/* Copyright (C) 2024 Wildfire Games.
 * This file is part of 0 A.D.
 *
 * 0 A.D. is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 2 of the License, or
 * (at your option) any later version.
 *
 * 0 A.D. is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with 0 A.D.  If not, see <http://www.gnu.org/licenses/>.
 */

#ifndef INCLUDED_RENDERER_BACKEND_DUMMY_DEVICE
#define INCLUDED_RENDERER_BACKEND_DUMMY_DEVICE

#include "renderer/backend/dummy/DeviceForward.h"
#include "renderer/backend/IDevice.h"

#include <memory>
#include <string>
#include <vector>

class CShaderDefines;

namespace Renderer
{

namespace Backend
{

namespace Dummy
{

class CDeviceCommandContext;

class CDevice : public IDevice
{
public:
	CDevice();
	~CDevice() override;

	Backend GetBackend() const override { return Backend::DUMMY; }

	const std::string& GetName() const override { return m_Name; }
	const std::string& GetVersion() const override { return m_Version; }
	const std::string& GetDriverInformation() const override { return m_DriverInformation; }
	const std::vector<std::string>& GetExtensions() const override { return m_Extensions; }

	void Report(const ScriptRequest& rq, JS::HandleValue settings) override;

	std::unique_ptr<IDeviceCommandContext> CreateCommandContext() override;

	std::unique_ptr<IGraphicsPipelineState> CreateGraphicsPipelineState(
		const SGraphicsPipelineStateDesc& pipelineStateDesc) override;

	std::unique_ptr<IComputePipelineState> CreateComputePipelineState(
		const SComputePipelineStateDesc& pipelineStateDesc) override;

	std::unique_ptr<IVertexInputLayout> CreateVertexInputLayout(
		const PS::span<const SVertexAttributeFormat> attributes) override;

	std::unique_ptr<ITexture> CreateTexture(
		const char* name, const ITexture::Type type, const uint32_t usage,
		const Format format, const uint32_t width, const uint32_t height,
		const Sampler::Desc& defaultSamplerDesc, const uint32_t MIPLevelCount, const uint32_t sampleCount) override;

	std::unique_ptr<ITexture> CreateTexture2D(
		const char* name, const uint32_t usage,
		const Format format, const uint32_t width, const uint32_t height,
		const Sampler::Desc& defaultSamplerDesc, const uint32_t MIPLevelCount = 1, const uint32_t sampleCount = 1) override;

	std::unique_ptr<IFramebuffer> CreateFramebuffer(
		const char* name, SColorAttachment* colorAttachment,
		SDepthStencilAttachment* depthStencilAttachment) override;

	std::unique_ptr<IBuffer> CreateBuffer(
		const char* name, const IBuffer::Type type, const uint32_t size, const uint32_t usage) override;

	std::unique_ptr<IShaderProgram> CreateShaderProgram(
		const CStr& name, const CShaderDefines& defines) override;

	bool AcquireNextBackbuffer() override;

	IFramebuffer* GetCurrentBackbuffer(
		const AttachmentLoadOp, const AttachmentStoreOp,
		const AttachmentLoadOp, const AttachmentStoreOp) override;

	void Present() override;

	void OnWindowResize(const uint32_t width, const uint32_t height) override;

	bool IsTextureFormatSupported(const Format format) const override;

	bool IsFramebufferFormatSupported(const Format format) const override;

	Format GetPreferredDepthStencilFormat(
		const uint32_t usage, const bool depth, const bool stencil) const override;

	const Capabilities& GetCapabilities() const override { return m_Capabilities; }

protected:

	std::string m_Name;
	std::string m_Version;
	std::string m_DriverInformation;
	std::vector<std::string> m_Extensions;

	std::unique_ptr<IFramebuffer> m_Backbuffer;

	Capabilities m_Capabilities{};
};

} // namespace Dummy

} // namespace Backend

} // namespace Renderer

#endif // INCLUDED_RENDERER_BACKEND_DUMMY_DEVICE
