from django.db import models
from django_core.models.base import AbstractBaseModel
from django.utils.translation import gettext_lazy as _


class AdImageModel(AbstractBaseModel):
    ad = models.ForeignKey(
        "api.AdModel",
        on_delete=models.CASCADE,
        verbose_name=_("Ad"),
        related_name="images"
    )
    ad_variant = models.ForeignKey(
        "api.AdVariantModel",
        on_delete=models.CASCADE,
        verbose_name=_("Ad Variant"),
        related_name="images",
        null=True,
        blank=True
    )
    image = models.ImageField(_("Image"), upload_to="ads/images/")
    order = models.PositiveIntegerField(_("Display Order"), default=0)
    is_primary = models.BooleanField(_("Is Primary"), default=False)

    def __str__(self):
        return f"Image for {self.ad.name}"

    class Meta:
        db_table = "ad_images"
        verbose_name = _("Ad Image")
        verbose_name_plural = _("Ad Images")
        ordering = ["order", "-created_at"]
        indexes = [
            models.Index(fields=["ad", "is_primary"]),
        ]