#pragma once

#include <array>
#include <cstdint>
#include <span>
#include <string_view>

namespace pp::renderer::gl {

struct OpenGlRuntime {
    bool desktop_gl = false;
    bool gles = false;
    bool web = false;
};

struct OpenGlCapabilities {
    bool framebuffer_fetch = false;
    bool map_buffer_alignment = false;
    bool float32_textures = false;
    bool float32_linear = false;
    bool float16_textures = false;
};

struct OpenGlPixelFormat {
    std::uint32_t internal_format = 0;
    std::uint32_t pixel_format = 0;
    std::uint32_t channel_count = 0;
};

struct OpenGlTextureParameter {
    std::uint32_t name = 0;
    std::uint32_t value = 0;
};

[[nodiscard]] OpenGlCapabilities detect_opengl_capabilities(
    std::span<const std::string_view> extensions,
    OpenGlRuntime runtime) noexcept;

[[nodiscard]] std::uint32_t texture_upload_type_for_internal_format(std::uint32_t internal_format) noexcept;
[[nodiscard]] OpenGlPixelFormat texture_format_for_channel_count(std::uint32_t channel_count) noexcept;
[[nodiscard]] const char* framebuffer_status_name(std::uint32_t status) noexcept;
[[nodiscard]] std::uint32_t index_type_for_index_size(std::uint32_t index_size_bytes) noexcept;
[[nodiscard]] std::uint32_t primitive_mode_for_fill_count(std::uint32_t vertex_or_index_count) noexcept;
[[nodiscard]] std::uint32_t primitive_mode_for_stroke_count(std::uint32_t vertex_or_index_count) noexcept;
[[nodiscard]] std::span<const std::uint32_t> panopainter_cube_face_texture_targets() noexcept;
[[nodiscard]] std::uint32_t cube_face_texture_target(std::uint32_t face_index) noexcept;
[[nodiscard]] std::span<const OpenGlTextureParameter> default_render_target_texture_parameters() noexcept;
[[nodiscard]] std::array<OpenGlTextureParameter, 5> sampler_parameters_for_filter_wrap(
    std::uint32_t filter,
    std::uint32_t wrap) noexcept;
[[nodiscard]] std::array<OpenGlTextureParameter, 2> sampler_filter_parameters(
    std::uint32_t filter_min,
    std::uint32_t filter_mag) noexcept;

}