#include "main.h"

using namespace daisy;

int main(void) {
  patch.Init();
  sample_rate = patch.AudioSampleRate();
  selected_menu = left_menu;
  droplet_left = GetDroplet(DropletState::kFull,
			    selected_menu->GetState());
 
  patch.StartAdc();
  patch.StartAudio(AudioThrough);
  
  while(true) {
    ProcessControls();
    ProcessOled();
    ProcessOutputs();
  }
}

void ProcessControls() {
  patch.ProcessAnalogControls();
  patch.encoder.Debounce();
  // Handle menu interactions
  if (selected_menu->InMenu()) {
    selected_menu->UpdateMenuPosition();
    // Handle menu selection
    if (patch.encoder.RisingEdge()) {
      selected_menu->SetInMenu(false);
      selected_menu->Select();
      // Split selected
      if(selected_menu->GetState() == MenuState::kSplit) {
	manager->ToggleSplit();
	left_menu->UpdateMenuState();
	right_menu->UpdateMenuState();
	// Enable split
	if (manager->GetSplitMode()) {
	  droplet_left->UpdateState(DropletState::kLeft);
	  droplet_right = GetDroplet(DropletState::kRight,
				     left_menu->GetBufferState());
	}
	// Merge
	else {
	  if (selected_menu == left_menu) {
	    droplet_left->UpdateState(DropletState::kFull);
	    delete droplet_right;
	  } else {
	    droplet_right->UpdateState(DropletState::kFull);
	    delete droplet_left;
	    droplet_left = droplet_right;
	    left_menu->SetState(right_menu->GetBufferState());
	    selected_menu = left_menu;
	  }
	}
      }
      // Switch side
      else if (selected_menu->GetState() == MenuState::kChange) {
	if (selected_menu == left_menu) {
	  selected_menu = right_menu;
	} else {
	  selected_menu = left_menu;
	}
      }
      // Enable new mode
      else {
	if(manager->GetSplitMode()) {
	  if (selected_menu == left_menu) {
	    delete droplet_left;
	    droplet_left = GetDroplet(DropletState::kLeft,
				      selected_menu->GetState());
	  } else {
	    delete droplet_right;
	    droplet_right = GetDroplet(DropletState::kRight,
				       selected_menu->GetState());
	  }
	} else {
	  delete droplet_left;
	  droplet_left = GetDroplet(DropletState::kFull,
				    selected_menu->GetState());
	}
      }
    }
  }
  // Check if entering menu
  else {
    if (patch.encoder.Pressed()) {
      if (patch.encoder.TimeHeldMs() > 500 &&
	  patch.encoder.TimeHeldMs() < 505) {
	selected_menu->SetInMenu(true);
      }
    }
  }
}

void ProcessOutputs() {
  if(!selected_menu->InMenu()) {
    if (manager->GetSplitMode() &&
	selected_menu == right_menu) {
      droplet_right->Control();
    } else {
      droplet_left->Control();
    }
  }
}

void ProcessOled() {
  patch.display.Fill(false);
  if (selected_menu->InMenu()) {
    selected_menu->ProcessMenuOled();
  } else {
    droplet_left->Draw();
    if (manager->GetSplitMode()) {
      droplet_right->Draw();
    }
  }
  patch.display.Update();
}

static void AudioThrough(AudioHandle::InputBuffer in,
			 AudioHandle::OutputBuffer out,
			 size_t size) {
  droplet_left->Process(in, out, size);
  if (manager->GetSplitMode()) {
    droplet_right->Process(in, out, size);
  }
}

Droplet* GetDroplet(DropletState state,
		    MenuState menu) {
  switch(menu) {
  default:
  case MenuState::kAD:
    return new ADDroplet(&patch,
			 state,
			 sample_rate);
  case MenuState::kLadderFilter:
    return new LadderFilterDroplet(&patch,
				   state,
				   sample_rate);
  case MenuState::kLFO:
    return new LFODroplet(&patch,
			  state,
			  sample_rate);
  case MenuState::kMixer:
    return new MixerDroplet(&patch,
			    state);
  case MenuState::kNoise:
    return new NoiseDroplet(&patch,
			    state);
    case MenuState::kSequencer:
    return new SequencerDroplet(&patch,
				state,
				sample_rate);
  case MenuState::kVCA:
    return new VCADroplet(&patch,
			  state);
  case MenuState::kVCO:
    return new VCODroplet(&patch,
			  state,
			  sample_rate);
}
}