#include <WiFi.h>
#include <WiFiClient.h>
#include <WebServer.h>
#include <uri/UriBraces.h>

#define WIFI_SSID "Wokwi-GUEST"
#define WIFI_PASSWORD ""
// Defining the WiFi channel speeds up the connection:
#define WIFI_CHANNEL 6
#define BUZZPIN 15                // Pin Buzzer
#define CM_ALERT_SOUND 10         // jarak minimal buzzer berbunyi

const char *ssid = "SensorParkir";
 
// OakOLED oled;

// void displayJarak(int i, int angka) {
//   oled.clearDisplay();
//   for (int z = 0; z <= i; z++) {
//     for (int y = 0; y < 7; y++) {
//       oled.drawPixel(z, y, 1);
//     }
//   }
//   oled.setTextSize(6);
//   oled.setCursor(10, 16);
//   oled.println(String(angka));
//   oled.display();
// }
 
void setup() {
  // oled.begin();
  // oled.setTextSize(6);
  // oled.setTextColor(1);
  // oled.setCursor(10, 16);
 
  // oled.println("OKE");            // test display
  // oled.display();
 
  // Serial.begin(115200);
 
  WiFi.mode(WIFI_STA);
  WiFi.begin(ssid);
  // Tunggu WiFi terhubung
  while (WiFi.status() != WL_CONNECTED) {
    delay(500);
    Serial.print(".");
    tone(BUZZPIN, 4978);
    delay(100);
    noTone(BUZZPIN);
  }
 
  Serial.println();
  Serial.print("Terhubung ke ");
  Serial.println(ssid);
  Serial.print("IP address: ");
  Serial.println(WiFi.localIP());
}
 
void loop() {
 
  WiFiClient client;
  HTTPClient http;
 
  Serial.print("[HTTP] begin...\n");
  if (http.begin(client, "http://192.168.4.1/data")) {  // HTTP
 
    Serial.print("[HTTP] GET...\n");
    int httpCode = http.GET();
    Serial.println(httpCode);
    if (httpCode > 0) {
      Serial.printf("[HTTP] GET... code: %d\n", httpCode);
 
      if (httpCode == HTTP_CODE_OK || httpCode == HTTP_CODE_MOVED_PERMANENTLY) {
        String payload = http.getString();
        Serial.println(payload);
 
        int jarak = payload.toInt();
        int bar = map(jarak, 0, 127, 127, 0);
 
        displayJarak(bar, jarak);
 
        if (jarak <= CM_ALERT_SOUND)            // bunyikan buzzer
          tone(BUZZPIN, 4978);
        else
          noTone(BUZZPIN);
      }
    } else {
      Serial.printf("[HTTP] GET... failed, error: %s\n", http.errorToString(httpCode).c_str());
    }
 
    http.end();
  } else {
    Serial.printf("[HTTP} Unable to connect\n");
  }
 
  delay(100);
}