make depfn optional

appcli.go

@@ -28,8 +28,8 @@ func DepList(deps ...*app.Module) DepFn {
 // is overriden to ensure that all dependencies are satisfied before the command
 // is executed. Requires an app.Lifecycle to be present in the context when the
 // command is executed.
-func NewCommand(cmdcfg *cli.Command, depfn DepFn) *cli.Command {
-	if depfn == nil {
+func NewCommand(cmdcfg *cli.Command, depfn ...DepFn) *cli.Command {
+	if len(depfn) == 0 {
 		return cmdcfg
 	}
 
@@ -49,14 +49,25 @@ func NewCommand(cmdcfg *cli.Command, depfn DepFn) *cli.Command {
 			return ctx, errors.New("lifecycle not found in context, cannot run command with dependencies")
 		}
 
-		deps, err := depfn(lifecycle, cmd)
+		deps := make([]*app.Module, 0)
+		for _, fn := range depfn {
+			if fn == nil {
+				continue
+			}
+
+			modules, err := fn(lifecycle, cmd)
 			if err != nil {
 				return ctx, err
 			}
+			deps = append(deps, modules...)
+		}
 
+		if len(deps) > 0 {
 			if err := lifecycle.Require(deps...); err != nil {
 				return ctx, err
 			}
+		}
+
 		return ctx, nil
 	}
 
@@ -66,13 +77,13 @@ func NewCommand(cmdcfg *cli.Command, depfn DepFn) *cli.Command {
 // NewRootCommand creates a new root CLI command with the specified configuration.
 // Adds verbose flag and override Before and After methods to handle dependencies.
 // See NewCommand for more details.
-func NewRootCommand(cmdcfg *cli.Command, depfn DepFn) *cli.Command {
+func NewRootCommand(cmdcfg *cli.Command, depfn ...DepFn) *cli.Command {
 	cmdcfg.Flags = append(cmdcfg.Flags, &cli.BoolFlag{
 		Name:    "verbose",
 		Aliases: []string{"v"},
 		Usage:   "Enable verbose output",
 	})
-	return NewCommand(cmdcfg, depfn)
+	return NewCommand(cmdcfg, depfn...)
 }
 
 // VerboseFromCommand checks if the verbose flag is set in the command context.