feat: enhance ProductDetailPage to support partial data loading and improve user feedback with loading descriptions

src/components/ProductDetailPage.js

@@ -21,12 +21,34 @@ class ProductDetailPage extends Component {
   constructor(props) {
     super(props);
 
-    if (
-      window.productDetailCache &&
-      window.productDetailCache[this.props.seoName]
-    ) {
-      const cachedData = window.productDetailCache[this.props.seoName];
-      
+    // First try to find cached data by seoName (complete data)
+    let cachedData = null;
+    let partialProduct = null;
+    let isUpgrading = false;
+    
+    if (window.productDetailCache && window.productDetailCache[this.props.seoName]) {
+      cachedData = window.productDetailCache[this.props.seoName];
+    } else if (window.productDetailCache) {
+      // If not found by seoName, search for partial data by checking all cached products
+      // Look for a product where the seoName matches this.props.seoName
+      for (const key in window.productDetailCache) {
+        const cached = window.productDetailCache[key];
+        if (cached && cached.seoName === this.props.seoName) {
+          partialProduct = cached;
+          isUpgrading = true;
+          break;
+        }
+        // Also check if cached is a product object directly (from category cache)
+        if (cached && typeof cached === 'object' && cached.seoName === this.props.seoName) {
+          partialProduct = cached;
+          isUpgrading = true;
+          break;
+        }
+      }
+    }
+
+    if (cachedData) {
+      // Complete cached data found
       // Clean up prerender fallback since we have cached data
       if (typeof window !== "undefined" && window.__PRERENDER_FALLBACK__) {
         delete window.__PRERENDER_FALLBACK__;
@@ -46,6 +68,7 @@ class ProductDetailPage extends Component {
       this.state = {
         product: cachedData.product,
         loading: false,
+        upgrading: false,
         error: null,
         attributeImages: {},
         attributes: cachedData.attributes || [],
@@ -62,10 +85,52 @@ class ProductDetailPage extends Component {
         showRatingForm: false,
         showAvailabilityForm: false
       };
+    } else if (partialProduct && isUpgrading) {
+      // Partial product data found - enter upgrading state
+      console.log("ProductDetailPage: Found partial product data, entering upgrading state");
+      
+      // Clean up prerender fallback since we have some data
+      if (typeof window !== "undefined" && window.__PRERENDER_FALLBACK__) {
+        delete window.__PRERENDER_FALLBACK__;
+        console.log("ProductDetailPage: Cleaned up prerender fallback using partial product data");
+      }
+      
+      // Initialize komponenten from partial product data if available
+      const komponenten = [];
+      if(partialProduct.komponenten) {
+        for(const komponent of partialProduct.komponenten.split(",")) {
+          // Handle both "x" and "×" as separators
+          const [id, count] = komponent.split(/[x×]/);
+          komponenten.push({id: id.trim(), count: count.trim()});
+        }
+      }
+      
+      this.state = {
+        product: partialProduct,
+        loading: false,
+        upgrading: true, // This indicates we have partial data and are loading complete data
+        error: null,
+        attributeImages: {},
+        attributes: [], // Will be loaded when upgrading
+        isSteckling: false,
+        imageDialogOpen: false,
+        komponenten: komponenten,
+        komponentenLoaded: komponenten.length === 0, // If no komponenten, mark as loaded
+        komponentenData: {}, // Store individual komponent data with loading states
+        komponentenImages: {}, // Store tiny pictures for komponenten
+        totalKomponentenPrice: 0,
+        totalSavings: 0,
+        // Collapsible sections state
+        showQuestionForm: false,
+        showRatingForm: false,
+        showAvailabilityForm: false
+      };
     } else {
+      // No cached data found - full loading state
       this.state = {
         product: null,
         loading: true,
+        upgrading: false,
         error: null,
         attributeImages: {},
         attributes: [],
@@ -86,8 +151,8 @@ class ProductDetailPage extends Component {
   }
 
   componentDidMount() {
-    // Only load product data if not already cached
-    if (!this.state.product) {
+    // Load product data if we have no product or if we're in upgrading state
+    if (!this.state.product || this.state.upgrading) {
       this.loadProductData();
     } else {
       // Product is cached, but we still need to load komponenten if they exist
@@ -102,7 +167,7 @@ class ProductDetailPage extends Component {
   componentDidUpdate(prevProps) {
     if (prevProps.seoName !== this.props.seoName)
       this.setState(
-        { product: null, loading: true, error: null, imageDialogOpen: false },
+        { product: null, loading: true, upgrading: false, error: null, imageDialogOpen: false },
         this.loadProductData
       );
   }
@@ -373,6 +438,7 @@ class ProductDetailPage extends Component {
           this.setState({
             product: res.product,
             loading: false,
+            upgrading: false, // Clear upgrading state since we now have complete data
             error: null,
             imageDialogOpen: false,
             attributes: res.attributes,
@@ -526,14 +592,15 @@ class ProductDetailPage extends Component {
   };
 
     render() {
-    const { product, loading, error, attributeImages, isSteckling, attributes, komponentenLoaded, komponentenData, komponentenImages, totalKomponentenPrice, totalSavings } =
+    const { product, loading, upgrading, error, attributeImages, isSteckling, attributes, komponentenLoaded, komponentenData, komponentenImages, totalKomponentenPrice, totalSavings } =
       this.state;
 
     // Debug alerts removed
 
     
 
-    if (loading) {
+    if (loading && !upgrading) {
+      // Only show full loading screen when we have no product data at all
       // Check if prerender fallback is available
       if (typeof window !== "undefined" && window.__PRERENDER_FALLBACK__) {
         return (
@@ -977,7 +1044,7 @@ class ProductDetailPage extends Component {
         </Box>
 
         {/* Product full description */}
-        {product.description && (
+        {(product.description || upgrading) && (
           <Box
             sx={{
               mt: 4,
@@ -995,7 +1062,15 @@ class ProductDetailPage extends Component {
                 "& strong": { fontWeight: 600 },
               }}
             >
-              {parse(product.description)}
+              {product.description ? (
+                parse(product.description)
+              ) : upgrading ? (
+                <Box sx={{ textAlign: "center", py: 2 }}>
+                  <Typography variant="body1" color="text.secondary">
+                    {this.props.t ? this.props.t('product.loadingDescription') : 'Produktbeschreibung wird geladen...'}
+                  </Typography>
+                </Box>
+              ) : null}
             </Box>
           </Box>
         )}

src/i18n/locales/de/product.js

@@ -1,5 +1,6 @@
 export default {
   "loading": "Produkt wird geladen...",
+  "loadingDescription": "Produktbeschreibung wird geladen...",
   "notFound": "Produkt nicht gefunden",
   "notFoundDescription": "Das gesuchte Produkt existiert nicht oder wurde entfernt.",
   "backToHome": "Zurück zur Startseite",

src/i18n/locales/en/product.js

@@ -1,5 +1,6 @@
 export default {
   "loading": "Loading product...", // Produkt wird geladen...
+  "loadingDescription": "Loading product description...", // Produktbeschreibung wird geladen...
   "notFound": "Product not found", // Produkt nicht gefunden
   "notFoundDescription": "The product you are looking for does not exist or has been removed.", // Das gesuchte Produkt existiert nicht oder wurde entfernt.
   "backToHome": "Back to homepage", // Zurück zur Startseite

src/services/SocketManager.js

@@ -4,8 +4,8 @@ import { io } from 'socket.io-client';
 class SocketManager {
   constructor() {
     this.socket = io('', {
-      transports: ["websocket"],
-      autoConnect: false 
+      transports: ["websocket", "polling"],
+      autoConnect: false
     });
 
     this.emit = this.emit.bind(this);