package main

import (
	"fmt"
	"io/ioutil"
	"log"
	"os"
	"path/filepath"
	"strconv"
)

func main() {
	files, err := ioutil.ReadDir("./originals")
	if err != nil {
		log.Fatal(err)
	}

	for i, file := range files {
		// Get original extension
		ext := filepath.Ext("./originals/"+file.Name())

		// This function moves file instead of copying
		os.Rename("./originals/"+file.Name(), "./originals/photo_"+strconv.Itoa(i)+ext)
	}

	// Inform about being done
	fmt.Println("DONE")
}