#pragma once

#include <windows.h>

class UniqueHandle
{
public:
	explicit UniqueHandle(HANDLE handle = NULL) : mHandle(handle) {}
	~UniqueHandle() { reset(); }

	UniqueHandle(const UniqueHandle&) = delete;
	UniqueHandle& operator=(const UniqueHandle&) = delete;

	UniqueHandle(UniqueHandle&& other) noexcept : mHandle(other.release()) {}

	UniqueHandle& operator=(UniqueHandle&& other) noexcept
	{
		if (this != &other)
			reset(other.release());
		return *this;
	}

	HANDLE get() const { return mHandle; }
	bool valid() const { return mHandle != NULL && mHandle != INVALID_HANDLE_VALUE; }

	HANDLE release()
	{
		HANDLE handle = mHandle;
		mHandle = NULL;
		return handle;
	}

	void reset(HANDLE handle = NULL)
	{
		if (valid())
			CloseHandle(mHandle);
		mHandle = handle;
	}

private:
	HANDLE mHandle;
};