Handle nick changes, both ways

src/bridge/bridge.cpp

@@ -59,10 +59,15 @@ IrcClient* Bridge::get_irc_client(const std::string& hostname)
     }
 }
 
-void Bridge::join_irc_channel(const Iid& iid, const std::string& username)
+bool Bridge::join_irc_channel(const Iid& iid, const std::string& username)
 {
   IrcClient* irc = this->get_irc_client(iid.server, username);
-  irc->send_join_command(iid.chan);
+  if (irc->is_channel_joined(iid.chan) == false)
+    {
+      irc->send_join_command(iid.chan);
+      return true;
+    }
+  return false;
 }
 
 void Bridge::send_channel_message(const Iid& iid, const std::string& body)
@@ -103,6 +108,13 @@ void Bridge::leave_irc_channel(Iid&& iid, std::string&& status_message)
     irc->send_part_command(iid.chan, status_message);
 }
 
+void Bridge::send_irc_nick_change(const Iid& iid, const std::string& new_nick)
+{
+  IrcClient* irc = this->get_irc_client(iid.server);
+  if (irc)
+    irc->send_nick_command(new_nick);
+}
+
 void Bridge::send_message(const Iid& iid, const std::string& nick, const std::string& body, const bool muc)
 {
   std::string utf8_body = this->sanitize_for_xmpp(body);
@@ -118,11 +130,17 @@ void Bridge::send_message(const Iid& iid, const std::string& nick, const std::st
     this->xmpp->send_message(iid.chan + "%" + iid.server, utf8_body, this->user_jid);
 }
 
-void Bridge::send_muc_leave(Iid&& iid, std::string&& nick, std::string&& message, const bool self)
+void Bridge::send_muc_leave(Iid&& iid, std::string&& nick, const std::string& message, const bool self)
 {
   this->xmpp->send_muc_leave(std::move(iid.chan) + "%" + std::move(iid.server), std::move(nick), this->sanitize_for_xmpp(message), this->user_jid, self);
 }
 
+void Bridge::send_nick_change(Iid&& iid, const std::string& old_nick, const std::string& new_nick, const bool self)
+{
+  this->xmpp->send_nick_change(std::move(iid.chan) + "%" + std::move(iid.server),
+                               old_nick, new_nick, this->user_jid, self);
+}
+
 void Bridge::send_xmpp_message(const std::string& from, const std::string& author, const std::string& msg)
 {
   std::string body;
@@ -147,3 +165,11 @@ void Bridge::send_topic(const std::string& hostname, const std::string& chan_nam
 {
   this->xmpp->send_topic(chan_name + "%" + hostname, this->sanitize_for_xmpp(topic), this->user_jid);
 }
+
+std::string Bridge::get_own_nick(const Iid& iid)
+{
+  IrcClient* irc = this->get_irc_client(iid.server);
+  if (irc)
+    return irc->get_own_nick();
+  return "";
+}

src/bridge/bridge.hpp

@@ -30,10 +30,15 @@ public:
    **
    **/
 
-  void join_irc_channel(const Iid& iid, const std::string& username);
+  /**
+   * Try to join an irc_channel, does nothing and return true if the channel
+   * was already joined.
+   */
+  bool join_irc_channel(const Iid& iid, const std::string& username);
   void send_channel_message(const Iid& iid, const std::string& body);
   void send_private_message(const Iid& iid, const std::string& body);
   void leave_irc_channel(Iid&& iid, std::string&& status_message);
+  void send_irc_nick_change(const Iid& iid, const std::string& new_nick);
 
   /***
    **
@@ -65,7 +70,17 @@ public:
   /**
    * Send an unavailable presence from this participant
    */
-  void send_muc_leave(Iid&& iid, std::string&& nick, std::string&& message, const bool self);
+  void send_muc_leave(Iid&& iid, std::string&& nick, const std::string& message, const bool self);
+  /**
+   * Send presences to indicate that an user old_nick (ourself if self ==
+   * true) changed his nick to new_nick
+   */
+  void send_nick_change(Iid&& iid, const std::string& old_nick, const std::string& new_nick, const bool self);
+
+  /**
+   * Misc
+   */
+  std::string get_own_nick(const Iid& iid);
 
 private:
   /**