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payment.py
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payment.py
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# -*- coding: utf-8 -*-
# Part of Odoo. See LICENSE file for full copyright and licensing details.
import logging
import uuid
from hashlib import md5
from werkzeug import urls
from odoo import api, fields, models, _
from odoo.addons.payment.models.payment_acquirer import ValidationError
from odoo.tools.float_utils import float_compare
_logger = logging.getLogger(__name__)
class PaymentAcquirerPayulatam(models.Model):
_inherit = 'payment.acquirer'
provider = fields.Selection(selection_add=[
('payulatam', 'PayU Latam')
], ondelete={'payulatam': 'set default'})
payulatam_merchant_id = fields.Char(string="PayU Latam Merchant ID", required_if_provider='payulatam', groups='base.group_user')
payulatam_account_id = fields.Char(string="PayU Latam Account ID", required_if_provider='payulatam', groups='base.group_user')
payulatam_api_key = fields.Char(string="PayU Latam API Key", required_if_provider='payulatam', groups='base.group_user')
def _get_payulatam_urls(self, environment):
""" PayUlatam URLs"""
if environment == 'prod':
return 'https://checkout.payulatam.com/ppp-web-gateway-payu/'
return 'https://sandbox.checkout.payulatam.com/ppp-web-gateway-payu/'
def _payulatam_generate_sign(self, inout, values):
if inout not in ('in', 'out'):
raise Exception("Type must be 'in' or 'out'")
if inout == 'in':
data_string = ('~').join((self.payulatam_api_key, self.payulatam_merchant_id, values['referenceCode'],
str(values['amount']), values['currency']))
else:
data_string = ('~').join((self.payulatam_api_key, self.payulatam_merchant_id, values['referenceCode'],
str(float(values.get('TX_VALUE'))), values['currency'], values.get('transactionState')))
return md5(data_string.encode('utf-8')).hexdigest()
def payulatam_form_generate_values(self, values):
base_url = self.env['ir.config_parameter'].sudo().get_param('web.base.url')
tx = self.env['payment.transaction'].search([('reference', '=', values.get('reference'))])
# payulatam will not allow any payment twise even if payment was failed last time.
# so, replace reference code if payment is not done or pending.
if tx.state not in ['done', 'pending']:
tx.reference = str(uuid.uuid4())
payulatam_values = dict(
values,
merchantId=self.payulatam_merchant_id,
accountId=self.payulatam_account_id,
description=values.get('reference'),
referenceCode=tx.reference,
amount=values['amount'],
tax='0', # This is the transaction VAT. If VAT zero is sent the system, 19% will be applied automatically. It can contain two decimals. Eg 19000.00. In the where you do not charge VAT, it should should be set as 0.
taxReturnBase='0',
currency=values['currency'].name,
buyerEmail=values['partner_email'],
responseUrl=urls.url_join(base_url, '/payment/payulatam/response'),
)
payulatam_values['signature'] = self._payulatam_generate_sign("in", payulatam_values)
return payulatam_values
def payulatam_get_form_action_url(self):
self.ensure_one()
environment = 'prod' if self.state == 'enabled' else 'test'
return self._get_payulatam_urls(environment)
class PaymentTransactionPayulatam(models.Model):
_inherit = 'payment.transaction'
@api.model
def _payulatam_form_get_tx_from_data(self, data):
""" Given a data dict coming from payulatam, verify it and find the related
transaction record. """
reference, txnid, sign = data.get('referenceCode'), data.get('transactionId'), data.get('signature')
if not reference or not txnid or not sign:
raise ValidationError(_('PayU Latam: received data with missing reference (%s) or transaction id (%s) or sign (%s)') % (reference, txnid, sign))
transaction = self.search([('reference', '=', reference)])
if not transaction:
error_msg = (_('PayU Latam: received data for reference %s; no order found') % (reference))
raise ValidationError(error_msg)
elif len(transaction) > 1:
error_msg = (_('PayU Latam: received data for reference %s; multiple orders found') % (reference))
raise ValidationError(error_msg)
# verify shasign
sign_check = transaction.acquirer_id._payulatam_generate_sign('out', data)
if sign_check.upper() != sign.upper():
raise ValidationError(('PayU Latam: invalid sign, received %s, computed %s, for data %s') % (sign, sign_check, data))
return transaction
def _payulatam_form_get_invalid_parameters(self, data):
invalid_parameters = []
if self.acquirer_reference and data.get('transactionId') != self.acquirer_reference:
invalid_parameters.append(('Reference code', data.get('transactionId'), self.acquirer_reference))
if float_compare(float(data.get('TX_VALUE', '0.0')), self.amount, 2) != 0:
invalid_parameters.append(('Amount', data.get('TX_VALUE'), '%.2f' % self.amount))
if data.get('merchantId') != self.acquirer_id.payulatam_merchant_id:
invalid_parameters.append(('Merchant Id', data.get('merchantId'), self.acquirer_id.payulatam_merchant_id))
return invalid_parameters
def _payulatam_form_validate(self, data):
self.ensure_one()
status = data.get('lapTransactionState') or data.find('transactionResponse').find('state').text
res = {
'acquirer_reference': data.get('transactionId') or data.find('transactionResponse').find('transactionId').text,
'state_message': data.get('message') or ""
}
if status == 'APPROVED':
_logger.info('Validated PayU Latam payment for tx %s: set as done' % (self.reference))
res.update(state='done', date=fields.Datetime.now())
self._set_transaction_done()
self.write(res)
self.execute_callback()
return True
elif status == 'PENDING':
_logger.info('Received notification for PayU Latam payment %s: set as pending' % (self.reference))
res.update(state='pending')
self._set_transaction_pending()
return self.write(res)
elif status in ['EXPIRED', 'DECLINED']:
_logger.info('Received notification for PayU Latam payment %s: set as Cancel' % (self.reference))
res.update(state='cancel')
self._set_transaction_cancel()
return self.write(res)
else:
error = 'Received unrecognized status for PayU Latam payment %s: %s, set as error' % (self.reference, status)
_logger.info(error)
res.update(state='cancel', state_message=error)
self._set_transaction_cancel()
return self.write(res)