package linux

import (
	"errors"
	"fmt"
	"golang.org/x/sys/unix"
	"io/fs"
	"os"
	"os/exec"
)

func (cmd *LinuxCommand) isCommandExecutable(command string) (bool, error) {

	if _, err := os.Stat(command); errors.Is(err, fs.ErrNotExist) {
		return false, err
	}

	if err := unix.Access(command, unix.X_OK); err != nil {
		if !errors.Is(err, unix.EACCES) {
			return false, nil
		} else {
			return false, err
		}
	}

	return true, nil

}

func (cmd *LinuxCommand) doesCommandExist(command string) (bool, error) {

	shellCmd := exec.Command(cmd.Options.Shell, "-c", fmt.Sprintf("command -v %s", command))

	if err := shellCmd.Start(); err != nil {
		var exitErr *exec.ExitError
		if errors.As(err, &exitErr) {
			if exitErr.ExitCode() == 1 {
				return false, nil
			} else {
				return false, ErrRunningCmd
			}
		}
	}

	if err := shellCmd.Wait(); err != nil {
		var exitErr *exec.ExitError
		if errors.As(err, &exitErr) {
			if exitErr.ExitCode() == 1 {
				return false, nil
			} else {
				return false, ErrRunningCmd
			}
		}
	}

	return true, nil

}