feat: notify mods when users are warned (#5441)

Co-authored-by: Rasmus Karlsson <rasmus.karlsson@pajlada.com>

src/messages/MessageBuilder.cpp

@@ -323,6 +323,31 @@ MessageBuilder::MessageBuilder(const UnbanAction &action)
     this->message().searchText = text;
 }
 
+MessageBuilder::MessageBuilder(const WarnAction &action)
+    : MessageBuilder()
+{
+    this->emplace<TimestampElement>();
+    this->message().flags.set(MessageFlag::System);
+
+    QString text;
+
+    // TODO: Use MentionElement here, once WarnAction includes username/displayname
+    this->emplaceSystemTextAndUpdate("A moderator", text)
+        ->setLink({Link::UserInfo, "id:" + action.source.id});
+    this->emplaceSystemTextAndUpdate("warned", text);
+    this->emplaceSystemTextAndUpdate(
+            action.target.login + (action.reasons.isEmpty() ? "." : ":"), text)
+        ->setLink({Link::UserInfo, action.target.login});
+
+    if (!action.reasons.isEmpty())
+    {
+        this->emplaceSystemTextAndUpdate(action.reasons.join(", "), text);
+    }
+
+    this->message().messageText = text;
+    this->message().searchText = text;
+}
+
 MessageBuilder::MessageBuilder(const AutomodUserAction &action)
     : MessageBuilder()
 {

src/messages/MessageBuilder.hpp

@@ -12,6 +12,7 @@
 namespace chatterino {
 struct BanAction;
 struct UnbanAction;
+struct WarnAction;
 struct AutomodAction;
 struct AutomodUserAction;
 struct AutomodInfoAction;
@@ -78,6 +79,7 @@ public:
                    const QTime &time = QTime::currentTime());
     MessageBuilder(const BanAction &action, uint32_t count = 1);
     MessageBuilder(const UnbanAction &action);
+    MessageBuilder(const WarnAction &action);
     MessageBuilder(const AutomodUserAction &action);
 
     MessageBuilder(LiveUpdatesAddEmoteMessageTag, const QString &platform,