package version

import (
	"strconv"
	"time"

	"github.com/Masterminds/semver"
)

var (
	// String gets defined by the build system.
	String = "dev"

	// Date indicates the build date.
	Date = time.Now().Format("20060102")
)

// Compiled returns the compile time of this service.
func Compiled() time.Time {
	t, _ := time.Parse("20060102", Date)
	return t
}

// GetString returns a version string with pre-releases and metadata
func GetString() string {
	return Parsed().String()
}

// Parsed returns a semver Version
func Parsed() *semver.Version {
	versionToParse := String
	if String == "dev" {
		versionToParse = "0.0.0+dev"
	}
	parsedVersion, err := semver.NewVersion(versionToParse)
	// We have no semver version but a commitid
	if err != nil {
		parsedVersion, err = semver.NewVersion("0.0.0+" + String)
		// this should never happen
		if err != nil {
			return &semver.Version{}
		}
	}
	return parsedVersion
}

// Long returns the legacy version with 4 number parts like 10.9.8.0
func Long() string {
	return strconv.FormatInt(Parsed().Major(), 10) + "." +
		strconv.FormatInt(Parsed().Minor(), 10) + "." +
		strconv.FormatInt(Parsed().Patch(), 10) + "." + "0"
}