/// <reference types="ace" />

import { Debounce } from "./debounce.js";
import { PlaygroundConsole } from "./playground_console.js";
import { CodeRunner } from "./code_runner.js";
import { SpriteEditor } from "./sprite_editor.js";
import { SpriteProvider } from "./sprite_provider.js";
import { Gamelib } from "./gamelib.js";
import { CodeStopper } from "./code_stopper.js";
import { Vermiparous } from "./vermiparous.js";
import { promptUpload } from "./prompt_upload.js";
import { GamelibCompleter } from "./gamelib_completer.js";
import { TextCompleter } from "./text_completer.js";
import { ConsoleInput } from "./console_input.js";

const playgroundConsole = new PlaygroundConsole(
    document.querySelector("#console-code"),
);

const codeStopper = new CodeStopper();

const spriteProvider = new SpriteProvider();

const codeRunner = new CodeRunner(playgroundConsole, codeStopper);
const spriteEditor = new SpriteEditor(document.querySelector("#sprite-editor-container"), []);

new ConsoleInput(document.querySelector("#console-input"), playgroundConsole, codeRunner);

const gamelib = new Gamelib(
    playgroundConsole,
    codeStopper,
    spriteProvider,
    document.querySelector("canvas"),
);

globalThis.karlkoder = {
    lib() {
        return gamelib;
    },
};

addEventListener("keydown", (ev) => {
    if (ev.ctrlKey && ev.key === "s") {
        ev.preventDefault();
        saveKarlKoder();
    }
});

const editor = ace.edit("editor");
editor.setTheme("ace/theme/gruvbox");
editor.session.setMode("ace/mode/javascript");

const langTools = ace.require("ace/ext/language_tools");

editor.setOptions({
    enableBasicAutocompletion: true,
    enableLiveAutocompletion: true,
});

langTools.setCompleters([new GamelibCompleter(), new TextCompleter()]);

editor.setValue(sessionStorage.getItem("code") ?? editor.getValue(), -1);

const importButton = document.querySelector("#import-button");
const runButton = document.querySelector("#run-button");
const saveButton = document.querySelector("#save-button");
const saveDropdown = document.querySelector("#save-dropdown");
const saveJsButton = document.querySelector("#save-js");
const saveHtmlButton = document.querySelector("#save-html");
const saveKarlkoderButton = document.querySelector("#save-karlkoder");
const toggleSpriteEditorButton = document.querySelector("#toggle-sprite-editor-button");

const sessionSaveDebounce = new Debounce(1000);
editor.addEventListener("change", () => {
    sessionSaveDebounce.run(() => {
        sessionStorage.setItem("code", editor.getValue());
    });
});

importButton.onclick = async () => {
    const files = await promptUpload(".karlkode", false);
    if (files.length === 0) {
        return;
    }
    if (files.length > 1) {
        throw new Error(
            `unreachable: something went wrong ! files.length > 1 : files.length = ${files.length}`,
        );
    }
    const items = Vermiparous.de(await fetch(URL.createObjectURL(files[0])).then((x) => x.bytes()));
    const sprites = items
        .filter((x) => x.tag === "asset")
        .map((x) => {
            delete x.tag;
            return x;
        });
    const code = items.find((x) => x.tag === "code");
    delete code.tag;
    spriteEditor.importSprites(
        sprites.map(({ name, mime, content }) => ({ name, mime, bytes: content })),
    );
    const dec = new TextDecoder();
    editor.setValue(dec.decode(code.content));
};

runButton.onclick = () => {
    const code = editor.getValue();

    karlkoder.lib().spriteProvider.injectSprites(spriteEditor.sprites);
    codeRunner.setCode(code);
    codeRunner.toggle();
    document.querySelector("canvas").focus();

    if (codeRunner.isRunning) {
        runButton.textContent = "✋ Stop";
        runButton.classList.add("active");
    } else {
        runButton.textContent = "🏃 Run";
        runButton.classList.remove("active");
    }
};

function downloadFile(content, extension, mime) {
    const filename = prompt("Filename?");

    const blob = new Blob([content], { type: mime });
    const url = URL.createObjectURL(blob);

    const element = document.createElement("a");

    element.href = url;
    element.download = filename.endsWith(extension) ? filename : filename + extension;
    element.style.display = "none";

    document.body.appendChild(element);

    element.click();

    document.body.removeChild(element);
}

function minifyJs(code) {
    return code
        .replace(/[\s\n]+/g, " ")
        .replace(/;\s+/g, ";");
}

saveButton.onclick = () => {
    if (saveButton.classList.contains("active")) {
        saveButton.classList.remove("active");
        saveDropdown.style.display = "none";
    } else {
        saveButton.classList.add("active");

        saveDropdown.style.display = "block";
    }
};

saveJsButton.onclick = () => {
    downloadFile(editor.getValue(), ".js", "text/javascript");
};

saveHtmlButton.onclick = async () => {
    const js = editor.getValue()
        .split("\n")
        .map((line) => " ".repeat(12) + line).join("\n");
    let lib = await (await fetch("./js/lib.js")).text();
    lib = minifyJs(lib);

    const html = `
<!DOCTYPE html>
<html>
    <head>
        <meta charset="UTF-8">
        <meta name="generator" content="karlkoder playground">
        <title>Game</title>
        <style>
            body {
                display: flex;
                justify-content: center;
                align-items: center;
                height: 100vh;
                margin: 0;
            }


    An iterable object such as an Array, having ArrayBuffers, TypedArrays, DataViews, Blobs, strings, or a mix of any of such elements, that will be put inside the Blob. Strings should be well-formed Unicode, and lone surrogates are sanitized using the same algorithm as String.prototype.toWellFormed().
        </style>
        <script type="importmap">
            {
                "imports": {
                    "lib": "data:text/javascript,${encodeURIComponent(lib)}"
                }
            }
        </script>
        <script type="module">
${js}
        </script>
    </head>
    <body>
        <canvas width="480" height="360"></canvas>
    </body>
</html>`;

    downloadTextFile(html, ".html", "text/html");
};

function saveKarlKoder() {
    downloadFile(
        Vermiparous.en(
            editor.getValue(),
            spriteEditor.sprites,
        ),
        ".karlkode",
    );
}

saveKarlkoderButton.onclick = () => {
    saveKarlKoder();
};

toggleSpriteEditorButton.addEventListener("click", () => spriteEditor.toggleEditor());