from django.db import models

from dncore.models import User
from .validators import HandleValidator


class WhoisObject(models.Model):
	handle_suffix = None

	handle = models.SlugField(max_length='32', unique=True, validators=[HandleValidator()])
	created = models.DateTimeField(auto_add_now=True)
	last_modified = models.DateTimeField(auto_add_now=True)

	class Meta:
		abstract = True

class Maintainer(WhoisObject):
	auth = models.ManyToManyField(User)

	admin_c = models.ManyToManyField("Contact")

class MntdObject(WhoisObject):
	mnt_by = models.ManyToManyField(Maintainer)

	class Meta:
		abstract = True


class Contact(MntdObject):
	TYPE = (('person', 'person'), ('role', 'role'))

	name = models.CharField(max_length=128)

class ASBlock(MntdObject):
	parent_block = models.ForeignKey("ASBlock", models.CASCADE, null=True, blank=True, default=None)
	description = models.CharField(max_length=64, blank=True)

class ASNumber(MntdObject):
	number = models.PositiveIntegerField(unique=True, db_index=True)
	volatile = models.BooleanField(default=False)
	asblock = models.ForeignKey(ASBlock, models.CASCADE)
	description = models.CharField(max_length=64, blank=True)

	mnt_lower = models.ManyToManyField(Maintainer)

#class Route(MntObject):
#	

class InetNum(WhoisObject):
	PROTO = (('ipv4', 'ipv4'), ('ipv6', 'ipv6'))
	protocol = models.CharField(max_length=4, choices=PROTO)
	netmask = models.PositiveIntegerField()
	parent_range = models.ForeignKey("InetNum", models.CASCADE, null=True, blank=True, default=None)
	description = models.CharField(max_length=64, blank=True)

	mnt_lower = models.ManyToManyField(Maintainer)