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from django.core.validators import RegexValidator
from django.db import models
from django.db.models import Q
from .base import TimestampedModel
class Account(TimestampedModel):
class Kind(models.TextChoices):
BANK = "BANK", "Bank"
CREDIT_CARD = "CREDIT_CARD", "Credit card"
name = models.CharField(max_length=255, unique=True)
kind = models.CharField(max_length=16, choices=Kind.choices)
currency = models.CharField(max_length=3, default="BRL", validators=[
RegexValidator(r"\A[A-Z]{3}\Z", "Use three uppercase ASCII letters.")])
archived = models.BooleanField(default=False)
class Meta:
constraints = [
models.CheckConstraint(condition=Q(kind__in=["BANK", "CREDIT_CARD"]), name="account_valid_kind"),
models.CheckConstraint(condition=Q(currency__regex=r"^[A-Z]{3}$"), name="account_valid_currency"),
models.CheckConstraint(condition=Q(name__regex=r"\S"), name="account_nonblank_name"),
]
class Payee(TimestampedModel):
name = models.CharField(max_length=255, unique=True)
archived = models.BooleanField(default=False)
class Meta:
constraints = [models.CheckConstraint(condition=Q(name__regex=r"\S"), name="payee_nonblank_name")]
class CategoryGroup(TimestampedModel):
name = models.CharField(max_length=255, unique=True)
archived = models.BooleanField(default=False)
class Meta:
constraints = [models.CheckConstraint(condition=Q(name__regex=r"\S"), name="category_group_nonblank_name")]
class Category(TimestampedModel):
class Kind(models.TextChoices):
INCOME = "INCOME", "Income"
EXPENSE = "EXPENSE", "Expense"
name = models.CharField(max_length=255)
kind = models.CharField(max_length=16, choices=Kind.choices)
group = models.ForeignKey(CategoryGroup, on_delete=models.PROTECT, related_name="categories", null=True, blank=True)
archived = models.BooleanField(default=False)
class Meta:
constraints = [
models.CheckConstraint(condition=Q(kind__in=["INCOME", "EXPENSE"]), name="category_valid_kind"),
models.CheckConstraint(condition=Q(name__regex=r"\S"), name="category_nonblank_name"),
models.UniqueConstraint(fields=["group", "name"], name="category_group_name_unique"),
models.UniqueConstraint(fields=["name"], condition=Q(group__isnull=True), name="category_ungrouped_name_unique"),
]
class Tag(TimestampedModel):
name = models.CharField(max_length=255, unique=True)
archived = models.BooleanField(default=False)
class Meta:
constraints = [models.CheckConstraint(condition=Q(name__regex=r"\S"), name="tag_nonblank_name")]