#pragma once

#include <cstddef>
#include <vector>

#include "glad/glad.h"

namespace cbt::opengl {

enum class texture_target {
    _1d = GL_TEXTURE_1D,
    _2d = GL_TEXTURE_2D,
    _3d = GL_TEXTURE_3D,
    cube = GL_TEXTURE_CUBE_MAP,
};

enum class texture_format {
    rgb = GL_RGB,
    rgba = GL_RGBA,
    rg = GL_RG,
    red = GL_RED,
    depth = GL_DEPTH_COMPONENT,
};

enum class texture_type {
    ubyte = GL_UNSIGNED_BYTE,
    ushort = GL_UNSIGNED_SHORT,
    uint = GL_UNSIGNED_INT,
    float_ = GL_FLOAT,
};

class texture {
    GLuint m_id = 0;
    texture_target m_target = texture_target::_2d;

public:
    texture();
    explicit texture(texture_target target);
    ~texture();

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

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

    auto bind(GLuint unit = 0) -> void;
    auto unbind() -> void;
    auto upload(void const* data, int width, int height, texture_format format, texture_type type) -> void;
    auto set_filter(GLenum min_filter, GLenum mag_filter) -> void;
    auto set_wrap(GLenum wrap_s, GLenum wrap_t) -> void;
    auto generate_mipmaps() -> void;
    auto id() const -> GLuint;
    auto valid() const -> bool;
};

}