removed intermediate /internal directory

server/response/handler.go

@@ -0,0 +1,26 @@
+package response
+
+import (
+	"github.com/gin-gonic/gin"
+)
+
+type (
+	HandlerFunc = func(c *gin.Context) (Response, error)
+
+	Middleware = func(HandlerFunc) HandlerFunc
+
+	responseKey struct{}
+)
+
+func Handler(f HandlerFunc) gin.HandlerFunc {
+	return func(c *gin.Context) {
+		res, err := f(c)
+		if err != nil {
+			c.Error(err)
+			c.Abort()
+		} else if res != nil {
+			c.Set(responseKey{}, res)
+			c.Abort()
+		}
+	}
+}