from django.db import models
from django.contrib.auth import get_user_model
from django.core.validators import MinValueValidator, MaxValueValidator


from uncloud_pay.models import Product, RecurringPeriod
from uncloud.models import UncloudModel, UncloudStatus

class VPNPool(UncloudModel):
    """
    Network address pools from which VPNs can be created
    """

    network = models.GenericIPAddressField(primary_key=True,
                                           editable=False)

    network_size = models.IntegerField(validators=[MinValueValidator(0),
                                                   MaxValueValidator(128)])

class VPNNetwork(UncloudModel):
    """
    A selected network. Used for tracking reservations / used networks
    """
    vpnpool = models.ForeignKey(VPNPool,
                                  on_delete=models.CASCADE)

    network = models.GenericIPAddressField(primary_key=True,
                                           editable=False)

class VPNProduct(Product):
    network = models.ForeignKey(VPNPool,
                                on_delete=models.CASCADE)


class MACAdress(models.Model):
    default_prefix = 0x420000000000