#include <QStringList>

#include "config_adapter.h"
#include "Emu/system_config.h"

LOG_CHANNEL(cfg_log, "CFG");

// Helper methods to interact with YAML and the config settings.
namespace cfg_adapter
{
	static cfg::_base& get_cfg(cfg::_base& root, const std::string& name)
	{
		if (root.get_type() == cfg::type::node)
		{
			for (const auto& pair : static_cast<cfg::node&>(root).get_nodes())
			{
				if (pair.first == name)
				{
					return *pair.second;
				}
			}
		}

		fmt::throw_exception("Node not found: %s", name);
	}

	static cfg::_base& get_cfg(cfg::_base& root, cfg_location::const_iterator begin, cfg_location::const_iterator end)
	{
		return begin == end ? root : get_cfg(get_cfg(root, *begin), begin + 1, end);
	}

	YAML::Node get_node(const YAML::Node& node, cfg_location::const_iterator begin, cfg_location::const_iterator end)
	{
		if (begin == end)
		{
			return node;
		}

		if (!node || !node.IsMap())
		{
			cfg_log.fatal("Node error. A cfg_location does not match its cfg::node");
			return YAML::Node();
		}

		return get_node(node[*begin], begin + 1, end); // TODO
	}

	YAML::Node get_node(const YAML::Node& node, cfg_location loc)
	{
		return get_node(node, loc.cbegin(), loc.cend());
	}

	QStringList get_options(cfg_location location)
	{
		QStringList values;
		auto begin = location.cbegin();
		auto end = location.cend();
		for (const auto& v : cfg_adapter::get_cfg(g_cfg, begin, end).to_list())
		{
			values.append(QString::fromStdString(v));
		}
		return values;
	}
	
	static bool get_is_dynamic(cfg_location location)
	{
		auto begin = location.cbegin();
		auto end = location.cend();
		return cfg_adapter::get_cfg(g_cfg, begin, end).get_is_dynamic();
	}
	
	bool get_is_dynamic(emu_settings_type type)
	{
		const cfg_location loc = settings_location[type];
		return get_is_dynamic(loc);
	}

	std::string get_setting_name(emu_settings_type type)
	{
		const cfg_location loc = settings_location[type];
		return loc[loc.size() - 1];
	}
}