Added support for Twitch's Chat Replies

CHANGELOG.md

@@ -2,6 +2,7 @@
 
 ## Unversioned
 
+- Major: Added support for Twitch's Chat Replies. [Wiki Page](https://wiki.chatterino.com/Features/#message-replies) (#3722)
 - Major: Added multi-channel searching to search dialog via keyboard shortcut. (Ctrl+Shift+F by default) (#3694, #3875)
 - Minor: Added option to display tabs on the right and bottom. (#3847)
 - Minor: Added `is:first-msg` search option. (#3700)

resources/resources_autogenerated.qrc

@@ -20,6 +20,8 @@
     <file>buttons/addSplitDark.png</file>
     <file>buttons/ban.png</file>
     <file>buttons/banRed.png</file>
+    <file>buttons/cancel.svg</file>
+    <file>buttons/cancelDark.svg</file>
     <file>buttons/clearSearch.png</file>
     <file>buttons/copyDark.png</file>
     <file>buttons/copyDark.svg</file>
@@ -34,6 +36,10 @@
     <file>buttons/modModeDisabled2.png</file>
     <file>buttons/modModeEnabled.png</file>
     <file>buttons/modModeEnabled2.png</file>
+    <file>buttons/replyDark.png</file>
+    <file>buttons/replyDark.svg</file>
+    <file>buttons/replyThreadDark.png</file>
+    <file>buttons/replyThreadDark.svg</file>
     <file>buttons/search.png</file>
     <file>buttons/timeout.png</file>
     <file>buttons/trashCan.png</file>

src/CMakeLists.txt

@@ -144,6 +144,8 @@ set(SOURCE_FILES
         messages/MessageContainer.hpp
         messages/MessageElement.cpp
         messages/MessageElement.hpp
+        messages/MessageThread.cpp
+        messages/MessageThread.hpp
 
         messages/SharedMessageBuilder.cpp
         messages/SharedMessageBuilder.hpp
@@ -347,6 +349,8 @@ set(SOURCE_FILES
         widgets/BaseWidget.hpp
         widgets/BaseWindow.cpp
         widgets/BaseWindow.hpp
+        widgets/DraggablePopup.cpp
+        widgets/DraggablePopup.hpp
         widgets/FramelessEmbedWindow.cpp
         widgets/FramelessEmbedWindow.hpp
         widgets/Label.cpp
@@ -383,6 +387,8 @@ set(SOURCE_FILES
         widgets/dialogs/NotificationPopup.hpp
         widgets/dialogs/QualityPopup.cpp
         widgets/dialogs/QualityPopup.hpp
+        widgets/dialogs/ReplyThreadPopup.cpp
+        widgets/dialogs/ReplyThreadPopup.hpp
         widgets/dialogs/SelectChannelDialog.cpp
         widgets/dialogs/SelectChannelDialog.hpp
         widgets/dialogs/SelectChannelFiltersDialog.cpp

src/autogenerated/ResourcesAutogen.cpp

@@ -32,6 +32,8 @@ Resources2::Resources2()
     this->buttons.modModeDisabled2 = QPixmap(":/buttons/modModeDisabled2.png");
     this->buttons.modModeEnabled = QPixmap(":/buttons/modModeEnabled.png");
     this->buttons.modModeEnabled2 = QPixmap(":/buttons/modModeEnabled2.png");
+    this->buttons.replyDark = QPixmap(":/buttons/replyDark.png");
+    this->buttons.replyThreadDark = QPixmap(":/buttons/replyThreadDark.png");
     this->buttons.search = QPixmap(":/buttons/search.png");
     this->buttons.timeout = QPixmap(":/buttons/timeout.png");
     this->buttons.trashCan = QPixmap(":/buttons/trashCan.png");

src/autogenerated/ResourcesAutogen.hpp

@@ -39,6 +39,8 @@ class Resources2 : public Singleton
         QPixmap modModeDisabled2;
         QPixmap modModeEnabled;
         QPixmap modModeEnabled2;
+        QPixmap replyDark;
+        QPixmap replyThreadDark;
         QPixmap search;
         QPixmap timeout;
         QPixmap trashCan;

src/common/Channel.cpp

@@ -278,6 +278,13 @@ bool Channel::canSendMessage() const
     return false;
 }
 
+bool Channel::isWritable() const
+{
+    using Type = Channel::Type;
+    auto type = this->getType();
+    return type != Type::TwitchMentions && type != Type::TwitchLive;
+}
+
 void Channel::sendMessage(const QString &message)
 {
 }

src/common/Channel.hpp

@@ -49,6 +49,9 @@ class Channel : public std::enable_shared_from_this<Channel>
     // SIGNALS
     pajlada::Signals::Signal<const QString &, const QString &, bool &>
         sendMessageSignal;
+    pajlada::Signals::Signal<const QString &, const QString &, const QString &,
+                             bool &>
+        sendReplySignal;
     pajlada::Signals::Signal<MessagePtr &> messageRemovedFromStart;
     pajlada::Signals::Signal<MessagePtr &, boost::optional<MessageFlags>>
         messageAppended;
@@ -84,6 +87,7 @@ class Channel : public std::enable_shared_from_this<Channel>
 
     // CHANNEL INFO
     virtual bool canSendMessage() const;
+    virtual bool isWritable() const;  // whether split input will be usable
     virtual void sendMessage(const QString &message);
     virtual bool isMod() const;
     virtual bool isBroadcaster() const;

src/common/Common.hpp

@@ -51,6 +51,7 @@ using MessagePtr = std::shared_ptr<const Message>;
 
 enum class CopyMode {
     Everything,
+    EverythingButReplies,
     OnlyTextAndEmotes,
 };
 

src/controllers/commands/CommandController.cpp

@@ -26,6 +26,7 @@
 #include "util/StreamLink.hpp"
 #include "util/Twitch.hpp"
 #include "widgets/Window.hpp"
+#include "widgets/dialogs/ReplyThreadPopup.hpp"
 #include "widgets/dialogs/UserInfoPopup.hpp"
 #include "widgets/splits/Split.hpp"
 
@@ -687,7 +688,8 @@ void CommandController::initialize(Settings &, Paths &paths)
 
         auto *userPopup = new UserInfoPopup(
             getSettings()->autoCloseUserPopup,
-            static_cast<QWidget *>(&(getApp()->windows->getMainWindow())));
+            static_cast<QWidget *>(&(getApp()->windows->getMainWindow())),
+            nullptr);
         userPopup->setData(userName, channel);
         userPopup->move(QCursor::pos());
         userPopup->show();
@@ -1114,6 +1116,56 @@ void CommandController::initialize(Settings &, Paths &paths)
         return "";
     });
 
+    this->registerCommand(
+        "/reply", [](const QStringList &words, ChannelPtr channel) {
+            auto *twitchChannel = dynamic_cast<TwitchChannel *>(channel.get());
+            if (twitchChannel == nullptr)
+            {
+                channel->addMessage(makeSystemMessage(
+                    "The /reply command only works in Twitch channels"));
+                return "";
+            }
+
+            if (words.size() < 3)
+            {
+                channel->addMessage(
+                    makeSystemMessage("Usage: /reply <username> <message>"));
+                return "";
+            }
+
+            QString username = words[1];
+            stripChannelName(username);
+
+            auto snapshot = twitchChannel->getMessageSnapshot();
+            for (auto it = snapshot.rbegin(); it != snapshot.rend(); ++it)
+            {
+                const auto &msg = *it;
+                if (msg->loginName.compare(username, Qt::CaseInsensitive) == 0)
+                {
+                    std::shared_ptr<MessageThread> thread;
+                    // found most recent message by user
+                    if (msg->replyThread == nullptr)
+                    {
+                        thread = std::make_shared<MessageThread>(msg);
+                        twitchChannel->addReplyThread(thread);
+                    }
+                    else
+                    {
+                        thread = msg->replyThread;
+                    }
+
+                    QString reply = words.mid(2).join(" ");
+                    twitchChannel->sendReply(reply, thread->rootId());
+                    return "";
+                }
+            }
+
+            channel->addMessage(
+                makeSystemMessage("A message from that user wasn't found"));
+
+            return "";
+        });
+
 #ifndef NDEBUG
     this->registerCommand(
         "/fakemsg",

src/controllers/filters/parser/FilterParser.cpp

@@ -82,6 +82,7 @@ ContextMap buildContextMap(const MessagePtr &m, chatterino::Channel *channel)
          m->flags.has(MessageFlag::RedeemedChannelPointReward)},
         {"flags.first_message", m->flags.has(MessageFlag::FirstMessage)},
         {"flags.whisper", m->flags.has(MessageFlag::Whisper)},
+        {"flags.reply", m->flags.has(MessageFlag::ReplyMessage)},
 
         {"message.content", m->messageText},
         {"message.length", m->messageText.length()},

src/controllers/filters/parser/Tokenizer.hpp

@@ -25,6 +25,7 @@ static const QMap<QString, QString> validIdentifiersMap = {
     {"flags.reward_message", "channel point reward message?"},
     {"flags.first_message", "first message?"},
     {"flags.whisper", "whisper message?"},
+    {"flags.reply", "reply message?"},
     {"message.content", "message text"},
     {"message.length", "message length"}};
 

src/messages/Link.hpp

@@ -23,6 +23,8 @@ struct Link {
         JumpToChannel,
         Reconnect,
         CopyToClipboard,
+        ReplyToMessage,
+        ViewThread,
     };
 
     Link();

src/messages/Message.hpp

@@ -13,6 +13,7 @@
 
 namespace chatterino {
 class MessageElement;
+class MessageThread;
 
 enum class MessageFlag : uint32_t {
     None = 0,
@@ -40,6 +41,7 @@ enum class MessageFlag : uint32_t {
     RedeemedChannelPointReward = (1 << 21),
     ShowInMentions = (1 << 22),
     FirstMessage = (1 << 23),
+    ReplyMessage = (1 << 24),
 };
 using MessageFlags = FlagsEnum<MessageFlag>;
 
@@ -68,6 +70,10 @@ struct Message : boost::noncopyable {
     std::vector<Badge> badges;
     std::unordered_map<QString, QString> badgeInfos;
     std::shared_ptr<QColor> highlightColor;
+    // Each reply holds a reference to the thread. When every reply is dropped,
+    // the reply thread will be cleaned up by the TwitchChannel.
+    // The root of the thread does not have replyThread set.
+    std::shared_ptr<MessageThread> replyThread;
     uint32_t count = 1;
     std::vector<std::unique_ptr<MessageElement>> elements;