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

DHTesp dhtSensor;
TempAndHumidity data;

const int TRIG = 27;
const int ECHO = 14;
const int DHT_PIN = 26;

float distance;
long duration;

char ssid[] ="Wokwi-GUEST";
char pass[] ="";

WiFiClient client;

unsigned long CHANNEL_ID = 2599355;

const char* WRITE_API_KEY = "7VF3GZ90EEF60N70";
int status;

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);
  delay(1000);
}

void getWiFi(){
  if(WiFi.status()!=WL_CONNECTED)
  {
    Serial.println("attempting to connect");
    while(WiFi.status()!=WL_CONNECTED){
      WiFi.begin(ssid,pass);
      Serial.print(".....");
      delay(5000);
    }
    Serial.println("\nconnected");
  }
}

void loop() {
  getWiFi();
  data = dhtSensor.getTempAndHumidity();
  digitalWrite(TRIG, LOW);
  delayMicroseconds(10);
  digitalWrite(TRIG, HIGH);
  duration = pulseIn(ECHO, HIGH);
  distance = 0.017*duration;
  Serial.println("distance : "+String(distance)+" cm");
  Serial.println("humidity : "+String(data.humidity));
  Serial.println("temperature : "+String(data.temperature));
  Serial.println("---------------");
  // put your main code here, to run repeatedly:
  // this speeds up the simulation
  ThingSpeak.setField(1,distance);
  ThingSpeak.setField(2,data.humidity);
  ThingSpeak.setField(3,data.temperature);
  status = ThingSpeak.writeFields(CHANNEL_ID,WRITE_API_KEY);

  if(status == 200){
    Serial.println("channel Updated");
    Serial.println("---------------");
  }
  else{
    Serial.println("Problem with writing data , HTTP error code : " +String(status));
    Serial.println("---------------");
  }
  delay(10000);
}