141 lines
4.1 KiB
Python
141 lines
4.1 KiB
Python
from django.db import models
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from django.utils.translation import gettext_lazy as _
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from django.core.exceptions import ValidationError
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from decimal import Decimal
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class MeasuringUnits(models.TextChoices):
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UNIT = 'UNIT', _('Unit')
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class ProductCategory(models.Model):
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name = models.CharField(max_length=100, unique=True)
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def __str__(self):
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return self.name
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class Product(models.Model):
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name = models.CharField(max_length=100, unique=False)
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price = models.DecimalField(max_digits=9, decimal_places=2)
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measuring_unit = models.CharField(
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max_length=20,
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choices=MeasuringUnits.choices,
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default=MeasuringUnits.UNIT
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)
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categories = models.ManyToManyField(ProductCategory)
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def __str__(self):
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return self.name
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class Sale(models.Model):
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customer = models.CharField(max_length=100)
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date = models.DateField("Date")
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phone = models.CharField(max_length=13, null=True, blank=True)
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description = models.CharField(max_length=255, null=True, blank=True)
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def __str__(self):
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return f"{self.date} {self.customer}"
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def get_total(self):
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lines = self.saleline_set.all()
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return sum([l.quantity * l.unit_price for l in lines])
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class SaleLine(models.Model):
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sale = models.ForeignKey(Sale, on_delete=models.CASCADE)
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product = models.ForeignKey(Product, on_delete=models.CASCADE)
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quantity = models.IntegerField(null=True)
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unit_price = models.DecimalField(max_digits=9, decimal_places=2)
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description = models.CharField(max_length=255, null=True, blank=True)
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def __str__(self):
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return f"{self.sale} - {self.product}"
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class PaymentMethods(models.TextChoices):
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CASH = 'CASH', _('Cash')
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CONFIAR = 'CONFIAR', _('Confiar')
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BANCOLOMBIA = 'BANCOLOMBIA', _('Bancolombia')
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class ReconciliationJarSummary():
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def __init__(self, payments):
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self._validate_payments(payments)
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self._payments = payments
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def _validate_payments(self, payments):
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pass
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@property
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def total(self):
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return sum([p.amount for p in self.payments])
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@property
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def payments(self):
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return self._payments
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class ReconciliationJar(models.Model):
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is_valid = models.BooleanField(default=False)
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date_time = models.DateTimeField()
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description = models.CharField(max_length=255, null=True, blank=True)
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reconcilier = models.CharField(max_length=255, null=False, blank=False)
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cash_taken = models.DecimalField(max_digits=9, decimal_places=2)
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cash_discrepancy = models.DecimalField(max_digits=9, decimal_places=2)
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def clean(self):
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if not self.is_valid:
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payments = Payment.get_reconciliation_jar_summary().payments
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else:
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payments = self.payment_set.all()
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payments_amount = Decimal(sum([p.amount for p in payments]))
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reconciliation_ammount = Decimal(sum([
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self.cash_taken,
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self.cash_discrepancy,
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]))
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equal_ammounts = reconciliation_ammount.compare(payments_amount) == Decimal('0')
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if not equal_ammounts:
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raise ValidationError(
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{"cash_taken": _("The taken ammount has discrepancy.")}
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)
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def add_payments(self, payments):
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for payment in payments:
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self.payment_set.add(payment)
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self.is_valid = True
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class Payment(models.Model):
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date_time = models.DateTimeField()
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type_payment = models.CharField(
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max_length=30,
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choices=PaymentMethods.choices,
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default=PaymentMethods.CASH
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)
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amount = models.DecimalField(max_digits=9, decimal_places=2)
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reconciliation_jar = models.ForeignKey(
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ReconciliationJar,
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null=True,
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default=None,
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blank=True,
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on_delete=models.RESTRICT
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)
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description = models.CharField(max_length=255, null=True, blank=True)
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@classmethod
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def get_reconciliation_jar_summary(cls):
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return ReconciliationJarSummary(
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cls.objects.filter(
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type_payment=PaymentMethods.CASH,
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reconciliation_jar=None
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)
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)
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