"""
This module contains models related to domain names.

"""
from __future__ import absolute_import, unicode_literals

from django.db import models, transaction
from django.conf import settings
from django.utils.encoding import python_2_unicode_compatible
from django.utils.translation import ugettext as _

from model_utils.models import TimeStampedModel


@python_2_unicode_compatible
class DomainBase(TimeStampedModel):
    """
    This is the base model for domains.

    """
    domain = models.CharField(_('domain name'), max_length=128, unique=True)
    customer = models.ForeignKey(
        settings.AUTH_USER_MODEL, verbose_name=_('customer'), blank=True,
        null=True)

    class Meta:
        abstract = True

    def __str__(self):
        return self.domain


@python_2_unicode_compatible
class MailDomain(DomainBase):
    """
    This is the model for mail domains. Mail domains are used to configure the
    mail servers (SMTP/IMAP/POP3). Mail addresses are assigned to these mail
    domains.

    """
    class Meta:
        verbose_name = _('Mail domain')
        verbose_name_plural = _('Mail domains')

    def __str__(self):
        return self.domain

    def get_mailaddresses(self):
        """
        Get a list of mail addresses assigned to this mail domain.

        """
        return self.mailaddress_set.all()
    mailaddresses = property(get_mailaddresses)


class HostingDomainManager(models.Manager):
    """
    Default Manager for :py:class:`HostingDomain`.

    """
    @transaction.atomic
    def create_for_hosting_package(
        self, hosting_package, domain, commit, **kwargs
    ):
        from hostingpackages.models import CustomerHostingPackageDomain
        hostingdomain = self.create(
            customer=hosting_package.customer, domain=domain, **kwargs)
        hostingdomain.maildomain = MailDomain.objects.create(
            customer=hosting_package.customer, domain=domain)
        custdomain = CustomerHostingPackageDomain.objects.create(
            hosting_package=hosting_package, domain=hostingdomain)
        if commit:
            hostingdomain.save()
            custdomain.save()
        return hostingdomain


@python_2_unicode_compatible
class HostingDomain(DomainBase):
    """
    This is the model for hosting domains. A hosting domain is linked to a
    customer hosting account.

    """
    maildomain = models.OneToOneField(
        MailDomain, verbose_name=_('mail domain'), blank=True, null=True,
        help_text=_('assigned mail domain for this domain')
    )

    objects = HostingDomainManager()

    class Meta:
        verbose_name = _('Hosting domain')
        verbose_name_plural = _('Hosting domains')

    def __str__(self):
        return self.domain