package views

import (
	"github.com/gdamore/tcell/v2"
	"github.com/rivo/tview"
)

var _ View = &help{}

type help struct {
	view           *tview.Flex
	keyPressedFunc func()
}

type keyMap struct {
	key         string
	description string
}

var keyMaps = []keyMap{
	{
		"Arrows", "Navigation",
	},
	{
		"h, j, k, l", "Navigation",
	},
	{
		"g", "Jump to top",
	},
	{
		"G", "Jump to bottom",
	},
	{
		"p", "Toggle Play/Pause",
	},
	{
		"s", "Stop",
	},
	{
		"n", "Play next song",
	},
	{
		"N", "Play previous song",
	},
	{
		"c", "Stop and clear queue",
	},
	{
		"r", "Start song radio",
	},
	{
		"/", "Search",
	},
	{
		"q", "Quit",
	},
}

func NewHelp() *help {
	h := &help{}
	view := tview.NewTable()
	height := 16
	width := 100
	view.SetBorder(true)
	view.SetTitle("  Keybindings  ")
	view.SetTitleAlign(tview.AlignCenter)

	for i, km := range keyMaps {
		odd := i%2 != 0
		txtColor := tcell.ColorWhite
		if odd {
			txtColor = tcell.ColorYellow
		}
		keyCell := tview.NewTableCell(km.key).
			SetExpansion(1).
			SetAlign(tview.AlignCenter).
			SetTextColor(txtColor)
		descCell := tview.NewTableCell(km.description).
			SetExpansion(1).
			SetAlign(tview.AlignCenter).
			SetTextColor(txtColor)
		view.SetCell(i, 0, keyCell)
		view.SetCell(i, 1, descCell)
	}

	wrapper := tview.NewFlex().
		AddItem(nil, 0, 1, false).
		AddItem(tview.NewFlex().SetDirection(tview.FlexRow).
			AddItem(nil, 0, 1, false).
			AddItem(view, height, 1, true).
			AddItem(nil, 0, 1, false), width, 1, true).
		AddItem(nil, 0, 1, false)

	h.view = wrapper

	return h
}

func (h *help) GetView() tview.Primitive {
	return h.view
}

func (h *help) Update() {

}

func (h *help) SetKeyPressedFunc(f func()) {
	h.keyPressedFunc = f
}