feat: domain finished

api/middleware/validate.go

@@ -0,0 +1,29 @@
+package middleware
+
+import (
+	"context"
+	"encoding/json"
+	"github.com/eminetto/clean-architecture-go/pkg/entity"
+	"net/http"
+	"github.com/codegangsta/negroni"
+)
+
+//Validate
+func Validate(e entity.Validable) negroni.HandlerFunc {
+	return func(w http.ResponseWriter, r *http.Request, next http.HandlerFunc) {
+		err := json.NewDecoder(r.Body).Decode(&e)
+		if err != nil {
+			w.WriteHeader(http.StatusBadRequest)
+			w.Write([]byte(err.Error()))
+			return
+		}
+		err = e.Validate()
+		if err != nil {
+			w.WriteHeader(http.StatusBadRequest)
+			w.Write([]byte(err.Error()))
+			return
+		}
+		ctx := context.WithValue(r.Context(), "InputParam", e)
+		next(w, r.WithContext(ctx))
+	}
+}