window.addEventListener("load", async function (){
    const GAME_CONFIG ={
        mainGrid:{width:10,height:20},
        previewGrid:{width:6,height:6},
        cellSize:30,
        colors:["#CCCCCC", "red", "blue", "green", "yellow", "orange", "purple", "cyan", "#FAEBD7"],
    }
    const canvas =  document.querySelector("#game-board");
    const nextCanvas = document.querySelector("#next-piece-board");
    const uiLvl = document.querySelector("#level");
    const uiLines = document.querySelector("#lines");
    const uiScore = document.querySelector("#score");
    const startButton = document.querySelector("#start-button");
    const overlay = document.querySelector("#game-overlay");
    const eventBus = new EventBus();
    const render = new Renderer(canvas, nextCanvas, eventBus, GAME_CONFIG.cellSize, GAME_CONFIG.colors);
    new UIManager(eventBus, overlay, startButton, uiLvl, uiLines, uiScore);
    new AnimationManager(eventBus);
    new InputHandler(eventBus);

    ////////////////////////////////////////////
    let game = null;
    let isAnimating = false;
    function gameInit(){
        const grid = new Grid(GAME_CONFIG.mainGrid.width, GAME_CONFIG.mainGrid.height);
        const previewGrid = new Grid(GAME_CONFIG.previewGrid.width, GAME_CONFIG.previewGrid.height);
        const pieceFactory = new PieceFactory();
        const game = new Game(eventBus, grid, previewGrid, pieceFactory);
        eventBus.emit("render", game.getRenderState());
        return game;
    }
    function gameStart(){
        if(isAnimating) return;
        //Я подпишусь на эту функцию в EventBus. Событие будет вызываться при клавише пробел
        if (game) {
            window.cancelAnimationFrame(game.loopRequestID);
            game.unSetupInputListeners();
            game.unsubscribleStartGameplay();
            game.unsubscribleStopGameplay();
            //game.unSetupInputListeners() // <-- ГЛАВНОЕ: УДАЛЕНИЕ СЛУШАТЕЛЕЙ СТАРОЙ ИГРЫ

        }
        game = gameInit()
        game.start();

    }
    function gameEnd(){
        if (game) {
            game.unSetupInputListeners();
            game.unsubscribleStartGameplay();
            game.unsubscribleStopGameplay();
            window.cancelAnimationFrame(game.loopRequestID);
            eventBus.emit("showGameOver", game.uiState())
        }
    }
    eventBus.on("set-is-animating", ({state})=>{
        isAnimating = state;
    });
    eventBus.on("gameEnd", gameEnd);
    eventBus.on("gameStart", gameStart);
    game = gameInit();
})