package framework

import (
	"freeCaculator/global"
	"fyne.io/fyne/v2"
	"fyne.io/fyne/v2/cmd/fyne_demo/tutorials"
	"fyne.io/fyne/v2/container"
	"fyne.io/fyne/v2/layout"
	"fyne.io/fyne/v2/theme"
	"fyne.io/fyne/v2/widget"
)

/*
*
@author: sre
@date: 2022/8/22 0022
@desc: todo
*
*/

func ShowNav(w fyne.Window) {
	a := fyne.CurrentApp()
	content := container.NewMax()
	title := widget.NewLabel("组件名称")
	intro := widget.NewLabel("An introduction would probably go\nhere, as well as a")
	intro.Wrapping = fyne.TextWrapWord
	setTutorial := func(t tutorials.Tutorial) {
		if fyne.CurrentDevice().IsMobile() {
			child := a.NewWindow(t.Title)
			global.TopWindow = child
			child.SetContent(t.View(global.TopWindow))
			child.Show()
			child.SetOnClosed(func() {
				global.TopWindow = w
			})
			return
		}

		title.SetText(t.Title)
		intro.SetText(t.Intro)

		content.Objects = []fyne.CanvasObject{t.View(w)}
		content.Refresh()
	}

	tutorial := container.NewBorder(
		container.NewVBox(title, widget.NewSeparator(), intro), nil, nil, nil, content)
	// 设置窗口内容
	if fyne.CurrentDevice().IsMobile() {
		w.SetContent(makeNav(setTutorial, false))
	} else {
		split := container.NewHSplit(makeNav(setTutorial, true), tutorial)
		split.Offset = 0.2
		w.SetContent(split)
	}

}

func makeNav(setTutorial func(tutorial tutorials.Tutorial), loadPrevious bool) fyne.CanvasObject {
	a := fyne.CurrentApp()

	tree := &widget.Tree{
		ChildUIDs: func(uid string) []string {
			return tutorials.TutorialIndex[uid]
		},
		IsBranch: func(uid string) bool {
			children, ok := tutorials.TutorialIndex[uid]

			return ok && len(children) > 0
		},
		CreateNode: func(branch bool) fyne.CanvasObject {
			return widget.NewLabel("Collection Widgets")
		},
		UpdateNode: func(uid string, branch bool, obj fyne.CanvasObject) {
			t, ok := tutorials.Tutorials[uid]
			if !ok {
				fyne.LogError("Missing tutorial panel: "+uid, nil)
				return
			}
			obj.(*widget.Label).SetText(t.Title)
		},
		OnSelected: func(uid string) {
			if t, ok := tutorials.Tutorials[uid]; ok {
				a.Preferences().SetString(global.PreferenceCurrentTutorial, uid)
				setTutorial(t)
			}
		},
	}

	if loadPrevious {
		currentPref := a.Preferences().StringWithFallback(global.PreferenceCurrentTutorial, "欢迎")
		tree.Select(currentPref)
	}

	themes := container.New(layout.NewGridLayout(2),
		widget.NewButton("Dark", func() {
			a.Settings().SetTheme(theme.DarkTheme())
		}),
		widget.NewButton("Light", func() {
			a.Settings().SetTheme(theme.LightTheme())
		}),
	)

	return container.NewBorder(nil, themes, nil, nil, tree)
}