added settings to show part and join messages

src/providers/twitch/ircmessagehandler.cpp

@@ -246,6 +246,26 @@ void IrcMessageHandler::handleWriteConnectionNoticeMessage(Communi::IrcNoticeMes
     this->handleNoticeMessage(message);
 }
 
+void IrcMessageHandler::handleJoinMessage(Communi::IrcMessage *message)
+{
+    auto app = getApp();
+    auto channel = app->twitch.server->getChannelOrEmpty(message->parameter(0).remove(0, 1));
+
+    if (TwitchChannel *twitchChannel = dynamic_cast<TwitchChannel *>(channel.get())) {
+        twitchChannel->addJoinedUser(message->nick());
+    }
+}
+
+void IrcMessageHandler::handlePartMessage(Communi::IrcMessage *message)
+{
+    auto app = getApp();
+    auto channel = app->twitch.server->getChannelOrEmpty(message->parameter(0).remove(0, 1));
+
+    if (TwitchChannel *twitchChannel = dynamic_cast<TwitchChannel *>(channel.get())) {
+        twitchChannel->addPartedUser(message->nick());
+    }
+}
+
 }  // namespace twitch
 }  // namespace providers
 }  // namespace chatterino

src/providers/twitch/ircmessagehandler.hpp

@@ -21,6 +21,9 @@ public:
     void handleModeMessage(Communi::IrcMessage *message);
     void handleNoticeMessage(Communi::IrcNoticeMessage *message);
     void handleWriteConnectionNoticeMessage(Communi::IrcNoticeMessage *message);
+
+    void handleJoinMessage(Communi::IrcMessage *message);
+    void handlePartMessage(Communi::IrcMessage *message);
 };
 
 }  // namespace twitch

src/providers/twitch/twitchchannel.cpp

@@ -213,6 +213,58 @@ void TwitchChannel::addRecentChatter(const std::shared_ptr<messages::Message> &m
     this->completionModel.addUser(message->displayName);
 }
 
+void TwitchChannel::addJoinedUser(const QString &user)
+{
+    auto *app = getApp();
+    if (user == app->accounts->Twitch.getCurrent()->getUserName() ||
+        !app->settings->showJoins.getValue()) {
+        return;
+    }
+
+    std::lock_guard<std::mutex> guard(this->joinedUserMutex);
+
+    joinedUsers << user;
+
+    if (!this->joinedUsersMergeQueued) {
+        this->joinedUsersMergeQueued = true;
+
+        QTimer::singleShot(500, &this->object, [this] {
+            std::lock_guard<std::mutex> guard(this->joinedUserMutex);
+
+            this->addMessage(messages::Message::createSystemMessage("Users joined: " +
+                                                                    this->joinedUsers.join(", ")));
+            this->joinedUsersMergeQueued = false;
+        });
+    }
+}
+
+void TwitchChannel::addPartedUser(const QString &user)
+{
+    auto *app = getApp();
+
+    if (user == app->accounts->Twitch.getCurrent()->getUserName() ||
+        !app->settings->showJoins.getValue()) {
+        return;
+    }
+
+    std::lock_guard<std::mutex> guard(this->partedUserMutex);
+
+    partedUsers << user;
+
+    if (!this->partedUsersMergeQueued) {
+        this->partedUsersMergeQueued = true;
+
+        QTimer::singleShot(500, &this->object, [this] {
+            std::lock_guard<std::mutex> guard(this->partedUserMutex);
+
+            this->addMessage(messages::Message::createSystemMessage("Users parted: " +
+                                                                    this->partedUsers.join(", ")));
+
+            this->partedUsersMergeQueued = false;
+        });
+    }
+}
+
 TwitchChannel::RoomModes TwitchChannel::getRoomModes()
 {
     std::lock_guard<std::mutex> lock(this->roomModeMutex);

src/providers/twitch/twitchchannel.hpp

@@ -63,6 +63,8 @@ public:
     bool hasModRights();
 
     void addRecentChatter(const std::shared_ptr<messages::Message> &message) final;
+    void addJoinedUser(const QString &user);
+    void addPartedUser(const QString &user);
 
     const std::shared_ptr<chatterino::util::EmoteMap> bttvChannelEmotes;
     const std::shared_ptr<chatterino::util::EmoteMap> ffzChannelEmotes;
@@ -113,6 +115,14 @@ private:
     RoomModes roomModes;
     std::mutex roomModeMutex;
 
+    QObject object;
+    std::mutex joinedUserMutex;
+    QStringList joinedUsers;
+    bool joinedUsersMergeQueued = false;
+    std::mutex partedUserMutex;
+    QStringList partedUsers;
+    bool partedUsersMergeQueued = false;
+
     Communi::IrcConnection *readConnection;
 
     friend class TwitchServer;

src/providers/twitch/twitchserver.cpp

@@ -114,21 +114,26 @@ void TwitchServer::messageReceived(IrcMessage *message)
 
     const QString &command = message->command();
 
+    auto &handler = IrcMessageHandler::getInstance();
+
     if (command == "ROOMSTATE") {
-        IrcMessageHandler::getInstance().handleRoomStateMessage(message);
+        handler.handleRoomStateMessage(message);
     } else if (command == "CLEARCHAT") {
-        IrcMessageHandler::getInstance().handleClearChatMessage(message);
+        handler.handleClearChatMessage(message);
     } else if (command == "USERSTATE") {
-        IrcMessageHandler::getInstance().handleUserStateMessage(message);
+        handler.handleUserStateMessage(message);
     } else if (command == "WHISPER") {
-        IrcMessageHandler::getInstance().handleWhisperMessage(message);
+        handler.handleWhisperMessage(message);
     } else if (command == "USERNOTICE") {
-        IrcMessageHandler::getInstance().handleUserNoticeMessage(message);
+        handler.handleUserNoticeMessage(message);
     } else if (command == "MODE") {
-        IrcMessageHandler::getInstance().handleModeMessage(message);
+        handler.handleModeMessage(message);
     } else if (command == "NOTICE") {
-        IrcMessageHandler::getInstance().handleNoticeMessage(
+        handler.handleNoticeMessage(static_cast<IrcNoticeMessage *>(message));
-            static_cast<IrcNoticeMessage *>(message));
+    } else if (command == "JOIN") {
+        handler.handleJoinMessage(message);
+    } else if (command == "PART") {
+        handler.handlePartMessage(message);
     }
 }
 

src/singletons/settingsmanager.hpp

@@ -55,6 +55,8 @@ public:
     /// Behaviour
     BoolSetting allowDuplicateMessages = {"/behaviour/allowDuplicateMessages", true};
     BoolSetting mentionUsersWithAt = {"/behaviour/mentionUsersWithAt", false};
+    BoolSetting showJoins = {"/behaviour/showJoins", false};
+    BoolSetting showParts = {"/behaviour/showParts", false};
     FloatSetting mouseScrollMultiplier = {"/behaviour/mouseScrollMultiplier", 1.0};
 
     // Auto-completion

src/widgets/settingspages/behaviourpage.cpp

@@ -34,6 +34,10 @@ BehaviourPage::BehaviourPage()
     {
         form->addRow("Window:", this->createCheckBox(WINDOW_TOPMOST, app->settings->windowTopMost));
         form->addRow("Messages:", this->createCheckBox(INPUT_EMPTY, app->settings->hideEmptyInput));
+        form->addRow("", this->createCheckBox("Show which users joined the channel",
+                                              app->settings->showJoins));
+        form->addRow("", this->createCheckBox("Show which users parted the channel",
+                                              app->settings->showParts));
         form->addRow("Pause chat:",
                      this->createCheckBox(PAUSE_HOVERING, app->settings->pauseChatHover));