#pragma once
#include "prism/scene.hpp"
#include <span>
#include <filesystem>

namespace prism {

// A value owns the complete RGB image. A span is only a temporary borrowed view.
struct Image {
    std::uint32_t width{}, height{};
    std::vector<std::uint8_t> rgb;
    [[nodiscard]] std::span<const std::uint8_t> pixels() const & noexcept { return rgb; }
    std::span<const std::uint8_t> pixels() const && = delete;
};

[[nodiscard]] std::expected<Image, Error> render(const Scene& scene);
[[nodiscard]] std::expected<void, Error> write_ppm(const std::filesystem::path& path,
                                                    const Image& image);
} // namespace prism