##############################################################################
# Copyright (c) 2017 ZTE Coreporation and others.
# feng.xiaowei@zte.com.cn
# All rights reserved. This program and the accompanying materials
# are made available under the terms of the Apache License, Version 2.0
# which accompanies this distribution, and is available at
# http://www.apache.org/licenses/LICENSE-2.0
##############################################################################
import os

import glanceclient

from deploy.common import query
import keystoneauth


class Glance(keystoneauth.ClientBase):
    def __init__(self, version='2', openrc=None):
        super(Glance, self).__init__(glanceclient.Client, version, openrc)
        self.controller = self.client.images

    def create(self, name, path,
               disk_format="qcow2",
               container_format="bare",
               visibility="public"):
        if not os.path.isfile(path):
            raise Exception('Error: file {} not exist'.format(path))
        image = self.controller.create(name=name,
                                       visibility=visibility,
                                       disk_format=disk_format,
                                       container_format=container_format)
        id = image.id
        with open(path) as data:
            self.controller.upload(id, data)
        return id

    def get_by_name(self, name):
        return query.find(lambda image: image.name == name, self.list())

    def list(self):
        return self.controller.list()