Optimize user model construction by 2.5x

src/Cache.cpp

@@ -3196,8 +3196,11 @@ Cache::getMembers(const std::string &room_id, std::size_t startIndex, std::size_
 
             try {
                 MemberInfo tmp = nlohmann::json::parse(user_data).get<MemberInfo>();
-                members.emplace_back(RoomMember{QString::fromStdString(std::string(user_id)),
-                                                QString::fromStdString(tmp.name)});
+                members.emplace_back(RoomMember{
+                  QString::fromStdString(std::string(user_id)),
+                  QString::fromStdString(tmp.name),
+                  QString::fromStdString(tmp.avatar_url),
+                });
             } catch (const nlohmann::json::exception &e) {
                 nhlog::db()->warn("{}", e.what());
             }
@@ -3263,9 +3266,12 @@ Cache::getMembersFromInvite(const std::string &room_id, std::size_t startIndex,
 
             try {
                 MemberInfo tmp = nlohmann::json::parse(user_data).get<MemberInfo>();
-                members.emplace_back(RoomMember{QString::fromStdString(std::string(user_id)),
-                                                QString::fromStdString(tmp.name),
-                                                tmp.is_direct});
+                members.emplace_back(RoomMember{
+                  QString::fromStdString(std::string(user_id)),
+                  QString::fromStdString(tmp.name),
+                  QString::fromStdString(tmp.avatar_url),
+                  tmp.is_direct,
+                });
             } catch (const nlohmann::json::exception &e) {
                 nhlog::db()->warn("{}", e.what());
             }

src/CacheStructs.h

@@ -28,6 +28,7 @@ struct RoomMember
 {
     QString user_id;
     QString display_name;
+    QString avatar_url;
     bool is_direct = false;
 };
 

src/UsersModel.cpp

@@ -34,12 +34,15 @@ UsersModel::UsersModel(const std::string &roomId, QObject *parent)
             }
         }
     } else {
-        for (const auto &m : cache::roomMembers(roomId)) {
-            displayNames.push_back(QString::fromStdString(cache::displayName(room_id, m)));
-            userids.push_back(QString::fromStdString(m));
-            avatarUrls.push_back(
-              cache::avatarUrl(QString::fromStdString(room_id), QString::fromStdString(m)));
+        const auto start_at = std::chrono::steady_clock::now();
+        for (const auto &m : cache::getMembers(roomId, 0, -1)) {
+            displayNames.push_back(m.display_name);
+            userids.push_back(m.user_id);
+            avatarUrls.push_back(m.avatar_url);
         }
+        const auto end_at     = std::chrono::steady_clock::now();
+        const auto build_time = std::chrono::duration<double, std::milli>(end_at - start_at);
+        nhlog::ui()->debug("UsersModel: build data: {} ms", build_time.count());
     }
 }