#include <LiquidCrystal_I2C.h>
#include <EEPROM.h>
LiquidCrystal_I2C lcd(0x27,16,2);

int czas = 0;
int clkTime = 0;
int mil = 0;
int sec = 0;
int min  = 0;
int light = 0;
int settings = 0;
int rek_mil = 0;
int rek_sec = 0;
int rek_min = 0;
int reset = 1;
int podejscia = 0;
String symbole_1 [18] = {"L ","R ","F ","B ","U ","D ","L' ","R' ","F' ","B' ","U' ","D' ","L2 ","R2 ","F2 ","B2 ","U2 ","D2 "};

void setup() {
  // put your setup code here, to run once:
  digitalWrite(A1, HIGH);
  lcd.begin(16, 2);
  lcd.init();
  lcd.clear();
  pinMode(A3, INPUT_PULLUP);
  pinMode(A2, INPUT_PULLUP);
  pinMode(A1, OUTPUT);
  EEPROM.get(0, light);
  EEPROM.get(2, rek_min);
  EEPROM.get(4, rek_sec);
  EEPROM.get(6, rek_mil);
  EEPROM.get(8, reset);
  EEPROM.get(10, podejscia);
  if(rek_min == -1) {rek_min=0;}
  if(rek_sec == -1) {rek_sec=0;}
  if(rek_mil == -1) {rek_mil=0;}
  if(reset == -1) {reset=0;}
  if(podejscia == -1) {podejscia=0;}
  if(light == 0) {lcd.noBacklight();}
  if(light == 1) {lcd.backlight();}
}

void loop() {

  if(clkTime == 1) {
    liczenie();
  }

  if(digitalRead(A3) == HIGH && digitalRead(A2) == HIGH && clkTime == 0 && settings == 0) {
    lcd.setCursor(0, 0);
    lcd.print("Rekord:  ");
    lcd.print(rek_min);
    lcd.print(":");
    lcd.print(rek_sec);
    lcd.print(".");
    if(rek_mil<10) {
      lcd.print("0");
      lcd.print(rek_mil);
    }
    if(rek_mil>=10) {
      lcd.print(rek_mil);
    }
    lcd.setCursor(0, 3);
    lcd.print("Rozpocznij");
    if(digitalRead(A2) == LOW) {
      delay(300);
      settings = 1;
      lcd.clear();
    }
  }

  if(settings >= 1) {
    ustawienia();
  }

  if(digitalRead(A3) == LOW && clkTime == 0 && settings == 0) {
    lcd.clear();
    delay(200);
    clkTime++;
    lcd.setCursor(1, 0);
    lcd.print("Mierzenie czasu");
  }

  if(digitalRead(A2) == LOW && clkTime == 2) {
    lcd.clear();
    lcd.setCursor(0, 0);
    lcd.print("KASOWANIE WYNIKU");
    delay(300);
    digitalWrite(A1, LOW);
  }

  if(digitalRead(A3) == LOW && clkTime == 2) {
    lcd.clear();
    lcd.setCursor(1, 0);
    lcd.print("ZAPISYWANIE...");
    delay(300);
    if(rek_min > min) {
      EEPROM.put(2, min);
      EEPROM.put(4, sec);
      EEPROM.put(6, mil);
    }
    if(rek_min >= min && rek_sec > sec) {
      EEPROM.put(2, min);
      EEPROM.put(4, sec);
      EEPROM.put(6, mil);
    }
    if(rek_min >= min && rek_sec == sec && rek_mil >= mil) {
      EEPROM.put(2, min);
      EEPROM.put(4, sec);
      EEPROM.put(6, mil);
    }
    if(reset == 1) {
      reset = 0;
      EEPROM.put(2, min);
      EEPROM.put(4, sec);
      EEPROM.put(6, mil);
      EEPROM.put(8, reset);
    }
    podejscia++;
    EEPROM.put(10, podejscia);
    digitalWrite(A1, LOW);
  }
}

void liczenie() {

  if(digitalRead(A3) == HIGH && clkTime == 1) {
    time();
  }
  if(digitalRead(A3) == LOW && clkTime == 1) {
    clkTime++;
    delay(300);
    sec = czas/100;
    mil = czas-(sec*100);
    while(sec>60) {
      sec = sec - 60;
      min++;
    }
    lcd.clear();
    lcd.setCursor(0, 0);
    lcd.print("Czas: ");
    lcd.print(min);
    lcd.print(":");
    lcd.print(sec);
    lcd.print(".");
    if(mil<10) {
      lcd.print("0");
      lcd.print(mil);
    }
    if(mil>=10) {
      lcd.print(mil);
    }
    lcd.setCursor(0, 1);
    lcd.print("<- Odrzuc");
  }
}

void time() {
  delay(10);
  czas++;
}

void ustawienia() {
  lcd.setCursor(4, 0);
  lcd.print("Ustawienia");
  if(settings == 1) {
    lcd.setCursor(0, 1);
    lcd.print("Podswietlenie");
    lcd.setCursor(15, 1);
    lcd.print(light);
    if(digitalRead(A3) == LOW && light == 0) {
      delay(200);
      light = 1;
      lcd.backlight();
      EEPROM.put(0, light);
    }
    if(digitalRead(A3) == LOW && light == 1) {
      delay(200);
      light = 0;
      lcd.noBacklight();
      EEPROM.put(0, light);
    }
  }
  if(settings == 3) {
    lcd.setCursor(0, 1);
    lcd.print("Resetowanie  TAK");
    if(digitalRead(A3) == LOW && digitalRead(A2) == LOW) {
      lcd.clear();
      lcd.print("RESET");
      delay(2000);
      EEPROM.put(0, 0);
      EEPROM.put(2, 0);
      EEPROM.put(4, 0);
      EEPROM.put(6, 0);
      EEPROM.put(8, 1);
      EEPROM.put(10, 0);
      digitalWrite(A1, LOW);
    }
    if(digitalRead(A3) == LOW && digitalRead(A2) == HIGH) {
      lcd.clear();
      lcd.setCursor(0, 0);
      lcd.print("Musisz kliknac");
      lcd.setCursor(0, 1);
      lcd.print("dwa przyciski");
      delay(2000);
      lcd.clear();
      lcd.setCursor(4, 0);
      lcd.print("Ustawienia");
    }
  }
  if(settings == 2) {
    lcd.setCursor(0, 1);
    lcd.print("Podejscia: ");
    lcd.print(podejscia);
    lcd.print("    ");
  }
  if(digitalRead(A2) == LOW) {
    delay(300);
    settings++;
  }
  if(settings == 4) {
    lcd.clear();
    settings = 0;
  }
}