first week launch

walkguide-backend/demo/src/main/java/com/walkguide/exception/GlobalExceptionHandler.java

@@ -0,0 +1,27 @@
+package com.walkguide.exception;
+
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.bind.MethodArgumentNotValidException;
+import org.springframework.web.bind.annotation.ControllerAdvice;
+import org.springframework.web.bind.annotation.ExceptionHandler;
+
+import com.walkguide.dto.ApiResponse;
+
+@ControllerAdvice
+public class GlobalExceptionHandler {
+
+    // Nangkep error kalau login gagal / user gak ketemu
+    @ExceptionHandler(RuntimeException.class)
+    public ResponseEntity<ApiResponse<Object>> handleRuntimeException(RuntimeException ex) {
+        ApiResponse<Object> response = new ApiResponse<>(false, "AUTH_ERROR", ex.getMessage());
+        return ResponseEntity.status(401).body(response);
+    }
+
+    // Nangkep error dari Validasi (misal email format salah)
+    @ExceptionHandler(MethodArgumentNotValidException.class)
+    public ResponseEntity<ApiResponse<Object>> handleValidationException(MethodArgumentNotValidException ex) {
+        String errorMsg = ex.getBindingResult().getAllErrors().get(0).getDefaultMessage();
+        ApiResponse<Object> response = new ApiResponse<>(false, "VALIDATION_ERROR", errorMsg);
+        return ResponseEntity.status(400).body(response);
+    }
+}