#include <LiquidCrystal.h>

LiquidCrystal lcd(0, 1, 2, 3, 4, 5);

int fader0map;
int fader1map;
int fader2map;
int fader3map;

int actualEnc;
int lastEnc;

int CH1Pan = 0;
int CH2Pan = 0;
int CH3Pan = 0;
int CH4Pan = 0;

int CH1gain = -15;
int CH2gain = -15;
int CH3gain = -15;
int CH4gain = -15;

bool page1 = true;

bool written = false;

bool pageSw = false;
bool encBtn = false;
bool encIsAtPan = true;

bool sel1 = false;
bool sel2 = false;
bool sel3 = false;
bool sel4 = false;

int selectedCH = 1;

const int analogPin = A15;
const int ledCount = 10;

int ledPins1[] = {
  22, 23, 24, 25, 26, 27, 28, 29, 30, 31
};

void setup() {
  lcd.begin(20, 4);
  lcd.setCursor(0, 0);

  lcd.print("Prototipo criado por");
  lcd.setCursor(0, 1);
  lcd.print("Adriano Emiclys"); // Discord: AntonioMontana

  delay(1500);

  lcd.setCursor(0, 0);
  lcd.print("                     ");
  lcd.setCursor(0, 1);
  lcd.print("               ");

  delay(100);

  for (int thisLed = 0; thisLed < ledCount; thisLed++) {
    pinMode(ledPins1[thisLed], OUTPUT);
  }

  lcd.setCursor(0, 0);
  lcd.print("Fader 1: ");
  lcd.setCursor(0, 1);
  lcd.print("Fader 2: ");
  lcd.setCursor(0, 2);
  lcd.print("Fader 3: ");
  lcd.setCursor(0, 3);
  lcd.print("Fader 4: ");
  lcd.setCursor(15, 4);
  lcd.print("Pg: 1");

  pinMode(22, HIGH);
  pinMode(23, HIGH);
  pinMode(24, HIGH);
  pinMode(25, HIGH);
  pinMode(26, HIGH);
  pinMode(27, HIGH);
  pinMode(28, HIGH);
  pinMode(29, HIGH);
  pinMode(30, HIGH);
  pinMode(31, HIGH);

  pinMode(13, INPUT);
  pinMode(12, INPUT);
  pinMode(11, INPUT);
  pinMode(10, INPUT);
  pinMode(9, INPUT);
  pinMode(8, INPUT);
  pinMode(7, INPUT);
  pinMode(6, INPUT);

  lastEnc = digitalRead(7);
}

void loop() {

  fader0map = map(analogRead(A15), 0, 1023, -90, 10);
  fader1map = map(analogRead(A14), 0, 1023, -90, 10);
  fader2map = map(analogRead(A13), 0, 1023, -90, 10);
  fader3map = map(analogRead(A12), 0, 1023, -90, 10);

  if (encBtn == true) {

  } else {
    if (digitalRead(8) == HIGH) {
      encBtn = true;
      if (encIsAtPan == true) {
        encIsAtPan = false;
      } else {
        encIsAtPan = true;
      }
    }

  if (digitalRead(8) == LOW) {
    encBtn = false;
  }

  if (pageSw == true) {

  } else {
    if (digitalRead(13) == HIGH) {
      pageSw = true;
      lcd.setCursor(0, 0);
      lcd.print("                    ");
      lcd.setCursor(0, 1);
      lcd.print("                    ");
      lcd.setCursor(0, 2);
      lcd.print("                    ");
      lcd.setCursor(0, 3);
      lcd.print("               ");
      page1 = !page1;
      if (page1 == false) {
        if (selectedCH == 1) {
          lcd.setCursor(0, 0);
          lcd.print("CH" + String(selectedCH));
          lcd.setCursor(4, 0);
          lcd.print("BATERA");
          lcd.setCursor(0, 1);
          lcd.print("Gain: ");
          lcd.setCursor(0, 2);
          lcd.print("Pan: ");
          lcd.setCursor(15, 4);
          lcd.print("Pg: 2");
        }
        if (selectedCH == 2) {
          lcd.setCursor(0, 0);
          lcd.print("CH" + String(selectedCH));
          lcd.setCursor(15, 4);
          lcd.print("Pg: 2");
          lcd.setCursor(4, 0);
          lcd.print("BASS");
          lcd.setCursor(0, 2);
          lcd.print("Pan: ");
          lcd.setCursor(0, 1);
          lcd.print("Gain: ");
        }
        if (selectedCH == 3) {
          lcd.setCursor(0, 0);
          lcd.print("CH" + String(selectedCH));
          lcd.setCursor(15, 4);
          lcd.print("Pg: 2");
          lcd.setCursor(4, 0);
          lcd.print("GTR");
          lcd.setCursor(0, 2);
          lcd.print("Pan: ");
          lcd.setCursor(0, 1);
          lcd.print("Gain: ");
        }
        if (selectedCH == 4) {
          lcd.setCursor(0, 0);
          lcd.print("CH" + String(selectedCH));
          lcd.setCursor(15, 4);
          lcd.print("Pg: 2");
          lcd.setCursor(4, 0);
          lcd.print("VOZ");
          lcd.setCursor(0, 2);
          lcd.print("Pan: ");
          lcd.setCursor(0, 1);
          lcd.print("Gain: ");
        }
      }
      if (page1 == true) {
        lcd.begin(20, 4);
        lcd.setCursor(0, 0);
        lcd.print("Fader 1: ");
        lcd.setCursor(0, 1);
        lcd.print("Fader 2: ");
        lcd.setCursor(0, 2);
        lcd.print("Fader 3: ");
        lcd.setCursor(0, 3);
        lcd.print("Fader 4: ");
        lcd.setCursor(15, 4);
        lcd.print("Pg: 1");
      }
    }
  }

  if (digitalRead(13) == LOW) {
    pageSw = false;
  }








  // Selecionar canal 1:









  if (sel1 == true) {

  } else {
    if (digitalRead(12) == HIGH) {
      sel1 = true;
      selectedCH = 1;
      written = false;
    }
  }

  if (digitalRead(12) == LOW) {
    sel1 = false;
  }

  // Selecionar canal 2:

  if (sel2 == true) {

  } else {
    if (digitalRead(11) == HIGH) {
      sel2 = true;
      selectedCH = 2;
      written = false;
    }
  }

  if (digitalRead(11) == LOW) {
    sel2 = false;
  }

  // Selecionar canal 3:

  if (sel3 == true) {

  } else {
    if (digitalRead(10) == HIGH) {
      sel3 = true;
      selectedCH = 3;
      written = false;
    }
  }

  if (digitalRead(10) == LOW) {
    sel3 = false;
  }

  // Selecionar canal 4:

  if (sel4 == true) {

  } else {
    if (digitalRead(9) == HIGH) {
      sel4 = true;
      selectedCH = 4;
      written = false;
    }
  }

  if (digitalRead(9) == LOW) {
    sel4 = false;
  }



  if (page1 == true) {
    if (fader0map == -90) {
      lcd.setCursor(9, 0);
      lcd.print("-inf ");
    } else {
      lcd.setCursor(9, 0);
      lcd.print(fader0map + String("dB  "));
    }
    if (fader1map == -90) {
      lcd.setCursor(9, 1);
      lcd.print("-inf ");
    } else {
      lcd.setCursor(9, 1);
      lcd.print(fader1map + String("dB  "));
    }
    if (fader2map == -90) {
      lcd.setCursor(9, 2);
      lcd.print("-inf ");
    } else {
      lcd.setCursor(9, 2);
      lcd.print(fader2map + String("dB  "));
    }

    if ((fader3map <= -10) && (fader3map >= -89)) {
      lcd.setCursor(9, 3);
      lcd.print(fader3map + String("dB "));
    } else {
      if (fader3map > -9) {
        lcd.setCursor(9, 3);
        lcd.print(fader3map + String("dB  "));
      }
      if (fader3map == -90) {
      lcd.setCursor(9, 3);
      lcd.print("-inf  ");
    }
    }
  } else {










    // Página 2:











  int sensorReading = analogRead(analogPin);

  int ledLevel = map(sensorReading, 0, 1023, 0, ledCount);


  for (int thisLed = 0; thisLed < ledCount; thisLed++) {

    if (thisLed < ledLevel) {
      digitalWrite(ledPins1[thisLed], HIGH);
    }

    else {
      digitalWrite(ledPins1[thisLed], LOW);
    }
  }

    lcd.setCursor(2, 0);
    lcd.print(selectedCH);
    lcd.setCursor(4, 0);



    if (selectedCH == 1) {
      if (written == true) {
      } else {
        lcd.print("      ");
        lcd.setCursor(4, 0);
        lcd.print("BATERA");
        lcd.setCursor(0, 1);
        lcd.print("Gain: ");
        lcd.setCursor(0, 2);
        lcd.print("Pan:  " + String(CH1Pan));
        written = true;
      }

      if (CH1gain >= 0) {
        lcd.setCursor(6, 1);
        lcd.print("+" + String(CH1gain) + String("dB "));
      } else {
        lcd.setCursor(6, 1);
        lcd.print(CH1gain + String("dB "));
      }


      if (CH1Pan <= -101) {
        CH1Pan = -100;
      }

      if (CH1Pan >= 101) {
        CH1Pan = 100;
      }


      if (CH1gain <= -16) {
        CH1gain = -15;
      }

      if (CH1gain >= 61) {
        CH1gain = 60;
      }

      if (encIsAtPan == false) {

      actualEnc = digitalRead(7);
      if (actualEnc != lastEnc) {
        if (digitalRead(6) != actualEnc) {
          CH1gain++;
          lastEnc = digitalRead(7);
        } else {
          CH1gain--;
          lastEnc = digitalRead(7);
        }
      }
      } else {

        lcd.setCursor(6, 2);
        lcd.print(CH1Pan + String("  "));

      actualEnc = digitalRead(7);
      if (actualEnc != lastEnc) {
        if (digitalRead(6) != actualEnc) {
          lastEnc = digitalRead(7);
          CH1Pan++;
        } else {
          CH1Pan--;
          lastEnc = digitalRead(7);
        }
      }
      }
    }



    if (selectedCH == 2) {
      if (written == true) {

      } else {
        lcd.print("      ");
        lcd.setCursor(4, 0);
        lcd.print("BASS");
        lcd.setCursor(0, 1);
        lcd.print("Gain: ");
        written = true;
      }
      if (CH2gain >= 0) {
        lcd.setCursor(6, 1);
        lcd.print("+" + String(CH2gain) + String("dB "));
      } else {
        lcd.setCursor(6, 1);
        lcd.print(CH2gain + String("dB "));
      }
      if (CH2gain <= -16) {
        CH2gain = -15;
      }
      if (CH2gain >= 61) {
        CH2gain = 60;
      }

      actualEnc = digitalRead(7);
      if (actualEnc != lastEnc) {
        if (digitalRead(6) != actualEnc) {
          CH2gain++;
          lastEnc = digitalRead(7);
        } else {
          CH2gain--;
          lastEnc = digitalRead(7);
        }
      }
    }



    if (selectedCH == 3) {
      if (written == true) {

      } else {
        lcd.print("      ");
        lcd.setCursor(4, 0);
        lcd.print("GTR");
        lcd.setCursor(0, 1);
        lcd.print("Gain: ");
        written = true;
      }
      if (CH3gain >= 0) {
        lcd.setCursor(6, 1);
        lcd.print("+" + String(CH3gain) + String("dB "));
      } else {
        lcd.setCursor(6, 1);
        lcd.print(CH3gain + String("dB "));
      }
      if (CH3gain <= -16) {
        CH3gain = -15;
      }
      if (CH3gain >= 61) {
        CH3gain = 60;
      }

      actualEnc = digitalRead(7);
      if (actualEnc != lastEnc) {
        if (digitalRead(6) != actualEnc) {
          CH3gain++;
          lastEnc = digitalRead(7);
        } else {
          CH3gain--;
          lastEnc = digitalRead(7);
        }
      }
    }



    if (selectedCH == 4) {
      if (written == true) {
      } else {
        lcd.print("      ");
        lcd.setCursor(4, 0);
        lcd.print("VOZ");
        lcd.setCursor(0, 1);
        lcd.print("Gain: ");
        written = true;
      }

      if (CH4gain >= 0) {
        lcd.setCursor(6, 1);
        lcd.print("+" + String(CH4gain) + String("dB "));
      } else {
        lcd.setCursor(6, 1);
        lcd.print(CH4gain + String("dB "));
      }

      if (CH4gain <= -16) {
        CH4gain = -15;
      }

      if (CH4gain >= 61) {
        CH4gain = 60;
      }

      actualEnc = digitalRead(7);

      if (actualEnc != lastEnc) {
        if (digitalRead(6) != actualEnc) {
          CH4gain++;
          lastEnc = digitalRead(7);
        } else {
          CH4gain--;
          lastEnc = digitalRead(7);
        }
      }
    }
  }
}
}