// Copyright (c) 2016-2018 Easy2D - Nomango
// 
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
// 
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
// 
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.

#pragma once
#include "../macros.h"
#include "../common/helper.h"

namespace easy2d
{
	// 资源
	// 
	// 资源可以是文件类型，也可以是保存在 exe 中的二进制资源
	// 例如, 一份音频资源的类型为 L"WAVE", 名称标识符为 IDR_WAVE_1,
	// 那么可以这样指定该资源: Resource res(MAKEINTRESOURCE(IDR_WAVE_1), L"WAVE");
	// 
	// 了解资源的更多信息: https://docs.microsoft.com/en-us/windows/desktop/menurc/resources
	//
	class E2D_API Resource
	{
		enum class Type { File, Binary };

	public:
		Resource(
			LPCWSTR file_name		/* 文件路径 */
		);

		Resource(
			String const& file_name	/* 文件路径 */
		);

		Resource(
			LPCWSTR name,			/* 资源名称 */
			LPCWSTR type			/* 资源类型 */
		);

		Resource(
			Resource const& rhs
		);

		virtual ~Resource();

		inline bool IsFileType() const { return type_ == Type::File; }

		inline String GetFileName() const { if (file_name_) return *file_name_; return String(); }

		bool Load(
			LPVOID& buffer,
			DWORD& buffer_size
		) const;

		size_t GetHashCode() const;

		Resource& operator= (Resource const& rhs);

	private:
		Type type_;
		union
		{
			struct
			{
				String*	file_name_;
			};

			struct
			{
				LPCWSTR	bin_name_;
				LPCWSTR	bin_type_;
			};
		};
	};
}