#pragma once

#include "GLUtil.h"
#include "BuiltinPipeline.h"
#include "WithCamera.h"
#include "SunShaderProgram.h"
#include "SunBatch.h"

namespace charcoal
{
	namespace builtin
	{
		namespace sun
		{
			// 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 set_sun_direction(const vec3& direction)
				{
					m_sun_direction = direction;
				}

				void set_sun_color(const Color& color)
				{
					m_sun_color = color;
				}

			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:
				vec3 m_sun_direction;
				Color m_sun_color;
			};
		}
	}
}