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import uuid
from functools import reduce
from django.db import models
from django.utils.translation import ugettext_lazy as _
from common.utils import date_expired_default, set_or_append_attr_bulk
from orgs.mixins import OrgModelMixin
from ..const import PERMS_ACTION_NAME_CHOICES, PERMS_ACTION_NAME_ALL
from .base import BasePermission
__all__ = [
'Action', 'AssetPermission', 'NodePermission', 'ActionFlag'
]
class Action(models.Model):
id = models.UUIDField(default=uuid.uuid4, primary_key=True)
name = models.CharField(
max_length=128, unique=True, choices=PERMS_ACTION_NAME_CHOICES,
verbose_name=_('Name')
)
class Meta:
verbose_name = _('Action')
def __str__(self):
return self.get_name_display()
@classmethod
def get_action_all(cls):
return cls.objects.get(name=PERMS_ACTION_NAME_ALL)
class ActionFlag:
CONNECT = 0b00000001
UPLOAD = 0b00000010
DOWNLOAD = 0b00000100
UPDOWNLOAD = UPLOAD | DOWNLOAD
ALL = 0b11111111
DB_CHOICES = (
(ALL, _('All')),
(CONNECT, _('Connect')),
(UPLOAD, _('Upload file')),
(DOWNLOAD, _('Download file')),
(UPDOWNLOAD, _("Upload download")),
)
NAME_MAP = {
ALL: "all",
CONNECT: "connect",
UPLOAD: "upload_file",
DOWNLOAD: "download_file",
UPDOWNLOAD: "updownload",
}
NAME_MAP_REVERSE = dict({v: k for k, v in NAME_MAP.items()})
CHOICES = []
for i, j in DB_CHOICES:
CHOICES.append((NAME_MAP[i], j))
@classmethod
def value_to_choices(cls, value):
value = int(value)
choices = [cls.NAME_MAP[i] for i, j in cls.DB_CHOICES if value & i == i]
return choices
@classmethod
def choices_to_value(cls, value):
def to_choices(x, y):
x = cls.NAME_MAP_REVERSE.get(x, 0)
y = cls.NAME_MAP_REVERSE.get(y, 0)
return x | y
return reduce(to_choices, value)
@classmethod
def choices(cls):
return [(cls.NAME_MAP[i], j) for i, j in cls.DB_CHOICES]
class AssetPermission(BasePermission):
assets = models.ManyToManyField('assets.Asset', related_name='granted_by_permissions', blank=True, verbose_name=_("Asset"))
nodes = models.ManyToManyField('assets.Node', related_name='granted_by_permissions', blank=True, verbose_name=_("Nodes"))
system_users = models.ManyToManyField('assets.SystemUser', related_name='granted_by_permissions', verbose_name=_("System user"))
# actions = models.ManyToManyField(Action, related_name='permissions', blank=True, verbose_name=_('Action'))
actions = models.IntegerField(choices=ActionFlag.DB_CHOICES, default=ActionFlag.ALL, verbose_name=_("Actions"))
class Meta:
unique_together = [('org_id', 'name')]
verbose_name = _("Asset permission")
@classmethod
def get_queryset_with_prefetch(cls):
return cls.objects.all().valid().prefetch_related('nodes', 'assets', 'system_users')
class NodePermission(OrgModelMixin):
id = models.UUIDField(default=uuid.uuid4, primary_key=True)
node = models.ForeignKey('assets.Node', on_delete=models.CASCADE, verbose_name=_("Node"))
user_group = models.ForeignKey('users.UserGroup', on_delete=models.CASCADE, verbose_name=_("User group"))
system_user = models.ForeignKey('assets.SystemUser', on_delete=models.CASCADE, verbose_name=_("System user"))
is_active = models.BooleanField(default=True, verbose_name=_('Active'))
date_expired = models.DateTimeField(default=date_expired_default, verbose_name=_('Date expired'))
created_by = models.CharField(max_length=128, blank=True, verbose_name=_('Created by'))
date_created = models.DateTimeField(auto_now_add=True, verbose_name=_('Date created'))
comment = models.TextField(verbose_name=_('Comment'), blank=True)
def __str__(self):
return "{}:{}:{}".format(self.node.value, self.user_group.name, self.system_user.name)
class Meta:
verbose_name = _("Asset permission")