fleetctl: Add command to show id

Add a command that either shows the current id or transforms the given id.

Signed-off-by: Heathcliff <[email protected]>

pkg/fleetctl/appid.go

@@ -0,0 +1,41 @@
+package fleetctl
+
+import (
+	"fmt"
+
+	"github.com/heathcliff26/fleetlock/pkg/client"
+	systemdutils "github.com/heathcliff26/fleetlock/pkg/systemd-utils"
+	"github.com/spf13/cobra"
+)
+
+const flagNameMachineID = "machine-id"
+
+// Create a new id command
+func NewIDCommand() *cobra.Command {
+	cmd := &cobra.Command{
+		Use:   "id",
+		Short: "display this node zincati app id",
+		RunE: func(cmd *cobra.Command, _ []string) error {
+			input, err := cmd.Flags().GetString(flagNameMachineID)
+			if err != nil {
+				return err
+			}
+
+			var id string
+			if input == "" {
+				id, err = client.GetZincateAppID()
+			} else {
+				id, err = systemdutils.ZincatiMachineID(input)
+			}
+			if err != nil {
+				exitError(cmd, err)
+			}
+			fmt.Println(id)
+
+			return nil
+		},
+	}
+	cmd.Flags().StringP(flagNameMachineID, "i", "", "Specify the id to transform")
+
+	return cmd
+}

pkg/fleetctl/root.go

@@ -25,6 +25,7 @@ func NewRootCommand() *cobra.Command {
 	rootCmd.AddCommand(
 		NewLockCommand(),
 		NewReleaseCommand(),
+		NewIDCommand(),
 		version.NewCommand(Name),
 	)