/*
 * SonarQube
 * Copyright (C) 2009-2024 SonarSource SA
 * mailto:info AT sonarsource DOT com
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser 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
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with this program; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 */

import fs from 'node:fs';
import path from 'node:path';
import { promisify } from 'node:util';

const readFileAsync = promisify(fs.readFile);

const l10nFilePath = '../../../sonar-core/src/main/resources/org/sonar/l10n/core.properties';

const extensionsL10nFilepaths = [
  '../../../private/core-extension-enterprise-server/src/main/resources/org/sonar/l10n/governance.properties',
  '../../../private/core-extension-license/src/main/resources/org/sonar/l10n/license.properties',
  '../../../private/core-extension-developer-server/src/main/resources/org/sonar/l10n/developer-server.properties',
  '../../../private/core-extension-securityreport/src/main/resources/org/sonar/l10n/securityreport.properties',
];

const STATUS_OK = 200;
const STATUS_ERROR = 500;

function getFileMessage(filename) {
  return readFileAsync(path.resolve(__dirname, filename), 'utf-8').then(
    (content) => {
      const messages = {};
      const lines = content.split('\n');
      lines.forEach((line) => {
        const parts = line.split('=');
        if (parts.length > 1) {
          messages[parts[0]] = parts.slice(1).join('=');
        }
      });
      return messages;
    },
    () => ({}),
  );
}

function getMessages() {
  return Promise.all(
    [l10nFilePath, ...extensionsL10nFilepaths].map((filename) => getFileMessage(filename)),
  ).then((filesMessages) => filesMessages.reduce((acc, messages) => ({ ...acc, ...messages }), {}));
}

// this is a custom l10n-dev-server when proxying locally against another environment so that
// we don't need to rebuild the server when changing the l10n files
export const viteDevServerL10nPlugin = () => {
  return {
    name: 'l10n-dev-server',
    apply: 'serve',
    configureServer(server) {
      const app = server.middlewares;
      app.use('/api/l10n', (_req, res) => {
        getMessages()
          .then((messages) => {
            res.writeHead(STATUS_OK, { 'Content-Type': 'application/json' });
            res.end(JSON.stringify({ effectiveLocale: 'en', messages }));
          })
          .catch((e) => {
            console.error(e);
            res.writeHead(STATUS_ERROR);
            res.end(e);
          });
      });
    },
  };
};