#include <DHTesp.h>
#include <WiFi.h>
#include<ThingSpeak.h>
char ssid[]="Wokwi-GUEST";
char pass[]="";
WiFiClient client;
unsigned long myChannelNumber=2078902;
const char* mWriteAPIKey="IK5JWQJFBHKCNUG4";
int statusCode;
const int dhtpin=13;
DHTesp dhtsensor;
TempAndHumidity data;
const int trig=2;
const int echo=4;
long duration;
int distance;

void setup() {
  Serial.begin(115200);
  dhtsensor.setup(dhtpin,DHTesp::DHT22);
  pinMode(trig,OUTPUT);
  pinMode(echo,INPUT);
  WiFi.mode(WIFI_STA);
  ThingSpeak.begin(client);
}
void loop() {
  data=dhtsensor.getTempAndHumidity();
  Serial.println("Humidity:"+String(data.humidity));
  Serial.println("Temperature :"+String(data.temperature));
  digitalWrite(trig,LOW);
  delayMicroseconds(2);
  digitalWrite(trig,HIGH);
  delayMicroseconds(10);
  digitalWrite(trig,LOW);
  duration=pulseIn(echo,HIGH);
  distance=duration*0.034/2+1;
  Serial.println("Distance:"+String(distance));
  if(WiFi.status()!=WL_CONNECTED)
  {
    Serial.print("Attempting to Connect");
    while(WiFi.status()!=WL_CONNECTED)
    {
      WiFi.begin(ssid,pass);
      Serial.print('.');
      delay(5000);
    }
  }
  Serial.println("\nConnected");
  ThingSpeak.setField(1,data.humidity);
  ThingSpeak.setField(2,data.temperature);
  ThingSpeak.setField(3,distance);
  statusCode=ThingSpeak.writeFields(myChannelNumber,mWriteAPIKey);
  if(statusCode==200)
  {
    Serial.println("Channel update succcessful");
  }
  else
  {
    Serial.println("Problem Writing data: HTTp error code:"+String(statusCode));
  }
  delay(15000);
  }