//#include <ESP8266WiFi.h>
#include <WiFi.h>
#include <PubSubClient.h>
////////////////////////////////
#include <DHTesp.h>

const int DHT_PIN = 23;
DHTesp dhtSensor;
///////////////////////////////////////



const float GAMMA = 0.7;
const float RL10 = 50;

const char* ssid = "Wokwi-GUEST";
const char* password = "";
const char* mqtt_server = "test.mosquitto.org";

String my_payload;
String my_topic;

#define LIGHT_SENSOR_PIN 34


WiFiClient WOKWI_client;
PubSubClient client(WOKWI_client);

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 reconnect() {
  // Loop until we're reconnected
  while (!client.connected()) {
    Serial.print("Attempting MQTT connection...");
   
    if (client.connect("WOKWI_client")) {
      Serial.println("connected");
      client.subscribe("TOPICO_PROVA_CONTROLADORES_TEMP_Hiqvs79");     
    } 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() {
  pinMode(2, OUTPUT);  
  pinMode(15, OUTPUT);  
  pinMode(18, OUTPUT); 
  pinMode(19, OUTPUT); 
  Serial.begin(115200);
  setup_wifi();
  client.setServer(mqtt_server, 1883);
  dhtSensor.setup(DHT_PIN, DHTesp::DHT22);
  client.setCallback(callback);
}


void Conectado_Wifi(){
  if (WiFi.status())
  digitalWrite(2, HIGH);
  else
  digitalWrite(2, LOW);
}

void Conectado_Mosquito(){
  if (client.connected())
  digitalWrite(15, HIGH);
  else
  digitalWrite(15, LOW);
}

void Publica_Sensor() {
  TempAndHumidity  data = dhtSensor.getTempAndHumidity();    
  client.publish("TOPICO_PROVA_TEMP_Hivqs79",String(data.temperature, 2).c_str());
  client.publish("TOPICO_PROVA_HUMI_Hivqs79",String(data.humidity, 2).c_str());
  Serial.println("Temp: " + String(data.temperature, 2) + "°C");
  Serial.println("Humidity: " + String(data.humidity, 1) + "%");

  int analogValue = analogRead(LIGHT_SENSOR_PIN);
  float voltage = analogValue / 1024. * 5;
  float resistance = 2000 * voltage / (1 - voltage / 5);
  float lux = pow(RL10 * 1e3 * pow(10, GAMMA) / resistance, (1 / GAMMA));
  Serial.println("Light: " + String(lux) + " ");
  Serial.print("Analog value LDR: ");
  Serial.println(analogValue);

  client.publish("TOPICO_PROVA_LUX_Hivqs79",String(lux, 2).c_str());
  

  Serial.println("---");
  delay(1000); // Wait for a new reading from the sensor (DHT22 has ~0.5Hz sample rate)
}

void callback(char* topic, byte* payload, unsigned int length) {
  Serial.print("Message arrived [");
  Serial.print(topic);
  Serial.print("] ");

  // FUNÇÃO PARA CONCATENAR MSG
  String conc_payload;
  for (int i = 0; i < length; i++) {
    conc_payload += ((char)payload[i]);
  }
  my_topic = topic;
  my_payload = conc_payload;
  Serial.println(conc_payload);
}

void recebe_dados(){
  if (my_payload == "0")
    digitalWrite(19, HIGH);
  else {
    digitalWrite(19, LOW);
  }

  if (my_payload == "2") {
    digitalWrite(18, HIGH);
  } else {
    digitalWrite(18, LOW);
  }

    
    
}


void loop() {
  reconnect();
  Conectado_Wifi();
  Conectado_Mosquito();
  Publica_Sensor();
  client.loop();
  recebe_dados();
}