#pragma once

#include <array>
#include <cstdint>

#include <vamp_pico/artwork.hpp>
#include <vamp_pico/http_client.hpp>
#include <vamp_style.hpp>


namespace vamp_pico {

constexpr auto display_width = std::int32_t{320};
constexpr auto display_height = std::int32_t{240};

enum class link_status { CONNECTING,
                         OFFLINE,
                         CONNECTED,
                         ERROR };

class display {
public:
  auto init() -> void;
  auto show_remote(link_status link, remote_display_state const &state, std::bool_t busy = false) -> void;
  auto accept_title(std::string_view identifier, std::string_view image) -> std::bool_t;
  auto reject_title(std::string_view identifier) -> void;
  auto title_ready() const -> std::bool_t;
  // At most four scanlines per call, with an 8 ms minimum write interval.
  auto poll(std::uint64_t now_ms) -> void;
private:
  auto dirty(std::size_t begin, std::size_t end) -> void;
  title_cache title_{};
  std::array<std::bool_t, display_height> dirty_{};
  link_status link_{link_status::CONNECTING};
  std::bool_t active_{};
  std::bool_t busy_{};
  sprite part_{sprite::COUNT};
  std::uint32_t page_{};
  std::uint32_t pages_{};
  std::uint64_t last_write_ms_{};
  std::size_t next_row_{};
};

}