# 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.

import datetime

from django import http
from django.core.urlresolvers import reverse
from django.utils import timezone

from mox import IsA, Func

from horizon.templatetags.sizeformat import mbformat

from openstack_dashboard import api
from openstack_dashboard import usage
from openstack_dashboard.test import helpers as test


INDEX_URL = reverse('horizon:project:overview:index')


class UsageViewTests(test.BaseAdminViewTests):
    @test.create_stubs({api.nova: ('usage_list', 'tenant_absolute_limits', ),
                        api.keystone: ('tenant_list',)})
    def test_usage(self):
        now = timezone.now()
        usage_obj = api.nova.NovaUsage(self.usages.first())
        api.keystone.tenant_list(IsA(http.HttpRequest)) \
                    .AndReturn([self.tenants.list(), False])
        api.nova.usage_list(IsA(http.HttpRequest),
                            datetime.datetime(now.year, now.month, 1, 0, 0, 0),
                            Func(usage.almost_now)) \
                            .AndReturn([usage_obj])
        api.nova.tenant_absolute_limits(IsA(http.HttpRequest))\
                           .AndReturn(self.limits['absolute'])
        self.mox.ReplayAll()
        res = self.client.get(reverse('horizon:admin:overview:index'))
        self.assertTemplateUsed(res, 'admin/overview/usage.html')
        self.assertTrue(isinstance(res.context['usage'], usage.GlobalUsage))
        self.assertContains(res,
                            '<td class="sortable normal_column">test_tenant'
                            '</td>'
                            '<td class="sortable normal_column">%s</td>'
                            '<td class="sortable normal_column">%s</td>'
                            '<td class="sortable normal_column">%s</td>'
                            '<td class="sortable normal_column">%.2f</td>'
                            '<td class="sortable normal_column">%.2f</td>' %
                            (usage_obj.vcpus,
                             usage_obj.disk_gb_hours,
                             mbformat(usage_obj.memory_mb),
                             usage_obj.vcpu_hours,
                             usage_obj.total_local_gb_usage))

    @test.create_stubs({api.nova: ('usage_list', 'tenant_absolute_limits', ),
                        api.keystone: ('tenant_list',)})
    def test_usage_csv(self):
        now = timezone.now()
        usage_obj = api.nova.NovaUsage(self.usages.first())
        api.keystone.tenant_list(IsA(http.HttpRequest)) \
                    .AndReturn([self.tenants.list(), False])
        api.nova.usage_list(IsA(http.HttpRequest),
                            datetime.datetime(now.year, now.month, 1, 0, 0, 0),
                            Func(usage.almost_now)) \
                            .AndReturn([usage_obj, usage_obj])
        api.nova.tenant_absolute_limits(IsA(http.HttpRequest))\
                           .AndReturn(self.limits['absolute'])
        self.mox.ReplayAll()
        csv_url = reverse('horizon:admin:overview:index') + "?format=csv"
        res = self.client.get(csv_url)
        self.assertTemplateUsed(res, 'admin/overview/usage.csv')
        self.assertTrue(isinstance(res.context['usage'], usage.GlobalUsage))
        hdr = 'Tenant,VCPUs,RamMB,DiskGB,Usage(Hours)'
        row = '%s,%s,%s,%s,%.2f' % (usage_obj.tenant_id,
                                  usage_obj.vcpus,
                                  usage_obj.memory_mb,
                                  usage_obj.disk_gb_hours,
                                  usage_obj.vcpu_hours)
        self.assertContains(res, '%s\n%s\n%s\n' % (hdr, row, row))