#include "cbt/opengl/vao.hpp"

namespace cbt::opengl {

vao::vao() {
    glGenVertexArrays(1, &m_id);
}

vao::~vao() {
    if (m_id) {
        glDeleteVertexArrays(1, &m_id);
    }
}

vao::vao(vao&& other) noexcept
    : m_id(other.m_id) {
    other.m_id = 0;
}

vao& vao::operator=(vao&& other) noexcept {
    if (this != &other) {
        if (m_id) {
            glDeleteVertexArrays(1, &m_id);
        }
        m_id = other.m_id;
        other.m_id = 0;
    }
    return *this;
}

auto vao::bind() const -> void {
    glBindVertexArray(m_id);
}

auto vao::unbind() const -> void {
    glBindVertexArray(0);
}

auto vao::id() const -> GLuint {
    return m_id;
}

auto vao::valid() const -> bool {
    return m_id != 0;
}

}