Centralize legacy brush package import

src/legacy_brush_package_import_services.cpp

@@ -0,0 +1,48 @@
+#include "pch.h"
+
+#include "legacy_brush_package_import_services.h"
+
+#include "app.h"
+#include "node_panel_brush.h"
+
+#include <string>
+#include <thread>
+
+namespace pp::panopainter {
+namespace {
+
+class LegacyBrushPackageImportServices final : public pp::app::BrushPackageImportServices {
+public:
+    explicit LegacyBrushPackageImportServices(App& app) noexcept
+        : app_(app)
+    {
+    }
+
+    void import_brush_package(pp::app::BrushPackageImportKind kind, std::string_view path) override
+    {
+        auto presets = app_.presets;
+        const auto path_string = std::string(path);
+        if (kind == pp::app::BrushPackageImportKind::abr) {
+            std::thread(&NodePanelBrushPreset::import_abr, presets, path_string).detach();
+            return;
+        }
+
+        std::thread(&NodePanelBrushPreset::import_ppbr, presets, path_string).detach();
+    }
+
+private:
+    App& app_;
+};
+
+} // namespace
+
+pp::foundation::Status execute_legacy_brush_package_import(
+    App& app,
+    pp::app::BrushPackageImportKind kind,
+    std::string_view path)
+{
+    LegacyBrushPackageImportServices services(app);
+    return pp::app::execute_brush_package_import(kind, path, services);
+}
+
+} // namespace pp::panopainter