dev/codeforces/ Добавил ControllerAdvice для Codeforces Exceptions

Author: AlexanderGarifullin

src/main/java/com/cf/cfteam/advicers/codeforces/CodeforcesExceptionHandler.java

@@ -0,0 +1,37 @@
+package com.cf.cfteam.advicers.codeforces;
+
+import com.cf.cfteam.exceptions.codeforces.GroupNotFoundException;
+import com.cf.cfteam.exceptions.security.UserNotFoundException;
+import jakarta.validation.GroupDefinitionException;
+import org.springframework.http.HttpStatus;
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.bind.annotation.ControllerAdvice;
+import org.springframework.web.bind.annotation.ExceptionHandler;
+
+import java.time.LocalDateTime;
+import java.util.HashMap;
+import java.util.Map;
+
+@ControllerAdvice
+public class CodeforcesExceptionHandler {
+    private static final String ID = "id";
+
+    @ExceptionHandler(GroupNotFoundException.class)
+    public ResponseEntity<Object> handleUserNotFoundException(GroupNotFoundException ex) {
+        return buildErrorResponse(ex.getMessage(), HttpStatus.NOT_FOUND, Map.of(ID, ex.getId()));
+    }
+
+    private ResponseEntity<Object> buildErrorResponse(String message, HttpStatus status, Map<String, Object> details) {
+        Map<String, Object> errorResponse = new HashMap<>();
+        errorResponse.put("timestamp", LocalDateTime.now());
+        errorResponse.put("status", status.value());
+        errorResponse.put("error", status.getReasonPhrase());
+        errorResponse.put("message", message);
+
+        if (details != null) {
+            errorResponse.put("details", details);
+        }
+
+        return new ResponseEntity<>(errorResponse, status);
+    }
+}