/*
 This file is part of GNU Taler
 (C) 2020 Taler Systems S.A.

 GNU Taler 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, or (at your option) any later version.

 GNU Taler 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
 GNU Taler; see the file COPYING.  If not, see <http://www.gnu.org/licenses/>
 */

/**
 * Convert a <lang>.po file into a JavaScript / TypeScript expression.
 */

// @ts-ignore
import * as po2json from "po2json";
import * as fs from "fs";
import * as path from "path";

const files = fs
  .readdirSync("./src/i18n")
  .filter((x) => x.endsWith(".po"))
  .map((x) => path.join("./src/i18n/", x));

if (files.length === 0) {
  console.error("no .po files found in src/i18n/");
  process.exit(1);
}

console.log(files);

const chunks: string[] = [];

for (const filename of files) {
  const m = filename.match(/([a-zA-Z0-9-_]+).po/);

  if (!m) {
    console.error("error: unexpected filename (expected <lang>.po)");
    process.exit(1);
  }

  const lang = m[1];
  const pojson = po2json.parseFileSync(filename, {
    format: "jed1.x",
    fuzzy: true,
  });
  const s =
    "strings['" + lang + "'] = " + JSON.stringify(pojson, null, "  ") + ";\n\n";
  chunks.push(s);
}

const tsContents = chunks.join("");

fs.writeFileSync("src/i18n/strings.ts", tsContents);