[QoL] Improve client version check (#1053)

* Improve version check

* Add informative warning

* Fix the most critical issue that AO2 has ever encountered

An ugly header include

* Increase verbosity and visibility

* TUH

src/lobby.cpp

@@ -8,7 +8,10 @@
 #include "widgets/server_editor_dialog.h"
 
 #include <QImageReader>
+#include <QMessageBox>
 #include <QUiLoader>
+#include <QVersionNumber>
+#include <qnamespace.h>
 
 Lobby::Lobby(AOApplication *p_ao_app, NetworkManager *p_net_manager)
     : QMainWindow{}
@@ -101,9 +104,8 @@ void Lobby::reset_selection()
 
 void Lobby::loadUI()
 {
-  this->setWindowTitle(tr("Attorney Online %1").arg(QApplication::applicationVersion()));
-  this->setWindowIcon(QIcon(":/logo.png"));
-  this->setWindowFlags((this->windowFlags() | Qt::CustomizeWindowHint));
+  setWindowIcon(QIcon(":/logo.png"));
+  setWindowFlags((windowFlags() | Qt::CustomizeWindowHint));
 
   QUiLoader l_loader(this);
   QFile l_uiFile(Options::getInstance().getUIAsset(DEFAULT_UI));
@@ -558,11 +560,16 @@ void Lobby::get_motd()
 void Lobby::check_for_updates()
 {
   net_manager->request_document(MSDocumentType::ClientVersion, [this](QString version) {
-    const QString current_version = ao_app->get_version_string();
-    if (!version.isEmpty() && version != current_version)
+    QVersionNumber current_version = QVersionNumber::fromString(ao_app->get_version_string());
+    QVersionNumber master_version = QVersionNumber::fromString(version);
+
+    if (current_version < master_version)
     {
-      ui_game_version_lbl->setText(tr("Version: %1 (!)").arg(current_version));
-      ui_game_version_lbl->setToolTip(tr("New version available: %1").arg(version));
+      ui_game_version_lbl->setText(tr("Version: %1 [OUTDATED]").arg(current_version.toString()));
+      setWindowTitle(tr("[Your client is outdated]"));
+      const QString download_url = QString("https://github.com/AttorneyOnline/AO2-Client/releases/latest").replace(QRegularExpression("\\b(https?://\\S+\\.\\S+)\\b"), "<a href='\\1'>\\1</a>");
+      const QString message = QString("Your client is outdated!<br>Your Version: %1<br>Current Version: %2<br>Download the latest version at<br>%3").arg(current_version.toString(), master_version.toString(), download_url);
+      QMessageBox::warning(this, "Your client is outdated!", message);
     }
   });
 }