#include  
#include 
#include 
#include  
#include 

LiquidCrystal_I2C lcd(0x27,16,2);
#define taille 6
#define SS_PIN 10
#define RST_PIN 9
#define Serrure 3 
#define Buzzer 8
char Data[taille];
char Code1[taille] = "1234D";
int indice = 0;
char customKey;
const byte ROWS = 4;
const byte COLS = 4; 
char keys[ROWS][COLS] = {
   {'1','2','3','A'},
  {'4','5','6','B'},
  {'7','8','9','C'},
  {'*','0','#','D'}
};

byte rowPins[ROWS] = {4,5,6,7}; 
byte colPins[COLS] = {A3,A2,A1,A0};
Keypad customKeypad( makeKeymap(keys), rowPins, colPins, ROWS, COLS);

MFRC522 mfrc522(SS_PIN, RST_PIN);//Create MFRC522 instance.

void setup()
{
 pinMode(Buzzer, OUTPUT); 
 pinMode(Serrure,OUTPUT);
 Serial.begin(9600);// Initiate a serial communication
 SPI.begin();    
 mfrc522.PCD_Init();  
 lcd.init();// initialize the lcd 
 lcd.init();
 lcd.backlight();
 lcd.setCursor(2,0);
 lcd.print("PORTE FERMEE");
 Serial.println("PORTE FERMEE");
 lcd.setCursor(0,1);
 lcd.print("TAPEZ VOTRE CODE ");
 Serial.println("TAPEZ VOTRE CODE ");

       digitalWrite(Serrure,HIGH);
}

void loop()
{
  ///////////////////////////////////////////////////////////////////////////////////////////////////
 customKey = customKeypad.getKey();
  if (customKey) // makes sure a key is actually pressed, equal to (customKey != NO_KEY)
  {
    digitalWrite(Buzzer,HIGH);
    delay(100);
    digitalWrite(Buzzer,LOW);
    Data[indice] = customKey;
   lcd.setCursor(5,0);
   lcd.print("CODE:");
   Serial.print("CODE:");
    indice++;
    if(indice==1)
    {
      lcd.clear();
         lcd.setCursor(5,0);
   lcd.print("CODE:");
   
      lcd.setCursor(0,1);
      lcd.print("*");//lcd.print(customKey);
    }
        if(indice==2)
    {
     lcd.setCursor(1,1);
      lcd.print("*");//lcd.print(customKey);
     Serial.print("*");
    }
            if(indice==3)
    {
     lcd.setCursor(2,1);
          lcd.print("*");    //lcd.print(customKey);
    }

    if(indice==4)
    {
     lcd.setCursor(3,1);
     lcd.print("*");  //lcd.print(customKey);

    }

        if(indice==5)
    {
     lcd.setCursor(4,1);
      lcd.print("*");//lcd.print(customKey);
   delay(500);
    }
    
   
 }

  if(indice == taille-1 )
  {
    indice=0;
    if(!strcmp(Data, Code1))
    {
           
      lcd.clear();
      lcd.setCursor(0,0);
      lcd.print("ACCES AUTORISER");
      lcd.setCursor(4,1);
      lcd.print("CODE BON");
      digitalWrite(Serrure,LOW);
      delay(1000);
      digitalWrite(Serrure,HIGH);
      delay(2000);
      affichage();
    }
    else
    {  
       clearData();
       lcd.clear();
       lcd.setCursor(2,0);
       lcd.print("ACCES REFUSER");
       lcd.setCursor(2,1);
       lcd.print("MAUVAIS CODE ");
       digitalWrite(Buzzer,HIGH);
       delay(1000);
       digitalWrite(Buzzer,LOW);
       delay(1000);
       affichage(); 
    }   
     
  }
  delay(100);

///////////////////////////////////////////////////////////////////////////////////////////////////

// ///////////////////////////////////////////////////////////////////////////////////////////////////
//    // Look for new cards
  if ( ! mfrc522.PICC_IsNewCardPresent()) 
  {
    return;
  }
  // Select one of the cards
  if ( ! mfrc522.PICC_ReadCardSerial()) 
  {
    return;
  }
  //Show UID on serial monitor
  Serial.print("UID tag :");
  String content= "";
  byte letter;
  for (byte i = 0; i < mfrc522.uid.size; i++) 
  {
     Serial.print(mfrc522.uid.uidByte[i] < 0x10 ? " 0" : " ");
     Serial.print(mfrc522.uid.uidByte[i], HEX);
     content.concat(String(mfrc522.uid.uidByte[i] < 0x10 ? " 0" : " "));
     content.concat(String(mfrc522.uid.uidByte[i], HEX));
  }
  Serial.println();
  Serial.print("Message : ");
  content.toUpperCase();
if(content.substring(1) == "FC 04 AF 1A")//change here the UID of the card/cards that you want to give access
  {
      lcd.clear();
      lcd.setCursor(0,0);
      lcd.print("ACCES AUTORISER");
      lcd.setCursor(3,1);
      lcd.print("BONNE CARTE");
      digitalWrite(Serrure,LOW);
      delay(1000);
      digitalWrite(Serrure,HIGH);
      delay(2000);
      affichage();
  } else   
  {
       clearData();
       lcd.clear();
       lcd.setCursor(2,0);
       lcd.print("ACCES REFUSER");
       lcd.setCursor(2,1);
       lcd.print("MAUVAISE CARTE");
       digitalWrite(Buzzer,HIGH);
       delay(1000);
       digitalWrite(Buzzer,LOW);
       delay(1000);
       affichage();
  }
       digitalWrite(Serrure,HIGH);

 }
 ///////////////////////////////////////////////////////////////////////////////////////////////////

    
/*********************************************************************************************************************************************/
/************************************************************* Sous Programme ****************************************************************/
/*********************************************************************************************************************************************/
void clearData()
{
  while(indice !=0)
  {
    Data[indice--] = 0;
  }
  return; 
}
void affichage()
{
   lcd.clear();
   lcd.setCursor(3,0);
   lcd.print("PORTE FERMEE");
   lcd.setCursor(0,1);
   lcd.print("TAPEZ VOTRE CODE ");
   return;
}