#pragma once

#include "GLUtil.h"
#include "BuiltinPipeline.h"
#include "WithCamera.h"
#include "LitShaderProgram.h"
#include "LitBatch.h"

namespace charcoal
{
	namespace builtin
	{
		namespace lit
		{
			// TODO: May want to abstract this into a base pipeline class since this is the same as basic::Pipeline
			class Pipeline : public builtin::Pipeline<ShaderProgram, Batch>, public WithCamera
			{
			public:
				void reset_lights()
				{
					m_lights.clear();
				}

				void add_light(const Light& light)
				{
					m_lights.push_back(light);
				}
			protected:
				void prepare_opengl() override
				{
					glEnable(GL_DEPTH_TEST);
					glDepthFunc(GL_LESS);
				}

				void prepare_uniforms() override
				{
					glutil::uniform_matrix(0, get_camera()->get_world_to_view_matrix());
					glutil::uniform_vec3(4, get_camera()->get_position());
					glutil::uniform_uint(5, (unsigned int)m_lights.size());
					glutil::uniform_lights(6, m_lights);
				}
			private:
				std::vector<PhongLight> m_lights;
			};
		}
	}
}