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

const int temp = 15;
DHTesp dhtSensor;
TempAndHumidity data;
const int tri = 2; 
const int ec = 4;
long duration;
float distance;

char ssid[]="Wokwi-GUEST";
char pass[]="";
unsigned long myChannelNumber=2079406;
const char* myWriteAIPKey="3BMMK3HCYSLMJY25";
int statuscode;
WiFiClient client;

void setup() {
  // put your setup code here, to run once:
  Serial.begin(115200);
  pinMode(tri, OUTPUT);
  pinMode(temp, INPUT);
  pinMode(ec, INPUT);
  WiFi.mode(WIFI_STA);
  ThingSpeak.begin(client);

  dhtSensor.setup(temp,DHTesp::DHT22);
}

void loop() 
{
  getwifi();
  distance = getdistance();
  data = dhtSensor.getTempAndHumidity();
  Serial.println("Distance: "+String(distance));
  Serial.println("Humi: "+String(data.humidity)+ "%c");
  Serial.println("Temp: "+String(data.temperature) +"%");
  ThingSpeak.setField(1,data.temperature);
  ThingSpeak.setField(2,data.humidity);
  ThingSpeak.setField(3,distance);
  statuscode=ThingSpeak.writeFields(myChannelNumber,myWriteAIPKey);

  if(statuscode==200)
  {
    Serial.println("updated");
  }
    else
    {
      Serial.println("error");
    }
  
  Serial.println("----------------");

  delay(15000);
}

long getdistance()
{
digitalWrite(tri, LOW);
delayMicroseconds(2);
digitalWrite(tri, HIGH);
delay(10);
digitalWrite(tri, LOW);
duration=pulseIn(ec,HIGH);
return(duration*0.034/2)+1;
}

void getwifi()
{
  if(WiFi.status()!=WL_CONNECTED)
  {
    Serial.print("attempting");
    while(WiFi.status()!=WL_CONNECTED)
    {
      WiFi.begin(ssid,pass);
      Serial.print(".");
      delay(5000);
    }
  }
  Serial.println("CONNECTED");
}