QDS-11394 DS templates are not working out of the box

Since the default Qt version is updated in import <module_name> <qt_version> statements and because of the Design Viewer WASM is staying at 6.4.3, projects shared online are not working out of the box. We need to remove the <qt_version> before running them.

src/designviewer.cpp

@@ -163,7 +163,84 @@ QString DesignViewer::unpackProject(const QByteArray &project, bool extractZip)
         projectLocation = ":" + resourcePath;
     }
 
-    return projectLocation;
+    // create a temporary directory and copy the project there
+    QTemporaryDir tempDir;
+    tempDir.setAutoRemove(false);
+    if (!tempDir.isValid()) {
+        printErr("Could not create a temporary directory.");
+        return "";
+    }
+
+    const QString tempDirPath = tempDir.path();
+    printLog("Temporary directory: " + tempDirPath);
+
+    QDir tempDirDir(tempDirPath);
+    if (!tempDirDir.exists()) {
+        printErr("Temporary directory does not exist.");
+        return "";
+    }
+
+    if (!QDir(projectLocation).exists()) {
+        printErr("Project directory does not exist.");
+        return "";
+    }
+
+    // copy all files and directories from projectLocation to tempDirPath
+    QDirIterator it(projectLocation,
+                    QDir::AllEntries | QDir::NoDotAndDotDot,
+                    QDirIterator::Subdirectories);
+    printLog("Files in project location: " + projectLocation);
+    while (it.hasNext()) {
+        const QString filePath = it.next();
+        printLog("Found file: " + filePath);
+        const QFileInfo fileInfo(filePath);
+        const QString relativeFilePath = fileInfo.filePath().remove(projectLocation);
+        const QString newFilePath = tempDirPath + relativeFilePath;
+        printLog("Copying file: " + filePath + " to " + newFilePath);
+        if (fileInfo.isDir()) {
+            QDir().mkpath(newFilePath);
+        } else if (!QFile::copy(filePath, newFilePath)) {
+            printErr("Could not copy file: " + filePath + " to " + newFilePath);
+            return "";
+        }
+    }
+
+    // find all .qml files in the temporary directory and remove the Qt versions from 6.5 to 6.9
+    // at the end of the import statements. example "import <modulename> 6.5" -> "import <modulename>"
+    QDirIterator it2(tempDirPath, {"*.qml"}, QDir::Files, QDirIterator::Subdirectories);
+
+    printLog("Files in temporary directory: " + tempDirPath);
+    while (it2.hasNext()) {
+        const QString filePath = it2.next();
+        QFile file(filePath);
+        // set file permissions to read and write
+        file.setPermissions(QFile::ReadOwner | QFile::WriteOwner);
+        if (!file.open(QIODevice::ReadWrite)) {
+            printErr("Could not open file: " + filePath);
+            return "";
+        }
+
+        const QRegularExpression importRegExp("import\\s+\\S+\\s+6\\.[5-9]");
+        QString content = QString::fromUtf8(file.readAll());
+        while (content.contains(importRegExp)) {
+            const QRegularExpressionMatch match = importRegExp.match(content);
+            const QStringList textList = match.capturedTexts();
+
+            for (const QString &text : textList) {
+                const QString newText = QString(text).remove(QRegularExpression("\\s+6\\.[5-9]"));
+                printLog("Found text to replace: " + text + " with " + newText + " in file "
+                         + filePath);
+                content.replace(text, newText);
+            }
+        }
+
+        file.resize(0);
+        file.write(content.toUtf8());
+        file.close();
+    }
+
+    // return the temporary directory path
+    return tempDirPath;
 }
 
 QString DesignViewer::findFile(const QString &dir, const QString &filter)
@@ -246,6 +323,16 @@ bool DesignViewer::runProject(const QByteArray &projectData, const QString &proj
     printLog("Original project name: " + projectName);
     printLog("New project name: " + newProjectName);
 
+    // list all files in the project location
+    // QDirIterator it(projectLocation,
+    //                 QDir::AllEntries | QDir::NoDotAndDotDot,
+    //                 QDirIterator::Subdirectories);
+    // printLog("Files in project location: " + projectLocation);
+    // while (it.hasNext()) {
+    //     const QString filePath = it.next();
+    //     printLog("Found file: " + filePath);
+    // }
+
     QString mainQmlFilePath;
     QStringList importPaths;
 
@@ -277,9 +364,8 @@ bool DesignViewer::runProject(const QByteArray &projectData, const QString &proj
     printLog("Found mainQmlFile: " + mainQmlFilePath);
 
     QUrl mainQmlUrl = QUrl::fromUserInput(mainQmlFilePath);
-    QFile file(mainQmlUrl.path().prepend(":"));
-    if (!file.open(QIODevice::ReadOnly))
-    {
+    QFile file(mainQmlUrl.path());
+    if (!file.open(QIODevice::ReadOnly)) {
         printErr("Could not open mainQmlfile for reading! " + file.fileName() + ": " + file.errorString());
         return false;
     }