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

DHTesp dhtSensor;
TempAndHumidity data;
const int DHT_PIN = 15;

char ssid[] = "Wokwi-GUEST";
char pass[] = "";
WiFiClient client;
unsigned long myChannelNumber = 2446224;
const char * myWriteAPIkey = "UVNWF9IEWVHN1XML";

const int trig = 2;
const int echo = 4;

long duration;
//float distance;
long distance;

int statuscode;

void setup() 
{
  // put your setup code here, to run once:
  Serial.begin(115200);
  dhtSensor.setup(DHT_PIN, DHTesp::DHT22);

  pinMode(trig, OUTPUT);
  pinMode(echo, INPUT);
  WiFi.mode(WIFI_STA);
  ThingSpeak.begin(client);
}

void loop() 
{
  data = dhtSensor.getTempAndHumidity();
  Serial.println("Tempearture:" + String(data.temperature,2)+ "°C");
  Serial.println("Humidity:" + String(data.humidity,1)+ "%");
  Serial.println("------");
  delay(1000); // this speeds up the simulation

  digitalWrite(trig, LOW);
  delayMicroseconds(2); // this speeds up the simulation
  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.print(("\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 sucessful.");
  }
  else
  {
    Serial.println("Problem writing data.HTTP error code :" + String(statuscode));
  }
  delay(15000);
}