from django.db.models import signals

from django.conf import settings

from django.contrib.auth.models import User, Group 

from ldt.core.models import Owner

from ldt.user.models import ldt, IriGroup

from django.contrib.contenttypes.models import ContentType

# import logging

from django.core.exceptions import ObjectDoesNotExist

def post_save_ldt(instance, raw, created, **kwargs):

    signals.post_save.send(sender=User, instance=instance, raw=raw, created=created)     

signals.post_save.connect(post_save_ldt, ldt) 

def post_save_irigroup(instance, raw, created, **kwargs):

    signals.post_save.send(sender=Group, instance=instance, raw=raw, created=created)

signals.post_save.connect(post_save_irigroup, IriGroup) 

def post_save_user(instance, raw, created, **kwargs):

    if created:

        try:

            owner = Owner.objects.get(user=instance)

        except ObjectDoesNotExist:

            owner=Owner(user=instance)

            owner.save() 

signals.post_save.connect(post_save_user, User) 

def post_save_group(instance, raw, created, **kwargs):

    if created:

        try:

            owner = Owner.objects.get(group=instance)

        except ObjectDoesNotExist:

            owner=Owner(group=instance)

            owner.save()

signals.post_save.connect(post_save_group, Group) 

def test_cms():

    if 'cms' in settings.INSTALLED_APPS:

        return True

    else:

        return False

def test_ldt():

    if 'ldt.ldt' in settings.INSTALLED_APPS:

        return True

    else:

        return False

def get_content_type_list() :

    content_type_list = []

    if test_cms():

        content_type = ContentType.objects.get(app_label='cms', model='page')

        content_type_list.append(content_type)

        content_type = ContentType.objects.get(app_label='snippet', model='snippet')

        content_type_list.append(content_type)

    # if test_ldt():

        # content_type = ContentType.objects.get(app_label='ldt', model='content')

        # content_type_list.append(content_type)

    return content_type_list