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path: root/src/frontend_blog/essay_fulfillment.php
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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';
  include '../frontend_lib/merchants.php';
  include '../frontend_lib/config.php';
  include './blog_lib.php';
  
  $article = get($_GET['article']);
  if (null == $article){
    http_response_code(400);
    echo "<p>Bad request (article missing)</p>";
    return;
  }
  session_start();
  $payments = get($_SESSION['payments'], array());
  $my_payment = get($payments[$article]);
  log_string("ffil " . article_state_to_str($my_payment)); 
  $pay_url = url_rel("essay_pay.php");
  $offering_url = url_rel("essay_offer.php", true);
  $offering_url .= "?article=$article";
  if (false == $my_payment['ispayed'] || null === $my_payment){
    $tid = get($_GET['tid']);
    $timestamp = get($_GET['timestamp']);
    // 1st time
    if (null == $tid || null == $timestamp){
      $js_code = "get_contract(\"$article\")";
      $cc_page = template("./essay_cc-form.html", array('article' => $article, 'jscode' => $js_code));
      echo $cc_page;
      die();
    }
    // restore contract
    $now = new DateTime();
    $now->setTimestamp(intval($timestamp));
    $contract_rec = generate_contract(0,
                                      50000,
  		                      $MERCHANT_CURRENCY,
  				      intval($tid),
  				      trim(get_title($article)),
  				      $article,
  				      $article,
  				      array(),
  				      $now,
  				      get_full_uri());
    $resp = give_to_backend($_SERVER['HTTP_HOST'],
                            "backend/contract",
                            $contract_rec);
    if ($resp->getResponseCode() != 200){
      echo json_encode(array(
        'error' => "internal error",
        'hint' => "non hashable contract",
        'detail' => $resp->body->toString()
      ), JSON_PRETTY_PRINT);
      die();
    }
    $hc = json_decode($resp->body->toString(), true)['H_contract'];
    $my_payment['hc'] = $hc;
    $js_code = "executePayment('$hc', '$pay_url', '$offering_url')";
    $cc_page = template("./essay_cc-form.html", array('article' => $article, 'jscode' => $js_code));
    echo $cc_page;
    return;
    }
  // control here == article payed
  $article = get_article($article);
  echo $article;
?>