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<?php 
/*
  This file is part of GNU TALER.
  Copyright (C) 2014, 2015 GNUnet e.V.

  TALER is free software; you can redistribute it and/or modify it under the
  terms of the GNU Lesser General Public License as published by the Free Software
  Foundation; either version 2.1, or (at your option) any later version.

  TALER is distributed in the hope that it will be useful, but WITHOUT ANY
  WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
  A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for more details.

  You should have received a copy of the GNU Lesser General Public License along with
  TALER; see the file COPYING.  If not, If not, see <http://www.gnu.org/licenses/>

*/

include '../frontend_lib/util.php';

$hc = get($_GET["uuid"]);

if (empty($hc))
{
  http_response_code(400);
  echo json_encode(array(
    "error" => "missing parameter",
    "parameter" => "uuid"
  ));
  return;
}

session_start();

$payments = get($_SESSION['payments'], array());
$my_payment = get($payments[$hc]);

if (null === $my_payment)
{
  http_response_code(400);
  echo json_encode(array(
    "error" => "no session active",
  ));
  return;
}

$post_body = file_get_contents('php://input');

$now = new DateTime('now');
$edate = array (
  'edate' =>
  "/Date(" . $now->add(new DateInterval('P2W'))->getTimestamp() . ")/");

$deposit_permission = json_decode ($post_body, true);

$to_add = array(
  'max_fee' => array(
    'value' => 3,
    'fraction' => 8,
    'currency' => $_SESSION['currency']),
  'amount' => array('value' => $_SESSION['amount_value'],
  'fraction' => $_SESSION['amount_fraction'],
  'currency' => $_SESSION['currency']));

$new_deposit_permission = array_merge($deposit_permission, $to_add);
$new_deposit_permission_edate = array_merge($new_deposit_permission, $edate);

/* Craft the HTTP request, note that the backend
  could be on an entirely different machine if
  desired. */

// Backend is relative to the shop site.
$url = url_rel("backend/pay");

$req = new http\Client\Request("POST",
                               $url,
                               array("Content-Type" => "application/json"));
$req->getBody()->append (json_encode ($new_deposit_permission));

// Execute the HTTP request
$client = new http\Client;
$client->enqueue($req)->send();

// Fetch the response
$resp = $client->getResponse();
$status_code = $resp->getResponseCode();

// Our response code is the same we got from the backend:
http_response_code($status_code);

// Now generate our body  
if ($status_code != 200)
{
  $json = json_encode(
    array(
      "error" => "backend error",
      "status" => $status_code,
      "detail" => $resp->body->toString()));
  echo $json;
  die();
}

$my_payment["is_payed"] = true;

?>