#pragma once

#include "opengl/shader_program_variable.hpp"
#include <array>
#include "util/enum_bitfield_operators.hpp"

namespace shader_program::uniforms::mesh
{

enum class flags : std::uint16_t
{
	none = 0,
	mvp_matrix = 1 << 0,
	model_matrix = 1 << 1,
	point_size = 1 << 2,
	color = 1 << 3,
	tex = 1 << 4,
	view_pos = 1 << 5,
	point_light_direction = 1 << 6,
	point_light_color = 1 << 7,
	ambient_light_color = 1 << 8,
	ambient_filter = 1 << 9,
	diffuse_filter = 1 << 10,
	specular_filter = 1 << 11,
	shininess = 1 << 12
};

constexpr inline auto mvp_matrix = zgl::shader_program_variable({ GL_FLOAT_MAT4, 0 }, "mvp_matrix");
constexpr inline auto model_matrix = zgl::shader_program_variable({ GL_FLOAT_MAT4, 1 }, "model_matrix");
constexpr inline auto point_size = zgl::shader_program_variable({ GL_FLOAT, 2 }, "point_size");
constexpr inline auto tex = zgl::shader_program_variable({ GL_SAMPLER_2D, 3 }, "tex");
constexpr inline auto color = zgl::shader_program_variable({ GL_FLOAT_VEC4, 4 }, "color");
constexpr inline auto view_pos = zgl::shader_program_variable({ GL_FLOAT_VEC3, 5 }, "view_pos");
constexpr inline auto point_light_direction = zgl::shader_program_variable({ GL_FLOAT_VEC3, 6 }, "point_light_direction");
constexpr inline auto point_light_color = zgl::shader_program_variable({ GL_FLOAT_VEC3, 7 }, "point_light_color");
constexpr inline auto ambient_light_color = zgl::shader_program_variable({ GL_FLOAT_VEC3, 8 }, "ambient_light_color");
constexpr inline auto ambient_filter = zgl::shader_program_variable({ GL_FLOAT_VEC3, 9 }, "ambient_filter");
constexpr inline auto diffuse_filter = zgl::shader_program_variable({ GL_FLOAT_VEC3, 10 }, "diffuse_filter");
constexpr inline auto specular_filter = zgl::shader_program_variable({ GL_FLOAT_VEC3, 11 }, "specular_filter");
constexpr inline auto shininess = zgl::shader_program_variable({ GL_FLOAT, 12 }, "shininess");

constexpr inline auto all = std::array{
	mvp_matrix,
	model_matrix,
	point_size,
	color,
	tex,
	view_pos,
	point_light_direction,
	point_light_color,
	ambient_light_color,
	ambient_filter,
	diffuse_filter,
	specular_filter,
	shininess
};

constexpr inline auto names = std::array{
	"mvp_matrix",
	"model_matrix",
	"point_size",
	"color",
	"tex",
	"view_pos",
	"point_light_direction",
	"point_light_color",
	"ambient_light_color",
	"ambient_filter",
	"diffuse_filter",
	"specular_filter",
	"shininess"
};
}

DEFINE_ENUM_BITFIELD_OPERATORS(shader_program::uniforms::mesh::flags)