630 lines
23 KiB
Python
630 lines
23 KiB
Python
import json
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import logging
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import os
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import pytz
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from Crypto.PublicKey import RSA
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from dateutil.relativedelta import relativedelta
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from datetime import datetime
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from django.db import models
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from django.utils import timezone
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from django.utils.functional import cached_property
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from datacenterlight.models import VMPricing, VMTemplate
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from membership.models import StripeCustomer, CustomUser
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from utils.mixins import AssignPermissionsMixin
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from utils.models import BillingAddress
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from utils.stripe_utils import StripeUtils
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logger = logging.getLogger(__name__)
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class HostingPlan(models.Model):
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disk_size = models.FloatField(default=0.0)
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cpu_cores = models.FloatField(default=0.0)
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memory = models.FloatField(default=0.0)
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def serialize(self):
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return {
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'id': self.id,
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'cpu': self.cpu_cores,
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'memory': self.memory,
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'disk_size': self.disk_size,
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'price': self.price(),
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}
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@classmethod
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def get_serialized_configs(cls):
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return [cfg.serialize()
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for cfg in cls.objects.all()]
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def price(self):
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price = self.disk_size * 0.6
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price += self.cpu_cores * 5
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price += self.memory * 2
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return price
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class OrderDetail(AssignPermissionsMixin, models.Model):
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vm_template = models.ForeignKey(
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VMTemplate, blank=True, null=True, default=None,
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on_delete=models.SET_NULL
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)
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cores = models.IntegerField(default=0)
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memory = models.IntegerField(default=0)
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hdd_size = models.IntegerField(default=0)
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ssd_size = models.IntegerField(default=0)
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def __str__(self):
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return "Not available" if self.vm_template is None else (
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"%s - %s, %s cores, %s GB RAM, %s GB SSD" % (
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self.vm_template.name, self.vm_template.vm_type, self.cores,
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self.memory, self.ssd_size
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)
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)
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class GenericProduct(AssignPermissionsMixin, models.Model):
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permissions = ('view_genericproduct',)
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product_name = models.CharField(max_length=128, default="")
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product_slug = models.SlugField(
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unique=True,
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help_text=(
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'An mandatory unique slug for the product'
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)
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)
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product_description = models.CharField(max_length=500, default="")
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created_at = models.DateTimeField(auto_now_add=True)
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product_price = models.DecimalField(max_digits=6, decimal_places=2)
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product_vat = models.DecimalField(max_digits=6, decimal_places=4, default=0)
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product_is_subscription = models.BooleanField(default=True)
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def __str__(self):
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return self.product_name
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def get_actual_price(self):
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return round(
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self.product_price + (self.product_price * self.product_vat), 2
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)
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class HostingOrder(AssignPermissionsMixin, models.Model):
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ORDER_APPROVED_STATUS = 'Approved'
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ORDER_DECLINED_STATUS = 'Declined'
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vm_id = models.IntegerField(default=0)
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customer = models.ForeignKey(StripeCustomer)
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billing_address = models.ForeignKey(BillingAddress)
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created_at = models.DateTimeField(auto_now_add=True)
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approved = models.BooleanField(default=False)
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last4 = models.CharField(max_length=4)
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cc_brand = models.CharField(max_length=128)
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stripe_charge_id = models.CharField(max_length=100, null=True)
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price = models.FloatField()
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subscription_id = models.CharField(max_length=100, null=True)
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vm_pricing = models.ForeignKey(VMPricing)
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order_detail = models.ForeignKey(
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OrderDetail, null=True, blank=True, default=None,
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on_delete=models.SET_NULL
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)
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generic_product = models.ForeignKey(
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GenericProduct, null=True, blank=True, default=None,
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on_delete=models.SET_NULL
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)
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generic_payment_description = models.CharField(
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max_length=500, null=True
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)
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permissions = ('view_hostingorder',)
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class Meta:
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permissions = (
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('view_hostingorder', 'View Hosting Order'),
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)
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def __str__(self):
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hosting_order_str = ("Order Nr: #{} - VM_ID: {} - {} - {} - "
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"Specs: {} - Price: {}").format(
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self.id, self.vm_id, self.customer.user.email, self.created_at,
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self.order_detail, self.price
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)
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if self.generic_product_id is not None:
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hosting_order_str += " - Generic Payment"
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if self.stripe_charge_id is not None:
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hosting_order_str += " - One time charge"
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else:
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hosting_order_str += " - Recurring"
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return hosting_order_str
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@cached_property
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def status(self):
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return self.ORDER_APPROVED_STATUS if self.approved else self.ORDER_DECLINED_STATUS
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@classmethod
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def create(cls, price=None, vm_id=0, customer=None,
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billing_address=None, vm_pricing=None):
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instance = cls.objects.create(
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price=price,
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vm_id=vm_id,
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customer=customer,
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billing_address=billing_address,
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vm_pricing=vm_pricing
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)
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instance.assign_permissions(customer.user)
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return instance
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def set_approved(self):
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self.approved = True
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self.save()
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def set_stripe_charge(self, stripe_charge):
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self.stripe_charge_id = stripe_charge.id
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self.last4 = stripe_charge.source.last4
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self.cc_brand = stripe_charge.source.brand
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self.save()
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def set_subscription_id(self, subscription_id, cc_details):
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"""
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When creating a Stripe subscription, we have subscription id.
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We store this in the subscription_id field.
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This method sets the subscription id
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and the last4 and credit card brands used for this order.
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:param subscription_id: Stripe's subscription id
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:param cc_details: A dict containing card details
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{last4, brand}
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:return:
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"""
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self.subscription_id = subscription_id
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self.last4 = cc_details.get('last4')
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self.cc_brand = cc_details.get('brand')
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self.save()
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def get_cc_data(self):
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return {
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'last4': self.last4,
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'cc_brand': self.cc_brand,
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} if self.last4 and self.cc_brand else None
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class UserHostingKey(models.Model):
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user = models.ForeignKey(CustomUser)
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public_key = models.TextField()
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private_key = models.FileField(upload_to='private_keys', blank=True)
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created_at = models.DateTimeField(auto_now_add=True)
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name = models.CharField(max_length=100)
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@staticmethod
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def generate_RSA(bits=2048):
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'''
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Generate an RSA keypair with an exponent of 65537 in PEM format
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param: bits The key length in bits
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Return private key and public key
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'''
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new_key = RSA.generate(2048, os.urandom)
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public_key = new_key.publickey().exportKey("OpenSSH")
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private_key = new_key.exportKey("PEM")
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return private_key, public_key
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@classmethod
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def generate_keys(cls):
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private_key, public_key = cls.generate_RSA()
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# self.public_key = public_key
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# self.save(update_fields=['public_key'])
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return private_key, public_key
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class HostingBill(AssignPermissionsMixin, models.Model):
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customer = models.ForeignKey(StripeCustomer)
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billing_address = models.ForeignKey(BillingAddress)
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total_price = models.FloatField(default=0.0)
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permissions = ('view_hostingbill',)
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class Meta:
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permissions = (
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('view_hostingbill', 'View Hosting Bill'),
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)
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def __str__(self):
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return "%s" % (self.customer.user.email)
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@classmethod
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def create(cls, customer=None, billing_address=None):
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instance = cls.objects.create(customer=customer,
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billing_address=billing_address)
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return instance
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class MonthlyHostingBill(AssignPermissionsMixin, models.Model):
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"""
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Corresponds to Invoice object of Stripe
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"""
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customer = models.ForeignKey(StripeCustomer)
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order = models.ForeignKey(
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HostingOrder, null=True, blank=True, default=None,
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on_delete=models.SET_NULL
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)
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created = models.DateTimeField(help_text="When the invoice was created")
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receipt_number = models.CharField(
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help_text="The receipt number that is generated on Stripe",
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max_length=100
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)
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invoice_number = models.CharField(
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help_text="The invoice number that is generated on Stripe",
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max_length=100
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)
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paid_at = models.DateTimeField(help_text="Date on which the bill was paid")
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period_start = models.DateTimeField()
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period_end = models.DateTimeField()
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billing_reason = models.CharField(max_length=25)
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discount = models.PositiveIntegerField()
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total = models.IntegerField()
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lines_data_count = models.IntegerField()
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invoice_id = models.CharField(unique=True, max_length=100)
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lines_meta_data_csv = models.TextField(default="")
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subscription_ids_csv = models.TextField(default="")
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permissions = ('view_monthlyhostingbill',)
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class Meta:
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permissions = (
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('view_monthlyhostingbill', 'View Monthly Hosting'),
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)
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@classmethod
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def create(cls, args):
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# Try to infer the HostingOrder from subscription id or VM_ID
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if len(args['subscription_ids_csv']) > 0:
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sub_ids = [sub_id.strip() for sub_id in args['subscription_ids_csv'].split(",")]
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if len(sub_ids) == 1:
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try:
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args['order'] = HostingOrder.objects.get(
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subscription_id=sub_ids[0]
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)
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except HostingOrder.DoesNotExist as dne:
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logger.error("Hosting order for {} doesn't exist".format(
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sub_ids[0]
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))
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args['order'] = None
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else:
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logger.debug(
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"More than one subscriptions"
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"for MonthlyHostingBill {}".format(args['invoice_id'])
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)
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logger.debug("SUB_IDS=".format(','.join(sub_ids)))
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logger.debug("Not importing invoices")
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return
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elif len(args['lines_meta_data_csv']) > 0:
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vm_ids = [vm_id.strip() for vm_id in args['lines_meta_data_csv'].split(",")]
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if len(vm_ids) == 1:
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args['order'] = HostingOrder.objects.get(vm_id=vm_ids[0])
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else:
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logger.debug(
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"More than one VM_ID"
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"for MonthlyHostingBill {}".format(args['invoice_id'])
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)
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logger.debug("VM_IDS=".format(','.join(vm_ids)))
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logger.debug("Not importing invoices")
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return
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else:
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logger.debug("Neither subscription id nor vm_id available")
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logger.debug("Can't import invoice")
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return
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instance = cls.objects.create(
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created=datetime.utcfromtimestamp(
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args['created']).replace(tzinfo=pytz.utc),
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receipt_number=(
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args['receipt_number']
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if args['receipt_number'] is not None else ''
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),
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invoice_number=(
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args['invoice_number']
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if args['invoice_number'] is not None else ''
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),
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paid_at=datetime.utcfromtimestamp(
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args['paid_at']).replace(tzinfo=pytz.utc),
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period_start=datetime.utcfromtimestamp(
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args['period_start']).replace(tzinfo=pytz.utc),
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period_end=datetime.utcfromtimestamp(
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args['period_end']).replace(tzinfo=pytz.utc),
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billing_reason=args['billing_reason'],
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discount=args['discount'],
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total=args['total'],
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lines_data_count=args['lines_data_count'],
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invoice_id=args['invoice_id'],
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lines_meta_data_csv=args['lines_meta_data_csv'],
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customer=args['customer'],
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order=args['order'],
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subscription_ids_csv=args['subscription_ids_csv'],
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)
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if 'line_items' in args:
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line_items = args['line_items']
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for item in line_items:
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line_item_instance = HostingBillLineItem.objects.create(
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monthly_hosting_bill=instance,
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amount=item.amount,
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# description seems to be set to null in the Stripe
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# response for an invoice
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description="" if item.description is None else item.description,
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discountable=item.discountable,
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metadata=json.dumps(item.metadata),
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period_start=datetime.utcfromtimestamp(item.period.start).replace(tzinfo=pytz.utc), period_end=datetime.utcfromtimestamp(item.period.end).replace(tzinfo=pytz.utc),
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proration=item.proration,
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quantity=item.quantity,
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# Strange that line item does not have unit_amount but api
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# states that it is present
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# https://stripe.com/docs/api/invoiceitems/object#invoiceitem_object-unit_amount
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# So, for the time being I set the unit_amount to 0 if not
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# found in the line item
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unit_amount=item.unit_amount if hasattr(item, "unit_amount") else 0
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)
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line_item_instance.assign_permissions(instance.customer.user)
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instance.assign_permissions(instance.customer.user)
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return instance
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def total_in_chf(self):
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"""
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Returns amount in chf. The total amount in this model is in cents.
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Hence we multiply it by 0.01 to obtain the result
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:return:
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"""
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return self.total * 0.01
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def discount_in_chf(self):
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"""
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Returns discount in chf.
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:return:
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"""
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return self.discount * 0.01
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def get_vm_id(self):
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"""
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Returns the VM_ID metadata if set in this MHB else returns None
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:return:
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"""
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return_value = None
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if len(self.lines_meta_data_csv) > 0:
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vm_ids = [vm_id.strip() for vm_id in
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self.lines_meta_data_csv.split(",")]
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if len(vm_ids) == 1:
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return vm_ids[0]
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else:
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logger.debug(
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"More than one VM_ID"
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"for MonthlyHostingBill {}".format(self.invoice_id)
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)
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logger.debug("VM_IDS=".format(','.join(vm_ids)))
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return return_value
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def get_period_start(self):
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"""
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Return the period start of the invoice for the line items
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:return:
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"""
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items = HostingBillLineItem.objects.filter(monthly_hosting_bill=self)
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if len(items) > 0:
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return items[0].period_start
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else:
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return self.period_start
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def get_period_end(self):
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"""
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Return the period end of the invoice for the line items
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:return:
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"""
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items = HostingBillLineItem.objects.filter(monthly_hosting_bill=self)
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if len(items) > 0:
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return items[0].period_end
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else:
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return self.period_end
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class HostingBillLineItem(AssignPermissionsMixin, models.Model):
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"""
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Corresponds to InvoiceItem object of Stripe
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"""
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monthly_hosting_bill = models.ForeignKey(MonthlyHostingBill)
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amount = models.PositiveSmallIntegerField()
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description = models.CharField(max_length=255)
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discountable = models.BooleanField()
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metadata = models.CharField(max_length=128)
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period_start = models.DateTimeField()
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period_end = models.DateTimeField()
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proration = models.BooleanField()
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quantity = models.PositiveIntegerField()
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unit_amount = models.PositiveIntegerField()
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permissions = ('view_hostingbilllineitem',)
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class Meta:
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permissions = (
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('view_hostingbilllineitem', 'View Monthly Hosting Bill Line Item'),
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)
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def get_vm_id(self):
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"""
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If VM_ID is set in the metadata extract and return it as integer
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other return -1
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:return:
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"""
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if "VM_ID" in self.metadata:
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data = json.loads(self.metadata)
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return int(data["VM_ID"])
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else:
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return None
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class VMDetail(models.Model):
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user = models.ForeignKey(CustomUser)
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vm_id = models.IntegerField(default=0)
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disk_size = models.FloatField(default=0.0)
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cores = models.FloatField(default=0.0)
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memory = models.FloatField(default=0.0)
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configuration = models.CharField(default='', max_length=25)
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ipv4 = models.TextField(default='')
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ipv6 = models.TextField(default='')
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created_at = models.DateTimeField(auto_now_add=True)
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terminated_at = models.DateTimeField(null=True)
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def end_date(self):
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end_date = self.terminated_at if self.terminated_at else timezone.now()
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months = relativedelta(end_date, self.created_at).months or 1
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end_date = self.created_at + relativedelta(months=months, days=-1)
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return end_date
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class UserCardDetail(AssignPermissionsMixin, models.Model):
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permissions = ('view_usercarddetail',)
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stripe_customer = models.ForeignKey(StripeCustomer)
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last4 = models.CharField(max_length=4)
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brand = models.CharField(max_length=128)
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card_id = models.CharField(max_length=100, blank=True, default='')
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fingerprint = models.CharField(max_length=100)
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exp_month = models.IntegerField(null=False)
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exp_year = models.IntegerField(null=False)
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preferred = models.BooleanField(default=False)
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class Meta:
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permissions = (
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('view_usercarddetail', 'View User Card'),
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)
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@classmethod
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def create(cls, stripe_customer=None, last4=None, brand=None,
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fingerprint=None, exp_month=None, exp_year=None, card_id=None,
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preferred=False):
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instance = cls.objects.create(
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stripe_customer=stripe_customer, last4=last4, brand=brand,
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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
|