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

DHTesp dht;
TempAndHumidity data;
const int dhtPin = 26;
const int trigPin = 14;
const int echoPin = 12;

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

unsigned long myChannelNumber = 2581089;
const char* myWriteAPIKey = "YO4SIO7EHQDPJEJ6";
unsigned long myChannelNumber2 = 2581403;
const char* myWriteAPIKey2 = "KCNW8HSX0G1BJZLL";
int statusCode;

void setup() {
  // put your setup code here, to run once:
  Serial.begin(115200);
  Serial.println("Hello, ESP32!");
  pinMode(trigPin, OUTPUT);
  pinMode(echoPin, INPUT);
  dht.setup(dhtPin, DHTesp::DHT22);
  WiFi.mode(WIFI_STA);
  ThingSpeak.begin(client);
  delay(1000);
}

void getwifi()
{
  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");
}

void loop() {
  // put your main code here, to run repeatedly:
  delay(10); // this speeds up the simulation
  getwifi();
  data = dht.getTempAndHumidity();
  Serial.println("Humidity = "+String(data.humidity));
  Serial.println("Temperature = "+String(data.temperature));
  digitalWrite(trigPin, LOW);
  delayMicroseconds(2);
  digitalWrite(trigPin, HIGH);
  delayMicroseconds(10);
  digitalWrite(trigPin, LOW);
  float duration = pulseIn(echoPin, HIGH);
  int dist = (duration*0.03405)/2;
  Serial.println("Distance = "+String(dist));

  ThingSpeak.setField(1, data.humidity);
  ThingSpeak.setField(2, data.temperature);
  
  statusCode=ThingSpeak.writeFields(myChannelNumber, myWriteAPIKey);
  ThingSpeak.setField(1, dist);
  statusCode=ThingSpeak.writeFields(myChannelNumber2, myWriteAPIKey2);
  if(statusCode == 200)
  {
    Serial.println("Channel update successful");
  }
  else
  {
    Serial.println("Problem Writing data: HTTp error code:"+String(statusCode));
  }
  delay(15000);
}