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

LiquidCrystal_I2C ecran_lcd(0x27, 16, 2);
const byte clavier_lignes = 4;
const byte clavier_colonnes = 4;
Servo monservo;
int angle=0;
byte lignes_pins[clavier_lignes] = {9, 8, 7 , 6};
byte colonnes_pins[clavier_colonnes] = {5, 4, 3, 2};

char caractere_recu;

char code_secret[4] = {'3', '1', '0', '1'};
char code_recu[4] = {' ', ' ', ' ', ' '};
int indice_code = 0;
int etat_code = 1;
int i = 0;

char clavier_caractere[clavier_lignes][clavier_colonnes] = {
  {'1','2','3'},
  {'4','5','6'},
  {'7','8','9'},
  {'*','0','#'}
};

Keypad clavier = Keypad(makeKeymap(clavier_caractere), lignes_pins, colonnes_pins, clavier_lignes, clavier_colonnes);
    
void setup()
{
  monservo.attach(11);
  ecran_lcd.init();
  ecran_lcd.backlight();
  ecran_lcd.print("Entrez code");
}

void loop(){

 ecran_lcd.setCursor(indice_code, 1);
  caractere_recu = clavier.getKey();
  if(caractere_recu == '#')
  {
ecran_lcd.clear();
indice_code = 0;
ecran_lcd.print("Fermeture");
}
  
  else 
  {
    etat_code = 1;
    
    if(caractere_recu && indice_code < 4)
    {
      ecran_lcd.print(caractere_recu);
      code_recu[indice_code] = caractere_recu;
      indice_code = indice_code + 1;
    }
    else if(indice_code == 4) 
    {
      delay(500);
      i = 0;
      while(etat_code == 1 && i<4)
      {
        if(code_recu[i] != code_secret[i])
        {
          etat_code =0;
        }
        else
        {
          i = i + 1;
        }
      }
      if(etat_code == 0)
      {
        ecran_lcd.clear();
        ecran_lcd.print("Code incorrect !");
        delay(1000);
        indice_code = 0;
        ecran_lcd.clear();
        ecran_lcd.print("Entrez Code");
      }
      else
      {
        ecran_lcd.clear();
        ecran_lcd.print("Code correct !");
        ecran_lcd.setCursor(indice_code , 1);
        ecran_lcd.print("Ouverture !");
        monservo.write(180);
      }
    }
  }
  if(caractere_recu == '#')
  {
ecran_lcd.clear();
indice_code = 0;
ecran_lcd.print("Fermeture");
monservo.write(90);
delay(1500);
ecran_lcd.clear();
ecran_lcd.print("Entrez code");
}
 if(caractere_recu == '*')
  {
ecran_lcd.print("    ");
indice_code = 0;

}
if(caractere_recu == '*')
  {
 ecran_lcd.setCursor(0, 1);
 ecran_lcd.print("                ");
}
}