/**
   ESP32 + DHT22 Example for Wokwi
   
   https://wokwi.com/arduino/projects/322410731508073042
*/

#include "DHTesp.h"
#include <WiFi.h>
#include "PubSubClient.h"

const char * MQTTServer = "broker.emqx.io";
const char * MQTT_Topic= "nhutthien/baodong";
const char * MQTT_ID = "fb925de4-7112-4662-b0b2-593f74ed1b73";
const char * MQTT_Topic1 = "nhutthien/nhietdo";
const char * MQTT_ID1 = "fb925de4-7112-4662-b0b2-593f74ed1b73";
const char * MQTT_Topic2 = "nhutthien/doam";
const char * MQTT_ID2 = "eedbad13-954c-481e-a97d-8cfbb5ded3a4";
int Port = 1883;

WiFiClient espClient;
PubSubClient client(espClient);
const int DHT_PIN = 15;
const int ledPin = 13;

DHTesp dhtSensor;
void WIFIConnect() {
  Serial.println("Connecting to SSID: Wokwi-GUEST");
  WiFi.begin("Wokwi-GUEST", "");
  while (WiFi.status() != WL_CONNECTED) {
    delay(500);
    Serial.print(".");
  }
  Serial.println("");
  Serial.print("WiFi connected");
  Serial.print(", IP address: ");
  Serial.println(WiFi.localIP());
}
void MQTT_Reconnect() {
  while (!client.connected()) {
    if (client.connect(MQTT_ID)) {
      Serial.print("MQTT Topic: ");
      Serial.print(MQTT_Topic);
      Serial.print(" connected");
      client.subscribe(MQTT_Topic);
      Serial.println("");
    } else {
      Serial.print("failed, rc=");
      Serial.print(client.state());
      Serial.println(" try again in 5 seconds");
      delay(5000);
    }
  }
}
void MQTT1_Reconnect() {
  while (!client.connected()) {
    if (client.connect(MQTT_ID1)) {
      Serial.print("MQTT Topic: ");
      Serial.print(MQTT_Topic1);
      Serial.print(" connected");
      client.subscribe(MQTT_Topic1);
      Serial.println("");
    } else {
      Serial.print("failed, rc=");
      Serial.print(client.state());
      Serial.println(" try again in 5 seconds");
      delay(5000);
    }
  }
}
void MQTT2_Reconnect() {
  while (!client.connected()) {
    if (client.connect(MQTT_ID2)) {
      Serial.print("MQTT Topic: ");
      Serial.print(MQTT_Topic2);
      Serial.print(" connected");
      client.subscribe(MQTT_Topic2);
      Serial.println("");
    } else {
      Serial.print("failed, rc=");
      Serial.print(client.state());
      Serial.println(" try again in 5 seconds");
      delay(5000);
    }
  }
}
String stMessage;
void callback(char* topic, byte* message, unsigned int length) {
  Serial.print("Message arrived on topic: ");
  Serial.println(topic);
  Serial.print("Message: ");
  stMessage="";
  for (int i = 0; i < length; i++) {
    Serial.print((char)message[i]);
    stMessage += (char)message[i];
  }
  Serial.println(stMessage);
}

void setup() {
  Serial.begin(115200);
  WIFIConnect();
  client.setServer(MQTTServer, Port);
  client.setCallback(callback);
  client.subscribe(MQTT_Topic1);
  client.subscribe(MQTT_Topic2);
  dhtSensor.setup(DHT_PIN, DHTesp::DHT22);
  pinMode(ledPin, OUTPUT);

}

void loop() {
  if (!client.connected()) {
    MQTT_Reconnect();
    MQTT1_Reconnect();
    MQTT2_Reconnect();
  }
  client.loop();
  TempAndHumidity  data = dhtSensor.getTempAndHumidity();
  String nhietdo=String(data.temperature, 2);
  String doam=String(data.humidity, 1) ;
  Serial.println("Nhiệt độ: " + nhietdo+ "°C");
  Serial.println("Độ ẩm: " + doam+ "%");
  Serial.println("---");
  client.publish(MQTT_Topic1,nhietdo.c_str());
  client.publish(MQTT_Topic2,doam.c_str());
  delay(1000);
  if(stMessage=="warningwarning"){
    digitalWrite(ledPin,HIGH);
  }
}