/* AGS 92 B2B – DPH náplasť (iba zobrazenie, nič neposiela na server).
 * CZ/HU/PL/COM (reverse charge): skrýva sumy "s DPH", stĺpec DPH → 0 %, veta o reverse charge,
 *   riadok "Poštovné a balné" (netto z hlavičky − Základ), oprava AJAX prepočtu "Celková cena bez DPH".
 * SK (DPH sa účtuje): Základ → Poštovné a balné → Celková bez DPH → DPH 23 % (aj z dopravy) → Celková s DPH;
 *   rovnako v súhrne objednávky. Hodnoty z mini košíka v hlavičke (jediné miesto, ktoré web drží správne).
 * v2 (30. 9. 2026): SK stĺpec DPH "23.0000" → "23".
 * v3 (30. 9. 2026): základ = súčet položiek košíka (Počet × Cena MJ), nie riadok "Základ/Podstawa" zo servera –
 *   server pri niektorých položkách základ nezapočíta (PL: 34-423) a riadok dopravy potom ukázal nezmysel
 *   (200,52 zł namiesto 50 zł). Riadok "Základ" sa opraví na súčet položiek.
 * v4–v5 (30. 9. 2026): základ zo stĺpca "Cena celkom" riadkov (presné, bez zaokrúhlenia ceny MJ); po AJAX prepočte
 *   web do tohto stĺpca dá sumu s DPH (×1,23) – rozpozná sa a prepíše na netto (PL: 1 × 8,00 = "9,84").
 *   Poštovné sa zaokrúhli na sumu z vety pod košíkom ("…w wysokości 50 PLN"), ak sa líši len o centy.
 * Vypnutie: odstrániť include z pätičky (Container 22, property[15]).
 */
(function () {
  'use strict';
  var lang = (location.pathname.split('/')[1] || '').toLowerCase();
  if (!/^(sk|cz|hu|pl|com)$/.test(lang)) return; /* admin a iné: nič */
  var SK = lang === 'sk'; /* SK: DPH sa účtuje – iba doplniť dopravu, DPH z dopravy a súčet s DPH */
  if (window.__agsDphLoaded) return;
  window.__agsDphLoaded = true;

  var NOTES = {
    cz: 'Ceny jsou uvedeny bez DPH. DPH se neúčtuje – přenesení daňové povinnosti (reverse charge).',
    hu: 'Az árak ÁFA nélkül értendők. ÁFA nem kerül felszámításra – fordított adózás (reverse charge).',
    pl: 'Ceny netto. VAT nie jest naliczany – odwrotne obciążenie (reverse charge).',
    en: 'Prices are net. VAT is not charged – reverse charge.'
  };
  var NET_LABEL = { cz: 'bez DPH', hu: 'ÁFA nélkül', pl: 'netto', en: 'excl. VAT' };
  var SHIP_LABEL = { sk: 'Poštovné a balné', cz: 'Poštovné a balné', hu: 'Szállítási és csomagolási díj', pl: 'Koszt dostawy i pakowania', en: 'Shipping & handling' };
  var SK_L = { net: 'Celková cena bez DPH', vat: 'DPH 23 %', gross: 'Celková cena s DPH', sumNet: 'Celková suma bez DPH', sumGross: 'Celková suma s DPH' };
  var NOTE = NOTES[lang] || NOTES.en;
  var NETL = NET_LABEL[lang] || NET_LABEL.en;
  var SHIPL = SHIP_LABEL[lang] || SHIP_LABEL.en;

  /* "1 325 620 Kč" / "69.97 zł" / "7 945 Ft" → číslo; null ak nič */
  function num(s) {
    s = (s || '').replace(/[^\d.,-]/g, '');
    if (!s) return null;
    if (s.indexOf(',') > -1 && s.indexOf('.') > -1) s = s.replace(/\./g, '').replace(',', '.');
    else s = s.replace(',', '.');
    var n = parseFloat(s);
    return isNaN(n) ? null : n;
  }
  function fmtLike(sample, n) {
    /* zachová menu a formát z ukážky ("539 Kč" → "150 Kč", "69.97 zł" → "45.00 zł") */
    var dec = /[.,]\d{2}\s*\D*$/.test(sample) ? 2 : 0;
    var s = n.toFixed(dec).replace('.', /,\d{2}\s*\D*$/.test(sample) ? ',' : '.');
    s = s.replace(/\B(?=(\d{3})+(?!\d))/g, ' ');
    var cur = (sample.match(/[^\d.,\s]+\s*$/) || [''])[0].trim();
    return cur ? s + ' ' + cur : s;
  }
  var VAT_HDR = /^(DPH|ÁFA|VAT|Sazba DPH|Sadzba DPH|ÁFA kulcs|Stawka VAT|VAT rate)\s*(%|\(%\))?$/i;

  function txt(e) { return (e && e.textContent || '').replace(/\s+/g, ' ').trim(); }

  function makeNote(cls) {
    var d = document.createElement('div');
    d.className = 'ags-vat-note ' + (cls || '');
    d.setAttribute('style', 'margin:10px 0;padding:8px 12px;border-left:3px solid #4a7bd0;background:#eef3fc;color:#1f3b6e;font-size:13px;line-height:1.4;');
    d.textContent = NOTE;
    return d;
  }
  function addNoteAfter(el, key) {
    if (!el || !el.parentNode) return;
    if (el.parentNode.querySelector('.ags-vat-note.' + key)) return;
    el.parentNode.insertBefore(makeNote(key), el.nextSibling);
  }

  /* 1. Mini košík v hlavičke (aj po AJAX prepísaní) */
  function miniCart() {
    if (SK) return;
    var boxes = document.querySelectorAll('#mini-cart, .shopping-cart-small, .eshop-small-cart');
    for (var i = 0; i < boxes.length; i++) {
      var box = boxes[i];
      var gross = box.querySelector('.total-price-formated');
      var net = box.querySelector('.total-price-no-vat-formated');
      if (!gross || !net) continue;
      var nv = txt(net);
      if (nv && txt(gross) !== nv) gross.textContent = nv;
      if (!gross.nextSibling || !gross.nextSibling.classList || !gross.nextSibling.classList.contains('ags-vat-net')) {
        var lbl = document.createElement('small');
        lbl.className = 'ags-vat-net';
        lbl.textContent = ' ' + NETL;
        gross.parentNode.insertBefore(lbl, gross.nextSibling);
      }
      /* schovať duplicitný riadok "539 Kč bez DPH" pod tým */
      var small = net.closest('small');
      if (small && !small.classList.contains('ags-vat-done')) {
        small.classList.add('ags-vat-done');
        var n = small.firstChild;
        while (n) {
          var next = n.nextSibling;
          if (n.nodeType === 1 && n.tagName === 'BR') { n.parentNode.removeChild(n); break; }
          if (n.nodeType === 3) n.textContent = '';
          else if (n.nodeType === 1) n.style.display = 'none';
          n = next;
        }
      }
    }
  }

  /* 2. Košík: stĺpec DPH → 0 %, riadok "DPH 23%" v súhrne preč, poznámka */
  /* SK: stĺpec DPH zjednotiť – ui42 pri niektorých produktoch vypíše "23.0000" namiesto "23" (v2, 30. 9. 2026) */
  function skVatCol() {
    var tables = document.querySelectorAll('table');
    for (var t = 0; t < tables.length; t++) {
      var ths = tables[t].querySelectorAll('thead th'), idx = -1;
      for (var h = 0; h < ths.length; h++) if (VAT_HDR.test(txt(ths[h]))) { idx = h; break; }
      if (idx < 0) continue;
      var rows = tables[t].querySelectorAll('tbody tr');
      for (var r = 0; r < rows.length; r++) {
        var td = rows[r].children[idx];
        if (!td || td.tagName !== 'TD' || td.children.length) continue;
        var v = txt(td), m = v.match(/^(\d+)[.,](\d*?)0+(\s*%?)$/);
        if (m) td.textContent = (m[2] ? m[1] + ',' + m[2] : m[1]) + m[3];
      }
    }
  }
  function cartPage() {
    if (SK) { skVatCol(); var sk = document.querySelectorAll('table.summary'); for (var q = 0; q < sk.length; q++) skCart(sk[q]); return; }
    var tables = document.querySelectorAll('table.basket_table');
    for (var t = 0; t < tables.length; t++) {
      var tbl = tables[t];
      var ths = tbl.querySelectorAll('thead th');
      var idx = -1;
      for (var h = 0; h < ths.length; h++) if (VAT_HDR.test(txt(ths[h]))) { idx = h; break; }
      if (idx < 0) continue;
      var rows = tbl.querySelectorAll('tbody tr');
      for (var r = 0; r < rows.length; r++) {
        var cells = rows[r].children;
        var td = cells[idx];
        if (td && td.tagName === 'TD' && /^\d+([.,]\d+)?\s*%?$/.test(txt(td)) && txt(td) !== '0 %') { td.textContent = '0 %'; td.style.whiteSpace = 'nowrap'; }
      }
    }
    var sums = document.querySelectorAll('table.summary');
    for (var s = 0; s < sums.length; s++) {
      var trs = sums[s].querySelectorAll('tfoot tr, tbody tr');
      for (var k = 0; k < trs.length; k++) {
        var tr = trs[k];
        if (tr.style.display === 'none') continue;
        var hasVat = false;
        var tds = tr.querySelectorAll('td');
        for (var c = 0; c < tds.length; c++) {
          var cl = ' ' + (tds[c].className || '') + ' ';
          if (/ vat-\d+-formated /.test(cl)) hasVat = true;
        }
        if (hasVat) tr.style.display = 'none';
      }
      shipRow(sums[s]);
      addNoteAfter(sums[s], 'ags-note-cart');
    }
  }

  /* Riadok "Poštovné a balné" = Celková cena − Základ (server dopravu nevypisuje, len ju pripočíta) */
  /* Zdroj pravdy je netto z mini košíka v hlavičke (netto + doprava; po AJAX prepočte ho web
   * udržiava správne, kým bunka "Celková cena bez DPH" v košíku po AJAXe dostane sumu s DPH). */
  function headerNet() {
    var el = document.querySelector('#mini-cart .total-price-no-vat-formated, .eshop-small-cart .total-price-no-vat-formated');
    return el ? num(txt(el)) : null;
  }
  /* základ = súčet položiek košíka. Zdroj: stĺpec "Cena celkom" riadku (presný), kontrola cez Počet × Cena MJ;
   * ak riadok po AJAX prepočte nesie sumu s DPH (≈ ×1,23), prepočíta sa na netto a bunka sa opraví. null = neistota */
  function itemsBase() {
    var inps = document.querySelectorAll('input.product-amount'), sum = 0, rows = 0;
    for (var i = 0; i < inps.length; i++) {
      var tr = inps[i].closest('tr'); if (!tr) continue;
      var td = inps[i].closest('td'), cells = tr.children, ci = [].indexOf.call(cells, td), unit = null, last = null, lastTd = null;
      for (var j = ci + 1; j < cells.length; j++) {
        var t = txt(cells[j]); if (!/\d/.test(t) || /%/.test(t) || cells[j].querySelector('a,button,input')) continue;
        var v = num(t); if (v === null) continue;
        if (unit === null) unit = v; else { last = v; lastTd = cells[j]; }
      }
      var amt = num(inps[i].value);
      if (unit === null || amt === null) return null;
      var exp = amt * unit, val = exp, tol = Math.max(0.02, exp * 0.006);
      if (last !== null) {
        if (Math.abs(last - exp) <= tol) val = last;                                   /* netto zo servera (presné) */
        else if (Math.abs(last / 1.23 - exp) <= tol) { val = Math.round(last / 1.23 * 100) / 100; if (lastTd) lastTd.textContent = fmtLike(txt(lastTd), val); } /* AJAX dal sumu s DPH */
      }
      sum += val; rows++;
    }
    return rows ? Math.round(sum * 100) / 100 : null;
  }
  /* poštovné z vety pod košíkom („Pri objednávke do X … vo výške Y“) – 2. suma; null ak veta chýba */
  function knownShip() {
    var els = document.querySelectorAll('body *');
    for (var i = 0; i < els.length; i++) {
      var e = els[i]; if (e.children.length || e.closest('#ags-up')) continue;
      var t = txt(e); if (!/(objednávke do|objednávce|megrendelés esetén|zamówień|orders)/i.test(t)) continue;
      var re = /(\d[\d\s\u00a0]*(?:[.,]\d+)?)\s*(?:,-)?\s*(€|Kč|Ft|zł|PLN|EUR|CZK|HUF)/gi, m, v = [];
      while ((m = re.exec(t))) v.push(num(m[1]));
      return v.length > 1 && v[1] > 0 ? v[1] : null;
    }
    return null;
  }
  /* doprava = netto z hlavičky − základ; pri rozdiele do 5 centov oproti vete pod košíkom sa použije suma z vety */
  function shipOf(hn, base) {
    var d = Math.round((hn - base) * 100) / 100, k = knownShip();
    return (k !== null && Math.abs(d - k) <= 0.05) ? k : d;
  }
  function fixBase(baseTd, base, tol) {
    var cur = num(txt(baseTd));
    if (cur !== null && Math.abs(cur - base) >= tol) baseTd.textContent = fmtLike(txt(baseTd), base);
  }
  function headerGross() { /* len SK – na ostatných trhoch je bunka prepísaná na netto */
    var el = document.querySelector('#mini-cart .total-price-formated, .eshop-small-cart .total-price-formated');
    return el ? num(txt(el)) : null;
  }
  function setRow(tbl, cls, refTr, label, val, before) {
    var row = tbl.querySelector('tr.' + cls);
    if (!row) {
      row = refTr.cloneNode(true);
      row.className = cls;
      var ct = row.querySelectorAll('td'); for (var ci = 0; ci < ct.length; ci++) if (/formated/.test(ct[ci].className)) ct[ci].className = 'price';
      if (before) refTr.parentNode.insertBefore(row, refTr); else refTr.parentNode.insertBefore(row, refTr.nextSibling);
    }
    var tds = row.querySelectorAll('td');
    if (tds.length < 2) return row;
    var valTd = row.querySelector('td.price') || tds[tds.length - 1];
    if (txt(tds[0]) !== label) tds[0].textContent = label;
    for (var vi = 1; vi < tds.length; vi++) if (tds[vi] !== valTd && txt(tds[vi])) tds[vi].textContent = '';
    if (txt(valTd) !== val) valTd.textContent = val;
    return row;
  }
  function shipRow(tbl) {
    var baseTd = tbl.querySelector('td[class*="total-price-no-vat-"]');
    var totTd = tbl.querySelector('td.total-price-formated');
    if (!baseTd || !totTd) return;
    var baseTr = baseTd.parentNode, totTr = totTd.parentNode;
    var ib = itemsBase(), base = ib !== null ? ib : num(txt(baseTd)), hn = headerNet();
    var old = tbl.querySelector('tr.ags-ship-row');
    if (base === null || hn === null || hn < base - 0.004) { if (old) old.parentNode.removeChild(old); return; }
    var shp = shipOf(hn, base); if (ib !== null) { base = Math.round((hn - shp) * 100) / 100; fixBase(baseTd, base, 0.005); }
    /* bunka "Celková cena bez DPH" = netto z hlavičky (oprava AJAX prepočtu so sumou s DPH) */
    var totNow = num(txt(totTd));
    if (totNow !== null && Math.abs(totNow - hn) >= 0.5) totTd.textContent = fmtLike(txt(totTd), hn);
    if (shp < 0.5) { if (old) old.parentNode.removeChild(old); return; }
    var val = fmtLike(txt(totTd), shp);
    if (old) { var c = old.querySelectorAll('td'); if (c[1] && txt(c[1]) !== val) c[1].textContent = val; return; }
    var row = baseTr.cloneNode(true);
    row.className = 'ags-ship-row';
    var tds = row.querySelectorAll('td');
    if (tds.length < 2) return;
    tds[0].textContent = SHIPL;
    tds[1].textContent = val;
    tds[1].className = 'price';
    totTr.parentNode.insertBefore(row, totTr);
  }

  /* SK košík: Základ → Poštovné → Celková bez DPH → DPH (aj z dopravy) → Celková s DPH */
  function skCart(tbl) {
    var baseTd = tbl.querySelector('td[class*="total-price-no-vat-"]');
    var vatTd = tbl.querySelector('td[class^="vat-"], td[class*=" vat-"]');
    var totTd = tbl.querySelector('td.total-price-formated');
    if (!baseTd || !totTd) return;
    var ib = itemsBase(), base = ib !== null ? ib : num(txt(baseTd)), hn = headerNet(), hg = headerGross();
    if (base === null || hn === null || hg === null || hn < base - 0.004 || hg < hn) return;
    var shp = shipOf(hn, base); if (ib !== null) { base = Math.round((hn - shp) * 100) / 100; fixBase(baseTd, base, 0.005); }
    var totTr = totTd.parentNode, baseTr = baseTd.parentNode;
    var fmt = txt(totTd);
    /* Celková bez DPH = netto z hlavičky (oprava AJAX prepočtu) */
    var totNow = num(fmt);
    if (totNow !== null && Math.abs(totNow - hn) >= 0.5 / 100) totTd.textContent = fmtLike(fmt, hn);
    var lbl = totTr.querySelector('td');
    if (lbl && txt(lbl) !== SK_L.net) lbl.textContent = SK_L.net;
    /* Poštovné */
    if (shp >= 0.005) setRow(tbl, 'ags-ship-row', baseTr, SHIPL, fmtLike(fmt, shp), false);
    else { var o = tbl.querySelector('tr.ags-ship-row'); if (o) o.parentNode.removeChild(o); }
    /* DPH z celku (tovar + doprava) – presunúť za "bez DPH" */
    if (vatTd) {
      var vatTr = vatTd.parentNode;
      var v = fmtLike(fmt, hg - hn);
      if (txt(vatTd) !== v) vatTd.textContent = v;
      var vl = vatTr.querySelector('td'); if (vl && txt(vl) !== SK_L.vat) vl.textContent = SK_L.vat;
      if (vatTr.previousElementSibling !== totTr) totTr.parentNode.insertBefore(vatTr, totTr.nextSibling);
    }
    /* Celková s DPH */
    var after = vatTd ? vatTd.parentNode : totTr;
    var g = tbl.querySelector('tr.ags-gross-row');
    if (!g) { g = totTr.cloneNode(true); g.className = 'total-price-row ags-gross-row'; var gc = g.querySelectorAll('td'); for (var gi = 0; gi < gc.length; gi++) if (/formated/.test(gc[gi].className)) gc[gi].className = 'price'; after.parentNode.insertBefore(g, after.nextSibling); }
    var gt = g.querySelectorAll('td');
    var gvTd = g.querySelector('td.price') || gt[gt.length - 1];
    if (txt(gt[0]) !== SK_L.gross) gt[0].textContent = SK_L.gross;
    var gv = fmtLike(fmt, hg); if (txt(gvTd) !== gv) gvTd.textContent = gv;
  }

  /* 3. Dodacie údaje: "663 Kč s DPH" preč */
  function deliveryPage() {
    if (SK) return;
    var g = document.querySelectorAll('.bt-cart-total-total-price.total-price-formated');
    for (var i = 0; i < g.length; i++) {
      g[i].style.display = 'none';
      var net = g[i].parentNode && g[i].parentNode.querySelector('.total-price-no-vat-formated');
      if (net) addNoteAfter(net, 'ags-note-delivery');
    }
  }

  /* 4. Súhrn objednávky: poznámka nad tlačidlom OBJEDNAŤ */
  function summaryPage() {
    var f = document.querySelector('input[name="b2_b_summary_form"]');
    if (!f) return;
    var main = document.querySelector('main') || document.body;
    var tbls = main.querySelectorAll('table.table-striped');
    if (!tbls.length) tbls = main.querySelectorAll('table');
    var tbl = tbls.length ? tbls[Math.min(1, tbls.length - 1)] : null; /* 2. tabuľka = celková výška objednávky */
    if (!tbl) return;
    if (tbls.length > 1) summaryShipRow(tbls[0], tbl);
    if (SK) { if (tbls.length > 1) skSummary(tbl); return; }
    addNoteAfter(tbl, 'ags-note-summary');
  }
  /* SK súhrn: "Celková suma objednávky" → bez DPH, + DPH, + s DPH */
  function skSummary(totTbl) {
    var hn = headerNet(), hg = headerGross();
    if (hn === null || hg === null || hg < hn) return;
    var rows = totTbl.querySelectorAll('tr'), totTr = null, totTd = null;
    for (var i = 0; i < rows.length; i++) { if (/ags-/.test(rows[i].className)) continue; var tds = rows[i].querySelectorAll('td'); if (tds.length >= 2 && num(txt(tds[tds.length - 1])) !== null) { totTr = rows[i]; totTd = tds[tds.length - 1]; } }
    if (!totTr) return;
    var fmt = txt(totTd);
    var l = totTr.querySelector('td'); if (l && txt(l) !== SK_L.sumNet + ':') l.textContent = SK_L.sumNet + ':';
    if (Math.abs(num(fmt) - hn) >= 0.005) totTd.textContent = fmtLike(fmt, hn);
    var vat = setRow(totTbl, 'ags-vat-row', totTr, SK_L.vat + ':', fmtLike(fmt, hg - hn), false);
    setRow(totTbl, 'ags-gross-row', vat, SK_L.sumGross + ':', fmtLike(fmt, hg), false);
  }
  function summaryShipRow(itemsTbl, totTbl) {
    var rows = totTbl.querySelectorAll('tr');
    var totTr = null, totTd = null;
    for (var i = 0; i < rows.length; i++) { if (/ags-/.test(rows[i].className)) continue; var tds = rows[i].querySelectorAll('td'); if (tds.length >= 2 && num(txt(tds[tds.length - 1])) !== null) { totTr = rows[i]; totTd = tds[tds.length - 1]; } }
    if (!totTr) return;
    var sum = 0, cnt = 0;
    var itds = itemsTbl.querySelectorAll('tbody tr');
    for (var r = 0; r < itds.length; r++) { var c = itds[r].querySelectorAll('td'); if (!c.length) continue; var v = num(txt(c[c.length - 1])); if (v !== null) { sum += v; cnt++; } }
    var tot = num(txt(totTd));
    var old = totTbl.querySelector('tr.ags-ship-row');
    if (!cnt || tot === null || tot - sum < 0.5) { if (old) old.parentNode.removeChild(old); return; }
    var val = fmtLike(txt(totTd), tot - sum);
    if (old) { var oc = old.querySelectorAll('td'); if (txt(oc[oc.length - 1]) !== val) oc[oc.length - 1].textContent = val; return; }
    var row = totTr.cloneNode(true);
    row.className = 'ags-ship-row';
    var rt = row.querySelectorAll('td');
    rt[0].textContent = SHIPL + ':';
    rt[rt.length - 1].textContent = val;
    totTr.parentNode.insertBefore(row, totTr);
  }

  var timer = null;
  function run() {
    timer = null;
    try { miniCart(); cartPage(); deliveryPage(); summaryPage(); } catch (e) { /* fail-open */ }
  }
  function schedule() { if (!timer) timer = setTimeout(run, 60); }

  if (document.readyState === 'loading') document.addEventListener('DOMContentLoaded', run); else run();
  if (window.MutationObserver) {
    new MutationObserver(schedule).observe(document.documentElement, { childList: true, subtree: true, characterData: true });
  }
  window.addEventListener('load', run);
})();