Serialize and deserialize from gin correctly

examples/gin-compat/main.go

@@ -2,6 +2,7 @@ package main
 
 import (
 	"context"
+	"errors"
 	"fmt"
 	"strings"
 
@@ -90,9 +91,14 @@ func (h *HelloRequest) InTransform(ctx context.Context) error {
 	// Transformation
 	h.Word = strings.ToLower(h.Word)
 
-	// Custom validation
+	// Custom validation, with fuego provided error
 	if h.Word == "apple" {
-		return fuego.BadRequestError{Title: "Please don't use the word 'apple'"}
+		return fuego.BadRequestError{Title: "Word not allowed", Err: errors.New("forbidden word"), Detail: "The word 'apple' is not allowed"}
+	}
+
+	// Custom validation, with basic error
+	if h.Word == "banana" {
+		return errors.New("banana is not allowed")
 	}
 
 	// Context-based transformation

extra/fuegogin/context.go

@@ -2,6 +2,7 @@ package fuegogin
 
 import (
 	"context"
+	"errors"
 	"net/http"
 	"strings"
 
@@ -102,12 +103,27 @@ func (c ginContext[B]) SetStatus(code int) {
 }
 
 func (c ginContext[B]) Serialize(data any) error {
-	c.ginCtx.JSON(http.StatusOK, data)
+	if c.DefaultStatusCode == 0 {
+		c.DefaultStatusCode = http.StatusOK
+	}
+	status := c.ginCtx.Writer.Status()
+	if status == 0 {
+		status = c.DefaultStatusCode
+	}
+	if status == 0 {
+		status = 200
+	}
+	c.ginCtx.JSON(status, data)
 	return nil
 }
 
 func (c ginContext[B]) SerializeError(err error) {
-	c.ginCtx.JSON(http.StatusInternalServerError, err)
+	statusCode := http.StatusInternalServerError
+	var errorWithStatusCode fuego.ErrorWithStatus
+	if errors.As(err, &errorWithStatusCode) {
+		statusCode = errorWithStatusCode.StatusCode()
+	}
+	c.ginCtx.JSON(statusCode, err)
 }
 
 func (c ginContext[B]) SetDefaultStatusCode() {