/**** 
* Classes
****/ 
// BottomBar class to hold matched tiles
var BottomBar = Container.expand(function () {
	var self = Container.call(this);
	self.tiles = [];
	// Add a tile to the bar
	self.addTile = function (tileType) {
		var tile = new Tile();
		tile.setType(tileType);
		tile.x = 100 + self.tiles.length * 200;
		tile.y = 0;
		self.addChild(tile);
		self.tiles.push(tile);
	};
	// Remove all tiles (e.g. after a match)
	self.clearTiles = function () {
		for (var i = 0; i < self.tiles.length; i++) {
			self.tiles[i].destroy();
		}
		self.tiles = [];
	};
	return self;
});
// --- Tile grid setup ---
// Tile class for draggable/selectable tiles
var Tile = Container.expand(function () {
	var self = Container.call(this);
	// Properties
	self.tileType = null; // e.g. 'blue', 'green', etc.
	self.selected = false;
	// Attach asset based on type
	self.setType = function (type) {
		self.tileType = type;
		if (self.tileAsset) {
			self.removeChild(self.tileAsset);
		}
		var assetId = 'tile_' + type;
		self.tileAsset = self.attachAsset(assetId, {
			anchorX: 0.5,
			anchorY: 0.5
		});
	};
	// Visual feedback for selection
	self.setSelected = function (selected) {
		self.selected = selected;
		if (self.tileAsset) {
			self.tileAsset.alpha = selected ? 0.7 : 1.0;
		}
	};
	// Track last position for drag logic
	self.lastX = 0;
	self.lastY = 0;
	return self;
});

/**** 
* Initialize Game
****/ 
var game = new LK.Game({
	backgroundColor: 0x000000
});

/**** 
* Game Code
****/ 
// --- Tile grid setup ---
// --- Level and Point Display ---
var levelText = new Text2('Level: 1', {
	size: 90,
	fill: 0xFFFFFF
});
levelText.anchor.set(0, 0); // Top left, but avoid platform menu
levelText.x = 120;
levelText.y = 20;
LK.gui.top.addChild(levelText);
var pointText = new Text2('Points: 0', {
	size: 90,
	fill: 0xFFFFFF
});
pointText.anchor.set(1, 0); // Top right
pointText.x = LK.gui.top.width - 40;
pointText.y = 20;
LK.gui.top.addChild(pointText);
// --- Multi-layer/level support ---
var gridRows = 3;
var gridCols = 3;
var tileTypes = ['blue', 'green', 'orange', 'purple', 'red', 'yellow'];
var tileSize = 180;
var gridOffsetX = (2048 - gridCols * tileSize) / 2 + tileSize / 2;
var gridOffsetY = 400;
var selectedTile = null;
var draggingTile = null;
// Layer/level variables
var currentLayer = 1;
var maxLayers = 1;
var tileLayers = []; // Array of tileGrid arrays, one per layer
function createLayer(layerNum) {
	var tileGrid = [];
	// --- Ensure each color's tile count is a multiple of 3 ---
	var totalTiles = gridRows * gridCols;
	var colorCount = tileTypes.length;
	var baseCount = Math.floor(totalTiles / colorCount / 3) * 3; // base multiple of 3 per color
	var colorCounts = [];
	var remaining = totalTiles;
	for (var i = 0; i < colorCount; i++) {
		colorCounts[i] = baseCount;
		remaining -= baseCount;
	}
	// Distribute remaining tiles, always in multiples of 3
	for (var i = 0; remaining > 0 && i < colorCount; i++) {
		if (remaining >= 3) {
			colorCounts[i] += 3;
			remaining -= 3;
		}
	}
	// Build a pool of tile types
	var tilePool = [];
	for (var i = 0; i < colorCount; i++) {
		for (var j = 0; j < colorCounts[i]; j++) {
			tilePool.push(tileTypes[i]);
		}
	}
	// Shuffle tilePool
	for (var i = tilePool.length - 1; i > 0; i--) {
		var j = Math.floor(Math.random() * (i + 1));
		var temp = tilePool[i];
		tilePool[i] = tilePool[j];
		tilePool[j] = temp;
	}
	for (var row = 0; row < gridRows; row++) {
		tileGrid[row] = [];
		var _loop = function _loop() {
				tile = new Tile();
				// Pop from shuffled pool
				type = tilePool.pop();
				tile.setType(type);
				tile.x = gridOffsetX + col * tileSize;
				tile.y = gridOffsetY + row * tileSize;
				tile.row = row;
				tile.col = col;
				tile.layer = layerNum;
				tile.visible = layerNum === currentLayer;
				tileGrid[row][col] = tile;
				game.addChild(tile);
				tile.setVisible = function (vis) {
					this.tileAsset.alpha = vis ? 1.0 : 0.0;
					this.visible = vis;
				};
				tile.setVisible(layerNum === currentLayer);
			},
			tile,
			type;
		for (var col = 0; col < gridCols; col++) {
			_loop();
		}
	}
	return tileGrid;
}
// Initialize first layer
tileLayers = [];
tileLayers.push(createLayer(1));
maxLayers = 1;
currentLayer = 1;
// Helper to get current layer's grid
function getCurrentGrid() {
	return tileLayers[currentLayer - 1];
}
// --- Bottom bar setup ---
var bottomBar = new BottomBar();
bottomBar.x = (2048 - tileSize * 5) / 2;
bottomBar.y = 2732 - 250;
game.addChild(bottomBar);
// --- Click-to-add-bar logic ---
game.down = function (x, y, obj) {
	// Find tile under pointer
	var tileGrid = getCurrentGrid();
	for (var row = 0; row < gridRows; row++) {
		for (var col = 0; col < gridCols; col++) {
			var tile = tileGrid[row][col];
			if (tile && Math.abs(tile.x - x) < tileSize / 2 && Math.abs(tile.y - y) < tileSize / 2) {
				// Add to bottom bar if not already full
				if (bottomBar.tiles.length < 5) {
					bottomBar.addTile(tile.tileType);
					LK.getSound('pop').play();
					// Remove from grid
					game.removeChild(tile);
					tileGrid[row][col] = null;
				}
				return;
			}
		}
	}
};
game.move = function (x, y, obj) {
	// No drag logic needed
};
game.up = function (x, y, obj) {
	// No drag logic needed
};
// --- Matching logic in bottom bar ---
function isLayerCleared(layerNum) {
	var tileGrid = tileLayers[layerNum - 1];
	for (var row = 0; row < gridRows; row++) {
		for (var col = 0; col < gridCols; col++) {
			if (tileGrid[row][col]) return false;
		}
	}
	return true;
}
game.update = function () {
	// Check for match in bottom bar (3+ same type in a row)
	if (bottomBar.tiles.length >= 3) {
		var lastType = bottomBar.tiles[0].tileType;
		var matchCount = 1;
		for (var i = 1; i < bottomBar.tiles.length; i++) {
			if (bottomBar.tiles[i].tileType === lastType) {
				matchCount++;
			} else {
				lastType = bottomBar.tiles[i].tileType;
				matchCount = 1;
			}
			if (matchCount >= 3) {
				// Remove matched tiles
				for (var j = i - 2; j <= i; j++) {
					bottomBar.tiles[j].destroy();
				}
				// Remove from array
				bottomBar.tiles.splice(i - 2, 3);
				// Add score
				LK.setScore(LK.getScore() + 10);
				pointText.setText('Points: ' + LK.getScore());
				break;
			}
		}
	}
	// --- Layer progression logic ---
	if (isLayerCleared(currentLayer)) {
		// If more layers exist, go to next
		if (currentLayer < maxLayers) {
			// Hide previous layer's tiles
			var prevGrid = tileLayers[currentLayer - 1];
			for (var row = 0; row < gridRows; row++) {
				for (var col = 0; col < gridCols; col++) {
					if (prevGrid[row] && prevGrid[row][col]) prevGrid[row][col].setVisible(false);
				}
			}
			currentLayer++;
			levelText.setText('Level: ' + currentLayer);
			// Show new layer's tiles
			var newGrid = tileLayers[currentLayer - 1];
			for (var row = 0; row < gridRows; row++) {
				for (var col = 0; col < gridCols; col++) {
					if (newGrid[row][col]) newGrid[row][col].setVisible(true);
				}
			}
		} else {
			// Add a new layer (increase difficulty)
			// Make the game harder by increasing grid size every level, up to a reasonable max
			if (gridRows < 7) gridRows++;
			if (gridCols < 7) gridCols++;
			maxLayers++;
			// Recalculate grid offsets for new grid size
			tileSize = 180;
			gridOffsetX = (2048 - gridCols * tileSize) / 2 + tileSize / 2;
			gridOffsetY = 400;
			var newLayerGrid = createLayer(maxLayers);
			tileLayers.push(newLayerGrid);
			// Hide previous layer's tiles
			var prevGrid = tileLayers[currentLayer - 1];
			for (var row = 0; row < gridRows; row++) {
				for (var col = 0; col < gridCols; col++) {
					if (prevGrid[row] && prevGrid[row][col]) prevGrid[row][col].setVisible(false);
				}
			}
			currentLayer = maxLayers;
			levelText.setText('Level: ' + currentLayer);
			// Show new layer's tiles
			var newGrid = tileLayers[currentLayer - 1];
			for (var row = 0; row < gridRows; row++) {
				for (var col = 0; col < gridCols; col++) {
					if (newGrid[row][col]) newGrid[row][col].setVisible(true);
				}
			}
		}
	}
};