Add server rebuild command

completion.go

@@ -79,7 +79,7 @@ const (
 			hcloud_server_reset | hcloud_server_reset-password | \
 			hcloud_server_shutdown | hcloud_server_disable-rescue | \
 			hcloud_server_enable-rescue | hcloud_server_detach-iso | \
-			hcloud_server_update )
+			hcloud_server_update | hcloud_server_rebuild )
 				__hcloud_server_names
 				return
 				;;

server.go

@@ -29,6 +29,7 @@ func newServerCommand(cli *CLI) *cobra.Command {
 		newServerDetachISOCommand(cli),
 		newServerUpdateCommand(cli),
 		newServerChangeTypeCommand(cli),
+		newServerRebuildCommand(cli),
 	)
 	return cmd
 }

server_rebuild.go

@@ -0,0 +1,61 @@
+package cli
+
+import (
+	"fmt"
+
+	"github.com/hetznercloud/hcloud-go/hcloud"
+	"github.com/spf13/cobra"
+)
+
+func newServerRebuildCommand(cli *CLI) *cobra.Command {
+	cmd := &cobra.Command{
+		Use:                   "rebuild [FLAGS] SERVER",
+		Short:                 "Rebuild a server",
+		Args:                  cobra.ExactArgs(1),
+		TraverseChildren:      true,
+		DisableFlagsInUseLine: true,
+		RunE: cli.wrap(runServerRebuild),
+	}
+
+	cmd.Flags().String("image", "", "ID or name of image to rebuild from")
+	cmd.Flag("image").Annotations = map[string][]string{
+		cobra.BashCompCustom: {"__hcloud_image_names"},
+	}
+	cmd.MarkFlagRequired("image")
+
+	return cmd
+}
+
+func runServerRebuild(cli *CLI, cmd *cobra.Command, args []string) error {
+	serverIDOrName := args[0]
+	server, _, err := cli.Client().Server.Get(cli.Context, serverIDOrName)
+	if err != nil {
+		return err
+	}
+	if server == nil {
+		return fmt.Errorf("server not found: %s", serverIDOrName)
+	}
+
+	imageIDOrName, _ := cmd.Flags().GetString("image")
+	image, _, err := cli.Client().Image.Get(cli.Context, imageIDOrName)
+	if err != nil {
+		return err
+	}
+	if image == nil {
+		return fmt.Errorf("image not found: %s", imageIDOrName)
+	}
+
+	opts := hcloud.ServerRebuildOpts{
+		Image: image,
+	}
+	action, _, err := cli.Client().Server.Rebuild(cli.Context, server, opts)
+	if err != nil {
+		return err
+	}
+	errCh, _ := waitAction(cli.Context, cli.Client(), action)
+	if err := <-errCh; err != nil {
+		return err
+	}
+	fmt.Printf("Server %s rebuilt with image %s\n", serverIDOrName, imageIDOrName)
+	return nil
+}