photo rename

main.go

package main

import (
	"fmt"
	"log"
	"os"
	"path/filepath"
	"strings"
	"time"

	"github.com/rwcarlsen/goexif/exif"
	ptime "github.com/yaa110/go-persian-calendar"
)

type Photo struct {
	fileName     string
	filePath     string
	ext          string
	date         time.Time
	persianDate  ptime.Time
	newFileName  string
	persianYear  string
	persianMonth string
}

var dayOfWeek = [7]string{
	"0Shan",
	"1Shan",
	"2Shan",
	"3Shan",
	"4Shan",
	"5Shan",
	"6Jome",
}

func getPhotoDate(file string) time.Time {

	f, err := os.Open(file)
	if err != nil {
		log.Fatal(err)
	}

	pic, err := exif.Decode(f)
	if err != nil {
		fmt.Println(err)
		os.Exit(1)
	}
	time, _ := pic.DateTime()
	return time
}
func process(photo Photo) Photo {
	photo.persianDate = dateToPersianDate(photo.date)
	photo.newFileName = persianDateToString(photo.persianDate)
	photo.persianYear = photo.persianDate.Year()
	photo.persianMonth = photo.persianDate.Month()

	return strings.Replace(date, "*", dayOfWeek[int(pt.Weekday())], -1)
}

func dateToPersianDate(date time.Time) ptime.Time {
	d := time.Date(date.Year(), date.Month(), date.Day(), date.Hour(), date.Minute(), date.Second(), 0, ptime.Iran())
	return ptime.New(d)
}

func persianDateToString(date ptime.Time) string {
	date := date.Format("yyyy-MM-dd_*_HH-mm-ss")
	return strings.Replace(date, "*", dayOfWeek[int(pt.Weekday())], -1)
}

func main() {
	var files []string

	root := "."
	err := filepath.Walk(root, visit(&files))
	if err != nil {
		panic(err)
	}
	for _, file := range files {

		fmt.Println(dateToPersianDate(getPhotoDate(file)))

	}
}

func visit(files *[]string) filepath.WalkFunc {
	return func(path string, info os.FileInfo, err error) error {
		if err != nil {
			log.Fatal(err)
		}
		if info.Mode().IsRegular() {
			if strings.HasSuffix(strings.ToLower(info.Name()), ".jpg") || strings.HasSuffix(strings.ToLower(info.Name()), ".jpeg") {
				*files = append(*files, path)
			}
		}
		return nil
	}
}