Move most Command variables into the CommandController shared variables (#3824)

CHANGELOG.md

@@ -41,6 +41,7 @@
 - Dev: Overhaul highlight system by moving all checks into a Controller allowing for easier tests. (#3399, #3801)
 - Dev: Use Game Name returned by Get Streams instead of querying it from the Get Games API. (#3662)
 - Dev: Batch checking live status for all channels after startup. (#3757, #3762, #3767)
+- Dev: Move most command context into the command controller. (#3824)
 
 ## 2.3.5
 

src/controllers/commands/CommandController.cpp

@@ -177,24 +177,27 @@ bool appendWhisperMessageStringLocally(const QString &textNoEmoji)
     return false;
 }
 
-const std::function<QString(const QString &, const ChannelPtr &)>
+using VariableReplacer = std::function<QString(
-    noOpPlaceholder = [](const auto &altText, const auto &channel) {
+    const QString &, const ChannelPtr &, const Message *)>;
+
+const VariableReplacer NO_OP_PLACEHOLDER =
+    [](const auto &altText, const auto &channel, const auto *message) {
         return altText;
     };
 
-const std::map<QString,
+const std::unordered_map<QString, VariableReplacer> COMMAND_VARS{
-               std::function<QString(const QString &, const ChannelPtr &)>>
-    COMMAND_VARS{
     {
         "channel.name",
-            [](const auto &altText, const auto &channel) {
+        [](const auto &altText, const auto &channel, const auto *message) {
             (void)(altText);  //unused
+            (void)(message);  //unused
             return channel->getName();
         },
     },
     {
         "channel.id",
-            [](const auto &altText, const auto &channel) {
+        [](const auto &altText, const auto &channel, const auto *message) {
+            (void)(message);  //unused
             auto *tc = dynamic_cast<TwitchChannel *>(channel.get());
             if (tc == nullptr)
             {
@@ -204,9 +207,20 @@ const std::map<QString,
             return tc->roomId();
         },
     },
+    {
+        // NOTE: The use of {channel} is deprecated and support for it will drop at some point
+        // Users should be encouraged to use {channel.name} instead.
+        "channel",
+        [](const auto &altText, const auto &channel, const auto *message) {
+            (void)(altText);  //unused
+            (void)(message);  //unused
+            return channel->getName();
+        },
+    },
     {
         "stream.game",
-            [](const auto &altText, const auto &channel) {
+        [](const auto &altText, const auto &channel, const auto *message) {
+            (void)(message);  //unused
             auto *tc = dynamic_cast<TwitchChannel *>(channel.get());
             if (tc == nullptr)
             {
@@ -218,7 +232,8 @@ const std::map<QString,
     },
     {
         "stream.title",
-            [](const auto &altText, const auto &channel) {
+        [](const auto &altText, const auto &channel, const auto *message) {
+            (void)(message);  //unused
             auto *tc = dynamic_cast<TwitchChannel *>(channel.get());
             if (tc == nullptr)
             {
@@ -230,26 +245,144 @@ const std::map<QString,
     },
     {
         "my.id",
-            [](const auto &altText, const auto &channel) {
+        [](const auto &altText, const auto &channel, const auto *message) {
             (void)(channel);  //unused
+            (void)(message);  //unused
             auto uid = getApp()->accounts->twitch.getCurrent()->getUserId();
             return uid.isEmpty() ? altText : uid;
         },
     },
     {
         "my.name",
-            [](const auto &altText, const auto &channel) {
+        [](const auto &altText, const auto &channel, const auto *message) {
             (void)(channel);  //unused
-                auto name =
+            (void)(message);  //unused
-                    getApp()->accounts->twitch.getCurrent()->getUserName();
+            auto name = getApp()->accounts->twitch.getCurrent()->getUserName();
             return name.isEmpty() ? altText : name;
         },
     },
+    {
+        "user.name",
+        [](const auto &altText, const auto &channel, const auto *message) {
+            (void)(channel);  //unused
+            if (message == nullptr)
+            {
+                return altText;
+            }
+
+            const auto &v = message->loginName;
+
+            if (v.isEmpty())
+            {
+                return altText;
+            }
+
+            return v;
+        },
+    },
+    {
+        // NOTE: The use of {user} is deprecated and support for it will drop at some point
+        // Users should be encouraged to use {user.name} instead.
+        "user",
+        [](const auto &altText, const auto &channel, const auto *message) {
+            (void)(channel);  //unused
+            if (message == nullptr)
+            {
+                return altText;
+            }
+
+            const auto &v = message->loginName;
+
+            if (v.isEmpty())
+            {
+                return altText;
+            }
+
+            return v;
+        },
+    },
+    {
+        "msg.id",
+        [](const auto &altText, const auto &channel, const auto *message) {
+            (void)(channel);  //unused
+            if (message == nullptr)
+            {
+                return altText;
+            }
+
+            const auto &v = message->id;
+
+            if (v.isEmpty())
+            {
+                return altText;
+            }
+
+            return v;
+        },
+    },
+    {
+        // NOTE: The use of {msg-id} is deprecated and support for it will drop at some point
+        // Users should be encouraged to use {msg.id} instead.
+        "msg-id",
+        [](const auto &altText, const auto &channel, const auto *message) {
+            (void)(channel);  //unused
+            if (message == nullptr)
+            {
+                return altText;
+            }
+
+            const auto &v = message->id;
+
+            if (v.isEmpty())
+            {
+                return altText;
+            }
+
+            return v;
+        },
+    },
+    {
+        "msg.text",
+        [](const auto &altText, const auto &channel, const auto *message) {
+            (void)(channel);  //unused
+            if (message == nullptr)
+            {
+                return altText;
+            }
+
+            const auto &v = message->messageText;
+
+            if (v.isEmpty())
+            {
+                return altText;
+            }
+
+            return v;
+        },
+    },
+    {
+        // NOTE: The use of {message} is deprecated and support for it will drop at some point
+        // Users should be encouraged to use {msg.text} instead.
+        "message",
+        [](const auto &altText, const auto &channel, const auto *message) {
+            (void)(channel);  //unused
+            if (message == nullptr)
+            {
+                return altText;
+            }
+
+            const auto &v = message->messageText;
+
+            if (v.isEmpty())
+            {
+                return altText;
+            }
+
+            return v;
+        },
+    },
     // variables used in mod buttons and the like, these make no sense in normal commands, so they are left empty
-        {"input.text", noOpPlaceholder},
+    {"input.text", NO_OP_PLACEHOLDER},
-        {"msg.id", noOpPlaceholder},
-        {"user.name", noOpPlaceholder},
-        {"msg.text", noOpPlaceholder},
 };
 
 }  // namespace
@@ -1120,10 +1253,10 @@ void CommandController::registerCommand(QString commandName,
     this->defaultChatterinoCommandAutoCompletions_.append(commandName);
 }
 
-QString CommandController::execCustomCommand(const QStringList &words,
+QString CommandController::execCustomCommand(
-                                             const Command &command,
+    const QStringList &words, const Command &command, bool dryRun,
-                                             bool dryRun, ChannelPtr channel,
+    ChannelPtr channel, const Message *message,
-                                             std::map<QString, QString> context)
+    std::unordered_map<QString, QString> context)
 {
     QString result;
 
@@ -1167,20 +1300,21 @@ QString CommandController::execCustomCommand(const QStringList &words,
 
             if (var != context.end())
             {
+                // Found variable in `context`
                 result += var->second.isEmpty() ? altText : var->second;
+                continue;
             }
-            else
+
-            {
             auto it = COMMAND_VARS.find(varName);
             if (it != COMMAND_VARS.end())
             {
-                    result += it->second(altText, channel);
+                // Found variable in `COMMAND_VARS`
+                result += it->second(altText, channel, message);
+                continue;
             }
-                else
+
-                {
+            // Fall back to replacing it with the actual matched string
             result += "{" + match.captured(3) + "}";
-                }
-            }
             continue;
         }
 

src/controllers/commands/CommandController.hpp

@@ -11,6 +11,7 @@
 
 #include <memory>
 #include <mutex>
+#include <unordered_map>
 
 namespace chatterino {
 
@@ -34,9 +35,10 @@ public:
 
     CommandModel *createModel(QObject *parent);
 
-    QString execCustomCommand(const QStringList &words, const Command &command,
+    QString execCustomCommand(
-                              bool dryRun, ChannelPtr channel,
+        const QStringList &words, const Command &command, bool dryRun,
-                              std::map<QString, QString> context = {});
+        ChannelPtr channel, const Message *message = nullptr,
+        std::unordered_map<QString, QString> context = {});
 
 private:
     void load(Paths &paths);

src/widgets/helper/ChannelView.cpp

@@ -2125,20 +2125,12 @@ void ChannelView::addCommandExecutionContextMenuItems(
             {
                 userText = split->getInput().getInputText();
             }
+
+            // Execute command through right-clicking a message -> Execute command
             QString value = getApp()->commands->execCustomCommand(
-                inputText.split(' '), cmd, true, channel,
+                inputText.split(' '), cmd, true, channel, layout->getMessage(),
                 {
-                    {"user.name", layout->getMessage()->loginName},
-                    {"msg.id", layout->getMessage()->id},
-                    {"msg.text", layout->getMessage()->messageText},
                     {"input.text", userText},
-
-                    // old placeholders
-                    {"user", layout->getMessage()->loginName},
-                    {"msg-id", layout->getMessage()->id},
-                    {"message", layout->getMessage()->messageText},
-
-                    {"channel", this->channel()->getName()},
                 });
 
             value = getApp()->commands->execCommand(value, channel, false);
@@ -2283,21 +2275,10 @@ void ChannelView::handleLinkClick(QMouseEvent *event, const Link &link,
                 }
             }
 
+            // Execute command clicking a moderator button
             value = getApp()->commands->execCustomCommand(
                 QStringList(), Command{"(modaction)", value}, true, channel,
-                {
+                layout->getMessage());
-                    {"user.name", layout->getMessage()->loginName},
-                    {"msg.id", layout->getMessage()->id},
-                    {"msg.text", layout->getMessage()->messageText},
-
-                    // old placeholders
-                    {"user", layout->getMessage()->loginName},
-                    {"msg-id", layout->getMessage()->id},
-                    {"message", layout->getMessage()->messageText},
-
-                    // new version of this is inside execCustomCommand
-                    {"channel", this->channel()->getName()},
-                });
 
             value = getApp()->commands->execCommand(value, channel, false);