When joining a channel, send the most recent history found in the database

src/bridge/bridge.cpp

@@ -744,6 +744,26 @@ void Bridge::send_topic(const std::string& hostname, const std::string& chan_nam
 
 }
 
+void Bridge::send_room_history(const std::string& hostname, const std::string& chan_name)
+{
+  for (const auto& resource: this->resources_in_chan[ChannelKey{chan_name, hostname}])
+    this->send_room_history(hostname, chan_name, resource);
+}
+
+void Bridge::send_room_history(const std::string& hostname, const std::string& chan_name, const std::string& resource)
+{
+#ifdef USE_DATABASE
+  const auto coptions = Database::get_irc_channel_options_with_server_and_global_default(this->user_jid, hostname, chan_name);
+  const auto lines = Database::get_muc_logs(this->user_jid, chan_name, hostname, coptions.maxHistoryLength.value());
+  for (const auto& line: lines)
+    {
+      const auto seconds = line.date.value().timeStamp();
+      this->xmpp.send_history_message(chan_name + "%" + hostname, line.nick.value(), line.body.value(),
+                                      this->user_jid + "/" + resource, seconds);
+    }
+#endif
+}
+
 std::string Bridge::get_own_nick(const Iid& iid)
 {
   IrcClient* irc = this->find_irc_client(iid.get_server());