// Copyright 2017 The Prometheus Authors
// 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.

package openstack

import (
	"context"
	"strings"
	"testing"

	"github.com/prometheus/common/model"
	"github.com/stretchr/testify/assert"
)

type OpenstackSDHypervisorTestSuite struct {
	Mock *SDMock
}

func (s *OpenstackSDHypervisorTestSuite) SetupTest(t *testing.T) {
	s.Mock = NewSDMock(t)
	s.Mock.Setup()

	s.Mock.HandleHypervisorListSuccessfully()
	s.Mock.HandleVersionsSuccessfully()
	s.Mock.HandleAuthSuccessfully()
}

func (s *OpenstackSDHypervisorTestSuite) openstackAuthSuccess() (refresher, error) {
	conf := SDConfig{
		IdentityEndpoint: s.Mock.Endpoint(),
		Password:         "test",
		Username:         "test",
		DomainName:       "12345",
		Region:           "RegionOne",
		Role:             "hypervisor",
	}
	return newRefresher(&conf, nil)
}

func TestOpenstackSDHypervisorRefresh(t *testing.T) {

	mock := &OpenstackSDHypervisorTestSuite{}
	mock.SetupTest(t)

	hypervisor, _ := mock.openstackAuthSuccess()
	ctx := context.Background()
	tgs, err := hypervisor.refresh(ctx)
	assert.Equal(t, 1, len(tgs))
	tg := tgs[0]
	assert.NoError(t, err)
	assert.NotNil(t, tg)
	assert.NotNil(t, tg.Targets)
	assert.Equal(t, 2, len(tg.Targets))

	for l, v := range map[string]string{
		"__address__":                          "172.16.70.14:0",
		"__meta_openstack_hypervisor_hostname": "nc14.cloud.com",
		"__meta_openstack_hypervisor_type":     "QEMU",
		"__meta_openstack_hypervisor_host_ip":  "172.16.70.14",
		"__meta_openstack_hypervisor_state":    "up",
		"__meta_openstack_hypervisor_status":   "enabled",
		"__meta_openstack_hypervisor_id":       "1",
	} {
		assert.Equal(t, model.LabelValue(v), tg.Targets[0][model.LabelName(l)])
	}

	for l, v := range map[string]string{
		"__address__":                          "172.16.70.13:0",
		"__meta_openstack_hypervisor_hostname": "cc13.cloud.com",
		"__meta_openstack_hypervisor_type":     "QEMU",
		"__meta_openstack_hypervisor_host_ip":  "172.16.70.13",
		"__meta_openstack_hypervisor_state":    "up",
		"__meta_openstack_hypervisor_status":   "enabled",
		"__meta_openstack_hypervisor_id":       "721",
	} {
		assert.Equal(t, model.LabelValue(v), tg.Targets[1][model.LabelName(l)])
	}
}

func TestOpenstackSDHypervisorRefreshWithDoneContext(t *testing.T) {
	mock := &OpenstackSDHypervisorTestSuite{}
	mock.SetupTest(t)

	hypervisor, _ := mock.openstackAuthSuccess()
	ctx, cancel := context.WithCancel(context.Background())
	cancel()
	_, err := hypervisor.refresh(ctx)
	assert.Error(t, err)
	assert.True(t, strings.Contains(err.Error(), context.Canceled.Error()), "%q doesn't contain %q", err, context.Canceled)
}