/**
 * @file mesh_controller.hpp
 * @author Piotr Krygier (piotr.krygier@meshsystems.com)
 * @brief
 * @version 0.1
 * @date 2023-03-29
 *
 * @copyright Copyright (c) 2023
 *
 */

#ifndef RSE_MESH_CONTROLLER_HPP
#define RSE_MESH_CONTROLLER_HPP

#include <cstdint>
#include <memory>
#include <vector>
#include <map>

#include "vulkan_commons.hpp"

namespace rse::graphics::mesh
{

/* Forward declarations */
struct MeshInstance;

struct MeshInstance
{
    uint32_t instance_id;
    InstanceData instance_data;
};

struct Mesh
{
    uint32_t unique_id;
    const std::vector<rse::graphics::vulkanbase::Vertex> vertices;
    std::vector<uint16_t> indices;
    std::map<uint16_t, std::unique_ptr<MeshInstance>> instances;
};


/**
 * @brief Create a new mesh for provided vertices and indices.
 *
 * @param vertices vector of vertices
 * @param indices indices for mesh
 * @return uint16_t Mesh identifier. Can be useful for getting vertices, indices and instances
 */
uint16_t create_mesh(std::vector<rse::graphics::vulkanbase::Vertex> vertices,
                     std::vector<uint16_t> indices);

/**
 * @brief Create a instance for the selected mesh. Instance can have its own location, rotation and scale
 *
 * @param mesh_id Mesh id
 * @param instance_data Transformation info
 */
void create_mesh_instance(uint16_t mesh_id,
                          InstanceData instance_data);

std::vector<rse::graphics::vulkanbase::Vertex> get_mesh_vertices(uint16_t mesh_id);
std::vector<uint16_t> get_mesh_indices(uint16_t mesh_id);
std::vector<InstanceData> get_instance_data_for_mesh(uint16_t mesh_id);


} // namespace rse::graphics::mesh



#endif