /**
   * get items in cart
   *
   * @return array of items in cart
   * ex: $array[#]['key']
   *   -- # being cart item id,
   *      key being "product","quantity" etc
   */
  public function getItems() {
    return $this->itemArr;
  }

  /**
   * removes item in cart (cart item id based on $this->getItems())
   *
   * @param int cart item id $this->getItems()
   *
   * @return bool was item deleted
   */

  public function remItem( $itemId ) {
    $init = count($this->itemArr);

    //make sure $this->itemArr[$itemId] exists
    if ( !is_numeric($itemId) || (count($this->itemArr) - 1 < $itemId || $itemId < 0) || !isset($this->itemArr[$itemId]) ) {
      return false;
    }

    $newArr = array();

    foreach ( $this->itemArr as $id => $array ) {
      if ( $itemId == $id ) {
        continue;
      }
      array_push($newArr, $this->itemArr[$id]);
    }

    $this->itemArr = $newArr;

    if ( count($this->itemArr) == $init - 1 ) {
      return true;
    }
    return false;
  }



}
?>