#pragma once

#include <cmath>
#include <ranges>

#include <Gamma/Oscillator.h>
#include <Gamma/Delay.h>

#include <halp/compat/gamma.hpp>
#include <halp/audio.hpp>
#include <halp/controls.hpp>
#include <halp/mappers.hpp>
#include <halp/meta.hpp>

namespace Ottobit
{
class Senior
{
#define BITS 16
#define RATE 64

public:
  halp_meta(name, "Senior")
  halp_meta(category, "Audio")
  halp_meta(c_name, "senior")
  halp_meta(uuid, "fe8425d7-64d3-4b8b-a652-1d80026edc8b")

  // Define inputs and outputs ports.
  // See the docs at https://github.com/celtera/avendish
  struct ins
  {
    halp::dynamic_audio_bus<"Input", double> audio;
    halp::knob_f32<"SAMPLE RATE", halp::range{.min = .1, .max = 1., .init = 1.}> s_rate;

    using log_map = halp::log_mapper<std::ratio<95, 100>>;
    struct : halp::knob_f32<"BITS", halp::range{.min = 3, .max = BITS, .init = BITS}>
    {
      using mapper = log_map;
    } bits;
    struct : halp::knob_f32<"FREQ", halp::range{.min = .4, .max = 200., .init = 5.}>
    {
      using mapper = log_map;
    } freq;

    halp::knob_f32<"DEPTH", halp::range{.min = 0., .max = 1., .init = 0.}> depth;
    halp::knob_f32<"AM/RING/FM", halp::range{.min = 0., .max = 2., .init = 0.}> am_fm;
  } inputs;

  struct
  {
    halp::dynamic_audio_bus<"Output", double> audio;
  } outputs;

  using setup = halp::setup;
  void prepare(setup info)
  {
    // Initialization, this method will be called with buffer size, etc.
    set_bit_factor();
    lfo.set_sample_rate(info.rate);
    lfo.freq(5);

    skipped_frames.resize(info.input_channels);
    fms.resize(info.input_channels);

    for (auto& fm : fms)
    {
      fm.set_sample_rate(info.rate);
      fm.maxDelay(0.1);
    }

    phases.resize(info.output_channels);

    float phase_frac{1.f / info.output_channels};

    for (int i{0}; i < info.output_channels; i++)
    {
      phases[i] = i * phase_frac;
    }
  }

  // Do our processing for N samples
  using tick = halp::tick;

  // Defined in the .cpp
  void operator()(tick t);

  // UI is defined in another file to keep things clear.
  struct ui;

private:
  int bit_factor, step_size{0};


  double
      previous_bits{BITS},
      previous_rate{1},
      previous_depth{0},
      previous_am_fm{0},
      am_amp{0},
      fm_amp{0};

  std::vector<float> phases;
  std::vector<int> skipped_frames;

  std::vector<gam::Delay<double,
                         gam::ipl::Linear,
                         halp::compat::gamma_domain>> fms;

  gam::LFO<gam::phsInc::Loop, halp::compat::gamma_domain> lfo{5.};

  void set_bit_factor();
  double crush(const double& f);
};

} // namespace Ottobit