# Path: protector/internals.py
# DEFAULT_ROLE = 1
# 
# ADD_PERMISSION_PERMISSION = 'add_permission'
# 
# VIEW_RESTRICTED_OBJECTS = 'view_restricted_objects'
# 
# VIEW_PERMISSION_NAME = 'protector.{0}'.format(VIEW_RESTRICTED_OBJECTS)
# 
# VIEW_GENERIC_GROUP_HISTORY = 'view_generic_group_history'
# 
# VIEW_OWNER_TO_PERM_HISTORY = 'view_owner_to_perm_history'
# 
# def get_user_ctype():
#     return ContentType.objects.get_for_model(get_user_model())
# 
# Path: protector/helpers.py
# def get_view_permission():
#     codename = VIEW_RESTRICTED_OBJECTS
#     global _view_perm
#     OwnerToPermission = apps.get_model('protector', 'OwnerToPermission')
#     if _view_perm is None:
#         ctype = ContentType.objects.get_for_model(OwnerToPermission)
#         _view_perm = Permission.objects.get(
#             codename=codename, content_type=ctype
#         )
#     return _view_perm
# 
# def check_responsible_reason(func):
#     @wraps(func)
#     def wrapper(*args, **kwargs):
#         responsible = kwargs.get('responsible')
#         reason = kwargs.get('reason') or (len(args) > 2 and args[2])
#         if responsible is not None and not isinstance(responsible, get_user_model()):
#             raise ImproperResponsibleInstancePassed
#         if not isinstance(reason, basestring) or not len(reason):
#             raise NoReasonSpecified
# 
#         return func(*args, **kwargs)
#     return wrapper
# 
# Path: protector/managers.py
# class GenericUserToGroupManager(
#     models.Manager.from_queryset(GenericUserToGroupQuerySet)
# ):
# class OwnerToPermissionManager(models.Manager.from_queryset(OwnerToPermissionQuerySet)):
# class UserGroupManager(models.Manager):
# class GroupUserManager(models.Manager):
# class OwnerPermissionManager(models.Manager):
#     def __init__(self, instance):
#     def add(self, groups, reason, roles=None, responsible=None):
#     def remove(self, group, reason, roles=None, responsible=None):
#     def get_queryset(self, group_type=None):
#     def by_ctype(self, group_type, roles=None):
#     def __init__(self, instance):
#     def get_queryset(self):
#     def add(self, users, reason, roles=None, responsible=None):
#     def remove(self, user, reason, roles=None, responsible=None):
#     def by_role(self, roles):
#     def __init__(self, instance):
#     def get_queryset(self):
#     def add(self, perm, reason, obj=None, roles=None, responsible=None):
#     def remove(self, perm, reason, obj=None, roles=None, responsible=None):
# 
# Path: protector/reserved_reasons.py
# def MEMBER_FK_UPDATE_REASON(field):
#     return 'User was added to group due to {} foreign key update'.format(field)
# 
# SELF_GROUP_ROLE_UPDATED = 'Self-role added for user own group'


from django.db import models, IntegrityError
from django.conf import settings
from django.core.exceptions import PermissionDenied
from django.contrib import auth
from django.contrib.auth.models import Permission
from django.contrib.contenttypes.models import ContentType
from django.contrib.contenttypes.fields import GenericRelation, GenericForeignKey
from django.utils.translation import ugettext_lazy as _
from mptt.models import MPTTModel, TreeForeignKey
from protector.internals import (
    DEFAULT_ROLE,
    ADD_PERMISSION_PERMISSION,
    VIEW_RESTRICTED_OBJECTS,
    VIEW_PERMISSION_NAME,
    VIEW_GENERIC_GROUP_HISTORY,
    VIEW_OWNER_TO_PERM_HISTORY,
    get_user_ctype,
)
from protector.helpers import get_view_permission, check_responsible_reason
from protector.managers import (
    GenericUserToGroupManager,
    OwnerToPermissionManager,
    OwnerPermissionManager,
    UserGroupManager,
    GroupUserManager,
    RestrictedManager,
    GenericGroupManager,
)
from protector.reserved_reasons import MEMBER_FK_UPDATE_REASON, SELF_GROUP_ROLE_UPDATED
        return '{app}.{model} {pk}'.format(
            app=self.content_type.app_label,
            model=self.content_type.model,
            pk=self.object_id
        )


class Restricted(models.Model):
    """
        Inherit your model from that to enable visiblity restrictions
    """
    VIEW_PERMISSION_NAME = VIEW_PERMISSION_NAME

    restriction_id = models.PositiveIntegerField(
        verbose_name=_('restriction id'), blank=True, null=True
    )
    restriction_content_type = models.ForeignKey(
        verbose_name=_('restriction content type id'),
        to=ContentType, blank=True, null=True, related_name="%(app_label)s_%(class)s_restrictions",
        on_delete=models.SET_NULL
    )
    restriction = GenericForeignKey('restriction_content_type', 'restriction_id')

    objects = RestrictedManager()

    class Meta:
        abstract = True

    @classmethod
    def get_view_permission(cls):

# Path: protector/internals.py
# DEFAULT_ROLE = 1
# 
# ADD_PERMISSION_PERMISSION = 'add_permission'
# 
# VIEW_RESTRICTED_OBJECTS = 'view_restricted_objects'
# 
# VIEW_PERMISSION_NAME = 'protector.{0}'.format(VIEW_RESTRICTED_OBJECTS)
# 
# VIEW_GENERIC_GROUP_HISTORY = 'view_generic_group_history'
# 
# VIEW_OWNER_TO_PERM_HISTORY = 'view_owner_to_perm_history'
# 
# def get_user_ctype():
#     return ContentType.objects.get_for_model(get_user_model())
# 
# Path: protector/helpers.py
# def get_view_permission():
#     codename = VIEW_RESTRICTED_OBJECTS
#     global _view_perm
#     OwnerToPermission = apps.get_model('protector', 'OwnerToPermission')
#     if _view_perm is None:
#         ctype = ContentType.objects.get_for_model(OwnerToPermission)
#         _view_perm = Permission.objects.get(
#             codename=codename, content_type=ctype
#         )
#     return _view_perm
# 
# def check_responsible_reason(func):
#     @wraps(func)
#     def wrapper(*args, **kwargs):
#         responsible = kwargs.get('responsible')
#         reason = kwargs.get('reason') or (len(args) > 2 and args[2])
#         if responsible is not None and not isinstance(responsible, get_user_model()):
#             raise ImproperResponsibleInstancePassed
#         if not isinstance(reason, basestring) or not len(reason):
#             raise NoReasonSpecified
# 
#         return func(*args, **kwargs)
#     return wrapper
# 
# Path: protector/managers.py
# class GenericUserToGroupManager(
#     models.Manager.from_queryset(GenericUserToGroupQuerySet)
# ):
# class OwnerToPermissionManager(models.Manager.from_queryset(OwnerToPermissionQuerySet)):
# class UserGroupManager(models.Manager):
# class GroupUserManager(models.Manager):
# class OwnerPermissionManager(models.Manager):
#     def __init__(self, instance):
#     def add(self, groups, reason, roles=None, responsible=None):
#     def remove(self, group, reason, roles=None, responsible=None):
#     def get_queryset(self, group_type=None):
#     def by_ctype(self, group_type, roles=None):
#     def __init__(self, instance):
#     def get_queryset(self):
#     def add(self, users, reason, roles=None, responsible=None):
#     def remove(self, user, reason, roles=None, responsible=None):
#     def by_role(self, roles):
#     def __init__(self, instance):
#     def get_queryset(self):
#     def add(self, perm, reason, obj=None, roles=None, responsible=None):
#     def remove(self, perm, reason, obj=None, roles=None, responsible=None):
# 
# Path: protector/reserved_reasons.py
# def MEMBER_FK_UPDATE_REASON(field):
#     return 'User was added to group due to {} foreign key update'.format(field)
# 
# SELF_GROUP_ROLE_UPDATED = 'Self-role added for user own group'


# Path: protector/models.py
from django.db import models, IntegrityError
from django.conf import settings
from django.core.exceptions import PermissionDenied
from django.contrib import auth
from django.contrib.auth.models import Permission
from django.contrib.contenttypes.models import ContentType
from django.contrib.contenttypes.fields import GenericRelation, GenericForeignKey
from django.utils.translation import ugettext_lazy as _
from mptt.models import MPTTModel, TreeForeignKey
from protector.internals import (
    DEFAULT_ROLE,
    ADD_PERMISSION_PERMISSION,
    VIEW_RESTRICTED_OBJECTS,
    VIEW_PERMISSION_NAME,
    VIEW_GENERIC_GROUP_HISTORY,
    VIEW_OWNER_TO_PERM_HISTORY,
    get_user_ctype,
)
from protector.helpers import get_view_permission, check_responsible_reason
from protector.managers import (
    GenericUserToGroupManager,
    OwnerToPermissionManager,
    OwnerPermissionManager,
    UserGroupManager,
    GroupUserManager,
    RestrictedManager,
    GenericGroupManager,
)
from protector.reserved_reasons import MEMBER_FK_UPDATE_REASON, SELF_GROUP_ROLE_UPDATED

        return '{app}.{model} {pk}'.format(
            app=self.content_type.app_label,
            model=self.content_type.model,
            pk=self.object_id
        )


class Restricted(models.Model):
    """
        Inherit your model from that to enable visiblity restrictions
    """
    VIEW_PERMISSION_NAME = VIEW_PERMISSION_NAME

    restriction_id = models.PositiveIntegerField(
        verbose_name=_('restriction id'), blank=True, null=True
    )
    restriction_content_type = models.ForeignKey(
        verbose_name=_('restriction content type id'),
        to=ContentType, blank=True, null=True, related_name="%(app_label)s_%(class)s_restrictions",
        on_delete=models.SET_NULL
    )
    restriction = GenericForeignKey('restriction_content_type', 'restriction_id')

    objects = RestrictedManager()

    class Meta:
        abstract = True

    @classmethod
    def get_view_permission(cls):

        return get_view_permission()