from django.db import models

from accounts.models import User


class Device(models.Model):
    STATUS_ACTIVE = "active"
    STATUS_REVOKED = "revoked"

    user = models.ForeignKey(User, on_delete=models.CASCADE, related_name="devices")
    device_name = models.CharField(max_length=128)
    device_fingerprint = models.CharField(max_length=256, blank=True)
    netmaker_node_id = models.CharField(max_length=128, blank=True)
    status = models.CharField(max_length=16, default=STATUS_ACTIVE)
    created_at = models.DateTimeField(auto_now_add=True)
    updated_at = models.DateTimeField(auto_now=True)

    def __str__(self) -> str:
        return f"{self.user_id}:{self.device_name}"

    class Meta:
        constraints = [
            models.UniqueConstraint(
                fields=["user", "device_fingerprint"],
                name="unique_user_device_fingerprint",
            )
        ]


class VpnLog(models.Model):
    user = models.ForeignKey(User, on_delete=models.CASCADE)
    device = models.ForeignKey(Device, on_delete=models.SET_NULL, null=True, blank=True)
    action = models.CharField(max_length=64)
    detail = models.JSONField(default=dict, blank=True)
    created_at = models.DateTimeField(auto_now_add=True)