package util

import (
	"fmt"
	"runtime"
)

type Version struct {
	GitVersion   string `json:"gitVersion"`
	GitCommit    string `json:"gitCommit"`
	GitTreeState string `json:"gitTreeState"`
	GoVersion    string `json:"goVersion"`
	Compiler     string `json:"compiler"`
	Platform     string `json:"platform"`
}

// This variable block holds information used to build up the version string
var (
	AppGitState  = ""
	AppGitCommit = ""
	AppVersion   = "canary"
)

func VersionInfo() Version {
	return Version{
		GitVersion:   AppVersion,
		GitCommit:    AppGitCommit,
		GitTreeState: AppGitState,
		GoVersion:    runtime.Version(),
		Compiler:     runtime.Compiler,
		Platform:     fmt.Sprintf("%s/%s", runtime.GOOS, runtime.GOARCH),
	}
}

func version() string {
	v := AppVersion
	if AppVersion == "canary" && AppGitCommit != "" {
		v += "-" + AppGitCommit
	}
	if AppGitState != "" {
		v += fmt.Sprintf(" (%v)", AppGitState)
	}
	return v
}