diff --git a/src/RoomDirectoryModel.cpp b/src/RoomDirectoryModel.cpp
new file mode 100644
index 00000000..707571d6
--- /dev/null
+++ b/src/RoomDirectoryModel.cpp
@@ -0,0 +1,216 @@
+// SPDX-FileCopyrightText: 2021 Nheko Contributors
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#include "RoomDirectoryModel.h"
+#include "Cache.h"
+#include "ChatPage.h"
+
+#include <algorithm>
+
+RoomDirectoryModel::RoomDirectoryModel(QObject *parent, const std::string &server)
+ : QAbstractListModel(parent)
+ , server_(server)
+{
+ connect(ChatPage::instance(), &ChatPage::newRoom, this, [this](const QString &roomid) {
+ auto roomid_ = roomid.toStdString();
+
+ int i = 0;
+ for (const auto &room : publicRoomsData_) {
+ if (room.room_id == roomid_) {
+ emit dataChanged(index(i), index(i), {Roles::CanJoin});
+ break;
+ }
+ i++;
+ }
+ });
+
+ connect(this,
+ &RoomDirectoryModel::fetchedRoomsBatch,
+ this,
+ &RoomDirectoryModel::displayRooms,
+ Qt::QueuedConnection);
+}
+
+QHash<int, QByteArray>
+RoomDirectoryModel::roleNames() const
+{
+ return {
+ {Roles::Name, "name"},
+ {Roles::Id, "roomid"},
+ {Roles::AvatarUrl, "avatarUrl"},
+ {Roles::Topic, "topic"},
+ {Roles::MemberCount, "numMembers"},
+ {Roles::Previewable, "canPreview"},
+ {Roles::CanJoin, "canJoin"},
+ };
+}
+
+void
+RoomDirectoryModel::resetDisplayedData()
+{
+ beginResetModel();
+
+ prevBatch_ = "";
+ nextBatch_ = "";
+ canFetchMore_ = true;
+
+ publicRoomsData_.clear();
+
+ endResetModel();
+}
+
+void
+RoomDirectoryModel::setMatrixServer(const QString &s)
+{
+ server_ = s.toStdString();
+
+ nhlog::ui()->debug("Received matrix server: {}", server_);
+
+ resetDisplayedData();
+}
+
+void
+RoomDirectoryModel::setSearchTerm(const QString &f)
+{
+ userSearchString_ = f.toStdString();
+
+ nhlog::ui()->debug("Received user query: {}", userSearchString_);
+
+ resetDisplayedData();
+}
+
+bool
+RoomDirectoryModel::canJoinRoom(const QString &room) const
+{
+ return !room.isEmpty() && cache::getRoomInfo({room.toStdString()}).empty();
+}
+
+std::vector<std::string>
+RoomDirectoryModel::getViasForRoom(const std::vector<std::string> &aliases)
+{
+ std::vector<std::string> vias;
+
+ vias.reserve(aliases.size());
+
+ std::transform(aliases.begin(), aliases.end(), std::back_inserter(vias), [](const auto &alias) {
+ return alias.substr(alias.find(":") + 1);
+ });
+
+ // When joining a room hosted on a homeserver other than the one the
+ // account has been registered on, the room's server has to be explicitly
+ // specified in the "server_name=..." URL parameter of the Matrix Join Room
+ // request. For more details consult the specs:
+ // https://matrix.org/docs/spec/client_server/r0.6.1#post-matrix-client-r0-join-roomidoralias
+ if (!server_.empty()) {
+ vias.push_back(server_);
+ }
+
+ return vias;
+}
+
+void
+RoomDirectoryModel::joinRoom(const int &index)
+{
+ if (index >= 0 && static_cast<size_t>(index) < publicRoomsData_.size()) {
+ const auto &chunk = publicRoomsData_[index];
+ nhlog::ui()->debug("'Joining room {}", chunk.room_id);
+ ChatPage::instance()->joinRoomVia(chunk.room_id, getViasForRoom(chunk.aliases));
+ }
+}
+
+QVariant
+RoomDirectoryModel::data(const QModelIndex &index, int role) const
+{
+ if (hasIndex(index.row(), index.column(), index.parent())) {
+ const auto &room_chunk = publicRoomsData_[index.row()];
+ switch (role) {
+ case Roles::Name:
+ return QString::fromStdString(room_chunk.name);
+ case Roles::Id:
+ return QString::fromStdString(room_chunk.room_id);
+ case Roles::AvatarUrl:
+ return QString::fromStdString(room_chunk.avatar_url);
+ case Roles::Topic:
+ return QString::fromStdString(room_chunk.topic);
+ case Roles::MemberCount:
+ return QVariant::fromValue(room_chunk.num_joined_members);
+ case Roles::Previewable:
+ return QVariant::fromValue(room_chunk.world_readable);
+ case Roles::CanJoin:
+ return canJoinRoom(QString::fromStdString(room_chunk.room_id));
+ }
+ }
+ return {};
+}
+
+void
+RoomDirectoryModel::fetchMore(const QModelIndex &)
+{
+ if (!canFetchMore_)
+ return;
+
+ nhlog::net()->debug("Fetching more rooms from mtxclient...");
+
+ mtx::requests::PublicRooms req;
+ req.limit = limit_;
+ req.since = prevBatch_;
+ req.filter.generic_search_term = userSearchString_;
+ // req.third_party_instance_id = third_party_instance_id;
+ auto requested_server = server_;
+
+ reachedEndOfPagination_ = false;
+ emit reachedEndOfPaginationChanged();
+
+ loadingMoreRooms_ = true;
+ emit loadingMoreRoomsChanged();
+
+ http::client()->post_public_rooms(
+ req,
+ [requested_server, this, req](const mtx::responses::PublicRooms &res,
+ mtx::http::RequestErr err) {
+ loadingMoreRooms_ = false;
+ emit loadingMoreRoomsChanged();
+
+ if (err) {
+ nhlog::net()->error("Failed to retrieve rooms from mtxclient - {} - {} - {}",
+ mtx::errors::to_string(err->matrix_error.errcode),
+ err->matrix_error.error,
+ err->parse_error);
+ } else if (req.filter.generic_search_term == this->userSearchString_ &&
+ req.since == this->prevBatch_ && requested_server == this->server_) {
+ nhlog::net()->debug("signalling chunk to GUI thread");
+ emit fetchedRoomsBatch(res.chunk, res.next_batch);
+ }
+ },
+ requested_server);
+}
+
+void
+RoomDirectoryModel::displayRooms(std::vector<mtx::responses::PublicRoomsChunk> fetched_rooms,
+ const std::string &next_batch)
+{
+ nhlog::net()->debug("Prev batch: {} | Next batch: {}", prevBatch_, next_batch);
+
+ if (fetched_rooms.empty()) {
+ nhlog::net()->error("mtxclient helper thread yielded empty chunk!");
+ return;
+ }
+
+ beginInsertRows(QModelIndex(),
+ static_cast<int>(publicRoomsData_.size()),
+ static_cast<int>(publicRoomsData_.size() + fetched_rooms.size()) - 1);
+ this->publicRoomsData_.insert(
+ this->publicRoomsData_.end(), fetched_rooms.begin(), fetched_rooms.end());
+ endInsertRows();
+
+ if (next_batch.empty()) {
+ canFetchMore_ = false;
+ reachedEndOfPagination_ = true;
+ emit reachedEndOfPaginationChanged();
+ }
+
+ prevBatch_ = next_batch;
+
+ nhlog::ui()->debug("Finished loading rooms");
+}
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