#include <Adafruit_NeoPixel.h>
#include <LiquidCrystal_I2C.h>
#include <Arduino.h>

#define PIN 6  // Choose a digital pin on the Arduino Uno
#define NUM_PIXELS 8

Adafruit_NeoPixel np = Adafruit_NeoPixel(NUM_PIXELS, PIN, NEO_GRB + NEO_KHZ800);
LiquidCrystal_I2C lcd(0x27, 16, 2);  // Set the LCD address to 0x27 for a 16 chars and 2 line display

void setup() {
  np.begin();  // Initialize the NeoPixel library
  lcd.init();  // Initialize the LCD library
  lcd.backlight();  // Turn on the LCD backlight
  Serial.begin(9600);  // Initialize the serial communication
}

void clearLCD() {
  lcd.clear();  // Clear the LCD display
  delay(100);   // Small delay for clearing to take effect
}

void loop() {
  if (Serial.available() > 0) {
    char a = Serial.read();
    Serial.print("Input received: ");
    Serial.println(a);

    if (a == 'a') {
      clearLCD();
      lcd.setCursor(0, 0);  // Move cursor to the first row, first column
      lcd.print("No elephant");
      for (int i = 0; i < 8; i++) {
        np.setPixelColor(i, np.Color(103, 189, 170));  // Set pixels to green
      }
      np.show();  // Write the data to the pixels
      delay(500);  // Wait for 0.5 seconds
      
    } else if (a == 'b') {
      clearLCD();
      lcd.setCursor(0, 0);  // Move cursor to the first row, first column
      lcd.print("Elephant ahead!");
      for (int i = 0; i < 8; i++) {
        np.setPixelColor(i, np.Color(175, 54, 60));  // Set pixels to red
      }
      np.show();  // Write the data to the pixels
      delay(500);  // Wait for 0.5 seconds
      
    } else if (a == 'c') {
      clearLCD();
      lcd.setCursor(0, 0);  // Move cursor to the first row, first column
      lcd.print("Alert mode");
      for (int i = 0; i < 8; i++) {
        np.setPixelColor(i, np.Color(231, 199, 31));  // Set pixels to yellow
      }
      np.show();  // Write the data to the pixels
      delay(500);  // Wait for 0.5 seconds
      
    } else {
      clearLCD();
      lcd.setCursor(0, 0);  // Move cursor to the first row, first column
      lcd.print("Invalid input");
      for (int i = 0; i < 8; i++) {
        np.setPixelColor(i, np.Color(0, 0, 0));  // Turn off LEDs
      }
      np.show();  // Write the data to the pixels
      delay(1500);  // Wait for 1.5 seconds
    }
  }
}