#ifndef INCLUDE_MESH_DATA_IMPLEMENTATION
#	error Never include this file directly include 'mesh_data.hpp'
#endif

namespace zgl
{
inline mesh_data::mesh_data(
	const GLuint vertex_vbo_id,
	const GLuint index_vbo_id,
	const GLuint vao_id,
	const ztu::u32 material_id,
	const mesh_vertex_components::flags components,
	const GLsizei index_count
) :
	m_handle{
		.vao_id = vao_id,
		.index_count = index_count
	},
	m_vertex_vbo_id{ vertex_vbo_id },
	m_index_vbo_id{ index_vbo_id },
	m_material_id{ material_id },
	m_component_types{ components } {}

inline mesh_data& mesh_data::operator=(mesh_data&& other) noexcept
{
	if (&other != this)
	{
		this->~mesh_data();

		m_handle = other.m_handle;
		m_vertex_vbo_id = other.m_vertex_vbo_id;
		m_index_vbo_id = other.m_index_vbo_id;
		m_material_id = other.m_material_id;
		m_component_types = other.m_component_types;

		other.m_handle.vao_id = 0;
		other.m_handle.index_count = 0;
		other.m_vertex_vbo_id = 0;
		other.m_index_vbo_id = 0;
		other.m_material_id = 0;
		other.m_component_types = mesh_vertex_components::flags::none;
	}

	return *this;
}

inline mesh_data::mesh_data(mesh_data&& other) noexcept :
	m_handle{ other.m_handle },
	m_vertex_vbo_id{ other.m_vertex_vbo_id },
	m_index_vbo_id{ other.m_index_vbo_id },
	m_material_id{ other.m_material_id },
	m_component_types{ other.m_component_types }
{
	other.m_handle.vao_id = 0;
	other.m_handle.index_count = 0;
	other.m_vertex_vbo_id = 0;
	other.m_index_vbo_id = 0;
	other.m_material_id = 0;
	other.m_component_types = mesh_vertex_components::flags::none;
}

inline mesh_data::~mesh_data() {
	if (m_vertex_vbo_id) {
		glDeleteBuffers(1, &m_vertex_vbo_id);
	}
	if (m_index_vbo_id) {
		glDeleteBuffers(1, &m_index_vbo_id);
	}
	if (m_handle.vao_id) {
		glDeleteVertexArrays(1, &m_handle.vao_id);
	}
}


inline mesh_handle mesh_data::handle() const
{
	return m_handle;
}

inline mesh_vertex_components::flags mesh_data::components() const
{
	return m_component_types;
}

inline ztu::u32 mesh_data::material_id() const
{
	return m_material_id;
}

}