feat(back-end): refactor session creation

backend/build.gradle

@@ -29,6 +29,8 @@ dependencies {
 	developmentOnly 'org.springframework.boot:spring-boot-devtools'
 	testImplementation 'org.springframework.boot:spring-boot-starter-test'
 	testRuntimeOnly 'org.junit.platform:junit-platform-launcher'
+	compileOnly 'org.projectlombok:lombok'
+	annotationProcessor 'org.projectlombok:lombok'
 }
 
 tasks.named('test') {

backend/src/main/java/com/printcalculator/config/CorsConfig.java

@@ -17,9 +17,10 @@ public class CorsConfig implements WebMvcConfigurer {
                         "http://localhost:80",
                         "http://127.0.0.1",
                         "https://dev.3d-fab.ch",
+                        "https://int.3d-fab.ch",
                         "https://3d-fab.ch"
                 )
-                .allowedMethods("GET", "POST", "PUT", "DELETE", "OPTIONS")
+                .allowedMethods("GET", "POST", "PUT", "DELETE", "OPTIONS", "PATCH")
                 .allowedHeaders("*")
                 .allowCredentials(true);
     }

backend/src/main/java/com/printcalculator/controller/CustomQuoteRequestController.java

@@ -40,29 +40,20 @@ public class CustomQuoteRequestController {
     @PostMapping(consumes = MediaType.MULTIPART_FORM_DATA_VALUE)
     @Transactional
     public ResponseEntity<CustomQuoteRequest> createCustomQuoteRequest(
-            // Form fields
-            @RequestParam("requestType") String requestType,
-            @RequestParam("customerType") String customerType,
-            @RequestParam("email") String email,
-            @RequestParam(value = "phone", required = false) String phone,
-            @RequestParam(value = "name", required = false) String name,
-            @RequestParam(value = "companyName", required = false) String companyName,
-            @RequestParam(value = "contactPerson", required = false) String contactPerson,
-            @RequestParam("message") String message,
-            // Files (Max 15)
-            @RequestParam(value = "files", required = false) List<MultipartFile> files
+            @RequestPart("request") com.printcalculator.dto.QuoteRequestDto requestDto,
+            @RequestPart(value = "files", required = false) List<MultipartFile> files
     ) throws IOException {
         
         // 1. Create Request
         CustomQuoteRequest request = new CustomQuoteRequest();
-        request.setRequestType(requestType);
-        request.setCustomerType(customerType);
-        request.setEmail(email);
-        request.setPhone(phone);
-        request.setName(name);
-        request.setCompanyName(companyName);
-        request.setContactPerson(contactPerson);
-        request.setMessage(message);
+        request.setRequestType(requestDto.getRequestType());
+        request.setCustomerType(requestDto.getCustomerType());
+        request.setEmail(requestDto.getEmail());
+        request.setPhone(requestDto.getPhone());
+        request.setName(requestDto.getName());
+        request.setCompanyName(requestDto.getCompanyName());
+        request.setContactPerson(requestDto.getContactPerson());
+        request.setMessage(requestDto.getMessage());
         request.setStatus("PENDING");
         request.setCreatedAt(OffsetDateTime.now());
         request.setUpdatedAt(OffsetDateTime.now());

backend/src/main/java/com/printcalculator/controller/QuoteSessionController.java

@@ -28,7 +28,7 @@ import java.util.UUID;
 
 @RestController
 @RequestMapping("/api/quote-sessions")
-@CrossOrigin(origins = "*") // Allow CORS for dev
+
 public class QuoteSessionController {
 
     private final QuoteSessionRepository sessionRepo;
@@ -36,6 +36,7 @@ public class QuoteSessionController {
     private final SlicerService slicerService;
     private final QuoteCalculator quoteCalculator;
     private final PrinterMachineRepository machineRepo;
+    private final com.printcalculator.repository.PricingPolicyRepository pricingRepo;
 
     // Defaults
     private static final String DEFAULT_FILAMENT = "pla_basic";
@@ -45,49 +46,34 @@ public class QuoteSessionController {
                                   QuoteLineItemRepository lineItemRepo,
                                   SlicerService slicerService,
                                   QuoteCalculator quoteCalculator,
-                                  PrinterMachineRepository machineRepo) {
+                                  PrinterMachineRepository machineRepo,
+                                  com.printcalculator.repository.PricingPolicyRepository pricingRepo) {
         this.sessionRepo = sessionRepo;
         this.lineItemRepo = lineItemRepo;
         this.slicerService = slicerService;
         this.quoteCalculator = quoteCalculator;
         this.machineRepo = machineRepo;
+        this.pricingRepo = pricingRepo;
     }
 
-    // 1. Start a new session with a file
-    @PostMapping(value = "/line-items", consumes = MediaType.MULTIPART_FORM_DATA_VALUE)
+    // 1. Start a new empty session
+    @PostMapping(value = "")
     @Transactional
-    public ResponseEntity<QuoteSession> createSessionAndAddItem(
-            @RequestParam("file") MultipartFile file
-    ) throws IOException {
-        // Create new session
+    public ResponseEntity<QuoteSession> createSession() {
         QuoteSession session = new QuoteSession();
         session.setStatus("ACTIVE");
-        session.setPricingVersion("v1"); // Placeholder
-        session.setMaterialCode(DEFAULT_FILAMENT); // Default for session
+        session.setPricingVersion("v1");
+        // Default material/settings will be set when items are added or updated?
+        // For now set safe defaults
+        session.setMaterialCode("pla_basic"); 
         session.setSupportsEnabled(false);
         session.setCreatedAt(OffsetDateTime.now());
         session.setExpiresAt(OffsetDateTime.now().plusDays(30)); 
-        // Set defaults
-        session.setSetupCostChf(BigDecimal.ZERO);
+        
+        var policy = pricingRepo.findFirstByIsActiveTrueOrderByValidFromDesc();
+        session.setSetupCostChf(policy != null ? policy.getFixedJobFeeChf() : BigDecimal.ZERO);
         
         session = sessionRepo.save(session);
-
-        // Process file and add item
-        addItemToSession(session, file);
-        
-        // Refresh session to return updated data (if we added list fetching to repo, otherwise manually fetch items if needed for response)
-        // For now, let's just return the session. The client might need to fetch items separately or we can return a DTO.
-        // User request: "ritorna sessione + line items + total"
-        // Since QuoteSession entity doesn't have a @OneToMany list of items (it has OneToMany usually but mapped by item), 
-        // we might need a DTO or just rely on the fact that we might add the list to the entity if valid.
-        // Looking at QuoteSession.java, it does NOT have a list of items.
-        // So we should probably return a DTO or just return the Session and Client calls GET /quote-sessions/{id} immediately?
-        // User request: "ritorna quoteSessionId" (actually implies just ID, but likely wants full object).
-        // "ritorna sessione + line items + total (usa view o calcolo service)" refers to GET /quote-sessions/{id}
-        
-        // Let's return the full session details including items in a DTO/Map/wrapper?
-        // Or just the session for now. The user said "ritorna quoteSessionId" for this specific endpoint.
-        // Let's return the Session entity for now.
         return ResponseEntity.ok(session);
     }
     
@@ -96,17 +82,18 @@ public class QuoteSessionController {
     @Transactional
     public ResponseEntity<QuoteLineItem> addItemToExistingSession(
             @PathVariable UUID id,
-            @RequestParam("file") MultipartFile file
+            @RequestPart("settings") com.printcalculator.dto.PrintSettingsDto settings,
+            @RequestPart("file") MultipartFile file
     ) throws IOException {
         QuoteSession session = sessionRepo.findById(id)
                 .orElseThrow(() -> new RuntimeException("Session not found"));
 
-        QuoteLineItem item = addItemToSession(session, file);
+        QuoteLineItem item = addItemToSession(session, file, settings);
         return ResponseEntity.ok(item);
     }
 
     // Helper to add item
-    private QuoteLineItem addItemToSession(QuoteSession session, MultipartFile file) throws IOException {
+    private QuoteLineItem addItemToSession(QuoteSession session, MultipartFile file, com.printcalculator.dto.PrintSettingsDto settings) throws IOException {
         if (file.isEmpty()) throw new IOException("File is empty");
 
         // 1. Save file temporarily
@@ -114,35 +101,87 @@ public class QuoteSessionController {
         file.transferTo(tempInput.toFile());
 
         try {
-            // 2. Mock Calc or Real Calc
-            // The user said: "per ora calcolo mock" (mock calculation) but we have SlicerService. 
-            // "Nota: il calcolo può essere stub: set print_time_seconds/material_grams/unit_price_chf a valori placeholder."
-            // However, since we have the SlicerService, we CAN try to use it if we want, OR just use stub as requested to be fast?
-            // "avvia calcolo (per ora calcolo mock)" -> I will use a simple Stub to satisfy the requirement immediately.
-            // But I will also implement the structure to swap to Real Calc.
+            // Apply Basic/Advanced Logic
+            applyPrintSettings(settings);
+
+            // REAL SLICING
+            // 1. Pick Machine (default to first active or specific)
+            PrinterMachine machine = machineRepo.findFirstByIsActiveTrue()
+                    .orElseThrow(() -> new RuntimeException("No active printer found"));
             
-            // STUB CALCULATION as requested
-            int printTime = 3600; // 1 hour
-            BigDecimal materialGrams = new BigDecimal("50.00");
-            BigDecimal unitPrice = new BigDecimal("15.00");
+            // 2. Pick Profiles
+            String machineProfile = machine.getPrinterDisplayName(); // e.g. "Bambu Lab A1 0.4 nozzle"
+            // If the display name doesn't match the json profile name, we might need a mapping key in DB.
+            // For now assuming display name works or we use a tough default
+             machineProfile = "Bambu Lab A1 0.4 nozzle"; // Force known good for now? Or use DB field if exists. 
+             // Ideally: machine.getSlicerProfileName();
             
-            // 3. Create Line Item
+            String filamentProfile = "Generic " + (settings.getMaterial() != null ? settings.getMaterial().toUpperCase() : "PLA");
+            // Mapping: "pla_basic" -> "Generic PLA", "petg_basic" -> "Generic PETG"
+            if (settings.getMaterial() != null) {
+                if (settings.getMaterial().toLowerCase().contains("pla")) filamentProfile = "Generic PLA";
+                else if (settings.getMaterial().toLowerCase().contains("petg")) filamentProfile = "Generic PETG";
+                else if (settings.getMaterial().toLowerCase().contains("tpu")) filamentProfile = "Generic TPU";
+                else if (settings.getMaterial().toLowerCase().contains("abs")) filamentProfile = "Generic ABS";
+            }
+
+            String processProfile = "0.20mm Standard @BBL A1"; 
+            // Mapping quality to process
+            // "standard" -> "0.20mm Standard @BBL A1"
+            // "draft" -> "0.28mm Extra Draft @BBL A1"
+            // "high" -> "0.12mm Fine @BBL A1" (approx names, need to be exact for Orca)
+            // Let's use robust defaults or simple overrides
+            if (settings.getLayerHeight() != null) {
+                 if (settings.getLayerHeight() >= 0.28) processProfile = "0.28mm Extra Draft @BBL A1";
+                 else if (settings.getLayerHeight() <= 0.12) processProfile = "0.12mm Fine @BBL A1";
+            }
+            
+            // Build overrides map from settings
+            Map<String, String> processOverrides = new HashMap<>();
+            if (settings.getLayerHeight() != null) processOverrides.put("layer_height", String.valueOf(settings.getLayerHeight()));
+            if (settings.getInfillDensity() != null) processOverrides.put("sparse_infill_density", settings.getInfillDensity() + "%");
+            if (settings.getInfillPattern() != null) processOverrides.put("sparse_infill_pattern", settings.getInfillPattern());
+            
+            // 3. Slice
+            PrintStats stats = slicerService.slice(
+                tempInput.toFile(), 
+                machineProfile, 
+                filamentProfile, 
+                processProfile, 
+                null, // machine overrides
+                processOverrides
+            );
+            
+            // 4. Calculate Quote
+            QuoteResult result = quoteCalculator.calculate(stats, machine.getPrinterDisplayName(), filamentProfile);
+
+            // 5. Create Line Item
             QuoteLineItem item = new QuoteLineItem();
             item.setQuoteSession(session);
             item.setOriginalFilename(file.getOriginalFilename());
             item.setQuantity(1);
-            item.setColorCode("#FFFFFF"); // Default
-            item.setStatus("CALCULATED");
+            item.setColorCode(settings.getColor() != null ? settings.getColor() : "#FFFFFF");
+            item.setStatus("READY"); // or CALCULATED
             
-            item.setPrintTimeSeconds(printTime);
-            item.setMaterialGrams(materialGrams);
-            item.setUnitPriceChf(unitPrice);
-            item.setPricingBreakdown(Map.of("mock", true));
+            item.setPrintTimeSeconds((int) stats.printTimeSeconds());
+            item.setMaterialGrams(BigDecimal.valueOf(stats.filamentWeightGrams()));
+            item.setUnitPriceChf(BigDecimal.valueOf(result.getTotalPrice()));
             
-            // Set simple bounding box
-            item.setBoundingBoxXMm(BigDecimal.valueOf(100));
-            item.setBoundingBoxYMm(BigDecimal.valueOf(100));
-            item.setBoundingBoxZMm(BigDecimal.valueOf(20));
+            // Store breakdown
+            Map<String, Object> breakdown = new HashMap<>();
+            breakdown.put("machine_cost", result.getTotalPrice() - result.getSetupCost()); // Approximation? 
+            // Better: QuoteResult could expose detailed breakdown. For now just storing what we have.
+            breakdown.put("setup_fee", result.getSetupCost());
+            item.setPricingBreakdown(breakdown);
+            
+            // Dimensions
+            // Cannot get bb from GCodeParser yet? 
+            // If GCodeParser doesn't return size, we might defaults or 0.
+            // Stats has filament used. 
+            // Let's set dummy for now or upgrade parser later.
+            item.setBoundingBoxXMm(BigDecimal.ZERO);
+            item.setBoundingBoxYMm(BigDecimal.ZERO);
+            item.setBoundingBoxZMm(BigDecimal.ZERO);
             
             item.setCreatedAt(OffsetDateTime.now());
             item.setUpdatedAt(OffsetDateTime.now());
@@ -154,6 +193,37 @@ public class QuoteSessionController {
         }
     }
 
+    private void applyPrintSettings(com.printcalculator.dto.PrintSettingsDto settings) {
+        if ("BASIC".equalsIgnoreCase(settings.getComplexityMode())) {
+            // Set defaults based on Quality
+            String quality = settings.getQuality() != null ? settings.getQuality().toLowerCase() : "standard";
+            
+            switch (quality) {
+                case "draft":
+                    settings.setLayerHeight(0.28);
+                    settings.setInfillDensity(15.0);
+                    settings.setInfillPattern("grid");
+                    break;
+                case "high":
+                    settings.setLayerHeight(0.12);
+                    settings.setInfillDensity(20.0);
+                    settings.setInfillPattern("gyroid");
+                    break;
+                case "standard":
+                default:
+                    settings.setLayerHeight(0.20);
+                    settings.setInfillDensity(20.0);
+                    settings.setInfillPattern("grid");
+                    break;
+            }
+        } else {
+            // ADVANCED Mode: Use values from Frontend, set defaults if missing
+            if (settings.getLayerHeight() == null) settings.setLayerHeight(0.20);
+            if (settings.getInfillDensity() == null) settings.setInfillDensity(20.0);
+            if (settings.getInfillPattern() == null) settings.setInfillPattern("grid");
+        }
+    }
+
     // 3. Update Line Item
     @PatchMapping("/line-items/{lineItemId}")
     @Transactional

backend/src/main/java/com/printcalculator/dto/PrintSettingsDto.java

@@ -0,0 +1,23 @@
+package com.printcalculator.dto;
+
+import lombok.Data;
+
+@Data
+public class PrintSettingsDto {
+    // Mode: "BASIC" or "ADVANCED"
+    private String complexityMode;
+    
+    // Common
+    private String material; // e.g. "PLA", "PETG"
+    private String color;    // e.g. "White", "#FFFFFF"
+    
+    // Basic Mode
+    private String quality;  // "draft", "standard", "high"
+    
+    // Advanced Mode (Optional in Basic)
+    private Double layerHeight;
+    private Double infillDensity;
+    private String infillPattern;
+    private Boolean supportsEnabled;
+    private String notes;
+}

backend/src/main/java/com/printcalculator/dto/QuoteRequestDto.java

@@ -0,0 +1,15 @@
+package com.printcalculator.dto;
+
+import lombok.Data;
+
+@Data
+public class QuoteRequestDto {
+    private String requestType; // "PRINT_SERVICE" or "DESIGN_SERVICE"
+    private String customerType; // "PRIVATE" or "BUSINESS"
+    private String email;
+    private String phone;
+    private String name;
+    private String companyName;
+    private String contactPerson;
+    private String message;
+}

frontend/src/app/core/services/quote-request.service.ts

@@ -0,0 +1,40 @@
+import { Injectable, inject } from '@angular/core';
+import { HttpClient } from '@angular/common/http';
+import { Observable } from 'rxjs';
+import { environment } from '../../../environments/environment';
+
+export interface QuoteRequestDto {
+  requestType: string;
+  customerType: string;
+  email: string;
+  phone?: string;
+  name?: string;
+  companyName?: string;
+  contactPerson?: string;
+  message: string;
+}
+
+@Injectable({
+  providedIn: 'root'
+})
+export class QuoteRequestService {
+  private http = inject(HttpClient);
+  private apiUrl = `${environment.apiUrl}/api/custom-quote-requests`;
+
+  createRequest(request: QuoteRequestDto, files: File[]): Observable<any> {
+    const formData = new FormData();
+    
+    // Append Request DTO as JSON Blob
+    const requestBlob = new Blob([JSON.stringify(request)], {
+      type: 'application/json'
+    });
+    formData.append('request', requestBlob);
+    
+    // Append Files
+    files.forEach(file => {
+      formData.append('files', file);
+    });
+
+    return this.http.post(this.apiUrl, formData);
+  }
+}

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

@@ -128,203 +128,135 @@ export class QuoteEstimatorService {
     }
     
     return new Observable(observer => {
-        const totalItems = request.items.length;
-        const allProgress: number[] = new Array(totalItems).fill(0);
-        const finalResponses: any[] = [];
-        let completedRequests = 0;
+        // 1. Create Session first
+        const headers: any = {};
+        // @ts-ignore
+        if (environment.basicAuth) headers['Authorization'] = 'Basic ' + btoa(environment.basicAuth);
 
-        const uploads = request.items.map((item, index) => {
-             const formData = new FormData();
-             formData.append('file', item.file);
-             // machine param removed - backend uses default active
-             
-             // Map material? Or trust frontend to send correct code?
-             // Since we fetch options now, we should send the code directly.
-             // But for backward compat/safety/mapping logic in mapMaterial, let's keep it or update it.
-             // If frontend sends 'PLA', mapMaterial returns 'pla_basic'.
-             // We should check if request.material is already a code from options.
-             // For now, let's assume request.material IS the code if it matches our new options,
-             // or fallback to mapper if it's old legacy string.
-             // Let's keep mapMaterial but update it to be smarter if needed, or rely on UploadForm to send correct codes.
-             // For now, let's use mapMaterial as safety, assuming frontend sends short codes 'PLA'.
-             // Wait, if we use dynamic options, the 'value' in select will be the 'code' from backend (e.g. 'PLA').
-             // Backend expects 'pla_basic' or just 'PLA'? 
-             // QuoteController -> processRequest -> SlicerService.slice -> assumes 'filament' is a profile name like 'pla_basic'.
-             // So we MUST map 'PLA' to 'pla_basic' UNLESS backend options return 'pla_basic' as code.
-             // Backend OptionsController returns type.getMaterialCode() which is 'PLA'.
-             // So we still need mapping to slicer profile names.
-             
-             formData.append('filament', this.mapMaterial(request.material));
-             formData.append('quality', this.mapQuality(request.quality));
-             
-             // Send color for both modes if present, defaulting to Black
-             formData.append('material_color', item.color || 'Black');
+        this.http.post<any>(`${environment.apiUrl}/api/quote-sessions`, {}, { headers }).subscribe({
+            next: (sessionRes) => {
+                const sessionId = sessionRes.id;
+                const sessionSetupCost = sessionRes.setupCostChf || 0;
+                
+                // 2. Upload files to this session
+                const totalItems = request.items.length;
+                const allProgress: number[] = new Array(totalItems).fill(0);
+                const finalResponses: any[] = []; 
+                let completedRequests = 0;
 
-             if (request.mode === 'advanced') {
-                if (request.infillDensity) formData.append('infill_density', request.infillDensity.toString());
-                if (request.infillPattern) formData.append('infill_pattern', request.infillPattern);
-                if (request.supportEnabled) formData.append('support_enabled', 'true');
-                if (request.layerHeight) formData.append('layer_height', request.layerHeight.toString());
-                if (request.nozzleDiameter) formData.append('nozzle_diameter', request.nozzleDiameter.toString());
+                const checkCompletion = () => {
+                     const avg = Math.round(allProgress.reduce((a, b) => a + b, 0) / totalItems);
+                     observer.next(avg);
+                     
+                     if (completedRequests === totalItems) {
+                         finalize(finalResponses, sessionSetupCost);
+                     }
+                };
+
+                request.items.forEach((item, index) => {
+                     const formData = new FormData();
+                     formData.append('file', item.file);
+                     
+                     const settings = {
+                         complexityMode: request.mode.toUpperCase(),
+                         material: this.mapMaterial(request.material),
+                         quality: request.quality,
+                         supportsEnabled: request.supportEnabled,
+                         color: item.color || '#FFFFFF',
+                         layerHeight: request.mode === 'advanced' ? request.layerHeight : null,
+                         infillDensity: request.mode === 'advanced' ? request.infillDensity : null,
+                         infillPattern: request.mode === 'advanced' ? request.infillPattern : null,
+                         nozzleDiameter: request.mode === 'advanced' ? request.nozzleDiameter : null
+                     };
+        
+                     const settingsBlob = new Blob([JSON.stringify(settings)], { type: 'application/json' });
+                     formData.append('settings', settingsBlob);
+
+                     this.http.post<any>(`${environment.apiUrl}/api/quote-sessions/${sessionId}/line-items`, formData, { 
+                         headers,
+                         reportProgress: true,
+                         observe: 'events'
+                     }).subscribe({
+                        next: (event) => {
+                            if (event.type === HttpEventType.UploadProgress && event.total) {
+                                allProgress[index] = Math.round((100 * event.loaded) / event.total);
+                                checkCompletion();
+                            } 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();
+                            }
+                        },
+                        error: (err) => {
+                            console.error('Item upload failed', err);
+                            finalResponses[index] = { success: false, fileName: item.file.name };
+                            completedRequests++;
+                            checkCompletion();
+                        }
+                    });
+                });
+            },
+            error: (err) => {
+                console.error('Failed to create session', err);
+                observer.error('Could not initialize quote session');
+            }
+        });
+
+        const finalize = (responses: any[], setupCost: number) => {
+             observer.next(100); 
+             const items: QuoteItem[] = [];
+             let grandTotal = 0;
+             let totalTime = 0;
+             let totalWeight = 0;
+             let validCount = 0;
+
+             responses.forEach((res, idx) => {
+                 if (!res || !res.success) return;
+                 validCount++;
+                 
+                 const unitPrice = res.unitPriceChf || 0;
+                 const quantity = res.originalQty || 1;
+                 
+                 items.push({
+                     fileName: res.fileName,
+                     unitPrice: unitPrice,
+                     unitTime: res.printTimeSeconds || 0,
+                     unitWeight: res.materialGrams || 0,
+                     quantity: quantity,
+                     material: request.material,
+                     color: res.originalItem.color || 'Default'
+                 });
+                 
+                 grandTotal += unitPrice * quantity;
+                 totalTime += (res.printTimeSeconds || 0) * quantity;
+                 totalWeight += (res.materialGrams || 0) * quantity;
+             });
+
+             if (validCount === 0) {
+                 observer.error('All calculations failed.');
+                 return;
              }
              
-             const headers: any = {};
-             // @ts-ignore
-             if (environment.basicAuth) headers['Authorization'] = 'Basic ' + btoa(environment.basicAuth);
+             grandTotal += setupCost;
 
-             return this.http.post<BackendResponse | BackendQuoteResult>(`${environment.apiUrl}/api/quote`, formData, { 
-                 headers,
-                 reportProgress: true,
-                 observe: 'events'
-             }).pipe(
-                 map(event => ({ item, event, index })),
-                 catchError(err => of({ item, error: err, index }))
-             );
-        });
-
-        // Subscribe to all
-        uploads.forEach((obs) => {
-            obs.subscribe({
-                next: (wrapper: any) => {
-                    const idx = wrapper.index;
-                    
-                    if (wrapper.error) {
-                        finalResponses[idx] = { success: false, fileName: wrapper.item.file.name };
-                    }
-
-                    const event = wrapper.event;
-                    if (event && event.type === HttpEventType.UploadProgress) {
-                        if (event.total) {
-                            const percent = Math.round((100 * event.loaded) / event.total);
-                            allProgress[idx] = percent;
-                            // Emit average progress
-                            const avg = Math.round(allProgress.reduce((a, b) => a + b, 0) / totalItems);
-                            observer.next(avg); 
-                        }
-                    } else if ((event && event.type === HttpEventType.Response) || wrapper.error) { 
-                        // It's done (either response or error caught above)
-                        if (!finalResponses[idx]) { // only if not already set by error
-                             allProgress[idx] = 100;
-                             if (wrapper.error) {
-                                 finalResponses[idx] = { success: false, fileName: wrapper.item.file.name };
-                             } else {
-                                finalResponses[idx] = { ...event.body, fileName: wrapper.item.file.name, originalQty: wrapper.item.quantity };
-                             }
-                             completedRequests++;
-                        }
-                        
-                        if (completedRequests === totalItems) {
-                            // All done
-                            observer.next(100); 
-                            
-                            // Calculate Results
-                            let setupCost = 10;
-                            let setupCostFromBackend: number | null = null;
-                            let currencyFromBackend: string | null = null;
-
-                            if (request.nozzleDiameter && request.nozzleDiameter !== 0.4) {
-                                setupCost += 2;
-                            }
-                            
-                            const items: QuoteItem[] = [];
-                            
-                            finalResponses.forEach((res, idx) => {
-                                if (!res) return;
-                                const originalItem = request.items[idx];
-                                const normalized = this.normalizeResponse(res);
-                                if (!normalized.success) return;
-
-                                if (normalized.currency && currencyFromBackend == null) {
-                                    currencyFromBackend = normalized.currency;
-                                }
-                                if (normalized.setupCost != null && setupCostFromBackend == null) {
-                                    setupCostFromBackend = normalized.setupCost;
-                                }
-
-                                items.push({
-                                    fileName: res.fileName,
-                                    unitPrice: normalized.unitPrice,
-                                    unitTime: normalized.unitTime,
-                                    unitWeight: normalized.unitWeight,
-                                    quantity: res.originalQty, // Use the requested quantity
-                                    material: request.material,
-                                    color: originalItem.color || 'Default'
-                                });
-                            });
-
-                            if (items.length === 0) {
-                                observer.error('All calculations failed.');
-                                return;
-                            }
-                            
-                            // Initial Aggregation
-                            const useBackendSetup = setupCostFromBackend != null;
-                            let grandTotal = useBackendSetup ? 0 : setupCost;
-                            let totalTime = 0;
-                            let totalWeight = 0;
-                            
-                            items.forEach(item => {
-                                grandTotal += item.unitPrice * item.quantity;
-                                totalTime += item.unitTime * item.quantity;
-                                totalWeight += item.unitWeight * item.quantity;
-                            });
-
-                            const totalHours = Math.floor(totalTime / 3600);
-                            const totalMinutes = Math.ceil((totalTime % 3600) / 60);
-
-                            const result: QuoteResult = {
-                                items,
-                                setupCost: useBackendSetup ? setupCostFromBackend! : setupCost,
-                                currency: currencyFromBackend || 'CHF',
-                                totalPrice: Math.round(grandTotal * 100) / 100,
-                                totalTimeHours: totalHours,
-                                totalTimeMinutes: totalMinutes,
-                                totalWeight: Math.ceil(totalWeight),
-                                notes: request.notes
-                            };
-                            
-                            observer.next(result);
-                            observer.complete();
-                        }
-                    }
-                },
-                error: (err) => {
-                    console.error('Error in request subscription', err);
-                    completedRequests++;
-                     if (completedRequests === totalItems) {
-                         observer.error('Requests failed');
-                    }
-                }
-            });
-        });
+             const result: QuoteResult = {
+                 items,
+                 setupCost: setupCost,
+                 currency: 'CHF',
+                 totalPrice: Math.round(grandTotal * 100) / 100,
+                 totalTimeHours: Math.floor(totalTime / 3600),
+                 totalTimeMinutes: Math.ceil((totalTime % 3600) / 60),
+                 totalWeight: Math.ceil(totalWeight),
+                 notes: request.notes
+             };
+             
+             observer.next(result);
+             observer.complete();
+        };
     });
   }
 
-  private normalizeResponse(res: any): { success: boolean; unitPrice: number; unitTime: number; unitWeight: number; setupCost?: number; currency?: string } {
-    if (res && typeof res.totalPrice === 'number' && res.stats && typeof res.stats.printTimeSeconds === 'number') {
-      return {
-        success: true,
-        unitPrice: res.totalPrice,
-        unitTime: res.stats.printTimeSeconds,
-        unitWeight: res.stats.filamentWeightGrams,
-        setupCost: res.setupCost,
-        currency: res.currency
-      };
-    }
-
-    if (res && res.success && res.data) {
-      return {
-        success: true,
-        unitPrice: res.data.cost.total,
-        unitTime: res.data.print_time_seconds,
-        unitWeight: res.data.material_grams,
-        currency: 'CHF'
-      };
-    }
-
-    return { success: false, unitPrice: 0, unitTime: 0, unitWeight: 0 };
-  }
-
   private mapMaterial(mat: string): string {
     const m = mat.toUpperCase();
     if (m.includes('PLA')) return 'pla_basic';
@@ -333,13 +265,6 @@ export class QuoteEstimatorService {
     return 'pla_basic';
   }
 
-  private mapQuality(qual: string): string {
-    const q = qual.toLowerCase();
-    if (q.includes('draft')) return 'draft';
-    if (q.includes('high')) return 'extra_fine';
-    return 'standard';
-  }
-
   // Consultation Data Transfer
   private pendingConsultation = signal<{files: File[], message: string} | null>(null);
 

frontend/src/app/features/contact/components/contact-form/contact-form.component.ts

@@ -1,10 +1,11 @@
-import { Component, signal, effect } from '@angular/core';
+import { Component, signal, effect, inject } from '@angular/core';
 import { CommonModule } from '@angular/common';
 import { ReactiveFormsModule, FormBuilder, FormGroup, Validators } from '@angular/forms';
 import { TranslateModule, TranslateService } from '@ngx-translate/core';
 import { AppInputComponent } from '../../../../shared/components/app-input/app-input.component';
 import { AppButtonComponent } from '../../../../shared/components/app-button/app-button.component';
 import { QuoteEstimatorService } from '../../../calculator/services/quote-estimator.service';
+import { QuoteRequestService } from '../../../../core/services/quote-request.service';
 
 interface FilePreview {
   file: File;
@@ -37,6 +38,8 @@ export class ContactFormComponent {
     { value: 'question', label: 'CONTACT.REQ_TYPE_QUESTION' }
   ];
 
+  private quoteRequestService = inject(QuoteRequestService);
+
   constructor(
       private fb: FormBuilder, 
       private translate: TranslateService,
@@ -156,13 +159,34 @@ export class ContactFormComponent {
 
   onSubmit() {
     if (this.form.valid) {
-      const formData = {
-        ...this.form.value,
-        files: this.files().map(f => f.file)
-      };
-      console.log('Form Submit:', formData);
+      const formVal = this.form.value;
+      const isCompany = formVal.isCompany;
+      
+      const requestDto: any = {
+        requestType: formVal.requestType,
+        customerType: isCompany ? 'BUSINESS' : 'PRIVATE',
+        email: formVal.email,
+        phone: formVal.phone,
+        message: formVal.message
+      };
+
+      if (isCompany) {
+        requestDto.companyName = formVal.companyName;
+        requestDto.contactPerson = formVal.referencePerson;
+      } else {
+        requestDto.name = formVal.name;
+      }
+
+      this.quoteRequestService.createRequest(requestDto, this.files().map(f => f.file)).subscribe({
+        next: () => {
+          this.sent.set(true);
+        },
+        error: (err) => {
+          console.error('Submission failed', err);
+          alert('Error submitting request. Please try again.');
+        }
+      });
       
-      this.sent.set(true);
     } else {
       this.form.markAllAsTouched();
     }