# Copyright 2017 ZTE Corporation.
#
# 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 json

import mock
from django.test import TestCase
from rest_framework import status
from rest_framework.test import APIClient
from lcm.nf.const import vnfpackage_info
from lcm.pub.database.models import NfInstModel, JobStatusModel
from lcm.pub.utils import restcall
from lcm.pub.utils.timeutil import now_time
import uuid


class TestNFInstantiate(TestCase):
    def setUp(self):
        self.client = APIClient()
        self.grant_result = {
            "vimid": 'vimid_1',
            "tenant": 'tenantname_1'
        }

    def tearDown(self):
        pass

    def assert_job_result(self, job_id, job_progress, job_detail):
        jobs = JobStatusModel.objects.filter(jobid=job_id,
                                             progress=job_progress,
                                             descp=job_detail)
        self.assertEqual(1, len(jobs))

    def test_create_vnf_identifier_when_vnf_is_exist(self):
        NfInstModel.objects.create(nfinstid='1111',
                                   nf_name='vFW_01',
                                   package_id='222',
                                   version='',
                                   vendor='',
                                   netype='',
                                   vnfd_model='',
                                   status='NOT_INSTANTIATED',
                                   nf_desc='vFW in Nanjing TIC Edge',
                                   vnfdid='111',
                                   create_time=now_time())
        data = {
            "vnfdId": "111",
            "vnfInstanceName": "vFW_01",
            "vnfInstanceDescription": "vFW in Nanjing TIC Edge"
        }
        response = self.client.post("/api/vnflcm/v1/vnf_instances", data=data, format='json')
        self.failUnlessEqual(status.HTTP_500_INTERNAL_SERVER_ERROR, response.status_code)
        context = json.loads(response.content)
        self.assertEqual({'error': 'VNF is already exist.'}, context)

    @mock.patch.object(restcall, 'call_req')
    @mock.patch.object(uuid, 'uuid4')
    def test_create_vnf_identifier(self, mock_uuid4, mock_call_req):
        r2_get_vnfpackage_from_catalog = [0, json.JSONEncoder().encode(vnfpackage_info), '200']
        mock_call_req.return_value = r2_get_vnfpackage_from_catalog
        mock_uuid4.return_value = "1"
        data = {
            "vnfdId": "111",
            "vnfInstanceName": "vFW_01",
            "vnfInstanceDescription": "vFW in Nanjing TIC Edge"
        }
        response = self.client.post("/api/vnflcm/v1/vnf_instances", data=data, format='json')
        expect_data = {"id": "1", "vnfProvider": "huawei", "vnfdVersion": "1.0", "vnfPkgId": "111"}
        self.assertEqual(expect_data, response.data)