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

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

const String url = "https://raw.githubusercontent.com/erichuang2013/erichuang2013.github.io/master/b.txt";

#define led_pin 13

void setup() {
  Serial.begin(115200);
  WiFi.begin(ssid, password);
  pinMode(led_pin, OUTPUT);

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

  Serial.print("OK! IP=");
  Serial.println(WiFi.localIP());
  // digitalWrite(led_pin, HIGH);

  Serial.print("Fetching " + url + "... ");

  // HTTPClient http;
 //  http.begin(url);

  // int httpResponseCode = http.GET();
  // if (httpResponseCode > 0) {
  //   Serial.print("HTTP ");
  //   Serial.println(httpResponseCode);
  //   String payload = http.getString();
  //   Serial.println();
  //   Serial.println(payload);
  // }
  // else {
  //   Serial.print("Error code: ");
  //   Serial.println(httpResponseCode);
  //   Serial.println(":-(");
  // }
}

void loop() {
  HTTPClient http;
  http.begin(url);

  int httpResponseCode = http.GET();
  if (httpResponseCode > 0) {
    Serial.print("HTTP ");
    Serial.println(httpResponseCode);
    String payload = http.getString();
    Serial.println();
    Serial.println(payload);
    if (payload.toInt() == 0) {
      digitalWrite(led_pin, HIGH);
    } else {digitalWrite(led_pin, LOW);}
  }
  else {
    Serial.print("Error code: ");
    Serial.println(httpResponseCode);
    Serial.println(":-(");
  }
  delay(5000);
}