feat(back-end): email service and test

backend/build.gradle

@@ -37,6 +37,7 @@ dependencies {
 	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'
+	implementation 'org.springframework.boot:spring-boot-starter-mail'
 
 
 

backend/src/main/java/com/printcalculator/BackendApplication.java

@@ -3,12 +3,14 @@ package com.printcalculator;
 import org.springframework.boot.SpringApplication;
 import org.springframework.boot.autoconfigure.SpringBootApplication;
 import org.springframework.scheduling.annotation.EnableScheduling;
+import org.springframework.scheduling.annotation.EnableAsync;
 import org.springframework.scheduling.annotation.EnableScheduling;
 import org.springframework.transaction.annotation.EnableTransactionManagement;
 
 @SpringBootApplication
 @EnableTransactionManagement
 @EnableScheduling
+@EnableAsync
 public class BackendApplication {
 
 	public static void main(String[] args) {

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

@@ -0,0 +1,44 @@
+package com.printcalculator.controller;
+
+import org.springframework.context.annotation.Profile;
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RestController;
+import org.thymeleaf.TemplateEngine;
+import org.thymeleaf.context.Context;
+
+import java.time.OffsetDateTime;
+import java.time.format.DateTimeFormatter;
+import java.util.HashMap;
+import java.util.Map;
+import java.util.UUID;
+
+@RestController
+@RequestMapping("/api/dev/email")
+@Profile("local")
+public class DevEmailTestController {
+
+    private final TemplateEngine templateEngine;
+
+    public DevEmailTestController(TemplateEngine templateEngine) {
+        this.templateEngine = templateEngine;
+    }
+
+    @GetMapping("/test-template")
+    public ResponseEntity<String> testTemplate() {
+        Context context = new Context();
+        Map<String, Object> templateData = new HashMap<>();
+        templateData.put("customerName", "Mario Rossi");
+        templateData.put("orderId", UUID.randomUUID());
+        templateData.put("orderDate", OffsetDateTime.now().format(DateTimeFormatter.ofPattern("dd/MM/yyyy HH:mm")));
+        templateData.put("totalCost", "45.50");
+        
+        context.setVariables(templateData);
+        String html = templateEngine.process("email/order-confirmation", context);
+        
+        return ResponseEntity.ok()
+                .header("Content-Type", "text/html; charset=utf-8")
+                .body(html);
+    }
+}

backend/src/main/java/com/printcalculator/event/OrderCreatedEvent.java

@@ -0,0 +1,16 @@
+package com.printcalculator.event;
+
+import com.printcalculator.entity.Order;
+import lombok.Getter;
+import org.springframework.context.ApplicationEvent;
+
+@Getter
+public class OrderCreatedEvent extends ApplicationEvent {
+
+    private final Order order;
+
+    public OrderCreatedEvent(Object source, Order order) {
+        super(source);
+        this.order = order;
+    }
+}

backend/src/main/java/com/printcalculator/event/listener/OrderEmailListener.java

@@ -0,0 +1,77 @@
+package com.printcalculator.event.listener;
+
+import com.printcalculator.entity.Order;
+import com.printcalculator.event.OrderCreatedEvent;
+import com.printcalculator.service.email.EmailNotificationService;
+import lombok.RequiredArgsConstructor;
+import lombok.extern.slf4j.Slf4j;
+import org.springframework.beans.factory.annotation.Value;
+import org.springframework.context.event.EventListener;
+import org.springframework.scheduling.annotation.Async;
+import org.springframework.stereotype.Component;
+
+import java.time.format.DateTimeFormatter;
+import java.util.HashMap;
+import java.util.Map;
+
+@Slf4j
+@Component
+@RequiredArgsConstructor
+public class OrderEmailListener {
+
+    private final EmailNotificationService emailNotificationService;
+
+    @Value("${app.mail.admin.enabled:true}")
+    private boolean adminMailEnabled;
+
+    @Value("${app.mail.admin.address:}")
+    private String adminMailAddress;
+
+    @Async
+    @EventListener
+    public void handleOrderCreatedEvent(OrderCreatedEvent event) {
+        Order order = event.getOrder();
+        log.info("Processing OrderCreatedEvent for order id: {}", order.getId());
+
+        try {
+            sendCustomerConfirmationEmail(order);
+            
+            if (adminMailEnabled && adminMailAddress != null && !adminMailAddress.isEmpty()) {
+                sendAdminNotificationEmail(order);
+            }
+        } catch (Exception e) {
+            log.error("Failed to process email notifications for order id: {}", order.getId(), e);
+        }
+    }
+
+    private void sendCustomerConfirmationEmail(Order order) {
+        Map<String, Object> templateData = new HashMap<>();
+        templateData.put("customerName", order.getCustomer().getFirstName());
+        templateData.put("orderId", order.getId());
+        templateData.put("orderDate", order.getCreatedAt().format(DateTimeFormatter.ofPattern("dd/MM/yyyy HH:mm")));
+        templateData.put("totalCost", String.format("%.2f", order.getTotalChf()));
+
+        emailNotificationService.sendEmail(
+                order.getCustomer().getEmail(),
+                "Conferma Ordine #" + order.getId() + " - 3D-Fab",
+                "order-confirmation",
+                templateData
+        );
+    }
+
+    private void sendAdminNotificationEmail(Order order) {
+        Map<String, Object> templateData = new HashMap<>();
+        templateData.put("customerName", order.getCustomer().getFirstName() + " " + order.getCustomer().getLastName());
+        templateData.put("orderId", order.getId());
+        templateData.put("orderDate", order.getCreatedAt().format(DateTimeFormatter.ofPattern("dd/MM/yyyy HH:mm")));
+        templateData.put("totalCost", String.format("%.2f", order.getTotalChf()));
+        
+        // Possiamo riutilizzare lo stesso template per ora o crearne uno ad-hoc in futuro
+        emailNotificationService.sendEmail(
+                adminMailAddress,
+                "Nuovo Ordine Ricevuto #" + order.getId() + " - " + order.getCustomer().getLastName(),
+                "order-confirmation", 
+                templateData
+        );
+    }
+}

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

@@ -8,9 +8,10 @@ import com.printcalculator.repository.OrderItemRepository;
 import com.printcalculator.repository.OrderRepository;
 import com.printcalculator.repository.QuoteLineItemRepository;
 import com.printcalculator.repository.QuoteSessionRepository;
+import com.printcalculator.event.OrderCreatedEvent;
+import org.springframework.context.ApplicationEventPublisher;
 import org.springframework.stereotype.Service;
 import org.springframework.transaction.annotation.Transactional;
-import org.springframework.web.multipart.MultipartFile;
 
 import java.io.IOException;
 import java.math.BigDecimal;
@@ -34,6 +35,7 @@ public class OrderService {
     private final StorageService storageService;
     private final InvoicePdfRenderingService invoiceService;
     private final QrBillService qrBillService;
+    private final ApplicationEventPublisher eventPublisher;
 
     public OrderService(OrderRepository orderRepo,
                         OrderItemRepository orderItemRepo,
@@ -42,7 +44,8 @@ public class OrderService {
                         CustomerRepository customerRepo,
                         StorageService storageService,
                         InvoicePdfRenderingService invoiceService,
-                        QrBillService qrBillService) {
+                        QrBillService qrBillService,
+                        ApplicationEventPublisher eventPublisher) {
         this.orderRepo = orderRepo;
         this.orderItemRepo = orderItemRepo;
         this.quoteSessionRepo = quoteSessionRepo;
@@ -51,6 +54,7 @@ public class OrderService {
         this.storageService = storageService;
         this.invoiceService = invoiceService;
         this.qrBillService = qrBillService;
+        this.eventPublisher = eventPublisher;
     }
 
     @Transactional
@@ -195,7 +199,11 @@ public class OrderService {
         // Generate Invoice and QR Bill
         generateAndSaveDocuments(order, savedItems);
         
-        return orderRepo.save(order);
+        Order savedOrder = orderRepo.save(order);
+        
+        eventPublisher.publishEvent(new OrderCreatedEvent(this, savedOrder));
+
+        return savedOrder;
     }
     
     private void generateAndSaveDocuments(Order order, List<OrderItem> items) {

backend/src/main/java/com/printcalculator/service/email/EmailNotificationService.java

@@ -0,0 +1,17 @@
+package com.printcalculator.service.email;
+
+import java.util.Map;
+
+public interface EmailNotificationService {
+
+    /**
+     * Sends an HTML email using a Thymeleaf template.
+     *
+     * @param to           The recipient email address.
+     * @param subject      The subject of the email.
+     * @param templateName The name of the Thymeleaf template (e.g., "order-confirmation").
+     * @param contextData  The data to populate the template with.
+     */
+    void sendEmail(String to, String subject, String templateName, Map<String, Object> contextData);
+
+}

backend/src/main/java/com/printcalculator/service/email/SmtpEmailNotificationService.java

@@ -0,0 +1,54 @@
+package com.printcalculator.service.email;
+
+import jakarta.mail.MessagingException;
+import jakarta.mail.internet.MimeMessage;
+import lombok.RequiredArgsConstructor;
+import lombok.extern.slf4j.Slf4j;
+import org.springframework.beans.factory.annotation.Value;
+import org.springframework.mail.javamail.JavaMailSender;
+import org.springframework.mail.javamail.MimeMessageHelper;
+import org.springframework.stereotype.Service;
+import org.thymeleaf.TemplateEngine;
+import org.thymeleaf.context.Context;
+
+import java.util.Map;
+
+@Slf4j
+@Service
+@RequiredArgsConstructor
+public class SmtpEmailNotificationService implements EmailNotificationService {
+
+    private final JavaMailSender emailSender;
+    private final TemplateEngine templateEngine;
+
+    @Value("${app.mail.from}")
+    private String fromAddress;
+
+    @Override
+    public void sendEmail(String to, String subject, String templateName, Map<String, Object> contextData) {
+        log.info("Preparing to send email to {} with template {}", to, templateName);
+
+        try {
+            Context context = new Context();
+            context.setVariables(contextData);
+
+            String process = templateEngine.process("email/" + templateName, context);
+            MimeMessage mimeMessage = emailSender.createMimeMessage();
+            MimeMessageHelper helper = new MimeMessageHelper(mimeMessage, true, "UTF-8");
+
+            helper.setFrom(fromAddress);
+            helper.setTo(to);
+            helper.setSubject(subject);
+            helper.setText(process, true); // true indicates HTML format
+
+            emailSender.send(mimeMessage);
+            log.info("Email successfully sent to {}", to);
+
+        } catch (MessagingException e) {
+            log.error("Failed to send email to {}", to, e);
+            // Non blocco l'ordine se l'email fallisce, ma loggo l'errore adeguatamente.
+        } catch (Exception e) {
+            log.error("Unexpected error while sending email to {}", to, e);
+        }
+    }
+}

backend/src/main/resources/application.properties

@@ -26,3 +26,16 @@ clamav.enabled=${CLAMAV_ENABLED:false}
 
 # TWINT Configuration
 payment.twint.url=${TWINT_PAYMENT_URL:https://go.twint.ch/1/e/tw?tw=acq.gERQQytOTnyIMuQHUqn4hlxgciHE5X7nnqHnNSPAr2OF2K3uBlXJDr2n9JU3sgxa.}
+
+# Mail Configuration
+spring.mail.host=${MAIL_HOST:mail.infomaniak.com}
+spring.mail.port=${MAIL_PORT:587}
+spring.mail.username=${MAIL_USERNAME:info@3d-fab.ch}
+spring.mail.password=${MAIL_PASSWORD:ht*44k+Tq39R+R-O}
+spring.mail.properties.mail.smtp.auth=${MAIL_SMTP_AUTH:false}
+spring.mail.properties.mail.smtp.starttls.enable=${MAIL_SMTP_STARTTLS:false}
+
+# Application Mail Settings
+app.mail.from=${APP_MAIL_FROM:noreply@printcalculator.local}
+app.mail.admin.enabled=${APP_MAIL_ADMIN_ENABLED:true}
+app.mail.admin.address=${APP_MAIL_ADMIN_ADDRESS:admin@printcalculator.local}

backend/src/main/resources/templates/email/order-confirmation.html

@@ -0,0 +1,88 @@
+<!DOCTYPE html>
+<html xmlns:th="http://www.thymeleaf.org">
+<head>
+    <meta charset="UTF-8">
+    <title>Conferma Ordine</title>
+    <style>
+        body {
+            font-family: Arial, sans-serif;
+            background-color: #f4f4f4;
+            margin: 0;
+            padding: 0;
+        }
+        .container {
+            max-width: 600px;
+            margin: 20px auto;
+            background-color: #ffffff;
+            padding: 20px;
+            border-radius: 8px;
+            box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
+        }
+        .header {
+            text-align: center;
+            border-bottom: 1px solid #eeeeee;
+            padding-bottom: 20px;
+            margin-bottom: 20px;
+        }
+        .header h1 {
+            color: #333333;
+        }
+        .content {
+            color: #555555;
+            line-height: 1.6;
+        }
+        .order-details {
+            background-color: #f9f9f9;
+            padding: 15px;
+            border-radius: 5px;
+            margin-top: 20px;
+        }
+        .order-details th {
+            text-align: left;
+            padding-right: 20px;
+            color: #333333;
+        }
+        .footer {
+            text-align: center;
+            font-size: 0.9em;
+            color: #999999;
+            margin-top: 30px;
+            border-top: 1px solid #eeeeee;
+            padding-top: 20px;
+        }
+    </style>
+</head>
+<body>
+    <div class="container">
+        <div class="header">
+            <h1>Grazie per il tuo ordine!</h1>
+        </div>
+        <div class="content">
+            <p>Ciao <span th:text="${customerName}">Cliente</span>,</p>
+            <p>Abbiamo ricevuto il tuo ordine e stiamo iniziando a elaborarlo. Ecco un riepilogo dei dettagli:</p>
+
+            <div class="order-details">
+                <table>
+                    <tr>
+                        <th>Numero Ordine:</th>
+                        <td th:text="${orderId}">#0000</td>
+                    </tr>
+                    <tr>
+                        <th>Data:</th>
+                        <td th:text="${orderDate}">01/01/2026</td>
+                    </tr>
+                    <tr>
+                        <th>Costo totale:</th>
+                        <td th:text="${totalCost} + ' CHF'">0.00 CHF</td>
+                    </tr>
+                </table>
+            </div>
+
+            <p>Se hai domande o dubbi, non esitare a contattarci.</p>
+        </div>
+        <div class="footer">
+            <p>&copy; 2026 3D-Fab. Tutti i diritti riservati.</p>
+        </div>
+    </div>
+</body>
+</html>