package main

import (
	"log"
	"sync"

	"fyne.io/fyne/v2"
	"fyne.io/fyne/v2/app"
	"fyne.io/fyne/v2/canvas"
	"fyne.io/fyne/v2/container"
	"fyne.io/fyne/v2/driver/desktop"
	"golang.design/x/hotkey"
)

func main() {
	a := app.New()
	w := a.NewWindow("SysTray")

	icon, _ := fyne.LoadResourceFromPath("./keyboard.svg")

	if desk, ok := a.(desktop.App); ok {
		m := fyne.NewMenu("MyApp",
			fyne.NewMenuItem("Show", func() {
				w.Show()
			}))
		desk.SetSystemTrayMenu(m)
		desk.SetSystemTrayIcon(icon)
	}

	// image := canvas.NewImageFromResource(theme.ConfirmIcon())
	layer_1 := canvas.NewImageFromFile("./layer_1.png")
	layer_1.Translucency = 0.5
	layer_2 := canvas.NewImageFromFile("./layer_2.png")
	layer_2.Translucency = 0.5
	w.SetContent(container.NewPadded(layer_1))
	w.Resize(fyne.Size{
		Width:  1656 / 2,
		Height: 546 / 2,
	})

	// w.SetContent(widget.NewLabel("Fyne System Tray"))
	w.SetCloseIntercept(func() {
		w.Hide()
	})

	go func() {
		wg := sync.WaitGroup{}
		wg.Add(2)
		go func() {
			defer wg.Done()

			err := listenHotkey(
				func() { w.SetContent(container.NewPadded(layer_1)) },
				func() { w.SetContent(container.NewPadded(layer_2)) },
				hotkey.Key1,
			)
			if err != nil {
				log.Println(err)
			}
		}()
		go func() {
			defer wg.Done()

			err := listenHotkey(
				func() { w.SetContent(container.NewPadded(layer_1)) },
				func() { log.Println("up") },
				hotkey.Key2,
			)
			if err != nil {
				log.Println(err)
			}
		}()
		wg.Wait()
	}()

	w.ShowAndRun()
}

func listenHotkey(upfn func(), downfn func(), key hotkey.Key, mods ...hotkey.Modifier) (err error) {
	ms := []hotkey.Modifier{}
	ms = append(ms, mods...)
	hk := hotkey.New(ms, key)

	err = hk.Register()
	if err != nil {
		return
	}

	for {
		select {
		case <-hk.Keyup():
			go upfn()
		case <-hk.Keydown():
			go downfn()
		}
	}
}