#define DIM 6
#include <FastLED.h>
#define NUM_LEDS 4
#define NUM_RING 16
#define PIN_RING 9
#define PIN_LEDS 8



CRGB leds[NUM_LEDS];
CRGB ring[NUM_RING];

const uint8_t button[DIM] {2, 3, 4, 5, 6, 7};

bool trackRecorded[3]{false, false, false};
bool pressed[DIM] {false, false, false, false, false, false};
bool anyTrackSelected = false;
int lastPressed = 0;//Ne manca ovviamente uno per il progetto finale
bool state[DIM] {0, 0, 0, 0, 0, 0};
bool oldState[DIM] {HIGH, HIGH, HIGH, HIGH, HIGH, HIGH};
uint8_t cont[DIM] {0, 0, 0, 0, 0, 0};


uint8_t modal = 0;
uint8_t ringUpdate = 0;

bool modeEffects = true;



void setup()
{
  
  FastLED.addLeds<WS2812, PIN_RING, GRB>(ring, NUM_RING);
  FastLED.addLeds<WS2812, PIN_LEDS, GRB>(leds, NUM_LEDS);
  for (uint8_t i=0; i<DIM; i++){
   pinMode(button[i],INPUT_PULLUP); 
  }
  fill_solid (ring, NUM_RING, CRGB::Black);
  FastLED.show();
  Serial.begin(9600);
}

                            
  
bool timer(uint16_t interval){
  bool ret = false;
  static unsigned long previousMillis, currentMillis;
  currentMillis = millis() - previousMillis;
  
  if (currentMillis >= interval){
    previousMillis = millis();
    ret = true;
  }
  return ret;
}

bool timer2(uint16_t interval){
  bool ret = false;
  static unsigned long previousMillis, currentMillis;
  currentMillis = millis() - previousMillis;
  
  if (currentMillis >= interval){
    previousMillis = millis();
    ret = true;
  }
  return ret;
}

void ring_Circle(uint32_t color){
static uint8_t position = 0;
if (timer2(60)){
position++;
}
if (position >= NUM_RING) {
  position = 0;
}
for(int i = 0; i < NUM_RING; i++ ) {
fadeToBlackBy( ring, NUM_RING, 2); // 10 = long trail, 1 = short trail
ring[position] += color; 
FastLED.show();
}
}


void ring_colors(){
  switch (ringUpdate){

    default:
    fill_solid (ring, NUM_RING, CRGB::White);
    FastLED.show();
    modal = 0;
    break;

    case 1: 
    fill_solid (ring, NUM_RING, CRGB::Red);
    FastLED.show();
    modal = 1;
    break;

    case 2:
    ring_Circle(CRGB::Green);
    modal = 2;
    break;

    case 3:
    ring_Circle(CRGB::Red);
    FastLED.show();
    modal = 3;
    break;

    case 4:
    ring_Circle(CRGB::FairyLightNCC);
    FastLED.show();
    modal = 4;
    break;
  }
}


void mode(){
 state[1] = digitalRead(button[1]);
  
  if ((state[1]==LOW) && (oldState[1]==HIGH)){
    if (timer(50)){
    state[1] = digitalRead(button[1]);
    pressed[1]=true;
      if (++cont[1]>2) cont[1] = 1;
    }
  }
 oldState[1] = state[1];
}



void track_1(){
  state[2] = digitalRead(button[2]);

    if((state[2]==LOW) && (oldState[2]==HIGH)){
      if (timer(50)){
        state[2] = digitalRead(button[2]);

        pressed[2]=true;
        lastPressed = 1;
        anyTrackSelected = true;
      }
        
        if ((cont[1]==0) && (pressed[2]==true)){
          pressed[2]=true;
          pressed[3]=false;
          pressed[4]=false;
        }
        if ((cont[1]>=1) && (pressed[2]==true)){
        pressed[2]=true;
        } 
    }
  oldState[2] = state[2];
}


void track_2(){
  state[3] = digitalRead(button[3]);

    if((state[3]==LOW) && (oldState[3]==HIGH)){
      if (timer(50)){
        state[3] = digitalRead(button[3]);

        pressed[3]=true;
        lastPressed = 2;
        anyTrackSelected=true;
      }
        if ((cont[1]==0) && (pressed[3]==true)){
          pressed[2]=false;
          pressed[3]=true;
          pressed[4]=false;
        }
        if ((cont[1]>=1) && (pressed[3]==true)){
          pressed[3]=true;
        }
    }
  oldState[3] = state[3];
}


void track_3(){
  state[4] = digitalRead(button[4]);

    if((state[4]==LOW) && (oldState[4]==HIGH)){
      if (timer(50)){
        state[4] = digitalRead(button[4]);

        pressed[4]=true;
        lastPressed = 3;
        anyTrackSelected=true;
        }
        if ((cont[1]==0) && (pressed[4]==true)){
          pressed[2]=false;
          pressed[3]=false;
          pressed[4]=true;
        }
        if ((cont[1]>=1) && (pressed[4]==true)){
          pressed[4]=true;
        }
    }
  oldState[4] = state[4];
}



void set_tracksColors(){
    if (modal == 0) {             //default case
      if (lastPressed==1){
        leds[0] = CRGB::White;
        leds[1] = CRGB::Black;
        leds[2] = CRGB::Black;
      }
      if (lastPressed==2){
        leds[0] = CRGB::Black;
        leds[1] = CRGB::White;
        leds[2] = CRGB::Black;
      }
      if (lastPressed==3){
        leds[0] = CRGB::Black;
        leds[1] = CRGB::Black;
        leds[2] = CRGB::White;
      }
      if (lastPressed==0){
        leds[0] = CRGB::Black;
        leds[1] = CRGB::Black;
        leds[2] = CRGB::Black;
      }
      FastLED.show();
    }

    if (cont[1] == 1) {           //REC case

        //Track one Recording
        if ((lastPressed==1) && (pressed[2]==true) && (pressed[3]==false) && (pressed[4]==false)) {
          leds[0] = CRGB::Red;
          leds[1] = CRGB::Black;
          leds[2] = CRGB::Black;
        }
        if ((lastPressed==1) && (pressed[2]==true) && (pressed[3]==true) && (pressed[4]==false)){
          leds[0] = CRGB::Red;
          leds[1] = CRGB::Green;
          leds[2] = CRGB::Black;
        }
        if ((lastPressed==1) && (pressed[2]==true) && (pressed[3]==false) && (pressed[4] == true)){
          leds[0] = CRGB::Red;
          leds[1] = CRGB::Black;
          leds[2] = CRGB::Green;
        }
        if ((lastPressed==1) && (pressed[2]==true) && (pressed[3]==true) && (pressed[4]==true)){
          leds[0] = CRGB::Red;
          leds[1] = CRGB::Green;
          leds[2] = CRGB::Green;
        }

        //Track two Recording
        if ((lastPressed==2) && (pressed[2]==false) && (pressed[3]==true) && (pressed[4]==false)){
          leds[0] = CRGB::Black;
          leds[1] = CRGB::Red;
          leds[2] = CRGB::Black;
        }
        if ((lastPressed==2) && (pressed[2]==true) && (pressed[3]==true) && (pressed[4]==false)){
          leds[0] = CRGB::Green;
          leds[1] = CRGB::Red;
          leds[2] = CRGB::Black;
        }
        if ((lastPressed==2) && (pressed[2]==false) && (pressed[3]==true) && (pressed[4]==true)){
          leds[0] = CRGB::Black;
          leds[1] = CRGB::Red;
          leds[2] = CRGB::Green;
        }
        if ((lastPressed==2) && (pressed[2]==true) && (pressed[3]==true) && (pressed[4]==true)){
          leds[0] = CRGB::Green;
          leds[1] = CRGB::Red;
          leds[2] = CRGB::Green;
        }

        //Track three Recording
        if ((lastPressed==3) && (pressed[2]==false) && (pressed[3]==false) && (pressed[4]==true)){
          leds[0] = CRGB::Black;
          leds[1] = CRGB::Black;
          leds[2] = CRGB::Red;
        }
        if ((lastPressed==3) && (pressed[2]==true) && (pressed[3]==false) && (pressed[4]==true)){
          leds[0] = CRGB::Green;
          leds[1] = CRGB::Black;
          leds[2] = CRGB::Red;
        }
        if((lastPressed==3) && (pressed[2]==false) && (pressed[3]==true) && (pressed[4]==true)){
          leds[0] = CRGB::Black;
          leds[1] = CRGB::Green;
          leds[2] = CRGB::Red;
        }
        if ((lastPressed==3) && (pressed[2]==true) && (pressed[3]==true) && (pressed[4]==true)){
          leds[0] = CRGB::Green;
          leds[1] = CRGB::Green;
          leds[2] = CRGB::Red;
        }
    }

    if (modal==2){              //PLAY case

        //Track one Selected
        if ((lastPressed==1) && (pressed[2]==true) && (pressed[3]==false) && (pressed[4]==false)) {
          leds[0] = CRGB::White;
          leds[1] = CRGB::Black;
          leds[2] = CRGB::Black;
        }
        if ((lastPressed==1) && (pressed[2]==true) && (pressed[3]==true) && (pressed[4]==false)){
          leds[0] = CRGB::White;
          leds[1] = CRGB::Green;
          leds[2] = CRGB::Black;
        }
        if ((lastPressed==1) && (pressed[2]==true) && (pressed[3]==false) && (pressed[4] == true)){
          leds[0] = CRGB::White;
          leds[1] = CRGB::Black;
          leds[2] = CRGB::Green;
        }
        if ((lastPressed==1) && (pressed[2]==true) && (pressed[3]==true) && (pressed[4]==true)){
          leds[0] = CRGB::White;
          leds[1] = CRGB::Green;
          leds[2] = CRGB::Green;
        }

        //Track two Selected
        if ((lastPressed==2) && (pressed[2]==false) && (pressed[3]==true) && (pressed[4]==false)){
          leds[0] = CRGB::Black;
          leds[1] = CRGB::White;
          leds[2] = CRGB::Black;
        }
        if ((lastPressed==2) && (pressed[2]==true) && (pressed[3]==true) && (pressed[4]==false)){
          leds[0] = CRGB::Green;
          leds[1] = CRGB::White;
          leds[2] = CRGB::Black;
        }
        if ((lastPressed==2) && (pressed[2]==false) && (pressed[3]==true) && (pressed[4]==true)){
          leds[0] = CRGB::Black;
          leds[1] = CRGB::White;
          leds[2] = CRGB::Green;
        }
        if ((lastPressed==2) && (pressed[2]==true) && (pressed[3]==true) && (pressed[4]==true)){
          leds[0] = CRGB::Green;
          leds[1] = CRGB::White;
          leds[2] = CRGB::Green;
        }

        //Track three Selected
        if ((lastPressed==3) && (pressed[2]==false) && (pressed[3]==false) && (pressed[4]==true)){
          leds[0] = CRGB::Black;
          leds[1] = CRGB::Black;
          leds[2] = CRGB::White;
        }
        if ((lastPressed==3) && (pressed[2]==true) && (pressed[3]==false) && (pressed[4]==true)){
          leds[0] = CRGB::Green;
          leds[1] = CRGB::Black;
          leds[2] = CRGB::White;
        }
        if((lastPressed==3) && (pressed[2]==false) && (pressed[3]==true) && (pressed[4]==true)){
          leds[0] = CRGB::Black;
          leds[1] = CRGB::Green;
          leds[2] = CRGB::White;
        }
        if ((lastPressed==3) && (pressed[2]==true) && (pressed[3]==true) && (pressed[4]==true)){
          leds[0] = CRGB::Green;
          leds[1] = CRGB::Green;
          leds[2] = CRGB::White;
        }
    }
  FastLED.show();
}
  
void play(){
  static uint8_t cases = 0; 
   
   if(pressed[1]==true && cont[1]==1){
     switch (cases){

       default:
       ringUpdate = 1;
       break;

       case 1:
       ringUpdate = 3;
       break;

       case 2:
       ringUpdate = 4;
       break;
     }
   }
   if(pressed[1]==true && cont[1]==2){
     switch (cases){

       default:
       ringUpdate = 2;
       break;
     }
   }

  if ((pressed[1]) && (anyTrackSelected)){
    state[0] = digitalRead(button[0]);

      if(state[0]==LOW && oldState[0]==HIGH){
        if(timer(50)){
          state[0] = digitalRead(button[0]);
          pressed[0]=true;

          if(lastPressed==1){
            if(trackRecorded[0]==false){
              Serial.println("Registro per la prima volta la traccia 1");
              cases = 1;
            }
            if(trackRecorded[0]==true){
              if(++cont[0] > 2) {cont[0] = 1;}

                switch(cont[0]){
                  
                  case 1: 
                  Serial.println("Overdub sulla traccia 1");
                  cases = 2;
                  break;

                  case 2:
                  Serial.println("Stop overdub traccia 1");
                  cases = 0;
                  break;
                }
            }
            trackRecorded[0] = true;
          }

          if(lastPressed==2){
            if(trackRecorded[1]==false){
              Serial.println("Registro per la prima volta la traccia 1");
              cases = 1;
            }
            if(trackRecorded[1]==true){
              if(++cont[0] > 2) {cont[0] = 1;}

                switch(cont[0]){
                  
                  case 1: 
                  Serial.println("Overdub sulla traccia 2");
                  cases = 2;
                  break;

                  case 2:
                  Serial.println("Stop overdub traccia 2");
                  cases = 0;
                  break;
                }
            }
            trackRecorded[1]=true;
          }

          if(lastPressed==3){
            if(trackRecorded[2]==false){
              Serial.println("Registro per la prima volta la traccia 1");
              cases = 1;
            }
            if(trackRecorded[2]==true){
              if(++cont[0] > 2) {cont[0] = 1;}

                switch(cont[0]){
                  
                  case 1: 
                  Serial.println("Overdub sulla traccia 3");
                  cases = 2;
                  break;

                  case 2:
                  Serial.println("Stop overdub traccia 3");
                  cases = 0;
                  break;
                }
            }
            trackRecorded[2]=true;
          }

        }
      }
  }
  oldState[0] = state[0];
}


void blink(){
  static bool blinkLeds = false;
  if (timer(800)){
    blinkLeds = !blinkLeds;
  }
  if (blinkLeds==true){
    leds[0] = CRGB::Red;
    FastLED.show();
  }
  if (blinkLeds==false){
    leds[0] = CRGB::Black;
    FastLED.show();
  }
}

/*void play(){

  if ((pressed[1]) && (anyTrackSelected)){
    state[0] = digitalRead(button[0]);
    if  ((state[0]==LOW) && (oldState[0])==HIGH){
      if(timer(50)){
        state[0] = digitalRead(button[0]);
        pressed[0]=true;
         if (cont[1]==1){
           if (lastPressed==1){
             if (trackRecorded[0]==false){
               modeEffects = false; 
               Serial.println("Registro per la prima volta traccia 1");
               ringUpdate = 3;
             }
             if (trackRecorded[0]==true){
               if(++cont[0] > 2) {cont[0] = 1;}
                
                  switch(cont[0]){
                
                case 1:
               Serial.println("Overdub sulla traccia 1");
               ringUpdate = 4;
               break;

               case 2: 
               Serial.println("Stop overdub traccia 2");
               ringUpdate = 1;
               break;
                  }
             }
             trackRecorded[0]=true;
           }
            
            if (lastPressed==2){
             if (trackRecorded[1]==false){
               Serial.println("Registro per la prima volta traccia 2");
             }
             if (trackRecorded[1]==true){
               Serial.println("Overdub sulla traccia 2");
             }
             trackRecorded[1]=true;
           }

           if (lastPressed==3){
             if (trackRecorded[2]==false){
               Serial.println("Registro per la prima volta traccia 3");
             }
             if (trackRecorded[2]==true){
               Serial.println("Overdub sulla traccia 3");
             }
             trackRecorded[2]=true;
           }
         }
                               
         if (modal=2){
          Serial.println("Play, ring circle verde");
          FastLED.show();
         }
    }
  }
 }
  oldState[0] = state[0];
}
*/

void clear(){
  static unsigned long previousMillis, currentMillis;
  state[5] = digitalRead(button[5]);

  if(state[5]==LOW && oldState[5]==HIGH){
    previousMillis = millis();
  }
  if(state[5]==HIGH && oldState[5]==LOW){
    // Il pulsante è stato rilasciato
    currentMillis  = millis() - previousMillis;
    
    if (currentMillis >= 1000){
      
    }
  }
  oldState[5] = state[5];
}

void loop()
{
  clear();
	mode();
  play();
  track_1();
  track_2();
  track_3();
  set_tracksColors();
  ring_colors();
}