#include "test_harness.hpp"

#ifdef COOP_TEST_HARNESS

#include <fstream>

#include <windows.h>

namespace coop
{
namespace
{
std::wstring temp_file(const wchar_t* name)
{
	wchar_t dir[MAX_PATH] = {};
	const DWORD n = GetTempPathW(MAX_PATH, dir);
	return (n != 0 && n < MAX_PATH) ? std::wstring(dir) + name : std::wstring(name);
}
} // namespace

void TestHarness::init()
{
	cmd_path_ = temp_file(L"coop_test_cmd.txt");
	resp_path_ = temp_file(L"coop_test_resp.txt");
	DeleteFileW(cmd_path_.c_str()); // drop any stale command from a previous run
	DeleteFileW(resp_path_.c_str());
}

std::string TestHarness::poll_command()
{
	std::ifstream f(cmd_path_.c_str()); // MSVC accepts a wide path
	if (!f)
	{
		return {};
	}
	std::string line;
	std::getline(f, line);
	f.close();
	DeleteFileW(cmd_path_.c_str()); // ack: the command has been taken
	return line;
}

void TestHarness::write_response(const std::string& resp)
{
	std::ofstream f(resp_path_.c_str(), std::ios::trunc);
	f << resp;
}

} // namespace coop

#endif // COOP_TEST_HARNESS