# -*- coding: utf-8 -*-
# This file is part of Shuup.
#
# Copyright (c) 2012-2017, Shoop Commerce Ltd. All rights reserved.
#
# This source code is licensed under the OSL-3.0 license found in the
# LICENSE file in the root directory of this source tree.
from __future__ import unicode_literals
import hmac
from django.contrib import messages
from django.db import models
from django.http.response import HttpResponse
from django.utils.timezone import now
from shuup.core.models import (
FixedCostBehaviorComponent, PaymentProcessor, ServiceChoice,
WaivingCostBehaviorComponent
)
from shuup.utils.excs import Problem
HTML_TEMPLATE = u"""
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<style>body{background:%(bg_color)s;color:%(fg_color)s;}</style>
</head>
<body>
<h1>%(title)s</h1>
<ul>
%(urls)s
</li>
</body>
</html>
""".strip()
[docs]class PseudoPaymentProcessor(PaymentProcessor):
bg_color = models.CharField(
max_length=20, blank=True, default="white",
verbose_name="Payment Page Background Color")
fg_color = models.CharField(
max_length=20, blank=True, default="black",
verbose_name="Payment Page Text Color")
[docs] def get_service_choices(self):
return [
ServiceChoice('normal', "Pseudo payment"),
ServiceChoice('caps', "Pseudo payment CAPS"),
]
def _create_service(self, choice_identifier, **kwargs):
service = super(PseudoPaymentProcessor, self)._create_service(
choice_identifier, **kwargs)
service.behavior_components.add(
WaivingCostBehaviorComponent.objects.create(
price_value=10, waive_limit_value=1000))
if choice_identifier == 'caps':
service.behavior_components.add(
FixedCostBehaviorComponent.objects.create(
price_value=50, description="UPPERCASING EXTRA FEE"))
return service
[docs] def compute_pseudo_mac(self, order):
return hmac.new(key=b"PseudoPayment", msg=order.key.encode("utf-8")).hexdigest()
[docs] def get_payment_process_response(self, service, order, urls):
transform = self._get_text_transformer(service)
mac = self.compute_pseudo_mac(order)
url_list = [
("Pay", urls.payment_url),
("Cancel payment", urls.cancel_url),
("Return", urls.return_url),
]
urls_html = "\n".join(
"<li><a href=\"%s?mac=%s\">%s</a></li>" % (
url, mac, transform(title))
for (title, url) in url_list)
html = HTML_TEMPLATE % {
"urls": urls_html,
"title": transform("Shuup Pseudo Payment Service"),
"bg_color": self.bg_color or "white",
"fg_color": self.fg_color or "black",
}
return HttpResponse(html)
[docs] def process_payment_return_request(self, service, order, request):
transform = self._get_text_transformer(service)
mac = self.compute_pseudo_mac(order)
if request.GET.get("mac") != mac:
raise Problem(u"Invalid MAC.")
if not order.is_paid():
order.create_payment(
order.taxful_total_price,
payment_identifier="Pseudo-%s" % now().isoformat(),
description=transform("Shuup Pseudo Payment Service Payment")
)
msg = transform(
"Pseudo Payment successfully processed the request.")
messages.success(request, msg)
def _get_text_transformer(self, service):
choice = service.choice_identifier
if choice == 'caps':
return type("").upper
elif choice == 'normal':
return type("")
else:
raise ValueError('Invalid service choice: %r' % choice)