add custom exception handler

Author: rubenmodamio

src/main/java/es/in2/vcverifier/exception/ResourceNotFoundException.java

@@ -0,0 +1,9 @@
+package es.in2.vcverifier.exception;
+
+public class ResourceNotFoundException extends RuntimeException {
+
+    public ResourceNotFoundException(String message) {
+        super(message);
+    }
+
+}

src/main/java/es/in2/vcverifier/exception/handler/CustomExceptionHandler.java

@@ -0,0 +1,22 @@
+package es.in2.vcverifier.exception.handler;
+
+import es.in2.vcverifier.exception.ResourceNotFoundException;
+import org.springframework.http.HttpStatus;
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.bind.annotation.ControllerAdvice;
+import org.springframework.web.bind.annotation.ExceptionHandler;
+
+@ControllerAdvice
+public class CustomExceptionHandler {
+
+    @ExceptionHandler(ResourceNotFoundException.class)
+    public ResponseEntity<String> handleResourceNotFoundException(ResourceNotFoundException ex) {
+        return ResponseEntity.status(HttpStatus.NOT_FOUND).body(ex.getMessage());
+    }
+
+    @ExceptionHandler(Exception.class)
+    public ResponseEntity<String> handleException(Exception ex) {
+        return ResponseEntity.status(HttpStatus.INTERNAL_SERVER_ERROR).body("An unexpected error occurred: " + ex.getMessage());
+    }
+}
+

src/main/java/es/in2/vcverifier/oid4vp/controller/Oid4vpController.java

@@ -1,6 +1,7 @@
 package es.in2.vcverifier.oid4vp.controller;
 
 import es.in2.vcverifier.config.CacheStore;
+import es.in2.vcverifier.exception.ResourceNotFoundException;
 import es.in2.vcverifier.model.AuthorizationRequestJWT;
 import es.in2.vcverifier.oid4vp.service.AuthorizationResponseProcessorService;
 import jakarta.servlet.http.HttpServletResponse;
@@ -29,12 +30,9 @@ public ResponseEntity<String> getAuthorizationRequest(@PathVariable String id) {
         String jwt = authorizationRequestJWT.authRequest();
 
         if (jwt != null) {
-            // Si el JWT existe en la caché, lo devolvemos en la respuesta
             return ResponseEntity.ok(jwt);
         } else {
-            // Si no se encuentra el JWT, devolvemos un error 404
-            return ResponseEntity.status(HttpStatus.NOT_FOUND)
-                    .body("JWT not found for id: " + id);
+            throw new ResourceNotFoundException("JWT not found for id: " + id);
         }
     }