<?php

namespace USPS;

/**
 * Class TrackConfirm.
 */
class TrackConfirm extends USPSBase
{
    /**
     * @var string - the api version used for this type of call
     */
    protected $apiVersion = 'TrackV2';
    /**
     * @var array - list of all packages added so far
     */
    protected $packages = [];

    public function getEndpoint()
    {
        return self::$testMode ? 'http://production.shippingapis.com/ShippingAPITest.dll' : 'http://production.shippingapis.com/ShippingAPI.dll';
    }

    /**
     * Perform the API call.
     *
     * @return string
     */
    public function getTracking()
    {
        return $this->doRequest();
    }

    /**
     * returns array of all packages added so far.
     *
     * @return array
     */
    public function getPostFields()
    {
        return $this->packages;
    }

    /**
     * Add Package to the stack.
     *
     * @param string $id the address unique id
     *
     * @return void
     */
    public function addPackage($id)
    {
        $this->packages['TrackID'][] = ['@attributes' => ['ID' => $id]];
    }
}