#include <Wire.h>
#include <LiquidCrystal_I2C.h>

#define PIR_SENSOR_PIN 2
#define LED_PIN 5        // Alert LED
#define BUZZER_PIN 4     // Buzzer
#define CAMERA_LED_PIN 14  // Simulated Camera LED

// Set the LCD address to 0x27 for a 16 chars and 2-line display
LiquidCrystal_I2C lcd(0x27, 16, 2);

void setup() {
  pinMode(PIR_SENSOR_PIN, INPUT);
  pinMode(LED_PIN, OUTPUT);
  pinMode(BUZZER_PIN, OUTPUT);
  pinMode(CAMERA_LED_PIN, OUTPUT);
  
  // Initialize the LCD
  lcd.init();           // Corrected this from lcd.begin() to lcd.init()
  lcd.backlight();       // Turn on the backlight
  
  Serial.begin(115200);

  // Display initial message
  lcd.setCursor(0, 0);
  lcd.print("System Armed");
  lcd.setCursor(0, 1);
  lcd.print("Awaiting Motion");
}

void loop() {
  int motionDetected = digitalRead(PIR_SENSOR_PIN);
  
  if (motionDetected == HIGH) {
    digitalWrite(LED_PIN, HIGH);     // Alert LED ON
    digitalWrite(BUZZER_PIN, HIGH);  // Buzzer ON
    Serial.println("Motion Detected! Alert Sent.");
    
    // Update LCD message
    lcd.clear();
    lcd.setCursor(0, 0);
    lcd.print("Motion Detected");
    lcd.setCursor(0, 1);
    lcd.print("Sending Alert...");
    
    // Simulate camera action with LED
    digitalWrite(CAMERA_LED_PIN, HIGH);  
    Serial.println("Simulated Picture Taken.");
    delay(2000);  // Keep camera LED on for 2 seconds
    digitalWrite(CAMERA_LED_PIN, LOW);  // Turn off simulated camera LED

    // After capturing, show a different message
    lcd.clear();
    lcd.setCursor(0, 0);
    lcd.print("Pic Captured!");
    lcd.setCursor(0, 1);
    lcd.print("Owner Notified.");
    
  } else {
    digitalWrite(LED_PIN, LOW);      // Alert LED OFF
    digitalWrite(BUZZER_PIN, LOW);   // Buzzer OFF

    // Return to default message when no motion is detected
    lcd.clear();
    lcd.setCursor(0, 0);
    lcd.print("System Armed");
    lcd.setCursor(0, 1);
    lcd.print("Awaiting Motion");
  }
  delay(1000);
}