from django.db import models
from django.contrib.auth.models import User


class Notifying(models.Model):
    subscribed = models.ManyToManyField(
        User,
        verbose_name=_("abonnés"),
        related_name="subscribed_to"
    )

    def get_url(self, *args, **kwargs):
        pass


class Notification(models.Model):
    sent_by = models.ForeignKey(Notifying)
    about = models.ForeignKey(Notifying)
    to = models.ForeignKey(
        User,
        verbose_name=_("envoyée à")
    )
    viewed_at = models.DateTimeField(
        _("Vue à"),
        blank=True
    )
    text = models.TextField(_("corps de la notification"))


class Commentable(Notifying):
    pass


class Thread(models.Model):
    topic = models.OneToOne(Commentable)


class Comment(models.Model):
    thread = models.ForeignKey(Thread)
    parent = models.ForeignKey(
        'Comment',
        related_name="replies",
    )
    author = models.ForeignKey(
        User,
        verbose_name=_("auteur"),
        editable=False
    )
    at = models.DateTimeField(
        _("date d'écriture"),
        auto_now_add=True
    )
    text = models.TextField(_("corps du message"))