package dialogs

import (
	"strings"

	"git.brettb.xyz/goinv/client/internal/ui/style"
	"git.brettb.xyz/goinv/client/internal/ui/utils"
	"github.com/gdamore/tcell/v2"
	"github.com/rivo/tview"
	"go.uber.org/zap"
)

type MessageDialog struct {
	*tview.Box
	logger        *zap.Logger
	layout        *tview.Flex
	infoType      *tview.InputField
	textView      *tview.TextView
	form          *tview.Form
	display       bool
	message       string
	cancelHandler func()
}

type messageInfo int

const (
	MessageGeneric messageInfo = iota
)

func NewMessageDialog(logger *zap.Logger, text string) *MessageDialog {
	dialog := MessageDialog{
		Box:      tview.NewBox(),
		logger:   logger,
		infoType: tview.NewInputField(),
		display:  false,
		message:  text,
	}

	dialog.infoType.SetBackgroundColor(style.ButtonBgColor)
	dialog.infoType.SetFieldStyle(tcell.StyleDefault.
		Background(style.ButtonBgColor).
		Foreground(style.ButtonFgColor))
	dialog.infoType.SetLabelStyle(tcell.StyleDefault.
		Background(style.ButtonBgColor).
		Foreground(style.ButtonFgColor))

	dialog.textView = tview.NewTextView().
		SetDynamicColors(true).
		SetWrap(true).
		SetTextAlign(tview.AlignLeft)

	dialog.textView.SetBackgroundColor(style.DialogSubBoxBgColor)
	dialog.textView.SetBorderColor(style.DialogSubBoxBorderColor)
	dialog.textView.SetBorder(true)
	dialog.textView.SetTextStyle(tcell.StyleDefault.
		Background(style.DialogSubBoxBgColor).
		Foreground(style.DialogSubBoxFgColor))

	tlayout := tview.NewFlex().SetDirection(tview.FlexColumn)
	tlayout.AddItem(utils.EmptyBoxSpace(style.DialogBgColor), 1, 0, false)
	tlayout.AddItem(tview.NewFlex().SetDirection(tview.FlexRow).
		AddItem(dialog.infoType, 1, 0, false).
		AddItem(utils.EmptyBoxSpace(style.DialogBgColor), 1, 0, false).
		AddItem(dialog.textView, 0, 1, true),
		0, 1, true)
	tlayout.AddItem(utils.EmptyBoxSpace(style.DialogBgColor), 1, 0, false)

	dialog.form = tview.NewForm().
		AddButton("Cancel", nil).
		SetButtonsAlign(tview.AlignRight)

	dialog.form.SetFocus(0)

	dialog.form.SetBackgroundColor(style.DialogBgColor)
	dialog.form.SetButtonBackgroundColor(style.ButtonBgColor)
	dialog.form.SetButtonTextColor(style.ButtonFgColor)
	dialog.form.SetButtonActivatedStyle(tcell.StyleDefault.
		Background(style.ButtonSelectedBgColor).
		Foreground(style.ButtonSelectedFgColor))

	dialog.layout = tview.NewFlex().SetDirection(tview.FlexRow)
	dialog.layout.AddItem(utils.EmptyBoxSpace(style.DialogBgColor), 1, 0, false)
	dialog.layout.AddItem(tlayout, 0, 1, true)
	dialog.layout.AddItem(dialog.form, DialogFormHeight, 0, true)
	dialog.layout.SetBorder(true)
	dialog.layout.SetBorderColor(style.DialogBorderColor)
	dialog.layout.SetBackgroundColor(style.DialogBgColor)
	dialog.layout.SetTitleColor(style.DialogFgColor)

	return &dialog
}

func (d *MessageDialog) Display() {
	d.display = true
}

func (d *MessageDialog) IsDisplay() bool {
	return d.display
}

func (d *MessageDialog) Hide() {
	d.message = ""
	d.textView.SetText("")
	d.display = false
}

func (d *MessageDialog) SetTitle(title string) {
	d.layout.SetTitle(strings.ToUpper(title))
}

func (d *MessageDialog) SetText(headerType messageInfo, headerMessage string, message string) {
	msgTypeLabel := ""

	switch headerType {
	case MessageGeneric:
		msgTypeLabel = "SYSTEM:"
	}

	if msgTypeLabel != "" {
		d.infoType.SetLabel("[::b]" + msgTypeLabel)
		d.infoType.SetLabelWidth(len(msgTypeLabel) + 1)
		d.infoType.SetText(headerMessage)
	}

	d.message = message
	d.textView.Clear()

	if d.message == "" {
		d.textView.SetBorder(false)
		d.textView.SetText("")
	} else {
		//d.textView.SetTextColor(style.DialogFgColor)
		//d.textView.SetBackgroundColor(style.DialogSubBoxBorderColor)
		//d.textView.SetBorder(true)
		//d.textView.SetBorderColor(style.DialogBorderColor)
		//d.textView.SetTextStyle(tcell.StyleDefault.
		//	Background(style.DialogSubBoxBorderColor).
		//	Foreground(style.ButtonFgColor))
		d.textView.SetBorder(true)
		d.textView.SetText(message)
	}

	d.textView.ScrollToBeginning()
}

func (d *MessageDialog) TextScrollToEnd() {
	d.textView.ScrollToEnd()
}

func (d *MessageDialog) Focus(delegate func(tview.Primitive)) {
	delegate(d.form)
}

func (d *MessageDialog) HasFocus() bool {
	return utils.CheckFocus(d.form, d.textView, d.Box)
}

func (d *MessageDialog) SetRect(x, y, width, height int) {
	messageHeight := 0
	if d.message != "" {
		messageHeight = len(strings.Split(d.message, "\n"))
	}

	messageWidth := getMessageWidth(d.message)

	headerWidth := len(d.infoType.GetText()) + len(d.infoType.GetLabel()) + 4
	if messageWidth < headerWidth {
		messageWidth = headerWidth
	}

	dWidth := width - (2 * DialogPadding)
	if messageWidth+4 < dWidth {
		dWidth = messageWidth + 4
	}

	if DialogMinWidth < width && dWidth < DialogMinWidth {
		dWidth = DialogMinWidth
	}

	emptySpace := (width - dWidth) / 2
	dX := x + emptySpace

	dHeight := messageHeight + DialogFormHeight + DialogPadding + 4
	if dHeight > height {
		dHeight = height - DialogPadding - 1
	}

	textviewHeight := dHeight - DialogFormHeight - 2
	hs := (height - dHeight) / 2
	dY := y + hs

	d.Box.SetRect(dX, dY, dWidth, dHeight)

	d.layout.ResizeItem(d.textView, textviewHeight, 0)
}

func (d *MessageDialog) Draw(screen tcell.Screen) {
	if !d.display {
		return
	}

	d.Box.DrawForSubclass(screen, d)
	x, y, width, height := d.Box.GetInnerRect()
	d.layout.SetRect(x, y, width, height)
	d.layout.Draw(screen)
}

func (d *MessageDialog) InputHandler() func(*tcell.EventKey, func(tview.Primitive)) {
	return d.WrapInputHandler(func(event *tcell.EventKey, setFocus func(tview.Primitive)) {
		d.logger.Sugar().Debugf("message dialog event %v received", event)
		if event.Key() == utils.CloseDialogKey.EventKey() || event.Key() == tcell.KeyEnter {
			d.cancelHandler()

			return
		}

		if event.Key() == utils.SwitchFocusKey.EventKey() {
			if formHandler := d.form.InputHandler(); formHandler != nil {
				formHandler(event, setFocus)

				return
			}
		}

		if textHandler := d.textView.InputHandler(); textHandler != nil {
			textHandler(event, setFocus)

			return
		}
	})
}

func (d *MessageDialog) SetCancelFunc(handler func()) *MessageDialog {
	d.cancelHandler = handler

	return d
}