#include <ESP8266WiFi.h>
#include <ESP8266HTTPClient.h>
#include <WiFiClient.h>
#include <DHT.h>

#define DHT22_PIN D5  // Pin data DHT22 di ESP8266
#define DHTTYPE DHT22

DHT dht(DHT22_PIN, DHTTYPE);

// 🔹 Ganti dengan nama dan password WiFi Anda
const char* ssid = "Z";
const char* password = "zainal123";

// 🔹 URL API Laravel
const char* SERVER_NAME = "http://192.168.38.96:8000/api/sensor"; //ganti sesuai dengan ip laptop

// 🔹 Interval pengiriman data (5 menit)
const long interval = 300000; // 300.000 ms = 5 menit
unsigned long lastMillis = 0;

void setup() {
  Serial.begin(115200);
  Serial.println("🚀 ESP8266 Mulai...");

  dht.begin();
  Serial.println("✅ DHT22 Siap");

  connectToWiFi();
}

void loop() {
  if (WiFi.status() != WL_CONNECTED) {
    Serial.println("⚠ WiFi Terputus! Mencoba Koneksi Ulang...");
    connectToWiFi();
  }

  unsigned long currentMillis = millis();
  if (currentMillis - lastMillis >= interval) {
    lastMillis = currentMillis;
    upload_temperature();
  }

  delay(1000); // 🔹 Tambahkan delay agar tidak looping terlalu cepat
}

// 🔹 Fungsi Koneksi WiFi (Hanya Cetak IP Sekali)
void connectToWiFi() {
  Serial.print("🔗 Menghubungkan ke WiFi...");
  WiFi.begin(ssid, password);

  unsigned long startAttemptTime = millis();
  while (WiFi.status() != WL_CONNECTED && millis() - startAttemptTime < 10000) { // Timeout 10 detik
    delay(500);
    Serial.print(".");
  }

  if (WiFi.status() == WL_CONNECTED) {
    Serial.println("\n✅ Terhubung ke WiFi! IP: " + WiFi.localIP().toString());
  } else {
    Serial.println("\n❌ Gagal Terhubung ke WiFi! Akan Dicoba Lagi Nanti.");
  }
}

// 🔹 Fungsi Mengirim Data Sensor ke Laravel
void upload_temperature() {
  float suhu, kelembaban;
  int retryCount = 0;
  bool success = false;

  while (retryCount < 3) { // 🔹 Coba baca sensor maksimal 3 kali
    suhu = dht.readTemperature() - 0.2;
    kelembaban = dht.readHumidity() + 3.0;
    
    if (!isnan(suhu) && !isnan(kelembaban)) {
      success = true;
      break;
    }
    
    Serial.println(F("⚠ Gagal membaca dari DHT22! Coba lagi..."));
    delay(1000);
    retryCount++;
  }

  if (!success) {
    Serial.println(F("❌ Gagal membaca dari DHT22 setelah 3 percobaan!"));
    return;
  }

  String jsonPayload = "{\"temperature\":" + String(suhu, 2) + ", \"humidity\":" + String(kelembaban, 2) + "}";
  Serial.println("📤 Mengirim Data: " + jsonPayload);

  WiFiClient client;
  HTTPClient http;
  http.setTimeout(5000); // 🔹 Timeout HTTP request agar lebih stabil

  int httpResponseCode;
  int maxRetries = 3;  // 🔹 Coba maksimal 3 kali jika gagal
  for (int i = 0; i < maxRetries; i++) {
    http.begin(client, SERVER_NAME);
    http.addHeader("Content-Type", "application/json");
  
    httpResponseCode = http.POST(jsonPayload);
    Serial.print("📡 HTTP Response Code: ");
    Serial.println(httpResponseCode);
    
    http.end(); // 🔹 Hindari masalah memori

    if (httpResponseCode > 0) { // 🔹 Jika sukses, keluar dari loop
      Serial.println("✅ Data berhasil dikirim!");
      break;
    }

    Serial.println("❌ Gagal mengirim data! Coba lagi dalam 2 detik...");
    delay(2000);
  }
  http.end();
}