#define BLYNK_TEMPLATE_ID "TMPL3tN1mYEtw"
#define BLYNK_TEMPLATE_NAME "Food Dispenser"
#define BLYNK_AUTH_TOKEN "tMmw5W6v2_PNqIpYoFlI-Fpc2io6_cZl"
#include <WiFi.h>
#include <BlynkSimpleEsp32.h>
char ssid[] = "Wokwi-GUEST";
char pass[] = "";
char auth[] = BLYNK_AUTH_TOKEN;
#include <HX711.h>
#include <ESP32Servo.h>

HX711 load;
Servo dispenser;
bool gateOpen = true;

float getDistance() {
  digitalWrite(5, LOW);
  delayMicroseconds(2);
  digitalWrite(5, HIGH);
  delayMicroseconds(10);
  digitalWrite(5, LOW);

  long duration = pulseIn(18, HIGH);
  float distance = (duration * 0.0344) / 2;
  return distance;
}

float getWeight() {
  if (load.is_ready()) {
    long reading = load.read();
    reading = map(reading, 0, 2100, 0, 5000);
    float weight = reading / 1000.0;
    return weight;
  } else {
    Serial.println("HX711 not connected.");
    return 0.0;
  }
}

void setup() {
  Serial.begin(115200);
  Serial.print("Connecting to WiFi");
  WiFi.begin("Wokwi-GUEST", "", 6);
  while (WiFi.status() != WL_CONNECTED) {
    delay(100);
    Serial.print(".");
  }
  Serial.println(" Connected!");
  Blynk.begin(auth, ssid, pass);

  pinMode(5, OUTPUT);
  pinMode(18, INPUT);

  load.begin(21, 22);
  dispenser.attach(13);
  dispenser.write(0);
}

void loop() {
  if (Blynk.connected()) {
    Blynk.run();
  } else {
    Serial.println("Blynk not connected!");
  }

  float distance = getDistance();
  Serial.print("Distance: ");
  Serial.println(distance);

  float weight = getWeight();
  Serial.print("Weight: ");
  Serial.println(weight);

  // Send data to Blynk
  Blynk.virtualWrite(V1, weight);
  Blynk.virtualWrite(V2, distance);

  if ((distance < 150.0 && weight >= 1) && gateOpen) {
    dispenser.write(90); 
    Serial.println("The pet is present and the container is filled");
  } else {
    dispenser.write(0);  
    Serial.println("Conditions not met. Lid closed.");
  }
  delay(1000);
}

BLYNK_WRITE(V0) {
  int pinValue = param.asInt();
  gateOpen = (pinValue == 1);
}