Always return the oldest matching messages from MAM, even if no date is set

src/bridge/bridge.cpp

@@ -1020,7 +1020,7 @@ void Bridge::send_room_history(const std::string& hostname, std::string chan_nam
   auto limit = coptions.col<Database::MaxHistoryLength>();
   if (history_limit.stanzas >= 0 && history_limit.stanzas < limit)
     limit = history_limit.stanzas;
-  const auto lines = Database::get_muc_logs(this->user_jid, chan_name, hostname, limit, history_limit.since);
+  const auto lines = Database::get_muc_most_recent_logs(this->user_jid, chan_name, hostname, limit, history_limit.since);
   chan_name.append(utils::empty_if_fixed_server("%" + hostname));
   for (const auto& line: lines)
     {

src/database/database.cpp

@@ -185,13 +185,36 @@ std::vector<Database::MucLogLine> Database::get_muc_logs(const std::string& owne
         request << " and " << Database::Date{} << "<=" << end_time;
     }
 
+  if (limit >= 0)
+    request.limit() << limit;
+
+  auto result = request.execute(*Database::db);
+
+  return {result.cbegin(), result.cend()};
+}
+
+std::vector<Database::MucLogLine> Database::get_muc_most_recent_logs(const std::string& owner, const std::string& chan_name, const std::string& server,
+                                                                     int limit, const std::string& start)
+{
+  auto request = Database::muc_log_lines.select();
+  request.where() << Database::Owner{} << "=" << owner << \
+          " and " << Database::IrcChanName{} << "=" << chan_name << \
+          " and " << Database::IrcServerName{} << "=" << server;
+
+  if (!start.empty())
+    {
+      const auto start_time = utils::parse_datetime(start);
+      if (start_time != -1)
+        request << " and " << Database::Date{} << ">=" << start_time;
+    }
+
   request.order_by() << Id{} << " DESC ";
 
   if (limit >= 0)
     request.limit() << limit;
 
   auto result = request.execute(*Database::db);
-
+  
   return {result.crbegin(), result.crend()};
 }
 

src/database/database.hpp

@@ -118,8 +118,17 @@ class Database
   static IrcChannelOptions get_irc_channel_options_with_server_and_global_default(const std::string& owner,
                                                                                   const std::string& server,
                                                                                   const std::string& channel);
+  /**
+   * Get all the lines between (optional) start and end dates, with a (optional) limit.
+   */
   static std::vector<MucLogLine> get_muc_logs(const std::string& owner, const std::string& chan_name, const std::string& server,
                                               int limit=-1, const std::string& start="", const std::string& end="");
+
+  /**
+   * Get the most recent messages from the archive, with optional limit and start date
+   */
+  static std::vector<MucLogLine> get_muc_most_recent_logs(const std::string& owner, const std::string& chan_name, const std::string& server,
+                                              int limit=-1, const std::string& start="");
   static std::string store_muc_message(const std::string& owner, const std::string& chan_name, const std::string& server_name,
                                        time_point date, const std::string& body, const std::string& nick);
 

src/xmpp/biboumi_component.cpp

@@ -721,7 +721,7 @@ bool BiboumiComponent::handle_mam_request(const Stanza& stanza)
             if (max)
               limit = std::atoi(max->get_inner().data());
           }
-        // Do send more than 100 messages, even if the client asked for more,
+        // Do not send more than 100 messages, even if the client asked for more,
         // or if it didn’t specify any limit.
         // 101 is just a trick to know if there are more available messages.
         // If our query returns 101 message, we know it’s incomplete, but we