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

// Substitua pelas suas informações de rede
const char* ssid = "Wokwi-GUEST";
const char* password = "";

const int servoPin = 18;
int pos = 0;
bool activate = false;
double time_init = 0.0;

// Substitua pelas suas informações do broker MQTT
const char* mqttServer = "broker.hivemq.com";
const int mqttPort = 1883;
//const char* mqttUser = "USUARIO_MQTT";
//const char* mqttPassword = "SENHA_MQTT";

Servo servo;
WiFiClient espClient;
PubSubClient client(espClient);

void callback(char* topic, byte* payload, unsigned int length) {
  String message = "";
  for (unsigned int i = 0; i < length; i++) {
    message += (char)payload[i];
  }
  
  if (message.equals("ON")) {
    time_init = millis()/1000.0;
    activate = true;
    Serial.print('Ligou');
  } else if (message.equals("OFF")) {
    activate = false;
    time_init = 0.0;
    Serial.print('Desligou');
  }
}

void reconnect() {
  // Loop until we're reconnected
  while (!client.connected()) {
    Serial.print("Attempting MQTT connection...");
    // Attempt to connect
    if (client.connect("megax036")) {
      Serial.println("connected");
      // Subscribe
      client.subscribe("on/off");
    } 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(9600);
  Serial.print("Connecting to WiFi");
  WiFi.begin(ssid,password);
  while (WiFi.status() != WL_CONNECTED) {
    delay(100);
    Serial.print(".");
  }
  Serial.println(" Connected!");
  
  servo.attach(servoPin, 500, 2400);
  
  client.setServer(mqttServer, mqttPort);
  client.setCallback(callback);
}

void loop() {
  String active_another = "ON2", desactive_another = "OFF2";
  if (!client.connected()) {
    reconnect();
  }

  if(activate){
    for (pos = 0; pos <= 180; pos += 1) {
      servo.write(pos);
      delay(15);
    }
    for (pos = 180; pos >= 0; pos -= 1) {
      servo.write(pos);
      delay(15);
    }

    if(((millis()/1000.0)- time_init) >= 5.0){
      if(client.publish("MacGyver/saida", active_another.c_str())){
        Serial.println("Enviado Ativação do Motor");
      }
    }
  }else{
    if(client.publish("MacGyver/saida", desactive_another.c_str())){
      Serial.println("Enviado Desativação do Motor");
    }
  }
  delay(500);

  client.loop();
}