django-orchestra/orchestra/apps/payments/models.py

136 lines
4.3 KiB
Python

from django.core.exceptions import ValidationError
from django.db import models
from django.utils import timezone
from django.utils.functional import cached_property
from django.utils.translation import ugettext_lazy as _
from jsonfield import JSONField
from orchestra.core import accounts
from orchestra.models.queryset import group_by
from . import settings
from .methods import PaymentMethod
class PaymentSourcesQueryset(models.QuerySet):
def get_default(self):
return self.filter(is_active=True).first()
class PaymentSource(models.Model):
account = models.ForeignKey('accounts.Account', verbose_name=_("account"),
related_name='paymentsources')
method = models.CharField(_("method"), max_length=32,
choices=PaymentMethod.get_plugin_choices())
data = JSONField(_("data"))
is_active = models.BooleanField(_("is active"), default=True)
objects = PaymentSourcesQueryset.as_manager()
def __unicode__(self):
return "%s (%s)" % (self.label, self.method_class.verbose_name)
@cached_property
def method_class(self):
return PaymentMethod.get_plugin(self.method)
@cached_property
def label(self):
return self.method_class().get_label(self.data)
@cached_property
def number(self):
return self.method_class().get_number(self.data)
def get_bill_context(self):
method = self.method_class()
return {
'message': method.get_bill_message(self),
}
def get_due_delta(self):
return self.method_class().due_delta
class TransactionQuerySet(models.QuerySet):
group_by = group_by
def create(self, **kwargs):
source = kwargs.get('source')
if source is None or not hasattr(source.method_class, 'process'):
# Manual payments don't need processing
kwargs['state']=self.model.WAITTING_CONFIRMATION
return super(TransactionQuerySet, self).create(**kwargs)
# TODO lock transaction in waiting confirmation
class Transaction(models.Model):
WAITTING_PROCESSING = 'WAITTING_PROCESSING' # CREATED
WAITTING_CONFIRMATION = 'WAITTING_CONFIRMATION' # PROCESSED
EXECUTED = 'EXECUTED'
SECURED = 'SECURED'
REJECTED = 'REJECTED'
STATES = (
(WAITTING_PROCESSING, _("Waitting processing")),
(WAITTING_CONFIRMATION, _("Waitting confirmation")),
(EXECUTED, _("Executed")),
(SECURED, _("Secured")),
(REJECTED, _("Rejected")),
)
objects = TransactionQuerySet.as_manager()
bill = models.ForeignKey('bills.bill', verbose_name=_("bill"),
related_name='transactions')
source = models.ForeignKey(PaymentSource, null=True, blank=True,
verbose_name=_("source"), related_name='transactions')
process = models.ForeignKey('payments.TransactionProcess', null=True,
blank=True, verbose_name=_("process"), related_name='transactions')
state = models.CharField(_("state"), max_length=32, choices=STATES,
default=WAITTING_PROCESSING)
amount = models.DecimalField(_("amount"), max_digits=12, decimal_places=2)
currency = models.CharField(max_length=10, default=settings.PAYMENT_CURRENCY)
created_on = models.DateTimeField(auto_now_add=True)
modified_on = models.DateTimeField(auto_now=True)
def __unicode__(self):
return "Transaction {}".format(self.id)
@property
def account(self):
return self.bill.account
def mark_as_executed(self):
self.state = self.EXECUTED
self.save()
def mark_as_secured(self):
self.state = self.SECURED
# TODO think carefully about bill feedback
self.bill.mark_as_paid()
self.save()
def mark_as_rejected(self):
self.state = self.REJECTED
# TODO bill feedback
self.save()
class TransactionProcess(models.Model):
"""
Stores arbitrary data generated by payment methods while processing transactions
"""
data = JSONField(_("data"), blank=True)
file = models.FileField(_("file"), blank=True)
created_at = models.DateTimeField(_("created at"), auto_now_add=True)
class Meta:
verbose_name_plural = _("Transaction processes")
def __unicode__(self):
return str(self.id)
accounts.register(PaymentSource)
accounts.register(Transaction)