from decimal import Decimal
from uuid import uuid4
from django.db import models
from django.utils.text import gettext_lazy as _


def set_default_metadata():
    return {"items": [], "response": None}


class PaymentTPV(models.Model):
    class StatusChoices(models.TextChoices):
        PAID = "PAI", _("Pagado")
        PENDING = "PEN", _("Pendiente")
        ERROR = "ERR", _("Error")

    hash = models.UUIDField(verbose_name=_("Hash"), default=uuid4, db_index=True)

    status = models.CharField(
        max_length=3,
        default=StatusChoices.PENDING,
        choices=StatusChoices.choices,
        verbose_name=_("Estado"),
    )
    amount = models.DecimalField(
        max_digits=8,
        decimal_places=2,
        default=Decimal("0"),
        verbose_name=_("Cantidad a pagar"),
    )

    creation_date = models.DateTimeField(
        auto_now_add=True, verbose_name=_("Fecha de creación")
    )
    last_modification_date = models.DateTimeField(
        auto_now=True, verbose_name=_("Fecha de última modificación")
    )

    contact_email = models.EmailField(
        blank=True, null=True, verbose_name=_("Email de contacto")
    )
    observations = models.CharField(
        max_length=255,
        default="",
        blank=True,
        null=True,
        verbose_name=_("Observaciones"),
    )

    metadata = models.JSONField(
        default=set_default_metadata, verbose_name=_("Metadata")
    )
    """
    Metadata example:
    {
        "items": [{
            "id": 1000,
            "type": "type",
            "amount_to_pay": 10.00,
            "amount_to_pay_int": 1000,
        }],
    }
    """

    def regenerate_uuid(self):
        self.hash = uuid4()
        self.save()

    @property
    def amount_integer(self) -> int:
        return int(self.amount * 100)

    class Meta:
        verbose_name = _("Pago de pedido en Redsys")
        verbose_name_plural = _("Pagos de pedidos en Redsys")