from django.db import models
from django.db.models import Q

# Create your models here.

MODE_CHOICES = (
 ('master', 'master'),
 ('managed','managed'),
)

PORT_CHOICES = (
  ('vr0','vr0'),
  ('vr1','vr1'),
  ('vr2','vr2'),
  ('ue0','ue0'),
  ('ue1','ue1'),
  ('sis0','sis0'),
  ('sis1','sis1'),
)

MODEL_CHOICES = (
  ('Ethernet', 'Ethernet'),
  ('Bullet2', 'NanoStation2'),
  ('NanoStation2', 'NanoStation2'),
  ('NanoStationM2', 'NanoStationM2'),
  ('NanoStation5', 'NanoStation5'),
  ('NanoStationM5', 'NanoStationM5'),
)

NETMASK_CHOICES = zip(range(12,31),range(12,31))
class IPBlock(models.Model):
  network = models.IPAddressField(default="172.16.",unique=True)
  netmask = models.IntegerField(choices=NETMASK_CHOICES,default=29)
  def __unicode__(self):
    return "%s/%s" % (self.network, self.netmask)

DEFAULT_IPBLOCK = lambda: IPBlock.objects.get_or_create(network='0.0.0.0',netmask=0)[0].id

class Node(models.Model):
  name = models.CharField(max_length="100")
  def __unicode__(self):
    return self.name


class Interface(models.Model):
  node = models.ForeignKey(Node)
  port = models.CharField(max_length="100", choices=PORT_CHOICES, default="vr0")
  model = models.CharField(max_length="100", choices=MODEL_CHOICES, default="Ethernet")
  mode = models.CharField(max_length="100", choices=MODE_CHOICES, default="master")
  def __unicode__(self):
    return "%s - %s - %s - %s" % (self.node, self.port, self.model, self.mode)

class Link(models.Model):
  ip_block = models.ForeignKey(IPBlock,unique=True,default=DEFAULT_IPBLOCK)
  interfaces = models.ManyToManyField(Interface)
  def __unicode__(self):
     return "%s : %s" % (self.ip_block, '|'.join(map(str,self.interfaces.all())))