package components

import (
	"fmt"

	"github.com/urfave/cli/v2"
	"go-micro.dev/v4/logger"
)

func FilterDuplicateFlags(flags []cli.Flag) []cli.Flag {
	flagMap := make(map[string]cli.Flag, 0)

	for _, f := range flags {
		if _, ok := flagMap[f.Names()[0]]; !ok {
			flagMap[f.Names()[0]] = f
		} else {
			logger.Warn(fmt.Sprintf("Duplicated flag '%s' found", f.Names()[0]))
		}
	}

	result := make([]cli.Flag, len(flagMap))
	i := 0
	for _, f := range flagMap {
		result[i] = f
		i += 1
	}

	return result
}