From 73fb99753304e4c1668050e3e483c5038e5407d5 Mon Sep 17 00:00:00 2001
From: Albin Johansson <albinoscar99@hotmail.com>
Date: Wed, 17 Jul 2024 20:44:35 +0200
Subject: [PATCH] Add metadata conversion function

---
 source/core/CMakeLists.txt                 |  1 +
 source/core/inc/tactile/core/meta/meta.hpp | 32 ++++++++++++++++++++
 source/core/src/tactile/core/meta/meta.cpp | 34 ++++++++++++++++++++++
 source/core/test/CMakeLists.txt            |  2 +-
 4 files changed, 68 insertions(+), 1 deletion(-)
 create mode 100644 source/core/src/tactile/core/meta/meta.cpp

diff --git a/source/core/CMakeLists.txt b/source/core/CMakeLists.txt
index 89d66c657d..dd44e4f682 100644
--- a/source/core/CMakeLists.txt
+++ b/source/core/CMakeLists.txt
@@ -66,6 +66,7 @@ target_sources(tactile-core
                "src/tactile/core/map/map_spec.cpp"
                "src/tactile/core/meta/attribute_type.cpp"
                "src/tactile/core/meta/color.cpp"
+               "src/tactile/core/meta/meta.cpp"
                "src/tactile/core/model/model.cpp"
                "src/tactile/core/model/settings.cpp"
                "src/tactile/core/numeric/random.cpp"
diff --git a/source/core/inc/tactile/core/meta/meta.hpp b/source/core/inc/tactile/core/meta/meta.hpp
index 61775e90d7..a3e6e51cad 100644
--- a/source/core/inc/tactile/core/meta/meta.hpp
+++ b/source/core/inc/tactile/core/meta/meta.hpp
@@ -7,10 +7,17 @@
 #include "tactile/base/container/string_map.hpp"
 #include "tactile/base/meta/attribute.hpp"
 #include "tactile/base/prelude.hpp"
+#include "tactile/core/entity/entity.hpp"
 #include "tactile/core/util/uuid.hpp"
 
 namespace tactile {
 
+class Registry;
+
+namespace ir {
+struct Metadata;
+}  // namespace ir
+
 /**
  * Represents an attribute bundle.
  *
@@ -35,4 +42,29 @@ struct CMeta final
   HashMap<UUID, AttributeBundle> components;
 };
 
+/**
+ * Indicates whether an entity is a meta context.
+ *
+ * \param registry The associated registry.
+ * \param id       The target entity identifier.
+ *
+ * \return
+ * True if the entity is a meta context; false otherwise.
+ */
+[[nodiscard]]
+auto is_meta(const Registry& registry, EntityID id) -> bool;
+
+/**
+ * Converts IR metadata to the internal representation and adds it to a context.
+ *
+ * \pre The entity identifier must reference a meta context.
+ *
+ * \param registry    The associated registry.
+ * \param meta_id     The meta context entity identifier.
+ * \param ir_metadata The source metadata representation.
+ */
+void convert_ir_metadata(Registry& registry,
+                         EntityID meta_id,
+                         const ir::Metadata& ir_metadata);
+
 }  // namespace tactile
diff --git a/source/core/src/tactile/core/meta/meta.cpp b/source/core/src/tactile/core/meta/meta.cpp
new file mode 100644
index 0000000000..326db013b3
--- /dev/null
+++ b/source/core/src/tactile/core/meta/meta.cpp
@@ -0,0 +1,34 @@
+// Copyright (C) 2024 Albin Johansson (GNU General Public License v3.0)
+
+#include "tactile/core/meta/meta.hpp"
+
+#include "tactile/base/io/save/ir.hpp"
+#include "tactile/core/debug/assert.hpp"
+#include "tactile/core/entity/registry.hpp"
+
+namespace tactile {
+
+auto is_meta(const Registry& registry, const EntityID id) -> bool
+{
+  return registry.has<CMeta>(id);
+}
+
+void convert_ir_metadata(Registry& registry,
+                         const EntityID meta_id,
+                         const ir::Metadata& ir_metadata)
+{
+  TACTILE_ASSERT(is_meta(registry, meta_id));
+
+  auto& meta = registry.get<CMeta>(meta_id);
+  meta.name = ir_metadata.name;
+
+  for (const auto& [prop_name, prop_value] : ir_metadata.properties) {
+    meta.properties.insert_or_assign(prop_name, prop_value);
+  }
+
+  for (const auto& [comp_name, comp_attributes] : ir_metadata.components) {
+    // TODO
+  }
+}
+
+}  // namespace tactile
diff --git a/source/core/test/CMakeLists.txt b/source/core/test/CMakeLists.txt
index ceab67eac3..e749687661 100644
--- a/source/core/test/CMakeLists.txt
+++ b/source/core/test/CMakeLists.txt
@@ -53,7 +53,7 @@ target_sources(tactile-core-test
 tactile_prepare_target(tactile-core-test)
 
 target_link_libraries(tactile-core-test
-                      PUBLIC
+                      PRIVATE
                       tactile::core
                       GTest::gtest
                       )