NOISSUE put legacy FTB support in a namespace, fix its base URL

api/logic/modplatform/legacy_ftb/PackInstallTask.h

@@ -0,0 +1,52 @@
+#pragma once
+#include "InstanceTask.h"
+#include "net/NetJob.h"
+#include "quazip.h"
+#include "quazipdir.h"
+#include "meta/Index.h"
+#include "meta/Version.h"
+#include "meta/VersionList.h"
+#include "PackHelpers.h"
+
+namespace LegacyFTB {
+
+class MULTIMC_LOGIC_EXPORT PackInstallTask : public InstanceTask
+{
+    Q_OBJECT
+
+public:
+    explicit PackInstallTask(Modpack pack, QString version);
+    virtual ~PackInstallTask(){}
+
+    bool abort() override;
+
+protected:
+    //! Entry point for tasks.
+    virtual void executeTask() override;
+
+private:
+    void downloadPack();
+    void unzip();
+    void install();
+
+private slots:
+    void onDownloadSucceeded();
+    void onDownloadFailed(QString reason);
+    void onDownloadProgress(qint64 current, qint64 total);
+
+    void onUnzipFinished();
+    void onUnzipCanceled();
+
+private: /* data */
+    bool abortable = false;
+    std::unique_ptr<QuaZip> m_packZip;
+    QFuture<QStringList> m_extractFuture;
+    QFutureWatcher<QStringList> m_extractFutureWatcher;
+    NetJobPtr netJobContainer;
+    QString archivePath;
+
+    Modpack m_pack;
+    QString m_version;
+};
+
+}