Initial QSfera import

Server/services/graph/pkg/service/v0/data.go

@@ -0,0 +1,42 @@
+package svc
+
+import (
+	"errors"
+	"fmt"
+	"net/http"
+	"net/url"
+
+	"github.com/go-chi/chi/v5"
+	revactx "github.com/opencloud-eu/reva/v2/pkg/ctx"
+
+	"github.com/qsfera/server/services/graph/pkg/errorcode"
+)
+
+// HTTPDataHandler returns data from the request, it should exit early and return false in the case of any error
+type HTTPDataHandler[T any] func(w http.ResponseWriter, r *http.Request) (T, bool)
+
+var (
+	// ErrNoUser is returned when no user is found
+	ErrNoUser = errors.New("no user found")
+)
+
+// GetUserIDFromCTX extracts the user from the request
+func GetUserIDFromCTX(w http.ResponseWriter, r *http.Request) (string, bool) {
+	u, ok := revactx.ContextGetUser(r.Context())
+	if !ok {
+		errorcode.GeneralException.Render(w, r, http.StatusMethodNotAllowed, ErrNoUser.Error())
+	}
+
+	return u.GetId().GetOpaqueId(), ok
+}
+
+func GetSlugValue(key string) HTTPDataHandler[string] {
+	return func(w http.ResponseWriter, r *http.Request) (string, bool) {
+		v, err := url.PathUnescape(chi.URLParam(r, key))
+		if err != nil {
+			errorcode.GeneralException.Render(w, r, http.StatusInternalServerError, fmt.Sprintf(`failed to get slug: "%s"`, key))
+		}
+
+		return v, err == nil
+	}
+}