package main

import (
	"fmt"
	"log"
	"os"
	"time"

	"fyne.io/fyne/v2/app"
	"fyne.io/fyne/v2/storage"
)

func main() {
	a := app.NewWithID("com.github.vinser.t_uri")
	w := a.NewWindow("Move Files")
	doJob()
	w.Close()
}

func doJob() {
	yesterday := time.Now().Add(-24 * time.Hour).Format("2006.01.02 15:04:05")
	content := "File test content"

	// os package
	fmt.Println("os package ================")
	CreateFile("./os_source.txt", yesterday, content)
	printFileInfo("./os_source.txt")
	os.Rename("./os_source.txt", "./os_renamed.txt")
	printFileInfo("./os_renamed.txt")

	// storage package
	fmt.Println("storage package ================")
	CreateFile("./storage_source.txt", yesterday, content)
	printFileInfo("./storage_source.txt")
	storage.Move(storage.NewFileURI("./storage_source.txt"), storage.NewFileURI("./storage_moved.txt"))
	printFileInfo("./storage_moved.txt")
}

func CreateFile(name, date, content string) error {
	err := createFileWithContent(name, content)
	if err != nil {
		return err
	}
	return setFileDate(name, date)
}
func createFileWithContent(name, content string) error {
	f, err := os.Create(name)
	if err != nil {
		log.Fatal(err)
	}
	defer f.Close()
	_, err = f.WriteString(content)

	return err
}

func setFileDate(name, date string) error {
	newTime, err := time.Parse("2006.01.02 15:04:05", date)
	if err != nil {
		return err
	}
	return os.Chtimes(name, newTime, newTime)
}

func printFileInfo(name string) {
	stat, err := os.Stat(name)
	if err != nil {
		log.Fatal(err)
	}
	fmt.Println("time:", stat.ModTime(), name)
}