#pragma once

#include <cstddef>
#include <vector>

#include "glad/glad.h"

namespace cbt::opengl {

enum class buffer_type {
    vertex = GL_ARRAY_BUFFER,
    index = GL_ELEMENT_ARRAY_BUFFER,
    uniform = GL_UNIFORM_BUFFER,
    storage = GL_SHADER_STORAGE_BUFFER,
};

class buffer {
    GLuint m_id = 0;
    buffer_type m_type = buffer_type::vertex;

public:
    buffer();
    explicit buffer(buffer_type type);
    ~buffer();

    buffer(const buffer&) = delete;
    buffer& operator=(const buffer&) = delete;

    buffer(buffer&& other) noexcept;
    buffer& operator=(buffer&& other) noexcept;

    auto bind() const -> void;
    auto unbind() const -> void;
    auto upload(const void* data, size_t size) -> void;
    auto upload(std::vector<uint8_t> data) -> void;
    auto upload_dynamic(const void* data, size_t size) -> void;
    auto id() const -> GLuint;
    auto valid() const -> bool;
};

}