package tins2020

import (
	"opslag.de/schobers/zntg/ui"
)

type Dialogs struct {
	intro    ui.Overlay
	settings ui.Overlay
	research ui.Overlay

	open string

	closed ui.Events
	opened ui.Events
}

const introDialogName = "dialog-intro"
const settingsDialogName = "dialog-settings"
const researchDialogName = "dialog-research"

func NewDialogs(game *Game) *Dialogs {
	return &Dialogs{
		intro:    NewIntro(),
		settings: &LargeDialog{},
		research: NewResearch(game),
	}
}

func (d *Dialogs) Init(ctx ui.Context) {
	overlays := ctx.Overlays()

	overlays.AddOnTop(introDialogName, d.intro, false)
	overlays.AddOnTop(settingsDialogName, d.settings, false)
	overlays.AddOnTop(researchDialogName, d.research, false)
}

func (d *Dialogs) showDialog(ctx ui.Context, name string) {
	d.Close(ctx)

	ctx.Overlays().Show(name)
	d.open = name

	d.opened.Notify(ctx, name)
}

func (d *Dialogs) Close(ctx ui.Context) {
	name := d.open
	if name == "" {
		return
	}
	ctx.Overlays().Hide(name)
	d.open = ""
	d.closed.Notify(ctx, name)
}

func (d *Dialogs) DialogClosed() ui.EventHandler { return &d.closed }
func (d *Dialogs) DialogOpened() ui.EventHandler { return &d.opened }

func (d *Dialogs) ShowIntro(ctx ui.Context) {
	d.showDialog(ctx, introDialogName)
}

func (d *Dialogs) ShowResearch(ctx ui.Context) {
	d.showDialog(ctx, researchDialogName)
}

func (d *Dialogs) ShowSettings(ctx ui.Context) {
	d.showDialog(ctx, settingsDialogName)
}