fix(back-end): fix exclude object 0

backend/build.gradle

@@ -34,6 +34,7 @@ dependencies {
 	compileOnly 'org.projectlombok:lombok'
 	annotationProcessor 'org.projectlombok:lombok'
 	implementation 'io.github.openhtmltopdf:openhtmltopdf-pdfbox:1.1.37'
+	implementation 'io.github.openhtmltopdf:openhtmltopdf-svg-support:1.1.37'
 	implementation 'org.springframework.boot:spring-boot-starter-thymeleaf'
 	implementation 'net.codecrete.qrbill:qrbill-generator:3.4.0'
 

backend/src/main/java/com/printcalculator/service/InvoicePdfRenderingService.java

@@ -1,6 +1,7 @@
 package com.printcalculator.service;
 
 import com.openhtmltopdf.pdfboxout.PdfRendererBuilder;
+import com.openhtmltopdf.svgsupport.BatikSVGDrawer;
 import org.springframework.core.io.ClassPathResource;
 import org.springframework.stereotype.Service;
 import org.thymeleaf.TemplateEngine;
@@ -34,6 +35,7 @@ public class InvoicePdfRenderingService {
 
             PdfRendererBuilder openHtmlToPdfRendererBuilder = new PdfRendererBuilder();
             openHtmlToPdfRendererBuilder.useFastMode();
+            openHtmlToPdfRendererBuilder.useSVGDrawer(new BatikSVGDrawer());
             openHtmlToPdfRendererBuilder.withHtmlContent(renderedInvoiceHtml, classpathBaseUrlForHtmlResources);
             openHtmlToPdfRendererBuilder.toStream(generatedPdfByteArrayOutputStream);
             openHtmlToPdfRendererBuilder.run();

backend/src/main/resources/templates/invoice.html

@@ -76,9 +76,9 @@
   Pagamento entro 7 giorni. Grazie.
 </div>
 
-<!-- Pagina dedicata alla QR-bill -->
-<div class="page-break"></div>
-<div th:utext="${qrBillSvg}" style="width: 210mm; height: 105mm; position: absolute; bottom: 0; left: 0;"></div>
+<div style="page-break-before: always;"></div>
+<div style="position: absolute; bottom: 0; left: 0; width: 210mm; height: 105mm;" th:utext="${qrBillSvg}">
+</div>
 
 </body>
 </html>

frontend/src/app/features/calculator/services/quote-estimator.service.ts

@@ -180,22 +180,20 @@ export class QuoteEstimatorService {
                 const sessionId = sessionRes.id;
                 const sessionSetupCost = sessionRes.setupCostChf || 0;
                 
-                // 2. Upload files to this session
+                // 2. Process items SEQUENTIALLY to avoid timeouts/overload
                 const totalItems = request.items.length;
                 const allProgress: number[] = new Array(totalItems).fill(0);
                 const finalResponses: any[] = []; 
-                let completedRequests = 0;
+                let completedCount = 0;
 
-                const checkCompletion = () => {
-                     const avg = Math.round(allProgress.reduce((a, b) => a + b, 0) / totalItems);
-                     observer.next(avg);
-                     
-                     if (completedRequests === totalItems) {
+                const processNextItem = (index: number) => {
+                    if (index >= totalItems) {
+                        // All done
                         finalize(finalResponses, sessionSetupCost, sessionId);
+                        return;
                     }
-                };
 
-                request.items.forEach((item, index) => {
+                    const item = request.items[index];
                     const formData = new FormData();
                     formData.append('file', item.file);
                     
@@ -222,23 +220,35 @@ export class QuoteEstimatorService {
                         next: (event) => {
                             if (event.type === HttpEventType.UploadProgress && event.total) {
                                 allProgress[index] = Math.round((100 * event.loaded) / event.total);
-                                checkCompletion();
+                                reportProgress();
                             } else if (event.type === HttpEventType.Response) { 
                                 allProgress[index] = 100;
                                 finalResponses[index] = { ...event.body, success: true, fileName: item.file.name, originalQty: item.quantity, originalItem: item };
-                                 completedRequests++;
-                                 checkCompletion();
+                                completedCount++;
+                                reportProgress();
+                                // Next
+                                processNextItem(index + 1);
                             }
                         },
                         error: (err) => {
                             console.error('Item upload failed', err);
                             const errorMsg = err.error?.code === 'VIRUS_DETECTED' ? 'VIRUS_DETECTED' : 'UPLOAD_FAILED';
                             finalResponses[index] = { success: false, fileName: item.file.name, error: errorMsg };
-                            completedRequests++;
-                            checkCompletion();
+                            completedCount++;
+                            reportProgress();
+                            // Next even if error
+                            processNextItem(index + 1);
                         }
                     });
-                });
+                };
+
+                const reportProgress = () => {
+                     const avg = Math.round(allProgress.reduce((a, b) => a + b, 0) / totalItems);
+                     observer.next(avg);
+                };
+
+                // Start first item
+                processNextItem(0);
             },
             error: (err) => {
                 console.error('Failed to create session', err);
@@ -268,10 +278,8 @@ export class QuoteEstimatorService {
                      unitTime: res.printTimeSeconds || 0,
                      unitWeight: res.materialGrams || 0,
                      quantity: quantity,
-                     material: request.material,
+                     material: this.mapMaterial(request.material), // Uses session material
                      color: res.originalItem.color || 'Default'
-                     // Store ID if needed for updates? QuoteItem interface might need update
-                     // or we map it in component
                  });
                  
                  grandTotal += unitPrice * quantity;
@@ -280,7 +288,6 @@ export class QuoteEstimatorService {
              });
 
              if (validCount === 0) {
-                 // Check if any failed due to virus
                  const virusError = responses.find(r => r.error === 'VIRUS_DETECTED');
                  if (virusError) {
                      observer.error('VIRUS_DETECTED');