Use cookies saved server side (#188)

* retrieve cookies stored server side

fixed netscape cookies validation pipeline

* code refactoring

server/rest/handlers.go

@@ -60,6 +60,27 @@ func (h *Handler) Running() http.HandlerFunc {
 	}
 }
 
+func (h *Handler) GetCookies() http.HandlerFunc {
+	return func(w http.ResponseWriter, r *http.Request) {
+		w.Header().Set("Content-Type", "application/json")
+
+		cookies, err := h.service.GetCookies(r.Context())
+		if err != nil {
+			http.Error(w, err.Error(), http.StatusInternalServerError)
+			return
+		}
+
+		res := &internal.SetCookiesRequest{
+			Cookies: string(cookies),
+		}
+
+		if err := json.NewEncoder(w).Encode(res); err != nil {
+			http.Error(w, err.Error(), http.StatusInternalServerError)
+			return
+		}
+	}
+}
+
 func (h *Handler) SetCookies() http.HandlerFunc {
 	return func(w http.ResponseWriter, r *http.Request) {
 		defer r.Body.Close()
@@ -87,6 +108,23 @@ func (h *Handler) SetCookies() http.HandlerFunc {
 	}
 }
 
+func (h *Handler) DeleteCookies() http.HandlerFunc {
+	return func(w http.ResponseWriter, r *http.Request) {
+		w.Header().Set("Content-Type", "application/json")
+
+		err := h.service.SetCookies(r.Context(), "")
+		if err != nil {
+			http.Error(w, err.Error(), http.StatusInternalServerError)
+			return
+		}
+
+		err = json.NewEncoder(w).Encode("ok")
+		if err != nil {
+			http.Error(w, err.Error(), http.StatusInternalServerError)
+		}
+	}
+}
+
 func (h *Handler) AddTemplate() http.HandlerFunc {
 	return func(w http.ResponseWriter, r *http.Request) {
 		defer r.Body.Close()