#include <WiFi.h>
#include <PubSubClient.h>
#include <ArduinoJson.h>
#include <ESP32Servo.h>
#include <LiquidCrystal_I2C.h>

#define pinServo 19
#define pinPotensio 13

const char* ssid ="Wokwi-GUEST";
const char* password ="";

const char* usermqtt ="rosmiupy:rosmiupy";
const char* passmqtt ="e3SGMBDFEbplj_46R8Zi9nLDf2vf3FfC";
const char* mqtt_server ="armadillo-01.rmq.cloudamqp.com";

const char* topicAllSensor ="allsensor";
const char* topicPotensiometer ="potensio";
const char* topicServo ="servo";


Servo myServo;
LiquidCrystal_I2C lcd(0x27, 16, 2);
int val;

unsigned long lastMsg = 0;
WiFiClient espClient;
PubSubClient client(espClient);
DynamicJsonDocument dataEncode(1024);


void setup_wifi(){

  delay(10);
  Serial.println();
  Serial.print("Connecting to ");
  Serial.print(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 reconnect() {
  // Loop until we're reconnected
  while (!client.connected()) {
    Serial.print("Attempting MQTT connection...");
    // Create a random client ID
    String clientId = "ESP8266Client-";
    clientId += String(random(0xffff), HEX);
    // Attempt to connect
    if (client.connect(clientId.c_str(), usermqtt, passmqtt)) {
      Serial.println("Connected");
    } 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);
  myServo.attach(pinServo);
  lcd.init();
  lcd.backlight();

  setup_wifi();
  client.setServer(mqtt_server, 1883);

}

void loop() {
  if (!client.connected()){
    reconnect();
  }
  client.loop();

  val = analogRead(pinPotensio);
  Serial.println("Potensio: "+ String(val));
  
  lcd.setCursor(0,0);
  lcd.print("Potensio: "+ String(val) + " ");

  val = map(val, 0, 4095, 0, 180);
  lcd.setCursor(0, 1);
  lcd.print("Derajat: "+ String(val)+ " ");

  myServo.write(val);
  delay(15); 

  char buffer[256];
  size_t n = serializeJson(dataEncode, buffer);
  client.publish(topicAllSensor, buffer, n);
}