int button1Pin = 7;  // Connect button 1 to digital pin 7
int button4Pin = 9; 
int button2Pin = 5;  // Connect button 2 to digital pin 5
int button3Pin = 6;  // Connect button 3 to digital pin 6
int relay1Pin = 4;   // Connect relay 1 to digital pin 4
int relay2Pin = 3;   // Connect relay 2 to digital pin 3
int relay3Pin = 2;
int relay4Pin = 8;   // Connect relay 3 to digital pin 2
int counter = 0;
bool relay1_active = false;
bool relay2_3_active = false;
unsigned long startTime;
bool safe = false;
const unsigned long RELAY1_2_DURATION = 2 * 60 * 1000;  // 2 minutes in milliseconds
const unsigned long TOTAL_DURATION = 4 * 60 * 1000;  // 4 minutes in milliseconds

void setup() {
  // Initialize digital pins
  pinMode(button1Pin, INPUT);
  pinMode(button4Pin, INPUT);
  pinMode(button2Pin, INPUT);
  pinMode(button3Pin, INPUT);
  pinMode(relay1Pin, OUTPUT);
  pinMode(relay2Pin, OUTPUT);
  pinMode(relay3Pin, OUTPUT);
  pinMode(relay4Pin, OUTPUT);
 pinMode(A2, INPUT);
  pinMode(A3, INPUT);
  // Start serial communication
  Serial.begin(9600);
}

void loop() {
  int moisture1 = analogRead(A2);
  int moisture2 = analogRead(A3);
  if (moisture1 > 50 && moisture2 > 50  ) {
    digitalWrite(relay4Pin, LOW);
  }
  if (moisture2 < 50 && moisture1 < 50) {
    digitalWrite(relay4Pin, HIGH);
  }
  while(digitalRead(button4Pin) == HIGH)
  {
    digitalWrite(relay4Pin, HIGH);
  }
  //Serial.println (digitalRead(button1Pin));
  // Check button 1
  if (digitalRead(button1Pin) == HIGH)//  ||   الوقت المحدد حان
  {
    // Button 1 is pressed, turn on relay 1 and relay 2 for 2 minutes
    digitalWrite(relay1Pin, HIGH);
    digitalWrite(relay2Pin, HIGH);
    digitalWrite(relay3Pin, LOW);
    relay1_active = true;
    safe = true;
    startTime = millis();
  }

  // Check if relay 1 and 2 duration has passed
  if (relay1_active && millis() - startTime >= RELAY1_2_DURATION) {
    digitalWrite(relay1Pin, LOW);
    relay1_active = false;
  }

  // Check button 2
  if (digitalRead(button2Pin) == HIGH && safe == true) {
    // Button 2 is pressed, turn on relay 3 and turn off relay 2
    digitalWrite(relay2Pin, LOW);
    digitalWrite(relay3Pin, HIGH);
    relay2_3_active = true;
    
  }

  // Check button 3
  if (digitalRead(button3Pin) == HIGH && safe == true) {
    // Button 3 is pressed, turn on relay 2 and turn off relay 3
    digitalWrite(relay2Pin, HIGH);
    digitalWrite(relay3Pin, LOW);
    relay2_3_active = true;
   
  }

  // Check if relay 2&3 duration has passed
  if ( relay2_3_active && millis() - startTime >= TOTAL_DURATION) {
    digitalWrite(relay2Pin, LOW);
    digitalWrite(relay3Pin, LOW);
    relay2_3_active = false;
    safe == false ; 
  }
  
}