#define BLYNK_TEMPLATE_ID "TMPL6WOIdo-Gz"
#define BLYNK_TEMPLATE_NAME "Animal Feed System"
#define BLYNK_AUTH_TOKEN "0jzbPzGLbMZnKSdlAPcTzlyqQjbHDJ86"

#include <WiFi.h>
#include <BlynkSimpleEsp32.h>
#include <LiquidCrystal_I2C.h>
#include <Servo.h>


const char* SSID = "Wokwi-GUEST";     // For simulation
const char* PASSWORD = "";            // No password needed for Wokwi-GUEST


// LCD (I2C address 0x27)
LiquidCrystal_I2C lcd(0x27, 16, 2);

// Pins
#define BUZZER_PIN 18
#define SERVO_PIN 19

// Virtual Pins
#define VPIN_START  V1
#define VPIN_FEED   V2
#define VPIN_ENERGY V3

int happiness = 50;
int sadness = 50;

Servo myServo;

void setup() {
  pinMode(32, OUTPUT);
  Serial.begin(115200);
  Serial.println("Connecting to WiFi...");

  WiFi.begin(SSID, PASSWORD);
  while (WiFi.status() != WL_CONNECTED) {
    delay(500);
    Serial.print(".");
  }

  Serial.println();
  Serial.println("WiFi is connected.");
  Serial.println("IP address:");
  Serial.println(WiFi.localIP());

  Blynk.begin(BLYNK_AUTH_TOKEN, SSID, PASSWORD);

  lcd.init();
  lcd.backlight();
  lcd.setCursor(0, 0);
  lcd.print("Pet System Init");
  
  myServo.attach(SERVO_PIN);
  pinMode(BUZZER_PIN, OUTPUT);
  
  delay(2000);
  lcd.clear();
}

void loop() {
  Blynk.run();
  displayLevels();
}

// START Button: Reduce feed -> Decrease happiness, increase sadness
BLYNK_WRITE(VPIN_START) {
  if (param.asInt() == 1) {
    happiness = max(happiness - 10, 0);
    sadness = min(sadness + 10, 100);
  }
}

// FEED Button: Increase happiness, decrease sadness
BLYNK_WRITE(VPIN_FEED) {
  if (param.asInt() == 1) {
    happiness = min(happiness + 10, 100);
    sadness = max(sadness - 10, 0);

    if (happiness == 100) {
      myServo.write(90);  // Release pet
      Blynk.notify("Pet is FREE! Happiness MAX!");
      delay(2000);
      myServo.write(0);   // Reset position
    }
  }
}

// ENERGY Button: Decrease happiness, increase sadness
BLYNK_WRITE(VPIN_ENERGY) {
  if (param.asInt() == 1) {
    happiness = max(happiness - 10, 0);
    sadness = min(sadness + 10, 100);

    if (sadness == 100) {
      digitalWrite(BUZZER_PIN, HIGH);
      Blynk.notify("Danger! Pet is too sad!");
      lcd.setCursor(0, 1);
      lcd.print("Danger Condition!");
      delay(2000);
      digitalWrite(BUZZER_PIN, LOW);
    }
  }
}

void displayLevels() {
  lcd.setCursor(0, 0);
  lcd.print("Happy:");
  lcd.print(happiness);
  lcd.print(" Sad:");
  lcd.print(sadness);
}