116 lines
3.3 KiB
Python
116 lines
3.3 KiB
Python
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from django.db import models
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from django.contrib.auth import get_user_model
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from django.core.files.base import ContentFile
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from django.utils import timezone
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import uuid
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from dbsettings.functions import getValue
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from auction.models import Inquiry
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from .billingaddress import BillingAddress
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from ..functions import invoice_upload_path
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from ..pdfviews import InvoicePDFView
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class InvoiceTypeChoices(models.IntegerChoices):
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INVOICE = (0, "Rechnung")
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DEPOSIT = (1, "Sicherheitsleistung")
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class Invoice(models.Model):
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uuid = models.UUIDField(default=uuid.uuid4)
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user = models.ForeignKey(get_user_model(), models.PROTECT)
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billing_address = models.ForeignKey(BillingAddress, models.PROTECT)
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currency = models.CharField(max_length=3)
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tax_rate = models.DecimalField(max_digits=4, decimal_places=2)
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invoice = models.FileField(null=True, blank=True, upload_to=invoice_upload_path)
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inquiry = models.OneToOneField(Inquiry, null=True, blank=True, on_delete=models.SET_NULL)
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created = models.DateTimeField(auto_now_add=True)
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type = models.IntegerField(choices=InvoiceTypeChoices.choices)
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@property
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def price_net(self):
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price = 0
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for item in self.invoiceitem_set.all():
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price += item.net_total
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return price
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@property
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def tax(self):
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return round(self.price_net * self.tax_rate / 100, 2)
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@property
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def price_gross(self):
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return self.price_net + self.tax
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@property
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def payment_instructions(self):
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return None
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@property
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def url(self):
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try:
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return self.invoice.url
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except:
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return False
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@property
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def balance(self):
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paid_amount = 0
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for payment in self.invoicepayment_set.all():
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paid_amount += payment.amount
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return paid_amount - self.price_gross
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@property
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def is_paid(self):
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return self.balance >= 0
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def finalize(self, *args, **kwargs):
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if self.is_paid:
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try:
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self.inquiry.process_payment(*args, **kwargs)
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except Inquiry.DoesNotExist:
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pass
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self.generate_invoice()
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def generate_invoice(self):
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view = InvoicePDFView()
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bottom_tip = (f"{ self.payment_instructions }<br /><br />" if self.payment_instructions else "") + getValue("billing.bottom_tip", "")
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bottom_tip += "<br />" if bottom_tip else ""
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bottom_tip += "Dokument erstellt: %s" % str(timezone.now())
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args = {
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"type": InvoiceTypeChoices._value2label_map_[self.type],
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"object": self,
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"bottom_tip": bottom_tip
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}
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self.invoice = ContentFile(view.render(**args), "invoice.pdf")
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self.save()
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@classmethod
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def from_inquiry(cls, inquiry):
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invoice = cls.objects.create(
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user = inquiry.client.user,
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billing_address = BillingAddress.from_profile(inquiry.client),
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currency = settings.CURRENCY_CODE,
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tax_rate = 0,
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inquiry = inquiry
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)
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InvoiceItem.objects.create(
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invoice = invoice,
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name = "SL",
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description = "Rückzahlbare Sicherheitsleistung zu JourneyJoker-Anfrage #%i" % inquiry.id,
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count = 1,
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net_each = inquiry.budget
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)
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return invoice
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