Add functionality to retrieve plugin information

Added a new method to retrieve plugin information, such as name and
version, from loaded plugins. This feature is helpful for adding
debugging and traceability to code generated by 3D slicing. The
information is added to the GCode file header, allowing tracking which
plugins were used during slicing process.

Contribute to CURA-11212

include/plugins/pluginproxy.h

@@ -165,6 +165,11 @@ class PluginProxy
     }
     ~PluginProxy() = default;
 
+    [[nodiscard]] const std::optional<plugin_metadata>& getPluginInfo() const noexcept
+    {
+        return plugin_info_;
+    }
+
     value_type generate(auto&&... args)
     {
         agrpc::GrpcContext grpc_context;

include/plugins/slotproxy.h

@@ -104,6 +104,15 @@ class SlotProxy
             plugin_.value().template broadcast<S>(std::forward<decltype(args)>(args)...);
         }
     }
+
+    [[nodiscard]] const std::optional<plugin_metadata> getPluginInfo() const noexcept
+    {
+        if (plugin_.has_value())
+        {
+            return plugin_->getPluginInfo();
+        }
+        return std::nullopt;
+    }
 };
 
 } // namespace cura::plugins

include/plugins/slots.h

@@ -21,6 +21,13 @@
 #include "utils/polygon.h"
 #include "utils/types/char_range_literal.h"
 
+#include <range/v3/view/any_view.hpp>
+#include <range/v3/view/concat.hpp>
+#include <range/v3/view/join.hpp>
+#include <range/v3/view/remove_if.hpp>
+#include <range/v3/view/single.hpp>
+#include <range/v3/view/transform.hpp>
+
 #include <exception>
 #include <memory>
 #include <tuple>
@@ -132,6 +139,21 @@ class Registry<Typelist<>, Unit>
     constexpr void broadcast([[maybe_unused]] auto&&... args) noexcept
     {
     } // Base case, do nothing
+
+    ranges::any_view<plugin_metadata> getConnectedPluginInfo()
+    {
+        return ranges::views::single(std::optional<plugin_metadata>{ std::nullopt })
+             | ranges::views::remove_if(
+                   [](const auto& plugin_info)
+                   {
+                       return ! plugin_info.has_value();
+                   })
+             | ranges::views::transform(
+                   [](const auto& plugin_info)
+                   {
+                       return plugin_info.value();
+                   });
+    }
 };
 
 template<typename T, typename... Types, template<typename> class Unit>
@@ -179,6 +201,22 @@ class Registry<Typelist<T, Types...>, Unit> : public Registry<Typelist<Types...>
         Base::template broadcast<S>(std::forward<decltype(args)>(args)...);
     }
 
+    ranges::any_view<plugin_metadata> getConnectedPluginInfo()
+    {
+        ranges::any_view<plugin_metadata> plugin_info_view = ranges::views::single(value_.proxy.getPluginInfo())
+                                                           | ranges::views::remove_if(
+                                                                 [](const auto& plugin_info)
+                                                                 {
+                                                                     return ! plugin_info.has_value();
+                                                                 })
+                                                           | ranges::views::transform(
+                                                                 [](const auto& plugin_info)
+                                                                 {
+                                                                     return plugin_info.value();
+                                                                 });
+        return ranges::views::concat(Base::getConnectedPluginInfo(), plugin_info_view);
+    }
+
 protected:
     template<v0::SlotID S>
     constexpr auto& get_type()

src/gcodeExport.cpp

@@ -13,7 +13,10 @@
 #include "settings/types/LayerIndex.h"
 #include "utils/Date.h"
 #include "utils/string.h" // MMtoStream, PrecisionedDouble
+#include "plugins/slots.h"
 
+#include <range/v3/view/transform.hpp>
+#include <fmt/ranges.h>
 #include <spdlog/spdlog.h>
 
 #include <assert.h>
@@ -205,6 +208,7 @@ std::string GCodeExport::getFileHeader(
     std::ostringstream prefix;
 
     const size_t extruder_count = Application::getInstance().current_slice->scene.extruders.size();
+    auto used_plugins = slots::instance().getConnectedPluginInfo() | ranges::views::transform([](const auto& plugin_info){ return fmt::format("{}: {}", plugin_info.plugin_name, plugin_info.plugin_version); });
     switch (flavor)
     {
     case EGCodeFlavor::GRIFFIN:
@@ -262,6 +266,7 @@ std::string GCodeExport::getFileHeader(
         prefix << ";PRINT.SIZE.MAX.Y:" << INT2MM(total_bounding_box.max.y) << new_line;
         prefix << ";PRINT.SIZE.MAX.Z:" << INT2MM(total_bounding_box.max.z) << new_line;
         prefix << ";SLICE_UUID:" << slice_uuid_ << new_line;
+        prefix << fmt::format(";ENGINE_PLUGINS:{}{}", used_plugins, new_line);
         prefix << ";END_OF_HEADER" << new_line;
         break;
     default:
@@ -309,6 +314,7 @@ std::string GCodeExport::getFileHeader(
         prefix << ";MAXX:" << INT2MM(total_bounding_box.max.x) << new_line;
         prefix << ";MAXY:" << INT2MM(total_bounding_box.max.y) << new_line;
         prefix << ";MAXZ:" << INT2MM(total_bounding_box.max.z) << new_line;
+        prefix << fmt::format(";ENGINE_PLUGINS:{}{}", used_plugins, new_line);
     }
 
     return prefix.str();