Clean up event to string related codes.

Working on #55.

src/messageeventmodel.cpp

@@ -13,6 +13,8 @@
 #include <QtCore/QDebug>
 #include <QtQml>  // for qmlRegisterType()
 
+#include "utils.h"
+
 static QString parseAvatarUrl(QUrl url) {
   return url.host() + "/" + url.path();
 }
@@ -232,120 +234,13 @@ QVariant MessageEventModel::data(const QModelIndex& idx, int role) const {
                          std::min(row, timelineBaseIndex());
   const auto& evt = isPending ? **pendingIt : **timelineIt;
 
-  using namespace QMatrixClient;
   if (role == Qt::DisplayRole) {
-    if (evt.isRedacted()) {
-      auto reason = evt.redactedBecause()->reason();
-      if (reason.isEmpty()) return tr("Redacted");
-
-      return tr("Redacted: %1").arg(evt.redactedBecause()->reason());
-    }
-
-    return visit(
-        evt,
-        [this](const RoomMessageEvent& e) {
-          using namespace MessageEventContent;
-
-          if (e.hasTextContent() && e.mimeType().name() != "text/plain") {
-            static const QRegExp userPillRegExp(
-                "<a href=\"https://matrix.to/#/@.*:.*\">(.*)</a>");
-            QString formattedStr(
-                static_cast<const TextContent*>(e.content())->body);
-            formattedStr.replace(userPillRegExp,
-                                 "<b class=\"user-pill\">\\1</b>");
-            return formattedStr;
-          }
-          if (e.hasFileContent()) {
-            auto fileCaption = e.content()->fileInfo()->originalName;
-            if (fileCaption.isEmpty())
-              fileCaption = m_currentRoom->prettyPrint(e.plainBody());
-            if (fileCaption.isEmpty()) return tr("a file");
-          }
-          return m_currentRoom->prettyPrint(e.plainBody());
-        },
-        [this](const RoomMemberEvent& e) {
-          // FIXME: Rewind to the name that was at the time of this event
-          QString subjectName = m_currentRoom->roomMembername(e.userId());
-          // The below code assumes senderName output in AuthorRole
-          switch (e.membership()) {
-            case MembershipType::Invite:
-              if (e.repeatsState())
-                return tr("reinvited %1 to the room").arg(subjectName);
-              FALLTHROUGH;
-            case MembershipType::Join: {
-              if (e.repeatsState()) return tr("joined the room (repeated)");
-              if (!e.prevContent() ||
-                  e.membership() != e.prevContent()->membership) {
-                return e.membership() == MembershipType::Invite
-                           ? tr("invited %1 to the room").arg(subjectName)
-                           : tr("joined the room");
-              }
-              QString text{};
-              if (e.isRename()) {
-                if (e.displayName().isEmpty())
-                  text = tr("cleared their display name");
-                else
-                  text = tr("changed their display name to %1")
-                             .arg(e.displayName());
-              }
-              if (e.isAvatarUpdate()) {
-                if (!text.isEmpty()) text += " and ";
-                if (e.avatarUrl().isEmpty())
-                  text += tr("cleared the avatar");
-                else
-                  text += tr("updated the avatar");
-              }
-              return text;
-            }
-            case MembershipType::Leave:
-              if (e.prevContent() &&
-                  e.prevContent()->membership == MembershipType::Ban) {
-                return (e.senderId() != e.userId())
-                           ? tr("unbanned %1").arg(subjectName)
-                           : tr("self-unbanned");
-              }
-              return (e.senderId() != e.userId())
-                         ? tr("has kicked %1 from the room").arg(subjectName)
-                         : tr("left the room");
-            case MembershipType::Ban:
-              return (e.senderId() != e.userId())
-                         ? tr("banned %1 from the room").arg(subjectName)
-                         : tr("self-banned from the room");
-            case MembershipType::Knock:
-              return tr("knocked");
-            default:;
-          }
-          return tr("made something unknown");
-        },
-        [](const RoomAliasesEvent& e) {
-          return tr("set aliases to: %1").arg(e.aliases().join(", "));
-        },
-        [](const RoomCanonicalAliasEvent& e) {
-          return (e.alias().isEmpty())
-                     ? tr("cleared the room main alias")
-                     : tr("set the room main alias to: %1").arg(e.alias());
-        },
-        [](const RoomNameEvent& e) {
-          return (e.name().isEmpty())
-                     ? tr("cleared the room name")
-                     : tr("set the room name to: %1").arg(e.name());
-        },
-        [](const RoomTopicEvent& e) {
-          return (e.topic().isEmpty())
-                     ? tr("cleared the topic")
-                     : tr("set the topic to: %1").arg(e.topic());
-        },
-        [](const RoomAvatarEvent&) { return tr("changed the room avatar"); },
-        [](const EncryptionEvent&) {
-          return tr("activated End-to-End Encryption");
-        },
-        tr("Unknown Event"));
+    return utils::eventToString(evt, m_currentRoom, Qt::RichText);
   }
 
   if (role == MessageRole) {
     static const QRegExp rmReplyRegExp("^> <@.*:.*> .*\n\n(.*)");
-    return evt.contentJson().value("body").toString().replace(rmReplyRegExp,
-                                                              "\\1");
+    return utils::eventToString(evt, m_currentRoom).replace(rmReplyRegExp, "\\1");
   }
 
   if (role == Qt::ToolTipRole) {