import logging
import os
from Crypto.PublicKey import RSA
from dateutil.relativedelta import relativedelta
from django.db import models
from django.utils import timezone
from django.utils.functional import cached_property
from datacenterlight.models import VMPricing, VMTemplate
from membership.models import StripeCustomer, CustomUser
from utils.models import BillingAddress
from utils.mixins import AssignPermissionsMixin
from utils.stripe_utils import StripeUtils
logger = logging.getLogger(__name__)
class HostingPlan(models.Model):
disk_size = models.FloatField(default=0.0)
cpu_cores = models.FloatField(default=0.0)
memory = models.FloatField(default=0.0)
def serialize(self):
return {
'id': self.id,
'cpu': self.cpu_cores,
'memory': self.memory,
'disk_size': self.disk_size,
'price': self.price(),
}
@classmethod
def get_serialized_configs(cls):
return [cfg.serialize()
for cfg in cls.objects.all()]
def price(self):
price = self.disk_size * 0.6
price += self.cpu_cores * 5
price += self.memory * 2
return price
class OrderDetail(AssignPermissionsMixin, models.Model):
vm_template = models.ForeignKey(
VMTemplate, blank=True, null=True, default=None,
on_delete=models.SET_NULL
)
cores = models.IntegerField(default=0)
memory = models.IntegerField(default=0)
hdd_size = models.IntegerField(default=0)
ssd_size = models.IntegerField(default=0)
def __str__(self):
return "%s - %s, %s cores, %s GB RAM, %s GB SSD" % (
self.vm_template.name, self.vm_template.vm_type, self.cores,
self.memory, self.ssd_size
)
class HostingOrder(AssignPermissionsMixin, models.Model):
ORDER_APPROVED_STATUS = 'Approved'
ORDER_DECLINED_STATUS = 'Declined'
vm_id = models.IntegerField(default=0)
customer = models.ForeignKey(StripeCustomer)
billing_address = models.ForeignKey(BillingAddress)
created_at = models.DateTimeField(auto_now_add=True)
approved = models.BooleanField(default=False)
last4 = models.CharField(max_length=4)
cc_brand = models.CharField(max_length=10)
stripe_charge_id = models.CharField(max_length=100, null=True)
price = models.FloatField()
subscription_id = models.CharField(max_length=100, null=True)
vm_pricing = models.ForeignKey(VMPricing)
order_detail = models.ForeignKey(
OrderDetail, null=True, blank=True, default=None,
on_delete=models.SET_NULL
)
permissions = ('view_hostingorder',)
class Meta:
permissions = (
('view_hostingorder', 'View Hosting Order'),
)
def __str__(self):
return "%s" % (self.id)
@cached_property
def status(self):
return self.ORDER_APPROVED_STATUS if self.approved else self.ORDER_DECLINED_STATUS
@classmethod
def create(cls, price=None, vm_id=0, customer=None,
billing_address=None, vm_pricing=None):
instance = cls.objects.create(
price=price,
vm_id=vm_id,
customer=customer,
billing_address=billing_address,
vm_pricing=vm_pricing
)
instance.assign_permissions(customer.user)
return instance
def set_approved(self):
self.approved = True
self.save()
def set_stripe_charge(self, stripe_charge):
self.stripe_charge_id = stripe_charge.id
self.last4 = stripe_charge.source.last4
self.cc_brand = stripe_charge.source.brand
self.save()
def set_subscription_id(self, subscription_id, cc_details):
"""
When creating a Stripe subscription, we have subscription id.
We store this in the subscription_id field.
This method sets the subscription id
and the last4 and credit card brands used for this order.
:param subscription_id: Stripe's subscription id
:param cc_details: A dict containing card details
{last4, brand}
:return:
"""
self.subscription_id = subscription_id
self.last4 = cc_details.get('last4')
self.cc_brand = cc_details.get('brand')
self.save()
def get_cc_data(self):
return {
'last4': self.last4,
'cc_brand': self.cc_brand,
} if self.last4 and self.cc_brand else None
class UserHostingKey(models.Model):
user = models.ForeignKey(CustomUser)
public_key = models.TextField()
private_key = models.FileField(upload_to='private_keys', blank=True)
created_at = models.DateTimeField(auto_now_add=True)
name = models.CharField(max_length=100)
@staticmethod
def generate_RSA(bits=2048):
'''
Generate an RSA keypair with an exponent of 65537 in PEM format
param: bits The key length in bits
Return private key and public key
'''
new_key = RSA.generate(2048, os.urandom)
public_key = new_key.publickey().exportKey("OpenSSH")
private_key = new_key.exportKey("PEM")
return private_key, public_key
@classmethod
def generate_keys(cls):
private_key, public_key = cls.generate_RSA()
# self.public_key = public_key
# self.save(update_fields=['public_key'])
return private_key, public_key
class HostingBill(AssignPermissionsMixin, models.Model):
customer = models.ForeignKey(StripeCustomer)
billing_address = models.ForeignKey(BillingAddress)
total_price = models.FloatField(default=0.0)
permissions = ('view_hostingbill',)
class Meta:
permissions = (
('view_hostingbill', 'View Hosting Bill'),
)
def __str__(self):
return "%s" % (self.customer.user.email)
@classmethod
def create(cls, customer=None, billing_address=None):
instance = cls.objects.create(customer=customer,
billing_address=billing_address)
return instance
class VMDetail(models.Model):
user = models.ForeignKey(CustomUser)
vm_id = models.IntegerField(default=0)
disk_size = models.FloatField(default=0.0)
cores = models.FloatField(default=0.0)
memory = models.FloatField(default=0.0)
configuration = models.CharField(default='', max_length=25)
ipv4 = models.TextField(default='')
ipv6 = models.TextField(default='')
created_at = models.DateTimeField(auto_now_add=True)
terminated_at = models.DateTimeField(null=True)
def end_date(self):
end_date = self.terminated_at if self.terminated_at else timezone.now()
months = relativedelta(end_date, self.created_at).months or 1
end_date = self.created_at + relativedelta(months=months, days=-1)
return end_date
class UserCardDetail(AssignPermissionsMixin, models.Model):
permissions = ('view_usercarddetail',)
stripe_customer = models.ForeignKey(StripeCustomer)
last4 = models.CharField(max_length=4)
brand = models.CharField(max_length=10)
card_id = models.CharField(max_length=100, blank=True, default='')
fingerprint = models.CharField(max_length=100)
exp_month = models.IntegerField(null=False)
exp_year = models.IntegerField(null=False)
preferred = models.BooleanField(default=False)
class Meta:
permissions = (
('view_usercarddetail', 'View User Card'),
)
@classmethod
def create(cls, stripe_customer=None, last4=None, brand=None,
fingerprint=None, exp_month=None, exp_year=None, card_id=None,
preferred=False):
instance = cls.objects.create(
stripe_customer=stripe_customer, last4=last4, brand=brand,
fingerprint=fingerprint, exp_month=exp_month, exp_year=exp_year,
card_id=card_id, preferred=preferred
)
instance.assign_permissions(stripe_customer.user)
return instance
@classmethod
def get_all_cards_list(cls, stripe_customer):
"""
Get all the cards of the given customer as a list
:param stripe_customer: The StripeCustomer object
:return: A list of all cards; an empty list if the customer object is
None
"""
cards_list = []
if stripe_customer is None:
return cards_list
user_card_details = UserCardDetail.objects.filter(
stripe_customer_id=stripe_customer.id
).order_by('-preferred', 'id')
for card in user_card_details:
cards_list.append({
'last4': card.last4, 'brand': card.brand, 'id': card.id,
'preferred': card.preferred
})
return cards_list
@classmethod
def get_or_create_user_card_detail(cls, stripe_customer, card_details):
"""
A method that checks if a UserCardDetail object exists already
based upon the given card_details and creates it for the given
customer if it does not exist. It returns the UserCardDetail object
matching the given card_details if it exists.
:param stripe_customer: The given StripeCustomer object to whom the
card object should belong to
:param card_details: A dictionary identifying a given card
:return: UserCardDetail object
"""
try:
if ('fingerprint' in card_details and 'exp_month' in card_details
and 'exp_year' in card_details):
card_detail = UserCardDetail.objects.get(
stripe_customer=stripe_customer,
fingerprint=card_details['fingerprint'],
exp_month=card_details['exp_month'],
exp_year=card_details['exp_year']
)
else:
raise UserCardDetail.DoesNotExist()
except UserCardDetail.DoesNotExist:
preferred = False
if 'preferred' in card_details:
preferred = card_details['preferred']
card_detail = UserCardDetail.create(
stripe_customer=stripe_customer,
last4=card_details['last4'],
brand=card_details['brand'],
fingerprint=card_details['fingerprint'],
exp_month=card_details['exp_month'],
exp_year=card_details['exp_year'],
card_id=card_details['card_id'],
preferred=preferred
)
return card_detail
@staticmethod
def set_default_card(stripe_api_cus_id, stripe_source_id):
"""
Sets the given stripe source as the default source for the given
Stripe customer
:param stripe_api_cus_id: Stripe customer id
:param stripe_source_id: The Stripe source id
:return:
"""
stripe_utils = StripeUtils()
cus_response = stripe_utils.get_customer(stripe_api_cus_id)
cu = cus_response['response_object']
cu.default_source = stripe_source_id
cu.save()
UserCardDetail.save_default_card_local(
stripe_api_cus_id, stripe_source_id
)
@staticmethod
def set_default_card_from_stripe(stripe_api_cus_id):
stripe_utils = StripeUtils()
cus_response = stripe_utils.get_customer(stripe_api_cus_id)
cu = cus_response['response_object']
default_source = cu.default_source
if default_source is not None:
UserCardDetail.save_default_card_local(
stripe_api_cus_id, default_source
)
@staticmethod
def save_default_card_local(stripe_api_cus_id, card_id):
stripe_cust = StripeCustomer.objects.get(stripe_id=stripe_api_cus_id)
user_card_detail = UserCardDetail.objects.get(
stripe_customer=stripe_cust, card_id=card_id
)
for card in stripe_cust.usercarddetail_set.all():
card.preferred = False
card.save()
user_card_detail.preferred = True
user_card_detail.save()
@staticmethod
def get_user_card_details(stripe_customer, card_details):
"""
A utility function to check whether a StripeCustomer is already
associated with the card having given details
:param stripe_customer:
:param card_details:
:return: The UserCardDetails object if it exists, None otherwise
"""
try:
ucd = UserCardDetail.objects.get(
stripe_customer=stripe_customer,
fingerprint=card_details['fingerprint'],
exp_month=card_details['exp_month'],
exp_year=card_details['exp_year']
)
return ucd
except UserCardDetail.DoesNotExist:
return None