package util

import (
	"errors"
	"os"
	"runtime"
	"strings"
)

func OSVersion() (string, error) {
	switch osName := runtime.GOOS; osName {
	case "linux":
		// Implemented just in case for future. Guess if it will ever be needed
		// then a kernel version will be used to compare against.
		osRelease, err := os.ReadFile("/proc/sys/kernel/osrelease")
		if err != nil {
			return "", err
		}
		kVer := strings.Split(string(osRelease), "-")
		if len(kVer) >= 1 {
			return kVer[0], nil
		}
		return "", errors.New("malformed osrelease")
	}
	return "", errors.New("unknown OS")
}