#pragma once

#include <filesystem>
#include <optional>
#include <string>

#include <nlohmann/json.hpp>

/// The CLI's own, global state: where it lives and what the user configured.
namespace breeze
{

	/// $BREEZE_HOME, or ~/.breeze. Holds config.json, the installed CLI versions (cli/), the SDK
	/// snapshots (sdk/) and cached indexes.
	std::filesystem::path breezeHome();

	/// The keys of config.json. Each can also come from the environment (BREEZE_EDITOR,
	/// BREEZE_SDK_SOURCE, BREEZE_CLI_SOURCE), which wins.
	namespace config
	{
		inline constexpr const char* Editor = "editor";
		inline constexpr const char* SdkSource = "sdkSource";
		inline constexpr const char* CliSource = "cliSource";
	}

	class GlobalConfig
	{
	public:
		/// Reads config.json (an absent file is an empty configuration).
		static GlobalConfig load();

		/// The environment's value for the key if set, else the file's.
		[[nodiscard]] std::optional<std::string> effective(const std::string& key) const;

		/// The file's value only.
		[[nodiscard]] std::optional<std::string> stored(const std::string& key) const;

		void set(const std::string& key, const std::string& value);
		void erase(const std::string& key);
		void save() const;

	private:
		nlohmann::json m_data = nlohmann::json::object();
	};

}