package funkin;

import flixel.FlxObject;
import flixel.FlxSprite;
import flixel.FlxState;
import flixel.addons.transition.FlxTransitionableState;
import flixel.effects.FlxFlicker;
import flixel.graphics.frames.FlxAtlasFrames;
import flixel.group.FlxGroup.FlxTypedGroup;
import flixel.input.touch.FlxTouch;
import flixel.text.FlxText;
import flixel.tweens.FlxEase;
import flixel.tweens.FlxTween;
import flixel.ui.FlxButton;
import flixel.util.FlxColor;
import flixel.util.FlxTimer;
import funkin.NGio;
import funkin.modding.events.ScriptEvent.UpdateScriptEvent;
import funkin.modding.module.ModuleHandler;
import funkin.shaderslmfao.ScreenWipeShader;
import funkin.ui.AtlasMenuList;
import funkin.ui.MenuList.MenuItem;
import funkin.ui.MenuList;
import funkin.ui.OptionsState;
import funkin.ui.PreferencesMenu;
import funkin.ui.Prompt;
import funkin.util.Constants;
import funkin.util.WindowUtil;
import lime.app.Application;
import openfl.filters.ShaderFilter;

using StringTools;

#if discord_rpc
import Discord.DiscordClient;
#end
#if newgrounds
import funkin.ui.NgPrompt;
import io.newgrounds.NG;
#end

class MainMenuState extends MusicBeatState
{
	var menuItems:MenuTypedList<AtlasMenuItem>;

	var magenta:FlxSprite;
	var camFollow:FlxObject;

	override function create()
	{
		#if discord_rpc
		// Updating Discord Rich Presence
		DiscordClient.changePresence("In the Menus", null);
		#end

		transIn = FlxTransitionableState.defaultTransIn;
		transOut = FlxTransitionableState.defaultTransOut;

		if (!FlxG.sound.music.playing)
		{
			FlxG.sound.playMusic(Paths.music('freakyMenu'));
		}

		persistentUpdate = persistentDraw = true;

		var bg:FlxSprite = new FlxSprite(Paths.image('menuBG'));
		bg.scrollFactor.x = 0;
		bg.scrollFactor.y = 0.17;
		bg.setGraphicSize(Std.int(bg.width * 1.2));
		bg.updateHitbox();
		bg.screenCenter();
		bg.antialiasing = true;
		add(bg);

		camFollow = new FlxObject(0, 0, 1, 1);
		add(camFollow);

		magenta = new FlxSprite(Paths.image('menuDesat'));
		magenta.scrollFactor.x = bg.scrollFactor.x;
		magenta.scrollFactor.y = bg.scrollFactor.y;
		magenta.setGraphicSize(Std.int(bg.width));
		magenta.updateHitbox();
		magenta.x = bg.x;
		magenta.y = bg.y;
		magenta.visible = false;
		magenta.antialiasing = true;
		magenta.color = 0xFFfd719b;
		if (PreferencesMenu.preferences.get('flashing-menu'))
			add(magenta);
		// magenta.scrollFactor.set();

		menuItems = new MenuTypedList<AtlasMenuItem>();
		add(menuItems);
		menuItems.onChange.add(onMenuItemChange);
		menuItems.onAcceptPress.add(function(_)
		{
			if (_.name == 'freeplay')
			{
				magenta.visible = true;
			}
			else
			{
				FlxFlicker.flicker(magenta, 1.1, 0.15, false, true);
			}
		});

		menuItems.enabled = true; // can move on intro
		menuItems.createItem('story mode', function() startExitState(new StoryMenuState()));
		menuItems.createItem('freeplay', function()
		{
			persistentDraw = true;
			persistentUpdate = false;
			openSubState(new FreeplayState());
		});
		#if CAN_OPEN_LINKS
		var hasPopupBlocker = #if web true #else false #end;

		if (VideoState.seenVideo)
		{
			createMenuItem('kickstarter', 'mainmenu/kickstarter', selectDonate, hasPopupBlocker);
		}
		else
		{
			createMenuItem('donate', 'mainmenu/donate', selectDonate, hasPopupBlocker);
		}
		#end

		createMenuItem('options', 'mainmenu/options', function()
		{
			startExitState(new OptionsState());
		});

		// Reset position of menu items.
		var spacing = 160;
		var top = (FlxG.height - (spacing * (menuItems.length - 1))) / 2;
		for (i in 0...menuItems.length)
		{
			var menuItem = menuItems.members[i];
			menuItem.x = FlxG.width / 2;
			menuItem.y = top + spacing * i;
		}

		FlxG.cameras.reset(new SwagCamera());
		FlxG.camera.follow(camFollow, null, 0.06);
		// FlxG.camera.setScrollBounds(bg.x, bg.x + bg.width, bg.y, bg.y + bg.height * 1.2);

		super.create();

		// This has to come AFTER!
		this.leftWatermarkText.text = Constants.VERSION;
		// this.rightWatermarkText.text = "blablabla test";

		// NG.core.calls.event.logEvent('swag').send();
	}

	function createMenuItem(name:String, atlas:String, callback:Void->Void, fireInstantly:Bool = false):Void
	{
		var item = new AtlasMenuItem(name, Paths.getSparrowAtlas(atlas), callback);
		item.fireInstantly = fireInstantly;
		item.ID = menuItems.length;

		item.scrollFactor.set();

		// Set the offset of the item so the sprite is centered on the origin.
		item.centered = true;
		item.changeAnim('idle');

		menuItems.addItem(name, item);
	}

	override function closeSubState()
	{
		magenta.visible = false;

		super.closeSubState();
	}

	override function finishTransIn()
	{
		super.finishTransIn();

		// menuItems.enabled = true;

		// #if newgrounds
		// if (NGio.savedSessionFailed)
		// 	showSavedSessionFailed();
		// #end
	}

	function onMenuItemChange(selected:MenuItem)
	{
		camFollow.setPosition(selected.getGraphicMidpoint().x, selected.getGraphicMidpoint().y);
	}

	#if CAN_OPEN_LINKS
	function selectDonate()
	{
		WindowUtil.openURL(Constants.URL_KICKSTARTER);
	}
	#end

	#if newgrounds
	function selectLogin()
	{
		openNgPrompt(NgPrompt.showLogin());
	}

	function selectLogout()
	{
		openNgPrompt(NgPrompt.showLogout());
	}

	function showSavedSessionFailed()
	{
		openNgPrompt(NgPrompt.showSavedSessionFailed());
	}

	/**
	 * Calls openPrompt and redraws the login/logout button
	 * @param prompt 
	 * @param onClose 
	 */
	public function openNgPrompt(prompt:Prompt, ?onClose:Void->Void)
	{
		var onPromptClose = checkLoginStatus;
		if (onClose != null)
		{
			onPromptClose = function()
			{
				checkLoginStatus();
				onClose();
			}
		}

		openPrompt(prompt, onPromptClose);
	}

	function checkLoginStatus()
	{
		var prevLoggedIn = menuItems.has("logout");
		if (prevLoggedIn && !NGio.isLoggedIn)
			menuItems.resetItem("login", "logout", selectLogout);
		else if (!prevLoggedIn && NGio.isLoggedIn)
			menuItems.resetItem("logout", "login", selectLogin);
	}
	#end

	public function openPrompt(prompt:Prompt, onClose:Void->Void)
	{
		menuItems.enabled = false;
		prompt.closeCallback = function()
		{
			menuItems.enabled = true;
			if (onClose != null)
				onClose();
		}

		openSubState(prompt);
	}

	function startExitState(state:FlxState)
	{
		menuItems.enabled = false; // disable for exit
		var duration = 0.4;
		menuItems.forEach(function(item)
		{
			if (menuItems.selectedIndex != item.ID)
			{
				FlxTween.tween(item, {alpha: 0}, duration, {ease: FlxEase.quadOut});
			}
			else
			{
				item.visible = false;
			}
		});

		new FlxTimer().start(duration, function(_) FlxG.switchState(state));
	}

	override function update(elapsed:Float)
	{
		super.update(elapsed);

		if (FlxG.onMobile)
		{
			var touch:FlxTouch = FlxG.touches.getFirst();

			if (touch != null)
			{
				for (item in menuItems)
				{
					if (touch.overlaps(item))
					{
						if (menuItems.selectedIndex == item.ID && touch.justPressed)
							menuItems.accept();
						else
							menuItems.selectItem(item.ID);
					}
				}
			}
		}

		// FlxG.camera.followLerp = CoolUtil.camLerpShit(0.06);

		if (FlxG.sound.music.volume < 0.8)
		{
			FlxG.sound.music.volume += 0.5 * elapsed;
		}

		if (_exiting)
			menuItems.enabled = false;

		if (controls.BACK && menuItems.enabled && !menuItems.busy)
		{
			FlxG.sound.play(Paths.sound('cancelMenu'));
			FlxG.switchState(new TitleState());
		}
	}
}