url-product: full desc, all-table specs, correct listPrice

index.ts

@@ -253,6 +253,41 @@ function parseTrTable(html: string): Record<string, string> {
   }
   return out;
 }
+
+// Extract the full content of a <div class="..."> block, balancing nested
+// <div> tags so the slice ends at the block's real closing tag.
+function extractDivBlock(html: string, classTokens: RegExp, maxLen = 60000): string {
+  const re = new RegExp("<div[^>]*class=[\"'][^\"']*" + classTokens.source + "[^\"']*[\"'][^>]*>", "i");
+  const m0 = html.match(re);
+  if (!m0 || typeof m0.index !== "number") return "";
+  const start = m0.index;
+  let i = start + m0[0].length;
+  let depth = 1;
+  const limit = Math.min(html.length, start + maxLen);
+  const opens: number[] = [];
+  const closes: number[] = [];
+  const openRe = /<div[\s>]/g;
+  const closeRe = /<\/div\s*>/g;
+  openRe.lastIndex = i;
+  let o: RegExpExecArray | null;
+  while ((o = openRe.exec(html)) && o.index < limit) opens.push(o.index);
+  closeRe.lastIndex = i;
+  let c: RegExpExecArray | null;
+  while ((c = closeRe.exec(html)) && c.index < limit) closes.push(c.index);
+  let oi = 0, ci = 0;
+  while (oi < opens.length || ci < closes.length) {
+    const po = oi < opens.length ? opens[oi] : Infinity;
+    const pc = ci < closes.length ? closes[ci] : Infinity;
+    if (pc < po) {
+      depth--;
+      if (depth === 0) { i = pc; break; }
+      ci++;
+    } else { depth++; oi++; }
+  }
+  if (depth !== 0) i = limit;
+  return html.slice(start, i);
+}
+
 // Find the section that contains 'needle' (Vietnamese headings) and call fn with it.
 function findSection(html: string, needles: RegExp, maxLen: number): string {
   const m = html.match(needles);
@@ -1575,7 +1610,9 @@ const server = Bun.serve({
         // `<strike>` right after the current price. Parsed so the avatar's
         // add-product preview can show "Giá niêm yết — Giá KM" (priceMode both).
         {
-          const oldM = html.match(/class=["'][^"']*(?:old-price|price-old|special-price|old_price)[^"']*["'][^>]*>\s*([^<]{2,40})</i) ||
+          const oldM = html.match(/<p[^>]*class=["'][^"']*special-price[^"']*["'][^>]*>\s*[^<]*<\/p>\s*<p[^>]*class=["'][^"']*old-price[^"']*["'][^>]*>\s*([^<]{2,40})</i) ||
+                        html.match(/<p[^>]*class=["'][^"']*old-price[^"']*["'][^>]*>\s*([^<]{2,40})</i) ||
+                        html.match(/class=["'][^"']*(?:old-price|price-old|old_price)[^"']*["'][^>]*>\s*([^<]{2,40})</i) ||
                         html.match(/<strike[^>]*>\s*([^<]{2,40})<\/strike>/i);
           if (oldM) {
             const num = Number(String(oldM[1]).replace(/[^\d]/g, "")) || 0;
@@ -1614,15 +1651,15 @@ const server = Bun.serve({
         let description = "";
         const descCandidates: string[] = [];
         {
-          const art = html.match(/<div[^>]*class=["'][^"']*(?:blog-content|product-content|product-description|box-content|content-detail|description-detail|entry-content|ck-content|page-content|post-content)[^"']*["'][^>]*>([\s\S]*?)<\/div>\s*(?:<\/div>|<!--|\s*<div)/i);
+          const art = { 1: extractDivBlock(html, /(?:blog-content|product-content|product-description|box-content|content-detail|description-detail|entry-content|ck-content|block-information)/, 60000) };
           if (art && art[1]) {
-            const inner = art[1].replace(/<script[\s\S]*?<\/script>/gi, " ").replace(/<style[\s\S]*?<\/style>/gi, " ").replace(/<img[^>]*>/gi, " \n ").replace(/<br\s*\/?>/gi, "\n").replace(/<\/(p|h[1-6]|li|tr|div)>/gi, "\n").replace(/<[^>]+>/g, " ").replace(/&nbsp;/gi, " ");
+            const inner = art[1].replace(/<script[\s\S]*?<\/script>/gi, " ").replace(/<style[\s\S]*?<\/style>/gi, " ").replace(/<table[\s\S]*?<\/table>/gi, " ").replace(/<img[^>]*>/gi, " \n ").replace(/<br\s*\/?>/gi, "\n").replace(/<\/(p|h[1-6]|li|tr|div)>/gi, "\n").replace(/<[^>]+>/g, " ").replace(/&nbsp;/gi, " ");
             const t = decodeHtmlEnt(inner).replace(/[ \t]+/g, " ").replace(/\n\s*/g, "\n").replace(/\n{2,}/g, "\n").trim();
             if (t.length > 80) descCandidates.push(t);
           }
-          const main = html.match(/<div[^>]*class=["'][^"']*(?:main-content|content-wrapper|single-content)[^"']*["'][^>]*>([\s\S]*?)<\/div>\s*<\/div>/i);
+          const main = { 1: extractDivBlock(html, /(?:main-content|content-wrapper|single-content)/, 60000) };
           if (main && main[1]) {
-            const inner = main[1].replace(/<script[\s\S]*?<\/script>/gi, " ").replace(/<style[\s\S]*?<\/style>/gi, " ").replace(/<br\s*\/?>/gi, "\n").replace(/<\/(p|h[1-6]|li)>/gi, "\n").replace(/<[^>]+>/g, " ").replace(/&nbsp;/gi, " ");
+            const inner = main[1].replace(/<script[\s\S]*?<\/script>/gi, " ").replace(/<style[\s\S]*?<\/style>/gi, " ").replace(/<table[\s\S]*?<\/table>/gi, " ").replace(/<br\s*\/?>/gi, "\n").replace(/<\/(p|h[1-6]|li)>/gi, "\n").replace(/<[^>]+>/g, " ").replace(/&nbsp;/gi, " ");
             const t = decodeHtmlEnt(inner).replace(/[ \t]+/g, " ").replace(/\n\s*/g, "\n").replace(/\n{2,}/g, "\n").trim();
             if (t.length > 200) descCandidates.push(t);
           }
@@ -1641,8 +1678,27 @@ const server = Bun.serve({
         //    CMSs), then dt/dd, then label:value rows. ──
         const specs: Record<string, string> = {};
         {
-          const sec = findSection(html, /(?:Thông số kỹ thuật|Thông số|Thông tin sản phẩm|Thông tin chi tiết|Chi tiết sản phẩm|Đặc điểm nổi bật|Đặc tính|Thông số)/i, 8000);
-          if (sec) Object.assign(specs, parseTrTable(sec));
+          // Parse every <tr><td> table on the page, preferring the largest one:
+          // Vietnamese CMSs keep the spec sheet in a plain table that may sit far
+          // from any "Thông số" heading (a section heuristic can match the phrase
+          // "tính năng đa dạng" inside the description instead). Duplicate
+          // desktop/mobile tables collapse because the first label wins.
+          const tblRe = /<table[^>]*>([\s\S]*?)<\/table>/gi;
+          let tm2: RegExpExecArray | null;
+          const tables: Array<{ n: number; s: string }> = [];
+          while ((tm2 = tblRe.exec(html))) {
+            const rows = (tm2[1].match(/<tr[\s>]/gi) || []).length;
+            if (rows >= 4) tables.push({ n: rows, s: tm2[1] });
+          }
+          tables.sort((a, b) => b.n - a.n);
+          const seenLabels = new Set<string>();
+          for (const tb of tables) {
+            const parsed = parseTrTable("<table>" + tb.s + "</table>");
+            for (const k of Object.keys(parsed)) {
+              if (!seenLabels.has(k)) { seenLabels.add(k); specs[k] = parsed[k]; }
+            }
+            if (Object.keys(specs).length >= 12) break;
+          }
         }
         if (!Object.keys(specs).length) {
           const ddRe = (findSection(html, /(?:Thông số kỹ thuật|Thông số|Thông tin sản phẩm|Chi tiết sản phẩm|Đặc điểm nổi bật)/i, 6000) || html).match(/<dt[^>]*>([\s\S]*?)<\/dt>\s*<dd[^>]*>([\s\S]*?)<\/dd>/gi) || [];
@@ -1671,11 +1727,21 @@ const server = Bun.serve({
         {
           const featSec = html.match(/(?:Tính năng|Đặc điểm nổi bật|Điểm nổi bật|Ưu điểm)[\s\S]{0,4000}/i);
           if (featSec) {
-            const bullets = featSec[0].match(/<li[^>]*>([\s\S]*?)<\/li>/gi) || featSec[0].match(/<p[^>]*>([\s\S]*?)<\/p>/gi) || [];
-            for (const b of bullets.slice(0, 12)) {
+            const lis = featSec[0].match(/<li[^>]*>([\s\S]*?)<\/li>/gi) || [];
+            for (const b of lis.slice(0, 12)) {
               const t = decodeHtmlEnt(stripTags(b)).replace(/\s+/g, " ").trim();
               if (t.length > 6 && t.length < 220 && features.indexOf(t) < 0) features.push(t);
             }
+            if (!features.length) {
+              // <p> paragraphs only if they look like short feature phrases
+              // (at most 1 sentence) — multi-sentence body paragraphs are description.
+              const ps = featSec[0].match(/<p[^>]*>([\s\S]*?)<\/p>/gi) || [];
+              for (const b of ps.slice(0, 12)) {
+                const t = decodeHtmlEnt(stripTags(b)).replace(/\s+/g, " ").trim();
+                const dots = (t.match(/\./g) || []).length;
+                if (t.length > 6 && t.length <= 160 && dots <= 1 && features.indexOf(t) < 0) features.push(t);
+              }
+            }
           }
           if (!features.length && descCandidates.length) {
             const heads = descCandidates[0].split(/\n/).map((l: string) => l.trim()).filter((l: string) => l.length > 8 && l.length < 80 && !/^[\d\s\-•]+$/.test(l));