Merge V4

spark-update-tool/src/downloadmanager.h

@@ -0,0 +1,29 @@
+#ifndef DOWNLOADMANAGER_H
+#define DOWNLOADMANAGER_H
+
+#include <QObject>
+#include <QMap>
+#include <QProcess>
+
+class DownloadManager : public QObject
+{
+    Q_OBJECT
+public:
+    explicit DownloadManager(QObject *parent = nullptr);
+    ~DownloadManager();
+    void startDownload(const QString &packageName, const QString &url, const QString &outputPath);
+    void cancelDownload(const QString &packageName);
+    bool isDownloading(const QString &packageName) const;
+
+signals:
+    void downloadProgress(const QString &packageName, int progress);
+    void downloadFinished(const QString &packageName, bool success);
+
+private:
+    void cleanupTempFiles();
+    void removeAria2Files(const QString &filePath);
+
+    QMap<QString, QProcess*> m_processes;
+};
+
+#endif // DOWNLOADMANAGER_H