package define

import (
	"runtime"
	"strconv"
	"time"

	podmanVersion "github.com/containers/podman/v2/version"
)

// Overwritten at build time
var (
	// GitCommit is the commit that the binary is being built from.
	// It will be populated by the Makefile.
	gitCommit string
	// BuildInfo is the time at which the binary was built
	// It will be populated by the Makefile.
	buildInfo string
)

// Version is an output struct for varlink
type Version struct {
	APIVersion int64
	Version    string
	GoVersion  string
	GitCommit  string
	BuiltTime  string
	Built      int64
	OsArch     string
}

// GetVersion returns a VersionOutput struct for varlink and podman
func GetVersion() (Version, error) {
	var err error
	var buildTime int64
	if buildInfo != "" {
		// Converts unix time from string to int64
		buildTime, err = strconv.ParseInt(buildInfo, 10, 64)

		if err != nil {
			return Version{}, err
		}
	}
	return Version{
		APIVersion: podmanVersion.APIVersion,
		Version:    podmanVersion.Version,
		GoVersion:  runtime.Version(),
		GitCommit:  gitCommit,
		BuiltTime:  time.Unix(buildTime, 0).Format(time.ANSIC),
		Built:      buildTime,
		OsArch:     runtime.GOOS + "/" + runtime.GOARCH,
	}, nil
}