#include <ESP8266WiFi.h> //Required Library
#include <PubSubClient.h>  //Required Library

const char* ssid = "Chirag";
const char* password = "welcome123";
const char* mqttServer = "ec2-18-217-227-236.us-east-2.compute.amazonaws.com"; //I3 broker
const int mqttPort = 1883; //Your port number
const char* mqttUser = "chirag";
const char* mqttPassword = "garethbale7";


WiFiClient ESPClient;
PubSubClient client(ESPClient);

void setup() {

  Serial.begin(115200);


  delay(500);
  WiFi.begin(ssid, password);

  while (WiFi.status() != WL_CONNECTED) {
    delay(500);
    Serial.println("USC AIR QUALITY MONITOR");
    Serial.println("Initializing......................");
    Serial.println("Please wait while connecting to WiFi");
  }

  Serial.println("Connected to WiFi");
  client.setServer(mqttServer, mqttPort);
  while (!client.connected()) {
    Serial.println("Connecting to MQTT...");

    if (client.connect("USC", mqttUser, mqttPassword )) {

      Serial.println("connected to USC I3 BROKER");

    } else {

      Serial.print("ERROR > failed with state ");
      Serial.print(client.state());
      delay(2000);

    }
  }

  client.publish("USC-TEST", "Message from ESP8266/ESP32");

}

void loop() {
  client.loop();

int h = analogRead(A0);
delay(1000);
String msg = String(h);
  Serial.println("Air Quality = ");
  Serial.println(msg);
 int numh = h;
 char cshr[16];
 itoa(numh, cshr, 10);



delay(1500);
  client.publish("Air Quality(ppm) = ", cshr);
}