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

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

const char* serverUrl = "http://httpbin.org/post";

void setup() {
  Serial.begin(115200);
  delay(1000);

  WiFi.mode(WIFI_STA);

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

  unsigned long startAttemptTime = millis();

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

    if (millis() - startAttemptTime > 15000) {
      Serial.println("\n❌ WiFi Connection Failed!");
      return;
    }
  }

  Serial.println("\n✅ WiFi Connected");
  Serial.print("IP Address: ");
  Serial.println(WiFi.localIP());
}

void loop() {
  if (WiFi.status() == WL_CONNECTED) {

    HTTPClient http;

    float temperature = 31.0;
    float humidity = 68.3;

    String jsonPayload = "{";
    jsonPayload += "\"temperature\":" + String(temperature) + ",";
    jsonPayload += "\"humidity\":" + String(humidity);
    jsonPayload += "}";

    http.begin(serverUrl);
    http.addHeader("Content-Type", "application/json");

    Serial.println("\n📤 Sending HTTP POST...");
    Serial.println("Payload: " + jsonPayload);

    int httpResponseCode = http.POST(jsonPayload);

    if (httpResponseCode > 0) {
      Serial.print("✅ HTTP Response Code: ");
      Serial.println(httpResponseCode);

      String response = http.getString();
      Serial.println("📥 Server Response:");
      Serial.println(response);
    } else {
      Serial.print("❌ HTTP POST Failed, Error: ");
      Serial.println(httpResponseCode);
    }

    http.end();

  } else {
    Serial.println("⚠ WiFi Disconnected");
  }

  delay(5000); 
}