import { readFileSync, writeFileSync } from "node:fs";
import { dirname, join } from "node:path";
import { fileURLToPath } from "node:url";
import { CONVERSION_PRESETS } from "../packages/shared/src/conversion-presets.ts";

const __dirname = dirname(fileURLToPath(import.meta.url));
const I18N_DIR = join(__dirname, "../packages/shared/src/i18n");
const BEGIN = "    // BEGIN conversion-presets (generated by scripts/generate-conversion-i18n.mjs)";
const END = "    // END conversion-presets";

// Per-locale phrasing: name template and description template. {from}/{to} are format labels (kept as-is).
const L = {
  en: {
    name: (f, t) => `${f} to ${t}`,
    desc: (f, t) => `Convert ${f} to ${t} online. Fast, free, private, no signup.`,
  },
  de: {
    name: (f, t) => `${f} in ${t} umwandeln`,
    desc: (f, t) => `${f} online in ${t} umwandeln. Schnell, kostenlos und privat.`,
  },
  es: {
    name: (f, t) => `${f} a ${t}`,
    desc: (f, t) => `Convierte ${f} a ${t} en línea. Rápido, gratis y privado.`,
  },
  fr: {
    name: (f, t) => `${f} en ${t}`,
    desc: (f, t) => `Convertir ${f} en ${t} en ligne. Rapide, gratuit et privé.`,
  },
  it: {
    name: (f, t) => `Da ${f} a ${t}`,
    desc: (f, t) => `Converti ${f} in ${t} online. Veloce, gratuito e privato.`,
  },
  "pt-BR": {
    name: (f, t) => `${f} para ${t}`,
    desc: (f, t) => `Converta ${f} para ${t} online. Rápido, grátis e privado.`,
  },
  nl: {
    name: (f, t) => `${f} naar ${t}`,
    desc: (f, t) => `Zet ${f} online om naar ${t}. Snel, gratis en privé.`,
  },
  sv: {
    name: (f, t) => `${f} till ${t}`,
    desc: (f, t) => `Konvertera ${f} till ${t} online. Snabbt, gratis och privat.`,
  },
  pl: {
    name: (f, t) => `${f} na ${t}`,
    desc: (f, t) => `Konwertuj ${f} na ${t} online. Szybko, za darmo i prywatnie.`,
  },
  ru: {
    name: (f, t) => `${f} в ${t}`,
    desc: (f, t) => `Конвертируйте ${f} в ${t} онлайн. Быстро, бесплатно и приватно.`,
  },
  uk: {
    name: (f, t) => `${f} у ${t}`,
    desc: (f, t) => `Конвертуйте ${f} у ${t} онлайн. Швидко, безкоштовно та приватно.`,
  },
  tr: {
    name: (f, t) => `${f} - ${t}`,
    desc: (f, t) => `${f} dosyasını çevrimiçi ${t} biçimine dönüştürün. Hızlı, ücretsiz ve gizli.`,
  },
  ar: {
    name: (f, t) => `${f} إلى ${t}`,
    desc: (f, t) => `حوّل ${f} إلى ${t} عبر الإنترنت. سريع ومجاني وخاص.`,
  },
  hi: {
    name: (f, t) => `${f} से ${t}`,
    desc: (f, t) => `${f} को ${t} में ऑनलाइन बदलें। तेज़, मुफ़्त और निजी।`,
  },
  vi: {
    name: (f, t) => `${f} sang ${t}`,
    desc: (f, t) => `Chuyển đổi ${f} sang ${t} trực tuyến. Nhanh, miễn phí và riêng tư.`,
  },
  id: {
    name: (f, t) => `${f} ke ${t}`,
    desc: (f, t) => `Konversi ${f} ke ${t} online. Cepat, gratis, dan privat.`,
  },
  th: {
    name: (f, t) => `${f} เป็น ${t}`,
    desc: (f, t) => `แปลง ${f} เป็น ${t} ออนไลน์ รวดเร็ว ฟรี และเป็นส่วนตัว`,
  },
  ja: {
    name: (f, t) => `${f}を${t}に変換`,
    desc: (f, t) => `${f}を${t}にオンラインで変換。高速、無料、プライベート。`,
  },
  ko: {
    name: (f, t) => `${f}을(를) ${t}(으)로`,
    desc: (f, t) => `${f}을(를) ${t}(으)로 온라인 변환. 빠르고 무료이며 비공개입니다.`,
  },
  "zh-CN": {
    name: (f, t) => `${f} 转 ${t}`,
    desc: (f, t) => `在线将 ${f} 转换为 ${t}。快速、免费、私密。`,
  },
  "zh-TW": {
    name: (f, t) => `${f} 轉 ${t}`,
    desc: (f, t) => `線上將 ${f} 轉換為 ${t}。快速、免費、私密。`,
  },
};

// Localized "Extract Text from Image (OCR)" per locale (keep the "(OCR)" token literal).
const OCR_NAMES = {
  en: "Extract Text from Image (OCR)",
  de: "Text aus Bild extrahieren (OCR)",
  es: "Extraer texto de imagen (OCR)",
  fr: "Extraire le texte d'une image (OCR)",
  it: "Estrai testo da immagine (OCR)",
  "pt-BR": "Extrair texto de imagem (OCR)",
  nl: "Tekst uit afbeelding halen (OCR)",
  sv: "Extrahera text från bild (OCR)",
  pl: "Wyodrębnij tekst z obrazu (OCR)",
  ru: "Извлечь текст из изображения (OCR)",
  uk: "Витягти текст із зображення (OCR)",
  tr: "Görüntüden Metin Çıkarma (OCR)",
  ar: "استخراج النص من صورة (OCR)",
  hi: "छवि से टेक्स्ट निकालें (OCR)",
  vi: "Trích xuất văn bản từ ảnh (OCR)",
  id: "Ekstrak Teks dari Gambar (OCR)",
  th: "แยกข้อความจากรูปภาพ (OCR)",
  ja: "画像から文字を抽出 (OCR)",
  ko: "이미지에서 텍스트 추출 (OCR)",
  "zh-CN": "从图片提取文字 (OCR)",
  "zh-TW": "從圖片擷取文字 (OCR)",
};

function block(locale) {
  const tpl = L[locale] ?? L.en;
  const lines = CONVERSION_PRESETS.map((p) => {
    const name = tpl.name(p.from, p.to).replace(/[\\"]/g, "\\$&");
    const desc = tpl.desc(p.from, p.to).replace(/[\\"]/g, "\\$&");
    return `    "${p.id}": { name: "${name}", description: "${desc}" },`;
  });
  return [BEGIN, ...lines, END].join("\n");
}

function escapeRe(s) {
  return s.replace(/[.*+?^${}()|[\]\\]/g, "\\$&");
}

/** Rename the display tools.ocr.name (the first `ocr:` block, the one whose first key is `name`). */
function renameOcr(src, locale) {
  const name = (OCR_NAMES[locale] ?? OCR_NAMES.en).replace(/[\\"]/g, "\\$&");
  return src.replace(/(ocr:\s*\{\s*name:\s*")(?:[^"\\]|\\.)*(")/, `$1${name}$2`);
}

function injectInto(file, locale) {
  let src = readFileSync(file, "utf8");
  const gen = block(locale);
  if (src.includes(BEGIN)) {
    src = src.replace(new RegExp(`${escapeRe(BEGIN)}[\\s\\S]*?${escapeRe(END)}`), gen);
  } else {
    // Insert right after the `tools: {` line.
    src = src.replace(/(\n\s*tools:\s*\{\n)/, `$1${gen}\n`);
  }
  src = renameOcr(src, locale);
  writeFileSync(file, src);
}

const LOCALES = [
  "en",
  "zh-CN",
  "zh-TW",
  "ja",
  "ko",
  "es",
  "fr",
  "it",
  "pt-BR",
  "de",
  "nl",
  "sv",
  "ru",
  "pl",
  "uk",
  "ar",
  "tr",
  "hi",
  "vi",
  "id",
  "th",
];
for (const code of LOCALES) {
  injectInto(join(I18N_DIR, `${code}.ts`), code);
}
console.log(
  `Injected ${CONVERSION_PRESETS.length} preset entries into ${LOCALES.length} locales; renamed tools.ocr.name`,
);