// Define Blynk template ID, name, and auth token  
#define BLYNK_TEMPLATE_ID "TMPL6pa6NnJjs"  
#define BLYNK_TEMPLATE_NAME "ExamAFS"  
#define BLYNK_AUTH_TOKEN "xLyF2e3iVQja_xEuLGLsE1e_zhMcUhmh"  

#include <BlynkSimpleEsp32.h>  
#include <LiquidCrystal.h>  
#include <ESP32Servo.h>  
#include <WiFi.h>  

const char* ssid = "Wokwi-GUEST";  
const char* password = ""; // If no password is needed, keep this empty.  

// Define pin numbers.  
#define BUZZER_PIN 25 // Example buzzer pin.  
#define LCD_RS 19  
#define LCD_E 23  
#define LCD_D4 18   
#define LCD_D5 21   
#define LCD_D6 5   
#define LCD_D7 15   

// Create instances for classes.  
LiquidCrystal lcd(rs, enable, d4, d5, d6, d7);  
Servo myServo; // Create a servo object  
int happiness = 50;  
int sadness = 50;  

BLYNK_WRITE(V0) { /* Start button functionality */ }  
BLYNK_WRITE(V1) { /* Feed button functionality */ }  
BLYNK_WRITE(V2) { /* Energy button functionality */ }  

void sadSoundAlarm() {  
    tone(BUZZER_PIN, 1000); // Example frequency for the buzzer  
}  

void setup() {  
    Serial.begin(115200);  
    WiFi.begin(ssid, password); // Start Wi-Fi connection  

    while (WiFi.status() != WL_CONNECTED) {  
        delay(1000);  
        Serial.println("Connecting..."); // Missing quote added  
    }  
    Serial.println("Connected!");  

    Blynk.begin(BLYNK_AUTH_TOKEN, ssid, password);  
    
    lcd.begin(16, 2);  
    myServo.attach(22); // Ensure you use the correct pin for the servo.  
}  

void loop() {  
    Blynk.run();  
    
    lcd.setCursor(0, 0); // Set cursor at row=0 col=0 on display  
    lcd.print("Hap:");  
    lcd.print(happiness);  

    lcd.setCursor(8, 0); // Set cursor at row=0 col=8 on display  
    lcd.print("Sad:");  
    lcd.print(sadness);  

    Blynk.virtualWrite(V3, happiness); // Update happiness value on app continuously based on changes in values.  
    Blynk.virtualWrite(V4, sadness);     
}