From 38396be256f063c852ff2c96f0beb0ba20987f79 Mon Sep 17 00:00:00 2001
From: Jonas Souza <jonasmzsouza@gmail.com>
Date: Tue, 21 May 2024 22:43:16 -0300
Subject: [PATCH] refactor: custom validation response

---
 .../in/rest/exceptions/FieldMessage.java      | 13 ++++++++++++
 .../exceptions/ResourceExceptionHandler.java  | 20 +++++++++++++++++++
 .../in/rest/exceptions/ValidationError.java   | 14 +++++++++++++
 3 files changed, 47 insertions(+)
 create mode 100644 src/main/java/br/com/fiap/grupo30/fastfood/adapters/in/rest/exceptions/FieldMessage.java
 create mode 100644 src/main/java/br/com/fiap/grupo30/fastfood/adapters/in/rest/exceptions/ValidationError.java

diff --git a/src/main/java/br/com/fiap/grupo30/fastfood/adapters/in/rest/exceptions/FieldMessage.java b/src/main/java/br/com/fiap/grupo30/fastfood/adapters/in/rest/exceptions/FieldMessage.java
new file mode 100644
index 0000000..6c10673
--- /dev/null
+++ b/src/main/java/br/com/fiap/grupo30/fastfood/adapters/in/rest/exceptions/FieldMessage.java
@@ -0,0 +1,13 @@
+package br.com.fiap.grupo30.fastfood.adapters.in.rest.exceptions;
+
+import lombok.AllArgsConstructor;
+import lombok.Data;
+import lombok.NoArgsConstructor;
+
+@Data
+@NoArgsConstructor
+@AllArgsConstructor
+public class FieldMessage {
+    private String fieldName;
+    private String message;
+}
diff --git a/src/main/java/br/com/fiap/grupo30/fastfood/adapters/in/rest/exceptions/ResourceExceptionHandler.java b/src/main/java/br/com/fiap/grupo30/fastfood/adapters/in/rest/exceptions/ResourceExceptionHandler.java
index 4a5a5bd..2b27d98 100644
--- a/src/main/java/br/com/fiap/grupo30/fastfood/adapters/in/rest/exceptions/ResourceExceptionHandler.java
+++ b/src/main/java/br/com/fiap/grupo30/fastfood/adapters/in/rest/exceptions/ResourceExceptionHandler.java
@@ -5,6 +5,8 @@
 import java.time.Instant;
 import org.springframework.http.HttpStatus;
 import org.springframework.http.ResponseEntity;
+import org.springframework.validation.FieldError;
+import org.springframework.web.bind.MethodArgumentNotValidException;
 import org.springframework.web.bind.annotation.ControllerAdvice;
 import org.springframework.web.bind.annotation.ExceptionHandler;
 
@@ -74,4 +76,22 @@ public ResponseEntity<StandardError> userCantChangeOrderAfterSubmit(
         err.setPath(request.getRequestURI());
         return ResponseEntity.status(status).body(err);
     }
+
+    @ExceptionHandler(MethodArgumentNotValidException.class)
+    public ResponseEntity<ValidationError> validation(
+            MethodArgumentNotValidException e, HttpServletRequest request) {
+        HttpStatus status = HttpStatus.UNPROCESSABLE_ENTITY;
+        ValidationError err = new ValidationError();
+        err.setTimestamp(Instant.now());
+        err.setStatus(status.value());
+        err.setError("Validation exception");
+        err.setMessage(e.getMessage());
+        err.setPath(request.getRequestURI());
+
+        for (FieldError f : e.getBindingResult().getFieldErrors()) {
+            err.addError(f.getField(), f.getDefaultMessage());
+        }
+
+        return ResponseEntity.status(status).body(err);
+    }
 }
diff --git a/src/main/java/br/com/fiap/grupo30/fastfood/adapters/in/rest/exceptions/ValidationError.java b/src/main/java/br/com/fiap/grupo30/fastfood/adapters/in/rest/exceptions/ValidationError.java
new file mode 100644
index 0000000..8325f48
--- /dev/null
+++ b/src/main/java/br/com/fiap/grupo30/fastfood/adapters/in/rest/exceptions/ValidationError.java
@@ -0,0 +1,14 @@
+package br.com.fiap.grupo30.fastfood.adapters.in.rest.exceptions;
+
+import java.util.ArrayList;
+import java.util.List;
+import lombok.Getter;
+
+@Getter
+public class ValidationError extends StandardError {
+    private final List<FieldMessage> errors = new ArrayList<>();
+
+    public void addError(String fieldName, String message) {
+        errors.add(new FieldMessage(fieldName, message));
+    }
+}