package main

import (
	"math"
	"time"

	ui "github.com/VladimirMarkelov/clui"
)

type CheckDialog struct {
	View *ui.Window

	result      int
	beforeClose func(ui.Event)
	onClose     func()
}

func CreateCheckDialog(title, username, password string) *CheckDialog {
	dlg := new(CheckDialog)

	sWidth, sHeight := ui.ScreenSize()
	wWidth, wHeight := 40, 5
	dlg.View = ui.AddWindow(sWidth/2-wWidth/2, sHeight/2-wHeight/2, wWidth, wHeight, title)
	ui.WindowManager().BeginUpdate()
	defer ui.WindowManager().EndUpdate()

	dlg.View.SetModal(true)
	dlg.View.SetSizable(false)
	dlg.View.SetTitleButtons(ui.ButtonDefault)
	dlg.View.SetPack(ui.Vertical)

	textfrm := ui.CreateFrame(dlg.View, 1, 1, ui.BorderNone, ui.Fixed)
	textfrm.SetPaddings(1, 1)
	textfrm.SetPack(ui.Vertical)
	textfrm.SetGaps(2, 1)
	ui.CreateLabel(textfrm, ui.AutoSize, ui.AutoSize, "            Please wait", ui.Fixed)

	progress := ui.CreateProgressBar(textfrm, ui.AutoSize, ui.AutoSize, 1)
	progress.SetLimits(0, 100)

	ui.CreateLabel(textfrm, ui.AutoSize, ui.AutoSize, "Connecting to login server...", ui.Fixed)

	dlg.View.OnKeyDown(func(ev ui.Event, data interface{}) bool {
		if ev.Key == 0 && ev.Msg == "login-complete" {
			if dlg.beforeClose != nil {
				dlg.beforeClose(ev)
			}

			ui.WindowManager().DestroyWindow(dlg.View)
			ui.WindowManager().BeginUpdate()

			closeFunc := dlg.onClose
			ui.WindowManager().EndUpdate()
			if closeFunc != nil {
				closeFunc()
			}
			return true
		}
		return false
	}, nil)

	go func() {
		if ok, err := checkLogin(username, password); ok {
			ui.PutEvent(ui.Event{Type: ui.EventKey, Msg: "login-complete"})
		} else {
			ui.PutEvent(ui.Event{Type: ui.EventKey, Msg: "login-complete", Err: err})
		}
	}()

	go func() {
		for i := 0; i < 422; i += 1 {
			progress.SetValue(int(math.Floor(math.Log(float64(i)*8)*16 - 30)))
			time.Sleep(64 * time.Millisecond)
			ui.PutEvent(ui.Event{Type: ui.EventRedraw})
		}
	}()

	return dlg
}