345 lines
13 KiB
Python
345 lines
13 KiB
Python
from django.db import models
|
|
from django.db.models import Q
|
|
from django.db.models.signals import pre_delete, post_delete, post_save
|
|
from django.dispatch import receiver
|
|
from django.contrib.admin.models import LogEntry
|
|
from django.contrib.contenttypes import generic
|
|
from django.contrib.contenttypes.models import ContentType
|
|
from django.core.validators import ValidationError
|
|
from django.utils import timezone
|
|
from django.utils.functional import cached_property
|
|
from django.utils.translation import ugettext_lazy as _
|
|
|
|
from orchestra.core import caches, services, accounts
|
|
from orchestra.models import queryset
|
|
from orchestra.utils.apps import autodiscover
|
|
|
|
from . import settings, helpers
|
|
from .handlers import ServiceHandler
|
|
|
|
|
|
autodiscover('handlers')
|
|
|
|
|
|
class Service(models.Model):
|
|
NEVER = 'NEVER'
|
|
MONTHLY = 'MONTHLY'
|
|
ANUAL = 'ANUAL'
|
|
TEN_DAYS = 'TEN_DAYS'
|
|
ONE_MONTH = 'ONE_MONTH'
|
|
ALWAYS = 'ALWAYS'
|
|
ON_REGISTER = 'ON_REGISTER'
|
|
FIXED_DATE = 'ON_FIXED_DATE'
|
|
BILLING_PERIOD = 'BILLING_PERIOD'
|
|
REGISTER_OR_RENEW = 'REGISTER_OR_RENEW'
|
|
CONCURRENT = 'CONCURRENT'
|
|
NOTHING = 'NOTHING'
|
|
DISCOUNT = 'DISCOUNT'
|
|
REFOUND = 'REFOUND'
|
|
PREPAY = 'PREPAY'
|
|
POSTPAY = 'POSTPAY'
|
|
BEST_PRICE = 'BEST_PRICE'
|
|
PROGRESSIVE_PRICE = 'PROGRESSIVE_PRICE'
|
|
MATCH_PRICE = 'MATCH_PRICE'
|
|
|
|
description = models.CharField(_("description"), max_length=256, unique=True)
|
|
content_type = models.ForeignKey(ContentType, verbose_name=_("content type"))
|
|
match = models.CharField(_("match"), max_length=256, blank=True)
|
|
handler_type = models.CharField(_("handler"), max_length=256, blank=True,
|
|
help_text=_("Handler used for processing this Service. A handler "
|
|
"enables customized behaviour far beyond what options "
|
|
"here allow to."),
|
|
choices=ServiceHandler.get_plugin_choices())
|
|
is_active = models.BooleanField(_("is active"), default=True)
|
|
# Billing
|
|
billing_period = models.CharField(_("billing period"), max_length=16,
|
|
help_text=_("Renewal period for recurring invoicing"),
|
|
choices=(
|
|
(NEVER, _("One time service")),
|
|
(MONTHLY, _("Monthly billing")),
|
|
(ANUAL, _("Anual billing")),
|
|
),
|
|
default=ANUAL)
|
|
billing_point = models.CharField(_("billing point"), max_length=16,
|
|
help_text=_("Reference point for calculating the renewal date "
|
|
"on recurring invoices"),
|
|
choices=(
|
|
(ON_REGISTER, _("Registration date")),
|
|
(FIXED_DATE, _("Fixed billing date")),
|
|
),
|
|
default=FIXED_DATE)
|
|
delayed_billing = models.CharField(_("delayed billing"), max_length=16,
|
|
help_text=_("Period in which this service will be ignored for billing"),
|
|
choices=(
|
|
(NEVER, _("No delay (inmediate billing)")),
|
|
(TEN_DAYS, _("Ten days")),
|
|
(ONE_MONTH, _("One month")),
|
|
),
|
|
default=ONE_MONTH)
|
|
is_fee = models.BooleanField(_("is fee"), default=False,
|
|
help_text=_("Designates whether this service should be billed as "
|
|
" membership fee or not"))
|
|
# Pricing
|
|
metric = models.CharField(_("metric"), max_length=256, blank=True,
|
|
help_text=_("Metric used to compute the pricing rate. "
|
|
"Number of orders is used when left blank."))
|
|
tax = models.IntegerField(_("tax"), choices=settings.ORDERS_SERVICE_TAXES,
|
|
default=settings.ORDERS_SERVICE_DEFAUL_TAX)
|
|
pricing_period = models.CharField(_("pricing period"), max_length=16,
|
|
help_text=_("Period used for calculating the metric used on the "
|
|
"pricing rate"),
|
|
choices=(
|
|
(BILLING_PERIOD, _("Same as billing period")),
|
|
(MONTHLY, _("Monthly data")),
|
|
(ANUAL, _("Anual data")),
|
|
),
|
|
default=BILLING_PERIOD)
|
|
rate_algorithm = models.CharField(_("rate algorithm"), max_length=16,
|
|
help_text=_("Algorithm used to interprete the rating table"),
|
|
choices=(
|
|
(BEST_PRICE, _("Best price")),
|
|
(PROGRESSIVE_PRICE, _("Progressive price")),
|
|
(MATCH_PRICE, _("Match price")),
|
|
),
|
|
default=BEST_PRICE)
|
|
orders_effect = models.CharField(_("orders effect"), max_length=16,
|
|
help_text=_("Defines the lookup behaviour when using orders for "
|
|
"the pricing rate computation of this service."),
|
|
choices=(
|
|
(REGISTER_OR_RENEW, _("Register or renew events")),
|
|
(CONCURRENT, _("Active at every given time")),
|
|
),
|
|
default=CONCURRENT)
|
|
on_cancel = models.CharField(_("on cancel"), max_length=16,
|
|
help_text=_("Defines the cancellation behaviour of this service"),
|
|
choices=(
|
|
(NOTHING, _("Nothing")),
|
|
(DISCOUNT, _("Discount")),
|
|
(REFOUND, _("Refound")),
|
|
),
|
|
default=DISCOUNT)
|
|
# TODO remove, orders are not disabled (they are cancelled user.is_active)
|
|
# on_disable = models.CharField(_("on disable"), max_length=16,
|
|
# help_text=_("Defines the behaviour of this service when disabled"),
|
|
# choices=(
|
|
# (NOTHING, _("Nothing")),
|
|
# (DISCOUNT, _("Discount")),
|
|
# (REFOUND, _("Refound")),
|
|
# ),
|
|
# default=DISCOUNT)
|
|
# on_register = models.CharField(_("on register"), max_length=16,
|
|
# help_text=_("Defines the behaviour of this service on registration"),
|
|
# choices=(
|
|
# (NOTHING, _("Nothing")),
|
|
# (DISCOUNT, _("Discount (fixed BP)")),
|
|
# ),
|
|
# default=DISCOUNT)
|
|
payment_style = models.CharField(_("payment style"), max_length=16,
|
|
help_text=_("Designates whether this service should be paid after "
|
|
"consumtion (postpay/on demand) or prepaid"),
|
|
choices=(
|
|
(PREPAY, _("Prepay")),
|
|
(POSTPAY, _("Postpay (on demand)")),
|
|
),
|
|
default=PREPAY)
|
|
trial_period = models.CharField(_("trial period"), max_length=16,
|
|
help_text=_("Period in which no charge will be issued"),
|
|
choices=(
|
|
(NEVER, _("No trial")),
|
|
(TEN_DAYS, _("Ten days")),
|
|
(ONE_MONTH, _("One month")),
|
|
),
|
|
default=NEVER)
|
|
refound_period = models.CharField(_("refound period"), max_length=16,
|
|
help_text=_("Period in which automatic refound will be performed on "
|
|
"service cancellation"),
|
|
choices=(
|
|
(NEVER, _("Never refound")),
|
|
(TEN_DAYS, _("Ten days")),
|
|
(ONE_MONTH, _("One month")),
|
|
(ALWAYS, _("Always refound")),
|
|
),
|
|
default=ONE_MONTH)
|
|
|
|
def __unicode__(self):
|
|
return self.description
|
|
|
|
@classmethod
|
|
def get_services(cls, instance):
|
|
cache = caches.get_request_cache()
|
|
ct = ContentType.objects.get_for_model(instance)
|
|
services = cache.get(ct)
|
|
if services is None:
|
|
services = cls.objects.filter(content_type=ct, is_active=True)
|
|
cache.set(ct, services)
|
|
return services
|
|
|
|
# FIXME some times caching is nasty, do we really have to? make get_plugin more efficient?
|
|
# @property
|
|
@cached_property
|
|
def handler(self):
|
|
""" Accessor of this service handler instance """
|
|
if self.handler_type:
|
|
return ServiceHandler.get_plugin(self.handler_type)(self)
|
|
return ServiceHandler(self)
|
|
|
|
def clean(self):
|
|
content_type = self.handler.get_content_type()
|
|
if self.content_type != content_type:
|
|
msg =_("Content type must be equal to '%s'." % str(content_type))
|
|
raise ValidationError(msg)
|
|
if not self.match:
|
|
msg =_("Match should be provided")
|
|
raise ValidationError(msg)
|
|
try:
|
|
obj = content_type.model_class().objects.all()[0]
|
|
except IndexError:
|
|
pass
|
|
else:
|
|
attr = None
|
|
try:
|
|
bool(self.handler.matches(obj))
|
|
except Exception as exception:
|
|
attr = "Matches"
|
|
try:
|
|
metric = self.handler.get_metric(obj)
|
|
if metric is not None:
|
|
int(metric)
|
|
except Exception as exception:
|
|
attr = "Get metric"
|
|
if attr is not None:
|
|
name = type(exception).__name__
|
|
message = exception.message
|
|
msg = "{0} {1}: {2}".format(attr, name, message)
|
|
raise ValidationError(msg)
|
|
|
|
|
|
class OrderQuerySet(models.QuerySet):
|
|
group_by = queryset.group_by
|
|
|
|
def bill(self, **options):
|
|
for account, services in self.group_by('account_id', 'service_id'):
|
|
bill_lines = []
|
|
for service, orders in services:
|
|
lines = helpers.create_bill_lines(service, orders, **options)
|
|
bill_lines.extend(lines)
|
|
helpers.create_bills(account, bill_lines)
|
|
|
|
def get_related(self):
|
|
pass
|
|
|
|
def by_object(self, obj, **kwargs):
|
|
ct = ContentType.objects.get_for_model(obj)
|
|
return self.filter(object_id=obj.pk, content_type=ct, **kwargs)
|
|
|
|
def active(self, **kwargs):
|
|
""" return active orders """
|
|
return self.filter(
|
|
Q(cancelled_on__isnull=True) | Q(cancelled_on__gt=timezone.now())
|
|
).filter(**kwargs)
|
|
|
|
def inactive(self, **kwargs):
|
|
""" return inactive orders """
|
|
return self.filter(cancelled_on__lt=timezone.now(), **kwargs)
|
|
|
|
|
|
class Order(models.Model):
|
|
account = models.ForeignKey('accounts.Account', verbose_name=_("account"),
|
|
related_name='orders')
|
|
content_type = models.ForeignKey(ContentType)
|
|
object_id = models.PositiveIntegerField(null=True)
|
|
service = models.ForeignKey(Service, verbose_name=_("service"),
|
|
related_name='orders')
|
|
registered_on = models.DateTimeField(_("registered on"), auto_now_add=True)
|
|
cancelled_on = models.DateTimeField(_("cancelled on"), null=True, blank=True)
|
|
billed_on = models.DateTimeField(_("billed on"), null=True, blank=True)
|
|
billed_until = models.DateTimeField(_("billed until"), null=True, blank=True)
|
|
ignore = models.BooleanField(_("ignore"), default=False)
|
|
description = models.TextField(_("description"), blank=True)
|
|
|
|
content_object = generic.GenericForeignKey()
|
|
objects = OrderQuerySet.as_manager()
|
|
|
|
def __unicode__(self):
|
|
return str(self.service)
|
|
|
|
def update(self):
|
|
instance = self.content_object
|
|
handler = self.service.handler
|
|
if handler.metric:
|
|
metric = handler.get_metric(instance)
|
|
if metric is not None:
|
|
MetricStorage.store(self, metric)
|
|
description = "{}: {}".format(handler.description, str(instance))
|
|
if self.description != description:
|
|
self.description = description
|
|
self.save()
|
|
|
|
@classmethod
|
|
def update_orders(cls, instance):
|
|
for service in Service.get_services(instance):
|
|
orders = Order.objects.by_object(instance, service=service).active()
|
|
if service.handler.matches(instance):
|
|
if not orders:
|
|
account_id = getattr(instance, 'account_id', instance.pk)
|
|
order = cls.objects.create(content_object=instance,
|
|
service=service, account_id=account_id)
|
|
else:
|
|
order = orders.get()
|
|
order.update()
|
|
elif orders:
|
|
orders.get().cancel()
|
|
|
|
def cancel(self):
|
|
self.cancelled_on = timezone.now()
|
|
self.save()
|
|
|
|
|
|
class MetricStorage(models.Model):
|
|
order = models.ForeignKey(Order, verbose_name=_("order"))
|
|
value = models.BigIntegerField(_("value"))
|
|
created_on = models.DateTimeField(_("created on"), auto_now_add=True)
|
|
updated_on = models.DateTimeField(_("updated on"), auto_now=True)
|
|
|
|
class Meta:
|
|
get_latest_by = 'created_on'
|
|
|
|
def __unicode__(self):
|
|
return unicode(self.order)
|
|
|
|
@classmethod
|
|
def store(cls, order, value):
|
|
try:
|
|
metric = cls.objects.filter(order=order).latest()
|
|
except cls.DoesNotExist:
|
|
cls.objects.create(order=order, value=value)
|
|
else:
|
|
if metric.value != value:
|
|
cls.objects.create(order=order, value=value)
|
|
else:
|
|
metric.save()
|
|
|
|
|
|
@receiver(pre_delete, dispatch_uid="orders.cancel_orders")
|
|
def cancel_orders(sender, **kwargs):
|
|
if sender in services:
|
|
instance = kwargs['instance']
|
|
for order in Order.objects.by_object(instance).active():
|
|
order.cancel()
|
|
|
|
|
|
@receiver(post_save, dispatch_uid="orders.update_orders")
|
|
@receiver(post_delete, dispatch_uid="orders.update_orders_post_delete")
|
|
def update_orders(sender, **kwargs):
|
|
if sender not in [MetricStorage, LogEntry, Order, Service]:
|
|
instance = kwargs['instance']
|
|
if instance.pk:
|
|
# post_save
|
|
Order.update_orders(instance)
|
|
related = helpers.get_related_objects(instance)
|
|
if related:
|
|
Order.update_orders(related)
|
|
|
|
|
|
accounts.register(Order)
|