#pragma once

#include <cstdint>
#include <optional>

#include <vamp_protocol/page_control.hpp>


namespace vamp_protocol {

class gesture_state {
public:
  auto update(std::bool_t touching, std::uint64_t now_ms) -> std::optional<vamp_protocol::page_command>;
  auto reset() -> void;
  auto pending_deadline() const -> std::optional<std::uint64_t>;
private:
  std::bool_t touching_{};
  std::bool_t hold_sent_{};
  std::bool_t pending_tap_{};
  std::uint64_t down_ms_{};
  std::uint64_t last_up_ms_{};
};

}