//======================================================================
// ubitx_iop.ino
//======================================================================

#include <Encoder.h>
#include <iopcomm.h>
#include "audio.h"
#include "config.h"
#include "ubitx_iop.h"
#include "keyer.h"
#include "menu.h"
#include "rig.h"
#include "TxSwitch.h"

Keyer keyer{15, 3.0};  // NOTE: make configurable

RigConfig rigConfig;
RigAudio rigAudio{rigConfig.audio};
basic_rig rig{rigConfig, rigAudio};

CATSwitch catPTT;
//MicSwitch micPTTHelper;
GPIOSwitch micPTT(true, MIC_PTT_PIN);
//LineSwitch linePTTHelper;
GPIOSwitch linePTT(false, LINE_PTT_PIN);

Encoder knob(ENCODER_A_PIN, ENCODER_B_PIN);
long knobPos = 0;

Bounce  btn;
elapsedMillis btnMillis;

Main_menu  main_menu(rig);
Menu_item* menu_item = &main_menu;

elapsedMillis frameMillis;
unsigned frameTime;
unsigned frameCounter;
unsigned audioProcUsage;
unsigned audioMemUsage;

//======================================================================

void setup() {
  // put your setup code here, to run once:
  initCAT(38400, SERIAL_8N1);
  USBDEBUG("setup started");

  AudioMemory(16);  // NOTE:  Need to fine tune this.  Have had errors due to this being too low.

  initKeyLine();
  rigAudio.init();

  frameCounter = 0;
  frameMillis = 0;

  knob.write(0);

  btn.attach(ENCODER_SW_PIN, INPUT_PULLUP);
  btn.interval(25);

  rig.init();

  USBDEBUG("setup completed");
}

//======================================================================

void update_io_menu(Menu_item* item, bool is_active)
{
  Menu_string text;
  
  if (!is_active || (is_active && item == nullptr)) {
    sendIOPMenuInactive();
  } else {
    item->get_text(text);
    sendIOPMenuDisplay(text.data());
  }
}

//======================================================================

void loop() 
{
  static bool menu_is_active = false;
  static bool menu_updated = false;
  
  static char frame_status[100];
  static char old_mode_text[17] = "                ";
  static bool paddle_loop = false;
//  long oldPos = knobPos;

  rig_mode oldRigMode;
  
  frameCounter++;

  if (rig.is_cw_mode()) {
    if (keyer.do_paddles()) {
      
      // Checking for T/R separately from the paddle loop, because it's
      // possible we're already transmitting (PTT/Key being held), and 
      // we don't want to run the tx() actions if we're already in TX.
      if (rig.is_rx()) {
        USBDEBUG("entered TX via paddles");
        rig.tx();
      }

      paddle_loop = true;

      if (keyer.is_down()) {
        setKeyDown();
      } else {
        setKeyUp();
      }
      
      return; // return early for paddle responsiveness
    } else {
      if (paddle_loop) {
        // If we exit the paddle loop (i.e. keyer completes its keying
        // sequence), then we'll go back to receive, even if one of the
        // PTT/Key lines is still held separately.  General principle is
        // that if "something" stops transmitting, then the rig will
        // stop transmitting.
        paddle_loop = false;
        rig.rx();
        USBDEBUG("exited TX from paddles");
      }
    }
  }

  rig.update();

  oldRigMode = rig.get_rig_mode();

  // Update the mic PTT.  We need to tell it if we're in SSB mode, so that
  // it knows if it should switch to the mic input if pressed.  We also
  // need to make it inactive if we're in DGT mode, since only CAT will be
  // used to start transmitting in that case.
  micPTT.setSSBMode(rig.is_ssb_mode());
  micPTT.update(rig.mode(), !rig.is_digi_mode());
  
  // Update the line PTT.  We need to tell it if we're in SSB mode, so that
  // it knows if it should switch to the line input if pressed.  We also
  // need to make it inactive if we're in DGT mode, since only CAT will be
  // used to start transmitting in that case.
  linePTT.setSSBMode(rig.is_ssb_mode());
  linePTT.update(rig.mode(), !rig.is_digi_mode());

  serviceCAT();

  menu_updated = false;
  btn.update();
  knobPos = knob.read();

  if (btn.fell()) {
    btnMillis = 0;
    USBDEBUG("button pressed");
    // cancel out any knob rotation that occurred during in conjunction with press/release
    knob.write(0);
  
  } else if (btn.rose()) {
    menu_updated = true;
    if (btnMillis > 1000) {
      // long press - exit
      menu_item = menu_item->exit();
      USBDEBUG("button released - long (exit)");      
    } else if (btnMillis > 500) {
      // medium press - altSelect
      if (menu_is_active) {
        menu_item = menu_item->altSelect();
      } else {
        menu_item = audio_config_menu;
        menu_is_active = true;
      }
      USBDEBUG("button released - medium (altSelect)");      
    } else {
      // short press - select
      if (menu_is_active) {
        menu_item = menu_item->select();
      } else {
        menu_item = &main_menu;
        menu_is_active = true;
      }
      USBDEBUG("button released - short (select)");      
    }    
    // cancel out any knob rotation that occurred during in conjunction with press/release
    knob.write(0);
    
  } else if (knobPos > 3 && menu_is_active) {
    // left
    menu_item = menu_item->prev();
    knob.write(0);
    menu_updated = true;
    USBDEBUG("knob turned left");    
    
  } else if (knobPos < -3 && menu_is_active) {
    // right
    menu_item = menu_item->next();
    knob.write(0);
    menu_updated = true;
    USBDEBUG("knob turned right");
  }

  if (menu_item == nullptr) {
    menu_item = &main_menu;
    menu_is_active = false;
    menu_updated = true;
    USBDEBUG("null menu - reset to main menu");
  }

  if (menu_updated) {
    update_io_menu(menu_item, menu_is_active);
    USBDEBUG("updated main menu");
  }

  rig.update();

  if (frameMillis > 5000) {
    #if defined(DEBUG)
      frameTime = frameMillis;
      audioProcUsage = AudioProcessorUsageMax();
      audioMemUsage = AudioMemoryUsageMax();
      sprintf(frame_status, "update: %u ms, %u frames, %d %% CPU max, %d %% mem max\n", frameTime, frameCounter, audioProcUsage, audioMemUsage);
      USBDEBUG(frame_status);
    #endif
    frameMillis = 0;
    frameCounter = 0;
  }
  
  //audioUpdate();  // was used to update the speech compressor
}

//======================================================================
// EOF
//======================================================================