SettingsUtil.hpp

#pragma once
#include <ranges>

constexpr auto CONFIG_NAME = L"AudioPlaybackConnector.json";
constexpr auto BUFFER_SIZE = 4096;

inline void DefaultSettings()
{
	g_reconnect = false;
	g_lastDevices.clear();
}

inline void LoadSettings()
{
	try
	{
		DefaultSettings();

		wil::unique_hfile hFile(CreateFileW((GetModuleFsPath(g_hInst).remove_filename() / CONFIG_NAME).c_str(), GENERIC_READ, FILE_SHARE_READ, nullptr, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, nullptr));
		THROW_LAST_ERROR_IF(!hFile);

		std::string string;
		while (true)
		{
			size_t size = string.size();
			string.resize(size + BUFFER_SIZE);
			DWORD read = 0;
			THROW_IF_WIN32_BOOL_FALSE(ReadFile(hFile.get(), string.data() + size, BUFFER_SIZE, &read, nullptr));
			string.resize(size + read);
			if (read == 0)
				break;
		}

		std::wstring utf16 = Utf8ToUtf16(string);
		auto jsonObj = JsonObject::Parse(utf16);
		g_reconnect = jsonObj.Lookup(L"reconnect").GetBoolean();

		auto lastDevices = jsonObj.Lookup(L"lastDevices").GetArray();
		g_lastDevices.reserve(lastDevices.Size());
		for (const auto& i : lastDevices)
		{
			if (i.ValueType() == JsonValueType::String)
				g_lastDevices.push_back(std::wstring(i.GetString()));
		}
	}
	CATCH_LOG();
}

inline void SaveSettings()
{
	try
	{
		JsonObject jsonObj;
		jsonObj.Insert(L"reconnect", JsonValue::CreateBooleanValue(g_reconnect));

		JsonArray lastDevices;
		for (const auto& key : g_audioPlaybackConnections | std::views::keys)
		{
			lastDevices.Append(JsonValue::CreateStringValue(key));
		}
		auto t = jsonObj.Insert(L"lastDevices", lastDevices);

		wil::unique_hfile hFile(CreateFileW((GetModuleFsPath(g_hInst).remove_filename() / CONFIG_NAME).c_str(), GENERIC_WRITE, FILE_SHARE_READ, nullptr, CREATE_ALWAYS, FILE_ATTRIBUTE_NORMAL, nullptr));
		THROW_LAST_ERROR_IF(!hFile);

		std::string utf8 = Utf16ToUtf8(jsonObj.Stringify());
		DWORD written = 0;
		THROW_IF_WIN32_BOOL_FALSE(WriteFile(hFile.get(), utf8.data(), static_cast<DWORD>(utf8.size()), &written, nullptr));
		THROW_HR_IF(E_FAIL, written != utf8.size());
		t = !t;
	}
	CATCH_LOG();
}