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

// ---------- Relay pins (LOW = ON) ----------
#define RELAY_MOTOR 18
#define RELAY_FAN   19
#define RELAY_LIGHT 23

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

// Polling API
const char* baseUrl =
  "http://sensor.somee.com/api/getcommand.aspx?device=";

void setup() {
  Serial.begin(115200);

  pinMode(RELAY_MOTOR, OUTPUT);
  pinMode(RELAY_FAN, OUTPUT);
  pinMode(RELAY_LIGHT, OUTPUT);

  digitalWrite(RELAY_MOTOR, LOW);
  digitalWrite(RELAY_FAN, LOW);
  digitalWrite(RELAY_LIGHT, LOW);

  WiFi.begin(ssid, password);
  Serial.print("Connecting WiFi");

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

void loop() {
  if (WiFi.status() == WL_CONNECTED) {
    checkDevice("motor", RELAY_MOTOR);
    checkDevice("fan", RELAY_FAN);
    checkDevice("light", RELAY_LIGHT);
  }
  delay(500);
}

void checkDevice(String device, int pin) {
  HTTPClient http;
  String url = String(baseUrl) + device;

  http.begin(url);
  int code = http.GET();

  if (code == 200) {
    String payload = http.getString();
    Serial.println(payload);

    // SIMPLE JSON PARSE
    if (payload.indexOf("\"state\":1") > 0) {
      digitalWrite(pin, HIGH);   // ON
    } else {
      digitalWrite(pin, LOW);  // OFF
    }
  } else {
    Serial.print("HTTP error: ");
    Serial.println(code);
  }
  http.end();
}