QDS-11236 Integrate with demo project endpoint

src/backend.cpp

@@ -240,17 +240,29 @@ void Backend::runDemoProject(const QString &projectName)
     qDebug() << "Checking if demo project is cached for " << projectName;
     emit popupOpen();
 
-    const bool cached = m_projectManager->isDemoProjectCached(projectName);
+    // sample project info
+    // [{"lastUpdate":1701947766739.9812,"name":"ClusterTutorial.qmlrc"}]
+    const QJsonArray projectList = m_serviceConnector->fetchUserDemoList();
+    QJsonObject projectInfo;
+    for (auto project : projectList) {
+        if (projectName == project.toObject().value("name").toString().remove(".qmlrc")) {
+            projectInfo = project.toObject();
+            break;
+        }
+    }
+
+    const bool cached = m_projectManager->isDemoProjectCached(projectInfo);
 
     if (!cached) {
         updatePopup("Downloading demo project...", false);
 
-        const QString url = "https://designviewer.qt.io/qmlprojects/" + projectName + ".qmlrc";
+        const QString url = "https://designviewer.qt.io/qmlprojects/demos/" + projectName
+                            + ".qmlrc";
         QByteArray project = m_serviceConnector->fetchProject(url);
         qDebug() << "Demo project is not cached. Trying to download from " << url << " ...";
 
         updatePopup("Caching demo project...");
-        if (!m_projectManager->cacheDemoProject(project, projectName)) {
+        if (!m_projectManager->cacheDemoProject(project, projectInfo)) {
             qCritical()
                 << "Could not cache demo project. Please check the logs for more information.";
             emit popupClose();

src/projectManager.cpp

@@ -403,8 +403,11 @@ bool ProjectManager::runCachedProject(const QJsonObject &projectInfo)
     return runProject(projectPath);
 }
 
-bool ProjectManager::cacheDemoProject(const QByteArray &projectData, const QString &projectName)
+bool ProjectManager::cacheDemoProject(const QByteArray &projectData, const QJsonObject &projectInfo)
 {
+    // sample project info
+    //[{"lastUpdate":1701947766739.9812,"name":"ClusterTutorial.qmlrc"}]
+    const QString projectName = projectInfo.value("name").toString().remove(".qmlrc");
     const QString demoProjectPath = m_demoProjectCachePath + "/" + projectName;
     qDebug() << "Caching demo project " << projectName << " to " << demoProjectPath;
 
@@ -440,6 +443,15 @@ bool ProjectManager::cacheDemoProject(const QByteArray &projectData, const QStri
             return false;
         }
     }
+
+    // write project info to cache
+    QFile demoProjectInfoFile(demoProjectPath + "/projectInfo.json");
+    if (!demoProjectInfoFile.open(QIODevice::WriteOnly)) {
+        qCritical() << "Could not open demo project info file for writing";
+        return false;
+    }
+
+    demoProjectInfoFile.write(QJsonDocument(projectInfo).toJson());
     return true;
 }
 
@@ -449,11 +461,42 @@ void ProjectManager::clearDemoCaches()
     QDir(m_demoProjectCachePath).removeRecursively();
 }
 
-bool ProjectManager::isDemoProjectCached(const QString &projectName)
+bool ProjectManager::isDemoProjectCached(const QJsonObject &projectInfo)
 {
+    // sample project info
+    //[{"lastUpdate":1701947766739.9812,"name":"ClusterTutorial.qmlrc"}]
+    const QString projectName = projectInfo.value("name").toString().remove(".qmlrc");
     const QString demoProjectPath = m_demoProjectCachePath + "/" + projectName;
     qDebug() << "Checking if demo project " << projectName << " is cached";
-    return QDir(demoProjectPath).exists();
+
+    if (!QDir(demoProjectPath).exists()) {
+        qDebug() << "Demo project " << projectName << " is not cached";
+        return false;
+    }
+
+    qDebug() << "Demo project " << projectName << " is cached. Checking the last update time...";
+    const QString demoProjectInfoPath = demoProjectPath + "/projectInfo.json";
+    QFile demoProjectInfoFile(demoProjectInfoPath);
+    if (!demoProjectInfoFile.open(QIODevice::ReadOnly)) {
+        qCritical() << "Could not open demo project info file for reading";
+        return false;
+    }
+
+    const QJsonObject cachedProjectInfo
+        = QJsonDocument::fromJson(demoProjectInfoFile.readAll()).object();
+
+    const QJsonValue cachedLastModified = cachedProjectInfo.value("lastUpdate");
+    const QJsonValue cloudLastModified = projectInfo.value("lastUpdate");
+    qDebug() << "Demo project" << projectName << "cloud timestamp: " << cloudLastModified
+             << "local timestamp:" << cachedLastModified;
+
+    if (cloudLastModified != cachedLastModified) {
+        qDebug() << "Demo project " << projectName << " is not up to date";
+        return false;
+    }
+
+    qDebug() << "Demo project " << projectName << " is up to date";
+    return true;
 }
 
 bool ProjectManager::runDemoProject(const QString &projectName)

src/projectManager.h

@@ -47,8 +47,8 @@ public:
     bool isProjectCached(const QJsonObject &projectInfo);
     bool runCachedProject(const QJsonObject &projectInfo);
 
-    bool cacheDemoProject(const QByteArray &projectData, const QString &projectName);
-    bool isDemoProjectCached(const QString &projectName);
+    bool cacheDemoProject(const QByteArray &projectData, const QJsonObject &projectInfo);
+    bool isDemoProjectCached(const QJsonObject &projectName);
     bool runDemoProject(const QString &projectName);
     void clearDemoCaches();
 

src/serviceConnector.cpp

@@ -103,3 +103,14 @@ QJsonArray ServiceConnector::fetchUserProjectList(const QString &userHash)
 
     return projectList;
 }
+
+QJsonArray ServiceConnector::fetchUserDemoList()
+{
+    auto reply = fetchResource("https://designviewer.qt.io/api/v1/demos");
+    if (reply.size() == 0) {
+        qCritical("Could not fetch available demo list");
+        return QJsonArray();
+    }
+
+    return QJsonDocument::fromJson(reply).array();
+}

src/serviceConnector.h

@@ -36,6 +36,7 @@ public:
     QByteArray fetchProject(const QString &url);
     QByteArray fetchUserProject(const QString &userHash, const QString &projectName);
     QJsonArray fetchUserProjectList(const QString &userHash);
+    QJsonArray fetchUserDemoList();
 
 private:
     QNetworkAccessManager m_manager;