#ifndef LOVE_GRAPHICS_VULKAN_SHADER_H
#define LOVE_GRAPHICS_VULKAN_SHADER_H

#include <graphics/Shader.h>
#include <graphics/vulkan/ShaderStage.h>
#include <vulkan/vulkan.h>

#include <map>


namespace love {
	namespace graphics {
		namespace vulkan {
			class Shader final : public graphics::Shader {
			public:
				Shader(StrongRef<love::graphics::ShaderStage> stages[]);
				virtual ~Shader() = default;

				const std::vector<VkPipelineShaderStageCreateInfo>& getShaderStages() const {
					return shaderStages;
				}

				void attach() override {}

				ptrdiff_t getHandle() const { return 0; }

				std::string getWarnings() const override { return ""; }

				int getVertexAttributeIndex(const std::string& name) override;

				const UniformInfo* getUniformInfo(const std::string& name) const override { return nullptr; }
				const UniformInfo* getUniformInfo(BuiltinUniform builtin) const override { return nullptr;  }

				void updateUniform(const UniformInfo* info, int count) override {}

				void sendTextures(const UniformInfo* info, graphics::Texture** textures, int count) override {}
				void sendBuffers(const UniformInfo* info, love::graphics::Buffer** buffers, int count) override {}

				bool hasUniform(const std::string& name) const override { return false; }

				void setVideoTextures(graphics::Texture* ytexture, graphics::Texture* cbtexture, graphics::Texture* crtexture) override {}

				struct UniformBufferObject {
					float windowWidth;
					float windowHeight;
				};

			private:
				struct Vec4 {
					float x, y, z, w;
				};
				
				struct LoveUniformsPerDraw {
					Vec4 uniformsPerDraw[13];
				};

				std::vector<VkPipelineShaderStageCreateInfo> shaderStages;

				std::map<std::string, int> vertexAttributeIndices = {
					{ "VertexPosition", 0 },
					{ "VertexTexCoord", 1 },
					{ "VertexColor", 2 }
				};

				std::map<std::string, int> uniformBindings = {
					{ "love_UniformsPerDraw", 0 },
					{ "love_VideoYChannel", 1 },
					{ "love_VideoCbChannel", 2 },
					{ "love_VideoCrChannel", 3 },
					{ "MainTex", 4 }
				};


			};
		}
	}
}

#endif