Lighting: Fix config.toml load/save logic

Changelog.md

@@ -12,6 +12,7 @@
 - 60FPS: Refactor 60FPS battle menu fix and fix ESUI compatibility ( https://github.com/julianxhokaxhiu/FFNx/pull/597 )
 - Ambient: Allow ambient effects to playback in fields that use movies as background
 - Core: Add additional main models eye-to-model mapping
+- Lighting: Fix [`config.toml`](https://github.com/julianxhokaxhiu/FFNx/blob/master/misc/FFNx.lighting.toml) load/save logic
 - Renderer: Fix black color in some field maps (`spipe2` for example) ( https://github.com/julianxhokaxhiu/FFNx/pull/587 )
 
 ## FF8

src/lighting.cpp

@@ -56,12 +56,13 @@ auto Lighting::getConfigEntry(char *key)
 {
 	std::string groupKey = getConfigGroup();
 
-	if (groupKey.empty())
-		return config[key];
-	else if (config.contains(groupKey))
-		return config[groupKey][key];
-	else
-		return toml::v3::node_view<toml::v3::node>();
+	if (!groupKey.empty() && config.contains(groupKey))
+	{
+		auto ret = config[groupKey][key];
+		if (ret) return ret;
+	}
+
+	return config[key];
 }
 
 void Lighting::loadConfig()
@@ -83,13 +84,15 @@ void Lighting::setConfigEntry(const char *key, auto value)
 {
 	std::string groupKey = getConfigGroup();
 
-	if (groupKey.empty())
-		config.insert_or_assign(key, value);
-	else if (config.contains(groupKey))
-		config[groupKey].as_table()->insert_or_assign(key, value);
+	if (!groupKey.empty())
+	{
+		if (config.contains(groupKey))
+			config[groupKey].as_table()->insert_or_assign(key, value);
+		else
+			config.insert_or_assign(groupKey, toml::table{ {key, value} });
+	}
 	else
-		config.insert_or_assign(groupKey, toml::table{
-																					{key, value}});
+		config.insert_or_assign(key, value);
 }
 
 void Lighting::initParamsFromConfig()