#include <WiFi.h>
#include <PubSubClient.h>
#include <ESP32Servo.h>

#define BUZZER_PIN 23
#define SERVO_PIN 12
const char* ssid = "Wokwi-GUEST";
const char* password = "";
const char* mqtt_server = "test.mosquitto.org";
 
WiFiClient espClient;
PubSubClient client(espClient);
Servo servoMotor;
 
void setup_wifi() {
 
  delay(10);
  // We start by connecting to a WiFi network
  Serial.println();
  Serial.print("Connecting to ");
  Serial.println(ssid);
 
  WiFi.mode(WIFI_STA);
  WiFi.begin(ssid, password);
 
  while (WiFi.status() != WL_CONNECTED) {
    delay(500);
    Serial.print(".");
  }
 
  Serial.println("");
  Serial.println("WiFi connected");
  Serial.println("IP address: ");
  Serial.println(WiFi.localIP());
}
 
void callback(char* topic, byte* payload, unsigned int length) {
  pinMode(BUZZER_PIN, OUTPUT);
  servoMotor.attach(SERVO_PIN);
  Serial.print("Message arrived in topic: ");
  Serial.println(topic);
 
  Serial.print("Message:");
 
  // Create a character array to store the payload data
  char payloadString[length + 1]; // +1 for null-terminator
  for (int i = 0; i < length; i++) {
    payloadString[i] = (char)payload[i];
  }
  payloadString[length] = '\0'; // Null-terminate the string
  // payload = atoi(payloadString);
 
  // Print the payload data
  // Serial.println(payloadString);

    // Convert payloadString to an integer
  int intValue = atoi(payloadString);
 
  // Print the payload data as an integer
  Serial.print("Payload as Integer: ");
  Serial.println(intValue);

  if (strcmp(topic, "Affat/kpp/suhu") == 0) {
    if (intValue >= 50) {
      tone(BUZZER_PIN, 500);
    } else {
      noTone(BUZZER_PIN);
    }
  }
  if (strcmp(topic, "Affat/kpp/jarak") == 0) {
    if (intValue >= 100) {
      servoMotor.write(90);
    } else {
      servoMotor.write(0);
    }
  }
 
  // Now, you can use the 'intValue' variable as an integer.
 
 
 
  // Now, you can use the payloadString variable to store or process the payload data.
 
  Serial.println("-----------------------");
}
 
void reconnect() {
  // Loop until we're reconnected
  while (!client.connected()) {
    Serial.print("Attempting MQTT connection...");
    // Create a random client ID
    String clientId = "mqtt-explorer-584bcd18";
    clientId += String(random(0xffff), HEX);
    // Attempt to connect
    if (client.connect(clientId.c_str())) {
      Serial.println("Connected");
      client.subscribe("Affat/kpp/suhu");
      client.subscribe("Affat/kpp/kelembaban");
      client.subscribe("Affat/kpp/jarak");
      //client.subscribe("User1/Data");
    } else {
      Serial.print("failed, rc=");
      Serial.print(client.state());
      Serial.println(" try again in 5 seconds");
      // Wait 5 seconds before retrying
      delay(5000);
    }
  }
}
 
void setup() {
  Serial.begin(115200);
    setup_wifi();
  client.setServer(mqtt_server, 1883);
  client.setCallback(callback);
}
 
void loop() {
 
  if (!client.connected()) {
    reconnect();
  }
  client.loop();
}