#include<WiFi.h>
#include <HTTPClient.h>

 const char * ssid = "Wokwi-GUEST";

const char * password = "";
String server = "http://maker.ifttt.com";

String eventName = "distance";

String IFTTT_Key = "geNrQhEwcOHJV1RpKpGLKjB5SDpIP1x0AMYDI1k2mMd";

String IFTTTUrl="https://maker.ifttt.com/trigger/{distance}/json/with/key/geNrQhEwcOHJV1RpKpGLKjB5SDpIP1x0AMYDI1k2mMd";

const int trigPin = 5;
const int echoPin = 18;
int value1;
String value2;
int value3;
int value4

int Size =50;//size of bin in cm
//define sound speed in cm/uS
#define SOUND_SPEED 0.034
#define CM_TO_INCH 0.393701

long duration;
float distanceCm;
float distanceInch;

 
void setup()
{

Serial.begin(115200); // Starts the serial communication
  pinMode(trigPin, OUTPUT); // Sets the trigPin as an Output
  pinMode(echoPin, INPUT); // Sets the echoPin as an Input
   WiFi.mode(WIFI_STA);

  WiFi.begin(ssid, password);

  while (WiFi.status() != WL_CONNECTED) {
    
  delay(500);

    Serial.print(".");
    }

  Serial.println("Viola, Connected !!!");
}
void sendDataToSheet(void)

{

  String url = server + "/trigger/" + eventName + "/with/key/" + IFTTT_Key + "?value1=" + String((int)value1) + "&value2="+String((String)value2);  

  Serial.println(url);

  //Start to send data to IFTTT

 
 HTTPClient http;

  Serial.print("[HTTP] begin...\n");

  http.begin(url); //HTTP



  Serial.print("[HTTP] GET...\n");

  // start connection and send HTTP header

  int httpCode = http.GET();

  // httpCode will be negative on error

  if(httpCode > 0) {

    // HTTP header has been send and Server response header has been handled

    Serial.printf("[HTTP] GET... code: %d\n", httpCode);

    // file found at server

    if(httpCode == HTTP_CODE_OK) {

      String payload = http.getString();

      Serial.println(payload);

    }

  } else {

    Serial.printf("[HTTP] GET... failed, error: %s\n", http.errorToString(httpCode).c_str());

  }

  http.end();



}



void loop() 
{
  
 digitalWrite(trigPin, LOW);
  delayMicroseconds(2);
  // Sets the trigPin on HIGH state for 10 micro seconds
  digitalWrite(trigPin, HIGH);
  delayMicroseconds(10);
  digitalWrite(trigPin, LOW);
  
  // Reads the echoPin, returns the sound wave travel time in microseconds
  duration = pulseIn(echoPin, HIGH);
  
  // Calculate the distance
  value1 = duration * SOUND_SPEED/2;
  value2= "cm";
  value3=(value1/50)*100;
  value4="%"
  sendDataToSheet();
  
  // Convert to inches
  distanceInch = distanceCm * CM_TO_INCH;
  
  // Prints the distance in the Serial Monitor
  Serial.print("Distance (cm): ");
  Serial.println(distanceCm);
  Serial.print("Distance (inch): ");
  Serial.println(distanceInch);
  
  delay(1000);
}