package ui

import (
	"fmt"
	"os"
	"proxy_socks5/service"
	"regexp"
	"strconv"

	"fyne.io/fyne/v2"
	"fyne.io/fyne/v2/app"
	"fyne.io/fyne/v2/container"
	"fyne.io/fyne/v2/widget"
)

const reg = "^[0-9]*[1-9][0-9]*$"

type UI struct {
	Options *Options
	mw      *fyne.Window
}

func New(op ...Option) GUIApp {
	opts := &Options{}
	for _, o := range op {
		o(opts)
	}
	if err := opts.Validate(); err != nil {
		panic(fmt.Errorf("init ui failed: %v", err))
	}

	//fyne
	a := app.New()
	w := a.NewWindow(fmt.Sprintf("%v %v", opts.Name, opts.Version))

	var port string
	label := widget.NewLabel("")
	label.Hidden = true
	input := widget.NewEntry()
	input.SetPlaceHolder("Please Input The Port...")
	w.SetContent(container.NewVBox(
		label,
		input,
		widget.NewButton("Listen", func() {
			port = input.Text
			r, _ := regexp.Compile(reg)
			if r.MatchString(port) { //是数字
				i, _ := strconv.ParseInt(port, 10, 64)
				if 1 < 0 || i > 65535 {
					port = "1080"
				}
			} else { //否则
				port = "1080"
			}
			input.Hidden = true
			label.Hidden = false
			label.TextStyle.Bold = true
			label.SetText(fmt.Sprintf("Listening at %v Succeed!!!", port))
			service.RunServe(port)
		}),
	))

	w.Resize(fyne.NewSize(240, 100))

	return &UI{
		Options: opts,
		mw:      &w,
	}
}

func (u *UI) Run(exitCh chan os.Signal) int {
	window := *u.mw
	window.ShowAndRun()
	return 0
}
func (u *UI) Close() {
	window := *u.mw
	window.Close()
}