Using new permissions system consequently

server/src/InstanceHandler.cpp

@@ -881,4 +881,37 @@ void InstanceHandler::loadWebCertificate() {
 
     this->sslMgr->rename_context(strobf("web_default_new").string(), strobf("web_default").string());
     this->web_cert_revision = revision;
+}
+
+
+permission::v2::PermissionFlaggedValue InstanceHandler::calculate_permission(permission::PermissionType permission,
+        ClientDbId cldbid, ClientType type, ChannelId channel, bool granted, std::shared_ptr<CalculateCache> cache) {
+    auto result = this->calculate_permissions({permission}, cldbid, type, channel, granted, cache);
+    if(result.empty()) return {0, false};
+    return result.front().second;
+}
+
+std::vector<std::pair<permission::PermissionType, permission::v2::PermissionFlaggedValue> > InstanceHandler::calculate_permissions(
+        const std::deque<permission::PermissionType> &permissions, ClientDbId cldbid, ClientType type, ChannelId channel, bool granted, std::shared_ptr<CalculateCache> cache) {
+    std::vector<std::pair<permission::PermissionType, permission::v2::PermissionFlaggedValue>> result{};
+
+    //TODO: Negate?
+    //TODO: May move this part to the instance?
+
+    auto server_groups = this->getGroupManager()->getServerGroups(cldbid, type);
+    for(const auto& permission : permissions) {
+        permission::v2::PermissionFlaggedValue value{0, false};
+
+        for(const auto &gr : this->getGroupManager()->getServerGroups(cldbid, type)){
+            auto group_permissions = gr->group->permissions();
+            auto flagged_permissions = granted ? group_permissions->permission_granted_flagged(permission) : group_permissions->permission_value_flagged(permission);
+            if(flagged_permissions.has_value)
+                if(!value.has_value || flagged_permissions.value > value.value || flagged_permissions.value == -1)
+                    value = flagged_permissions;
+        }
+
+        result.emplace_back(permission, value);
+    }
+
+    return result;
 }