package cli

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

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

func validateCommand(ctx context.Context, args []string, stdout, stderr io.Writer) int {
	if hasHelp(args) {
		printValidateHelp(stdout)
		return exitOK
	}
	flags := flag.NewFlagSet("validate", flag.ContinueOnError)
	flags.SetOutput(stderr)
	formatFlag := addFormatFlag(flags)
	if err := flags.Parse(args); err != nil {
		return exitUsage
	}
	format, ok := parseOutputFormat(stderr, "validate", *formatFlag)
	if !ok {
		return exitUsage
	}
	path, ok := parseOptionalPathArg(stderr, "validate", flags.Args())
	if !ok {
		return exitUsage
	}
	if err := app.Validate(ctx, app.ValidateOptions{Path: path, Stdout: stdout, OutputFormat: format}); err != nil {
		return fail(stderr, err)
	}
	return exitOK
}

func printValidateHelp(w io.Writer) {
	fmt.Fprint(w, `Usage:
  distributor validate [--format text|json] <path>

Options:
  --format text|json  Output format

Validate a local source bundle directory or a tree containing source bundles.
`)
}