#include <WiFi.h>
#include <HTTPClient.h> // MQTT tidak digunakan untuk koneksi ke WAN Thingsboard
#include <WiFiClientSecure.h>
#include <DHTesp.h>

// ================= WIFI =================
#define WIFI_SSID           "Wokwi-GUEST"
#define WIFI_PASSWORD       ""

// ================= THINGSBOARD =================
#define TOKEN "4y8m3uojflk0fdliv9eo"
#define TB_HOST "https://tb.andipensil.com"

// ================= SENSOR =================
const int DHT_PIN = 15;
DHTesp dht;

// ================= HTTPS CLIENT (GLOBAL) =================
WiFiClientSecure secureClient;
HTTPClient http;

// -------------------- CONNECT WIFI --------------------
void setupWifi() {
  Serial.print("Connecting to WiFi");
  WiFi.begin(WIFI_SSID, WIFI_PASSWORD);
  while (WiFi.status() != WL_CONNECTED) {
    delay(500);
    Serial.print(".");
  }
  Serial.println(" OK");
}

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

  // TLS config (WAJIB di Wokwi)
  secureClient.setInsecure();
  secureClient.setTimeout(15000);   // TLS timeout

  dht.setup(DHT_PIN, DHTesp::DHT22);
}

void sendTelemetry(float temp, float hum) {
  String payload = "{";
  payload += "\"temperature\":";
  payload += temp;
  payload += ",\"humidity\":";
  payload += hum;
  payload += "}";

  String url = String(TB_HOST) + "/api/v1/" + TOKEN + "/telemetry";

  http.begin(secureClient, url);
  http.addHeader("Content-Type", "application/json");
  http.setTimeout(15000);           // HTTP timeout

  int code = http.POST(payload);
  Serial.print("HTTP Response code: ");
  Serial.println(code);

  http.end();

  // retry 1x jika -1
  if (code == -1) {
    delay(1000);
    Serial.println("Retrying...");
    http.begin(secureClient, url);
    http.addHeader("Content-Type", "application/json");
    http.setTimeout(15000);
    code = http.POST(payload);
    Serial.print("Retry code: ");
    Serial.println(code);
    http.end();
  }
}

void loop() {
  TempAndHumidity data = dht.getTempAndHumidity();

  float temp = data.temperature;
  float hum  = data.humidity;

  Serial.print("Temp: ");
  Serial.print(temp);
  Serial.print(" °C | Hum: ");
  Serial.println(hum);

  if (WiFi.status() == WL_CONNECTED) {
    sendTelemetry(temp, hum);
  }

  delay(5000);  // ⬅️ JANGAN terlalu cepat di Wokwi
}