package lib

import (
	"bytes"
	"log"
	"os"
	"os/exec"
)

func Exec(command string, envs []string) (out string, err error) {
	out, err = execInternal(command, envs, true)

	return
}

func ExecNotFatal(command string, envs []string) (out string, err error) {
	out, err = execInternal(command, envs, false)

	return
}

func execInternal(command string, envs []string, failOnError bool) (out string, err error) {
	exec := exec.Command("bash", "-c", command)

	exec.Env = os.Environ()
	exec.Env = append(exec.Env, envs...)

	var buffer bytes.Buffer
	exec.Stdout = &buffer
	exec.Stderr = &buffer

	err = exec.Run()

	if failOnError && err != nil {
		log.Fatal("can't execute, " + err.Error() + ": " + buffer.String())
	}

	out = buffer.String()

	return
}