#include <DHTesp.h>

#include <WiFi.h>
#include <ThingSpeak.h>
DHTesp dhtsensor;
TempAndHumidity data;
const int  DHT_PIN = 16;
char ssid[]="Wokwi-GUEST";
char pass[]="";
WiFiClient client;
unsigned long myChannelNumber= 2624969;
const char * myWriteAPIKey="F1309Z15V2C7TWMD" ;
int statusCode;
#define trigger_pin 27
#define echo_pin 33
void setup() {

  Serial.begin(115200);
  
  WiFi.mode(WIFI_STA);
  ThingSpeak.begin(client);
  dhtsensor.setup(DHT_PIN, DHTesp::DHT22);
  pinMode(echo_pin, INPUT);
  pinMode(trigger_pin, OUTPUT);
  pinMode(21, OUTPUT);
}

int wdistance(){
 digitalWrite(trigger_pin,LOW);
 delay(10);
 digitalWrite(trigger_pin,HIGH);
 delay(100);
 digitalWrite(trigger_pin,LOW);
  float d=pulseIn(echo_pin,HIGH);
 return(d*0.034/2)+1;

 delay(1000);
 
}
void loop() {
   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("\n connected");
   }
   delay(10);
  int c=wdistance();
  Serial.println(String(c));
  data = dhtsensor.getTempAndHumidity();  
  Serial.println("Humi: " + String(data.humidity,1));
  Serial.println("Temp: " + String(data.temperature,2));
  delay(1000);
  if(data.humidity<30 && data.temperature>70 && c>150){
    digitalWrite(21, HIGH);
  }
  else  if(data.humidity>30 && data.temperature<70 && c<150)
  {
    digitalWrite(21, LOW);
  }
  ThingSpeak.setField(1,data.humidity);
  ThingSpeak.setField(2,data.temperature);
  ThingSpeak.setField(3,c);
  statusCode=ThingSpeak.writeFields(myChannelNumber,myWriteAPIKey);
  
  if(statusCode == 200){
    Serial.println("channel updated success");
  }
  else{
    Serial.println("Problem writing data http error code :"+
    String(statusCode));
  }
  delay(10);
}