#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 =  2076923;
const char * myWriteAPIKey = "MEDDFM7X6J964YCG";

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

long duration;
long distance;

int statusCode;

void setup() {
  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();

  delay(1000);
  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));
  Serial.println("Humi: "+ String(data.humidity));
  Serial.println("Temp: "+ String(data.temperature));
  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("\Connected.");


ThingSpeak.setField(1,data.humidity);
  ThingSpeak.setField(2, data.temperature);
  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));
  }
}