#include "config.h"
#include "sequencer.h"
#include <LCDMenuLib2.h>
#include <LiquidCrystal_I2C.h>

extern LCDMenuLib2 LCDML;
extern LiquidCrystal_I2C lcd;
extern config_t configuration;
extern void handleNoteOn(byte , byte , byte );
extern void handleNoteOff(byte , byte , byte );
extern void UI_func_sequencer(uint8_t);
extern const char* seq_find_shortname(uint8_t);

void sequencer(void)
{
  bool seq_noteoffsent = false;

  if (seq_note_in > 0 && seq_recording == false && seq_active_track == 3  && seq_note_in < 71) {
    handleNoteOff(configuration.dexed[0].midi_channel, seq_data[3][seq_step_timer] + seq_transpose , 0);
    handleNoteOff(configuration.dexed[0].midi_channel, seq_data[3][seq_step_timer - 1] + seq_transpose , 0);

    seq_transpose = seq_note_in - 6 * 12 + 3;
    seq_note_in = 0;
  }

  if (seq_millis_timer  > seq_timer_previous + 136)

  {
    seq_timer_previous = seq_millis_timer;

    if (LCDML.FUNC_getID() == LCDML.OTHER_getIDFromFunction(UI_func_sequencer)) {

      //write to sequencer if in sequencer menu 
      if (seq_note_in > 0 && seq_recording == true) {

        if (seq_active_track == 3) handleNoteOff(configuration.dexed[0].midi_channel, seq_data[3][seq_step_timer] + seq_transpose , 0);

        seq_data[seq_active_track][seq_step_timer] = seq_note_in;
        seq_vel[seq_active_track][seq_step_timer] = seq_note_in_velocity;
        seq_note_in = 0;
        seq_note_in_velocity=0;
      }
      lcd.setCursor(seq_step_timer, 1);
      lcd.print("X");
      if (seq_step_timer == 0) {
        lcd.setCursor(15, 1);
        lcd.print(seq_find_shortname(15));
      }
      else
      {
        lcd.setCursor(seq_step_timer - 1, 1);
        lcd.print(seq_find_shortname(seq_step_timer - 1));
      }
    }

    //loop for drum track 0-2

    for (uint8_t d = 0; d < 3; d++)
    {
      if (seq_data[ seq_patternchain[seq_chain_active_step][d] ][seq_step_timer] > 0 && seq_vel[ seq_patternchain[seq_chain_active_step][d] ][seq_step_timer] > 0)
      {
       handleNoteOn(DRUM_MIDI_CHANNEL, seq_data[ seq_patternchain[seq_chain_active_step][d] ][seq_step_timer] , seq_vel[ seq_patternchain[seq_chain_active_step][d] ][seq_step_timer]);
      }
    }

    // instrument track
    if (seq_data[ seq_patternchain[seq_chain_active_step][3] ][seq_step_timer] > 0)  //test instrument sequencer Instance=0
    {
      handleNoteOn(configuration.dexed[0].midi_channel, seq_data[ seq_patternchain[seq_chain_active_step][3] ][seq_step_timer] + seq_transpose , seq_vel[ seq_patternchain[seq_chain_active_step][3] ][seq_step_timer]);
    seq_prev_note=seq_data[ seq_patternchain[seq_chain_active_step][3] ][seq_step_timer] + seq_transpose;
    }

    seq_noteoffsent = false;
    seq_step_timer++;

    if (seq_step_timer > 15) {
      seq_step_timer = 0;
      if (seq_chain_lenght>0){
         seq_chain_active_step++;
         if (seq_chain_active_step>seq_chain_lenght)
         {
          seq_chain_active_step=0;
           }
         }
      }
  }

  if (seq_millis_timer > seq_timer_previous + 80 && seq_noteoffsent == false)
  {
        if ( seq_prev_note > 0)  //test instrument sequencer Instance=0
        {
          handleNoteOff(configuration.dexed[0].midi_channel, seq_prev_note , 0);
         }
    seq_noteoffsent = true;
  }
}