
# 
#   Copyright 2016 RIFT.IO Inc
#
#   Licensed under the Apache License, Version 2.0 (the "License");
#   you may not use this file except in compliance with the License.
#   You may obtain a copy of the License at
#
#       http://www.apache.org/licenses/LICENSE-2.0
#
#   Unless required by applicable law or agreed to in writing, software
#   distributed under the License is distributed on an "AS IS" BASIS,
#   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
#   See the License for the specific language governing permissions and
#   limitations under the License.
#

import pytest
import os
import subprocess
import sys

import rift.auto.log
import rift.auto.session
import rift.vcs.vcs
import rift.rwcal.openstack
import logging

import gi
gi.require_version('RwCloudYang', '1.0')

from gi.repository import RwCloudYang

@pytest.fixture(scope='session')
def cloud_name_prefix():
    '''fixture which returns the prefix used in cloud account names'''
    return 'cloud'

@pytest.fixture(scope='session')
def cloud_account_name(cloud_name_prefix):
    '''fixture which returns the name used to identify the cloud account'''
    return '{prefix}-0'.format(prefix=cloud_name_prefix)

@pytest.fixture(scope='session')
def sdn_account_name():
    '''fixture which returns the name used to identify the sdn account'''
    return 'sdn-0'

@pytest.fixture(scope='session')
def sdn_account_type():
    '''fixture which returns the account type used by the sdn account'''
    return 'odl'

@pytest.fixture(scope='session')
def cloud_module():
    '''Fixture containing the module which defines cloud account
    Returns:
        module to be used when configuring a cloud account
    '''
    return RwCloudYang

@pytest.fixture(scope='session')
def cloud_xpath():
    '''Fixture containing the xpath that should be used to configure a cloud account
    Returns:
        xpath to be used when configure a cloud account
    '''
    return '/cloud/account'

@pytest.fixture(scope='session')
def cloud_accounts(cloud_module, cloud_name_prefix, cloud_host, cloud_user, cloud_tenants, cloud_type):
    '''fixture which returns a list of CloudAccounts. One per tenant provided

    Arguments:
        cloud_module        - fixture: module defining cloud account
        cloud_name_prefix   - fixture: name prefix used for cloud account
        cloud_host          - fixture: cloud host address
        cloud_user          - fixture: cloud account user key
        cloud_tenants       - fixture: list of tenants to create cloud accounts on
        cloud_type          - fixture: cloud account type

    Returns:
        A list of CloudAccounts
    '''
    accounts = []
    for idx, cloud_tenant in enumerate(cloud_tenants):
        cloud_account_name = "{prefix}-{idx}".format(prefix=cloud_name_prefix, idx=idx)

        if cloud_type == 'lxc':
            accounts.append(
                    cloud_module.CloudAccount.from_dict({
                        "name": cloud_account_name,
                        "account_type": "cloudsim_proxy"})
            )
        elif cloud_type == 'openstack':
            password = 'mypasswd'
            auth_url = 'http://{cloud_host}:5000/v3/'.format(cloud_host=cloud_host)
            mgmt_network = os.getenv('MGMT_NETWORK', 'private')
            accounts.append(
                    cloud_module.CloudAccount.from_dict({
                        'name':  cloud_account_name,
                        'account_type': 'openstack',
                        'openstack': {
                            'admin': True,
                            'key': cloud_user,
                            'secret': password,
                            'auth_url': auth_url,
                            'tenant': cloud_tenant,
                            'mgmt_network': mgmt_network}})
            )
        elif cloud_type == 'mock':
            accounts.append(
                    cloud_module.CloudAccount.from_dict({
                        "name": cloud_account_name,
                        "account_type": "mock"})
            )

    return accounts


@pytest.fixture(scope='session', autouse=True)
def cloud_account(cloud_accounts):
    '''fixture which returns an instance of CloudAccount

    Arguments:
        cloud_accounts - fixture: list of generated cloud accounts

    Returns:
        An instance of CloudAccount
    '''
    return cloud_accounts[0]

@pytest.fixture(scope='class')
def openstack_client(cloud_host, cloud_user, cloud_tenant):
    """Fixture which returns a session to openstack host.

    Returns:
        Session to an openstack host.
    """
    password = 'mypasswd'
    auth_url = 'http://{cloud_host}:5000/v3/'.format(cloud_host=cloud_host)
    mgmt_network = os.getenv('MGMT_NETWORK', 'private')
    return rift.rwcal.openstack.OpenstackDriver(**{'username': cloud_user,
                                                   'password': password,
                                                   'auth_url': auth_url,
                                                   'project' : cloud_tenant,
                                                   'mgmt_network': mgmt_network,
                                                   'cert_validate': False,
                                                   'user_domain': 'Default',
                                                   'project_domain':'Default',
                                                   'region': 'RegionOne'})