package main

import (
	"fmt"
	"log"
	"os/exec"
	"strings"
)

// 1.0.0-dev
const (
	VERSION_MAJ = 1
	VERSION_MIN = 0
	VERSION_PAT = 0
	VERSION_TAG = "dev"
)

func GitVersion() string {
	var (
		cmd    *exec.Cmd
		err    error
		stdout []byte
	)
	cmd = exec.Command("git", "describe",
		"--abbrev=8",
		"--long",
		"--tags",
		"--dirty",
		"--always",
		"--match",
		"v[0-9]*")
	stdout, err = cmd.Output()
	if err != nil {
		log.Println("Err (GitVersion):", err)
		return ""
	}
	return strings.TrimSpace(string(stdout))
}

func Version() string {
	var hash string = GitVersion()
	if hash != "" {
		return fmt.Sprintf("%d.%d.%d-%s#%s", VERSION_MAJ, VERSION_MIN, VERSION_PAT, VERSION_TAG, hash)
	}
	return fmt.Sprintf("%d.%d.%d-%s", VERSION_MAJ, VERSION_MIN, VERSION_PAT, VERSION_TAG)
}