#include <DHTesp.h> 
#include <WiFi.h>
#include <ThingSpeak.h>
DHTesp dhtSensor;
TempAndHumidity data;
const int DHT_PIN = 15;
char ssid[] = "Wokwi-GUEST";
char pass[] = "";
WiFiClient client;
unsigned long mychannelNumber = 2446308;
const char * myWriteAPIKey = "SDPVRDAHVDNO0MV9";
const int trig = 19;
const int echo = 17;
long duration;
long distance;
int statusCode;
void setup()
 {
  // put your setup code here, to run once:
  Serial.begin(115200);
  pinMode(trig, OUTPUT);
  pinMode(echo, INPUT);
  dhtSensor.setup(DHT_PIN, DHTesp::DHT22);
  WiFi.mode(WIFI_STA);
  ThingSpeak.begin(client);
}

void loop() {
  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));
  data = dhtSensor.getTempAndHumidity();
  Serial.println("Temperature: " + String(data.temperature,2)+"°C");
  Serial.println("Humidity: " + String(data.humidity,1)+"%");
  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("\nConnected.");
    }
  ThingSpeak.setField(1,data.temperature);
  ThingSpeak.setField(2,data.humidity);
  ThingSpeak.setField(3, distance);
  statusCode = ThingSpeak.writeFields(mychannelNumber,myWriteAPIKey);

  if(statusCode == 200){
    Serial.println("Channel update successful.");
  }
  else{
    Serial.println("Problem Writing data. HTTP error code:" + String(statusCode));

  }
  delay(15000);
}