// (c) Copyright Ascensio System SIA 2009-2024
//
// This program is a free software product.
// You can redistribute it and/or modify it under the terms
// of the GNU Affero General Public License (AGPL) version 3 as published by the Free Software
// Foundation. In accordance with Section 7(a) of the GNU AGPL its Section 15 shall be amended
// to the effect that Ascensio System SIA expressly excludes the warranty of non-infringement of
// any third-party rights.
//
// This program is distributed WITHOUT ANY WARRANTY, without even the implied warranty
// of MERCHANTABILITY or FITNESS FOR A PARTICULAR  PURPOSE. For details, see
// the GNU AGPL at: http://www.gnu.org/licenses/agpl-3.0.html
//
// You can contact Ascensio System SIA at Lubanas st. 125a-25, Riga, Latvia, EU, LV-1021.
//
// The  interactive user interfaces in modified source and object code versions of the Program must
// display Appropriate Legal Notices, as required under Section 5 of the GNU AGPL version 3.
//
// Pursuant to Section 7(b) of the License you must retain the original Product logo when
// distributing the program. Pursuant to Section 7(e) we decline to grant you any rights under
// trademark law for use of our trademarks.
//
// All the Product's GUI elements, including illustrations and icon sets, as well as technical writing
// content are licensed under the terms of the Creative Commons Attribution-ShareAlike 4.0
// International. See the License terms at http://creativecommons.org/licenses/by-sa/4.0/legalcode

/* eslint-disable func-names */
/* eslint-disable no-console */
/* eslint-disable no-restricted-syntax */
/* eslint-disable @typescript-eslint/no-var-requires */
const path = require("path");
const fs = require("fs");
const { readdir } = require("fs").promises;
// @ts-expect-error path is correct
const appSettings = require("../../../../buildtools/config/appsettings.json");

const beforeBuild = async (
  pathsToLocales,
  pathToFile,
  additionalPath,
  isSSR = false,
) => {
  async function* getFiles(dir) {
    const dirents = await readdir(dir, { withFileTypes: true });
    for (const dirent of dirents) {
      const res = path.resolve(dir, dirent.name);

      if (dirent.isDirectory()) {
        yield* getFiles(res);
      } else {
        yield { path: res, fileName: dirent.name };
      }
    }
  }

  const getLocalesFiles = async () => {
    const files = [];

    for await (const p of pathsToLocales) {
      for await (const f of getFiles(p)) {
        if (f) files.push(f);
      }
    }

    if (additionalPath) {
      for await (const f of getFiles(additionalPath?.path)) {
        if (f && additionalPath?.files?.indexOf(f?.fileName) > -1)
          files.push(f);
      }
    }

    return files;
  };

  const localesFiles = await getLocalesFiles();

  const cultures = appSettings.web.cultures;

  const collectionByLng = new Map();
  const truthLng = new Map();

  let importString = "\n";

  localesFiles.forEach((file) => {
    const splitPath = file.path.split(path.sep);

    const length = splitPath.length;

    const url = [
      splitPath[length - 3],
      splitPath[length - 2],
      splitPath[length - 1],
    ].join("/");

    const fileName = splitPath[length - 1].split(".")[0];

    const lng = splitPath[length - 2];

    let language = lng === "en-US" || lng === "en-GB" ? "en" : lng;

    if (cultures.indexOf(language) === -1) {
      return;
    }

    const splitted = lng.split("-");

    if (splitted.length === 2 && splitted[0] === splitted[1].toLowerCase()) {
      language = splitted[0];
    }

    truthLng.set(language, language.replaceAll("-", ""));

    language = language.replaceAll("-", "");

    const items = collectionByLng.get(language);

    if (items && items.length > 0) {
      items.push(fileName);
      collectionByLng.set(language, items);
    } else {
      collectionByLng.set(language, [fileName]);
    }

    const alias =
      additionalPath?.files?.indexOf(splitPath[length - 1].toString()) > -1
        ? additionalPath.alias
        : fileName.indexOf("Common") === -1
          ? "ASSETS_DIR"
          : "PUBLIC_DIR";

    importString = `${importString}
      import ${fileName}${language}Url from "${alias}/${url}${isSSR ? "" : "?url"}";\n`;
  });

  let content = `//THIS FILE IS AUTO GENERATED\n//DO NOT EDIT AND DELETE IT\n
    ${importString}`;

  let generalCollection = `\n export const translations = new Map([`;

  collectionByLng.forEach((collection, key) => {
    let collectionString = `\n const ${key} = new Map([`;

    collection.forEach((c, index) => {
      collectionString += `\n["${c}", ${c}${key}Url]`;

      if (index !== collection.length - 1) collectionString += `,`;
    });

    collectionString += `\n]);`;

    content += collectionString;
  });

  truthLng.forEach((col, key) => {
    generalCollection += `\n["${key}", ${col}],`;
  });

  generalCollection += `\n]);`;

  content += generalCollection;

  fs.writeFile(pathToFile, content, "utf8", function (err) {
    if (err) throw new Error(Error);

    console.log("The auto generated translations file has been created!");
  });
};

module.exports = beforeBuild;