/**** 
* Plugins
****/ 
var tween = LK.import("@upit/tween.v1");
var storage = LK.import("@upit/storage.v1");

/**** 
* Classes
****/ 
// Bird class
var Bird = Container.expand(function () {
	var self = Container.call(this);
	// Attach bird asset (ellipse, yellow)
	var birdAsset = self.attachAsset('bird', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	// Set up bird asset properties
	birdAsset.width = 120;
	birdAsset.height = 120;
	birdAsset.color = 0xffe066;
	birdAsset.shape = 'ellipse';
	// Bird skin logic
	self.currentSkin = typeof storage.selectedSkin === "string" ? storage.selectedSkin : "default";
	self.setSkin = function (skinId) {
		// Remove old asset
		if (self.children.length > 0) {
			self.removeChild(self.children[0]);
		}
		// Pick asset for skin
		var assetId = "bird";
		if (skinId === "bird2") {
			assetId = "bird2";
		} else if (skinId === "bird3") {
			assetId = "bird3";
		} else if (skinId === "sapsik") {
			assetId = "sapsik";
		}
		var asset = self.attachAsset(assetId, {
			anchorX: 0.5,
			anchorY: 0.5
		});
		asset.width = 120;
		asset.height = 120;
		self.currentSkin = skinId;
	};
	self.setSkin(self.currentSkin);
	// Bird physics
	self.velocityY = 0;
	self.gravity = 1.1; // Gravity per frame (slightly faster than before)
	self.flapStrength = -26; // Negative for upward movement (higher jump)
	// Bird update method (called every tick)
	self.update = function () {
		if (!gameStarted) {
			// Don't update position or velocity if game hasn't started
			return;
		}
		self.velocityY += self.gravity;
		self.y += self.velocityY;
		// Clamp bird to not go above the screen
		if (self.y < self.height / 2) {
			self.y = self.height / 2;
			self.velocityY = 0;
		}
	};
	// Flap method
	self.flap = function () {
		self.velocityY = self.flapStrength;
	};
	return self;
});
// Coin class
var Coin = Container.expand(function () {
	var self = Container.call(this);
	// Attach coin asset (ellipse, gold)
	var coinAsset = self.attachAsset('coin', {
		anchorX: 0.5,
		anchorY: 0.5,
		width: 100,
		height: 100,
		color: 0xffd700,
		shape: 'ellipse',
		x: 0,
		y: 0
	});
	self.collected = false;
	// Coin update: move left at pipe speed
	self.update = function (speed) {
		self.x -= speed;
	};
	return self;
});
// PipePair class (top and bottom pipes as a pair)
var PipePair = Container.expand(function () {
	var self = Container.call(this);
	// Pipe properties
	self.pipeWidth = 220;
	self.gapHeight = 520; // Vertical gap between pipes
	self.speed = 16; // Speed at which pipes move left (increased for faster gameplay)
	// Randomize gap position
	var minGapY = 400;
	var maxGapY = 2732 - 400 - self.gapHeight;
	self.gapY = minGapY + Math.floor(Math.random() * (maxGapY - minGapY + 1));
	// Top pipe
	self.topPipe = self.attachAsset('pipeTop', {
		anchorX: 0.5,
		anchorY: 1.0,
		width: self.pipeWidth,
		height: self.gapY,
		color: 0x4ec04e,
		shape: 'box',
		x: 0,
		y: self.gapY
	});
	// Bottom pipe
	self.bottomPipe = self.attachAsset('pipeBottom', {
		anchorX: 0.5,
		anchorY: 0.0,
		width: self.pipeWidth,
		height: 2732 - (self.gapY + self.gapHeight),
		color: 0x4ec04e,
		shape: 'box',
		x: 0,
		y: self.gapY + self.gapHeight
	});
	// Scoring flag (to ensure only one score per pipe pair)
	self.scored = false;
	// Add coin between pipes
	self.coin = new Coin();
	// Place coin in the center of the gap
	self.coin.x = 0;
	self.coin.y = self.gapY + self.gapHeight / 2;
	self.addChild(self.coin);
	// Update method
	self.update = function () {
		self.x -= self.speed;
		// Coin does not move independently; it stays fixed between the pipes
	};
	return self;
});

/**** 
* Initialize Game
****/ 
var game = new LK.Game({
	backgroundColor: 0x000000 // Not visible, pixel sky covers all
});

/**** 
* Game Code
****/ 
// Game constants
// Tween plugin for animations (optional, not used in MVP but included for future use)
var GROUND_HEIGHT = 220;
var PIPE_INTERVAL = 70; // Frames between pipes (faster spawn rate)
var BIRD_START_X = 600;
var BIRD_START_Y = 1200;
// Game state variables
var bird;
var pipes = [];
var score = 0;
var scoreTxt;
var ground;
var gameStarted = false;
var gameOver = false;
var ticksSinceLastPipe = 0;
// Add pixel sky background (full screen, behind everything)
var skyBg = LK.getAsset('pixelSky', {
	anchorX: 0,
	anchorY: 0,
	width: 2048,
	height: 2732,
	x: 0,
	y: 0
});
game.addChild(skyBg);
// Add ground (simple green box at bottom)
ground = LK.getAsset('ground', {
	anchorX: 0,
	anchorY: 0,
	width: 2048,
	height: GROUND_HEIGHT,
	color: 0x3b7a2a,
	shape: 'box',
	x: 0,
	y: 2732 - GROUND_HEIGHT
});
game.addChild(ground);
// Add bird
bird = new Bird();
bird.x = BIRD_START_X;
bird.y = BIRD_START_Y;
game.addChild(bird);
// Add score text to GUI
scoreTxt = new Text2('0', {
	size: 180,
	fill: 0xFFFFFF
});
scoreTxt.anchor.set(0.5, 0);
LK.gui.top.addChild(scoreTxt);
// Add start button to center of screen
var startBtn = new Text2('START', {
	size: 220,
	fill: 0xffffff,
	font: "Impact, Arial Black, Tahoma"
});
startBtn.anchor.set(0.5, 0.5);
startBtn.x = 2048 / 2;
startBtn.y = 2732 / 2 + 300; // Move the button further down to avoid accidental game over
game.addChild(startBtn);
// Start button tap handler
startBtn.down = function (x, y, obj) {
	if (!gameStarted && !gameOver) {
		startGame();
		startBtn.visible = false;
	}
};
// Show/hide start button based on game state
function showStartButton() {
	if (typeof startBtn !== "undefined") startBtn.visible = true;
}
function hideStartButton() {
	if (typeof startBtn !== "undefined") startBtn.visible = false;
}
// Add money icon and money counter to the right side of the screen
var moneyIcon = LK.getAsset('coin', {
	anchorX: 1,
	anchorY: 0,
	width: 100,
	height: 100,
	x: 0,
	y: 0
});
var moneyAmount = 0;
var moneyTxt = new Text2('0', {
	size: 120,
	fill: 0xffd700
});
moneyTxt.anchor.set(1, 0);
// Position icon and text at the top right, with some margin from the edge
moneyIcon.x = -40;
moneyIcon.y = 40;
moneyTxt.x = -160;
moneyTxt.y = 60;
LK.gui.topRight.addChild(moneyIcon);
LK.gui.topRight.addChild(moneyTxt);
// Add shop button to top right (below money)
var shopBtn = new Text2('SHOP', {
	size: 100,
	fill: 0xffffff,
	font: "Impact, Arial Black, Tahoma"
});
shopBtn.anchor.set(1, 0);
shopBtn.x = -40;
shopBtn.y = 160;
LK.gui.topRight.addChild(shopBtn);
// High score tracking
var highScore = typeof storage.highScore === "number" ? storage.highScore : 0;
var highScoreTxt = new Text2('Best: ' + highScore, {
	size: 100,
	fill: 0xffffff
});
highScoreTxt.anchor.set(1, 1);
// Position at bottom right with margin
highScoreTxt.x = -40;
highScoreTxt.y = -40;
LK.gui.bottomRight.addChild(highScoreTxt);
// --- Shop Menu UI and Logic ---
var shopMenu = new Container();
shopMenu.visible = false;
game.addChild(shopMenu);
// Shop background
var shopBg = LK.getAsset('ground', {
	anchorX: 0.5,
	anchorY: 0.5,
	width: 900,
	height: 1200,
	color: 0x222222,
	shape: 'box',
	x: 2048 / 2,
	y: 2732 / 2
});
shopMenu.addChild(shopBg);
// Shop title
var shopTitle = new Text2('SKIN SHOP', {
	size: 140,
	fill: 0xffffff,
	font: "Impact, Arial Black, Tahoma"
});
shopTitle.anchor.set(0.5, 0);
shopTitle.x = 2048 / 2;
shopTitle.y = 2732 / 2 - 500;
shopMenu.addChild(shopTitle);
// Skins data (id, label, price, assetId)
var skins = [{
	id: "default",
	label: "Classic",
	price: 0,
	asset: "bird"
}, {
	id: "bird2",
	label: "Bird 2",
	price: 10,
	asset: "bird2"
}, {
	id: "bird3",
	label: "Bird 3",
	price: 15,
	asset: "bird3"
}, {
	id: "sapsik",
	label: "Sapsik",
	price: 50,
	asset: "sapsik"
}];
// Load owned skins from storage or default to only "default"
var ownedSkins = storage.ownedSkins && Array.isArray(storage.ownedSkins) ? storage.ownedSkins : ["default"];
var selectedSkin = typeof storage.selectedSkin === "string" ? storage.selectedSkin : "default";
// Helper to update skin buttons
function updateSkinButtons() {
	for (var i = 0; i < skinButtons.length; i++) {
		var btn = skinButtons[i];
		var skin = skins[i];
		if (ownedSkins.indexOf(skin.id) !== -1) {
			btn.setText(skin.label + (selectedSkin === skin.id ? " (Selected)" : ""));
		} else {
			btn.setText(skin.label + " (" + skin.price + "💰)");
		}
	}
}
// Create skin buttons
var skinButtons = [];
for (var i = 0; i < skins.length; i++) {
	(function (idx) {
		var skin = skins[idx];
		var btn = new Text2(skin.label, {
			size: 100,
			fill: 0xffffff,
			font: "Impact, Arial Black, Tahoma"
		});
		btn.anchor.set(0.5, 0);
		btn.x = 2048 / 2;
		btn.y = 2732 / 2 - 250 + idx * 220;
		btn.down = function (x, y, obj) {
			// If already owned, select it
			if (ownedSkins.indexOf(skin.id) !== -1) {
				selectedSkin = skin.id;
				// Persist selectedSkin to storage
				storage.selectedSkin = selectedSkin;
				updateSkinButtons();
				// Update bird skin if in game
				if (typeof bird !== "undefined" && bird.setSkin) bird.setSkin(selectedSkin);
			} else if (moneyAmount >= skin.price) {
				// Buy skin
				moneyAmount -= skin.price;
				storage.moneyAmount = moneyAmount;
				moneyTxt.setText(moneyAmount + '');
				ownedSkins.push(skin.id);
				// Persist ownedSkins to storage
				storage.ownedSkins = ownedSkins;
				// Persist selectedSkin to storage
				selectedSkin = skin.id;
				storage.selectedSkin = selectedSkin;
				updateSkinButtons();
				if (typeof bird !== "undefined" && bird.setSkin) bird.setSkin(selectedSkin);
			}
		};
		shopMenu.addChild(btn);
		skinButtons.push(btn);
	})(i);
}
// Close button (cross in top right)
var closeShopCross = new Text2('✕', {
	size: 120,
	fill: 0xffffff,
	font: "Impact, Arial Black, Tahoma"
});
closeShopCross.anchor.set(1, 0);
closeShopCross.x = 2048 / 2 + 450 - 30; // right edge of shopBg minus margin
closeShopCross.y = 2732 / 2 - 600 + 30; // top edge of shopBg plus margin
closeShopCross.down = function (x, y, obj) {
	shopMenu.visible = false;
};
shopMenu.addChild(closeShopCross);
// (Old close button removed)
// Shop button handler
shopBtn.down = function (x, y, obj) {
	updateSkinButtons();
	shopMenu.visible = true;
};
// Helper: Reset game state
function resetGame() {
	// Remove all pipes
	for (var i = 0; i < pipes.length; i++) {
		pipes[i].destroy();
	}
	pipes = [];
	score = 0;
	scoreTxt.setText('0');
	moneyAmount = typeof storage.moneyAmount === "number" ? storage.moneyAmount : 0;
	if (typeof moneyTxt !== "undefined") moneyTxt.setText(moneyAmount + '');
	// Update high score from storage in case it changed externally
	if (typeof storage.highScore === "number") {
		highScore = storage.highScore;
		if (typeof highScoreTxt !== "undefined") {
			highScoreTxt.setText('Best: ' + highScore);
		}
	}
	// Restore games won from storage and update UI
	gamesWon = typeof storage.gamesWon === "number" ? storage.gamesWon : 0;
	if (typeof gamesWonTxt !== "undefined") {
		gamesWonTxt.setText('Wins: ' + gamesWon);
	}
	bird.x = BIRD_START_X;
	bird.y = BIRD_START_Y;
	bird.velocityY = 0;
	// Restore ownedSkins and selectedSkin from storage
	ownedSkins = storage.ownedSkins && Array.isArray(storage.ownedSkins) ? storage.ownedSkins : ["default"];
	selectedSkin = typeof storage.selectedSkin === "string" ? storage.selectedSkin : "default";
	// Restore bird skin
	if (typeof bird.setSkin === "function") {
		var skinToSet = selectedSkin;
		bird.setSkin(skinToSet);
	}
	gameStarted = false;
	gameOver = false;
	ticksSinceLastPipe = 0;
	showStartButton();
}
// Helper: Start game (first flap)
function startGame() {
	if (!gameStarted && !gameOver) {
		gameStarted = true;
		hideStartButton();
	}
}
// Helper: End game
function endGame() {
	gameOver = true;
	// Update high score if needed
	if (score > highScore) {
		highScore = score;
		storage.highScore = highScore;
		if (typeof highScoreTxt !== "undefined") {
			highScoreTxt.setText('Best: ' + highScore);
		}
	}
	LK.effects.flashScreen(0xff0000, 600);
	hideStartButton();
	LK.showGameOver();
}
// Game tap/flap handler
game.down = function (x, y, obj) {
	if (gameOver) return;
	if (!gameStarted) {
		startGame();
	}
	bird.flap();
};
// --- Games Won Counter UI ---
var gamesWon = typeof storage.gamesWon === "number" ? storage.gamesWon : 0;
var gamesWonTxt = new Text2('Wins: ' + gamesWon, {
	size: 100,
	fill: 0x00ffcc
});
gamesWonTxt.anchor.set(0, 1);
gamesWonTxt.x = 40;
gamesWonTxt.y = -40;
LK.gui.bottomLeft.addChild(gamesWonTxt);
// Main game update loop
game.update = function () {
	if (gameOver) return;
	// Only update bird and pipes if game started
	if (gameStarted) {
		bird.update();
		// Add new pipes at interval
		ticksSinceLastPipe++;
		if (ticksSinceLastPipe >= PIPE_INTERVAL) {
			ticksSinceLastPipe = 0;
			var pipePair = new PipePair();
			pipePair.x = 2048 + pipePair.pipeWidth / 2;
			pipePair.y = 0;
			pipes.push(pipePair);
			game.addChild(pipePair);
		}
		// Update pipes and check for collisions
		for (var i = pipes.length - 1; i >= 0; i--) {
			var pipe = pipes[i];
			pipe.update();
			// Remove pipes that have gone off screen
			if (pipe.x < -pipe.pipeWidth / 2) {
				pipe.destroy();
				pipes.splice(i, 1);
				continue;
			}
			// Collision detection (bird with pipes)
			// Use .intersects for both top and bottom pipes
			if (bird.intersects(pipe.topPipe) || bird.intersects(pipe.bottomPipe)) {
				endGame();
				return;
			}
			// Coin collection
			if (pipe.coin && !pipe.coin.collected && bird.intersects(pipe.coin)) {
				pipe.coin.collected = true;
				pipe.coin.visible = false;
				score += 5; // Award 5 points for coin
				scoreTxt.setText(score + '');
				moneyAmount += 1;
				moneyTxt.setText(moneyAmount + '');
				// Persist moneyAmount to storage
				storage.moneyAmount = moneyAmount;
			}
			// Scoring: if bird passes the center of the pipe and hasn't scored yet
			if (!pipe.scored && pipe.x + pipe.pipeWidth / 2 < bird.x - bird.width / 2) {
				pipe.scored = true;
				score += 1;
				scoreTxt.setText(score + '');
			}
		}
		// --- Win Condition: 500 points ---
		if (score >= 500 && !gameOver) {
			// Only trigger win once per game
			gameOver = true;
			// Increment games won and persist
			gamesWon = typeof storage.gamesWon === "number" ? storage.gamesWon : 0;
			gamesWon += 1;
			storage.gamesWon = gamesWon;
			if (typeof gamesWonTxt !== "undefined") {
				gamesWonTxt.setText('Wins: ' + gamesWon);
			}
			LK.effects.flashScreen(0x00ffcc, 1000);
			hideStartButton();
			LK.showYouWin();
			return;
		}
		// Collision with ground
		if (bird.y + bird.height / 2 >= 2732 - GROUND_HEIGHT) {
			bird.y = 2732 - GROUND_HEIGHT - bird.height / 2;
			endGame();
			return;
		}
	}
};
// Reset game on game over (handled by LK automatically, but for clarity)
game.onGameOver = function () {
	resetGame();
};
// Initial reset
resetGame();