#pragma once

#include "config.h"

#include <chrono>
#include <deque>
#include <utility>

#include <boost/signals2.hpp>

class UI
{
public:
  using clock_type = std::chrono::high_resolution_clock;

  UI(Config& config);

  void draw();

  // signals
  boost::signals2::signal<void()> bpm_plus;
  boost::signals2::signal<void()> bpm_minus;
  boost::signals2::signal<void()> note_set_from_midi;
  boost::signals2::signal<void()> mode;

  // slots
  void count_main_loops();
  void slot_active_sensing();
  void slot_midi_note(int channel, int note, uint64_t timestamp);

private:
  Config& m_config;

  int get_main_loops_per_second();

  uint64_t m_main_loops;
  uint64_t m_main_loops_checkpoint;
  std::chrono::time_point<clock_type> m_main_loops_timestamp;

  std::chrono::time_point<clock_type> m_active_sensing_timestamp;

  uint64_t m_midi_timestamp;
  std::deque<std::pair<int,int>> m_midi_monitor;
};