# vim: tabstop=4 shiftwidth=4 softtabstop=4

# Copyright 2012 United States Government as represented by the
# Administrator of the National Aeronautics and Space Administration.
# All Rights Reserved.
#
# Copyright 2012 Nebula, 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.

from django import http
from django.core.urlresolvers import reverse
from mox import IsA

from horizon import api
from horizon import test


class VolumeViewTests(test.TestCase):
    @test.create_stubs({api: ('tenant_quota_usages', 'volume_create',)})
    def test_create_volume(self):
        usage = {'gigabytes': {'available': 250}, 'volumes': {'available': 6}}
        formData = {'name': u'A Volume I Am Making',
                    'description': u'This is a volume I am making for a test.',
                    'method': u'CreateForm',
                    'size': 50}

        api.tenant_quota_usages(IsA(http.HttpRequest)).AndReturn(usage)
        api.volume_create(IsA(http.HttpRequest),
                          formData['size'],
                          formData['name'],
                          formData['description'])

        self.mox.ReplayAll()

        url = reverse('horizon:nova:instances_and_volumes:volumes:create')
        res = self.client.post(url, formData)

        redirect_url = reverse('horizon:nova:instances_and_volumes:index')
        self.assertRedirectsNoFollow(res, redirect_url)

    @test.create_stubs({api: ('tenant_quota_usages',)})
    def test_create_volume_gb_used_over_alloted_quota(self):
        usage = {'gigabytes': {'available': 100, 'used': 20}}
        formData = {'name': u'This Volume Is Huge!',
                    'description': u'This is a volume that is just too big!',
                    'method': u'CreateForm',
                    'size': 5000}

        api.tenant_quota_usages(IsA(http.HttpRequest)).AndReturn(usage)
        api.tenant_quota_usages(IsA(http.HttpRequest)).AndReturn(usage)

        self.mox.ReplayAll()

        url = reverse('horizon:nova:instances_and_volumes:volumes:create')
        res = self.client.post(url, formData)

        expected_error = [u'A volume of 5000GB cannot be created as you only'
                          ' have 100GB of your quota available.']
        self.assertEqual(res.context['form'].errors['__all__'], expected_error)

    @test.create_stubs({api: ('tenant_quota_usages',)})
    def test_create_volume_number_over_alloted_quota(self):
        usage = {'gigabytes': {'available': 100, 'used': 20},
                 'volumes': {'available': 0}}
        formData = {'name': u'Too Many...',
                    'description': u'We have no volumes left!',
                    'method': u'CreateForm',
                    'size': 10}

        api.tenant_quota_usages(IsA(http.HttpRequest)).AndReturn(usage)
        api.tenant_quota_usages(IsA(http.HttpRequest)).AndReturn(usage)

        self.mox.ReplayAll()

        url = reverse('horizon:nova:instances_and_volumes:volumes:create')
        res = self.client.post(url, formData)

        expected_error = [u'You are already using all of your available'
                          ' volumes.']
        self.assertEqual(res.context['form'].errors['__all__'], expected_error)

    @test.create_stubs({api: ('volume_get',), api.nova: ('server_list',)})
    def test_edit_attachments(self):
        volume = self.volumes.first()
        servers = self.servers.list()

        api.volume_get(IsA(http.HttpRequest), volume.id) \
                       .AndReturn(volume)
        api.nova.server_list(IsA(http.HttpRequest)).AndReturn(servers)

        self.mox.ReplayAll()

        url = reverse('horizon:nova:instances_and_volumes:volumes:attach',
                      args=[volume.id])
        res = self.client.get(url)
        # Asserting length of 2 accounts for the one instance option,
        # and the one 'Choose Instance' option.
        self.assertEqual(len(res.context['form'].fields['instance']._choices),
                         2)
        self.assertEqual(res.status_code, 200)

    @test.create_stubs({api: ('volume_get',),
                        api.nova: ('server_get', 'server_list',)})
    def test_edit_attachments_attached_volume(self):
        server = self.servers.first()
        volume = self.volumes.list()[0]

        api.volume_get(IsA(http.HttpRequest), volume.id) \
                       .AndReturn(volume)
        api.nova.server_list(IsA(http.HttpRequest)) \
                             .AndReturn(self.servers.list())

        self.mox.ReplayAll()

        url = reverse('horizon:nova:instances_and_volumes:volumes:attach',
                      args=[volume.id])
        res = self.client.get(url)

        self.assertEqual(res.context['form'].fields['instance']._choices[0][1],
                         "Select an instance")
        self.assertEqual(len(res.context['form'].fields['instance'].choices),
                         2)
        self.assertEqual(res.context['form'].fields['instance']._choices[1][0],
                         server.id)
        self.assertEqual(res.status_code, 200)

    @test.create_stubs({api.nova: ('volume_get', 'server_get',)})
    def test_detail_view(self):
        volume = self.volumes.first()
        server = self.servers.first()

        volume.attachments = [{"server_id": server.id}]

        api.nova.volume_get(IsA(http.HttpRequest), volume.id).AndReturn(volume)
        api.nova.server_get(IsA(http.HttpRequest), server.id).AndReturn(server)

        self.mox.ReplayAll()

        url = reverse('horizon:nova:instances_and_volumes:volumes:detail',
                      args=[volume.id])
        res = self.client.get(url)

        self.assertContains(res, "<dd>Volume name</dd>", 1, 200)
        self.assertContains(res,
                            "<dd>41023e92-8008-4c8b-8059-7f2293ff3775</dd>",
                            1,
                            200)
        self.assertContains(res, "<dd>Available</dd>", 1, 200)
        self.assertContains(res, "<dd>40 GB</dd>", 1, 200)
        self.assertContains(res, "<a href=\"/nova/instances_and_volumes/"
                                 "instances/1/detail\">server_1</a>", 1, 200)

        self.assertNoMessages()
