import { Robot } from "./robot.js";
import { GameWorld } from "./gameworld.js";

const consoleElement = document.getElementById("console");
const gameCanvas = document.getElementById("gameCanvas");
const ctx = gameCanvas.getContext("2d");

const gameWorld = new GameWorld();

let monacoEditor;

let pyodideWorker = startPyodideWorker();
let robots = null;//createInitialRobots();
//gameWorld.addRobot(robots["player"]);
let paused = false;

let scale = 1;      // Zoom level
let offsetX = 0;    // Pan X
let offsetY = 0;    // Pan Y
let isPanning = false;
let startX, startY; // Mouse start positions


// ✅ Function to create the Pyodide Worker
function startPyodideWorker() {
    const worker = new Worker("pyodide-worker.js?v=" + Date.now());

    // ✅ Reattach the event listener when a new worker is created
    worker.onmessage = (event) => {
        if (paused) return;

        switch (event.data.type) {
            case "console":
                logToConsole(event.data.data);
                break;
            case "error":
                logToConsole(`<span style="color:red;">${event.data.message}</span>`);
                break;
            case "fire":
                fire();
                break;
            case "turn":
                turn(event.data.data);
                break;
            case "move":
                move(event.data.data);
                break;
        }
    };

    return worker;
}

// ✅ Function to create initial robots
function createInitialRobots() {
    return {
        "player": new Robot("player", 50, 50, "blue")
        //"enemy1": new Robot("enemy1", 200, 150, "red"),
        //"enemy2": new Robot("enemy2", 400, 250, "red")
    };
}

// ✅ Function to log messages to console
const maxLines = 64;
const logLines = [];

function logToConsole(text) {
  if (text.includes("Pyodide not initialized yet.")) return;

  const newLines = text.split('\n').map(line => line.trim()).filter(line => line !== "");

  // Add new lines to the array
  logLines.push(...newLines);

  // Keep only the last maxLines entries
  if (logLines.length > maxLines) {
    logLines.splice(0, logLines.length - maxLines);
  }

  // Clear console
  consoleElement.innerHTML = "";

  // Create and append separate divs for each line
  logLines.forEach(lineText => {
    const lineDiv = document.createElement('div');
    lineDiv.textContent = lineText;
    consoleElement.appendChild(lineDiv);
  });

  // Scroll to bottom
  consoleElement.scrollTop = consoleElement.scrollHeight;
}


function clearConsole() {
    logLines.length = 0;              // Empty the logLines array
    consoleElement.innerHTML = "";    // Clear the console DOM element
}

// ✅ Game Control Functions
function fire() {
    logToConsole("<b>🔥 Gun Fired! 🔥</b>");
}

function turn(deg) {
    robots["player"].turn(deg);
}

function move(distance) {
    robots["player"].move(distance);
}

// ✅ Pause/Resume Function
function togglePause() {
    paused = !paused;
    document.getElementById("pause-button").innerText = paused ? "Resume" : "Pause";
}

// ✅ Reset Function (Fixed)
function resetGame() {
    // Terminate the worker
    pyodideWorker.terminate();
    clearConsole();

    // Restart the worker and rebind event listener
    pyodideWorker = startPyodideWorker();

    // Reset the robots to their initial state
    robots = createInitialRobots();
    gameWorld.reset(robots["player"]);
    //gameWorld.addRobot(robots["player"]);

    // Clear the console
    consoleElement.innerHTML = "";

    // Unpause the game if it was paused
    paused = false;
    document.getElementById("pause-button").innerText = "Pause";

    logToConsole("Welcome to the game! Type your Python code in the editor and click 'Compile' to execute it.");
}

const targetFPS = 30;
const targetInterval = 1000 / targetFPS;  // Time in milliseconds per frame
let lastFrameTime = 0;

// ✅ Game Loop
function gameLoop(timestamp) {
    const deltaTime = timestamp - lastFrameTime;
    // If enough time has passed since the last frame, update and draw
    if (deltaTime >= targetInterval) {
        lastFrameTime = timestamp;
        if (!paused) {
            ctx.resetTransform();
            // Fill the entire visible canvas to remove artifacts
            ctx.fillStyle = "#DDD";
            ctx.fillRect(0, 0, gameCanvas.width, gameCanvas.height);

            ctx.translate(offsetX, offsetY);  // Apply panning
            ctx.scale(scale, scale);          // Apply zooming

            gameWorld.update();
            gameWorld.draw(ctx);
            if (gameWorld.checkPlayerCompletedTask()){
                logToConsole("<b>🏁 Task Completed! 🏁</b>");
                togglePause();
                gameWorld.currentLevel++;
            }

            pyodideWorker.postMessage({
                type: "game_state",
                state: gameWorld
            });


        }
    }
    requestAnimationFrame(gameLoop);
}

// ✅ Update "distance" and "speed" every 2 seconds with random values
function updateSensorData() {
    const distance = Math.random() * 100; // Random distance (0-100)
    const speed = Math.random() * 10; // Random speed (0-10)
    console.log(`Distance: ${distance.toFixed(2)}, Speed: ${speed.toFixed(2)}`);
    pyodideWorker.postMessage({
        type: "sensor_update",
        data: { distance, speed }
    });

    //logToConsole(`📡 Sensor Update - Distance: ${distance.toFixed(2)}, Speed: ${speed.toFixed(2)}`);
}

//setInterval(updateSensorData, 2000); // Call every 2 seconds


document.getElementById("compile-button").addEventListener("click", () => {
    if (paused) return;
    
    // Use the Monaco Editor instance to get the code
    let code = monacoEditor.getValue(); // Get text from the editor
    console.log(code);

    code = code.replace(/time\.sleep\(/g, "await time.sleep(");
    console.log(code);
    consoleElement.innerHTML = "";
    pyodideWorker.postMessage({
        type: "execute",
        code: code
    });
});


document.getElementById("pause-button").addEventListener("click", togglePause);
document.getElementById("reset-button").addEventListener("click", resetGame);

gameCanvas.addEventListener("wheel", (event) => {
    event.preventDefault();

    const scaleFactor = 1.1;
    const mouseX = event.offsetX;
    const mouseY = event.offsetY;

    // Convert mouse coordinates to world coordinates (before zoom)
    const worldX = (mouseX - offsetX) / scale;
    const worldY = (mouseY - offsetY) / scale;

    // Apply zoom
    if (event.deltaY < 0) {
        scale *= scaleFactor; // Zoom in
    } else {
        scale /= scaleFactor; // Zoom out
    }

    // Keep zoom within limits
    scale = Math.max(0.5, Math.min(3, scale));

    // Adjust offset so zooming is centered at mouse position
    offsetX = mouseX - worldX * scale;
    offsetY = mouseY - worldY * scale;
});


gameCanvas.addEventListener("mousedown", (event) => {
    isPanning = true;
    startX = event.clientX - offsetX;
    startY = event.clientY - offsetY;
});

gameCanvas.addEventListener("mousemove", (event) => {
    if (!isPanning) return;
    offsetX = event.clientX - startX;
    offsetY = event.clientY - startY;
});

gameCanvas.addEventListener("mouseup", () => {
    isPanning = false;
});

const textarea = document.getElementById('python-code');

// textarea.addEventListener('keydown', function (event) {
//     if (event.key === 'Tab') {
//         event.preventDefault();
//         const start = this.selectionStart;
//         const end = this.selectionEnd;
//         this.value = this.value.substring(0, start) + '   ' + this.value.substring(end);
//         this.selectionStart = this.selectionEnd = start + 1;
//     }
// });

// game.js

export function initializeMonaco() {
    require.config({ paths: { vs: "https://cdn.jsdelivr.net/npm/monaco-editor@0.39.0/min/vs" } });

    require(["vs/editor/editor.main"], function () {
        // Store the editor instance in the global variable
        monacoEditor = monaco.editor.create(document.getElementById("monaco-editor"), {
            value: "# Type your Python code here\n",
            language: "python",
            theme: "vs-dark",
            automaticLayout: true
        });
    });
}

function setupCanvas() {
    const canvas = document.getElementById("gameCanvas");
    const context = canvas.getContext("2d");

    // Get the device pixel ratio
    const dpr = window.devicePixelRatio || 1;

    // Adjust the canvas size for high-DPI displays
    const rect = canvas.getBoundingClientRect();
    canvas.width = rect.width * dpr;
    canvas.height = rect.height * dpr;

    // Scale the drawing context
    context.scale(dpr, dpr);

    // Optional: Clear the canvas for better visuals
    context.clearRect(0, 0, canvas.width, canvas.height);
}

// Call this function when the page loads

fetch('/data/levels.json')
    .then(response => response.json())
    .then(data => {
        gameWorld.levelData = data;
        setupCanvas();

        resetGame(); // Initialize the game and robots
        // Start game loop
        gameLoop();
    });