// Sirius.X runtime translation.
//
// The pages are written in English. This script picks the reader's language
// (saved choice → ?lang= → browser languages → English), fetches
// i18n/<lang>.json — a flat map of English text → translation — and swaps
// every matching text node, placeholder, title and aria-label. A
// MutationObserver keeps script-built content (search rows, the register
// modal, portal rows, footer, profile menu) translated as it appears, so
// page scripts never need to know about languages.
//
// Rules of the road:
//   • Keys are the exact English text of a node (whitespace collapsed).
//   • <code>, <pre>, <kbd>, <textarea>, .mono and anything under
//     [translate="no"] / [data-i18n-skip] is left alone — names, hashes,
//     record keys and addresses must never change.
//   • English is the source of truth: every node remembers its English
//     text, so switching languages (or back to English) is lossless.
//   • Adding a language = one JSON file in i18n/ + one line in LANGS.
//
// Exposed as window.siriusI18n = { lang, langs, t(text), setLang(code) }.

(function () {
  var STORE = "sirius-lang";
  var CACHE = "sirius-i18n:";
  var VERSION = "20260920d"; // bump when dictionaries change
  var LANGS = {
    en: "English",
    de: "Deutsch",
    el: "Ελληνικά",
    ru: "Русский",
    es: "Español",
    fr: "Français",
    pt: "Português",
  };
  var SKIP_TAGS = { SCRIPT: 1, STYLE: 1, CODE: 1, PRE: 1, KBD: 1, TEXTAREA: 1, NOSCRIPT: 1, SVG: 1 };
  var ATTRS = ["placeholder", "title", "aria-label"];

  var base = (function () {
    try { return new URL("../i18n/", document.currentScript.src).href; }
    catch (e) { return "./i18n/"; }
  })();

  var dict = null;      // English -> translation for the active language
  var lang = "en";
  var applying = false;

  // ---------- language choice ----------
  function normalise(code) {
    if (!code) return null;
    var primary = String(code).toLowerCase().split(/[-_]/)[0];
    return LANGS[primary] ? primary : null;
  }
  function detect() {
    var fromQuery = null;
    try { fromQuery = normalise(new URLSearchParams(location.search).get("lang")); } catch (e) {}
    if (fromQuery) { save(fromQuery); return fromQuery; }
    var saved = null;
    try { saved = normalise(localStorage.getItem(STORE)); } catch (e) {}
    if (saved) return saved;
    var list = navigator.languages && navigator.languages.length ? navigator.languages : [navigator.language];
    for (var i = 0; i < list.length; i++) { var n = normalise(list[i]); if (n) return n; }
    return "en";
  }
  function save(code) { try { localStorage.setItem(STORE, code); } catch (e) {} }

  // ---------- dictionary loading (cache first, network second) ----------
  function readCache(code) {
    try {
      var raw = localStorage.getItem(CACHE + code);
      if (!raw) return null;
      var obj = JSON.parse(raw);
      return obj && obj.v === VERSION ? obj.d : null;
    } catch (e) { return null; }
  }
  function writeCache(code, d) {
    try { localStorage.setItem(CACHE + code, JSON.stringify({ v: VERSION, d: d })); } catch (e) {}
  }
  function load(code) {
    if (code === "en") return Promise.resolve({});
    var cached = readCache(code);
    var net = fetch(base + code + ".json?v=" + VERSION, { cache: "no-cache" })
      .then(function (r) { if (!r.ok) throw new Error("i18n " + r.status); return r.json(); })
      .then(function (d) { writeCache(code, d); return d; });
    if (cached) { net.then(function (d) { if (lang === code) { dict = d; applyAll(); } }).catch(function () {}); return Promise.resolve(cached); }
    return net;
  }

  // ---------- translation ----------
  function t(text) {
    if (!dict) return text;
    var key = String(text).replace(/\s+/g, " ").trim();
    // An empty string is a valid translation (the word is dropped in that
    // language) — only a missing key falls back to English.
    var out = Object.prototype.hasOwnProperty.call(dict, key) ? dict[key] : undefined;
    return typeof out === "string" ? out : text;
  }
  function skip(el) {
    for (var e = el; e && e.nodeType === 1; e = e.parentNode) {
      if (SKIP_TAGS[e.tagName]) return true;
      if (e.getAttribute) {
        if (e.getAttribute("translate") === "no" || e.hasAttribute("data-i18n-skip")) return true;
        var cls = e.getAttribute("class") || "";
        if (/(^|\s)mono(\s|$)/.test(cls)) return true;
      }
    }
    return false;
  }
  function translateText(node) {
    var cur = node.nodeValue;
    if (!cur || !/\S/.test(cur)) return;
    // A page script changed the text since we last touched it → new source.
    if (node.__i18nOut !== cur) { node.__i18nSrc = cur; node.__i18nOut = null; }
    var src = node.__i18nSrc != null ? node.__i18nSrc : cur;
    var key = src.replace(/\s+/g, " ").trim();
    var has = dict && key && Object.prototype.hasOwnProperty.call(dict, key) && typeof dict[key] === "string";
    // Keep the node's leading/trailing whitespace (it separates inline
    // siblings) but drop the source's internal line breaks — a multi-line
    // paragraph in the HTML is one text node and must match its collapsed key.
    var next = has
      ? src.match(/^\s*/)[0] + dict[key] + src.match(/\s*$/)[0]
      : src;
    if (next !== cur) node.nodeValue = next;
    node.__i18nSrc = src;
    node.__i18nOut = next;
  }
  function translateAttrs(el) {
    for (var i = 0; i < ATTRS.length; i++) {
      var a = ATTRS[i];
      if (!el.hasAttribute(a)) continue;
      var cur = el.getAttribute(a);
      var orig = el.getAttribute("data-i18n-orig-" + a);
      if (orig == null || el.getAttribute("data-i18n-out-" + a) !== cur) { orig = cur; el.setAttribute("data-i18n-orig-" + a, orig); }
      var next = t(orig);
      if (next !== cur) el.setAttribute(a, next);
      el.setAttribute("data-i18n-out-" + a, next);
    }
  }
  function walk(root) {
    if (!root) return;
    if (root.nodeType === 3) { if (!skip(root.parentNode)) translateText(root); return; }
    if (root.nodeType !== 1 && root.nodeType !== 11) return;
    if (root.nodeType === 1) {
      if (skip(root)) return;
      translateAttrs(root);
    }
    var tw = document.createTreeWalker(root, NodeFilter.SHOW_ELEMENT | NodeFilter.SHOW_TEXT, null);
    var n;
    while ((n = tw.nextNode())) {
      if (n.nodeType === 1) { if (!skip(n)) translateAttrs(n); }
      else if (!skip(n.parentNode)) translateText(n);
    }
  }
  function applyAll() {
    applying = true;
    try {
      walk(document.body);
      if (document.title) {
        if (!document.__i18nTitle) document.__i18nTitle = document.title;
        document.title = t(document.__i18nTitle);
      }
      document.documentElement.setAttribute("lang", lang);
    } finally { applying = false; }
  }

  // Keep script-built content translated. Mutations we cause ourselves are
  // ignored (applying flag); everything else is walked as it lands.
  var observer = null;
  function observe() {
    if (observer || !window.MutationObserver) return;
    observer = new MutationObserver(function (records) {
      if (applying || !dict) return;
      applying = true;
      try {
        for (var i = 0; i < records.length; i++) {
          var r = records[i];
          if (r.type === "characterData") { if (!skip(r.target.parentNode)) translateText(r.target); }
          else if (r.type === "attributes") { if (r.target.nodeType === 1 && !skip(r.target)) translateAttrs(r.target); }
          else for (var j = 0; j < r.addedNodes.length; j++) walk(r.addedNodes[j]);
        }
      } finally { applying = false; }
    });
    observer.observe(document.documentElement, {
      childList: true, subtree: true, characterData: true,
      attributes: true, attributeFilter: ATTRS,
    });
  }

  // ---------- switching ----------
  function setLang(code) {
    code = normalise(code) || "en";
    lang = code;
    save(code);
    return load(code).then(function (d) {
      if (lang !== code) return;
      dict = code === "en" ? null : d;
      applyAll();
      if (!dict) { document.documentElement.setAttribute("lang", "en"); }
      refreshPicker();
    }).catch(function () {
      // Dictionary unreachable → stay on English rather than half-translate.
      dict = null; lang = "en"; applyAll(); refreshPicker();
    });
  }

  // ---------- the dropdown ----------
  // A custom menu rather than a <select>: a native select cannot show
  // flags, and emoji flags render as bare letters on Windows. Flags are
  // tiny inline SVGs (3:2, simplified) so no third-party image request
  // ever leaves the visitor's browser. Sits on the right of the top nav,
  // just before the wallet button.
  var FLAGS = {
    en: '<rect width="60" height="40" fill="#012169"/><path d="M0 0L60 40M60 0L0 40" stroke="#fff" stroke-width="8"/><path d="M0 0L60 40M60 0L0 40" stroke="#C8102E" stroke-width="3"/><path d="M30 0V40M0 20H60" stroke="#fff" stroke-width="10"/><path d="M30 0V40M0 20H60" stroke="#C8102E" stroke-width="6"/>',
    de: '<rect width="60" height="40" fill="#000"/><rect y="13.33" width="60" height="13.34" fill="#D00"/><rect y="26.67" width="60" height="13.33" fill="#FFCE00"/>',
    el: '<rect width="60" height="40" fill="#0D5EAF"/><rect y="4.44" width="60" height="4.45" fill="#fff"/><rect y="13.33" width="60" height="4.45" fill="#fff"/><rect y="22.22" width="60" height="4.45" fill="#fff"/><rect y="31.11" width="60" height="4.45" fill="#fff"/><rect width="22.22" height="22.22" fill="#0D5EAF"/><rect x="8.89" width="4.44" height="22.22" fill="#fff"/><rect y="8.89" width="22.22" height="4.44" fill="#fff"/>',
    ru: '<rect width="60" height="40" fill="#fff"/><rect y="13.33" width="60" height="13.34" fill="#0039A6"/><rect y="26.67" width="60" height="13.33" fill="#D52B1E"/>',
    es: '<rect width="60" height="40" fill="#AA151B"/><rect y="10" width="60" height="20" fill="#F1BF00"/>',
    fr: '<rect width="20" height="40" fill="#0055A4"/><rect x="20" width="20" height="40" fill="#fff"/><rect x="40" width="20" height="40" fill="#EF4135"/>',
    pt: '<rect width="60" height="40" fill="#F00"/><rect width="24" height="40" fill="#060"/><circle cx="24" cy="20" r="7" fill="#FFE000"/><circle cx="24" cy="20" r="3.5" fill="#F00"/>',
  };
  var GLOBE = '<svg class="lp-globe" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="1.8" aria-hidden="true"><circle cx="12" cy="12" r="9"/><path d="M3 12h18M12 3c3 3.5 3 14.5 0 18M12 3c-3 3.5-3 14.5 0 18"/></svg>';
  var CARET = '<svg class="lp-caret" viewBox="0 0 10 6" aria-hidden="true"><path d="M1 1l4 4 4-4" fill="none" stroke="currentColor" stroke-width="1.6"/></svg>';
  function flagSvg(code) {
    return '<svg class="lp-flag" viewBox="0 0 60 40" aria-hidden="true">' + (FLAGS[code] || "") + "</svg>";
  }

  var picker = null, pickerBtn = null, pickerMenu = null;
  function closePicker() {
    if (!picker) return;
    picker.classList.remove("open");
    pickerBtn.setAttribute("aria-expanded", "false");
  }
  function openPicker() {
    if (!picker) return;
    picker.classList.add("open");
    pickerBtn.setAttribute("aria-expanded", "true");
    var active = pickerMenu.querySelector('[aria-selected="true"]');
    if (active) active.focus();
  }
  function paintPicker() {
    if (picker) return;
    var css = document.createElement("style");
    css.textContent =
      ".lang-picker{position:relative;margin-left:auto;font-family:var(--sans,inherit)}" +
      ".topnav .lang-picker + .profile-wrap,.topnav .lang-picker + a.portal{margin-left:8px}" +
      ".lp-btn{display:inline-flex;align-items:center;gap:7px;padding:5px 10px 5px 9px;border-radius:999px;" +
      "background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.1);color:var(--mut,#b8c2d4);" +
      "font:inherit;font-size:12.5px;line-height:1;cursor:pointer;transition:border-color .12s,color .12s,background .12s}" +
      ".lp-btn:hover,.lang-picker.open .lp-btn{color:var(--ink,#f1f4fa);border-color:rgba(214,255,61,.35);background:rgba(214,255,61,.08)}" +
      ".lp-globe{width:15px;height:15px;opacity:.85;flex:none}" +
      ".lp-flag{width:20px;height:14px;border-radius:2px;box-shadow:0 0 0 1px rgba(255,255,255,.14);flex:none}" +
      ".lp-caret{width:9px;height:9px;opacity:.7;transition:transform .15s;flex:none}" +
      ".lang-picker.open .lp-caret{transform:rotate(180deg)}" +
      ".lp-menu{position:absolute;right:0;top:calc(100% + 8px);min-width:200px;padding:6px;border-radius:12px;" +
      "background:var(--panel,#141a24);border:1px solid rgba(255,255,255,.1);box-shadow:0 12px 32px rgba(0,0,0,.45);z-index:200;display:none}" +
      ".lang-picker.open .lp-menu{display:block}" +
      ".lp-opt{display:flex;align-items:center;gap:10px;width:100%;padding:8px 10px;border:0;border-radius:8px;" +
      "background:transparent;color:var(--mut,#b8c2d4);font:inherit;font-size:13.5px;text-align:left;cursor:pointer}" +
      ".lp-opt:hover,.lp-opt:focus-visible{background:rgba(255,255,255,.06);color:var(--ink,#f1f4fa);outline:none}" +
      '.lp-opt[aria-selected="true"]{color:var(--acid,#d6ff3d);background:rgba(214,255,61,.08)}' +
      ".lp-opt .lp-code{margin-left:auto;font-family:var(--mono,monospace);font-size:10.5px;letter-spacing:.08em;text-transform:uppercase;opacity:.55}" +
      ".lang-picker-float{position:fixed;bottom:20px;right:20px;z-index:99}" +
      ".lang-picker-inline{margin-left:0}" +
      "@media (max-width:560px){.lp-name{display:none}}";
    document.head.appendChild(css);

    picker = document.createElement("div");
    picker.className = "lang-picker";
    picker.setAttribute("translate", "no");
    pickerBtn = document.createElement("button");
    pickerBtn.type = "button";
    pickerBtn.className = "lp-btn";
    pickerBtn.setAttribute("aria-haspopup", "listbox");
    pickerBtn.setAttribute("aria-expanded", "false");
    pickerBtn.setAttribute("aria-label", "Language");
    pickerBtn.title = "Language";
    pickerMenu = document.createElement("div");
    pickerMenu.className = "lp-menu";
    pickerMenu.setAttribute("role", "listbox");
    pickerMenu.setAttribute("aria-label", "Language");
    var html = "";
    for (var code in LANGS) {
      html += '<button type="button" class="lp-opt" role="option" data-lang="' + code + '" aria-selected="false" tabindex="-1">' +
        flagSvg(code) + "<span>" + LANGS[code] + '</span><span class="lp-code">' + code + "</span></button>";
    }
    pickerMenu.innerHTML = html;
    picker.appendChild(pickerBtn);
    picker.appendChild(pickerMenu);

    pickerBtn.addEventListener("click", function (e) {
      e.stopPropagation();
      if (picker.classList.contains("open")) closePicker(); else openPicker();
    });
    pickerMenu.addEventListener("click", function (e) {
      var opt = e.target.closest ? e.target.closest("[data-lang]") : null;
      if (!opt) return;
      e.stopPropagation();
      closePicker();
      pickerBtn.focus();
      setLang(opt.getAttribute("data-lang"));
    });
    picker.addEventListener("keydown", function (e) {
      var opts = pickerMenu.querySelectorAll("[data-lang]");
      var i = Array.prototype.indexOf.call(opts, document.activeElement);
      if (e.key === "Escape") { closePicker(); pickerBtn.focus(); }
      else if (e.key === "ArrowDown") { e.preventDefault(); if (!picker.classList.contains("open")) openPicker(); else opts[Math.min(i + 1, opts.length - 1)].focus(); }
      else if (e.key === "ArrowUp") { e.preventDefault(); if (i > 0) opts[i - 1].focus(); }
    });
    document.addEventListener("click", closePicker);

    var slot = document.querySelector("[data-lang-slot]");
    var nav = document.querySelector(".topnav");
    if (slot) { slot.replaceWith(picker); picker.classList.add("lang-picker-inline"); } else
    if (nav) {
      // Right side: directly before the wallet button (profile-wrap once
      // profile-menu.js has wrapped the portal link, the bare link before
      // that), after everything else.
      // Order on the right: language · Dashboard (when signed in) · wallet.
      var wallet = nav.querySelector(".dash-link") || nav.querySelector(".profile-wrap") || nav.querySelector("a.portal");
      if (wallet) nav.insertBefore(picker, wallet); else nav.appendChild(picker);
    } else {
      picker.classList.add("lang-picker-float");
      document.body.appendChild(picker);
    }
    refreshPicker();
  }
  function refreshPicker() {
    if (!picker) return;
    pickerBtn.innerHTML = GLOBE + flagSvg(lang) + '<span class="lp-name">' + (LANGS[lang] || lang) + "</span>" + CARET;
    var opts = pickerMenu.querySelectorAll("[data-lang]");
    for (var i = 0; i < opts.length; i++) {
      opts[i].setAttribute("aria-selected", opts[i].getAttribute("data-lang") === lang ? "true" : "false");
    }
  }

  // ---------- boot ----------
  lang = detect();
  var ready = lang === "en" ? Promise.resolve(null) : load(lang).then(function (d) { dict = d; return d; }).catch(function () { lang = "en"; return null; });
  function boot() {
    observe();
    ready.then(function () { applyAll(); });
  }
  if (document.readyState === "loading") document.addEventListener("DOMContentLoaded", boot);
  else boot();
  // The picker is painted on `load`, after the deferred nav scripts
  // (theme.js font pill, profile-menu.js wallet button) have laid out the
  // top nav, so it lands in a stable spot on the right.
  if (document.readyState === "complete") paintPicker();
  else window.addEventListener("load", paintPicker);

  window.siriusI18n = {
    get lang() { return lang; },
    langs: LANGS,
    t: t,
    setLang: setLang,
    apply: function (root) { if (dict) { applying = true; try { walk(root || document.body); } finally { applying = false; } } },
  };
})();