/*
This file is part of the Notesnook project (https://notesnook.com/)

Copyright (C) 2023 Streetwriters (Private) Limited

This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program.  If not, see <http://www.gnu.org/licenses/>.
*/

import "isomorphic-fetch";
import path from "path";
import fs from "fs/promises";
import { langen } from "../../editor/scripts/langen.mjs";
import { fileURLToPath } from "url";

const __filename = fileURLToPath(import.meta.url);
const __dirname = path.dirname(__filename);
const ROOT_DIR = path.resolve(path.join(__dirname, ".."));

const languagesList = await langen(
  ROOT_DIR,
  path.join(ROOT_DIR, "src", "utils", "templates", "html", "languages")
);
const languageIndex = `function hasRequire() {
  return (
    typeof require === "function" &&
    (typeof IS_DESKTOP_APP === "undefined" || !IS_DESKTOP_APP)
  );
}

export async function loadLanguage(language) {
  switch (language) {
    ${languagesList
      .map(({ filename, alias }) => {
        return [
          ...(alias || []).map((a) => `case "${a}":`),
          `case "${filename}":`,
          `return hasRequire() ? require("./${filename}.js") : await import("./${filename}.js");`
        ].join("\n");
      })
      .join("\n\n")}
  }
}`;

await fs.writeFile(
  path.join(
    ROOT_DIR,
    "src",
    "utils",
    "templates",
    "html",
    "languages",
    "index.js"
  ),
  languageIndex
);