fix channel caches, add hub functions to api endpoints

packages/httpRequest/user.go

@@ -252,3 +252,37 @@ func HandleUserGetUser(response http.ResponseWriter, request *http.Request) {
 	response.WriteHeader(http.StatusAccepted)
 	response.Write(userData)
 }
+
+func HandleUserGetUsers(response http.ResponseWriter, request *http.Request) {
+	if !validCheckWithResponseOnFail(response, request, normal) {
+		return
+	}
+	ctx := request.Context()
+
+	_, err := getUserByToken(ctx, request.Header.Get("token"))
+	if err != nil {
+		http.Error(response, "invalid token", http.StatusUnauthorized)
+		return
+	}
+
+	targetIds, err := convertions.StringToUuids(request.URL.Query().Get("targetids"))
+	if err != nil {
+		http.Error(response, "invalid targetids", http.StatusBadRequest)
+		return
+	}
+
+	users, err := cache.GetUsersByIds(targetIds)
+	if err != nil {
+		http.Error(response, err.Error(), http.StatusBadRequest)
+		return
+	}
+
+	userData, err := json.Marshal(users)
+	if err != nil {
+		http.Error(response, "json parse error", http.StatusInternalServerError)
+		return
+	}
+
+	response.WriteHeader(http.StatusAccepted)
+	response.Write(userData)
+}