134 lines
4.8 KiB
Python
134 lines
4.8 KiB
Python
# eopayment - online payment library
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# Copyright (C) 2011-2020 Entr'ouvert
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#
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# This program is free software: you can redistribute it and/or modify it
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# under the terms of the GNU Affero General Public License as published
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# by the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU Affero General Public License for more details.
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#
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# You should have received a copy of the GNU Affero General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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from gettext import gettext as _
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import requests
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from six.moves.urllib.parse import parse_qs, urljoin
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from .common import (CANCELLED, ERROR, PAID, URL, WAITING, PaymentCommon,
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PaymentException, PaymentResponse, ResponseError)
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__all__ = ['Payment']
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class Payment(PaymentCommon):
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'''Implements EMS API, see https://dev.online.emspay.eu/.'''
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service_url = 'https://api.online.emspay.eu/v1/'
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description = {
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'caption': 'Keyware payment backend',
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'parameters': [
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{
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'name': 'normal_return_url',
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'caption': _('Normal return URL'),
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'required': True,
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},
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{
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'name': 'automatic_return_url',
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'caption': _('Asychronous return URL'),
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'required': True,
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},
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{
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'name': 'service_url',
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'caption': _('URL of the payment service'),
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'default': service_url,
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'type': str,
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'validation': lambda x: x.startswith('https'),
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},
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{
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'name': 'api_key',
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'caption': _('API key'),
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'required': True,
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},
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],
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}
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def request(self, amount, email=None, first_name=None, last_name=None, **kwargs):
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amount = int(self.clean_amount(amount, min_amount=0.01))
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body = {
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'currency': 'EUR',
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'amount': amount,
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'return_url': self.normal_return_url,
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'webhook_url': self.automatic_return_url,
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'customer': {
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'email_address': email,
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'first_name': first_name,
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'last_name': last_name,
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}
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}
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resp = self.call_endpoint('POST', 'orders', data=body)
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return resp['id'], URL, resp['order_url']
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def response(self, query_string, **kwargs):
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fields = parse_qs(query_string, keep_blank_values=True)
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order_id = fields['order_id'][0]
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resp = self.call_endpoint('GET', 'orders/' + order_id)
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# XXX: to add accepted we need to handle the capture mode (manual or
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# delayed), see
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# https://dev.online.emspay.eu/rest-api/features/authorizations-captures-and-voiding
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status = resp['status']
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if status == 'completed':
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result = PAID
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elif status in ('new', 'processing'):
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result = WAITING
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elif status in ('cancelled', 'expired'):
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result = CANCELLED
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else:
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result = ERROR
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response = PaymentResponse(
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result=result,
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signed=True,
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bank_data=resp,
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order_id=order_id,
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transaction_id=order_id,
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bank_status=status,
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test=bool('is-test' in resp.get('flags', []))
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)
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return response
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def cancel(self, amount, bank_data, **kwargs):
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order_id = bank_data['id']
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resp = self.call_endpoint('DELETE', 'orders/' + order_id)
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status = resp['status']
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if not status == 'cancelled':
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raise ResponseError('expected "cancelled" status, got "%s" instead' % status)
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return resp
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def call_endpoint(self, method, endpoint, data=None):
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url = urljoin(self.service_url, endpoint)
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try:
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response = requests.request(method, url, auth=(self.api_key, ''), json=data)
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except requests.exceptions.RequestException as e:
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raise PaymentException('%s error on endpoint "%s": %s' % (method, endpoint, e))
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try:
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result = response.json()
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except ValueError:
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self.logger.debug('received invalid json %r', response.text)
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raise PaymentException('%s on endpoint "%s" returned invalid JSON: %s' %
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(method, endpoint, response.text))
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self.logger.debug('received "%s" with status %s', result, response.status_code)
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try:
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response.raise_for_status()
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except requests.exceptions.HTTPError as e:
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raise PaymentException(
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'%s error on endpoint "%s": %s "%s"' % (method, endpoint, e, result))
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return result
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