Creating Lots of Subcommands

package main
 
import (
	"context"
	"fmt"
	"os"
 
	"github.com/hedzr/cmdr-loaders/local"
	"github.com/hedzr/cmdr-tests/examples/common"
	"github.com/hedzr/cmdr-tests/examples/common/cmd"
	"github.com/hedzr/cmdr/v2"
	"github.com/hedzr/cmdr/v2/cli"
	logz "github.com/hedzr/logg/slog"
	"github.com/hedzr/store"
)
 
const (
	appName = "lots-subcmds"
)
 
func main() {
	app := chain(common.PrepareApp(
		appName,
 
		// use an option store explicitly, or a dummy store by default
		cmdr.WithStore(store.New()),
 
		// import "github.com/hedzr/cmdr-loaders/local" to get in advanced external loading features
		cmdr.WithExternalLoaders(
			local.NewConfigFileLoader(
				local.WithAlternateWriteBack(false), // disable write-back the modified state into alternative config file
				local.WithAlternateDotPrefix(false), // use '<app-name>.toml' instead of '.<app-name>.toml'
			),
			local.NewEnvVarLoader(),
		),
	)(cmd.Commands...))
 
	ctx := context.Background() // with cancel can be passed thru in your actions
	if err := app.Run(ctx); err != nil {
		logz.ErrorContext(ctx, "Application Error:", "err", err) // stacktrace if in debug mode/build
		os.Exit(app.SuggestRetCode())
	} else if rc := app.SuggestRetCode(); rc != 0 {
		os.Exit(rc)
	}
}
 
func chain(app cli.App) cli.App {
	app.Cmd("subcmd").
		Description("subcommands here").
		With(func(b cli.CommandBuilder) {
			for i := 0; i < 5; i++ {
				b.Cmd(fmt.Sprintf("sub-%d", i)).
					Description(fmt.Sprintf("subcommand-%d here", i)).
					With(func(b cli.CommandBuilder) {
						for j := 0; j < 3; j++ {
							b.Cmd(fmt.Sprintf("sub-%d-sub-%d", i, j)).
								Description(fmt.Sprintf("sub-%d-subcommand=%d here", i, j)).
								With(func(b cli.CommandBuilder) {})
						}
					})
			}
		})
	return app
}