import uuid

from django.db import models
from django.utils import timezone


class UUIDPrimaryKeyModel(models.Model):
    id = models.UUIDField(primary_key=True, default=uuid.uuid4, editable=False)

    class Meta:
        abstract = True


class TimeStampedModel(UUIDPrimaryKeyModel):
    created_at = models.DateTimeField(auto_now_add=True, db_index=True)
    updated_at = models.DateTimeField(auto_now=True)

    class Meta:
        abstract = True
        ordering = ["-created_at"]


class ActiveManager(models.Manager):
    def get_queryset(self):
        return super().get_queryset().filter(deleted_at__isnull=True)


class SoftDeleteModel(TimeStampedModel):
    deleted_at = models.DateTimeField(null=True, blank=True, db_index=True)

    objects = ActiveManager()
    all_objects = models.Manager()

    def delete(self, using=None, keep_parents=False):
        self.deleted_at = timezone.now()
        self.save(update_fields=["deleted_at"])

    def hard_delete(self):
        super().delete()

    def restore(self):
        self.deleted_at = None
        self.save(update_fields=["deleted_at"])

    @property
    def is_deleted(self):
        return self.deleted_at is not None

    class Meta:
        abstract = True


class AuditedModel(SoftDeleteModel):
    created_by = models.ForeignKey(
        "org.Staff",
        null=True,
        blank=True,
        on_delete=models.SET_NULL,
        related_name="%(app_label)s_%(class)s_created",
        db_index=True,
    )
    updated_by = models.ForeignKey(
        "org.Staff",
        null=True,
        blank=True,
        on_delete=models.SET_NULL,
        related_name="%(app_label)s_%(class)s_updated",
    )

    class Meta:
        abstract = True