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<?php
/*
This file is part of GNU TALER.
Copyright (C) 2014-2016 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/config.php";
session_start();
if (!isset($_SESSION['receiver']))
{
http_response_code(400);
die();
}
$receiver = $_SESSION['receiver'];
$amount_value = intval($_SESSION['amount_value']);
$amount_fraction = intval($_SESSION['amount_fraction']);
$currency = $_SESSION['currency'];
// generate a front-end transaction id.
// In production context, we might want to
// record this value somewhere together
// with the rest of the contract data.
$transaction_id = rand(0, 2<<40);
// Human-readable description of this deal
$desc = "Donation to " . $receiver;
// Take a timestamp
$now = new DateTime('now');
// Include all information so we can
// restore the contract without storing it
$fulfillment_url = url_rel("fulfillment.php")
. '?uuid=${H_contract}'
. '&receiver=' . urlencode($receiver)
. '&aval=' . urlencode($amount_value)
. '&afrac=' . urlencode($amount_fraction)
. '&acurr=' . urlencode($currency)
. '&tid=' . $transaction_id;
// pack the JSON for the contract
$contract = array(
'fulfillment_url' => $fulfillment_url,
'amount' => array(
'value' => $amount_value,
'fraction' => $amount_fraction,
'currency' => $currency
),
'max_fee' => array(
'value' => 3,
'fraction' => 01010,
'currency' => $currency
),
'transaction_id' => $transaction_id,
'products' => array(
array(
'description' => $desc,
'quantity' => 1,
'price' => array (
'value' => $amount_value,
'fraction' => $amount_fraction,
'currency' => $currency
),
'product_id' => $p_id,
)
),
'timestamp' => "/Date(" . $now->getTimestamp() . ")/",
'expiry' => "/Date(" . $now->add(new DateInterval('P2W'))->getTimestamp() . ")/",
'refund_deadline' => "/Date(" . $now->add(new DateInterval('P3M'))->getTimestamp() . ")/",
'merchant' => array(
'name' => 'Kudos Inc.'
)
);
$json = json_encode(array(
'contract' => $contract
), JSON_PRETTY_PRINT);
$url = url_join("http://".$_SERVER["HTTP_HOST"], "backend/contract");
$req = new http\Client\Request("POST",
$url,
array ("Content-Type" => "application/json"));
$req->getBody()->append($json);
// 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)
{
echo json_encode(array(
'error' => "internal error",
'hint' => "backend indicated error",
'detail' => $resp->body->toString()
), JSON_PRETTY_PRINT);
}
else
{
$got_json = json_decode($resp->body->toString(), true);
$hc = $got_json["H_contract"];
$payments = &pull($_SESSION, "payments", array());
$payments[$hc] = array(
'receiver' => $receiver,
);
echo json_encode ($got_json, JSON_PRETTY_PRINT);
}
?>
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