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

const char* ssid = "Wokwi-GUEST";
const char* password = "";

const int trigPin = 18;
const int echoPin = 19;

long duration;
float distance;

void setup() {
  // Put your setup code here, to run once:
  Serial.begin(115200);
  
  pinMode(trigPin, OUTPUT);
  pinMode(echoPin, INPUT);

  Serial.print("Connecting to ");
  Serial.println(ssid);

  WiFi.begin(ssid, password);

  while (WiFi.status() != WL_CONNECTED) {
    delay(500);
    Serial.print(".");
  }

  Serial.println("");
  Serial.println("WiFi connected!");
  Serial.print("IP address: ");
  Serial.println(WiFi.localIP());
}

void loop() {
  // Put your main code here, to run repeatedly:
  digitalWrite(trigPin, LOW);
  delayMicroseconds(2);

  digitalWrite(trigPin, HIGH);
  delayMicroseconds(10);
  digitalWrite(trigPin, LOW);

  duration = pulseIn(echoPin, HIGH, 30000);
  if (duration > 0) {
    distance = (duration * 0.0343) / 2; 
    Serial.print("Distance: ");
    Serial.print(distance);
    Serial.println(" cm");

    if (WiFi.status() == WL_CONNECTED) {
      HTTPClient http;

      String serverUrl = "https://belajar-iot.online/insert.php?nilai_ultra_sonik=" + String(distance);

      http.begin(serverUrl); 
      int httpResponseCode = http.GET();

      // Menangani respon
      if (httpResponseCode > 0) {
        String response = http.getString();
        Serial.print("HTTP Response code: ");
        Serial.println(httpResponseCode); 
        Serial.print("Response from server: ");
        Serial.println(response); 
      } else {
        Serial.print("Error on sending GET request: ");
        Serial.println(httpResponseCode); 
      }

      http.end();
    }
  } else {
    Serial.println("Out of range");
  }
  
  delay(1000); 
}