package cli

import (
	"context"
	"flag"
	"fmt"
	"io"

	"gitea.maximumdirect.net/eric/distributor/internal/app"
)

func runCommand(ctx context.Context, args []string, stdout, stderr io.Writer) int {
	if hasHelp(args) {
		printRunHelp(stdout)
		return exitOK
	}

	flags := flag.NewFlagSet("run", flag.ContinueOnError)
	flags.SetOutput(stderr)
	configPath := flags.String("config", "", "path to config file")
	dryRun := flags.Bool("dry-run", false, "load and validate config without publishing")
	if err := flags.Parse(args); err != nil {
		return exitUsage
	}
	if flags.NArg() > 0 {
		fmt.Fprintf(stderr, "%s: run does not accept positional arguments: %v\n", app.Name, flags.Args())
		return exitUsage
	}

	if err := app.Run(ctx, app.RunOptions{
		ConfigPath: *configPath,
		DryRun:     *dryRun,
		Stdout:     stdout,
	}); err != nil {
		return fail(stderr, err)
	}
	return exitOK
}

func printRunHelp(w io.Writer) {
	fmt.Fprint(w, `Usage:
  distributor run --config <path> --dry-run

Options:
  --config <path>  Path to config file
  --dry-run        Load and validate config without publishing

Execution behavior is not implemented yet. Dry-run currently prints a resolved
configuration summary only.
`)
}