package kernel

import (
	"fyne.io/fyne/v2"
	"fyne.io/fyne/v2/canvas"
	"fyne.io/fyne/v2/container"
	"fyne.io/fyne/v2/theme"
	"fyne.io/fyne/v2/widget"
	"github.com/nicksnyder/go-i18n/v2/i18n"
)

type ItemsToConvertContract interface {
	Add(file *File)
	GetItems() map[int]ItemToConvertContract
	AfterAddingQueue()
}

type ItemsToConvert struct {
	nextId         int
	items          map[int]ItemToConvertContract
	itemsContainer *fyne.Container
	ffplayService  FFplayContract
	isAutoRemove   bool
}

func NewItemsToConvert(itemsContainer *fyne.Container, ffplayService FFplayContract, localizerService LocalizerContract) *ItemsToConvert {
	containerForItems := container.NewVBox()
	ItemsToConvert := &ItemsToConvert{
		nextId:         0,
		items:          map[int]ItemToConvertContract{},
		itemsContainer: containerForItems,
		ffplayService:  ffplayService,
		isAutoRemove:   true,
	}

	line := canvas.NewLine(theme.Color(theme.ColorNameFocus))
	line.StrokeWidth = 5
	checkboxAutoRemove := widget.NewCheck(localizerService.GetMessage(&i18n.LocalizeConfig{
		MessageID: "autoClearAfterAddingToQueue",
	}), func(checked bool) {
		ItemsToConvert.isAutoRemove = checked
	})
	checkboxAutoRemove.SetChecked(ItemsToConvert.isAutoRemove)
	localizerService.AddChangeCallback("autoClearAfterAddingToQueue", func(text string) {
		checkboxAutoRemove.Text = text
	})

	buttonClear := widget.NewButton(localizerService.GetMessage(&i18n.LocalizeConfig{
		MessageID: "clearAll",
	}), func() {
		ItemsToConvert.clear()
	})
	buttonClear.Importance = widget.DangerImportance
	localizerService.AddChangeCallback("clearAll", func(text string) {
		buttonClear.Text = text
	})

	itemsContainer.Add(container.NewVBox(
		container.NewPadded(),
		container.NewBorder(nil, nil, nil, buttonClear, container.NewHScroll(checkboxAutoRemove)),
		container.NewPadded(),
		line,
		container.NewPadded(),
		containerForItems,
	))

	return ItemsToConvert
}

func (items *ItemsToConvert) Add(file *File) {
	nextId := items.nextId
	var content *fyne.Container
	var buttonPlay *widget.Button

	buttonPlay = widget.NewButtonWithIcon("", theme.Icon(theme.IconNameMediaPlay), func() {
		buttonPlay.Disable()
		go func() {
			_ = items.ffplayService.Run(FFplaySetting{
				PathToFile: file.Path,
			})
			fyne.Do(func() {
				buttonPlay.Enable()
			})
		}()
	})

	buttonRemove := widget.NewButtonWithIcon("", theme.Icon(theme.IconNameDelete), func() {
		items.itemsContainer.Remove(content)
		items.itemsContainer.Refresh()
		delete(items.items, nextId)
	})
	buttonRemove.Importance = widget.DangerImportance

	content = container.NewVBox(
		container.NewBorder(
			nil,
			nil,
			buttonPlay,
			buttonRemove,
			container.NewHScroll(widget.NewLabel(file.Name)),
		),
		container.NewHScroll(widget.NewLabel(file.Path)),
		container.NewPadded(),
		canvas.NewLine(theme.Color(theme.ColorNameFocus)),
		container.NewPadded(),
	)

	items.itemsContainer.Add(content)
	items.items[nextId] = NewItemToConvert(file, content)
	items.nextId++
}

func (items *ItemsToConvert) GetItems() map[int]ItemToConvertContract {
	return items.items
}

func (items *ItemsToConvert) AfterAddingQueue() {
	if items.isAutoRemove {
		items.clear()
	}
}

func (items *ItemsToConvert) clear() {
	items.itemsContainer.RemoveAll()
	items.items = map[int]ItemToConvertContract{}
}

type ItemToConvertContract interface {
	GetFile() *File
	GetContent() *fyne.Container
}

type ItemToConvert struct {
	file    *File
	content *fyne.Container
}

func NewItemToConvert(file *File, content *fyne.Container) *ItemToConvert {
	return &ItemToConvert{
		file:    file,
		content: content,
	}
}

func (item ItemToConvert) GetFile() *File {
	return item.file
}

func (item ItemToConvert) GetContent() *fyne.Container {
	return item.content
}