contact form with email

backend/src/main/java/com/petshop/backend/controller/ContactController.java

@@ -0,0 +1,40 @@
+package com.petshop.backend.controller;
+
+import com.petshop.backend.entity.User;
+import com.petshop.backend.repository.UserRepository;
+import com.petshop.backend.service.EmailService;
+import com.petshop.backend.util.AuthenticationHelper;
+import jakarta.validation.Valid;
+import jakarta.validation.constraints.NotBlank;
+import jakarta.validation.constraints.Size;
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.RequestBody;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RestController;
+
+@RestController
+@RequestMapping("/api/v1/contact")
+public class ContactController {
+
+    private final EmailService emailService;
+    private final UserRepository userRepository;
+
+    public ContactController(EmailService emailService, UserRepository userRepository) {
+        this.emailService = emailService;
+        this.userRepository = userRepository;
+    }
+
+    public record ContactRequest(
+        @NotBlank @Size(max = 150) String subject,
+        @NotBlank @Size(max = 2000) String body
+    ) {}
+
+    @PostMapping
+    public ResponseEntity<Void> sendContactEmail(@Valid @RequestBody ContactRequest req) {
+        Long userId = AuthenticationHelper.getAuthenticatedUserId();
+        User user = userRepository.findById(userId).orElseThrow();
+        emailService.sendContactMessage(user, req.subject(), req.body());
+        return ResponseEntity.ok().build();
+    }
+}

backend/src/main/java/com/petshop/backend/service/EmailService.java

@@ -129,6 +129,19 @@ public class EmailService {
         }
     }
 
+    public void sendContactMessage(User user, String subject, String body) {
+        if (user.getEmail() == null || user.getEmail().isBlank()) return;
+        String html = """
+                <div style="font-family:sans-serif;max-width:600px;margin:auto">
+                  <h2>Contact form message</h2>
+                  <p><strong>From:</strong> %s (%s)</p>
+                  <p><strong>Subject:</strong> %s</p>
+                  <hr/>
+                  <p style="white-space:pre-wrap">%s</p>
+                </div>""".formatted(esc(firstName(user)), esc(user.getEmail()), esc(subject), esc(body));
+        send(user.getId(), user.getEmail(), "Contact: " + subject, html);
+    }
+
     public void sendChatTranscript(Conversation conversation, List<Message> messages, User customer) {
         if (customer == null || customer.getEmail() == null || customer.getEmail().isBlank()) return;
         String subject = "Your PetShop support transcript";