#include <Wire.h>
#include "Keypad.h"
#include "RTClib.h"
#include "LiquidCrystal_I2C.h"
#include "Servo.h"

const byte ROWS = 4;
const byte COLS = 3; 

#define I2C_ADDR  0x27
#define LCD_COLUMNS 16
#define LCD_LINES 2

LiquidCrystal_I2C lcd(I2C_ADDR, LCD_COLUMNS, LCD_LINES);

Servo servojoel;
RTC_DS1307 RTC; 

char daysOfTheWeek[7][12] = {"Domingo", "Lunes", "Martes", "Miércoles", "Jueves", "Viernes", "Sábado"};

 
char keys [ROWS] [COLS] = {
  {'1', '2', '3'},
  {'4', '5', '6'},
  {'7', '8', '9'},
  {'*', '0', '#'}
};
 
byte rowPins[ROWS] = {9, 8 ,7, 6}; 
byte colPins[COLS] = {5, 4, 3}; 
 
char i[4] = {0, 0, 0, 0};
char key=0; 
int j=0;
int cont = 0;
int green = 13;
int red = 12;
int white = 11;
int buzzer = A0;
int pos = 0;

Keypad keypad = Keypad( makeKeymap(keys), rowPins, colPins, ROWS, COLS);

void setup () {
lcd.backlight();
Serial.begin(9600);
Wire.begin();
RTC.begin();
RTC.adjust(DateTime(__DATE__, __TIME__));
servojoel.attach(10);
servojoel.write(pos);
lcd.begin(16,2);
digitalWrite (red, HIGH);
}


void loop () {

  DateTime now = RTC.now();

  while (cont < 4) { //
 
    key = keypad.getKey();
    i[j]= key;
    if (key){
      lcd.print("$");
      digitalWrite (white, HIGH);
      delay(500);
      digitalWrite (white, LOW);
      j=j+1;
      cont = cont+1;
    }
  }
  
 if (i[0] == '1' && i[1] == '2' && i[2] == '3' && i[3] == '4')
  {
  digitalWrite (red, LOW);
  digitalWrite (green, HIGH);
  lcd.setCursor(0,0);
  lcd.print("Allen Cigala");
  delay(3000);
  lcd.setCursor(0,1);
  lcd.print("ID:01");
  delay(1000);
  lcd.setCursor(0,0);
  lcd.print("Pin correcto");
  lcd.setCursor(0,1);
  lcd.print("Acceso ok");
  delay(1500);
  lcd.clear();
  lcd.setCursor(0,0);
  lcd.print("Bienvenido");
  lcd.setCursor(0,1);
  lcd.print("Sistema ok");
  delay(1500);
  lcd.clear();
  servojoel.write(90);
  delay(1000);
  servojoel.write(0);
  delay(1000);
  servojoel.attach(10);
  i[0]=0;
  i[1]=0;
  i[2]=0;
  i[3]=0;
  delay(1000);
  digitalWrite (green, LOW);
  delay(1500);
  lcd.clear();
  DateTime now = RTC.now();
  
  lcd.setCursor(0,0);
  
  lcd.print("DATE: ");
  lcd.print(now.day(), DEC);
  lcd.print("/");
    lcd.print(now.month(), DEC);
  lcd.print("/");
    lcd.print(now.year(), DEC);
  lcd.print("/");

  lcd.setCursor(0,1);
  lcd.print(now.hour(), DEC);
  lcd.print(":");
  lcd.print(now.minute(), DEC);
  lcd.print(":");
  lcd.print(now.second(), DEC);
  
  delay(2000);
  lcd.clear();
  digitalWrite (red, HIGH);
  }

   if (i[0] == '4' && i[1] == '3' && i[2] == '2' && i[3] == '1')
  {
  digitalWrite (red, LOW);
  digitalWrite (green, HIGH);
  lcd.setCursor(0,0);
  lcd.print("Joel Gonzalo");
  delay(3000);
  lcd.setCursor(0,1);
  lcd.print("ID:02");
  delay(1000);
  lcd.setCursor(0,0);
  lcd.print("CLAU ACCEPTADA");
  delay(500);
  lcd.clear ();
  delay(500);
  lcd.setCursor(0,0);
  lcd.print("CLAU ACCEPTADA");
  delay(500);
  lcd.clear ();
  delay(500);
  lcd.setCursor(0,0);
  lcd.print("CLAU ACCEPTADA");
  delay(500);
  lcd.clear ();
  delay(500);
  lcd.setCursor(0,0);
  lcd.print("CLAU ACCEPTADA");
  delay(500);
  lcd.clear ();
  delay(500);
  lcd.setCursor(0,0);
  lcd.print("CLAU ACCEPTADA");
  delay(500);
  lcd.clear ();
  delay(500);
  servojoel.write(90);
  delay(1000);
  servojoel.write(0);
  delay(1000);
  servojoel.attach(10);
  i[0]=0;
  i[1]=0;
  i[2]=0;
  i[3]=0;
  delay(1000);
  digitalWrite (green, LOW);
  lcd.clear();
  DateTime now = RTC.now();
  
  lcd.setCursor(0,0);
  
  lcd.print("DATE: ");
  lcd.print(now.day(), DEC);
  lcd.print("/");
    lcd.print(now.month(), DEC);
  lcd.print("/");
    lcd.print(now.year(), DEC);
  lcd.print("/");

  lcd.setCursor(0,1);
  lcd.print(now.hour(), DEC);
  lcd.print(":");
  lcd.print(now.minute(), DEC);
  lcd.print(":");
  lcd.print(now.second(), DEC);
  
  delay(2000);
  lcd.clear();
  digitalWrite (red, HIGH);
  }
  

else{

  
  tone(11, 262, 3000);
  lcd.setCursor(0,0);
  lcd.print("Acceso declinado");
  lcd.setCursor(0,1);
  lcd.print("Pin incorrecto");
  delay(2000);
  lcd.clear();
  

  }

  
cont =0;
j=0;
key=0;
}