#include <Servo.h>
#include <SoftwareSerial.h>
SoftwareSerial SIM900(12, 13);
String incomingData;
String message = "";
Servo myservo;
#include <Keypad.h>
#define sensor 10  //الحساس
int val;
int oldvalue = 1;
const int Password_Length = 4;
String Data;
String Master = "1234";
int lockOutput = 11;
byte data_count = 0;
char customKey;
const byte ROWS = 4;
const byte COLS = 4;

char hexaKeys[ROWS][COLS] = {
  { '1', '2', '3', 'A' },
  { '4', '5', '6', 'B' },
  { '7', '8', '9', 'C' },
  { '*', '0', '#', 'D' }
};

byte rowPins[ROWS] = { 9, 8, 7, 6 };
byte colPins[COLS] = { 5, 4, 3, 2 };
Keypad customKeypad = Keypad(makeKeymap(hexaKeys), rowPins, colPins, ROWS, COLS);

void setup() {
  myservo.attach(11);  //السيرفو
  pinMode(sensor, INPUT);
  myservo.write(0);
  SIM900.begin(9600);
  Serial.begin(9600);
}

void loop() {

  val = digitalRead(sensor);
  if (val == 0 && oldvalue == 1) {
    message = "Test";  //الرساله
    send_message(message);
    delay(200);
    oldvalue = 0;
  } else if (val == 1 && oldvalue == 0) {
    oldvalue = 1;
  }
  customKey = customKeypad.getKey();
  if (customKey) {
    Data += customKey;
    data_count++;
  }


  if (data_count == Password_Length) {

    if (Data == Master) {
      myservo.write(180);
      delay(5000);
      myservo.write(0);
    } else {
      delay(500);
    }

    clearData();
  }
}

void receive_message() {
  if (SIM900.available() > 0) {
    incomingData = SIM900.readString();
    Serial.print(incomingData);
    delay(10);
  }
}

void send_message(String message) {
 Serial.println ("Sending Message");
  SIM900.println("AT+CMGF=1");    //Sets the GSM Module in Text Mode
  delay(1000);
  Serial.println ("Set SMS Number");
  SIM900.println("AT+CMGS=\"+966567070153\"\r"); //Mobile phone number to send message
  delay(1000);
  Serial.println ("Set SMS Content");
  SIM900.println(message);// Messsage content
  delay(100);
  Serial.println ("Finish");
  SIM900.println((char)26);// ASCII code of CTRL+Z
  delay(1000);
}
void clearData() {
  data_count = 0;
  Data = "";
}