#include <LiquidCrystal.h>
#include <RTClib.h>

LiquidCrystal lcd(12, 11, 10, 9, 8, 7);
RTC_DS1307 rtc;

String from;
String to;
int keep = 250;

void arrow_transition(){
  lcd.setCursor(7,0);
  lcd.print("-");
  lcd.setCursor(7,1);
  lcd.print("-");
  delay(keep);
  for(int i=1;i<8;i++){
    lcd.setCursor(7-i,0);
    lcd.print("<");
    lcd.setCursor(7-i+1,0);
    lcd.print("-");
    lcd.setCursor(7+i,0);
    lcd.print(">");
    lcd.setCursor(7+i-1,0);
    lcd.print("-");
    lcd.setCursor(7-i,1);
    lcd.print("<");
    lcd.setCursor(7-i+1,1);
    lcd.print("-");
    lcd.setCursor(7+i,1);
    lcd.print(">");
    lcd.setCursor(7+i-1,1);
    lcd.print("-");
    delay(keep);
  }
  lcd.clear();
}

void selection_from(int num){
switch (num){
      case 0:
      from = "EL AFROUN";
      lcd.print("EL AFROUN");
      break;
      case 1:
      from = "MOUZAIA";
      lcd.print("MOUZAIA");
      break;
      case 2:
      from = "CHIFFA";
      lcd.print("CHIFFA");
      break;
      case 3:
      from = "BLIDA";
      lcd.print("BLIDA");
      break;
      case 4:
      from = "BENI MERED";
      lcd.print("BENI MERED");
      break;
      case 5:
      from = "BOUFARIK";
      lcd.print("BOUFARIK");
      break;
      case 6:
      from = "BIRTOUTA";
      lcd.print("BIRTOUTA");
      break;
      case 7:
      from = "BABA ALI";
      lcd.print("BABA ALI");
      break;
      case 8:
      from = "AIN NAADJA";
      lcd.print("AIN NAADJA");
      break;
      case 9:
      from = "GUE DE CONSTANTINE";
      lcd.print("GUE DE CONSTANTINE");
      break;
      case 10:
      from = "EL HARRACH";
      lcd.print("EL HARRACH");
      break;
      case 11:
      from = "CAROUBIER";
      lcd.print("CAROUBIER");
      break;
      case 12:
      from = "HUSSEIN DEY";
      lcd.print("HUSSEIN DEY");
      break;
      case 13:
      from = "ATELIERS";
      lcd.print("ATELIERS");
      break;
      case 14:
      from = "ALGER";
      lcd.print("ALGER");
      break;
      case 15:
      from = "OUED SMAR";
      lcd.print("OUED SMAR");
      break;
      case 16:
      from = "BAB EZZOUAR";
      lcd.print("BAB EZZOUAR");
      break;
      case 17:
      from = "DAR EL BEIDA";
      lcd.print("DAR EL BEIDA");
      break;
      case 18:
      from = "ROUIBA";
      lcd.print("ROUIBA");
      break;
      case 19:
      from = "REGHAIA";
      lcd.print("REGHAIA");
      break;
      case 20:
      from = "CORSO";
      lcd.print("CORSO");
      break;
      case 21:
      from = "BOUMERDAS";
      lcd.print("BOUMERDAS");
      break;
      case 22:
      from = "THENIA";
      lcd.print("THENIA");
      break;
    }
}

void selection_to(int num){
switch (num){
      case 0:
      to = "EL AFROUN";
      lcd.print("EL AFROUN");
      break;
      case 1:
      to = "MOUZAIA";
      lcd.print("MOUZAIA");
      break;
      case 2:
      to = "CHIFFA";
      lcd.print("CHIFFA");
      break;
      case 3:
      to = "BLIDA";
      lcd.print("BLIDA");
      break;
      case 4:
      to = "BENI MERED";
      lcd.print("BENI MERED");
      break;
      case 5:
      to = "BOUFARIK";
      lcd.print("BOUFARIK");
      break;
      case 6:
      to = "BIRTOUTA";
      lcd.print("BIRTOUTA");
      break;
      case 7:
      to = "BABA ALI";
      lcd.print("BABA ALI");
      break;
      case 8:
      to = "AIN NAADJA";
      lcd.print("AIN NAADJA");
      break;
      case 9:
      to = "GUE DE CONSTANTINE";
      lcd.print("GUE DE CONSTANTINE");
      break;
      case 10:
      to = "EL HARRACH";
      lcd.print("EL HARRACH");
      break;
      case 11:
      to = "CAROUBIER";
      lcd.print("CAROUBIER");
      break;
      case 12:
      to = "HUSSEIN DEY";
      lcd.print("HUSSEIN DEY");
      break;
      case 13:
      to = "ATELIERS";
      lcd.print("ATELIERS");
      break;
      case 14:
      to = "ALGER";
      lcd.print("ALGER");
      break;
      case 15:
      to = "OUED SMAR";
      lcd.print("OUED SMAR");
      break;
      case 16:
      to = "BAB EZZOUAR";
      lcd.print("BAB EZZOUAR");
      break;
      case 17:
      to = "DAR EL BEIDA";
      lcd.print("DAR EL BEIDA");
      break;
      case 18:
      to = "ROUIBA";
      lcd.print("ROUIBA");
      break;
      case 19:
      to = "REGHAIA";
      lcd.print("REGHAIA");
      break;
      case 20:
      to = "CORSO";
      lcd.print("CORSO");
      break;
      case 21:
      to = "BOUMERDAS";
      lcd.print("BOUMERDAS");
      break;
      case 22:
      to = "THENIA";
      lcd.print("THENIA");
      break;
    }
}

void setup() {
  lcd.begin(16, 2);
  if (! rtc.begin()) {
    Serial.println("Couldn't find RTC");
    Serial.flush();
    abort();
  }
  pinMode(A1, INPUT);
  pinMode(5, INPUT_PULLUP);
}

void loop() {
  lcd.setCursor(5,0);
  lcd.print("FROM :");
  delay(1000);
  arrow_transition();
  while(digitalRead(5) == HIGH){
    selection_from(analogRead(A1) / 45);
    delay(200);
    lcd.clear();
  }
  lcd.clear();
  lcd.setCursor(5,0);
  lcd.print("TO :");
  delay(1000);
  arrow_transition();
  while(digitalRead(5) == HIGH){
    selection_to(analogRead(A1) / 45);
    delay(200);
    lcd.clear();
  }
  arrow_transition();
  DateTime now = rtc.now();
  int time = now.hour()*60 + now.minute() - 120;
  lcd.print(from);
  lcd.print("-");
  lcd.print(to);
  lcd.setCursor(0,1);
  lcd.print("Time :");
  lcd.print(time / 60);
  lcd.print(":");
  lcd.print(time - ((time / 60) * 60));
  delay(80000);
}