fix: challenge 7 (#1433)

src/main/java/org/owasp/webgoat/webwolf/mailbox/MailboxController.java

@@ -23,26 +23,27 @@
 package org.owasp.webgoat.webwolf.mailbox;
 
 import java.util.List;
-import lombok.AllArgsConstructor;
+import lombok.RequiredArgsConstructor;
 import lombok.extern.slf4j.Slf4j;
 import org.springframework.http.HttpStatus;
-import org.springframework.http.ResponseEntity;
 import org.springframework.security.core.context.SecurityContextHolder;
 import org.springframework.security.core.userdetails.UserDetails;
+import org.springframework.web.bind.annotation.DeleteMapping;
 import org.springframework.web.bind.annotation.GetMapping;
 import org.springframework.web.bind.annotation.PostMapping;
 import org.springframework.web.bind.annotation.RequestBody;
+import org.springframework.web.bind.annotation.ResponseStatus;
 import org.springframework.web.bind.annotation.RestController;
 import org.springframework.web.servlet.ModelAndView;
 
 @RestController
-@AllArgsConstructor
+@RequiredArgsConstructor
 @Slf4j
 public class MailboxController {
 
   private final MailboxRepository mailboxRepository;
 
-  @GetMapping(value = "/mail")
+  @GetMapping("/mail")
   public ModelAndView mail() {
     UserDetails user =
         (UserDetails) SecurityContextHolder.getContext().getAuthentication().getPrincipal();
@@ -56,9 +57,15 @@ public class MailboxController {
     return modelAndView;
   }
 
-  @PostMapping(value = "/mail")
-  public ResponseEntity<?> sendEmail(@RequestBody Email email) {
+  @PostMapping("/mail")
+  @ResponseStatus(HttpStatus.CREATED)
+  public void sendEmail(@RequestBody Email email) {
     mailboxRepository.save(email);
-    return ResponseEntity.status(HttpStatus.CREATED).build();
+  }
+
+  @DeleteMapping("/mail")
+  @ResponseStatus(HttpStatus.ACCEPTED)
+  public void deleteAllMail() {
+    mailboxRepository.deleteAll();
   }
 }