package game

import (
	"image/color"
	"openquell/assets"

	"github.com/ebitenui/ebitenui"
	"github.com/ebitenui/ebitenui/image"
	"github.com/ebitenui/ebitenui/widget"
	"github.com/hajimehoshi/ebiten/v2"
)

type WelcomeScene struct {
	Game     *Game
	Next     SceneName
	Whoami   SceneName
	UseCache bool
	Ui       *ebitenui.UI
}

func NewWelcomeScene(game *Game) Scene {
	scene := &WelcomeScene{Whoami: Welcome, Game: game, Next: Welcome}
	scene.SetupUI()
	return scene
}

func (scene *WelcomeScene) SetNext(next SceneName) {
	scene.Next = next
}

func (scene *WelcomeScene) GetNext() SceneName {
	return scene.Next
}

func (scene *WelcomeScene) Update() error {
	switch {
	case ebiten.IsKeyPressed(ebiten.KeyEnter):
		scene.SetNext(Select)
	}

	scene.Ui.Update()

	return nil
}

func (scene *WelcomeScene) Draw(screen *ebiten.Image) {
	screen.Clear()

	scene.Ui.Draw(screen)
	/*
		op := &ebiten.DrawImageOptions{}

		background := assets.Assets["background-lila"]
		screen.DrawImage(background, op)

		blue := color.RGBA{0, 255, 128, 255}

		assets.FontRenderer.Renderer.SetTarget(screen)
		assets.FontRenderer.Renderer.SetColor(blue)
		assets.FontRenderer.Renderer.SetAlign(etxt.YCenter, etxt.XCenter)
		assets.FontRenderer.Renderer.SetSizePx(45)
		assets.FontRenderer.Renderer.Draw("Welcome to Open Quell!", 320, 200)

		assets.FontRenderer.Renderer.SetAlign(etxt.Top, etxt.Left)
		assets.FontRenderer.Renderer.SetSizePx(32)
		assets.FontRenderer.Renderer.Draw("[press enter to start]", 100, 300)
	*/
}

func (scene *WelcomeScene) SetupUI() {
	buttonImage, _ := loadButtonImage()
	background := assets.Assets["background-lila"]
	blue := color.RGBA{0, 255, 128, 255}

	uiContainer := widget.NewContainer(
		widget.ContainerOpts.BackgroundImage(
			image.NewNineSlice(background, [3]int{0, 1, 639}, [3]int{0, 1, 479})),
		widget.ContainerOpts.Layout(widget.NewAnchorLayout()),
	)

	rowContainer := widget.NewContainer(
		widget.ContainerOpts.WidgetOpts(
			widget.WidgetOpts.LayoutData(widget.AnchorLayoutData{
				HorizontalPosition: widget.AnchorLayoutPositionCenter,
				VerticalPosition:   widget.AnchorLayoutPositionCenter,
			}),
		),
		widget.ContainerOpts.Layout(widget.NewRowLayout(
			widget.RowLayoutOpts.Direction(widget.DirectionVertical),
			widget.RowLayoutOpts.Padding(widget.NewInsetsSimple(20)),
			widget.RowLayoutOpts.Spacing(20),
		)),
	)

	button := widget.NewButton(
		widget.ButtonOpts.WidgetOpts(
			widget.WidgetOpts.LayoutData(widget.RowLayoutData{
				Position:  widget.RowLayoutPositionCenter,
				Stretch:   false,
				MaxWidth:  200,
				MaxHeight: 100,
			}),
		),

		widget.ButtonOpts.Image(buttonImage),

		widget.ButtonOpts.Text("Start", *assets.FontRenderer.FontNormal, &widget.ButtonTextColor{
			Idle: color.NRGBA{0xdf, 0xf4, 0xff, 0xff},
		}),

		widget.ButtonOpts.TextPadding(widget.Insets{
			Left:   30,
			Right:  30,
			Top:    5,
			Bottom: 5,
		}),

		widget.ButtonOpts.ClickedHandler(func(args *widget.ButtonClickedEventArgs) {
			scene.SetNext(Play)
		}),
	)

	label := widget.NewText(
		widget.TextOpts.Text("Welcome to OpenQuell", *assets.FontRenderer.FontBig, blue),
		widget.TextOpts.Position(widget.TextPositionCenter, widget.TextPositionCenter),
	)

	rowContainer.AddChild(label)
	rowContainer.AddChild(button)

	uiContainer.AddChild(rowContainer)

	scene.Ui = &ebitenui.UI{
		Container: uiContainer,
	}
}