from django.db import models
from django.utils.translation import gettext_lazy as _


class GDPR_Event(models.Model):
    """
    Model to log GDPR-related events for auditing purposes.
    """

    EVENT_TYPES = [
        ("DATA_EXPORT", _("Export de données")),
        ("DATA_ANONYMIZATION", _("Anonymisation de données")),
        ("CONSENT_WITHDRAWAL", _("Consentement retiré")),
    ]

    EVENT_REASON = [
        ("USER_REQUEST", _("Demande utilisateur")),
        ("RETENTION_POLICY", _("Politique de conservation")),
    ]

    event_type = models.CharField(
        max_length=50, choices=EVENT_TYPES, verbose_name=_("type d'événement")
    )
    subject_reference = models.CharField(
        max_length=255,
        verbose_name=_("objet concerné"),
        help_text=_("Objet concerné par l'événement : Class:id"),
    )
    fields_touched = models.JSONField(
        blank=True,
        verbose_name=_("champs affectés"),
        help_text=_("Liste des champs affectés par l'événement."),
    )
    reason = models.CharField(
        max_length=50, verbose_name=_("raison"), choices=EVENT_REASON
    )
    done_at = models.DateTimeField(auto_now_add=True, verbose_name=_("date et heure"))
    done_by = models.ForeignKey(
        "users.User",
        null=True,
        blank=True,
        on_delete=models.SET_NULL,
        verbose_name=_("Effectué par"),
    )

    class Meta:
        verbose_name = _("Événement RGPD")
        verbose_name_plural = _("Événements RGPD")

    def __str__(self):
        return f"{self.get_event_type_display()} - {self.done_at} - {self.subject_reference}"