from plstackapi.openstack.client import OpenStackClient
from plstackapi.openstack.driver import OpenStackDriver
from plstackapi.planetstack.models import * 


def auth_check(auth):
    client = OpenStackDriver(username=auth['Username'],
                             password=auth['AuthMethod'],
                             tenant=auth['LoginBase'])
    client.authenticate()
    return client


def add_role(auth, name):
    client = auth_check(auth)
    keystone_role = client.keystone.roles.create(name)
    role = Role(role_type=name, role_id=keystone_role.id)
    role.save()
    return role

def delete_role(auth, name):
    client = auth_check(auth)
    role = Role.objects.filter(role_type=name)
    client.keystone.roles.delete(role.role_id)
    role.delete()
    return 1

def get_roles(auth, filter={}):
    client = auth_check(auth)
    roles = Role.objects.filter(**filter)
    return roles