159 lines
6 KiB
Python
159 lines
6 KiB
Python
from datetime import timedelta
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from django.conf import settings
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from django.db import models
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from django.utils import timezone
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from djmoney.models.fields import MoneyField
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from djmoney.money import Money
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class FlavorPrice(models.Model):
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flavor_id = models.CharField(max_length=256)
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daily_price = MoneyField(max_digits=10, decimal_places=0)
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monthly_price = MoneyField(max_digits=10, decimal_places=0)
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class FloatingIpsPrice(models.Model):
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daily_price = MoneyField(max_digits=10, decimal_places=0)
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monthly_price = MoneyField(max_digits=10, decimal_places=0)
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class VolumePrice(models.Model):
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volume_type_id = models.CharField(max_length=256)
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daily_price = MoneyField(max_digits=10, decimal_places=0)
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monthly_price = MoneyField(max_digits=10, decimal_places=0)
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class BillingProject(models.Model):
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tenant_id = models.CharField(max_length=256)
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class Invoice(models.Model):
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class InvoiceState(models.IntegerChoices):
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IN_PROGRESS = 1
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FINISHED = 100
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project = models.ForeignKey('BillingProject', on_delete=models.CASCADE)
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start_date = models.DateTimeField()
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end_date = models.DateTimeField(default=None, blank=True, null=True)
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state = models.IntegerField(choices=InvoiceState.choices)
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tax = MoneyField(max_digits=10, decimal_places=0, default=None, blank=True, null=True)
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total = MoneyField(max_digits=10, decimal_places=0, default=None, blank=True, null=True)
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created_at = models.DateTimeField(auto_now_add=True, blank=True, null=True)
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updated_at = models.DateTimeField(auto_now=True, blank=True, null=True)
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@property
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def subtotal(self):
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# Need to optimize? currently price is calculated on the fly, maybe need to save to db to make performance faster?
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instance_price = sum(map(lambda x: x.price_charged, self.instances.all()))
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fip_price = sum(map(lambda x: x.price_charged, self.floating_ips.all()))
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volume_price = sum(map(lambda x: x.price_charged, self.volumes.all()))
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price = instance_price + fip_price + volume_price
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if price == 0:
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return Money(amount=price, currency=settings.DEFAULT_CURRENCY)
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return instance_price + fip_price + volume_price
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class InvoiceInstance(models.Model):
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invoice = models.ForeignKey('Invoice', on_delete=models.CASCADE, related_name='instances')
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instance_id = models.CharField(max_length=266)
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name = models.CharField(max_length=256)
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flavor_id = models.CharField(max_length=256)
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current_state = models.CharField(max_length=256)
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start_date = models.DateTimeField()
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end_date = models.DateTimeField(default=None, blank=True, null=True)
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daily_price = MoneyField(max_digits=10, decimal_places=0)
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monthly_price = MoneyField(max_digits=10, decimal_places=0)
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created_at = models.DateTimeField(auto_now_add=True, blank=True, null=True)
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updated_at = models.DateTimeField(auto_now=True, blank=True, null=True)
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@property
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def adjusted_end_date(self):
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current_date = timezone.now()
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if self.end_date:
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end_date = self.end_date
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else:
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end_date = current_date
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return end_date
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@property
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def price_charged(self):
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# TODO: Fix price calculation
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# Currently only calculate daily price and it can return zero if end date not yet 1 day
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end_date = self.adjusted_end_date
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# TODO: For Testing, please delete
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end_date += timedelta(days=1)
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days = (end_date - self.start_date).days
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return self.daily_price * days
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class InvoiceFloatingIp(models.Model):
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invoice = models.ForeignKey('Invoice', on_delete=models.CASCADE, related_name='floating_ips')
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fip_id = models.CharField(max_length=266)
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ip = models.CharField(max_length=256)
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current_state = models.CharField(max_length=256)
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start_date = models.DateTimeField()
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end_date = models.DateTimeField(default=None, blank=True, null=True)
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daily_price = MoneyField(max_digits=10, decimal_places=0)
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monthly_price = MoneyField(max_digits=10, decimal_places=0)
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created_at = models.DateTimeField(auto_now_add=True)
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updated_at = models.DateTimeField(auto_now=True)
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@property
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def adjusted_end_date(self):
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current_date = timezone.now()
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if self.end_date:
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end_date = self.end_date
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else:
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end_date = current_date
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return end_date
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@property
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def price_charged(self):
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# TODO: Fix price calculation
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# Currently only calculate daily price and it can return zero if end date not yet 1 day
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end_date = self.adjusted_end_date
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# TODO: For Testing, please delete
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end_date += timedelta(days=1)
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days = (end_date - self.start_date).days
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return self.daily_price * days
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class InvoiceVolume(models.Model):
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invoice = models.ForeignKey('Invoice', on_delete=models.CASCADE, related_name='volumes')
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volume_id = models.CharField(max_length=266)
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volume_type_id = models.CharField(max_length=266)
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space_allocation_gb = models.IntegerField()
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current_state = models.CharField(max_length=256)
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start_date = models.DateTimeField()
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end_date = models.DateTimeField(default=None, blank=True, null=True)
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daily_price = MoneyField(max_digits=10, decimal_places=0)
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monthly_price = MoneyField(max_digits=10, decimal_places=0)
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created_at = models.DateTimeField(auto_now_add=True)
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updated_at = models.DateTimeField(auto_now=True)
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@property
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def adjusted_end_date(self):
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current_date = timezone.now()
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if self.end_date:
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end_date = self.end_date
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else:
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end_date = current_date
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return end_date
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@property
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def price_charged(self):
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# TODO: Fix price calculation
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# Currently only calculate daily price and it can return zero if end date not yet 1 day
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end_date = self.adjusted_end_date
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# TODO: For Testing, please delete
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end_date += timedelta(days=1)
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days = (end_date - self.start_date).days
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return self.daily_price * self.space_allocation_gb * days
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