package main

import (
	"fmt"
	"flag"
	"github.com/rackspace/gophercloud"
	"os"
)

var id = flag.String("i", "", "Server ID to get info on.  Defaults to first server in your account if unspecified.")
var rgn = flag.String("r", "DFW", "Datacenter region")
var quiet = flag.Bool("quiet", false, "Run quietly, for acceptance testing.  $? non-zero if issue.")

func main() {
	provider := os.Getenv("SDK_PROVIDER")
	username := os.Getenv("SDK_USERNAME")
	password := os.Getenv("SDK_PASSWORD")

	if (provider == "") || (username == "") || (password == "") {
		fmt.Fprintf(os.Stderr, "One or more of the following environment variables aren't set:\n")
		fmt.Fprintf(os.Stderr, "	SDK_PROVIDER=\"%s\"\n", provider)
		fmt.Fprintf(os.Stderr, "	SDK_USERNAME=\"%s\"\n", username)
		fmt.Fprintf(os.Stderr, "	SDK_PASSWORD=\"%s\"\n", password)
		os.Exit(1)
	}

	flag.Parse()

	auth, err := gophercloud.Authenticate(
		provider,
		gophercloud.AuthOptions{
			Username: username,
			Password: password,
		},
	)
	if err != nil {
		panic(err)
	}

	servers, err := gophercloud.ServersApi(auth, gophercloud.ApiCriteria{
		Name:      "cloudServersOpenStack",
		Region:    *rgn,
		VersionId: "2",
		UrlChoice: gophercloud.PublicURL,
	})
	if err != nil {
		panic(err)
	}

	serverId := ""
	if *id == "" {
		ss, err := servers.ListServers()
		if err != nil {
			panic(err)
		}
		// We could just cheat and dump the server details from ss[0].
		// But, that tests ListServers(), and not ServerById().  So, we
		// elect not to cheat.
		serverId = ss[0].Id
	} else {
		serverId = *id
	}

	s, err := servers.ServerById(serverId)
	if err != nil {
		panic(err)
	}

	configs := []string {
		"Access IPv4: %s\n",
		"Access IPv6: %s\n",
		"    Created: %s\n",
		"     Flavor: %s\n",
		"    Host ID: %s\n",
		"         ID: %s\n",
		"      Image: %s\n",
		"       Name: %s\n",
		"   Progress: %s\n",
		"     Status: %s\n",
		"  Tenant ID: %s\n",
		"    Updated: %s\n",
		"    User ID: %s\n",
	}

	values := []string {
		s.AccessIPv4,
		s.AccessIPv6,
		s.Created,
		s.Flavor.Id,
		s.HostId,
		s.Id,
		s.Image.Id,
		s.Name,
		fmt.Sprintf("%d", s.Progress),
		s.Status,
		s.TenantId,
		s.Updated,
		s.UserId,
	}

	if !*quiet {
		fmt.Println("Server info:")
		for i, _ := range configs {
			fmt.Printf(configs[i], values[i])
		}
	}
}