package command

import (
	"errors"
	"fmt"
)

var (
	ErrInvalidArg = errors.New("invalid argument")
)

type Command interface {
	Do(args []string) (bool, error)
}

type CLI struct {
	Commands []Command
}

func (cli *CLI) Run(args []string) error {
	for _, c := range cli.Commands {
		worked, err := c.Do(args)
		if err != nil {
			return err
		}
		if worked {
			return nil
		}
	}

	return fmt.Errorf("could not find matchin command")
}