add scene list subcommand.

cmd/lucy/scenecmd.go

@@ -19,6 +19,16 @@ func sceneCmd(
 	cmd := parseCommand(os.Args[2:])
 
 	switch cmd.Name {
+	case "list":
+		{
+			scenes, err := c.GetScenes(ctx)
+			if err != nil {
+				log.Fatalln("Failed to load scenes:", err)
+			}
+
+			WriteSceneTable(os.Stdout, scenes)
+		}
+
 	case "create", "update":
 		{
 			fileName := cmd.Params.Get(0).String()

cmd/lucy/tables.go

@@ -94,6 +94,24 @@ func WriteDeviceInfoTable(w io.Writer, devices []models.Device) {
 	table.Render()
 }
 
+func WriteSceneTable(w io.Writer, scenes []models.Scene) {
+	table := tablewriter.NewWriter(w)
+	table.SetHeader([]string{"ID", "NAME", "ROLES", "INTERVAL"})
+
+	table.SetReflowDuringAutoWrap(false)
+
+	for _, v := range scenes {
+		table.Append([]string{
+			fmt.Sprint(v.ID),
+			v.Name,
+			fmt.Sprint(len(v.Roles)),
+			fmt.Sprint(v.IntervalMS),
+		})
+	}
+
+	table.Render()
+}
+
 func WriteHandlerInfoTable(w io.Writer, handlers []models.EventHandler) {
 	table := tablewriter.NewWriter(w)
 	table.SetHeader([]string{"ID", "EVENT NAME", "PRIORITY", "CONDITIONS", "TARGET", "ACTION"})