Improve command loading

cmd/poweron.go

@@ -1,9 +1,31 @@
 package lumecmd
 
 import (
+	"flag"
+
 	"git.kill0.net/chill9/lifx-go"
 )
 
+func NewCmdPoweron() Command {
+	return Command{
+		Name: "poweron",
+		Func: PoweronCmd,
+		Flags: func() *flag.FlagSet {
+			fs := flag.NewFlagSet("poweron", flag.ExitOnError)
+
+			duration := fs.Float64("duration", defaultDuration, "Set the duration")
+			fs.Float64Var(duration, "d", defaultDuration, "Set the duration")
+
+			selector := fs.String("selector", defaultSelector, "Set the selector")
+			fs.StringVar(selector, "s", defaultSelector, "Set the selector")
+
+			return fs
+		}(),
+		Use:   "[--selector <selector>] [--duration <sec>]",
+		Short: "Power on",
+	}
+}
+
 func PoweronCmd(args CmdArgs) (int, error) {
 	c := args.Client
 	duration := args.Flags.Float64("duration")