#include <LiquidCrystal.h>

const int buzzerPin = 12; // Define the pin connected to the buzzer

int farma = 0;
int farmb = 0;

// Define buzzer states
const int BUZZER_ON = HIGH;
const int BUZZER_OFF = LOW;

// State and timing variables
int buzzerState = BUZZER_OFF;
unsigned long lastMotionTime = 0;
const unsigned long buzzerDuration = 5000; // Buzzer duration in milliseconds (10 seconds)

LiquidCrystal lcd(9, 8, 7, 6, 5, 4); // Your LCD connections

void setup()
{
  Serial.begin(9600); // Initialize serial communication
  lcd.begin(16, 2);   // Initialize the LCD
  pinMode(buzzerPin, OUTPUT); // Set buzzer pin as output
}

void loop()
{
  // Simulating PIR sensor readings
  farma = digitalRead(2); // Pin 2 for PIR sensor A
  farmb = digitalRead(3); // Pin 3 for PIR sensor B

  // Display Fence A
  lcd.setCursor(0, 0);
  lcd.print("Farm A: ");
  printWithDelay(farma, 0);

  // Display Fence B
  lcd.setCursor(0, 1);
  lcd.print("Farm B: ");
  printWithDelay(farmb, 1);

  // Check for motion
  if (farma == HIGH || farmb == HIGH)
  {
    buzzerState = BUZZER_ON; // Turn on the buzzer if motion detected
    lastMotionTime = millis(); // Update last motion time
  }

  // Control buzzer based on timer
  if (buzzerState == BUZZER_ON)
  {
    tone(buzzerPin, 1000); // Play sound at 1000 Hz

    // Check if the buzzer should be turned off
    if (millis() - lastMotionTime >= buzzerDuration)
    {
      buzzerState = BUZZER_OFF; // Turn off the buzzer after the duration
    }
  }
  else
  {
    noTone(buzzerPin); // Stop playing sound
  }

  // Read Bluetooth data
  if (Serial.available() > 0)
  {
    char data = Serial.read(); // Read single character from Bluetooth
    if (data == '1')
    {
      buzzerState = BUZZER_ON;
    }
    else if (data == '0')
    {
      buzzerState = BUZZER_OFF;
    }
  }

  delay(100); // Delay for stability
}

void printWithDelay(int motionDetected, int row)
{
  // Move cursor to the start of the message area
  lcd.setCursor(7, row); // Position cursor after "Farm A: " or "Farm B: "

  // Clear the line by printing spaces
  lcd.print("                "); // 16 spaces to clear the line
  lcd.setCursor(7, row); // Reset cursor to start of message area

  if (motionDetected == HIGH)
  {
    slowPrint("Birds ", row);
  }
  else
  {
    slowPrint("No Motion", row);
  }
}

void slowPrint(const char *str, int row)
{
  lcd.setCursor(7, row); // Ensure cursor is at the correct row
  while (*str)
  {
    lcd.write(*str++);
    delay(100); // Adjust the delay as needed for desired speed
  }
}