Update last loaded timestamp in decklist file and then restore original last modified timestamp if a user requests a deck load.

cockatrice/src/client/tabs/tab_deck_editor.cpp

@@ -1045,7 +1045,7 @@ void TabDeckEditor::openDeckFromFile(const QString &fileName, DeckOpenLocation d
     DeckLoader::FileFormat fmt = DeckLoader::getFormatFromName(fileName);
 
     auto *l = new DeckLoader;
-    if (l->loadFromFile(fileName, fmt)) {
+    if (l->loadFromFile(fileName, fmt, true)) {
         SettingsCache::instance().recents().updateRecentlyOpenedDeckPaths(fileName);
         updateBannerCardComboBox();
         if (!l->getBannerCard().isEmpty()) {

cockatrice/src/client/tabs/tab_deck_storage.cpp

@@ -203,7 +203,7 @@ void TabDeckStorage::actOpenLocalDeck()
         QString filePath = localDirModel->filePath(curLeft);
 
         DeckLoader deckLoader;
-        if (!deckLoader.loadFromFile(filePath, DeckLoader::CockatriceFormat))
+        if (!deckLoader.loadFromFile(filePath, DeckLoader::CockatriceFormat, true))
             continue;
 
         SettingsCache::instance().recents().updateRecentlyOpenedDeckPaths(filePath);

cockatrice/src/client/tabs/tab_game.cpp

@@ -307,7 +307,7 @@ void DeckViewContainer::replaceDeckStorageWithDeckView(QMouseEvent *event, DeckP
     QString deckString;
     DeckLoader deck;
 
-    bool error = !deck.loadFromFile(fileName, fmt);
+    bool error = !deck.loadFromFile(fileName, fmt, true);
     if (!error) {
         deckString = deck.writeToString_Native();
         error = deckString.length() > MAX_FILE_LENGTH;
@@ -357,7 +357,7 @@ void DeckViewContainer::loadDeckFromFile(const QString &filePath)
     QString deckString;
     DeckLoader deck;
 
-    bool error = !deck.loadFromFile(filePath, fmt);
+    bool error = !deck.loadFromFile(filePath, fmt, true);
     if (!error) {
         deckString = deck.writeToString_Native();
         error = deckString.length() > MAX_FILE_LENGTH;

cockatrice/src/client/tabs/visual_deck_storage/tab_deck_storage_visual.cpp

@@ -78,7 +78,7 @@ void TabDeckStorageVisual::actOpenLocalDeck(QMouseEvent *event, DeckPreviewCardP
 {
     (void)event;
     DeckLoader deckLoader;
-    if (!deckLoader.loadFromFile(instance->filePath, DeckLoader::CockatriceFormat))
+    if (!deckLoader.loadFromFile(instance->filePath, DeckLoader::CockatriceFormat, true))
         return;
 
     emit openDeckEditor(&deckLoader);

cockatrice/src/deck/deck_loader.cpp

@@ -7,6 +7,7 @@
 
 #include <QDebug>
 #include <QFile>
+#include <QFileInfo>
 #include <QRegularExpression>
 #include <QStringList>
 
@@ -34,7 +35,7 @@ DeckLoader::DeckLoader(const DeckLoader &other)
 {
 }
 
-bool DeckLoader::loadFromFile(const QString &fileName, FileFormat fmt)
+bool DeckLoader::loadFromFile(const QString &fileName, FileFormat fmt, bool userRequest)
 {
     QFile file(fileName);
     if (!file.open(QIODevice::ReadOnly | QIODevice::Text)) {
@@ -50,7 +51,7 @@ bool DeckLoader::loadFromFile(const QString &fileName, FileFormat fmt)
             result = loadFromFile_Native(&file);
             qDebug() << "Loaded from" << fileName << "-" << result;
             if (!result) {
-                qDebug() << "Retying as plain format";
+                qDebug() << "Retrying as plain format";
                 file.seek(0);
                 result = loadFromFile_Plain(&file);
                 fmt = PlainTextFormat;
@@ -65,6 +66,9 @@ bool DeckLoader::loadFromFile(const QString &fileName, FileFormat fmt)
     if (result) {
         lastFileName = fileName;
         lastFileFormat = fmt;
+        if (userRequest) {
+            updateLastLoadedTimestamp(fileName, fmt);
+        }
 
         emit deckLoaded();
     }
@@ -110,6 +114,59 @@ bool DeckLoader::saveToFile(const QString &fileName, FileFormat fmt)
     return result;
 }
 
+bool DeckLoader::updateLastLoadedTimestamp(const QString &fileName, FileFormat fmt)
+{
+    QFileInfo fileInfo(fileName);
+    if (!fileInfo.exists()) {
+        qWarning() << "File does not exist:" << fileName;
+        return false;
+    }
+
+    QDateTime originalTimestamp = fileInfo.lastModified();
+
+    // Open the file for writing
+    QFile file(fileName);
+    if (!file.open(QIODevice::WriteOnly | QIODevice::Text)) {
+        qWarning() << "Failed to open file for writing:" << fileName;
+        return false;
+    }
+
+    bool result = false;
+
+    // Perform file modifications
+    switch (fmt) {
+        case PlainTextFormat:
+            break;
+        case CockatriceFormat:
+            setLastLoadedTimestamp(QDateTime::currentDateTime().toString());
+            result = saveToFile_Native(&file);
+            break;
+    }
+
+    file.close(); // Close the file to ensure changes are flushed
+
+    if (result) {
+        lastFileName = fileName;
+        lastFileFormat = fmt;
+
+        // Re-open the file and set the original timestamp
+        if (!file.open(QIODevice::ReadWrite)) {
+            qWarning() << "Failed to re-open file to set timestamp:" << fileName;
+            return false;
+        }
+
+        if (!file.setFileTime(originalTimestamp, QFileDevice::FileModificationTime)) {
+            qWarning() << "Failed to set modification time for file:" << fileName;
+            file.close();
+            return false;
+        }
+
+        file.close();
+    }
+
+    return result;
+}
+
 // This struct is here to support the forEachCard function call, defined in decklist. It
 // requires a function to be called for each card, and passes an inner node and a card for
 // each card in the decklist.
@@ -120,7 +177,7 @@ struct FormatDeckListForExport
     QString &sideBoardCards;
     // create main operator for struct, allowing the foreachcard to work.
     FormatDeckListForExport(QString &_mainBoardCards, QString &_sideBoardCards)
-        : mainBoardCards(_mainBoardCards), sideBoardCards(_sideBoardCards){};
+        : mainBoardCards(_mainBoardCards), sideBoardCards(_sideBoardCards) {};
 
     void operator()(const InnerDecklistNode *node, const DecklistCardNode *card) const
     {

cockatrice/src/deck/deck_loader.h

@@ -42,9 +42,10 @@ public:
 
     static FileFormat getFormatFromName(const QString &fileName);
 
-    bool loadFromFile(const QString &fileName, FileFormat fmt);
+    bool loadFromFile(const QString &fileName, FileFormat fmt, bool userRequest = false);
     bool loadFromRemote(const QString &nativeString, int remoteDeckId);
     bool saveToFile(const QString &fileName, FileFormat fmt);
+    bool updateLastLoadedTimestamp(const QString &fileName, FileFormat fmt);
     QString exportDeckToDecklist();
 
     void resolveSetNameAndNumberToProviderID();