package main

import (
	"fmt"
	"os/exec"
	"strings"
	"syscall"
)

func getExitCode(err error) (int, error) {
	exitCode := 0
	if exiterr, ok := err.(*exec.ExitError); ok {
		if procExit := exiterr.Sys().(syscall.WaitStatus); ok {
			return procExit.ExitStatus(), nil
		}
	}
	return exitCode, fmt.Errorf("failed to get exit code")
}

func processExitCode(err error) (exitCode int) {
	if err != nil {
		var exiterr error
		if exitCode, exiterr = getExitCode(err); exiterr != nil {
			// TODO: Fix this so we check the error's text.
			// we've failed to retrieve exit code, so we set it to 127
			exitCode = 127
		}
	}
	return
}

func runCommandWithOutput(cmd *exec.Cmd) (output string, exitCode int, err error) {
	exitCode = 0
	out, err := cmd.CombinedOutput()
	exitCode = processExitCode(err)
	output = string(out)
	return

}

func stripTrailingCharacters(target string) string {
	target = strings.Trim(target, "\n")
	target = strings.Trim(target, " ")
	return target
}