From 569f0537570a495450a427f92e5c70de6953ef4d Mon Sep 17 00:00:00 2001
From: seb <sebgreenbus@gmail.com>
Date: Thu, 3 Jul 2025 07:00:13 +0200
Subject: [PATCH] Enhance product rendering by incorporating category
 information into JSON-LD generation and parallel rendering functions,
 improving SEO structure and breadcrumb support.

---
 prerender.cjs     | 23 ++++++++++++++++++-----
 prerender/seo.cjs | 29 ++++++++++++++++++++++++++++-
 2 files changed, 46 insertions(+), 6 deletions(-)

diff --git a/prerender.cjs b/prerender.cjs
index eb1e7ed..52b6407 100644
--- a/prerender.cjs
+++ b/prerender.cjs
@@ -75,7 +75,7 @@ const AGB = require("./src/pages/AGB.js").default;
 const NotFound404 = require("./src/pages/NotFound404.js").default;
 
 // Worker function for parallel product rendering  
-const renderProductWorker = async (productSeoNames, workerId, progressCallback) => {
+const renderProductWorker = async (productSeoNames, workerId, progressCallback, categoryMap = {}) => {
   const socketUrl = "http://127.0.0.1:9303";
   const workerSocket = io(socketUrl, {
     path: "/socket.io/",
@@ -114,10 +114,13 @@ const renderProductWorker = async (productSeoNames, workerId, progressCallback)
           ...productDetails.product,
           seoName: actualSeoName,
         }, shopConfig.baseUrl, shopConfig);
+        // Get category info from categoryMap if available
+        const categoryInfo = productDetails.product.categoryId ? categoryMap[productDetails.product.categoryId] : null;
+        
         const jsonLdScript = generateProductJsonLd({
           ...productDetails.product,
           seoName: actualSeoName,
-        }, shopConfig.baseUrl, shopConfig);
+        }, shopConfig.baseUrl, shopConfig, categoryInfo);
         const combinedMetaTags = metaTags + "\n" + jsonLdScript;
 
         const success = renderPage(
@@ -183,7 +186,7 @@ const renderProductWorker = async (productSeoNames, workerId, progressCallback)
 };
 
 // Function to render products in parallel
-const renderProductsInParallel = async (allProductsArray, maxWorkers, totalProducts) => {
+const renderProductsInParallel = async (allProductsArray, maxWorkers, totalProducts, categoryMap = {}) => {
   // Shared progress tracking
   let completedProducts = 0;
   let totalSuccessCount = 0;
@@ -245,7 +248,7 @@ const renderProductsInParallel = async (allProductsArray, maxWorkers, totalProdu
         
         // Update progress bar with worker stats
         updateProgressBar(completedProducts, totalProducts, lastProductName);
-      });
+      }, categoryMap);
       
       workerPromises.push(promise);
     }
@@ -534,6 +537,15 @@ const renderApp = async (categoryData, socket) => {
       const numCPUs = os.cpus().length;
       const maxWorkers = Math.min(numCPUs, totalProducts, 8); // Cap at 8 workers to avoid overwhelming the server
       
+      // Create category map for breadcrumbs
+      const categoryMap = {};
+      allCategories.forEach(category => {
+        categoryMap[category.id] = {
+          name: category.name,
+          seoName: category.seoName
+        };
+      });
+      
       console.log(
         `\n📦 Rendering ${totalProducts} individual product pages using ${maxWorkers} parallel workers...`
       );
@@ -541,7 +553,8 @@ const renderApp = async (categoryData, socket) => {
       const productPagesRendered = await renderProductsInParallel(
         Array.from(allProducts),
         maxWorkers,
-        totalProducts
+        totalProducts,
+        categoryMap
       );
 
       console.log(
diff --git a/prerender/seo.cjs b/prerender/seo.cjs
index 5637d30..476fdf9 100644
--- a/prerender/seo.cjs
+++ b/prerender/seo.cjs
@@ -50,7 +50,7 @@ const generateProductMetaTags = (product, baseUrl, config) => {
   `;
 };
 
-const generateProductJsonLd = (product, baseUrl, config) => {
+const generateProductJsonLd = (product, baseUrl, config, categoryInfo = null) => {
   const productUrl = `${baseUrl}/Artikel/${product.seoName}`;
   const imageUrl =
     product.pictureList && product.pictureList.trim()
@@ -97,6 +97,33 @@ const generateProductJsonLd = (product, baseUrl, config) => {
     },
   };
 
+  // Add breadcrumb if category information is available
+  if (categoryInfo && categoryInfo.name && categoryInfo.seoName) {
+    jsonLd.breadcrumb = {
+      "@type": "BreadcrumbList",
+      itemListElement: [
+        {
+          "@type": "ListItem",
+          position: 1,
+          name: "Home",
+          item: baseUrl,
+        },
+        {
+          "@type": "ListItem",
+          position: 2,
+          name: categoryInfo.name,
+          item: `${baseUrl}/Kategorie/${categoryInfo.seoName}`,
+        },
+        {
+          "@type": "ListItem",
+          position: 3,
+          name: product.name,
+          item: productUrl,
+        },
+      ],
+    };
+  }
+
   return `<script type="application/ld+json">${JSON.stringify(
     jsonLd
   )}</script>`;