package main

import (
	"strings"

	"github.com/nsf/termbox-go"
	"gogs.bullercodeworks.com/brian/termbox-util"
)

type command struct {
	key         string
	description string
}

type titleScreen struct {
	titleArt    *termboxUtil.ASCIIArt
	directions  *termboxUtil.ASCIIArt
	menu        *termboxUtil.Menu
	initialized bool
}

func (screen *titleScreen) handleKeyPress(event termbox.Event) int {
	if screen.menu.HandleEvent(event) {
		if screen.menu.IsDone() {
			selOpt := screen.menu.GetSelectedOption()
			if strings.Trim(selOpt.GetText(), " ") == "Exit" {
				return exitScreenIndex
			} else if strings.Trim(selOpt.GetText(), " ") == "New Game" {
				screen.initialized = false
				return mainScreenIndex
			}
		}
	}
	return titleScreenIndex
}

func (screen *titleScreen) performLayout(style style) {
	if !screen.initialized {
		var tmplt []string
		if ScreenWidth >= 87 {
			tmplt = append(tmplt, "  ________              .__                   __________        __    __  .__          ")
			tmplt = append(tmplt, " /  _____/  ____ ______ |  |__   ___________  \\______   _____ _/  |__/  |_|  |   ____  ")
			tmplt = append(tmplt, "/   \\  ___ /  _ \\\\____ \\|  |  \\_/ __ \\_  __ \\  |    |  _\\__  \\\\   __\\   __|  | _/ __ \\ ")
			tmplt = append(tmplt, "\\    \\_\\  (  <_> |  |_> |   Y  \\  ___/|  | \\/  |    |   \\/ __ \\|  |  |  | |  |_\\  ___/ ")
			tmplt = append(tmplt, " \\______  /\\____/|   __/|___|  /\\___  |__|     |______  (____  |__|  |__| |____/\\___  >")
			tmplt = append(tmplt, "        \\/       |__|        \\/     \\/                \\/     \\/                     \\/ ")
		} else {
			tmplt = append(tmplt, "                            ")
			tmplt = append(tmplt, "                            ")
			tmplt = append(tmplt, "       Gopher Battle        ")
			tmplt = append(tmplt, "                            ")
			tmplt = append(tmplt, "                            ")
			tmplt = append(tmplt, "                            ")
		}
		defaultFg := style.defaultFg
		defaultBg := style.defaultBg
		screen.titleArt = termboxUtil.CreateASCIIArt(tmplt, 0, 0, defaultFg, defaultBg)
		w, h := termbox.Size()
		screen.titleArt.Align(termboxUtil.AlignCenter, w)

		menuX := w/2 - 10
		menuY := h/2 - 5

		screen.menu = termboxUtil.CreateMenu("",
			[]string{
				"      New Game      ",
				"        Exit        "},
			menuX, menuY, 20, 10, defaultFg, defaultBg,
		)
		// TODO: Check if we have a suspended game
		screen.menu.EnableVimMode()

		var directions []string
		directions = append(directions, "       Directions:          ")
		directions = append(directions, "  Up/Down adjust Speed      ")
		directions = append(directions, "  Left/Right adjust Angle   ")
		directions = append(directions, "       Space to Fire        ")
		directions = append(directions, "     W,A,S,D also work      ")
		screen.directions = termboxUtil.CreateASCIIArt(directions, 0, menuX+10, defaultFg, defaultBg)
		screen.directions.Align(termboxUtil.AlignCenter, w)

		screen.initialized = true
	}
}

func (screen *titleScreen) update() {}

func (screen *titleScreen) drawScreen(style style) {
	screen.titleArt.Draw()
	screen.menu.Draw()
	screen.directions.Draw()
}