From d943f2d89abe67f1847dc842b6ded0c5cadeb1ee Mon Sep 17 00:00:00 2001
From: Bent Witthold <bent@working-copy.org>
Date: Fri, 31 Oct 2025 14:47:27 +0100
Subject: [PATCH] Added checking for update and triggering the updater.

---
 CMakeLists.txt  |  1 +
 constants.h     | 15 ++++++++++++
 genericcore.cpp | 62 +++++++++++++++++++++++++++++++++++++++++++++++++
 genericcore.h   | 15 +++++++++++-
 4 files changed, 92 insertions(+), 1 deletion(-)
 create mode 100644 constants.h

diff --git a/CMakeLists.txt b/CMakeLists.txt
index d922ce0..9256626 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -20,6 +20,7 @@ add_library(${TARGET_APP} STATIC
   genericcore.cpp
   genericcore.h
   ${TS_FILES}
+  constants.h
 )
 
 include_directories(${CMAKE_CURRENT_BINARY_DIR})
diff --git a/constants.h b/constants.h
new file mode 100644
index 0000000..b9ebc8a
--- /dev/null
+++ b/constants.h
@@ -0,0 +1,15 @@
+#ifndef CONSTANTS_H
+#define CONSTANTS_H
+
+#include <QString>
+
+/// Platform dependent
+#ifdef Q_OS_LINUX
+static const QString UPDATER_EXE = "maintenancetool";
+#elif defined(Q_OS_MAC)
+static const QString UPDATER_EXE = "maintenancetool.app/Contents/MacOS/maintenancetool";
+#elif defined(Q_OS_WIN)
+static const QString UPDATER_EXE = "maintenancetool.exe";
+#endif
+
+#endif  // CONSTANTS_H
diff --git a/genericcore.cpp b/genericcore.cpp
index f296c21..7d5daed 100644
--- a/genericcore.cpp
+++ b/genericcore.cpp
@@ -1,9 +1,14 @@
 #include "genericcore.h"
 
+#include <QCoreApplication>
+#include <QDateTime>
 #include <QDebug>
+#include <QProcess>
+#include <QSettings>
 #include <QString>
 
 #include "CoreConfig.h"
+#include "constants.h"
 
 using namespace std;
 
@@ -16,3 +21,60 @@ QString GenericCore::toString() const {
 }
 
 void GenericCore::sayHello() const { qDebug() << "Hello from the core!"; }
+
+bool GenericCore::isApplicationUpdateAvailable() {
+  QProcess process;
+  const QString programmString = getMaintenanceToolFilePath();
+  const QStringList checkArgs("--checkupdates");
+  process.start(programmString, checkArgs);
+  process.waitForFinished();
+
+  const int exitCode = process.exitCode();
+  if (process.error() != QProcess::UnknownError) {
+    qDebug() << "Error checking for updates";
+    emit displayStatusMessage("Error checking for updates");
+    return false;
+  }
+
+  QByteArray data = process.readAllStandardOutput();
+
+  QSettings settings;
+  settings.beginGroup("Application");
+  settings.setValue("lastCheckForUpdate", QDateTime::currentDateTimeUtc());
+  settings.endGroup();
+  settings.sync();
+
+  if (data.isEmpty() || data.contains("currently no updates")) {
+    qInfo() << "No updates available";
+    emit displayStatusMessage("No updates available.");
+    return false;
+  }
+
+  return true;
+}
+
+void GenericCore::triggerApplicationUpdate() {
+  // TODO include cleaness of undo stack
+  // if (!m_undoStack->isClean()) {
+  //   saveItems();
+  // }
+  //  QStringList args("update componentA componentB");
+  QStringList args("--start-updater");
+  QString toolFilePath = getMaintenanceToolFilePath();
+  QProcess::startDetached(toolFilePath, args);
+}
+
+QString GenericCore::getMaintenanceToolFilePath() const {
+  QString applicationDirPath = QCoreApplication::applicationDirPath();
+
+/// setting the applicationDirPath hard coded to test update feature from IDE
+#ifdef QT_DEBUG
+  applicationDirPath = "/opt/GenericQtClient";
+#endif
+
+#ifdef Q_OS_MAC
+  applicationDirPath.append("/../../..");
+#endif
+  const QString filePath = applicationDirPath + "/" + UPDATER_EXE;
+  return filePath;
+}
diff --git a/genericcore.h b/genericcore.h
index 3b4b4e6..bef0ac0 100644
--- a/genericcore.h
+++ b/genericcore.h
@@ -1,15 +1,28 @@
 #ifndef GENERICCORE_H
 #define GENERICCORE_H
 
+#include <QObject>
+
 class QString;
 
-class GenericCore {
+class GenericCore : public QObject {
+  Q_OBJECT
+
  public:
   GenericCore();
   ~GenericCore();
 
   QString toString() const;
   void sayHello() const;
+
+  bool isApplicationUpdateAvailable();
+  void triggerApplicationUpdate();
+
+ signals:
+  void displayStatusMessage(QString message);
+
+ private:
+  QString getMaintenanceToolFilePath() const;
 };
 
 #endif  // GENERICCORE_H