Title.mpp

module;

#include <cstdio>

#include <CppUtils/System/Windows.hpp>

export module CppUtils.Terminal.Title;

import std;
import CppUtils.Terminal.RawTerminal;
import CppUtils.String.Concept;
import CppUtils.String.Utility;
import CppUtils.Terminal.TextModifier;

export namespace CppUtils::Terminal
{
	inline auto getTerminalTitle() -> auto
	{
#if defined(OS_WINDOWS)
		auto title = std::wstring{};
		constexpr auto size = 256uz;
		title.resize(size);
		::GetConsoleTitleW(std::data(title), size);
		return title;
#elif defined(OS_LINUX) or defined(OS_MACOS)
		/*
		using namespace std::literals;

		auto rawTerminal = RawTerminal{};
		std::fwrite("\033]21;?\a", 1, 7, stdout);
		std::fflush(stdout);

		const auto response = rawTerminal.read('\a');
		if (constexpr auto prefix = "\033]21;"sv; response.starts_with(prefix))
			return std::string{std::cbegin(response) + std::size(prefix), std::cend(response)};
		*/
		return std::string{};
#endif
	}

	inline auto setTerminalTitle(const String::GenericText auto& title) -> void
	{
#if defined(OS_WINDOWS)
		::SetConsoleTitleW(std::data(title));
#elif defined(OS_LINUX) or defined(OS_MACOS)
		std::print(Ansi::EscapeCode::SetTitle, title);
		std::fflush(stdout);
#endif
	}

	class Title final
	{
	public:
		inline Title(const String::GenericText auto& title):
			m_oldTitle{getTerminalTitle()}
		{
			setTerminalTitle(title);
		}

		inline ~Title()
		{
			setTerminalTitle(m_oldTitle);
		}

	private:
		std::invoke_result_t<decltype(getTerminalTitle)> m_oldTitle;
	};
}