#include<WiFi.h>
#include<ThingSpeak.h>
#include "DHTesp.h"
DHTesp dhtsensor;
TempAndHumidity data;
const int DHT_PIN = 15;
const int trig=2;
const int echo=4;
char ssid[]="Wokwi-GUEST";
char pass[]="";
WiFiClient client;
unsigned long myChannelNumber = 2078955;
const char * myWriteAPIKey = "1DK3X4BS4Q1GY85C";
long duration;
long distance;
int statusCode;

void setup() {
  // put your setup code here, to run once:
  Serial.begin(115200);
  pinMode(trig, OUTPUT);
  pinMode(echo, OUTPUT);
  Serial.begin(115200);
  dhtsensor.setup(DHT_PIN,DHTesp::DHT22);
  WiFi.mode(WIFI_STA);
  ThingSpeak.begin(client);
}

void loop() {
  // put your main code here, to run repeatedly:
  digitalWrite(trig,LOW);
  delayMicroseconds(2);
  digitalWrite(trig,HIGH);
  delayMicroseconds(10);
  digitalWrite(trig, LOW);
  duration = pulseIn(echo,HIGH);
  distance=(duration * 0.034/2) + 4;
  Serial.println("Distance" + String(distance));
  delay(1000);
   data=dhtsensor.getTempAndHumidity();
  Serial.println("Humi:"+String(data.humidity));
  Serial.println("temp:"+String(data.temperature));
  Serial.println("---------");
  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("\Connected.");
    ThingSpeak.setField(1,data.humidity);
    ThingSpeak.setField(2,data.temperature);
    ThingSpeak.setField(3,distance);
    statusCode = ThingSpeak.writeFields(myChannelNumber,myWriteAPIKey);
  }
  if(statusCode ==200)
  {
    Serial.println("Channel update Successfull:");
  }
  else{
    Serial.println(" problem writing data.HTTP error_code:"+ String(statusCode));
  }

  delay(15000); // this speeds up the simulation
}