feat: show loading progress in modman

src/ModMan/Context/FastFileContext.cpp

@@ -4,6 +4,40 @@
 #include "Web/UiCommunication.h"
 #include "ZoneLoading.h"
 
+#include <filesystem>
+
+namespace fs = std::filesystem;
+
+namespace
+{
+    constexpr double MIN_PROGRESS_TO_REPORT = 0.005;
+
+    class EventProgressReporter : public ProgressCallback
+    {
+    public:
+        explicit EventProgressReporter(std::string zoneName)
+            : m_zone_name(std::move(zoneName)),
+              m_last_progress(0)
+        {
+        }
+
+        void OnProgress(const size_t current, const size_t total) override
+        {
+            const double percentage = static_cast<double>(current) / static_cast<double>(total);
+
+            if (percentage - m_last_progress >= MIN_PROGRESS_TO_REPORT)
+            {
+                m_last_progress = percentage;
+                ui::NotifyZoneLoadProgress(m_zone_name, percentage);
+            }
+        }
+
+    private:
+        std::string m_zone_name;
+        double m_last_progress;
+    };
+} // namespace
+
 void FastFileContext::Destroy()
 {
     // Unload all zones
@@ -12,7 +46,7 @@ void FastFileContext::Destroy()
 
 result::Expected<Zone*, std::string> FastFileContext::LoadFastFile(const std::string& path)
 {
-    auto zone = ZoneLoading::LoadZone(path, std::nullopt);
+    auto zone = ZoneLoading::LoadZone(path, std::make_unique<EventProgressReporter>(fs::path(path).filename().replace_extension().string()));
     if (!zone)
         return result::Unexpected(std::move(zone.error()));
 

src/ModMan/Web/Binds/ZoneBinds.cpp

@@ -7,6 +7,15 @@
 
 namespace
 {
+    class ZoneLoadProgressDto
+    {
+    public:
+        std::string zoneName;
+        double percentage;
+    };
+
+    NLOHMANN_DEFINE_TYPE_EXTENSION(ZoneLoadProgressDto, zoneName, percentage);
+
     class ZoneLoadedDto
     {
     public:
@@ -71,6 +80,15 @@ namespace
 
 namespace ui
 {
+    void NotifyZoneLoadProgress(std::string zoneName, const double percentage)
+    {
+        const ZoneLoadProgressDto dto{
+            .zoneName = std::move(zoneName),
+            .percentage = percentage,
+        };
+        Notify(*ModManContext::Get().m_main_webview, "zoneLoadProgress", dto);
+    }
+
     void NotifyZoneLoaded(std::string zoneName, std::string fastFilePath)
     {
         const ZoneLoadedDto dto{

src/ModMan/Web/Binds/ZoneBinds.h

@@ -4,6 +4,7 @@
 
 namespace ui
 {
+    void NotifyZoneLoadProgress(std::string zoneName, double percentage);
     void NotifyZoneLoaded(std::string zoneName, std::string fastFilePath);
     void NotifyZoneUnloaded(std::string zoneName);