✨ Add options, mostly transformers

options.go

@@ -0,0 +1,41 @@
+package handler
+
+import (
+	"errors"
+
+	rErrors "codeberg.org/danjones000/responsable-errors"
+	"github.com/gin-gonic/gin"
+)
+
+type config struct {
+	transformers []Transformer
+}
+
+type Transformer func(error) rErrors.ResponsableError
+
+type Option func(config) config
+
+func WithTransformer(tr Transformer) Option {
+	return func(c config) config {
+		c.transformers = append(c.transformers, tr)
+		return c
+	}
+}
+
+func WithDefaultTransformer() Option {
+	return WithTransformer(ginTransformer)
+}
+
+func ginTransformer(er error) rErrors.ResponsableError {
+	var err *gin.Error
+	if !errors.As(er, &err) {
+		return nil
+	}
+
+	switch err.Type {
+	case gin.ErrorTypePrivate:
+		return rErrors.NewInternalError("%w", err)
+	default:
+		return rErrors.NewBadRequest("%w", err)
+	}
+}