// +build integration

package openstacktest

import (

	"fmt"

	"os"

	"github.com/gophercloud/gophercloud"

	"github.com/gophercloud/gophercloud/openstack"

	"github.com/gophercloud/gophercloud/openstack/imageservice/v2/images"

	"github.com/gophercloud/gophercloud/openstack/imageservice/v2/imagedata"

	"github.com/gophercloud/gophercloud/openstack/compute/v2/servers"

)

const WaitTimeout = 600 // in seconds

func UploadImageToOpenStack(p *gophercloud.ProviderClient, imagePath string, imageName string) (*images.Image, error) {

	client, err := openstack.NewImageServiceV2(p, gophercloud.EndpointOpts{

		Region: os.Getenv("OS_REGION_NAME"),

	})

	if err != nil {

		return nil, fmt.Errorf("Error creating ImageService client: %v", err)

	}

	// create a new image which gives us the ID

	image, err := images.Create(client, images.CreateOpts{

		Name: imageName,

		DiskFormat: "qcow2",

		ContainerFormat: "bare",

	}).Extract()

	if err != nil {

		return image, fmt.Errorf("Creating image failed: %v", err)

	}

	// then upload the actual binary data

	imageData, err := os.Open(imagePath)

	if err != nil {

		return image, fmt.Errorf("Error opening %s: %v", imagePath, err)

	}

	defer imageData.Close()

	err = imagedata.Upload(client, image.ID, imageData).ExtractErr()

	if err != nil {

		return image, fmt.Errorf("Upload to OpenStack failed: %v", err)

	}

	// wait for the status to change from Queued to Active

	err = gophercloud.WaitFor(WaitTimeout, func() (bool, error) {

		actual, err := images.Get(client, image.ID).Extract()

		return actual.Status == images.ImageStatusActive, err

	})

	if err != nil {

		return image, fmt.Errorf("Waiting for image to become Active failed: %v", err)

	}

	return image, nil

}

func DeleteImageFromOpenStack(p *gophercloud.ProviderClient, imageUUID string) error {

	client, err := openstack.NewImageServiceV2(p, gophercloud.EndpointOpts{

		Region: os.Getenv("OS_REGION_NAME"),

	})

	if err != nil {

		return fmt.Errorf("Error creating ImageService client: %v", err)

	}

	err = images.Delete(client, imageUUID).ExtractErr()

	if err != nil {

		return fmt.Errorf("cannot delete the image: %v", err)

	}

	return nil

}

func WithBootedImageInOpenStack(p *gophercloud.ProviderClient, imageID, userData string, f func(address string) error) (retErr error) {

	client, err := openstack.NewComputeV2(p, gophercloud.EndpointOpts{

		Region: os.Getenv("OS_REGION_NAME"),

	})

	if err != nil {

		return fmt.Errorf("Error creating Compute client: %v", err)

	}

	server, err := servers.Create(client, servers.CreateOpts{

		Name:      "osbuild-composer-vm-for-" + imageID,

		FlavorRef: "77b8cf27-be16-40d9-95b1-81db4522be1e", // ci.m1.medium.ephemeral

		Networks: []servers.Network{  // provider_net_cci_2

			servers.Network{UUID: "74e8faa7-87ba-41b2-a000-438013194814"},

		},

		ImageRef:  imageID,

		UserData: []byte(userData),

	}).Extract()

	if err != nil {

		return fmt.Errorf("Cannot create instance: %v", err)

	}

	// cleanup

	defer func(){

		err := servers.ForceDelete(client, server.ID).ExtractErr()

		if err != nil {

			fmt.Printf("Force deleting instance %s failed: %v", server.ID, err)

			return

		}

	}()

	// wait for the status to become Active

	err = servers.WaitForStatus(client, server.ID, "ACTIVE", WaitTimeout)

	if err != nil {

		return fmt.Errorf("Waiting for instance %s to become Active failed: %v", server.ID, err)

	}

	// get server details again to refresh the IP addresses

	server, err = servers.Get(client, server.ID).Extract()

	if err != nil {

		return fmt.Errorf("Cannot get instance details: %v\n", err)

	}

	// server.AccessIPv4 is empty so list all addresses and

	// get the first fixed one. ssh should be equally happy with v4 or v6

	var fixedIP string

	for _, networkAddresses := range server.Addresses["provider_net_cci_2"].([]interface{}) {

		address := networkAddresses.(map[string]interface{})

		if address["OS-EXT-IPS:type"] == "fixed" {

			fixedIP = address["addr"].(string)

			break

		}

	}

	if fixedIP == "" {

		return fmt.Errorf("Cannot find IP address for instance %s", server.ID)

	}

	return f(fixedIP)

}