package build

import (
	"fmt"
	"os"
	"path/filepath"
	"regexp"
	"strconv"
	"time"
)

var (
	version = "v0.0.0-0-g00000000"
	date    = "20240730T18:30:00Z"
	mode    = "dev"
	kind    = ""
	rc      = "0"
	patch   = "0"
)

var Info buildInfo

func init() {
	re := regexp.MustCompile(`v?(\d+\.\d+)(.*)-(\d+)-g([a-z0-9]{6,40})`)
	if matches := re.FindStringSubmatch(version); len(matches) == 5 {
		Info.Version = fmt.Sprintf("%s.%s%s", matches[1], patch, matches[2])
		Info.GitCommit = matches[4]
		Info.Revision, _ = strconv.Atoi(matches[3])
	}

	Info.BuildMode = mode
	Info.Kind = kind

	Info.BuildDate, _ = time.Parse("2006-01-02T15:04:05Z", date)
	Info.Name = filepath.Base(os.Args[0])
	Info.RC, _ = strconv.Atoi(rc)
}

type buildInfo struct {
	Name      string    `json:"name"`
	Kind      string    `json:"kind"`
	Version   string    `json:"version"`
	Revision  int       `json:"revision"`
	GitCommit string    `json:"git_commit"`
	BuildMode string    `json:"build_mode"`
	BuildDate time.Time `json:"build_date"`
	RC        int       `json:"rc"`
}