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


class AuditEntry(models.Model):
    """Who did what to whom, when and from where. Written only by `audit.services` (AD-4, AD-19)."""

    actor = models.CharField(max_length=256, db_index=True)  # lower-case key
    action = models.CharField(max_length=128, db_index=True)
    target = models.CharField(max_length=256, blank=True, default="")
    ip = models.CharField(max_length=64, blank=True, default="")
    created_at = models.DateTimeField(default=timezone.now, db_index=True)  # UTC
    detail = models.JSONField(default=dict, blank=True)

    class Meta:
        ordering = ["-created_at", "-id"]